Abstract

A driver circuit including a buffer circuit and at least one charge and discharge circuit is provided. The buffer circuit is coupled to a first resistor string and a digital-to-analog converter via a trace. The buffer circuit is configured to output an input voltage to the first resistor string via the trace. The trace is coupled between the buffer circuit and the digital-to-analog converter. The charge and discharge circuit is coupled to the buffer circuit via the trace. The charge and discharge circuit is configured to charge or discharge the trace according to a first control 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
• 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

An equalizer circuit including a first summing circuit, a second summing circuit, a first sampler circuit, a second sampler circuit, and a multiplexer is provided. The first sampler circuit generates a first sampled signal which is weighted to generate a second feedback signal. The second sampler circuit generates a second sampled signal which is weighted to generate a first feedback signal. The multiplexer generates a polarity indication signal based on one of the first sampled signal and the second sampled signal. The equalizer circuit performs a first calibration operation to compensate for a first offset voltage of the equalizer circuit based on a preset threshold voltage, and performs a second calibration operation to compensate for a second offset voltage of the equalizer circuit based on the weight value used for generating the first feedback signal, the weight value used for generating the second feedback signal, and the polarity indication signal.

IPC Classes  ?

• H04L 25/03 - Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
• H04B 3/04 - Control of transmissionEqualising

Abstract

A driver integrated circuit of a display panel includes: a source driver and a controller. The source driver is coupled to the display panel. The controller is coupled to the source driver and configured to output a plurality of gate clock signals to a gate driver according to a horizontal synchronous signal. The gate driver is coupled to the display panel through a plurality of gate lines. The horizontal synchronous signal includes a plurality of time intervals, and the plurality of time intervals correspond to the plurality of gate lines respectively. A time length of one of the plurality of time intervals is M times a clock period or N times the clock period according to an accumulation error of a corresponding gate line of the plurality of gate lines, in which M and N are positive integers.

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 touch detection device includes a control circuit. The control circuit is configured to: detect whether at least one zone of a touch panel is touched according to a plurality of touch sensing values corresponding to a plurality of touch sensing electrodes of the touch panel; and, to each of the at least one touched zone, determine the touched zone is caused by a finger touch or a liquid touch according a solar energy conversion efficiency value, wherein the solar energy conversion efficiency value represents how much solar energy is converted to electricity.

IPC Classes  ?

• G06F 3/042 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
• H02S 30/10 - Frame structures
• H02S 50/00 - Monitoring or testing of PV systems, e.g. load balancing or fault identification

Abstract

A detection circuit includes an input circuit and a sensing circuit. The input circuit includes a first input node and a second input node. The first input node is coupled to a first detection node and the second input node is coupled to a second detection node. The sensing circuit includes a current source providing a predetermined current. The current source is coupled to the first input node. The sensing circuit generates a sensing voltage at an output node in response to the predetermined current. The first detection node directly contacts the second detection node or is electrically connected to the second detection node through a trace, and the sensing voltage is related to an impedance between the first detection node and the second detection node.

IPC Classes  ?

• G01R 27/20 - Measuring earth resistanceMeasuring contact resistance of earth connections, e.g. plates

Abstract

A noise canceling system comprising multiple signal receiving lines, a touch display chip and multiple noise canceling circuits is provided. The signal receiving lines are configured according to a layout design, and are configured to generate multiple touch signals. The signal receiving lines are classified into multiple line groups according to the layout design. The touch display chip is coupled to a portion of the signal receiving lines and configured to receive the touch signals of the portion and multiple noise canceling signals to generate multiple adjusted touch signals. The noise canceling circuits are coupled to the touch display chip and configured to generate the noise canceling signals to the touch display chip based on the touch signals of the signal receiving lines of the line groups. The number of the noise canceling circuits is greater than or equal to the number of the line groups.

IPC Classes  ?

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

Abstract

A detection circuit for a driving circuit is provided. The detection circuit includes a comparison circuit and a logic circuit. The comparison circuit is coupled to an output pin of the driving circuit. The comparison circuit is configured to receive an output from the output pin, compare the output signal with a first reference signal level to generate a first comparison result, and compare the output signal with a second reference signal level to generate a second comparison result The first reference signal level is different from the second reference signal level. The logic circuit is configured to generate a detection result according to the first comparison result and second comparison result in order to indicate whether a short circuit condition occurs between the output pin and an adjacent output pin of the driving circuit.

IPC Classes  ?

• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
• 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
• H03K 19/21 - EXCLUSIVE-OR circuits, i.e. giving output if input signal exists at only one inputCOINCIDENCE circuits, i.e. giving output only if all input signals are identical

Abstract

An image processing method is proposed. The method includes to receive an I frame and generate a coordinate I-list corresponding to a first detected object in the I-frame and including a first coordinate candidate set having four coordinates, receive a P-frame following the I-frame and generate a coordinate P-list corresponding to a second detected object in the P-frame and including a second coordinate candidate set having four coordinates, generate at least one object region and an initial motion vector thereof of an interpolated frame between the I-frame and the P-frame based on the coordinate I-list and the coordinate P-list, and correct the initial motion vector to generate a corrected motion vector of the at least one object region of the interpolated frame.

IPC Classes  ?

• H04N 19/513 - Processing of motion vectors
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/139 - Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
• H04N 19/172 - 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 an image region, e.g. an object the region being a picture, frame or field
• H04N 19/196 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters

Abstract

A touch device includes a touch panel and a touch control circuit. A method of controlling touch sensitivity of the touch device includes the touch control circuit determining a location of a touch event on the touch panel, the touch control circuit defining a first area on the touch panel based on the location of the touch event, the location of the touch event being in the first area, and the touch control circuit reducing touch sensitivity of a second area on the touch panel outside the first area.

IPC Classes  ?

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

Abstract

A method for a display driver circuit, which has a first non-refresh period and a first refresh period in a first time period and has a second non-refresh period and a second refresh period in a second time period, includes steps of: receiving, by the display driver circuit, a setting data in the second non-refresh period; and performing, by the display driver circuit, an image processing operation by using the setting data. The second non-refresh period is longer than the first non-refresh period.

IPC Classes  ?

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

Abstract

A digital-to-analog converter (DAC) includes at least one multiplexer (MUX), wherein each of the MUX includes a plurality of basic switches and an assistant switch. The plurality of basic switches are coupled between an output terminal of the MUX and a plurality of input terminals of the MUX, and controlled by a plurality of grayscale codes. The assistant switch is coupled to the output terminal of the MUX, and controlled by a control signal different from each of the plurality of grayscale codes.

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
• H03K 19/21 - EXCLUSIVE-OR circuits, i.e. giving output if input signal exists at only one inputCOINCIDENCE circuits, i.e. giving output only if all input signals are identical
• H03M 1/66 - Digital/analogue converters

Abstract

A display driver circuit for controlling a display panel includes a first operational amplifier, a second operational amplifier and a first output switching circuit. The first output switching circuit is coupled to the first operational amplifier and the second operational amplifier. The first output switching circuit couples the first operational amplifier to a first data line of the display panel in a first scan period, to control the first operational amplifier to drive a first subpixel having a first color through the first data line. The first output switching circuit couples the first operational amplifier to a second data line of the display panel in a second scan period, to control the first operational amplifier to drive a second subpixel having the first color through the second data line.

