Capacitive communication channel for auxiliary devices
Granted: January 21, 2025
Patent Number:
12204716
A capacitive input device includes sensing electrodes configured to form a capacitive coupling with auxiliary device electrodes of an attached auxiliary device. The auxiliary device electrodes transmit data signals to the sensing electrodes via the capacitive coupling. The capacitive input device also includes processing circuitry configured to decode the data signals received via the capacitive coupling to obtain decoded data.
User interface system for display-less input devices
Granted: January 14, 2025
Patent Number:
12197802
A system and method for providing an on-demand user interface for an input device. The system includes a first device and a second device. The first device is configured to receive a first user input and select a first notification from a plurality of notifications stored on the first device based at least in part on the first user input. The first device then outputs the first notification using one or more hardware resources. The second device detects the first notification output by…
Distributed analog display noise suppression circuit
Granted: December 31, 2024
Patent Number:
12182366
A processing system including an amplifier configured to generate, from multiple spatial-common-mode-processed signals, a spatial common mode estimate and multiple feedback signals. The processing system includes multiple charge integrators configured to obtain resulting signals from the capacitive sensor electrodes, each of the resulting signals including a spatial common mode component and a residual noise component. The charge integrators generate multiple…
Mitigation of display artifacts from beacon signals
Granted: December 17, 2024
Patent Number:
12169608
In general, in one aspect, one or more embodiments relate to an input device that includes a proximity sensing panel including sensor electrodes, and a proximity sensing circuit. The proximity sensing circuit configured to receive an indication of a transition from a first image refresh rate to a second image refresh rate, wherein the first image refresh rate is greater than a beacon signal rate and the second image refresh rate is equal to or lower than the beacon signal rate. The…
Image data reception via non-video interface
Granted: December 17, 2024
Patent Number:
12169469
This disclosure provides methods, devices, and systems for transmitting and receiving image data. The present implementations more specifically relate to repurposing non-video interfaces to receive image data. In some aspects, an image processing device may be coupled to an image source via an audio interface. For example, the audio interface may be an inter-IC sound (I2S) serial bus interface having at least a serial data input and a word select (WS) input. In some implementations, the…
Inter-integrated circuit sound (I2S) serial bus interface with support for multiple sample rates
Granted: December 17, 2024
Patent Number:
12169468
This disclosure provides methods, devices, and systems for audio communications. The present implementations more specifically relate to transmitting and receiving audio data at sample rates that are non-integer multiples of a clock frequency. In some aspects, a serial bus interface may generate a word select (WS) signal based on an input clock signal and may dynamically adjust a periodicity of the WS signal so that the WS signal has an effective frequency equal to a non-integer multiple…
Multi-functional ambient light sensor packaging
Granted: December 3, 2024
Patent Number:
12161026
A touchscreen display device includes: a display; a flexible printed circuit; touch sensing electrodes connected to the flexible printed circuit; and a multi-functional ambient light sensor package mounted on the flexible printed circuit. The multi-functional ambient light sensor package includes: an ambient light sensor; transmitter and receiver circuitry connected to the touch sensing electrodes via the flexible printed circuit; and a controller configured to obtain capacitance…
Howling suppression for active noise cancellation (ANC) systems and methods
Granted: November 26, 2024
Patent Number:
12154537
An audio processing system, such as an active noise cancellation system, and method suppresses tonal howling in a feedback system based on a gain enhancement system that emphasizes the howling signal and deemphasizes non-howling signals. The howling signal is extracted from an error signal generated from sound from a speaker sensed by an error sensor. The gain enhancement signal is generated based on a first power ratio between a filtered reference signal, generated based on sound sensed…
Attention cues for head-mounted display (HMD)
Granted: November 12, 2024
Patent Number:
12141349
This disclosure provides methods, devices, and systems for indicating an attentiveness of a user of a head-mounted display (HMD) device. The HMD device may include a camera configured to capture images of the surrounding environment, an electronic display configured to display the images captured by the camera, and one or more sensors configured to track a direction of gaze of the user. In some aspects, the HMD device may output an attention cue based on the images displayed on the…
Color compensation for panel display device using light source array for backlighting
Granted: November 12, 2024
Patent Number:
12142233
A display device that includes a display panel, a backlight device, and a display driver. The backlight device includes light sources configured such that color of light emitted from the light sources varies with luminance levels. The display driver is configured to: process a first input grey level of a first color for a target pixel based on a specified luminance level of a corresponding light source to determine a first output grey level of the first color for the target pixel; and…
Capacitive detection of fold angle for foldable devices
Granted: November 12, 2024
Patent Number:
12141000
A system for determining a fold angle of a foldable device, the system including a plurality of electrodes and a processing system, wherein the processing system is configured to obtain transcapacitance measurements via a subset of the plurality of electrodes; obtain absolute capacitance measurements via the subset of the plurality of electrodes; and determine the fold angle of the foldable device based on the transcapacitance measurements and the absolute capacitance measurements.
