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…
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…
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…
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…
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…
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…
Device and method for pixel luminance compensation for display devices with backlight light source array
Granted: September 17, 2024
Patent Number:
12094432
A display device includes a display panel, a backlight module, and a display driver. The backlight module includes a plurality of light sources to illuminate a plurality of zones defined for the display panel. The display driver is configured to store a first light source arrangement type of a first zone of the plurality of zones. The first light source arrangement type is based on an arrangement of one or more light sources with respect to the first zone. The display driver is further…
Device and method for driving a display panel using a scaled gamma curve
Granted: September 10, 2024
Patent Number:
12087197
A display driver comprises control circuitry configured to store a default gamma curve, determine a count of in-region pixels of a target pixel in a display panel and neighboring pixels of the target pixel, the in-region pixels being located in a predetermined region of the display panel, and determine a scale factor based on a ratio of the count of the in-region pixels to a total number of the target pixel and the neighboring pixels. The control circuitry also determines a modified…
Image compression method and apparatus
Granted: September 10, 2024
Patent Number:
12087020
Systems and methods for controlling compression of image data by a quality controller include obtaining a desired target number of bits to be generated from compression of a current image area using a predetermined compression protocol, determining a calculated quantisation level based on the desired number of bits using a predetermined relationship between the number of bits and quantisation level, selecting a discrete quantisation level from a plurality of predetermined discrete…
Capacitive detection of fold angle for foldable devices
Granted: August 27, 2024
Patent Number:
12072741
A system for determining a fold angle of a foldable device includes a plurality of electrodes and a processing system. The processing system is configured to: determine a first detected temperature at a first time; obtain baseline reference absolute capacitance measurements associated with the first detected temperature and associated with a known fold angle of the foldable device; determine a second detected temperature at a second time later than the first time; obtain absolute…
Cascade audio spotting system
Granted: August 6, 2024
Patent Number:
12057138
Systems and methods for identifying audio events in one or more audio streams include the use of a cascade audio spotting system (such as a cascade keyword spotting system (KWS)) to reduce power consumption while maintaining a desired performance. An example cascade audio spotting system may include a first module and a high-power subsystem. The first module is to receive an audio stream from one or more audio streams, process the audio stream to detect a first target sound activity in…
Device and method for pixel data compensation for display drivers with staggered bump arrangement
Granted: July 30, 2024
Patent Number:
12051355
A display driver includes a bump array with a staggered bump arrangement, a data compensation circuit, and driver circuitry. The data compensation circuit processes input pixel data for a pixel of a display panel to generate compensated pixel data. The driver circuitry generates a data voltage based on the compensated pixel data and output the data voltage to the pixel via a bump of the bump array. The processing of the input pixel data is based on a location of the bump in the bump…
Device and method for display brightness control
Granted: July 23, 2024
Patent Number:
12046178
A display driver includes image processing circuitry and drive circuitry. The image processing circuitry is configured to generate first voltage data for a first pixel in a first screen area of a display panel using a first gamma parameter. The image processing circuitry is further configured to generate second voltage data for a second pixel in a second screen area of the display panel using a second gamma parameter set. The image processing circuitry is further configured to determine…
Using electrical resistance to estimate force on an electrode during temperature changes
Granted: July 16, 2024
Patent Number:
12039120
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…