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 ramp generator includes a digital-to-analog converter, a first capacitor, a second capacitor and a noise cancellation circuit. The digital-to-analog converter is configured to generate a ramp-up voltage signal on a first output terminal and a ramp-down voltage signal on a second output terminal. The first capacitor is coupled between the first output terminal and an intermediate node. The second capacitor is coupled between the second output terminal and the intermediate node. The noise cancellation circuit is coupled with the intermediate node. The noise cancellation circuit is configured to provide a compensation feedback according to an intermediate voltage on the intermediate node.

IPC Classes  ?

• H03M 1/06 - Continuously compensating for, or preventing, undesired influence of physical parameters
• H04N 25/616 - Noise processing, e.g. detecting, correcting, reducing or removing noise involving a correlated sampling function, e.g. correlated double sampling [CDS] or triple sampling
• H04N 25/78 - Readout circuits for addressed sensors, e.g. output amplifiers or A/D converters

Abstract

A method and a device for image sticking compensation in an organic light-emitting diode (OLED) display are proposed. The method includes to receive a current frame, compute current offset data corresponding to the current frame based on previous cumulative stress data indicating accumulated stress imposed on the OLED display by one or more previous frames preceding the current frame, and apply the current offset data to the current frame to generate a compensated current frame, where the current offset data includes a first current offset value that is positive and a second current offset value that is negative.

IPC Classes  ?

• 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

The present disclosure provides a display driving IC and a display module comprising the display driving IC. The display driving IC includes: a plurality of metal bumps arranged along a first boundary; and a data processing circuit for receiving multiple display data. The data processing circuit divides the plurality of chip signal channels into multiple groups of chip signal channels, employs an opposite connection state to connect to corresponding groups of panel signal channels, and controls the filling sequence of the display data based on the connection state. Through this design, the present disclosure achieves a slim bezel effect while avoiding the metal layer resource consumption problems associated with traditional lower bump schemes, and simplifies part number management through a standardized bump structure and configuration, thereby improving production efficiency.

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
• H10D 86/40 - Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs

Abstract

A first driver circuit is couplable to at least one second driver circuit. Each of the first driver circuit and the at least one second driver circuit has a first terminal and a second terminal. The first terminal of each of the driver circuits is commonly coupled to a first transmission bus, and the second terminal of each of the driver circuits is commonly coupled to a second transmission bus. The first driver circuit receives a notification from each of the at least one second driver circuit, outputs a confirmation signal through the first terminal after receiving the notification from each of the at least one second driver circuit, and starts a preset operation for sensing with a delay of a compensation time for the first driver circuit after outputting the confirmation signal.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/14 - Digital output to display device

Abstract

A clock and data recovery circuit includes a phase detector and a data sorter. The phase detector includes N samplers and N comparators. The N samplers are used to sample a data signal using N clocks to generate N sampled values. N is an integer greater than 1. A comparator of the N comparators compares a phase of the data signal and a phase of a selected clock of the N clocks. The data sorter is coupled to the phase detector to determine a data order of the N sampled values and disable a subset of the N comparators according to the data order and a promised transition edge.

IPC Classes  ?

• H04L 7/033 - Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal- generating means, e.g. using a phase-locked loop
• H03L 7/08 - Details of the phase-locked loop
• H03L 7/085 - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal

Abstract

A transmitter includes first and second transistors, a capacitor, a resistor, first and second load resistors, and a current source. The first transistor has a gate terminal to receive a first input signal and a first terminal to output a second output signal. The second transistor has a gate terminal to receive a second input signal and a first terminal to output a first output signal. The capacitor and the resistor are coupled between a second terminal of the first transistor and a second terminal of the second transistor. The first load resistor is coupled between the first terminal of the first transistor and a first node. The second load resistor is coupled between the first terminal of the second transistor and the first node. The current source is coupled to the first terminal of the first transistor, the first terminal of the second transistor, and/or the first node.

IPC Classes  ?

• H04B 1/04 - Circuits
• H03K 17/16 - Modifications for eliminating interference voltages or currents

Abstract

A gain amplifier includes a gain stage, a transimpedance amplifier stage and a feedback stage. The gain stage includes two resistors, two PMOS transistors and two NMOS transistors. A first terminal of the first PMOS transistor and a first terminal of the second PMOS transistor are connected to the first resistor. A first terminal of the first NMOS transistor and a first terminal of the second NMOS transistor are connected to the second resistor. A second terminal of the first PMOS transistor is connected to a second terminal of the first NMOS transistor. A gate terminal of the first PMOS transistor is connected to a gate terminal of the first NMOS transistor. A second terminal of the second PMOS transistor is connected to a second terminal of the second NMOS transistor. A gate terminal of the second PMOS transistor is connected to a gate terminal of the second NMOS transistor.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers

Abstract

Disclosed are a display apparatus and its display driving chip and method. A display area of the display panel includes a high refresh rate display area and a low refresh rate display area that are adjacent to each other. In a full refresh frame period, both the high refresh rate display area and the low refresh rate display area are refreshed with data. In a partial refresh frame period, data is refreshed in the high refresh rate display area and data is not refreshed in the low refresh rate display area. The controller controls the gate driver such that a boundary between the high refresh rate display area and the low refresh rate display area in a first partial refresh frame period is different from a boundary between the high refresh rate display area and the low refresh rate display area in a second partial refresh frame period.

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 backlight data mapping circuit is provided. The backlight data mapping circuit includes a memory control circuit, a mapping control circuit and an arrangement circuit. The memory control circuit is configured to sequentially write original duty cycle information corresponding to a plurality of backlight zones of a backlight panel into a first memory unit. The mapping control circuit is configured to convert the original duty cycle information into mapped duty cycle information according to a remapping table and store the mapped duty cycle information into a second memory unit. The remapping table comprises a plurality of location index numbers that indicate respective locations of the first memory unit or the second memory unit. The arrangement circuit is configured to convert the mapped duty cycle information into rearranged duty cycle information matching a backlight driver output format according to backlight-zone-to-driver-output mapping information that defines a plurality of status values.

IPC Classes  ?

• H05B 45/10 - Controlling the intensity of the light
• H05B 45/325 - Pulse-width modulation [PWM]

Abstract

An electronic device including a touch panel and a touch sensing circuit is provided. The touch panel includes a plurality of first signal lines and a plurality of second signal lines. The touch panel is configured to perform a touch sensing operation in a touch sensing phase. The touch sensing phase includes a first sensing period and a second sensing period. The touch sensing circuit is configured to drive the touch panel to perform the touch sensing operation in the touch sensing phase. The touch sensing circuit receives a first touch sensing data from the touch panel in the first sensing period and a second touch sensing data from the touch panel in the second sensing period. The touch sensing circuit determines a position of a touch event on the touch panel according to a comparison result of the first touch sensing data and the second touch sensing data.

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 display panel comprising a display circuit, a conductive circuit, a plurality of sensing circuits and a display driver. The conductive circuit is configured to provide power to the display circuit. The plurality of sensing circuits are arranged at a plurality of positions in the display panel corresponding to the display circuit. The plurality of sensing circuits and the conductive circuit are formed by a same material. The display driver is coupled to the display circuit, the conductive circuit and the plurality of sensing circuits, and is configured to detect a plurality of sensing impedances of the plurality of sensing circuits to generate a plurality of compensation signals. The display driver is configured to control the display circuit according to the plurality of compensation signals.

