Abstract

A three-dimensional structure sensing system includes an image sensor that receives a reflected light from an object irradiated by an emitted light, the reflected light being converted into image data representing an image of the object; and a depth processing unit that generates depth data according to the image data. It is determined whether the depth data is affected by a reflective surface according to the image data and the depth data.

IPC Classes  ?

• G01S 7/48 - Details of systems according to groups , , of systems according to group
• G01S 17/04 - Systems determining the presence of a target
• G01S 17/10 - Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
• G01S 17/87 - Combinations of systems using electromagnetic waves other than radio waves
• H04N 13/254 - Image signal generators using stereoscopic image cameras in combination with electromagnetic radiation sources for illuminating objects
• H04N 23/72 - Combination of two or more compensation controls
• H04N 23/73 - Circuitry for compensating brightness variation in the scene by influencing the exposure time
• H04N 23/74 - Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means

Abstract

A 3D location reporting method includes capturing a plurality of 2D image frames having a sensor frame rate and a plurality of 3D depth image frames having the sensor frame rate, wherein the plurality of 2D image frames and the plurality of 3D depth image frames are interleaved, and a first 2D image frame of the plurality of 2D image frames is captured earlier than a first 3D depth image frame of the plurality of 3D depth image frames; calculating a first 3D location according to an N-th 2D image frame of the plurality of 2D image frames and an N-th 3D depth image frame of the plurality of 3D depth image frames; and calculating a second 3D location according to the N-th 3D depth image frame and an (N+1)-th 2D image frame of the plurality of 2D image frames.

IPC Classes  ?

• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods

Abstract

A current sensing calibration method includes setting a first calibration current, inputting the first calibration current to a current sensing circuit for detecting a first real digital code, acquiring offset calibration data according to the first real digital code and a first ideal digital code corresponding to the first calibration current, setting a second calibration current and a third calibration current, inputting the second calibration current to the current sensing circuit for detecting a second real digital code, inputting the third calibration current to the current sensing circuit for detecting a third real digital code, acquiring gain calibration data according to the second real digital code, the third real digital code, a second ideal digital code, and a third ideal digital code, and acquiring channel temperature calibration data after the current sensing circuit is calibrated according to the offset calibration data and the gain calibration data.

IPC Classes  ?

• G01R 35/00 - Testing or calibrating of apparatus covered by the other groups of this subclass
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

Abstract

An anti-spoofing authentication system includes an image capture device that converts received light into a voice signal representing a captured image; a microphone that converts sound wave into a voice signal; a face detection device that detects a human face on the captured image, the face detection device including a lip detection device that detects lip features associated with the detected human face; a voice activity detection (VAD) device that detects presence of human voice in the voice signal; and an anti-spoofing device that detects a spoofing attack according to the detected lip features and the detected human voice.

IPC Classes  ?

• G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
• G06V 40/40 - Spoof detection, e.g. liveness detection
• G10L 15/08 - Speech classification or search
• G10L 17/24 - the user being prompted to utter a password or a predefined phrase

Abstract

The disclosure provides a compensating circuit for overdriving a data signal of display device. The compensating circuit includes a memory circuit, an offsetting circuit and an overdriving value generator. The memory circuit stores a first offset gray value of a first frame period. The offsetting circuit receives the first offset gray value, a duty value of an emission driving signal and a current gray value of the data signal. The offsetting circuit generates a second offset gray value of a second frame period according to the duty value, the current gray value and the first offset gray value, and stores the second offset gray value into the memory circuit. The overdriving value generator generates an overdriving value for overdriving the data signal to generate a compensated data signal according to the second offset gray value and the current gray value.

IPC Classes  ?

• G09G 3/02 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen
• G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
• G09G 3/3208 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]

Abstract

A duty cycle correction device includes: a phase-locked Loop (PLL)-based duty cycle correction circuit, a bypass duty cycle correction circuit and a multiplexer. The PLL-based duty cycle correction circuit is configured to receive and correct an input clock signal to generate a PLL-based corrected signal. The bypass duty cycle correction circuit is configured to be clocked by the input clock signal to sample a logic signal at its input terminal to generate a bypass corrected signal. The multiplexer is coupled to the PLL-based duty cycle correction circuit and the bypass duty cycle correction circuit and is configured to select one of the PLL-based corrected signal, the bypass corrected signal and the input clock signal as an output clock signal.

IPC Classes  ?

• H03K 3/017 - Adjustment of width or dutycycle of pulses
• H03K 5/135 - Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals by the use of time reference signals, e.g. clock signals
• H03K 5/156 - Arrangements in which a continuous pulse train is transformed into a train having a desired pattern
• H03L 7/099 - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop

Abstract

A sound source localization system includes a microphone array composed of a plurality of microphones each converting sound wave into a corresponding voice signal; a room shape estimator that determines a room shape including a location map and a corresponding template voice feature map composed of template voice features associated with a virtual sound source disposed at different locations respectively, and outputs a room reliability indicating confidence about the determined room shape; a lookup table (LUT) that pre-stores the location map and the corresponding template voice feature map; and a localizer that determines a location of a sound source according to the room reliability and similarity between a voice feature associated with the sound source and the template voice features of the template voice feature map.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• G10L 15/02 - Feature extraction for speech recognitionSelection of recognition unit
• H04N 5/262 - Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 29/00 - Monitoring arrangementsTesting arrangements

Abstract

An audio capture method includes: determining one or more regions of interest (ROIs) pertaining to an image sequence or a video stream; determining position information of the one or more ROIs; converting the position information of the one or more ROIs into direction information of the one or more ROIs; and performing a beamforming processing on a plurality of microphone signals to generate an audio capture signal based on direction information of the one or more ROIs and direction information of one or more sound sources that are captured in the plurality of microphone signals.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G06V 20/40 - ScenesScene-specific elements in video content
• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
• H04R 3/00 - Circuits for transducers

Abstract

An inverter-based comparator includes an output stage circuit including a P-type output transistor and an N-type output transistor; a first inverter having a first transition voltage with an input node coupled to an input voltage and an output node generating a first inverted voltage and coupled to a gate of the N-type output transistor; and a second inverter having a second transition voltage with an input node coupled to the input voltage and an output node generating a second inverted voltage and coupled to a gate of the P-type output transistor. The first inverter and the second inverter each includes an inverter that includes a first inverter branch composed of at least one first P-type transistor and at least one first N-type transistor; and a second inverter branch composed of at least one second P-type transistor, at least one second N-type transistor and at least two tuning switches.

IPC Classes  ?

• H03K 5/24 - Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude

Abstract

A driver adaptable to a debugging system includes a driver controller, and a driver general-purpose input and output (GPIO) controlled by the driver controller. The driver GPIO directly transfers a debug log of status messages of a touchscreen to a host general-purpose input and output (GPIO) of a host without handshaking between the driver and the host.

IPC Classes  ?

• G06F 13/20 - Handling requests for interconnection or transfer for access to input/output bus

Abstract

A touch control circuit for use in a display device includes: a plurality of analog-to-digital converters and a controller. Each of the analog-to-digital converters is coupled to at least one of a plurality of touch sensing electrodes and at least one of a plurality of source drivers of the display device. At least one of the analog-to-digital converters is configured to generate a first measured digital code according to an output voltage outputted by at the least one of the source drivers. The controller is coupled to the analog-to-digital converters, and configured to compare the first measured digital code with an input digital code that the output voltage of the at the least one of the source drivers corresponds to, thereby to generate a first safety detection result regarding the at least one of the source drivers.

IPC Classes  ?

• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
• H03M 1/12 - Analogue/digital converters

Abstract

A clock data recovery circuit is provided. The clock data recovery circuit includes a charge pump circuit, a voltage controlled delay line circuit, a charge pump current generator, a phase-frequency detector and a frequency detector. The charge pump circuit generates a control voltage according to a first control signal, a second control signal and a charge pump current. The voltage controlled delay line circuit generates a data clock signal according to the control voltage and a reference clock signal. The charge pump current generator generates the charge pump current to the charge pump circuit according to the control voltage. The phase-frequency detector generates the first control signal according to a feedback clock signal and the reference clock signal. The frequency detector generates the second control signal according to the feedback clock signal and the reference clock signal.

