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…
Device and method for driving a display panel to improve voltage drop compensation
Granted: July 9, 2024
Patent Number:
12033572
A display driver includes image processing circuitry and drive circuitry. The image processing circuitry is configured to determine a total current of a display panel and perform an IR-drop compensation using the total current and a first graylevel for a first subpixel of the display panel to determine a first voltage level for the first subpixel. The drive circuitry is configured to update the first subpixel based at least in part on the first voltage level.
Compressing probability tables for entropy coding
Granted: July 9, 2024
Patent Number:
12034462
This disclosure provides methods, devices, and systems for data compression. The present implementations more specifically relate to encoding techniques for compressing probability tables used for entropy coding. In some aspects, an entropy encoder may encode a probability table so that one or more contexts are represented by fewer bits than would otherwise be needed to represent the frequency of each symbol as a proportion of the total frequency of all symbols associated with such…
System and method for mitigating and/or avoiding noise for input devices and input objects
Granted: July 9, 2024
Patent Number:
12032786
A method is provided. The method comprises: providing, by a control system of an input device, one or more first beacon signals to an input object; based, at least in part, on force data from the input object, detecting, by the control system, noise interference associated with providing at least one of the one or more first beacon signals to the input object; based, at least in part, on detecting the noise interference, altering, by the control system, a timing schedule for providing…
Activity-focused display synchronization
Granted: July 2, 2024
Patent Number:
12027141
This disclosure provides methods, devices, and systems for data synchronization. The present implementations more specifically relate to adjusting a rate at which display updates are output to a digital display based on an activity level associated with the digital display. For example, digital displays that render images with relatively little motion or user engagement may be associated with lower activity levels, whereas digital displays that render images with more significant motion…
Fingerprint sensor housing with non-uniform thickness
Granted: July 2, 2024
Patent Number:
12026971
A sensor assembly includes a cover layer and a first sensor apparatus. The cover layer is molded from a first material to have a planar surface and non-uniform thickness, where a thickness of the first material at a first region of the cover layer is less than a thickness of the first material surrounding the first region. The first sensor apparatus is disposed beneath the planar surface of the cover layer, within the first region. The first sensor apparatus is configured to transmit and…
Word based channels last ordering in memory
Granted: July 2, 2024
Patent Number:
12026396
A memory device includes a first word and a second word. The first word has a first subset of a plurality of elements. The first subset of the plurality of elements each have a first set of sequential index values along a first dimension of a tensor, a first single index value for a second dimension of the tensor, and a second single index value for a third dimension of the tensor. The second word has a second subset of the plurality of elements. The second subset of the plurality of…
Quadrature clock generator with duty cycle corrector
Granted: July 2, 2024
Patent Number:
12026009
Quadrature clock generation circuits and techniques are disclosed. An example quadrature clock generator includes an in-phase (I) clock generation circuit to generate an I clock signal based on a reference clock signal, the I clock signal and the reference clock signal each having a first frequency, a quadrature phase (Q) clock generation circuit to generate a Q clock signal based on the reference clock signal, a rise time control signal, and a fall time control signal, the Q clock…
System and method for variable area-based compensation of burn-in in display panels
Granted: June 25, 2024
Patent Number:
12020666
A display driver that includes image processing circuitry and a source driver. The image processing circuitry is configured to perform a burn-in compensation to determine a first compensated luminance value for a first pixel in a first area of a display panel based at least in part on a first accumulated luminance value for the first pixel. The first area has a first pixel layout. The image processing circuitry is further configured to scale a second accumulated luminance value for a…
Low ground mass mitigation for pens
Granted: June 25, 2024
Patent Number:
12019832
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…
Video compression based on spatial-temporal features
Granted: June 11, 2024
Patent Number:
12010332
This disclosure provides methods, devices, and systems for video compression. The present implementations more specifically relate to video compression techniques that account for spatial-temporal changes in pixel values. In some aspects, an encoder may determine a change importance factor (CIF) for each image tile of a current image to be encoded. The encoder may calculate the CIF for an image tile of the current image (the “current image tile”) based on a degree of variation among…
Image processing system for region-of-interest-based video compression
Granted: May 21, 2024
Patent Number:
11991371
An apparatus for remote processing of raw image data receives the raw image data from a camera, such as a security camera. The apparatus includes a detection module to detect portions of the image data that contain possible regions of interest. Information indicating the portions that contain the possible regions of interest is then used during a compression process so that the portions that contain the possible regions of interest are compressed using one or more compression algorithms…
Capacitive knob sensing system and method using transparent sensing
Granted: May 14, 2024
Patent Number:
11983338
A system for using a transparent conductive material layer for a knob interface is provided. The system comprises: the knob interface comprising a fixed base and one or more knob interface electrodes; the transparent conductive material layer configured to electrically couple the subset of the plurality of grid electrodes to the one or more knob interface electrodes; and a processing system. The processing system is configured to: drive the plurality of grid electrodes with one or more…
