Systems and methods for detecting ambient light or proximity with an optical sensor
Granted: November 16, 2021
Patent Number:
11175177
A method for determining an amount of ambient light illumination is disclosed. The method includes: estimating a contribution per color component in an optical sensing region of an input frame to be displayed on a display device, wherein the optical sensing region corresponds to a location of an optical sensor in the display device, wherein the input frame comprises digital information for each color component for each pixel of the input frame; causing the optical sensor to detect an…
Integrated circuit device and electronic device
Granted: November 9, 2021
Patent Number:
11171111
An integrated circuit device comprises: a resin film that is flexible; a plurality of traces bonded on a surface of the resin film and arrayed in a specific direction; an IC chip bonded on the surface of the resin film, located offset to the traces in a direction perpendicular to the specific direction, and connected to the traces; and a protection pattern formed on the surface of the resin film, located in the specific direction with respect to a disposition region in which the IC chip…
Device and method for controlling a display panel
Granted: November 9, 2021
Patent Number:
11170692
The display driver includes control circuitry and signal supply circuitry. The control circuitry is configured to store a first setting table for a first frame rate and a second setting table for a second frame rate. The control circuitry is further configured to, in response to adjusting a frame rate of a display device from the first frame rate to the second frame rate, generate an interpolated control parameter through interpolation of a first control parameter obtained from the first…
Device and method for addressing unintended offset voltage when driving display panel
Granted: November 2, 2021
Patent Number:
11164527
A processing system comprises a plurality of output terminals connectable to data lines of a display panel and a plurality of output amplifiers configured to output a plurality of drive voltages, respectively. The drive voltages have the same polarity. The processing system further comprises first switch circuitry configured to connect a first output terminal of the plurality of output terminals to a selected one of the plurality of output amplifiers.
Mitigating artifacts associated with long horizontal blank periods in display panels
Granted: November 2, 2021
Patent Number:
11164511
A display panel includes a first scan driving circuit, a second scan driving circuit, and a third scan driving circuit. The first scan driving circuit is configured to generate a first gate scan signal to control programming of a first display line in a first horizontal sync period that includes a long horizontal blank (LHB) period. The second scan driving circuit is configured to generate a first dummy gate scan signal to control initialization of a second display line in the LHB period…
Device and method for color gamut adjustment
Granted: November 2, 2021
Patent Number:
11164500
A display driver comprises color gamut adjustment circuitry and drive circuitry. The color gamut adjustment circuitry is configured to generate an in-use parameter set based on a plurality of parameter sets corresponding to different color gamuts and a position of a target pixel and generate an output pixel data by performing color gamut adjustment processing on an input pixel data of the target pixel based on the in-use parameter set. The drive circuitry is configured to drive a display…
Excitation schemes for an input device
Granted: November 2, 2021
Patent Number:
11163406
A system and method for capacitive sensing comprises driving a first sensor electrode of a plurality of sensor electrodes with a first sensing signal to acquire a first resulting signal with the first sensor electrode during a period and driving a second sensor electrode of the plurality of sensor electrodes with the first sensing signal to acquire a second resulting signal with the second sensor electrode during the period. Further, a third sensor electrode of the plurality of sensor…
Multi-stream target-speech detection and channel fusion
Granted: October 26, 2021
Patent Number:
11158333
Audio processing systems and methods include an audio sensor array configured to receive a multichannel audio input and generate a corresponding multichannel audio signal and target-speech detection logic and an automatic speech recognition engine or VoIP application. An audio processing device includes a target speech enhancement engine configured to analyze a multichannel audio input signal and generate a plurality of enhanced target streams, a multi-stream target-speech detection…
Duty cycle corrector and converter for differential clock signals
Granted: October 26, 2021
Patent Number:
11159152
Various techniques are provided to correct the duty cycles and convert differential clock signals in synchronized systems. In one example, a method includes receiving an input differential clock signal having a distorted duty cycle. The method also includes adjusting the input differential clock signal to provide an output differential clock signal with a corrected duty cycle. The adjusting is performed in response to signals provided by a differential amplifier and a common mode…
Waveform generation circuit for finely tunable sensing frequency
Granted: October 26, 2021
Patent Number:
11159150
Embodiments disclosed herein generally relate to electronic devices, and more specifically, to a waveform generation circuit for input devices. One or more embodiments provide a new waveform generator for an integrated touch and display driver (TDDI) and methods for generating a waveform for capacitive sensing with a finely tunable sensing frequency. A waveform generator includes accumulator circuitry, truncation circuitry, and saturation circuitry. The accumulator circuitry is…
Piezoresistive sensing input device
Granted: October 26, 2021
Patent Number:
11157106
A system and method for input sensing comprises a display device having at least one piezoresistive sensing transistor. During a first period, a first resulting signal is received with a first data line by driving a first piezoresistive sensing transistor of a first subpixel of the display device with a first select signal. The first resulting signal corresponds to a change in resistance of the first piezoresistive sensing transistor. Further, at least one of force information and…
Light source for camera
Granted: October 19, 2021
Patent Number:
11153513
A device comprises a first camera, wherein the first camera includes one or more photosensors configured to detect visible light passing, in a first direction, through a first surface. The device further includes a light source configured to emit infrared (IR) light, in a second direction opposite the first direction, through the first surface. The device also includes a second camera configured to detect reflections of the IR light.