IPC Classes  ?

• H03L 7/08 - Details of the phase-locked loop
• H03L 7/081 - Details of the phase-locked loop provided with an additional controlled phase shifter
• H03L 7/089 - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses

Abstract

A timing controller for controlling a plurality of driving circuits of a light-emitting diode (LED) display device is provided. The timing controller comprises: a voltage level conversion circuit and a setting circuit. The voltage level conversion circuit is configured to determine a plurality of voltage level settings with respect to a plurality of image regions of an input image. The setting circuit is configured to respectively set the plurality of driving circuits of the LED display device according to the plurality of voltage level settings, wherein the third circuitry is configured to set each of the plurality of driving circuits to utilize a drive voltage at a specific level that is indicated by a corresponding one of the voltage level settings, to respectively drive LED units of the LED display device.

IPC Classes  ?

• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
• G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]

Abstract

A touch detection system includes a stylus, a panel and a processing circuit. The panel can include a plurality of sensing cells used to receive a first signal and a second signal generated by a touch event. The processing circuit can be coupled to the panel and used to determine a plurality of first areas and a plurality of first intensities corresponding to the first signal, determine a plurality of second areas and a plurality of second intensities corresponding to a second signal, and determine whether the touch event is triggered by the stylus touching the panel according to the first intensities, first areas, the second intensities and the second areas.

IPC Classes  ?

• G06F 3/03 - Arrangements for converting the position or the displacement of a member into a coded form
• G06F 3/0354 - Pointing devices displaced or positioned by the userAccessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

A driving circuit is provided, including first to second output stage circuits that output, respectively, first and second voltages of a first polarity. The driving circuit further includes a first switch having a first terminal receiving the first voltage from the first output stage circuit and a second terminal coupled to a first output channel through a switching circuit, and a second switch having a first terminal receiving the second voltage from the second output stage circuit and a second terminal coupled to a second output channel through the switching circuit. The driving circuit further includes a first charge sharing circuit having a first terminal coupled to the first output channel and a second terminal coupled to the second output channel. The first charge sharing circuit is turned on to provide charge sharing between the first output channel and the second output channel.

IPC Classes  ?

• H03K 3/012 - Modifications of generator to improve response time or to decrease power consumption
• H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

Abstract

The image detecting apparatus including an image capturing device, a microphone array and a processing circuit is provided. The image capturing device captures an image. The microphone array detects a voice source. The processing circuit performs a voice activity detection on a first number of voice signals captured by the microphone devices to determine whether the voice source is a preset type voice. The processing circuit performs a beamforming operation on a second number of voice signals captured by the microphone devices to generate a region of interest (ROI) setting signal when the voice source is the preset type voice. The ROI setting signal indicates a location of the voice source in the image. The processing circuit performs an image detecting operation on a ROI image. The ROI image is determined according to the image and the ROI setting signal. The first number is smaller than the second number.

IPC Classes  ?

• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
• G10L 25/78 - Detection of presence or absence of voice signals
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 3/00 - Circuits for transducers

Abstract

The invention provides an auto calibration circuit, a variable gain amplifier and an auto calibration method for calibrating output voltages of the variable gain amplifier, including: a resistor circuit, a reference signal generating circuit and a comparator circuit. The resistor circuit is configured to receive differential voltages from the variable gain amplifier and to convert the differential voltages to a common mode voltage; the reference signal generating circuit includes a calibration resistor for outputting a reference voltage; the comparator circuit is electrically connected to the reference signal generating circuit and the variable gain amplifier, and is configured to receive one of the differential voltages from the variable gain amplifier and to compare the one of the differential voltages with the reference voltage to output a resistance control signal for controlling a variable resistor circuit of the variable gain amplifier.

IPC Classes  ?

• H03F 1/30 - Modifications of amplifiers to reduce influence of variations of temperature or supply voltage
• H03F 3/45 - Differential amplifiers
• H03G 3/30 - Automatic control in amplifiers having semiconductor devices

Abstract

A fingerprint recognition driving device includes a plurality of light sensors and a plurality of signal processing circuits. The light sensors respectively generate a plurality of sensing signals. The signal processing circuits respectively coupled to the light sensors, for processing the sensing signals to generate a plurality of processed sensing signals. During each of a plurality of sensing periods, one of the signal processing circuits provides corresponding processed sensing signal with a first polarity, and each of the other signal processing circuits provides corresponding processed sensing signals with a second polarity, and the first polarity is different from the second polarity. The signal processing circuits generates an output signal according to the processed sensing signals.

IPC Classes  ?

• G06V 40/13 - Sensors therefor

Abstract

An electronic device, a monitoring system and a monitoring method are provided. The electronic device includes a sensor and a processor. The sensor is configured to sense a sensing object and output a sensing data. The processor is coupled to the sensor, and configured to receive the sensing data. The processor generates a plurality of superimposed data according to the sensing data and a plurality of noise data. The processor analyzes the sensing data and the plurality of superimposed data to generate a plurality of recognition results and a plurality of confidence levels. The processor outputs one of the plurality of recognition results to a cloud device, and further determine whether to output the sensing data to the cloud device according to the plurality of recognition results or the plurality of confidence levels.

IPC Classes  ?

• H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

A depth completion method of sparse depth map includes: acquiring a grayscale image and a sparse depth map corresponding to the grayscale image; obtaining a nearest neighbor interpolation (NNI) image and a Euclidean distance transform (EDT) image based on the sparse depth map; inputting the grayscale image, the NNI image, and the EDT image into a neural network model, thereby outputting a predicted residual map; and generating a predicted dense depth map according to the predicted residual map and the NNI image.

IPC Classes  ?

• G06T 7/55 - Depth or shape recovery from multiple images
• G06T 3/40 - Scaling of whole images or parts thereof, e.g. expanding or contracting
• G06T 7/521 - Depth or shape recovery from laser ranging, e.g. using interferometryDepth or shape recovery from the projection of structured light

Abstract

A digital low color shift (DLCS) edge smoothing method, for a display panel having a plurality of pixels, includes determining an edge gain of a first pixel of the plurality of pixels of the display panel; and smoothing the edge of the first pixel and the other neighbor pixels of the plurality of pixels of the display panel according to a spatial filter.

IPC Classes  ?

• G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

The control circuit for controlling an image sensor of the disclosure includes a processor, a command circuit, a power management circuit and an image controller. The image sensor captures at least one image and generates at least one image data corresponding the at least one image in response to the controlling command. The power management circuit generates a driving power in response to a timing interrupt signal when the processor is in a low power mode. The command circuit is driven by the driving power when the processor is in the low power mode. The image controller is driven by the driving power to controls the command circuit to generate the controlling command when the processor is in the low power mode. The image controller controls the power management circuit to stop generating the driving power according to a data number of the at least one image data.

IPC Classes  ?

• H04N 5/335 - Transforming light or analogous information into electric information using solid-state image sensors [SSIS]
• G06F 9/30 - Arrangements for executing machine instructions, e.g. instruction decode
• G06F 9/48 - Program initiatingProgram switching, e.g. by interrupt
• H04N 23/65 - Control of camera operation in relation to power supply

Abstract

An acoustic feature extraction (AFE) circuit includes a plurality of band-pass filters (BPFs) adaptable to a plurality of channels with different band-pass frequency ranges respectively for switchably receiving an amplified signal, thereby generating corresponding filtered signals, the plurality of BPFs including an operational amplifier that is shared among the plurality of channels; and a rectifier switchably coupled to receive the filtered signals, thereby generating a rectified signal. The amplified signal is time-division demultiplexed onto the BPFs in different phases, and the filtered signals are time-division multiplexed onto the rectifier in different phases.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers
• G10L 15/02 - Feature extraction for speech recognitionSelection of recognition unit
• G10L 25/84 - Detection of presence or absence of voice signals for discriminating voice from noise

Abstract

The invention provides a power system for monitoring a working environment of a monitored circuit and adjusting a working voltage of the monitored circuit includes: a power circuit, a voltage-controlled oscillator and a counter. The power circuit is configured to output the working voltage to the monitored circuit through a power supply path. The voltage-controlled oscillator is disposed in or around the monitored circuit and is electrically connected to the power supply path and a ground path to which the monitored circuit is electrically connected, and is configured to output an oscillation frequency in accordance with a signal variation on the power supply path and the ground path. The counter is electrically connected to the voltage-controlled oscillator and is configured to generate a counting number signal in accordance with the oscillation frequency and a synchronizing signal, thereby adjusting the working voltage outputted to the monitored circuit.

