Abstract

A display driving device and a display driving method are provided. The display driving device includes an image analysis module and a brightness adjustment module. The image analysis module analyzes a display data to determine a brightness boost region in a display image corresponding to the display data. The brightness adjustment module is coupled to the image analysis module. The brightness adjustment module executes a brightness boost operation corresponding to the brightness boost region, and calculates an accumulated time of the brightness boost operation. When the brightness adjustment module determines the accumulated time exceeds a first preset time length threshold, the brightness adjustment module executes a brightness dimming operation corresponding to the brightness boost region.

IPC Classes  ?

• G09G 5/10 - Intensity circuits

Abstract

An operational amplifier (OPA) includes an output stage composed of a P-type output transistor and an N-type output transistor connected in series between a power supply and ground, the N-type output transistor being controlled by a first control voltage and the P-type output transistor being controlled by a second control voltage; a first leakage eliminating circuit configured to prevent a sinking current through the N-type output transistor from entering the ground when an input voltage rises from a low voltage level to a high voltage level; and a second leakage eliminating circuit configured to prevent a sourcing current through the P-type output transistor from entering a load when the input voltage falls from the high voltage level to the low voltage level.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers
• H03F 1/30 - Modifications of amplifiers to reduce influence of variations of temperature or supply voltage

Abstract

An optical fiber array includes a groove plate having a plurality of grooves disposed on a top surface thereof; and an optical component plate having a plurality of first optical components disposed on a first surface of the optical component plate and a plurality of second optical components disposed on a second surface of the optical component plate, the second surface being opposite the first surface.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means
• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means

Abstract

An image display device comprises a memory, a control circuit, and a memory controller. The memory is configured to store a setting file of the image display device. The control circuit is configured to receive an image data. The control circuit comprises a code converter configured to convert a plurality of row display data of the image data respectively into a plurality of update instructions, wherein each row display data comprises a plurality of pixel brightness data and each pixel brightness data comprises a plurality of subpixel brightness data, each subpixel brightness data is converted into an update code of the update instruction by determining whether each subpixel brightness data falls within a first brightness range or a second brightness range. The memory controller is configured to update the setting file according to the update code.

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 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

The display driving device includes a processing module and a dithering module. The processing module is coupled to the dithering module. The processing module is configured to analyze reference image data to record a first dithering map, and compare the first dithering map with a second dithering map of the dithering module. When the processing module determines that the first dithering map and the second dithering map have same carry points at same pixel positions, the processing module is further configured to calibrate the second dithering map to generate a calibrated second dithering map.

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 driving device and an image compensation method are provided. The display driving device includes an accumulation module, a calculation module, and a compensation module. The accumulation module accumulates a first gray level accumulation value of a plurality of positive polarity pixels and a second gray level accumulation value of a plurality of negative polarity pixels. The calculation module calculates a normalized difference value of the first gray level accumulation value and the second gray level accumulation value, and adjusts a first offset value and a second offset value according to a weight value corresponding to the normalized difference value to generate an adjusted first offset value and an adjusted second offset value. The compensation module compensates a plurality of target compensation pixels according to the adjusted first offset value and the adjusted second offset value.

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 5/36 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of individual graphic patterns using a bit-mapped memory

Abstract

An image compression system includes a memory having a frame buffer, a temporal noise reduction (TNR) circuit, a compression circuit, and a controller. The temporal noise reduction circuit is configured to receive a frame from an image sensor and blend the frame with a decompressed reference frame from the frame buffer into a temporal noise reduction frame. The compression circuit is configured to receive the temporal noise reduction frame from the TNR circuit and compress the temporal noise reduction frame into a compressed reference frame utilizing a ratio in the frame buffer, wherein the compression circuit is further configured to decompress the compressed reference frame in the frame buffer by the ratio as the decompressed reference frame. The controller is configured to adaptively increase the ratio according to a number of program(s) to ensure an adequate memory space of the memory for executing the program(s).

IPC Classes  ?