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

Abstract

A display control circuit for controlling a display panel includes a timing generation circuit and a timing control circuit. The display panel is operating with a timing having a plurality of frame times, each of which having an active period and a blanking period. The timing generation circuit is configured to generate a reset control signal. The timing control circuit is configured to set a plurality of reset pulses having a reset cycle on the reset control signal in each of the frame times. The reset control signal is used for generating a plurality of reset signals to be output to the display panel. A total length of at least one of the plurality of frame times divided by the reset cycle is substantially equal to a first positive integer, and a length of the active period divided by the reset cycle is substantially equal to a second positive integer.

IPC Classes  ?

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

Abstract

Provided are a display system, a control circuit, and a backlight control method. The control circuit includes a dimming control circuit. The dimming control circuit generates backlight control data to control a brightness level of a backlight unit of a backlight panel of the display system. The brightness level of the backlight unit is increased or is made to blink based on the backlight control data in response to a touch position of a touch event occurring on a touch display panel of the display system being in a range of the backlight unit or in a range of a backlight group which the backlight unit belongs to.

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
• B60K 35/10 - Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
• B60K 35/28 - Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics informationOutput arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the purpose of the output information, e.g. for attracting the attention of the driver
• B60K 35/29 - Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
• G06F 3/04817 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance using icons
• 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

Abstract

A display control circuit and a display control method are provided. The display control circuit includes a storage unit, a control register, a local dimming control register, and a microcontroller unit. The storage unit is configured to store a plurality of predefined LDC setting data. The control register is configured to store a first mode setting value. The local dimming control register is configured to store a LDC setting data that is to be applied in synchronization with a frame synchronization signal. The microcontroller unit is coupled to the control register and the local dimming control register. The microcontroller unit is configured to read a first predefined LDC setting data of the plurality of predefined LDC setting data stored in the storage unit according to the first mode setting value and write the first predefined LDC setting data into the local dimming control register.

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 3/34 - 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

Abstract

An operational amplifier includes an input stage, a first switch, a second switch and a third switch. The input stage includes a current source and a first differential input pair. The first differential input pair includes a first input transistor and a second input transistor. The first input transistor has a gate terminal. The second input transistor has a gate terminal coupled to an output terminal of the operational amplifier. The first switch is coupled between an input terminal of the operational amplifier and the gate terminal of the first input transistor. The second switch is coupled between the gate terminal of the first input transistor and the gate terminal of the second input transistor. The third switch is coupled to the current source and deployed on a current path of the first differential input pair.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers

Abstract

A regulating rectifier and an operation method thereof are provided. A regulating rectifier includes an output switch circuit, an energy storage switch circuit, an energy storage capacitor, and a crossbar switch circuit. In a charging mode, the output switch circuit and the crossbar switch circuit form a rectifier circuit together to convert wireless power received by a wireless charging induction coil into output power. In a current boosting mode, the output switch circuit, the energy storage switch circuit, and the crossbar switch circuit perform an iterative operation (including a direct current-direct current (DC-DC) conversion and an alternating current-direct current (AC-DC) conversion) together. The DC-DC conversion uses energy of the energy storage capacitor to perform current boosting on the wireless charging induction coil. The AC-DC conversion converts the wireless power of the wireless charging induction coil into the output power.

IPC Classes  ?

• H02M 7/217 - Conversion of AC power input into DC 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
• H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
• H02J 50/10 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling

Abstract

A driver of a light emitting diode (LED) and a light emitting device are provided. The driver includes a first receiver, a second receiver, a data controller, a transmitter, and a check controller. The first receiver receives a parallel data signal. The second receiver receives a serial data signal. The data controller obtains the parallel data signal through the first receiver and transmits the parallel data signal to a serial data output terminal through the transmitter for transmitting the parallel data signal to a next-stage driver. The check controller detects whether the parallel data signal is received through the first receiver and the serial data signal is received through the second receiver and generates a driving signal of the LED according to the received parallel data signal and the received serial data signal to illuminate the LED.

IPC Classes  ?

• H05B 47/17 - Operational modes, e.g. switching from manual to automatic mode or prohibiting specific operations
• H05B 45/30 - Driver circuits

Abstract

The disclosure provides an artificial intelligence (AI) device, a neural network processing unit (NPU), and an operation method. The AI device includes a host circuit, a memory, and the NPU. The NPU is coupled to the host circuit and the memory. The NPU establishes a transmission connection to the host circuit. A model weight set of an AI model includes a first weight subset and a second weight subset. During an initialization period before the NPU executes the AI model, the host circuit preloads the first weight subset into the memory. During an execution period when the NPU executes the AI model, the NPU receives the first weight subset from the memory and the second weight subset from the host circuit for executing the AI model.

IPC Classes  ?

• G06N 3/063 - Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using electronic means
• G06F 12/0875 - Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches with dedicated cache, e.g. instruction or stack

Abstract

A display device includes a display panel and a control circuit. The display panel includes a plurality of pixel driving circuits. Each pixel driving circuit includes a light emitting element and a switching element. The switching element controls a driving current flowing through the light emitting element. The control circuit is coupled to the display panel. The control circuit provides a control signal for controlling the switching element. The control signal includes multiple pulses during each frame period. The control circuit adjusts a width ratio of a first level and a second level of the pulses according to at least one of the refresh rate and the brightness of the display panel.

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

Abstract

Provided is an image processing method adapted to adjust a contrast and a brightness of an image. The image processing method includes: an image data of the image is extracted; the brightness of the image is adjusted based on the extracted image data; and the contrast of the image is adjusted based on the adjusted brightness of the image.

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
• G06T 5/40 - Image enhancement or restoration using histogram techniques
• G06T 5/73 - DeblurringSharpening
• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
• G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands

Abstract

A source driver circuit to drive a panel device includes a driving circuit corresponding to a channel. The driving circuit includes multiple pixel circuits coupled to multiple data lines, an operational amplifier and multiple switches. The operational amplifier outputs multiple data voltages in a data-output period to sequentially charge the data lines. The switches are sequentially closed in the data-output period in response to a multiplexing control signal to electrically connect the operational amplifier and a corresponding pixel circuit. The operational amplifier is controlled to operate in a first power mode in the data-output period and operate in a second power mode in a non-data-output period. A slew rate of the first power mode is higher than a slew rate of the second power mode, and the non-data-output period covers a remaining period of a display period of the channel with the data-output period being excluded.

IPC Classes  ?

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

Abstract

An embodiment of the invention provides a display apparatus including a light source module and a processing circuit. The light source module includes a plurality of normal light-emitting diode (LED) units and a target LED unit. The processing circuit is coupled to the light source module. The processing circuit is configured to select at least one normal LED unit, and adjust at least one of a duty cycle and a current value of a pulse width modulation signal for driving the at least one normal LED unit to compensate the target LED unit. The at least one normal LED unit is adjacent to the target LED unit.

IPC Classes  ?

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

Abstract

A method for use by a touch device to operate a touch panel includes allocating a first area of the touch panel to a touch control circuit, and performing a 2-dimensional scan on the first area. The method further includes allocating a second area of the touch panel to the touch control circuit, and applying a scan method or scan rate to the second area different from the first area.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 1/3234 - Power saving characterised by the action undertaken
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Abstract

A signal converter includes a first capacitor, a second capacitor, a first switch to a fourth switch, and a first feedback control circuit to a fourth feedback control circuit. The first switch and the second switch are coupled between a reference voltage end and an output end in series. The first switch and the second switch are respectively controlled by a first feedback control signal and a second feedback control signal. The third switch and a fourth switch are respectively controlled by a third feedback control signal and a fourth feedback control signal. The first feedback control circuit provides the first feedback control signal. The second feedback control circuit provides the second feedback control signal. The third feedback control circuit provides the third feedback control signal. The fourth feedback control circuit provides the fourth feedback control signal.