IPC Classes  ?

• H03L 7/099 - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
• H03L 7/10 - Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
• H03L 7/24 - Automatic control of frequency or phaseSynchronisation using a reference signal directly applied to the generator

Abstract

A static random-access memory (SRAM) cell includes a first inverter and a second inverter being cross-coupled; a first access transistor that accesses an output of the first inverter under control of a word line; a second access transistor that accesses an output of the second inverter under control of the word line; a first passage transistor that passes a common-mode voltage, controlled by the output of the first inverter; a second passage transistor that passes an input signal, controlled by the output of the second inverter; and a capacitor switchably coupled to receive the common-mode voltage and the input signal through the first passage transistor and the second passage transistor respectively.

IPC Classes  ?

• G11C 11/4099 - Dummy cell treatmentReference voltage generators
• G06N 3/063 - Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using electronic means
• G11C 5/06 - Arrangements for interconnecting storage elements electrically, e.g. by wiring
• G11C 7/16 - Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
• G11C 11/4074 - Power supply or voltage generation circuits, e.g. bias voltage generators, substrate voltage generators, back-up power, power control circuits
• G11C 11/4076 - Timing circuits
• G11C 11/408 - Address circuits
• G11C 11/4094 - Bit-line management or control circuits
• G11C 11/54 - Digital stores characterised by the use of particular electric or magnetic storage elementsStorage elements therefor using elements simulating biological cells, e.g. neuron

Abstract

A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Abstract

A touch detection circuitry includes an analog-to-digital converter (ADC), a controller, and a packet generator. The ADC is arranged to convert touch signals of a touch panel from analog form into digital form. The controller is electrically connected to the ADC, and is configured to calculate at least one coordinate point, at least one touch event type, and at least one touch size respectively corresponding to at least one touch event on the touch panel based on the touch signals. The packet generator is electrically connected to the controller, and is configured to encapsulate the at least one coordinate point, the at least one touch event type, and the at least one touch size into a touch data packet.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• H03M 1/12 - Analogue/digital converters

Abstract

A time-of-flight (ToF) three-dimensional (3D) sensing system includes a projector that generates an emitted light corresponding to an emitted signal; a sensor that generates a received signal according to a reflected light; and a decoder that determines a distance between the sensor and the object according to the received signal. The emitted signal associated with the emitted light is generated in a basis period, and the received signal associated with the reflected light is generated by the sensor with a first phase shift with respect to a beginning of the basis period. No emitted light is generated in a supplemental period following the basis period, and the received signal has a second phase shift with respect to a beginning of the supplemental period. The distance between the sensor and the object is determined according to the first phase shift and the second phase shift.

IPC Classes  ?

• G01S 17/894 - 3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
• G01S 7/481 - Constructional features, e.g. arrangements of optical elements
• G01S 7/4915 - Time delay measurement, e.g. operational details for pixel componentsPhase measurement

Abstract

A backlight control device for use in an electronic device includes a motion detecting unit, a sound matching unit and a controller. The motion detecting unit is configured to detect motion of a lid section of the electronic device to generate motion data. The sound matching unit is configured to match a soundprint derived from a sound sample that is captured by a sound capture unit, to one or more sound patterns stored within in a sound pattern database to generate a lid state indication signal if the motion data indicates the motion of the lid section corresponds to a predetermined state. The controller is configured to control a backlight module of a display device of the electronic device according to the lid state indication signal.

IPC Classes  ?

• G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
• G06F 3/16 - Sound inputSound output

Abstract

A depth sensing system and a depth sensing method are provided. The sensing system includes depth sensing module and a processor for performing the sensing method. The depth sensing method incudes: obtaining a sensed target data set via a depth sensing module; calculating a period number corresponding to a measuring pixel; and calculating an actual range value or an actual depth of the measuring pixel in accordance with a period number and a range value of the measuring pixel. The step of calculating the period number of the target data set includes: calculating a spatial ratio in accordance with the position values of the pixel of optical center and measuring pixel, and a focal length of the depth sensing module; calculating a basic range in accordance with the spatial ratio and an unit depth; and calculating the period number corresponding to the measuring pixel.

IPC Classes  ?

• G06T 7/50 - Depth or shape recovery
• H04N 25/705 - Pixels for depth measurement, e.g. RGBZ

Abstract

An inverter-based comparator, powered between a first supply voltage and a second supply voltage being lower than the first supply voltage, includes a first inverter branch composed of at least one first P-type transistor and at least one first N-type transistor; and a second inverter branch composed of at least one second P-type transistor, at least one second N-type transistor and at least two tuning switches. The first inverter branch and the second inverter branch are configured to compare an input voltage with an internal trigger point, thereby generating a compare voltage at an interconnected node. One of the at least two tuning switches is controlled to isolate the first supply voltage and another is controlled to isolate the second supply voltage to compensate for trigger point shifting.

IPC Classes  ?

• H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
• H02M 1/00 - Details of apparatus for conversion
• H03K 5/24 - Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude

Abstract

An optical distortion correction system includes a correction device that generates correction values according to data from a lens; a weighting device that generates weights for corresponding data according to the correction values; a jag detector that detects a jag in an outline according to the data; a filter that provides a spatial filter when a jag is detected; and a smoothing device that smooths the data by the weights and the spatial filter, thereby resulting in smoothed data.

IPC Classes  ?

• G06T 5/00 - Image enhancement or restoration

Abstract

A wide-angle optical lens system includes a negative-powered first lens group, a positive-powered second lens group and a positive-powered third lens group arranged in an order from an object side to an image side.

IPC Classes  ?

• G02B 13/06 - Panoramic objectivesSo-called "sky lenses"
• G02B 9/60 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having five components only
• G02B 13/00 - Optical objectives specially designed for the purposes specified below

Abstract

A three-dimensional (3D) scanning system includes a projector that generates an emitted light projected on an object, a reflected light being reflected from the object; a sensor that generates image data according to the reflected light; and a depth processor that generates depth data according to the image data and at least one modified factor representing corresponding deviation amount between the image data and an ideal image data due to a circle of confusion caused by the reflected light passing a lens of the sensor and then irradiating a sense plane of the sensor out of focus.

IPC Classes  ?

• G01S 17/894 - 3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
• G01S 7/481 - Constructional features, e.g. arrangements of optical elements
• G06T 7/521 - Depth or shape recovery from laser ranging, e.g. using interferometryDepth or shape recovery from the projection of structured light

Abstract

A touch data transmission method of present disclosure includes: generating a header information by a first controller according to a detected touch event; generating a first checksum information by the first controller according to the header information; storing the header information and the first checksum information to a memory by the first controller; and, storing a plurality of position information of the detected touch event to the memory by the first controller.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• H03M 13/09 - Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit

Abstract

The cholesteric liquid crystal display (CLCD) device includes first and second cholesteric liquid crystal panels that reflect light within different wavelength ranges. Both panels have gate lines that extend from one side to the other. A gate driver is electrically connected to the first panel's gate lines. Additionally, a flexible printed circuit is electrically connected to both the first and second panels' gate lines.

IPC Classes  ?

• G02F 1/137 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
• G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
• G02F 1/1345 - Conductors connecting electrodes to cell terminals
• G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals

Abstract

A method for performing light shaping with aid of an adaptive projector and associated apparatus are provided. The method includes: utilizing an image processing circuit to obtain distance information; utilizing the image processing circuit to determine a distance range according to the distance information; utilizing the image processing circuit to perform projection light-shaping type selection to determine at least one selected projection light-shaping type corresponding to the distance range among multiple predetermined projection light-shaping types; utilizing the adaptive projector to perform projection of the at least one selected projection light-shaping type to perform spatial exposure bracketing, for capturing at least one corresponding image with a camera, to allow the image processing circuit to perform at least one detection operation according to the at least one corresponding image to generate at least one detection result, for performing subsequent processing of the hybrid depth detection device.