• G06T 9/00 - Image coding

Abstract

A method of luminance compensation includes determining a speed of an object according to a PWM (pulse width modulation) table of a current frame and a PWM table of a previous frame; generating a new PWM table according to the speed and the PWM table of the current frame; and performing luminance compensation according to the PWM table of the current frame and the new PWM table.

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
• 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 time of flight correction method includes measuring a plurality of phases of electromagnetic waves and a plurality of amplitudes of the electromagnetic waves using a time of flight (ToF) module, inputting the plurality of phases and the plurality of amplitudes into a pre-trained neural network model to output a plurality of phase corrections, adding the plurality of phases and the plurality of phase corrections to output a plurality of corrected phases, and converting the plurality of corrected phases to output a plurality of corrected ranges between the ToF module and surrounding targets.

IPC Classes  ?

• H04N 25/617 - Noise processing, e.g. detecting, correcting, reducing or removing noise for reducing electromagnetic interference, e.g. clocking noise
• G01S 7/292 - Extracting wanted echo-signals
• G01S 7/487 - Extracting wanted echo signals
• G01S 7/493 - Extracting wanted echo signals
• 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

Abstract

A display device and an operating method are provided. The display device includes a liquid crystal display (LCD) panel, a driver circuit, a switch circuit, and a timing controller. The LCD panel comprises a plurality of data lines. The driver circuit is configured to provide a first data signal to a first data line of the plurality of data lines in a first frame time. The switch circuit comprises a first switch configured to provide the first data signal to the first data line according to a first control signal. The timing controller is configured to provide the first control signal switching within a first voltage range when the first data signal has a first polarity, and provide the first control signal switching within a second voltage range different from the first voltage range when the first data signal has a second polarity.

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 signal generator includes a window function code generator, a sine wave code generator, an operation circuit and a signal converter. The window function code generator generates a first code corresponding to a window of a first sine wave. The sine wave code generator generates a second code corresponding to a second sine wave, wherein a frequency of the second sine wave is higher than a frequency of the first sine wave. The operation circuit is coupled to the window function code generator and the sine wave code generator, and performs an operation on the first code and the second code to generate an output code. The signal converter is coupled to the operation circuit and generates a touch driving voltage of a driving signal by converting the output code.

IPC Classes  ?

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

Abstract

A power amplifier includes a voltage converter that converts an input voltage to a converted voltage; an output circuit coupled to receive the converted voltage and configured to generate an output voltage at an output node; a discharge transistor electrically connected between the output node and earth and configured to perform discharge at the output node under control of a control voltage; a voltage tracking circuit that tracks the input voltage; and an electric charge storage circuit being under control of the voltage tracking circuit and configured to maintain the control voltage when the input voltage drops to a predetermined voltage level in order to continuously turn on the discharge transistor before completing discharge at the output node.

IPC Classes  ?

• H03F 1/02 - Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
• H03F 3/213 - Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits

Abstract

A red, green, blue and infrared (RGBIR) image processing system includes an RGBIR-Bayer converter that converts RGBIR raw data to Bayer raw data, and a Bayer-RGB converter that converts the Bayer raw data to RGB color data. The Bayer-RGB converter includes a color adjusting device that adjusts color information of the Bayer raw data, thereby generating adjusted data.

IPC Classes  ?

• G06T 3/4015 - Image demosaicing, e.g. colour filter arrays [CFA] or Bayer patterns
• G06T 5/92 - Dynamic range modification of images or parts thereof based on global image properties
• G06V 10/56 - Extraction of image or video features relating to colour
• H04N 9/73 - Colour balance circuits, e.g. white balance circuits or colour temperature control

Abstract

A current sensing circuit includes an output driving transistor with an output node that provides an output voltage; a diode-connected first transistor connected between the output node and a current circuit; a second transistor and a third transistor connected in series, the second transistor having a gate connected to a gate of the output driving transistor, and the third transistor having a gate connected to a gate of the first transistor; and a current measuring circuit connected in series with the second transistor and the third transistor to measure a current flowing through the second transistor and the third transistor.