IPC Classes  ?

• H02M 7/217 - Conversion of AC power input into DC 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
• H03K 17/16 - Modifications for eliminating interference voltages or currents

Abstract

A machine learning method using pooling on channel attention includes inputting a first residual input to convolution layers of a first residual network to generate a first convolved output, and inputting the first convolved output to a first pooling layer to generate a first pooling vector. This results in a decrease in both computational time and memory usage, which in turn boosts the efficiency and performance of the machine learning model.

IPC Classes  ?

• G06F 3/08 - Digital input from, or digital output to, record carriers from or to individual record carriers, e.g. punched card
• G06N 3/0464 - Convolutional networks [CNN, ConvNet]

Abstract

A universal serial bus (USB) device, coupled to a USB host, includes a transceiver, receiving a data signal having a first frequency from the USB host, wherein the data signal comprises a plurality of specific packets with a periodic characteristic; a packet detector, coupled to the transceiver, receiving the data signal through the transceiver, configured to generate a reference signal according to the periodic characteristic of the plurality of specific packets; and a frequency-locked loop (FLL) circuit, coupled to the transceiver and the packet detector, configured to generate a clock signal having a second frequency according to the reference signal; wherein the first frequency is substantially equal to the second frequency. In other words, the second frequency is adjusted to approach the first frequency, and a frequency difference between the first frequency and the second frequency is smaller than 500 ppm.

IPC Classes  ?

• G06F 13/42 - Bus transfer protocol, e.g. handshakeSynchronisation
• G06F 13/38 - Information transfer, e.g. on bus

Abstract

A computer device, an edge device, and a method for an artificial intelligence (AI) inference on a video stream are proposed. The computing device at least includes a first processor and a second processor. The first processor is configured to continuously receive a main video stream. The second processor is configured to perform scaling on the main video stream to generate a scaled video stream and to perform AI inference on a first frame of the scaled video stream to generate an AI inference result for a second frame of the main video stream, where the second frame of the main video stream is a frame corresponding to a time point when or after the AI inference result is generated.

IPC Classes  ?

• G06T 5/50 - Image enhancement or restoration using two or more images, e.g. averaging or subtraction
• G06T 3/40 - Scaling of whole images or parts thereof, e.g. expanding or contracting

Abstract

A control circuit for a feed-forward equalizer (FFE) includes an FFE controller and an impedance control loop. The FFE has a plurality of tap drivers commonly coupled to an output terminal. The FFE controller, which receives a basic current from a current generator, includes a current digital-to-analog converter (DAC) and a current mirror. The current DAC generates a reference current according to the basic current. The current mirror mirrors the reference current to generate at least one first reference voltage, and outputs the at least one first reference voltage to at least one first tap driver among the plurality of tap drivers. The impedance control loop, coupled to the FFE controller, generates a second reference voltage according to the at least one first reference voltage, and outputs the second reference voltage to at least one second tap driver among the plurality of tap drivers.

IPC Classes  ?

• H04L 25/03 - Shaping networks in transmitter or receiver, e.g. adaptive shaping networks

Abstract

A driving device is provided. The driving device includes a driver and a timing controller (TCON). The driver is coupled to a pixel circuit and a backlight circuit of a display panel. The TCON is coupled to the driver. In a frame cycle, after a delayed interval, the TCON outputs output image data to the driver, such that the driver drives the pixel circuit and the backlight circuit according to the output image data and backlight image data at the same time. Alternatively, when the driver drives the pixel circuit, after an interval based on dummy data of the backlight image data, the driver drives the backlight circuit according to available data of the backlight image data.

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 3/34 - 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

Abstract

A sense amplifier circuit including a sense amplifier and a control circuit is provided. The sense amplifier is configured to detect input data. The control circuit is coupled to the sense amplifier. The control circuit outputs a control signal to control the sense amplifier to detect the input data. The control circuit controls whether the sense amplifier performs a pre-charge operation or a pre-discharge operation based on the input data of a previous cycle and a current cycle.

IPC Classes  ?

• G11C 7/08 - Control thereof
• G11C 11/4091 - Sense or sense/refresh amplifiers, or associated sense circuitry, e.g. for coupled bit-line precharging, equalising or isolating

Abstract

A touch controller is used to control a touch panel. The touch panel has an array of sensor cells divided in to N columns, each column has M regions, M regions are grouped into P zones. The touch controller has a switch circuit and a sensing circuit. In a coarse scan period, the switch circuit shorts the sensor cells in each zone of each column, and the sensing circuits scans P×N zones of the N columns to generate P×N zone signals. In M fine scan periods, the switch circuit decouples the sensor cells in a triggered zone of the P×N zones, and the sensing circuit scans a region of the triggered zone without scanning untriggered zones of the P×N zones to generated cell signals.

IPC Classes  ?

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

Abstract

Methods and computer systems for handling multi-processes and multi-threads are proposed. The method for handling multi-processes is applicable to a computer system to control a graphic processor to handle tasks of a process sent from a client terminal by a child process technique or based on a process ID. The method for handling multi-threads is applicable to a computer system to control a graphic processor to handle tasks of a thread sent from a client terminal based on a thread ID.

IPC Classes  ?

• G06F 9/54 - Interprogram communication

Abstract

A control method for reducing operating temperature of a driving device is provided. The driving device includes a plurality of channel driving circuits. The control method includes enabling an over-temperature sensing function to determine whether to perform a temperature reducing operation, and for each line period, determining that the plurality of channel driving circuits perform an overdriving operation or a charge sharing operation during the line period by comparing a gray level of channel data of a channel in the line period with a gray level of channel data of the channel in a previous line period before the line period in response to determining to perform the temperature reducing operation.

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
• 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 display driver chip for a flexible display includes a display control circuit and a crease compensation circuit. The display control circuit is coupled to a display panel of the flexible display and configured to provide a driving signal to a corresponding pixel of the display panel. The crease compensation circuit is coupled to the display control circuit and configured to execute a color deviation compensation method. The color deviation compensation method includes obtaining a folding angle of a folding portion of the flexible display; determining a color deviation compensation value for a sub-pixel of the pixel according to the folding angle; and adjusting a sub-pixel value of the sub-pixel according to the color deviation compensation value.

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

Abstract

A touch sensing system including a touch sensing apparatus and a stylus is provided. The touch sensing apparatus includes a driver circuit and a touch sensing panel. The driver circuit drives the touch sensor panel to output an uplink signal. The stylus outputs a downlink signal to the touch sensor panel according to the uplink signal. The driver circuit adjusts a frequency of the uplink signal according to an operation mode of the touch sensing apparatus.

IPC Classes  ?

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

Abstract

A timing controller and an operation method of the timing controller are provided. The timing controller includes a timing signal generation part and a frame signal generation part. The timing signal generation part generates a clock signal to a source driver for driving a display panel. The frame signal generation part generates a frame signal synchronized with the clock signal. The timing controller transmits a first differential signal pair and a second differential signal pair of the frame signal to the source driver via different transmission paths. The timing controller adjusts the phase of at least one of the first differential signal pair and the second differential signal pair so that the clock signal has different timing skews for different differential signal pairs, in order to adapt to different transmission path delays of the different transmission paths.