IPC Classes  ?

• G06T 7/521 - Depth or shape recovery from laser ranging, e.g. using interferometryDepth or shape recovery from the projection of structured light
• H04N 23/611 - Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
• H04N 23/67 - Focus control based on electronic image sensor signals
• G06T 7/50 - Depth or shape recovery

Abstract

A touch sensing apparatus includes a panel with touch detection function and a touch detection circuitry. The touch detection circuitry is coupled to the panel, and is configured to detect a touch operation on the panel, record an error event of the touch sensing apparatus, and write the error event into an external storage medium via a data transmission interface thereof.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

A resetting system includes a driver that controls a touchscreen, the driver including a driver communication interface that defines a bus for transferring a transfer signal; and an on-screen display (OSD) device that generates an OSD signal representing a predetermined reset image in response to a predetermined event, the OSD signal superimposing over pixels and graphics data to be rendered on the touchscreen; and a host that transfers the transfer signal to or from the driver, the host including a host communication interface that defines the bus for transferring the transfer signal to or from the driver.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
• G06F 3/14 - Digital output to display device
• G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
• G09G 5/14 - Display of multiple viewports

Abstract

A static random-access memory (SRAM) cell includes a first inverter and a second inverter being cross-coupled; a first access transistor that accesses an output of the first inverter under control of a word line; a second access transistor that accesses an output of the second inverter under control of the word line; a first passage transistor that passes a common-mode voltage, controlled by the output of the first inverter; a second passage transistor that passes an input signal, controlled by the output of the second inverter; and a capacitor switchably coupled to receive the common-mode voltage and the input signal through the first passage transistor and the second passage transistor respectively.

IPC Classes  ?

• G11C 11/4099 - Dummy cell treatmentReference voltage generators
• G06N 3/063 - Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using electronic means
• G11C 5/06 - Arrangements for interconnecting storage elements electrically, e.g. by wiring
• G11C 7/16 - Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
• G11C 11/4074 - Power supply or voltage generation circuits, e.g. bias voltage generators, substrate voltage generators, back-up power, power control circuits
• G11C 11/4076 - Timing circuits
• G11C 11/408 - Address circuits
• G11C 11/4094 - Bit-line management or control circuits
• G11C 11/54 - Digital stores characterised by the use of particular electric or magnetic storage elementsStorage elements therefor using elements simulating biological cells, e.g. neuron

Abstract

A structured-light three-dimensional (3D) scanning system includes a projector that emits a projected light with a predetermined pattern onto an object; an image capture device that generates a captured image according to a reflected light reflected from the object, the predetermined pattern of the projected light being distorted due to 3D shape of the object, thereby resulting in a distorted pattern; a depth decoder that converts the distorted pattern into a depth map representing the 3D shape of the object; and a depth fusion device that generates a fused depth map according to at least two different depth maps associated with the object.

IPC Classes  ?

• G06T 7/521 - Depth or shape recovery from laser ranging, e.g. using interferometryDepth or shape recovery from the projection of structured light
• G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
• G06T 5/00 - Image enhancement or restoration
• G06T 9/00 - Image coding
• G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings
• G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces
• G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level

Abstract

The control circuit for controlling a display panel is provided. The control circuit includes a first driving circuit and a second driving circuit for driving the display panel. The first driving circuit includes first output terminals and first input terminals. The first driving circuit outputs a plurality of test signals to the first output terminals sequentially during different periods in a diagnosis stage. The second driving circuit includes second input terminals and second output terminals. The second driving circuit receives the test signals through the second input terminals in the diagnosis stage, and outputs a plurality of response signals to the second output terminals sequentially during different periods in response to the test signals. The first driving circuit receives the response signals through the first input terminals, and judges a connecting status of the first driving circuit and the second driving circuit according to the response signals.

IPC Classes  ?

• G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

A touch detection circuitry includes an analog-to-digital converter (ADC), a controller, and a packet generator. The ADC is arranged to convert touch signals of a touch panel from analog form into digital form. The controller is electrically connected to the ADC, and is configured to calculate at least one coordinate point and at least one touch size respectively corresponding to at least one touch event on the touch panel based on the touch signals. The packet generator is electrically connected to the controller, and is configured to encapsulate the at least one coordinate point and the at least one touch size into a touch data packet.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• H03M 1/12 - Analogue/digital converters

Abstract

An optical element and a method for manufacturing the optical element are described. The optical element includes a transparent substrate, an optical layer, and an adhesive layer. The optical layer is located on a surface of the transparent substrate. The optical layer has a first surface and a second surface, which are opposite to each other. The first surface is set with various diffracting optical structures. A refractive index of the optical layer is equal to or greater than 1.4. The adhesive layer is sandwiched between the surface of the transparent substrate and the second surface of the optical layer.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• B32B 7/023 - Optical properties
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin

Abstract

An apparatus for performing subpixel rendering of an RGBW display panel is provided. The apparatus receives an input gray level data to acquire a luminance value of each subpixel of a RGB pixel set including two RGB pixels adjacent to each other. The apparatus calculates a rendered luminance value of each subpixel of a display pixel set including two display pixels adjacent to each other according to the luminance values. The display pixel set of the RGBW display panel includes red, green, blue, and white subpixels. The rendered luminance value of the white subpixel of one of the display pixels is determined according to the saturation value of the corresponding RGB pixel and the luminance value of each subpixel of the corresponding RGB pixel. The apparatus acquires a gray level value of each white subpixel of the display pixel set according to the rendered luminance values.

IPC Classes  ?

• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
• G09G 5/06 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables

Abstract

The device includes a projecting device, an image sensor and a computing circuit. The projecting device provides a light beam having a predetermined pattern that is projected onto an object. The image sensor receives the light beam reflected from the object to generate an image. The computing circuit compares the image with a first ground-truth image and a ground-truth image to generate a first depth value and a second depth value respectively. The first and second depth values are combined to generate a depth result.

IPC Classes  ?

• G01B 11/22 - Measuring arrangements characterised by the use of optical techniques for measuring depth

Abstract

A display apparatus includes a backlight module with backlight zones, a panel over the backlight module, and a circuit configured to generate compensated pixel data for the panel based on image data and an arrangement of the zones of the backlight module, in which the image data has image areas respectively corresponding to the backlight zones. For a first image area being a low-luminance image area and a luminance intensity of a first zone of the zones corresponding to the first image area being less than a luminance intensity of a second zone corresponding to a second image area neighboring the first image area, the circuit performs first pixel compensation for high-luminance pixels in the second image area and second pixel compensation on low-luminance pixels in the second image area, in which the second pixel compensation is greater than the first pixel compensation.

IPC Classes  ?

• G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
• G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
• G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed

Abstract

A clock generator includes a resistor-capacitor-based voltage-controlled oscillator (RC-based VCO) that generates an output signal with oscillation frequency controlled by an input voltage at an input node; and a temperature compensator that generates the input voltage to compensate change of the oscillation frequency associated with a change in temperature.

IPC Classes  ?

• H03K 3/0231 - Astable circuits
• H03K 3/011 - Modifications of generator to compensate for variations in physical values, e.g. voltage, temperature
• H03K 5/134 - Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals using a chain of active-delay devices with field-effect transistors

Abstract

An image projector includes a light source capable of switchable emitting different patterns of light; and a beam shaper that shapes a light beam emitted by the light source, thereby generating a shaped pattern of light to be projected onto an object in a scene.

IPC Classes  ?