IPC Classes  ?

• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

Abstract

A depth sensing device and a depth sensing method are provided. The depth sensing device includes a processor, a dot projector, and a camera. The dot projector is coupled to the processor. The dot projector projects a plurality of amplitude modulated optical signals to a sensing target. The camera is coupled to the processor. The camera photographs a plurality of reflected light signals from the sensing target to obtain a plurality of dot images. The processor generates a first reference depth map of indirect time-of-flight ranging and a second reference depth map of structured light ranging according to the plurality of dot images. The processor generates a depth map corresponding to the sensing target according to the first reference depth map and the second reference depth map.

IPC Classes  ?

• G01S 17/46 - Indirect determination of position data
• 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

Abstract

A gamma reference voltage generator includes a voltage difference generating circuit, a selection voltage generating circuit and a voltage calculating circuit. The voltage difference generating circuit generates a first voltage difference and a second voltage difference. The selection voltage generating circuit generates an initial voltage and receives a power source voltage and selectively outputs the initial voltage or the power source voltage as a selection voltage according to a voltage level of the power source voltage. The voltage calculating circuit receives the selection voltage, the first voltage difference and the second voltage difference and correspondingly output a first gamma reference voltage and a second gamma reference voltage, in which the first gamma reference voltage is a sum of the selection voltage and the first voltage difference, and the second gamma reference voltage is a difference between the selection voltage and the second voltage difference.

IPC Classes  ?

• G09G 3/3233 - 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] using an active matrix with pixel circuitry controlling the current through the light-emitting element
• G09G 3/3266 - Details of drivers for scan electrodes

Abstract

A structured light sensing module including a structured light source, a sensing device and a plurality of polarizing units is provided. The structured light source is configured to emit structured light having a polarization toward a sensing target. The sensing device is configured to receive the structured light reflected from the sensing target and has a plurality of sensing units. The polarizing units are disposed on a side of a light-receiving surface of the sensing device, and respectively overlap the plurality of sensing units. Each polarizing unit includes at least four polarizing patterns. Each of the at least four polarizing patterns has an absorption axis. The axial directions of the absorption axes of the at least four polarizing patterns are different from each other.

IPC Classes  ?

• G01S 7/499 - Details of systems according to groups , , of systems according to group using polarisation effects
• G01S 7/481 - Constructional features, e.g. arrangements of optical elements
• G01S 7/4913 - Circuits for detection, sampling, integration or read-out
• G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging

Abstract

The disclosure provides a pixel brightness compensation method, including: obtaining a current grayscale value of a pixel in a display and an accumulated operating time, a current temperature, and a current display brightness value of the display; determining a first gain value and a third gain value according to the current grayscale value, the current temperature and the accumulated operating time; generating a second gain value according to the current display brightness value; and converting the current grayscale value to a target grayscale value for the pixel by the first gain value, the second gain value, and the third gain value.

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 object detection method and an object detection apparatus are disclosed. In the object detection method, a bitstream of a progressively encoded JPEG image is fetched from an image supply device, wherein the bitstream includes a header and a subset of a plurality of discrete cosine transform (DCT) coefficients of the JPEG image, the subset of the DCT coefficients is decoded according to information in the header to reconstruct a coarse scan image of the JPEG image; and an object detection is performed on the coarse scan image to detect an object in the JPEG image.

IPC Classes  ?

• G06V 10/20 - Image preprocessing
• G06T 7/20 - Analysis of motion
• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
• H04N 19/164 - Feedback from the receiver or from the transmission channel
• H04N 19/18 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
• H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

A touch detection circuit includes a plurality of driving signal generators. The driving signal generators are divided into a plurality of driving signal generator groups, and each of the driving signal generator groups comprises at least one of the driving signal generators. The driving signal generators respectively generate a plurality of driving signals, and a frequency of each of the driving signals in one of the driving signal generator groups is different from a frequency of each of the driving signals in another one of the driving signal generator groups.

