Abstract: An input device comprising a set of electrodes configured to detect a user input of a user and a processing system is provided. The processing system comprises a signal level monitor configured to detect burst noise or impulse noise and one or more processors configured to: perform a scan step of a plurality of scan steps by driving one or more first transmitter electrodes of the plurality of transmitter electrodes with one or more sensing signals; obtain one or more first resulting signals corresponding to the one or more sensing signals used to drive the one or more first transmitter electrodes; detect, based on the one or more first resulting signals, the burst noise or the impulse noise corresponding to the scan step; and in response to detecting the burst noise or the impulse noise, restart the scan step.

Abstract: A device includes a display and a first light source configured to emit light, wherein the first light source is proximate to the display. The device further includes a first camera disposed behind the display, wherein the first camera is configured to detect reflections of the light emitted by the first light source. The first camera is further configured to capture a first image based at least in part on the reflections, wherein the reflections are partially occluded by the display. The device also includes a second camera proximate to the display, wherein the second camera is configured to capture a second image. In addition, the device includes a depth map generator configured to generate depth information about one or more objects in a field-of-view (FOV) of the first and second cameras based at least in part on the first and second images.

Abstract: A processing system for an input device comprises sensor circuitry. The sensor circuitry is configured to operate sensor electrodes for input sensing during a first sensing frame. During a first period of the first sensing frame the sensor circuitry is configured to drive a first portion of the sensor electrodes with a sensing signal, drive a second portion of the sensor electrodes with a guarding signal, and drive a third portion of the sensor electrodes with a reference signal. The guarding signal and the sensing signal have at least one characteristic in common selected from the group consisting of amplitude, phase and frequency. The third portion of the sensor electrodes overlaps a first gate line of a display panel selected for updating during the first period.

Abstract: A display driver includes image processing circuitry, driver circuitry, and test circuitry. The image processing circuitry is configured to generate first output data during a first display update period and generate second output data during a second display update period. The driver circuitry is configured to update a display panel based on the first output data during the first display update period and update the display panel based on the second output data during the second display update period. The test circuitry is configured to test the image processing circuitry during a test period disposed between the first display update period and the second display update period.

Abstract: A sensor pattern for capacitive sensing includes a first electrode and a multitude of second electrodes capacitively coupled to the first electrode. The first electrode includes a strip extending in a vertical direction across the sensor pattern. The multitude of second electrodes include a first subset and a second subset. The first subset of the multitude of second electrodes is arranged in a first column, the first column extending in a vertical direction. The second subset of the multitude of second electrodes is arranged in a second column, the second column extending in the vertical direction. The first subset and the second subset of the multitude of electrodes are disposed adjacent to the first electrode on opposing sides of the first electrode.

Abstract: Low ground mass mitigation for pens includes sensing circuitry configured to transmit, during a first frame, a beacon signal on a first subset of sensing electrodes, the first subset being along a first axis of an input device, transmit, during a second frame, the beacon signal on a second subset of the sensing electrodes, the second subset being along the first axis and different from the first subset, and receive a pen signal transmitted responsive to the beacon signal. The processing circuitry is configured to detect a location of a capacitive pen using the pen signal.

Abstract: A processing system includes sensor circuitry and processing circuitry. The sensor circuitry is configured to, using the sensor electrodes, obtain capacitive measurements of a sensing region, and obtain a resistance measurement of the sensing region. The processing circuitry is coupled to the sensor circuitry. The processing circuitry is configured to determine a location of an input object using the capacitive measurements of the sensing region; and determine a force value based on the resistance measurement and the location of the input object. Determining the force value mitigates a temperature variation of the sensing region affecting the resistance measurement. The processing circuitry is further configured to report the force value.