• G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
• H01S 5/042 - Electrical excitation
• H01S 5/42 - Arrays of surface emitting lasers

Abstract

The fingerprint sensing circuit includes a photo detector, a capacitor, a current mirror and a switch circuit. The capacitor has a first terminal electrically connected to the first terminal of the photo detector. The current mirror has an input terminal electrically connected to the first terminal of the photo detector and an output terminal electrically connected to a sensing line. In an exposure period, the switch circuit turns off the current mirror. In a sensing period, the switch circuit turns on the current mirror to generate a current on the sensing line, and the detecting circuit is configured to generate a fingerprint signal according to the current.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06V 40/13 - Sensors therefor

Abstract

A depth sensing apparatus includes an image sensor, a depth decoder and a depth fusion processor. The mage sensor captures raw images from a scene with different exposure configurations. The depth decoder decodes each raw image into depth values, each raw image having pixels respectively corresponding to the depth values. The depth fusion processor sets one of the raw images and the rest of at least one raw image as a base image and at least one reference image, respectively, and substitutes invalid depth values of the depth values corresponding to the base image with valid depth values corresponding to the at least one reference image to generate a depth map of the scene. The invalid depth values corresponding to the base image and the valid depth values corresponding to the at least one reference image map to the same pixels of the raw images.

IPC Classes  ?

• G06T 7/55 - Depth or shape recovery from multiple images
• H04N 5/235 - Circuitry for compensating for variation in the brightness of the object

Abstract

A voltage controller of a display system includes a gate high voltage detector for detecting a gate high voltage, and a gate low voltage detector for detecting a gate low voltage. The gate high voltage and the gate low voltage are supplied to a gate driver, and the gate high voltage is greater than the gate low voltage.

IPC Classes  ?

• G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode

Abstract

A gate driving device and an operating method are provided. The gate driving device includes a plurality of gate driving circuits and a control circuit. The gate driving circuits generate a plurality of gate driving signals having different timing. The control circuit is coupled to a plurality of candidate gate driving circuits among the gate driving circuits. The control circuit selects one of the candidate gate driving circuits as an initial stage gate driving circuit per one scanning cycle. A series connection mode between the gate driving circuits is changed in response to a scan selection signal.

IPC Classes  ?

• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

A display device includes a display panel and a circuit. For a first sub-pixel, the circuit obtains a corresponding second sub-pixel. The circuit calculates a first compensation value according to the grays levels of the first sub-pixel and the second sub-pixel, and calculates a second compensation value according to the polarity states of the first sub-pixel and the second sub-pixel and the difference between the gray levels of the two sub-pixels. The circuit also calculates a gain according to the position of the first sub-pixel, compensates the gray level to the first sub-pixel according to the first compensation value, the second compensation value and the gain to obtain an output gray level, and drives the first sub-pixel according to the output gray level.

IPC Classes  ?

• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

An optical element and a method for manufacturing the optical element are described. The optical element includes a light penetrating substrate, an optical layer, and an adhesive layer. The optical layer is located on a surface of the light penetrating substrate. The optical layer has a first surface and a second surface, which are opposite to each other. The first surface is set with various diffracting optical structures. A refractive index of the optical layer is ranging from substantially 1 to substantially 4. The adhesive layer is sandwiched between the surface of the light penetrating substrate and the second surface of the optical layer.

IPC Classes  ?

• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
• G02B 1/12 - Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation

Abstract

An optical element and a method for manufacturing the optical element are described. The optical element includes a transparent substrate, an optical layer, and an adhesive layer. The optical layer is located on a surface of the transparent substrate. The optical layer has a first surface and a second surface, which are opposite to each other. The first surface is set with various diffracting optical structures. A refractive index of the optical layer is equal to or greater than 1.4. The adhesive layer is sandwiched between the surface of the transparent substrate and the second surface of the optical layer.

IPC Classes  ?

• G02B 6/136 - Integrated optical circuits characterised by the manufacturing method by etching
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• B32B 7/023 - Optical properties
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin

Abstract

A 3D sensing system including a liquid crystal lens, a projector, an image sensor and a circuit. The projector provides a light beam to the liquid crystal lens which applies a pattern to the light beam to generate a structured light. The image sensor captures an image corresponding to the structured light. The circuit calculates first depth information according to the pattern and the image, and determines if the image satisfies a quality requirement. If the image does not satisfy the quality requirement, the pattern is modified and another image is captured for calculating second depth information. The first and second depth information are combined to generate a depth map.

IPC Classes  ?

• G06T 7/521 - Depth or shape recovery from laser ranging, e.g. using interferometryDepth or shape recovery from the projection of structured light
• G02F 1/29 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the position or the direction of light beams, i.e. deflection
• G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object

Abstract

A detection circuit adaptable to a fingerprint detection system includes an integrating amplifier coupled to receive a photo-detected voltage from a sensor panel and configured to generate time integral of the photo-detected voltage, thereby resulting in a time-integral signal; and an analog-to-digital converter (ADC) that converts the time-integral signal into a digital form. A first common-mode voltage of the sensor panel is coupled to the integrating amplifier to prevent noise occurred in the first common-mode voltage from affecting the time-integral signal.

IPC Classes  ?

• G06F 3/042 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
• H03M 1/50 - Analogue/digital converters with intermediate conversion to time interval
• H03M 1/60 - Analogue/digital converters with intermediate conversion to frequency of pulses

Abstract

A low power consumption boost circuit for providing high driving voltage of a touch circuit is provided. The low power consumption boost circuit includes a charge pump circuit, two digital-to-analog converters (DACs), and a switch circuit. The charge pump circuit receives a system voltage and correspondingly outputs a positive output voltage twice the system voltage and a negative output voltage with opposite polarity as the system voltage. One of the DACs receives the positive output voltage from the charge pump circuit as supply voltage, and the other DAC receives the negative output voltage from the charge pump circuit as supply voltage. The switch circuit is connected between the DACs and the touch circuit. The DACs are connected between the charge pump circuit and the switch circuit. The DACs are alternately connected to the touch circuit by controlling the switch circuit, thereby driving the touch circuit alternately.

IPC Classes  ?

• H03K 17/96 - Touch switches
• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• H02M 1/00 - Details of apparatus for conversion
• H03M 1/66 - Digital/analogue converters

Abstract

A diffractive optical element and method for fabricating the diffractive optical element are provided. The diffractive optical element includes a substrate, a first diffractive structure layer and a second diffractive structure layer. The substrate has a first surface and a second surface opposite to the first surface. The first diffractive structure layer is disposed on the first surface of the substrate. The second diffractive structure layer is disposed on the second surface of the substrate. In the method for fabricating the diffractive optical element, at first, the substrate is provided. Then, a first glue material layer/first semiconductor layer is formed and patterned on the first surface of the substrate. Thereafter, a second glue material layer/second semiconductor layer is formed and patterned on the second surface of the substrate.

IPC Classes  ?

• G02B 5/18 - Diffracting gratings
• G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor

Abstract

A voice activity detection (VAD) system includes a voice frame detector that detects a voice frame during which a voice signal is not silent; and a voice detector that detects presence of human speech according to the voice frame.

IPC Classes  ?

• G10L 25/87 - Detection of discrete points within a voice signal
• G10L 25/93 - Discriminating between voiced and unvoiced parts of speech signals

Abstract

The fingerprint sensing circuit includes pixel sensors with photo sensors. Sensing currents produced by first pixel sensors are averaged. The average current is subtracted from sensing current produced by second pixel sensors to generate a difference current. During a capture period, a converting circuit outputs a digital signal in response to the difference current. This circuit aims to reduce noise in fingerprint recognition technology.

IPC Classes  ?

• G06V 40/13 - Sensors therefor

Abstract

The panel driving circuit includes a channel circuit, first pads, first switches, a second pad, and at least one second switch. The first pads are configured to be electrically connected to data lines of a cholesteric liquid crystal (CHLC) panel respectively. Each first switch has a first terminal electrically connected to the channel circuit, and a second terminal electrically connected to one of the first pads. Each second switch has a first terminal electrically connected to the second pad, and a second terminal electrically connected to the first pads. In a pixel charging period, the first switches are turned on, and the second switch is turned off. In a test period, the first switch is turned off, the second switch is turned on, and the second pad is configured to receive a measurement signal for measuring capacitance of pixels in the CHLC panel.

IPC Classes  ?

