Abstract: Systems and methods for optical imaging are disclosed. An optical sensing system, including a display, an optical sensor, and a processor communicatively coupled to the display and the optical sensor is provided. The processor is configured to execute an input object image capture method. The method determines that an input object is proximate to an optical sensing region of the display, and in response to determining that an input object is proximate to the sensing region of the display, the optical sensing system illuminates the sensing region with an illumination sequence. The illumination sequence includes a cue mark sequence preceding an illumination pattern, where the cue mark sequence contains information about the illumination pattern.

Abstract: The invention relates to a processing system. The processing system includes a sensor module performing a first measurement to obtain a combination signal using a first sensor electrode and a second sensor electrode. The first electrode is driven using a first modulated signal with a first driving voltage amplitude and simultaneously the second electrode is driven using a second modulated signal with a second driving voltage amplitude greater than the first driving voltage amplitude, while simultaneously first and second resulting signals are received from the first and second electrodes, respectively. The sensor module is further performs a second measurement to obtain a transcapacitance signal using the first and second sensor electrodes.

Abstract: A semiconductor device for an input device comprises a die body comprising sensor circuitry, a plurality of pads and a sensor bus. The sensor circuitry is configured to operate a plurality of sensor electrodes disposed in a single layer for capacitive sensing. A first pad of the plurality of pads is configured to be coupled to a first sensor electrode of the plurality of sensor electrodes, a second pad of the plurality of pads is configured to be coupled to a second sensor electrode of the plurality of sensor electrodes, and a third pad of the plurality of pads is configured to be coupled to a third sensor electrode of the plurality of sensor electrodes. The sensor bus comprises a plurality of wires. A first wire of the plurality of wires is configured to couple the first pad and the second pad to a first transmitter of the sensor circuitry and a second wire of the plurality of wires is coupled to the third pad to a first receiver of the sensor circuitry.

Abstract: A system and method for operating sensor electrodes comprises driving, during a first period, a first portion of the sensor electrodes with a sensing signal. A second portion of the sensor electrodes is driven with a guarding signal during the first period. The second portion is adjacent to the first portion. The guarding signal and the sensing signal have at least one characteristic in common that is selected from a group consisting of amplitude, phase, and frequency. A third portion of the sensor electrodes is electrically floated or driven with a direct current signal during the first period. The third portion is adjacent to the second portion but not adjacent to the first portion.

Abstract: A semiconductor integrated circuit comprises a scan flipflop comprising a scan input and a data input; and scan control circuitry. The scan control circuitry is configured to control the scan flipflop to capture a value inputted to the scan input in a capture mode.

Abstract: Aspects described herein include a method and associated input device and processing system. The method comprises dividing a sensing region into a plurality of regions. The sensing region is defined by a plurality of sensor electrodes. Each region of the plurality of regions is partially overlapped by one or more other regions. The method further comprises detecting, during at least a first active input sensing sub-period, a presence of an active input device by a first sensor electrode. The method further comprises selecting, based on a location of the first sensor electrode, a first region of the plurality of regions that includes the first sensor electrode. The method further comprises determining, during at least a second active input sensing sub-period, a location of the active input device using sensor electrodes that are included in the first region.

Abstract: A processing system for an optical sensing device may comprise receiver circuitry and a determination module. The processing system may also include drive circuitry configured to drive a light source to emit light. The receiver circuitry is coupled to a photodetector, and the receiver circuitry is configured to acquire a resulting signal from the photodetector, and generate a measurement of light received by the photodetector based on the resulting signal. The receiver circuitry includes high-pass filter circuitry configured to high-pass filter the resulting signal to generate a high-pass filtered signal based. The determination module is configured to generate a light measurement based on the high-pass filtered signal.

Abstract: An example method of capacitive sensing includes: transmitting a first waveform over a first time period; transmitting a second waveform over a second time period, wherein the second waveform is independent of the first waveform, and wherein at least a portion of the second time period does not overlap the first time period; receiving, from sensor electrodes, a first resulting signal in response to capacitive coupling of the first waveform and a second resulting signal in response to capacitive coupling of the second waveform; and processing the second resulting signal over at least a portion of the first time period, and the second time period, to obtain independent capacitive measurements.

Abstract: This disclosure generally provides an input device that includes multiple sensor and display electrodes and a processing system. The processing system includes a plurality of local receivers coupled to respective ones of the sensor electrodes, where the local receivers are configured to acquire first resulting signals from the sensor electrodes. The processing system also includes a central receiver coupled to the sensor electrodes and configured to acquire second resulting signals from each of the sensor electrodes simultaneously.

Abstract: A display driver comprises image processing circuitry, compensation circuitry, voltage data generator circuitry, and drive circuitry. The image processing circuitry is configured to generate a first voltage data based on an image data corresponding to an image to be displayed on a display panel. The compensation circuitry is configured to generate correction values for pixels of the display panel, based on a total current consumed in the pixels of the display panel and positions of the pixels in the display panel. The voltage data generator circuitry is configured to generate a second voltage data by correcting the first voltage data based on the correction values. The drive circuitry is configured to write drive voltages into the pixels based on the second voltage data.