Abstract: A method and apparatus for sensing strain in a flexible electronic display. In some implementations, a display controller may be coupled to an electronic display panel. The display controller is configured to receive sensor signals from one or more piezoresistive sensors disposed in the electronic display panel, determine an amount of strain in the electronic display panel based on the received sensor signals, determine a bend angle of the electronic display panel based on the determined amount of strain, and update a configuration of the electronic display panel based at least in part on the determined bend angle. In some implementations, the electronic display panel may be an organic light-emitting diode (OLED) display panel. In some implementations, the electronic display panel may include a polycrystalline silicon (poly-Si) backplane disposed on a flexible substrate, where each of the piezoresistive sensors includes one or more strain gauges formed on the poly-Si backplane.

Abstract: A method and apparatus of global coarse baseline correction (GCBC) for capacitive scanning. An input device may include a number (N) of sensor electrodes, a GCBC circuit, and detection circuitry. Each sensor electrode is associated with a respective channel. The GCBC circuit produces sensing signals in each of the N channels and the detection circuitry may detect changes in the capacitances of one or more sensor electrodes based on the sensing signals. In some implementations, the GCBC circuit may include a current source which outputs a first current, a transimpedance amplifier (TIA) which converts the first current to a sensing voltage, and a number (N) of resistors that can be coupled between the output of the TIA and the N sensor electrodes, respectively. The coupling of each resistor between the TIA and a respective sensor electrode produces a sensing signal in the channel associated with the sensor electrode.

Abstract: A display driver comprises gamma processing circuitry, compensation circuitry, and driver circuitry. The gamma processing circuitry is configured to process the image data to generate gamma processed image data. The compensation circuitry is configured to process the gamma-processed image data, based on a ratio of a number of display elements that emit light to a total number of display elements of a display panel, to generate compensated image data. The driver circuitry is configured to drive the display panel based on the compensated image data.

Abstract: An input-display device includes a display screen with display pixels, capacitive sensing electrodes for capacitive sensing in a sensing region of the display screen, and a gate driver circuit associated with the display screen. The gate driver circuit superimposes a critical time window on a full-duration gate control pulse of a gate control signal. The critical time window partially overlaps with the full-duration gate control pulse at least at an end of the full-duration gate control pulse. The gate driver circuit further determines that a transient in a sensing waveform of the capacitive sensing occurs in the critical time window superimposed on the full-duration gate control pulse, and based on the determination, shorten the full-duration gate control pulse to obtain a reduced-duration gate control pulse. The gate driver circuit provides the reduced-duration gate control pulse to a pixel circuit of one of the display pixels.

Abstract: A processing system for an input device includes an in-phase and quadrature (I/Q) receiver module including a first and second charge integrators, and first and second demodulator modules. The I/Q receiver module alternates integration of a resulting signal, received from a receiver electrode of the input device, between the first and the second charge integrators in four consecutive quarter cycles, to obtain four consecutive integration results. The four consecutive quarter cycles coincide with one cycle of a local oscillator signal for the first and second demodulator modules. The I/Q receiver module further alternates demodulation of the four consecutive integration results between the first and second demodulator modules. The first demodulator module performs an in-phase demodulation to produce an in-phase component of a sensing signal associated with the first resulting signal, and the second demodulator module performs a quadrature demodulation to produce a quadrature component of the sensing signal.

Abstract: A display panel includes a plastic substrate and a first inner lead bonding (ILB) electrode on the plastic substrate. The first ILB electrode includes a first bonding segment, a second bonding segment, and a first connection segment. The first bonding segment is extended in a first direction oblique to a vertical direction of the display panel. The first connection segment is configured to provide an electrical connection between the first bonding segment and the second bonding segment. The first ILB electrode is configured to be bonded to an integrated circuit chip using one of the first bonding segment or the second bonding segment.

Abstract: An input device comprises a plurality of sensor electrodes and a processing system coupled to the plurality of sensor electrodes. The processing system comprises a sensor driver. The sensor driver comprises clock synchronization circuitry, a blocking pulse generator, and a sensor module. The clock synchronization circuitry is configured to receive an external clock signal, and synchronize an internal clock signal with the external clock signal. The blocking pulse generator is configured to generate a first blocking pulse based on the internal clock signal. The sensor module comprises sensing circuitry and is configured to pause acquisition of a resulting signal from a sensor electrode based on the first blocking pulse.