• G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals

Abstract

A driving circuit is provided, including first to second output stage circuits that output, respectively, first and second voltages of a first polarity. The driving circuit further includes a first switch having a first terminal receiving the first voltage from the first output stage circuit and a second terminal coupled to a first output channel through a switching circuit, and a second switch having a first terminal receiving the second voltage from the second output stage circuit and a second terminal coupled to a second output channel through the switching circuit. The driving circuit further includes a first charge sharing circuit having a first terminal coupled to the first output channel and a second terminal coupled to the second output channel. The first charge sharing circuit is turned on to provide charge sharing between the first output channel and the second output channel.

IPC Classes  ?

• H03K 3/012 - Modifications of generator to improve response time or to decrease power consumption
• H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

Abstract

A touch display device and an operating method for the touch display device are provided. The touch display device includes a touch display panel, a touch display driving circuit and a computing circuit. The touch display driving circuit drives the touch display panel to perform a display operation based on a scan frequency and to perform a touch sensing operation based on a plurality of touch sensing cycles. The computing circuit determines a plurality of scan finishing positions on the touch display panel in response to the scan frequency and the touch sensing cycles, receives a touch sensing data corresponding to the scan finishing positions, and compensates the touch sensing data based on a base value.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

A switchable projector module includes a holder, a projector, and a switchable diffuser. The holder includes a first connection tank and a second connection tank, in which the second connection tank is located at a side of the first connection tank. The second connection tank has a spilling glue trench. The projector is engaged with the first connection tank and is configured to project a pattern image onto the second connection tank. The switchable diffuser is engaged with the second connection tank. The switchable diffuser is configured to switch between a first mode and a second mode, so as not to diffuse the pattern image in the first mode and diffuse the pattern image in the second mode.

IPC Classes  ?

• G03B 21/20 - Lamp housings
• G03B 21/14 - Projectors or projection-type viewersAccessories therefor Details

Abstract

A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Abstract

A 3D sensing system is provided. The 3D sensing system includes a first sensing device, a second sensing device and a controller. The first sensing device provides at least one first emitting light and receives a first sensing signal based on a first sensing timing. The second sensing device provides at least one second emitting light and receives a second sensing signal based on a second sensing timing. The controller adjusts at least one of the first sensing timing and the second sensing timing according to an interference result of the second sensing signal by the first sensing device.

IPC Classes  ?

• G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
• G01S 7/481 - Constructional features, e.g. arrangements of optical elements

Abstract

A system for handling a thermal compensation comprises: an image capturing device comprising a capturing circuit, for capturing a first image, and a first sensing circuit, for detecting a first temperature; a projecting device comprising a second sensing circuit, for detecting a second temperature; a storage device, for storing a plurality of first parameters associated with the image capturing device, a plurality of second parameters associated with the projecting device and a reference image associated with the projecting device; and a processing device comprising a processing circuit, for compensating the first image according to the first temperature and the plurality of first parameters, to generate a first compensated image, compensating the reference image according to the second temperature and the plurality of second parameters, to generate a second compensated image, and generating a second image according to the first compensated image and the second compensated image.

IPC Classes  ?

• H04N 9/31 - Projection devices for colour picture display

Abstract

A structured light projector is disclosed, which includes a first light source, a second light source, an optical refractive element and an optical shaper. The first light source and the second light source are configured to respectively emit first incoherent light and second incoherent light. The optical refractive element is arranged over the first and second light sources for refracting the first incoherent light and the second incoherent light. The optical shaper element is arranged over the optical refractive element for shaping the first incoherent light to generate first structured light with plural first optical patterns and shaping the second incoherent light to generate second structured light with plural second optical patterns, in which the first structured light and the second structured light are overlapped onto a region of space.

IPC Classes  ?

• H04N 13/254 - Image signal generators using stereoscopic image cameras in combination with electromagnetic radiation sources for illuminating objects
• H04N 9/31 - Projection devices for colour picture display

Abstract

An amplifier with enhanced slew rate includes an input stage including a first channel coupled to receive differential inputs and a second channel coupled to receive the differential inputs; a middle stage including a first current source coupled to receive outputs of the second channel and electrically connected to power, a second current source coupled to receive outputs of the first channel and electrically connected to ground, and a floating current source electrically connected between the first current source and the second current source; and an output stage coupled to the middle stage to generate an output voltage. A transit circuit is disposed in the input stage or the middle stage, controlled by the output stage, and configured to supply extra current during signal transition of the differential inputs, thereby enhancing the slew rate.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers
• H03F 1/02 - Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
• H03F 3/04 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
• H03F 3/30 - Single-ended push-pull amplifiersPhase-splitters therefor

Abstract

A three-dimensional (3D) sensing device is configured to sense an object. The 3D sensing device includes a flood light source, a structured light source, an image sensor, and a controller. The controller is configured to perform: commanding the flood light source and the structured light source to emit a flood light and a structured light in sequence; commanding the image sensor to sense a first reflective light and a second reflective light in sequence, so as to obtain a first image frame and a second image frame; combining the first image frame and the second image frame into a determination frame; and determining that the object is a specular reflection object in response to determining that the determination frame has at least two spots having gray levels satisfying a predetermined condition. A specular reflection object detection method is also provided.

IPC Classes  ?

• G06T 7/44 - Analysis of texture based on statistical description of texture using image operators, e.g. filters, edge density metrics or local histograms
• G06T 7/514 - Depth or shape recovery from specularities

Abstract

The display system includes an automotive system, a display panel, and a panel driving circuit. The panel driving circuit receives a frame from the automotive system and determines if a panel error with respect to the display panel occurs. If the panel error occurs, the panel driving circuit replaces a portion of the frame with an error icon to generate a prompt frame, and transmit the prompt frame to the display panel. If the panel error does not occur, the panel driving circuit transmits the frame to the display panel.

IPC Classes  ?

• G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

A driving signal processing method for a large touch display integrated (LTDI) system is provided. The LTDI system includes plural LTDI chips that are concatenated. The LTDI chips include a master LTDI chip and plural slave LTDI chips. The driving signal processing method includes: receiving, by the LTDI chips, display data from a timing controller; and dispersedly outputting, by the master LTDI chip and at least one of the slave LTDI chips, M gate control signals respectively corresponding to M gate lines of a display panel of the LTDI system according to the display data during the display stage of the display panel.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
• G06F 3/147 - Digital output to display device using display panels

Abstract

The display device that includes a backlight module and a control circuit is introduced. The control circuit divides an input image to a plurality of blocks, calculates a backlight parameter of each of the blocks, calculates a first duty cycle shift and a second duty cycle shift according to a plurality of duty cycles in the backlight parameter, calculates a first weight value and a second weight value according to a maximum duty cycle, a minimum duty cycle, and a duty cycle mean, and calculates a peaking duty cycle the first duty cycle shift, the second duty cycle shift, the first weight value and the second weight value. The control circuit is further configured to generate an output backlight parameter according to the peaking duty cycle, wherein the corresponding lighting unit of the backlight module is driven according to the output backlight parameter.

IPC Classes  ?

• G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
• G02F 1/13357 - Illuminating devices

Abstract

A high-speed buffer amplifier includes an input stage including a first channel coupled to receive differential inputs and a second channel coupled to receive the differential inputs; a middle stage including a first current source coupled to receive outputs of the second channel and electrically connected to power, a second current source coupled to receive outputs of the first channel and electrically connected to ground, and a floating current source electrically connected between the first current source and the second current source; and an output stage coupled to the middle stage to generate an output voltage. A shunt circuit is electrically connected between the first current source and the second current source, and configured to bypass the floating current source.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers
• G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
• H03F 3/345 - DC amplifiers in which all stages are DC-coupled with semiconductor devices only with field-effect devices
• H03F 3/30 - Single-ended push-pull amplifiersPhase-splitters therefor

Abstract

A pad configuration adaptable to a display system includes a plurality of input bond pads, via which a driver of the display system is mounted and signals are inputted to the driver; and a plurality of output bond pads, via which the driver is mounted and signals are outputted to a display panel of the display system. Input and output bond pads corresponding to one of two neighboring drivers are point symmetric with input and output bond pads corresponding to the other of the two neighboring drivers.

IPC Classes  ?