Abstract: A semiconductor device comprises a semiconductor substrate, a connection pad, and a bump. The connection pad is connected to the bump and disposed between the semiconductor substrate and the bump. The connection pad has one or more slits.

Abstract: A method for optically imaging an object using a display device includes: illuminating, by the display device, an object at a sensing region corresponding to an optical sensor of the display device; conditioning, by the display device, light from the sensing region, wherein conditioning the light includes focusing and reflecting the light; receiving, by the display device, the conditioned light at photodetectors of the optical sensor; and generating, by a processing system associated with the display device, an image of the object based on the conditioned light received at the photodetectors of the optical sensor.

Abstract: A host device divides original data into first to Nth stream data for N being an integer of two or more, generates first to Nth compressed stream data by sequentially compressing the first to Nth stream data with a variable length compression, divides the first to Nth compressed stream data into fixed-length blocks, and sequentially transmits the fixed-length blocks to the display driver. The display driver includes a memory storing therein the fixed-length blocks and a decompression circuitry reading out the fixed-length blocks from the memory. The decompression circuitry includes first to Nth processing circuits. The first to Nth processing circuits each perform a predetermined process on the fixed-length blocks received to generate processed data. The host device sorts the fixed-length blocks so that the fixed-length blocks are supplied in the order in which the first to Nth processing circuits require the fixed-length blocks.

Abstract: A system and method for synchronizing multiple integrated circuit (IC) chips for an input device having a display device integrated with a capacitive sensing device. A first one of the IC chips is a master IC chip and a second one of the IC chips is a slave IC chip. The master IC chip is configured to transmit synchronization signals to and from the slave IC chip, such that capacitive frames are acquired by each of the IC chips at substantially the same time, the initiation of the sensing signals is synchronized for each of the IC chips and the clock signals of the slave IC chips are synchronized with the clock signal of the master IC chip.

Abstract: A processing system for a display device comprises a display driver configured to generate a gate select signal and output the gate select signal to gate select control circuitry to be driven on gate lines for display updating. The gate select signal comprises a transition from a first voltage to a second voltage, a transition from the second voltage to a third voltage, and a transition from the third voltage to the first voltage. The second voltage is greater than the first voltage and the second voltage is maintained for a first period. The third voltage is greater than the second voltage and the third voltage is maintained for a second period. The gate select signal is driven by the gate select control circuitry on gate lines of the display device to select one or more subpixels of the display device for display updating.

Abstract: Display systems, devices and methods that utilize one or more native display elements as photo-sensing elements to detect light. A display device includes a plurality of light-emitting diode (LED) pixel elements arranged in an array having a plurality of columns and a plurality of rows, and a control circuit configured to selectively activate a first LED pixel element to emit light, and simultaneously activate a second LED pixel element to detect light.

Abstract: Systems and methods for performing operations based on acoustic locationing are described. An example device includes one or more microphones configured to sense sound waves propagating in an environment. The example device also includes one or more processors and one or more memories coupled to the one or more processors. The one or more memories store instructions that, when executed by the one or more processors, cause the device to recover sound wave information from the sensed sound waves, detect a presence of one or more persons in the environment based on the received sound wave information, determine an operation to be performed by one or more smart devices based on the detected presence of one or more persons, and instruct the one or more smart devices to perform the operation.

Abstract: An input device includes a plurality of sensor electrodes and a conductive guide. The sensor electrodes may be configured to sense an electric field within a sensing region. A first portion of the conductive guide may be configured to contact an input object outside the sensing region. A second portion of the conductive guide may be configured to interact with the electric field. The input device may include a processing system couple to the plurality of sensor electrodes to evaluate the electric field from the plurality of sensor electrodes and determine whether an input object is in contact with the first portion of the conductive guide.

Abstract: A capacitive sensing array includes a first transmitter electrode, a plurality of first receiver electrodes, a second transmitter electrode, and a plurality of second receiver electrodes disposed in a first row of the array. The first transmitter electrode is disposed in a first column of the array and is coupled to a first transmitter channel. The first receiver electrodes are disposed in a second column of the array, adjacent the first transmitter electrode, and are coupled to a respective one of a plurality of first receiver channels. The second transmitter electrode is disposed in a third column of the array and is coupled to a second transmitter channel. The second receiver electrodes are disposed in a fourth column of the array, adjacent the second transmitter electrode, and are coupled to a respective one of the first receiver channels.

Abstract: Disclosed are systems and methods that include a device for updating biometric data in an enrollment data set. The device includes a biometric sensor and a processor. The processor is configured to reject an authentication attempt based on a biometric input from the biometric sensor failing a first match determination, accept an additional authentication attempt based on an additional biometric input from the biometric sensor passing an auxiliary match determination, and update a biometric data repository based on the biometric input passing an auxiliary match determination.