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 projector is provided, which includes a light source for emitting incident light rays, a pancake lens assembly, and optical element assembly for forming a pattern by the incident light rays emitted from the pancake lens assembly. A pancake lens assembly includes a polarizer, a wave plate, and a lens connected to the polarizer or the wave plate. The pancake lens assembly is disposed between the light source and the optical element assembly and configured to fold light path of the incident light rays based on the polarization of the incident light rays in order to reduce the total module height of the projector.

IPC Classes  ?

• G03B 21/20 - Lamp housings

Abstract

A pattern projector including a laser source, a metasurface, and a light sensor is provided. The laser source is configured to emit a laser beam. The metasurface is disposed on a path of the laser beam and configured to diffract the laser beam onto a projected surface, so as to form a pattern on the projected surface. The light sensor is disposed beside the metasurface and configured to sense the pattern.

IPC Classes  ?

• G01B 11/22 - Measuring arrangements characterised by the use of optical techniques for measuring depth
• G01S 7/481 - Constructional features, e.g. arrangements of optical elements

Abstract

A multi-function projector includes a multi-wavelength laser source, a metasurface, and a light sensor. The multi-wavelength laser source is configured to emit a laser beam, wherein a wavelength of the laser beam is capable of being switched to a first wavelength or a second wavelength. The metasurface is disposed on a path of the laser beam and configured to diffract the laser beam onto a projected surface. The metasurface is configured to diffract the laser beam with the first wavelength to form a light pattern on the projected surface, and the metasurface is configured to diffract the laser beam with the second wavelength to form flood illumination on the projected surface. The light sensor is disposed beside the metasurface and configured to sense the projected surface.

IPC Classes  ?

• G03B 21/20 - Lamp housings
• B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals
• G03B 17/54 - Details of cameras or camera bodiesAccessories therefor adapted for combination with other photographic or optical apparatus with projector

Abstract

A cascade touch control system includes a touch panel composed of a plurality of transmit lines and a plurality of receive lines; and a plurality of drivers controlling corresponding blocks of the touch panel, each block being divided into matrices each including same number of transmit lines and receive lines. Multi-tone touch control is performed on matrices of the blocks. For each matrix of each block, transmit signals are transmitted in each time interval associated with a corresponding receive line, of which one transmit signal has a phase opposite to other transmit signals, and different transmit signals with the opposite phase correspond to different time intervals.

IPC Classes  ?

• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
• G06F 1/03 - Digital function generators working, at least partly, by table look-up
• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/05 - Digital input using the sampling of an analogue quantity at regular intervals of time
• G06F 3/03 - Arrangements for converting the position or the displacement of a member into a coded form

Abstract

A touch control system includes a touch panel composed of a plurality of transmit lines and a plurality of receive lines; a transmitter that transmits at least one transmit signal to corresponding transmit line; a receiver that receives at least one receive signal from corresponding receive line; and a non-tapered continuous wave generator that generates a non-tapered continuous wave signal as a transmit signal for the transmitter.

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
• H03M 1/12 - Analogue/digital converters

Abstract

A light source module having a wide field of view (FOV) is provided. The light source module includes a plurality of point light sources and a total internal reflection (TIR) lens array. The point light sources are configured to respectively emit a plurality of light beams. The TIR lens array is disposed on paths of the light beams and includes a transparent substrate and a plurality of TIR lenses arranged on the transparent substrate. The transparent substrate is located between the point light sources and the TIR lenses. Each of the TIR lenses has an inclined surface inclined with respect to the transparent substrate, and inclined surfaces of the TIR lenses are configured to totally internally reflect the light beams to form the wide FOV.

IPC Classes  ?

• F21V 5/00 - Refractors for light sources
• F21Y 113/00 - Combination of light sources
• F21Y 115/30 - Semiconductor lasers

Abstract

An optical module and a related projector are disclosed. The optical module includes a light source and an optical structure. The light source emitting a light, and the optical structure is disposed on the light source for receiving the light. The optical structure includes a first surface and a second surface. The first surface is configured to deflect the light. The second surface has a plurality of microstructures and is configured to project a predetermined pattern when the light passing through the second surface, and the second surface corresponds to the first surface.