• H05K 1/18 - Printed circuits structurally associated with non-printed electric components
• H05K 1/11 - Printed elements for providing electric connections to or between printed circuits
• H05K 1/14 - Structural association of two or more printed circuits

Abstract

The disclosure provides a daisy-chain serial peripheral interface (SPI) integrated circuit (IC) and an operation method thereof. The daisy-chain SPI IC includes a first MISO interface circuit, a second MISO interface circuit, a first data enable (DE) interface circuit, and a second DE interface circuit. When the daisy-chain SPI IC is a target slave circuit selected by a master IC for reading target data, the first DE interface circuit outputs a DE signal to the master IC, and the first MISO interface circuit sends back the target data to the master IC based on the timing of the DE signal. When the daisy-chain SPI IC is not the target slave circuit, the signal received by the second DE interface circuit is transmitted to the first DE interface circuit, and the data received by the second MISO interface circuit is transmitted to the first MISO interface circuit.

IPC Classes  ?

• G06F 13/40 - Bus structure
• G06F 1/10 - Distribution of clock signals
• G06F 13/42 - Bus transfer protocol, e.g. handshakeSynchronisation

Abstract

The invention provides a large touch display integrated (LTDI) circuit and an operation method thereof. The LTDI circuit is suitable as a slave IC of an serial peripheral interface (SPI) architecture. The LTDI circuit includes an open-drain circuit and a reload circuit. An output terminal of the open-drain circuit is configured to be coupled to a correctness wire outside the LTDI circuit. The correctness wire is also coupled to an input terminal of a master IC of the SPI architecture, and a potential of the correctness wire is pulled up by a pull-up resistor. The reload circuit is coupled to an input terminal of the open-drain circuit. The reload circuit is configured to check a correctness of a boot up code from the master IC to generate a correctness check result. The reload circuit returns the correctness check result to the master IC via the open-drain circuit and the correctness wire.

IPC Classes  ?

• G06F 13/362 - Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control
• G06F 11/10 - Adding special bits or symbols to the coded information, e.g. parity check, casting out nines or elevens
• G06F 9/4401 - Bootstrapping
• G06F 13/42 - Bus transfer protocol, e.g. handshakeSynchronisation

Abstract

A static random-access memory (SRAM) cell includes a first inverter and a second inverter being cross-coupled; a first access transistor that accesses an output of the first inverter under control of a word line; a second access transistor that accesses an output of the second inverter under control of the word line; a first passage transistor that passes a common-mode voltage, controlled by the output of the first inverter; a second passage transistor that passes an input signal, controlled by the output of the second inverter; and a capacitor switchably coupled to receive the common-mode voltage and the input signal through the first passage transistor and the second passage transistor respectively.

IPC Classes  ?

• G06N 3/063 - Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using electronic means
• G11C 5/06 - Arrangements for interconnecting storage elements electrically, e.g. by wiring
• G11C 7/16 - Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
• G11C 11/4074 - Power supply or voltage generation circuits, e.g. bias voltage generators, substrate voltage generators, back-up power, power control circuits
• G11C 11/4076 - Timing circuits
• G11C 11/408 - Address circuits
• G11C 11/4094 - Bit-line management or control circuits
• G11C 11/4099 - Dummy cell treatmentReference voltage generators
• G11C 11/54 - Digital stores characterised by the use of particular electric or magnetic storage elementsStorage elements therefor using elements simulating biological cells, e.g. neuron

Abstract

A serial peripheral interface (SPI) integrated circuit (IC) and an operation method thereof are provided. A SPI architecture includes a master IC and a slave IC. When the SPI IC is a master IC, the SPI IC generates first command information for a slave IC, generates first debugging information corresponding to the first command information, and sends the first command information and the first debugging information to the slave IC through a SPI channel. When the SPI IC is the slave IC, the SPI IC receives second command information and second debugging information sent by the master IC through the SPI channel and checks the second command information by using the second debugging information. When the SPI IC is a target slave circuit selected by the master IC, the SPI IC executes the second command information under a condition that the second command information is checked and is correct.

IPC Classes  ?

• G06F 13/362 - Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control
• G06F 13/42 - Bus transfer protocol, e.g. handshakeSynchronisation

Abstract

A micro-light-emitting diode (microLED) display panel includes a timing controller, and a plurality of drivers controlled by the timing controller and arranged in an order according to distance from the timing controller. Each driver includes a buffer that buffers a signal before being sent to a succeeding driver.

IPC Classes  ?

• G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]

Abstract

A multi-level voltage generator includes P-type metal-oxide-semiconductor (PMOS) transistors that generate corresponding positive voltages and a common voltage respectively, each PMOS transistor having a source connected to corresponding generated voltage, and a drain connected to an output node to provide the corresponding generated voltage; N-type metal-oxide-semiconductor (NMOS) transistors that generate corresponding negative voltages and the common voltage respectively, each NMOS transistor having a source connected to corresponding generated voltage, and a drain connected to the output node to provide the corresponding generated voltage; and body-voltage selectors that adaptively select a body voltage for the plurality of PMOS transistors and NMOS transistors respectively, except PMOS transistor associated with a highest positive voltage and NMOS transistor associated with a lowest negative voltage with body and source connected together.

IPC Classes  ?

• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

A start-up circuit includes series-connected first-type first transistors through which a start-up current flows in a start-up period, being connected between a positive power voltage and an inner node; and a first-type second transistor through which a boost current flows in the start-up period, being connected between the positive power voltage and the inner node, and with a gate connected to an output node that provides a bias voltage.

IPC Classes  ?

• G05F 3/24 - Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode-transistor combinations wherein the transistors are of the field-effect type only
• G05F 1/46 - Regulating voltage or current wherein the variable actually regulated by the final control device is DC
• G05F 3/16 - Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices

Abstract

A system for calibrating a three-dimensional scanning device includes a structured-light scanner capable of performing a structured-light operation, and a processor that performs calibration on a device under calibration (DUC). The structured-light scanner captures a base image by performing the structured-light operation prior to calibration. The structured-light scanner captures a calibration image with respect to corresponding DUC during calibration, and the calibration image is inputted to the processor, which determines transformation mapping from the calibration image to the base image. The determined transformation is then transferred to the DUC during calibration.

IPC Classes  ?

• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
• G06T 17/00 - 3D modelling for computer graphics
• G06V 20/64 - Three-dimensional objects

Abstract

A three-dimensional sensing system includes a plurality of scanners each emitting a light signal to a scene to be sensed and receiving a reflected light signal, according to which depth information is obtained. Only one scanner executes transmitting corresponding light signal and receiving corresponding reflected light signal at a time.

IPC Classes  ?

• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
• G06T 17/00 - 3D modelling for computer graphics
• G06V 20/64 - Three-dimensional objects

Abstract

A timing controller circuit is arranged to control at least a gate in panel (GIP) circuit in a display panel, and includes a data receiving circuit, a timing detection circuit, a control circuit, and a data transmitting circuit, wherein the data receiving circuit is arranged to receive an image data, the timing detection circuit is coupled to the data receiving circuit, and is arranged to detect an input timing of the image data, the control circuit is coupled to the timing detection circuit, and is arranged to determine a GIP timing of the GIP circuit according to the input timing of the image data, and generate a timing control output according to the GIP timing, and the data transmitting circuit is coupled to the control circuit, and is arranged to transmit the timing control output to the GIP circuit.

IPC Classes  ?

• G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals

Abstract

A waveguide combiner includes an in-coupling area, a waveguide body and an out-coupling area. The in-coupling area is configured to introduce a light beam. The waveguide body is configured to guide the light beam introduced by the in-coupling area. The out-coupling area is configured to output the light beam guided by the waveguide body. The waveguide body includes at least one of a beam-expanding part configured to expand the light beam to a predetermined direction by reflecting the light beam and a beam-folding part configured to change the light beam to a different direction by reflecting the light beam.

IPC Classes  ?

• G02B 6/26 - Optical coupling means
• G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for

Abstract

A process of overlay offset measurement includes providing a substrate; forming a first pattern layer with a predetermined first pattern on the substrate; forming a first photoresist layer on the substrate and the first pattern layer; forming a second photoresist layer on the first photoresist layer; forming a second pattern layer with a predetermined second pattern on the second photoresist layer; patterning the second photoresist layer to form a trench having a predetermined third pattern being substantially aligned with the predetermined first pattern of the first pattern layer; and performing overlay offset measurement according to the second pattern layer and the trench.