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 adaptive multi-area frame rate display system and a method employed are provided. The method includes: dividing a display panel into a plurality of display areas and setting a plurality of compensation parameter sets corresponding to a plurality of frame rates; receiving display stream data; controlling the plurality of display areas of the display panel to display an image corresponding to the display stream data; performing a multi-area frame rate calculation operation to obtain a frame rate of each of the plurality of display areas; and, for each of the display areas, applying the compensation parameter set to which the frame rate of each of the display areas corresponds, so as to compensate an image subsequently displayed in each of the display areas.

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 driving circuit and operation method for reducing power consumption of the driving circuit are provided. The proposed driving circuit is operable to drive a display panel and comprises at least one operational amplifier. An input voltage of the operational amplifier is examined and determined such that a first operation voltage and a second operation voltage of the operational amplifier can be provided. Since the first and second operation voltages of the operational amplifier are adjustable and can be decided associated with its input voltage, the operational amplifier is able to operate in an adaptive voltage range between the first and second operation voltages. As a result, power consumption reduction of the driving circuit can be achieved. As such, it is believed that the present invention is significantly effective in realizing power efficiency optimization result of a driving circuit when it is applied to drive a display panel 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
• H03F 1/02 - Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
• H03F 3/45 - Differential amplifiers

Abstract

The invention provides a level shifter disposed in a die. The level shifter includes a pull-up transistor, a first pull-down transistor, a second pull-down transistor, and a control circuit. A first terminal of the pull-up transistor receives a first power voltage higher than a substrate voltage of the die. A first terminal of the first pull-down transistor receives a second power voltage lower than the substrate voltage. The second pull-down transistor is coupled between the first pull-down transistor and the pull-up transistor. A second terminal of the pull-up transistor is coupled to an output terminal of the level shifter. An input terminal of the control circuit is coupled to an input terminal of the level shifter. Different output terminals of the control circuit are respectively coupled to control terminals of the pull-up transistor, the second pull-down transistor, and the first pull-down transistor.

IPC Classes  ?

• H03K 19/0185 - Coupling arrangementsInterface arrangements using field-effect transistors only

Abstract

A display driver and an operating method thereof, and a display panel are disclosed. The operating method includes the following steps. The display panel includes a plurality of pixel circuits arranged in an array. By the display driver, an initial voltage with a reference value is provided to the plurality of pixel circuits during at least one active frame. By the display driver, the initial voltage with a plurality of different voltage values is provided to the plurality of pixel circuits during at least one skip frame. The plurality of different voltage values of the initial voltage respectively correspond to a plurality of distances between the plurality of display lines and the display driver.

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 image processing method for a video processor to generate an interpolated frame includes steps of: receiving a touch information from a host processor or a display driver circuit; finding at least one motion vector (MV) by performing motion estimation according to the touch information; and constructing the interpolated frame by using the at least one MV.

IPC Classes  ?

• H04N 7/01 - Conversion of standards
• G06T 7/20 - Analysis of motion
• H04N 5/14 - Picture signal circuitry for video frequency region

Abstract

A driving circuit and an operating method thereof and a controlling circuit which are suitable for a knob apparatus are provided. The driving circuit includes multiple touch-sensing electrodes and a controlling circuit. The knob apparatus includes a knob and a touch panel. The knob is disposed on the touch panel. The touch-sensing electrodes and the controlling circuit are disposed in the touch panel. The touch-sensing electrodes are coupled to multiple pixel switches of the touch panel. The controlling circuit is coupled to the touch-sensing electrodes. During a touch period, the controlling circuit provides an offset voltage to a first touch-sensing electrode of the touch-sensing electrodes, such that a first pixel switch coupled to the first touch-sensing electrode maintains being turned off according to a touch-controlling signal and the offset voltage.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/0338 - Pointing devices displaced or positioned by the userAccessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
• G06F 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• 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

The disclosure provides a display device and a display driving chip and a display driving method thereof. The display panel includes a high refresh rate display area and a low refresh rate display area. The display driving chip generates a gate clock signal. The gate clock signal is utilized by the gate driver to generate first scan signals for driving the high refresh rate display area and second scan signals for driving the low refresh rate display area. Both the high refresh rate display area and the low refresh rate display area are refreshed during a full refresh frame period. Only the high refresh rate display area is refreshed during a partial refresh frame period. The gate clock signal has different active periods or different swings in different parts of the full refresh frame period (corresponding to different refresh rate display areas).

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 method for a display driver circuit includes steps of: receiving an input frame having a plurality of slices from a host processor; detecting the earliest horizontal synchronization start packet in the plurality of slices, wherein the earliest horizontal synchronization start packet indicates a start of the earliest slice of a full refresh display area of an output frame; and updating the full refresh display area of the output frame in response to that the earliest horizontal synchronization start packet of the earliest slice of the full refresh display area is detected.

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

The disclosure provides a video wall and a video box controller thereof. The video wall includes multiple display daisy chains and a source image compressor. The source image compressor divides and compresses a source image into multiple compressed divided images. The display daisy chains are coupled to the source image compressor through different cables to receive different compressed divided images. Each of the display daisy chains includes multiple video boxes connected in series. Each of the video boxes includes a LED (light emitting diode) display module and a video box controller. The video box controller decompresses a received compressed divided image, and displays a corresponding divided image through the LED display module.

IPC Classes  ?

• G06F 3/14 - Digital output to display device
• G06T 7/11 - Region-based segmentation

Abstract

Disclosed are a bootstrap control circuit and a voltage converting device. The bootstrap control circuit includes a current mirror, a diode string, a switch, a control voltage generator and a first transistor. The current mirror, based on an input voltage, mirrors a bias current to generate a mirror current. The diode string is coupled between the current mirror and a reference voltage end. The switch has a first end coupled to the diode string, a control end of the switch receives a first control voltage, a second end of the switch provides a second control voltage. The first transistor, based on the input voltage, generates an output voltage according to the second control voltage.

IPC Classes  ?

• H02M 3/156 - 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

Abstract

A knob is disposed on a touch panel including a first touch sensor, a second touch sensor and a third touch sensor. The knob includes a bottom surface and a first connector. The bottom surface includes a sensing electrode aligned with the first touch sensor, a first common electrode aligned with the second touch sensor and receiving a first reference voltage from the second touch sensor, and a second common electrode aligned with the third touch sensor and receiving a second reference voltage from the third touch sensor. The first connector controls the sensing electrode to be conducted with the first common electrode and the second common electrode or not when the knob rotates. A touch sensing circuit of the touch panel determines a rotation direction of the knob according to a signal variation of the first touch sensor.

IPC Classes  ?

• G06F 3/0362 - Pointing devices displaced or positioned by the userAccessories therefor with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts
• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
• 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 panel device includes a first touch senor pad and a second touch sensor pad configured in a first region, a third touch senor pad and a fourth touch sensor pad configured in a second region, a plurality of traces, a first receiving circuit and a second receiving circuit. The first receiving circuit and the second receiving circuit respectively receives a first sensing signal generated on the first touch sensor pad and a second sensing signal generated on the second touch sensor pad in a first sensing period, and respectively receives a third sensing signal generated on the third touch sensor pad and a fourth sensing signal generated on the fourth touch sensor pad in a second sensing period. The first region and the second region are comprised in a display area of the panel device.

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 control method includes following operations: outputting a first control signal to a first switch coupled to a first sub-pixel of a display panel; outputting a second control signal to a second switch coupled to a second sub-pixel of the display panel; and outputting a driving voltage of display data according to a data output enable signal. The data output enable signal has a plurality of pulses, and a first time interval between a first pulse of the plurality of pulses and a second pulse of the plurality of pulses is shorter than a second time interval between the second pulse of the plurality of pulses and a third pulse of the plurality of pulses.