IPC Classes  ?

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

Abstract

A single-inductor multiple-output DC-DC converter includes a first power switch controlled by a first power switch signal and a second power switch controlled by a second power switch signal, connected in series between a positive supply voltage and a negative supply voltage, and interconnected at an input node; a single inductor with a first end connected to the input node; a plurality of output switches, controlled by corresponding output switch signals, connected in parallel with first ends connected to a second end of the inductor, second ends of the output switches, acting as output nodes, providing corresponding output voltages respectively; and a dual mode charge controller coupled to receive an input voltage at the input node, to receive the output voltages, to receive a state flag, and configured to accordingly generate the first and second power switch signals and the output switch signals.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

A single-inductor bipolar-output converter includes a power stage that generates a positive output voltage and a negative output voltage; a first error amplifier that generates a first error signal according to the positive output voltage; a second error amplifier that generates a second error signal according to the negative output voltage; a summation device that generates a sum signal by adding the first error signal and the second error signal; and a tunable gain control circuit coupled to receive the first error signal and configured to generate an amplified first error signal with a tunable gain.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

A test method for performing a factory test on an automotive IC includes: performing a logic test on the automotive IC by sending one or more logic test input signals to the automotive IC to generate one or more logic test output signals; while the automotive IC is generating the one or more logic test output signals, utilizing a safety detection circuit within the automotive IC to determine whether at least one analog voltage of an analog circuit block of the automotive IC falls within a predetermined range to generate an analog test result; and determining whether the automotive IC passes the factory test according to at least the logic test output signals and the analog test result.

IPC Classes  ?

• G01R 31/3177 - Testing of logic operation, e.g. by logic analysers
• G01R 31/317 - Testing of digital circuits

Abstract

A touch detection circuit includes at least one driving signal generator. The least one driving signal generator receives a first power voltage and a second power voltage as operation powers. Each of the at least one driving signal generator generates at least one driving signal based on the first power voltage and a second power voltage and each of the at least one driving signal swings between a first voltage and a second voltage, wherein the first voltage is a positive voltage and the second voltage is a negative voltage.

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 time-of-flight sensing system including a first light source, a second light source, a sensing device and a filter layer is provided. The sensing device has a plurality of first sensing pixels and a plurality of second sensing pixels. The filter layer is disposed on a side of a light-receiving surface of the sensing device. The filter layer has a plurality of first filter patterns overlapping the first sensing pixels and a plurality of second filter patterns overlapping the second sensing pixels. The first light source and the second light source respectively and sequentially emit the first light beam having a first wavelength and the second light beam having a second wavelength toward a sensing target. The first sensing pixels and the second sensing pixels simultaneously and respectively sense the first light beam and the second light beam reflected from the sensing target. A time-of-flight sensing method is also provided.

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

Abstract

A time-of-flight sensing system including a laser scanning module, a sensing device and a control circuit is provided. The laser scanning module is configured to sequentially and respectively provide a plurality of first laser beams to a plurality of first sub-areas of a sensing target. The sensing device is configured to receive the first laser beams respectively reflected from the first sub-areas of the sensing target. The control circuit is electrically coupled to the laser scanning module and the sensing device, and is configured to calculate first depth signals of the first sub-areas of the sensing target according to the first laser beams sequentially and respectively reflected from the first sub-areas of the sensing target and received by the sensing device. A time-of-flight sensing method is also provided.