Vision-based presence-aware voice-enabled device
Granted: October 19, 2021
Patent Number:
11152001
A method and apparatus for voice search. A voice search system for a voice-enabled device captures one or more images of a scene, detects a user in the one or more images, determines whether the position of the user satisfies an attention-based trigger condition for initiating a voice search operation, and selectively transmits a voice query to a network resource based at least in part on the determination. The voice query may include audio recorded from the scene and/or the one or more…
Device and method for controlling a display panel
Granted: October 19, 2021
Patent Number:
11151941
A display driver includes signal supply circuitry and a power source controller. The signal supply circuitry is configured to update a display panel during a refresh period and not update the display panel during a non-refresh period that follows the refresh period. The power source controller is configured to modify a high-side power source voltage supplied to the display panel at least during the non-refresh period.
Display interface with foveal compression
Granted: October 12, 2021
Patent Number:
11145277
A method of transporting foveal image data is disclosed. A host device receives image data from an image source and renders a full field-of-view (FFOV) image using the image data. The host device further identifies a foveal region of the FFOV image and renders a foveal image corresponding to the foveal region using the image data. More specifically, the foveal image may have a higher resolution than the foveal region of the FFOV image. The host device may then transmit each of the foveal…
Field recalibration of displays
Granted: October 12, 2021
Patent Number:
11145246
Aspects described herein include a method and associated processing system for a display having a plurality of pixels. The method comprises driving, using display circuitry, a plurality of pixels of a display device to display one or more test patterns. The display device is integrated into a manufactured input device. The method further comprises receiving field-set mura compensation data that is based on one or more images of the plurality of pixels. The one or more images are acquired…
Fingerprint sensing apparatus with in-sensor fingerprint enrollment and verification
Granted: October 12, 2021
Patent Number:
11144746
A fingerprint sensing apparatus with in-sensor fingerprint enrollment and verification. The sensing apparatus includes a fingerprint sensor configured to generate sensor data in response to user contact with a sensing region and a processing system operable in at least a first mode and a second mode. When operating in the first mode, the processing system is configured to detect a fingerprint of the user based on the sensor data. When operating in the second mode, the processing system…
Device and method for sensor electrode testing
Granted: October 12, 2021
Patent Number:
11144162
A method for testing a sensor electrode is provided. The method includes acquiring a first resulting signal from a sensor electrode. The method further includes determining an in-phase response and a quadrature-phase response through a quadrature demodulation based on the first resulting signal. The method further includes detecting a defect of the sensor electrode based on the in-phase response and the quadrature-phase response.
Systems and methods for optical imaging based on diffraction gratings
Granted: October 5, 2021
Patent Number:
11137534
Disclosed is a device comprising: a light guide configured to receive incident light from one or more light sources; a cover layer with a sensing surface configured to receive an input object to be sensed; and a set of photodetectors. The light guide includes diffraction gratings configured to diffract the incident light as diffracted light, wherein the diffracted light exits the light guide and travels towards the sensing surface. The diffracted light is reflected from the sensing…
Sensor electrode patterns for input devices
Granted: October 5, 2021
Patent Number:
11137856
A sensing device comprises sensor electrodes arranged in an array of rows and columns, and vias. A first vias is arranged in a first direction, and corresponds to a first column of sensor electrodes adjacent to a first side edge of the sensing device. A second via is arranged in a second direction different than the first direction, and corresponds to a second column of the sensor electrodes adjacent to a second side edge of the sensing device. Each of the sensor electrodes is configured…