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

The disclosure provides a touch driving device and an operating method thereof. The touch driving device uses a transmitting matrix to drive multiple transmitting electrodes of a touch panel. The touch driving device includes a first driving circuit and a second driving circuit. During a same period, the first driving circuit uses a first transmitting sub-matrix of the transmitting matrix to drive a first transmitting electrode group of the transmitting electrodes, and the second driving circuit uses a second transmitting sub-matrix of the transmitting matrix to drive a second transmitting electrode group of the transmitting electrodes. The touch driving device reads a sensing result matrix corresponding to the transmitting matrix from multiple receiving electrodes of the touch panel.

IPC Classes  ?

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

Abstract

An image processing method for a video processor includes receiving a first input frame at a first time instant, receiving a second input frame at a second time instant, and creating an interpolated frame. When no input frame is received at a third time instant, the interpolated frame is generated using extrapolation according to the first and second input frames. When a third input frame is received at the third time instant, the interpolated frame is generated using interpolation according to the second and third input frames. The video playback smoothness can be improved by dynamically switching between extrapolation and interpolation.

IPC Classes  ?

• H04N 7/01 - Conversion of standards
• G06T 1/20 - Processor architecturesProcessor configuration, e.g. pipelining
• G11B 27/34 - Indicating arrangements

Abstract

The disclosure provides a display apparatus, a display driving device, and an operating method thereof. The display apparatus includes a display panel, a touch driving device, and the display driving device. The touch driving device drives the display panel to detect touch events. The display driving device generates multiple gate clocks to a gate line circuit of the display panel. The display driving device generates the gate clocks in a first scanning sub-period of a same frame period with a charge sharing function disabled. The display driving device generates the gate clocks in a second scanning sub-period of the same frame period with the charge sharing function enabled.

IPC Classes  ?

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

Abstract

An image processing method includes performing an exposure in a sensing region of an image sensor by using multiple different exposure times to generate image data with multiple exposure times; calculating multiple average luminance values according to the image data with multiple exposure times; and determining an optimal exposure time according to the multiple average luminance values. The sensing region is divided into multiple sub-regions along a vertical direction and two adjacent sub-regions correspond to different exposure times. Each average luminance value corresponds to one of the multiple different exposure times.

IPC Classes  ?

• H04N 23/73 - Circuitry for compensating brightness variation in the scene by influencing the exposure time
• H04N 23/71 - Circuitry for evaluating the brightness variation

Abstract

A touch controller including an analog front-end circuit, an analog-to-digital converter circuit, a first demodulator circuit, a second demodulator circuit, and a processor circuit. The analog front-end circuit receives a touch sensing signal from a touch display panel. The touch sensing signal includes a first coded signal corresponding to a first user. The analog-to-digital converter circuit converts the touch sensing signal into a digital signal. The first demodulator circuit and the second demodulator circuit respectively demodulate the digital signal to obtain a first touch raw data corresponding to the first user and a second touch raw data corresponding to a second user. The processor circuit generates a first report data and a second report data according to the first touch raw data and the second touch raw data respectively. The processor circuit identifies whether a current touch behavior is that of the first user according to the first coded signal.

IPC Classes  ?

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

Abstract

A touch control method configured to control a touch sensing operation of a touch apparatus is provided. The touch apparatus has a plurality of sensors. The touch control method includes: obtaining a first sensing value of a touched sensor and a plurality of sensing values of sensors neighbored with the touched sensor; determining a touch position of the touch object inside the touched sensor according to the first sensing value; normalizing the first sensing value to a second sensing value according to the touch position inside the touched sensor; and performing a touch reporting process according to the second sensing value.

IPC Classes  ?

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

Abstract

A touch display integrated circuit (IC) and an operating method thereof, and a touch display device are disclosed. The touch display IC includes a scanning circuit and a processing circuit. The scanning circuit is coupled to multiple touch pads of the touch display panel. The scanning circuit is configured to set an initial area, and to generate multiple scanned touch areas by sequentially shifting the initial area with a pre-setting distance. The scanning circuit is configured to obtain multiple touch sensing signals according to the scanned touch areas to generate touch data. A size of the initial area equals to N of the touch pads. The processing circuit is coupled to the scanning circuit. The processing circuit is configured to calculate touch control information corresponding to each of the scanned touch areas according to the touch data.

IPC Classes  ?

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

Abstract

Provided are a driver circuit, a display device and a driving method of a display panel thereof. The display device includes a source driver, a display panel, and a multiplexer. A common terminal of the multiplexer is coupled to an output terminal of a source driver channel of the source driver. The multiplexer includes a plurality of selection terminals, each coupled to a corresponding one of a plurality of data lines of the display panel. Each of the data lines has a corresponding color attribute. The color attributes of at least two of the data lines coupled to the multiplexer are a first color. The multiplexer selects each of the selection terminals once in a unit period. The multiplexer continuously selects the data lines with the same color attribute as the first color in the unit 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

Abstract

The disclosure describes a display control circuit for detecting noise interference and a control method thereof. The display control circuit includes a display driver and a timing controller. The timing controller is coupled to the display driver. In the control method, the display driver sets an asynchronization signal which indicates that the timing controller is desynchronized from the display driver. The display driver performs a noise interference mode when the display driver or the timing controller determines that the time duration of the asynchronization signal is less than a given time duration. The display driver performs a crash reset mode after the noise interference mode is performed when the display driver or the timing controller determines that the time duration of the asynchronization signal is equal to or greater than the given time duration.

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

Provided are a display device, a display control circuit, and an image processing method. The display device includes an OLED display panel and a display control circuit. The display control circuit adjusts data of a surrounding area of an input frame to generate an output frame. The OLED display panel displays the output frame which includes a main area and the surrounding area having a less luminance than the main area has. The main area is the area where the human eye is focused. The main area is set to normal luminance to maintain visual effects. The luminance of the surrounding area is lowered to save energy.

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 3/3208 - 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

Testing circuits and testing method are provided. The testing circuit includes a first pad, a second pad, a first test signal generator, a second test signal generator, a switch circuit, and a test signal receiver. The first and second pads are to be respectively coupled across the conductive ring structure. The first test signal generator is coupled to the first pad and configured to provide a first test signal to the first pad. The second test signal generator is coupled to the second pad and configured to provide a second test signal to the second pad. The switch circuit is configured to control the first test signal generator and the second test signal generator to provide the first and second test signals respectively in a first and second modes. The test signal receiver is configured to generate a test result according to a voltage signal received from the first pad.

IPC Classes  ?

• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer

Abstract

A scan circuit applicable to driving a plurality of light-emitting-diodes of a plurality of scan lines of a display panel is provided. A plurality of switching components are configured, having each switching component connected with one of the scan lines. A plurality of power transistors are disposed corresponding to the scan lines, having each power transistor connected between one scan line and a ground terminal. A low-dropout regulator circuit or a global operational amplifier is alternatively connected to the plurality of switching components in common for selectively generating an output voltage to at least one of the scan lines and avoiding ghost imaging on the display panel. By employing the proposed scan circuit, the invention is effective in achieving de-ghost functioning and avoiding conventional signal coupling issues on the display panel. In addition, redundant power waste consumption can be significantly reduced at the same time.

IPC Classes  ?