Abstract: Sensing systems and methods that utilize zero row sum code division multiplexing (CDM) drive matrices to reduce or eliminate radiative emissions. Measurements corresponding to an input received at a sensing region of the input device are obtained by driving a first subset of transmitters of the input device according to a first portion of a CDM drive matrix, wherein the CDM matrix is a zero row sum matrix, and obtaining first measurement signals with the plurality of receivers, and driving a second subset of the transmitters according to a second portion of the CDM drive matrix, wherein the first and second subsets of transmitters include at least one transmitter in common, and obtaining second measurement signals with the plurality of receivers. An image of the input may be generated based on the obtained measurements.

Abstract: A system and method for rendering subpixels comprising performing an eight-color halftoning process on the second image data to generate third image data which describe a grayscale value of each of an R subpixel, a G subpixel and a B subpixel of each pixel with one bit, generating the third image data by performing a dithering process on the second image data using a dither value selected from elements of the dither table, when the third image data associated with a pixel of interest of the display panel is generated, and driving the display panel in response to the third image data.

Abstract: Image compression circuitry comprises first-stage compression circuitry, first-stage selector circuitry, second-stage compression circuitry, and second-stage selector circuitry. The first-stage compression circuitry is configured to sequentially receive a plurality of input blocks each comprising pixel data of a plurality of pixels, generate a plurality of first-stage compressed blocks by compressing the plurality of input blocks, and generate a plurality of first-stage decompressed blocks. The first-stage selector circuitry is configured to select first-stage-selected decompressed blocks from among the plurality of first-stage decompressed blocks and select first-stage-selected compressed blocks corresponding to the first-stage-selected decompressed blocks from among the plurality of first-stage compressed blocks.

Abstract: An input-display device includes a display screen disposed on a display substrate, the display screen including a multitude of display pixels. The input-display device further includes a multitude of capacitive sensing electrodes for capacitive sensing in a sensing region of the display screen. The input-display device also includes a source driver circuit configured to generate a data voltage for driving a pixel circuit associated with one display pixel of the multitude of display pixels and determine a timing for a compensatory modulation of the data voltage. The timing is determined using a sensing waveform of the capacitive sensing. The source driver circuit is also configured to determine an amplitude of the compensatory modulation, generate a modulated data voltage by applying the compensatory modulation to the data voltage, and drive the pixel circuit using the modulated data voltage.

Abstract: A processing system is disclosed. The processing system includes an amplifier including a multitude of input resistors receiving a multitude of reduced noise signals from a multitude of charge integrators and a summing resistor at an output of the amplifier. The amplifier is configured to generate a feedback signal at the output of the amplifier by amplifying each of a multitude of reduced noise signals using a gain value and a cardinality of the multitude of reduced noise signals. The multitude of charge integrators is configured to obtain a multitude of resulting signals from a multitude of capacitive sensor electrodes coupled to a noise source and generate the multitude of reduced noise signals by mitigating noise in the multitude of the resulting signals, at the multitude of charge integrators, using the feedback signal. Resistances of the multitude of input resistors, a resistance of the summing resistor, and the gain values are selected to mitigate the noise.

Abstract: A display system includes a display panel and first and second display drivers. The first display driver is configured to generate first region total current data corresponding to a subtotal of estimated pixel currents of respective pixels in a first region of the display panel. The second display driver is configured to generate second region total current data corresponding to a subtotal of estimated pixel currents of respective pixels in a second region of the display panel. The first display driver is further configured to receive the second region total current data from the second display driver, receive first image data for the first region; generate first voltage data based on the first image data, and update the first region of the display panel based on the first voltage data. Generating the first voltage data includes an IR-drop compensation based on the first and second region total current data.