IPC Classes  ?

• H01L 27/146 - Imager structures
• H01L 23/544 - Marks applied to semiconductor devices, e.g. registration marks, test patterns
• G03F 1/70 - Adapting basic layout or design of masks to lithographic process requirements, e.g. second iteration correction of mask patterns for imaging

Abstract

A touch event processing circuit includes a plurality of receiving circuits and an average circuit. Each of the plurality of receiving circuits includes a first integrator circuit, a resistor, and a touch event detection circuit. The first integrator circuit is arranged to receive an input signal that includes a voltage sensing signal from a touch panel, and output a first integrated voltage signal. The resistor has a first terminal coupled to an output terminal of the first integrator circuit and a second terminal. The touch event detection circuit is arranged to detect a touch event according to the output from the second terminal of the resistor and a voltage average signal. The average circuit is arranged to: receive a plurality of first integrated voltage signals from the plurality of receiving circuits; and perform an average operation upon the plurality of first integrated voltage signals, to generate the voltage average signal.

IPC Classes  ?

• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

An object detection system includes a projector that projects an original transmitted light on a scene containing an object; an adjustable device configured to shape the original transmitted light, thereby generating a shaped transmitted light; and an image capture device configured to capture an image from a reflected light from the scene. The original transmitted light is alternated with the shaped transmitted light, thereby resulting in an integrated image captured by the image capture device.

IPC Classes  ?

• G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings
• G03B 21/20 - Lamp housings
• H04N 23/56 - Cameras or camera modules comprising electronic image sensorsControl thereof provided with illuminating means

Abstract

A display system includes an image display device and a pair of shutter glasses. The image display device includes a display panel, a display communication circuit and a control circuit. The control circuit is configured to control the display communication circuit to transmit a shutter glasses control signal, and configured to control the display panel to alternately display a normal image and a compensate image according to a timing control signal. The pair of shutter glasses includes a pair of shutters, a glasses communication circuit and a shutter control circuit. The glasses communication circuit is configured to receive the shutter glasses control signal. The shutter control circuit is configured to alternately open and close the pair of shutters according to the shutter glasses control signal.

IPC Classes  ?

• G02B 26/04 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
• G02B 27/01 - Head-up displays
• H04N 13/341 - Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
• H04N 13/398 - Synchronisation thereofControl thereof

Abstract

An object detection method, for detecting a target object, comprising: capturing at least two detection portions with a first aspect ratio from an input image with a second aspect ratio; confirming whether any object is detected in each of the detection portions and obtaining corresponding boundary boxes for detected objects; and wherein the first aspect ratio is different to the second aspect ratio.

IPC Classes  ?

• G06V 10/22 - Image preprocessing by selection of a specific region containing or referencing a patternLocating or processing of specific regions to guide the detection or recognition
• G06T 7/20 - Analysis of motion
• G06T 3/40 - Scaling of whole images or parts thereof, e.g. expanding or contracting
• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
• G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
• G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands

Abstract

Circuit for performing a display driving function and a fingerprint and touch detecting function includes a unity gain buffer amplifier, an operational amplifier integrator, an ADC circuit, and a digital processing circuit coupled to the ADC circuit. An input terminal of the operational amplifier integrator is coupled to a touch sensor. When the circuit is operated under a display driving mode, an input terminal of the unity gain buffer amplifier receives a gray level voltage and an output terminal of the unity gain buffer amplifier is coupled to a display panel. When the circuit is operated under a fingerprint detecting mode, the input terminal and the output terminal of the unity gain buffer amplifier are respectively coupled to a fingerprint sensor and the ADC circuit. When the circuit is operated under a touch detecting mode, an output terminal of the operational amplifier integrator is coupled to the ADC circuit.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06V 40/13 - Sensors therefor
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

Circuit for performing a display driving function and a fingerprint and touch detecting function includes a unity gain buffer amplifier, an operational amplifier integrator, an ADC circuit, and a digital processing circuit coupled to the ADC circuit. An input terminal of the operational amplifier integrator is coupled to a touch sensor. When the circuit is operated under a display driving mode, an input terminal of the unity gain buffer amplifier receives a gray level voltage and an output terminal of the unity gain buffer amplifier is coupled to a display panel. When the circuit is operated under a fingerprint detecting mode, the input terminal and the output terminal of the unity gain buffer amplifier are respectively coupled to a fingerprint sensor and the ADC circuit. When the circuit is operated under a touch detecting mode, an output terminal of the operational amplifier integrator is coupled to the ADC circuit.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06V 40/13 - Sensors therefor
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
• G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Abstract

An acoustic feature extraction (AFE) circuit includes a plurality of band-pass filters (BPFs) adaptable to a plurality of channels with different band-pass frequency ranges respectively for switchably receiving an amplified signal, thereby generating corresponding filtered signals, the plurality of BPFs including an operational amplifier that is shared among the plurality of channels; and a rectifier switchably coupled to receive the filtered signals, thereby generating a rectified signal. The amplified signal is time-division demultiplexed onto the BPFs in different phases, and the filtered signals are time-division multiplexed onto the rectifier in different phases.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers
• G10L 15/02 - Feature extraction for speech recognitionSelection of recognition unit
• G10L 25/84 - Detection of presence or absence of voice signals for discriminating voice from noise

Abstract

A waveguide combiner includes an in-coupling area, a waveguide body, an out-coupling area and at least one film layer. The in-coupling area is configured to introduce a light beam. The waveguide body is configured to guide the light beam introduced by the in-coupling area. The out-coupling area is configured to output the light beam guided by the waveguide body. Said at least one film layer is embedded in at least one portion of the in-coupling area, the waveguide body and the out-coupling area. Said at least one film layer is configured to divide said at least one portion of the in-coupling area, the waveguide body and the out-coupling area into a plurality of layers, and the light beam is reflected by said at least one film layer or penetrates said at least one film layer between different layers of the plurality of layers.

IPC Classes  ?

• G02B 27/01 - Head-up displays
• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems

Abstract

A mounting fixture of an apparatus for clamping a film includes a platform, a barricade, and fixing members. A surface of the platform includes a first fixing portion, and second and third fixing portions which are opposite to the first fixing portion. The second fixing portion is adjacent to the third fixing portion and located between the first and third fixing portions. The barricade is disposed on the surface between the second and third fixing portions and has channels. The fixing members are disposed on the surface. First, second, and third bars of the apparatus are disposed on the first, second, and third fixing portions, the barricade is located between the second and third bars, and the channels receive elastic elements of the apparatus. Each elastic element has two ends disposed on the second and third bars. The fixing members can fix the first and third bar.

IPC Classes  ?

• G03F 7/20 - ExposureApparatus therefor
• B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
• B29C 51/26 - Component parts, details or accessoriesAuxiliary operations
• G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor

Abstract

An overdrive system includes a compressor that compresses an input signal to result in a compressed signal; a weighting device that generates a weighted sum of a current compressed signal and a current input signal, thereby resulting in a weighted current signal; and an overdriver that performs an overdrive operation according to a previous compressed signal and the weighted current signal.

IPC Classes  ?

• G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
• G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators

Abstract

A method for performing region-of-interest (ROI)-based depth detection with aid of a pattern-adjustable projector and associated apparatus are provided. The method includes: utilizing a first camera to capture a first image, wherein the first image includes image contents indicating one or more objects; utilizing an image processing circuit to determine a ROI of the first image according to the image contents of the first image; utilizing the image processing circuit to perform projection region selection to determine a selected projection region corresponding to the ROI among multiple predetermined projection regions, wherein the selected projection region is selected from the multiple predetermined projection regions according to the ROI; utilizing the pattern-adjustable projector to project a predetermined pattern according to the selected projection region, for performing depth detection; utilizing a second camera to capture a second image; and performing the depth detection according to the second image to generate a depth map.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06T 7/571 - Depth or shape recovery from multiple images from focus
• G06T 7/536 - Depth or shape recovery from perspective effects, e.g. by using vanishing points
• G06V 10/20 - Image preprocessing