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

Abstract

An image processing method and an image processing device are proposed. The method includes to receive an input image including multiple patches in RGB color space, compute a difference of pixel values among a first pixel and neighboring pixels thereof in a first patch among the patches with respect to each of RGB channels, determine a first color channel among the RGB channels having a maximum difference of the pixel values for the first patch, process the first patch according to the maximum difference of the pixel values for the first patch in the first color channel to generate a processed first patch, and generate an output image including the processed first patch.

IPC Classes  ?

• H04N 1/60 - Colour correction or control
• G06V 10/56 - Extraction of image or video features relating to colour
• G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
• G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries

Abstract

A driving system includes a plurality of driver circuits connected in series, wherein each of the driver circuits is connected to one or two adjacent driver circuits through a master terminal and a slave terminal. The driver circuits include a plurality of slave driver circuits and a master driver circuit. Each of the slave driver circuits outputs a notification. The master driver circuit receives the notification from the slave driver circuits, outputs a confirmation signal through the master terminal after receiving the notification from the slave driver circuits, and starts a sensing operation with a delay of a compensation time for the master driver circuit after outputting the confirmation signal. The slave driver circuits further receive the confirmation signal through the master terminal, and start the sensing operation with a delay of a compensation time for the respective slave driver circuit after receiving the confirmation signal.

IPC Classes  ?

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

Abstract

A method for generating overdriving voltage based on temperature of panel is disclosed. The method includes the following steps. A built-in temperature detector of a controller senses temperature of the panel to generate a sensing temperature value. Alternatively, the controller calculates a sensing temperature value, according to lookup information and raw data. The raw data is obtained according to touch sensing signals output from multiple touch sensors. Then, the controller generates an overdriving voltage, according to the sensing temperature value and another lookup information. The controller outputs the overdriving voltage to the pixel circuit.

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

Voltage regulating devices for organic light emitting diodes (OLED) are provided. The voltage regulating device includes an operational amplifier and a voltage output circuit. The operational amplifier generates an output voltage. The voltage output circuit is coupled to the operational amplifier. The voltage output circuit is controlled by a selection signal to generate a control voltage selectively using a first operating voltage interval or a second operating voltage interval. A voltage value of the control voltage is related to a reference voltage of the OLED, and the selection signal is correspondingly generated according to the reference voltage of the OLED.

IPC Classes  ?

• H05B 45/3725 - Switched mode power supply [SMPS]

Abstract

A semiconductor chip including a plurality of first pads, a plurality of second pads, a plurality of first bumps, and a plurality of second bumps is provided. The first pads and the second pads are arranged along a direction of a long side of an active surface of the semiconductor chip. The first bumps are disposed on the first pads, and configured for a chip probe test. The second bumps are disposed on the second pads, and not for the chip probe test. A size of the first bump is larger than a size of the second bump.

IPC Classes  ?

• H01L 21/66 - Testing or measuring during manufacture or treatment
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
• H01L 23/00 - Details of semiconductor or other solid state devices

Abstract

Voltage converter of the disclosure automatically and dynamically adjusts the on-time of the driving signal for driving the switch circuit, so that the charging and discharging period of an inductor is optimized. The voltage converter includes a pulse skipping modulation (PSM) control circuit, a duty generator, a switch driving circuit, and a switching circuit. The PSM control circuit is configured to generate a skip signal based on the driving signal and the clock signal, so as to dynamically and automatically adjust the on-time of the driving signal.

IPC Classes  ?

• H02M 1/14 - Arrangements for reducing ripples from DC input or output
• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• 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

Abstract

The disclosure provides a processor and a pixel degradation compensation method thereof. The processor includes a processing circuit and a pixel degradation compensation circuit. The pixel degradation compensation circuit is coupled to the processing circuit to receive image frame data. The pixel degradation compensation circuit adjusts the grayscales of all sub-pixel data of the image frame data based on a grayscale adjustment rate corresponding to the image frame data to generate adjusted image frame data. The pixel degradation compensation circuit generates a total degradation value corresponding to current sub-pixel data in the adjusted image frame data based on the current sub-pixel data. The pixel degradation compensation circuit compensates the current sub-pixel data based on the total degradation value corresponding to the current sub-pixel data to generate compensated current sub-pixel data in compensated image frame data to a display module.

IPC Classes  ?

• G09G 3/3225 - 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

Abstract

A sensing device includes a touch panel and a control circuit coupled to the touch panel. The touch panel includes touch sensors arranged in a matrix of x columns and y rows, and is used to generate touch data upon being scanned. The control circuit is used to scan the touch panel and differentiate between a normal touch event and a hover touch event according to the touch data.

IPC Classes  ?

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

Abstract

A light-emitting-diode driver structure is provided, including a first and second LED driving group each having multiple LED driving circuits connected in series, a first and second common data line configured to receive a first and second data input signal, respectively. The first common data line is connected to respective data input terminals of each driving circuit in the first LED driving group. The second common data line receives a second data input signal which is a data output signal of a last stage of the first LED driving group, and connected to respective data input terminals of each LED driving circuit in the second LED driving group. The first and second data input signal comprise RGB display data for generating output signals on red, green and blue output data transmission lines. And therefore, the Application is effective in reducing redundant power waste and circuit layout area.

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
• 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 3/34 - 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 3/36 - 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 knob device including a first layer and a second layer is provided. The first layer is disposed on a touch panel. The first layer includes a plurality of first conductive pads with interconnectors. The second layer is disposed on the first layer. The second layer includes a first conductive part. The first conductive part and the first conductive pads with the interconnects are connectable to provide a plurality of press states in response to a press operation.

IPC Classes  ?

• G06F 3/0362 - Pointing devices displaced or positioned by the userAccessories therefor with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts
• G06F 3/039 - Accessories therefor, e.g. mouse pads
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Abstract

A timing controller and an operation method of the timing controller are provided. The timing controller includes a timing signal generation part and a frame signal generation part. The timing signal generation part generates a clock signal to a plurality of source drivers for driving a display panel. The frame signal generation part generates a frame signal synchronized with the clock signal. The frame signal includes a plurality of data segments corresponding to different source drivers. The timing controller adjusts a phase of at least one of the clock signal and the frame signal, so that the clock signal has different timing skews for different data segments and is adapted to different transmission path delays between the timing controller and 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

Abstract

A source driver includes a digital-to-analog converter (DAC), comprising: a m-bit sub-DAC, configured to receive a plurality of first data codes within a plurality of data codes and generate a set of first intermediate voltages according to the plurality of first data codes; and a k-bit sub-DAC, configured to receive a plurality of second data codes within the plurality of data codes and generate a set of second intermediate voltages according to the plurality of second data codes; and an operational amplifier, configured to output a data voltage according to the set of first intermediate voltages or the set of second intermediate voltages; wherein m and k are positive integers.

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 driver device configured to drive a display panel to display images is provided. The driver device includes a storage circuit, a processor circuit, and a source driving circuit. The storage circuit stores image processing parameters. The processor circuit receives an input frame data and a selecting signal indicating a first subpixel rendering (SPR) format that the input frame data is in. The processor circuit processes the input frame data according to a part of the image processing parameters which is selected according to the selecting signal, to generate the output frame data. The source driving circuit receives a first frame data in a subpixel arrangement format from the processor circuit, and generates data voltages according to the first frame data to drive subpixels of the display panel. The subpixels of the display panel are arranged in the subpixel arrangement format.