Backlight control for display devices
Granted: November 5, 2024
Patent Number:
12136398
A display device includes a display panel, a backlight module, and backlight control circuitry. The backlight module is configured to illuminate the display panel, the backlight module comprising a plurality of light sources. The backlight control circuitry is configured to control first luminance of a first light source of the plurality of light sources based at least in part on a first weighted average of brightness values for a first set of pixels of the display panel.
System and method for touch-to-display noise mitigation
Granted: October 29, 2024
Patent Number:
12130989
Driving a display of an input-display device includes generating, during a first display frame, a first touch sensing waveform to be applied to a touch screen of the display, and generating, during a second display frame, a second touch sensing waveform to be applied to the touch screen. The first touch sensing waveform generates on the display a first touch-to-display noise pattern of touch-to-display noise artifacts. The second touch sensing waveform generates on the display a second…
Input device with near-field communication
Granted: October 29, 2024
Patent Number:
12130980
An input device a touchpad, an near field communication (NFC) controller, and an antenna electrically interfaced with the NFC controller. The antenna includes an antenna rod. The antenna rod is straight and disposed outside a perimeter of the touchpad.
Capacitive detection of fold angle for foldable devices
Granted: October 29, 2024
Patent Number:
12130133
A system for determining a fold angle of a foldable device includes a plurality of electrodes and a processing system. The plurality of electrodes includes at least one first electrode and at least one second electrode, wherein the at least one second electrode is farther from a fold line of the foldable device than the at least one first electrode. The processing system is configured to: obtain at least one first absolute capacitance measurement via the at least one first electrode and…
Artificial intelligence image frame processing systems and methods
Granted: October 22, 2024
Patent Number:
12126667
Systems and method for streaming video content include downscaling video content using a downscaling model to generate downscaled video content and downloading the downscaled video content as a video stream and corresponding upscaling model to a client device. The system converts received video frames to a video memory format comprising channels having the same memory allocation size, each subsequent channel arranged in an adjacent memory location, for input to the downscaling model. The…
Backlight control for providing compensated luminance to display devices
Granted: October 22, 2024
Patent Number:
12125447
A display driver includes a display panel, a backlight array, and backlight control circuitry. The backlight array includes a plurality of light sources and is configured to illuminate the display panel. The backlight control circuitry is configured to determine first base luminance for a first light source of the plurality of light sources based at least in part on pixel data for a first set of pixels associated with the first light source. The backlight control circuitry is further…
Capacitive sensor with temperature drift mitigation
Granted: October 22, 2024
Patent Number:
12123753
A system and method for mitigating background capacitance and for mitigating the effect of temperature drift in compensation circuitry is provided. The system includes a plurality of sensor electrodes including a first sensor electrode and a second sensor electrode. The first sensor electrode is coupled to a first channel and the second sensor electrode is coupled to a second channel. The system includes a processing system configured to drive the plurality of sensor electrodes with a…
Noniterative entropy coding
Granted: October 15, 2024
Patent Number:
12119847
This disclosure provides methods, devices, and systems for data compression and decompression. The present implementations more specifically relate to entropy encoding and decoding techniques for keeping a state variable within upper and lower bounds using a noniterative process. The entropy encoding uses a fixed state threshold to determine a number of bits to remove and removes the bits from a current state prior to encoding a symbol with the current state. The entropy decoding decodes…
Backlight control for display devices
Granted: September 24, 2024
Patent Number:
12100361
A display device includes a display panel, a backlight device, a drive circuit, and a backlight control circuit. The backlight device includes a plurality of light sources configured to illuminate the display panel. The drive circuit is configured to update the display panel based on an input image. The backlight control circuit is configured to apply a filter to a target part of the input image to generate a filtered image part. The target part of the input image is displayed in a…