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
• G01B 11/22 - Measuring arrangements characterised by the use of optical techniques for measuring depth
• G01S 7/481 - Constructional features, e.g. arrangements of optical elements

Abstract

A three-dimensional display system, a driving circuit, and a display method are provided. The three-dimensional display system includes an eye tracking module, a driving circuit, and a host device. The eye tracking module is configured to generate eye tracking data including a scene image and a scene depth map, and perform eye detection to output an eye position data and an eye depth data. The driving circuit is coupled to the eye tracking module, and configured to receive the eye position data and the eye depth data. The host device is coupled to the driving circuit, and configured to provide original three-dimensional image data. The driving circuit is further configured to dynamically adjust the original three-dimensional image data to generate an adjusted three-dimensional image data according to the eye position data and the eye depth data.

IPC Classes  ?

• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
• 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
• G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators

Abstract

A compensating circuit and a compensating method for a pixel data of a display device are provided. The compensating circuit includes a color calculator, a gain value generator and a calculating circuit. The color calculator generates a color value according to a color of the pixel data. The gain value generator generates a first gain value according to the color value and a duty cycle of an emission driving signal, and generates a second gain value according to the duty cycle and a gray value of the pixel data. The calculating circuit calculates a compensated pixel data according to the pixel data, the first gain value and the second gain value.

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

Abstract

A light-emitting diode (LED) control system includes a LED array composed of a plurality of LED channels each being composed of a plurality of LEDs; a plurality of LED drivers connected in sequence each being configured to drive a corresponding LED channel, the LED channels being controlled in sequence by the LED drivers; and a LED controller that sends brightness data to the LED drivers, which in turn control brightness of the LEDs. After brightness data input has been transferred to an associated LED driver, the brightness data input is then replaced with status data returned by the associated LED driver, and the replaced status data is finally read by the LED controller via other LED drivers.

IPC Classes  ?

• H05B 45/14 - Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
• H05B 45/325 - Pulse-width modulation [PWM]
• H05B 45/50 - Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDsCircuit arrangements for operating light-emitting diodes [LED] responsive to LED lifeProtective circuits

Abstract

A signal receiver includes a signal receiving line, a signal processing circuit and a compensation circuit. The signal receiving line receives a driving signal through a first capacitor and is coupled to a plurality of display pixel circuits through a second capacitor. The signal processing circuit is coupled to the signal receiving line, receives a received signal on the signal receiving line and generates a touch detection information according to the received signal. The compensation circuit is coupled to the signal receiving line, generates a first compensation current according to driving currents of the display pixel circuits, generates a second compensation current according to sinking currents of the display pixel circuits, and generates a compensation signal according to the first compensation current and the second compensation current.

IPC Classes  ?

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

Abstract

A display device includes a plurality of display area substrates, a common voltage generator and at least one AC voltage generator. The display area substrates are disposed in a display panel, wherein each of the display area substrates receives a gate line signal, a source line signal and a common voltage. The common voltage generator is coupled to the display area substrates for generating the common voltage to each of the display area substrates. The AC voltage generator is coupled to the common voltage generator, for generating an adjusting voltage to the common voltage according to driving current information of a plurality of source drivers of the display device, wherein the adjusting voltage has an AC voltage level.

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

Abstract

A display system with electromagnetic susceptibility includes a programmable gamma circuit capable of being adjusted dynamically to supply a programmable gamma voltage curve that provides gamma voltage; a timing controller that receives image data and converts format of the received image data, thereby generating data signal; and a source driver that receives the data signal from the timing controller and the gamma voltage from the programmable gamma circuit. The source driver sends a notification signal to the timing controller indicating that the data signal is not properly received, and the timing controller then programs the programmable gamma circuit to provide an offset voltage level to binding points of the programmable gamma circuit for a predetermined time period.

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 3/36 - 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 of motion adaptive spatial smoothing includes determining a difference of a block duty of a selected block of a current frame and a block duty of the selected block of a previous frame, generating an original smoothing matrix for the selected block, generating a motion adaptive matrix according to the original smoothing matrix and a difference of the block duty of the selected block of the current frame and the block duty of the selected block of the previous frame, updating a block duty for each block with a corresponding motion adaptive matrix to generate an updated frame, and performing spatial smoothing for the updated frame.

IPC Classes  ?