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 low voltage differential signaling receiver includes a resistor load pair, an input stage, a current mode logic stage and a comparator circuit. The input stage includes a P-type transistor pair and a N-type transistor pair. The P-type transistor pair and the N-type transistor pair are configured to generate first differential output voltages on the resistor load pair according to differential input signals. The current mode logic stage is configured to enhance a gain of the first differential output voltages into second differential output voltages. The latch circuit is configured to generate third differential output voltages according to the second differential output voltages and latch the third differential output voltages. The comparator circuit is configured to compare the third differential output voltages and generate a single-ended output signal.

IPC Classes  ?

• H04L 25/02 - Baseband systems Details
• H03F 3/45 - Differential amplifiers

Abstract

A signal measuring method is adapted to measure a low voltage differential signal. The signal measuring method includes: receiving the low voltage differential signal via a low voltage differential signal receiver; comparing the low voltage differential signal with a reference voltage, and accumulating comparison results over one or more frame periods to generate an accumulation result; comparing the accumulation result with reference data to obtain statistical characteristics of the low voltage differential signal; and generating an eye diagram corresponding to the low voltage differential signal according to the statistical characteristics of the low voltage differential signal.

IPC Classes  ?

• G01R 19/25 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques

Abstract

Display processing circuits and compensation methods are provided. The display processing circuit is adapted to compensate an electroluminescence (EL) display device. The display compensation circuit comprises a detecting circuit and a compensation circuit. The detecting circuit is configured to determine a degree of change of a display data within a first time length. The compensation circuit is configured to increase a compensation brightness level applied to the display data when the degree of change is less than a predetermined degree.

IPC Classes  ?

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

Abstract

Analog front-end (AFE) circuit of display receiver includes input pad, voltage detecting circuit, and switching circuit. The input pad may receive input signal of low power mode of Mobile Industry Processor Interface (MIPI) standard and input signal of high-speed mode of MIPI standard. Since voltage level of input signal of different modes are different, the voltage detecting circuit is configured to receive the input signal and generate control signal according to a voltage level of the input signal. The switching circuit is coupled to the voltage detecting circuit and between the input pad and the equalizer circuit. The switching circuit is configured to receive the input signal, and determine whether to pass the input signal from the input pad to the equalizer circuit according to the control signal, wherein the control signal includes two different voltage levels that are respectively corresponding to a high-speed mode and a low power mode.

IPC Classes  ?

• H03K 17/56 - 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

Abstract

A first driver circuit is couplable to at least one second driver circuit. Each of the first/second driver circuits has a first terminal and a second terminal. The first terminal of each driver circuit is commonly coupled to a first transmission bus, and the second terminal of each driver circuit is commonly coupled to a second transmission bus. The first driver circuit outputs a first synchronization signal to the first transmission bus through the first terminal, receives a second synchronization signal from the second transmission bus through the second terminal wherein the second synchronization signal is output by one of the second driver circuit at the time when this second driver circuit receives the first synchronization signal, and calculates a compensation time corresponding to this second driver circuit according to an output time point of the first synchronization signal and a reception time point of the second synchronization signal.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• G06F 3/14 - Digital output to display device

Abstract

A driving circuit, for driving a touch display panel, includes a controller, a first switch and a second switch. The controller is configured to provide a first modulation signal, a second modulation signal, a first control signal and a second control signal. The first switch is a first node. The first node is configured for providing a first gate output signal to the touch display panel. The first switch is turned on or turned off by the first control signal. The second switch is coupled to a second node. The second node is configured for providing a second gate output signal to the touch display panel. The second switch is turned on or turned off by the second control signal.

IPC Classes  ?

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

Abstract

A method of controlling a touch panel for a driver circuit, which has a display part and a touch part, includes steps of: generating, by the display part, a display information according to a plurality of display data for the touch panel; receiving, by the touch part, the display information from the display part; and performing, by the touch part, a touch sensing operation according to the display information.

IPC Classes  ?

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

Abstract

An image calibration system including an image capturing device, a calibration unit, a mount plate, and a processor are provided. The image capturing device includes at least one camera module. The processor is configured to: control the at least one camera module to capture an image of the calibration unit; determine whether there is any other part of the calibration unit not captured yet based on images already captured by the at least one camera module; and in response to determining that there is at least a part of the calibration unit not shown in the captured images, control the at least one camera module to capture another image of the calibration unit. The processor further calculates image calibration parameters based on a sufficient number of qualified images captured by the at least one camera module. The image calibration parameters are used for calibrating image distortion.

IPC Classes  ?

• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• G06F 3/14 - Digital output to display device

Abstract

A touch chip is to receive a first signal and a second signal from a stylus and includes a receiver circuit and a processor circuit. The receiver circuit is to receive the first signal and the second signal. The processor circuit is coupled to the receiver circuit and is to perform operations below: determining whether a signal intensity of the received first signal is greater than a first threshold value; determining whether a second signal is received when the signal intensity of the received first signal is greater than the first threshold value; determining whether a signal intensity ratio of the second signal to the first signal is greater than a second threshold value to generate a determination result when it is determined that the second signal is received; and performing an erase function according to the determination result.

IPC Classes  ?

• G06F 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• 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

Abstract

A stylus includes a plurality of transmission electrodes, which include a first transmission electrode and a second transmission electrode. The first transmission electrode is deployed at a first side of a pen axis of the stylus. The second transmission electrode is deployed at a second side of the pen axis of the stylus. The first side is different from the second side.

IPC Classes  ?

• 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 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry

Abstract

A touch panel and a control method thereof. The control method is applied to a touch panel to receive controls from an active stylus. The control method comprises using a demodulation frequency to demodulate a writing signal received from the active stylus; determining whether a demodulated writing signal is abnormal or not; and in response to determining the demodulated writing signal to be abnormal, adjusting the demodulation frequency to increase an energy of the demodulated writing signal.

IPC Classes  ?

• G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry

Abstract

Disclosed is an electronic device, including a display panel, a driving circuit, and a processor circuit. The display panel is configured to display an image. The driving circuit is configured to drive the display panel to display the image based on an image data. The processor circuit is configured to output the image data to the driving circuit. The driving circuit outputs a request signal to the processor circuit to request the processor circuit to output the image data. The driving circuit adjusts a frame rate of the image based on the image data.

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

Abstract

A global dimming display device and its control circuit and an operation method are provided. The global dimming display device includes a display panel module, a backlight panel module, and a control circuit. The backlight panel module provides backlight to the display panel module. The control circuit checks an image frame. In response to the image frame not being a dark picture, the control circuit performs global dimming on the backlight panel module to set backlight brightness of backlight to normal backlight brightness. In response to the image frame being a dark picture, the control circuit performs global dimming on the backlight panel module to dim the backlight brightness from the normal backlight brightness to dark picture backlight brightness, and gains the image frame of the display panel module to enhance a pixel gray level of the image frame.

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 wafer structure includes a substrate, a scribe line, a chip circuit pattern, and a peripheral metal pattern. The scribe line defines a chip unit on the substrate. The chip circuit pattern is disposed in a central region of the chip unit. The peripheral metal pattern is disposed in a peripheral region of the chip unit surrounding the central region. The peripheral metal pattern includes a seal ring pattern surrounding the central region and an alignment pattern disposed between the scribe line and the seal ring pattern.

IPC Classes  ?

• H01L 23/544 - Marks applied to semiconductor devices, e.g. registration marks, test patterns
• H01L 21/78 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
• H01L 23/58 - Structural electrical arrangements for semiconductor devices not otherwise provided for