• H04N 19/513 - Processing of motion vectors
• G06T 5/70 - DenoisingSmoothing

Abstract

A circuit, for a touch panel, comprises a plurality of touch signal processing circuits, coupled to a plurality of sensors of the touch panel to receive a plurality of touch signals, wherein when a first sensor within the plurality of sensors is touched, the first sensor generates a first touch signal of the plurality of touch signals; and a controller, coupled to the plurality of touch signal processing circuits, configured to adjust the first touch signal according to the plurality of touch signals except the first touch 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 circuit, for a touch panel, comprising N touch signal processing circuits; a backup processing circuit; and a controller, coupled to the N touch signal processing circuits and the backup processing circuit, configured to determine whether one of the N touch signal processing circuits is failed and generate a determining result, and control the N touch signal processing circuits and the backup processing circuit to process N touch signals received from the touch panel to obtain N digital signals according to the determining result.

IPC Classes  ?

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

Abstract

A luminance control circuit and a luminance control method are provided. The luminance control circuit includes a first converter, average pixel level (APL) calculator, a luminance adjusting circuit and a second converter. The first converter converts a gray level result of an image data into at least one luminance. The APL calculator generates an APL value according to the at least one luminance. The luminance adjusting circuit generates at least one adjusting value according to the APL value and adjust the at least one luminance to be at least one adjusted luminance using the least one adjusting value. The second converter converts the at least one adjusted luminance into an adjusted gray level result of the image data. The adjusted gray level result is negative correlated with the APL value.

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 driving system, configured to control a scan operation of a display, comprising: a scan control circuit, configured to receive a start position signal and to generate a switch selecting signal according to the scan start position signal; and a scan switch circuit, coupled to the display and the scan control circuit, and comprising a plurality of switches, configured to turn on one of the switches according to the switch selecting signal, to control the display to start the scan operation at a scan start position; wherein the display comprises N scan lines, wherein the scan start position is one of the scan lines.

IPC Classes  ?

• G09G 3/3266 - Details of drivers for scan electrodes

Abstract

An optical fiber array includes a groove plate having a plurality of grooves disposed on a top surface thereof; and an optical component plate having a plurality of first optical components disposed on a first surface of the optical component plate and a plurality of second optical components disposed on a second surface of the optical component plate, the second surface being opposite the first surface.

IPC Classes  ?

• G02B 6/36 - Mechanical coupling means
• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means

Abstract

A method of performing power saving control on a display device includes: generating, by a timing controller of the display device, a power saving start indication and a power saving end indication in response to changing of a refresh rate of the display device; receiving, by a source driver of the display device, the power saving start indication and the power saving end indication; in response to the power saving start indication, allowing a part of circuitry of the source driver to be powered down during a vertical blanking interval; and in response to the power saving end indication, allowing the powered down part of circuitry of the source driver to be woken up during the vertical blanking interval.

IPC Classes  ?

• G06F 1/26 - Power supply means, e.g. regulation thereof
• G06F 1/3218 - Monitoring of peripheral devices of display devices
• G06F 1/3234 - Power saving characterised by the action undertaken
• G06F 1/3287 - Power saving characterised by the action undertaken by switching off individual functional units in the computer system
• G06F 1/3203 - Power management, i.e. event-based initiation of a power-saving mode

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  ?

• H04N 13/254 - Image signal generators using stereoscopic image cameras in combination with electromagnetic radiation sources for illuminating objects
• 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 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 an image 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 21/00 - Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
• 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 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
• 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 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 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  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• 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  ?

• 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
• H02M 1/00 - Details of apparatus for conversion
• 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

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 5/80 - Geometric correction
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G06T 5/70 - DenoisingSmoothing

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 13/00 - Optical objectives specially designed for the purposes specified below
• 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

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
• G06F 11/00 - Error detectionError correctionMonitoring

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 5/70 - DenoisingSmoothing
• G06T 5/77 - RetouchingInpaintingScratch removal
• 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
• 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