DEVICE AND METHOD FOR FOVEATED RENDERING
Granted: February 9, 2023
Application Number:
20230038469
A display driver includes image processing circuitry and drive circuitry. The image processing circuitry is configured to receive a foveal image, a full frame image, and coordinate data that specifies a position of the foveal image in the full frame image. The image processing circuitry is further configured to render a resulting image based on the full frame image independently of the foveal image in response to detection of a data error within the coordinate data. The drive circuitry…
CORRECTING TOUCH INTERFERENCE FOR ACTIVE PEN
Granted: January 26, 2023
Application Number:
20230027365
A method of capacitive sensing includes obtaining a capacitive touch profile from multiple receiver electrodes disposed in a sensing region of an input device and obtaining an active pen profile, different from the capacitive touch profile, from the multiple receiver electrodes. The method also includes adjusting, using the capacitive touch profile, the active pen profile to obtain a corrected active pen profile and determining a position of an active pen in the sensing region, using the…
CORRECTING TOUCH INTERFERENCE FOR ACTIVE PEN
Granted: January 26, 2023
Application Number:
20230027365
A method of capacitive sensing includes obtaining a capacitive touch profile from multiple receiver electrodes disposed in a sensing region of an input device and obtaining an active pen profile, different from the capacitive touch profile, from the multiple receiver electrodes. The method also includes adjusting, using the capacitive touch profile, the active pen profile to obtain a corrected active pen profile and determining a position of an active pen in the sensing region, using the…
LOW POWER CONSUMPTION REGULATOR CIRCUITRY
Granted: January 12, 2023
Application Number:
20230009465
Regulator circuitry includes first to third output transistors, a first control transistor and a circuit stage. The first and second output transistors, and the first control transistor have a first channel conductivity type. The second output transistor has a second channel conductivity type. The first and second output transistors each have a drain coupled to an output node and a source coupled to a first power supply line. The third output transistor has a drain coupled to the output…
LOW POWER CONSUMPTION REGULATOR CIRCUITRY
Granted: January 12, 2023
Application Number:
20230009465
Regulator circuitry includes first to third output transistors, a first control transistor and a circuit stage. The first and second output transistors, and the first control transistor have a first channel conductivity type. The second output transistor has a second channel conductivity type. The first and second output transistors each have a drain coupled to an output node and a source coupled to a first power supply line. The third output transistor has a drain coupled to the output…
CAPACITIVE COMMUNICATION CHANNEL FOR AUXILIARY DEVICES
Granted: December 22, 2022
Application Number:
20220404940
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.
DEVICE AND METHOD FOR DRIVING A DISPLAY PANEL
Granted: December 8, 2022
Application Number:
20220392385
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…
DISPLAY DRIVER, IMAGE PROCESSING CIRCUITRY, AND METHOD
Granted: December 1, 2022
Application Number:
20220383797
A display driver that drives a display panel comprises storage circuitry, color addition processing circuitry, and drive circuitry. The storage circuitry stores F subpixel data acquired from color coordinate data indicating color coordinates of a displayed color in a predetermined color space displayed on the display panel when an R subpixel, a G subpixel, and a B subpixel in each of a plurality of pixels of the display panel are driven with drive signals corresponding to a minimum…
LOW GROUND MASS MITIGATION FOR PENS
Granted: November 10, 2022
Application Number:
20220357812
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…
TECHNOLOGIES FOR MOUNTING DISPLAY DRIVER INTEGRATED CIRCUIT CHIPS ON DISPLAY PANELS
Granted: October 20, 2022
Application Number:
20220338353
A display panel includes a plastic substrate and a first inner lead bonding (ILB) electrode on the plastic substrate. The first ILB electrode includes a first bonding segment, a second bonding segment, and a first connection segment. The first bonding segment is extended in a first direction oblique to a vertical direction of the display panel. The first connection segment is configured to provide an electrical connection between the first bonding segment and the second bonding segment.…
IMAGE COMPRESSION CIRCUITRY AND IMAGE COMPRESSION METHOD
Granted: October 13, 2022
Application Number:
20220329838
Image compression circuitry comprises first-stage compression circuitry, first-stage selector circuitry, second-stage compression circuitry, and second-stage selector circuitry. The first-stage compression circuitry is configured to sequentially receive a plurality of input blocks each comprising pixel data of a plurality of pixels, generate a plurality of first-stage compressed blocks by compressing the plurality of input blocks, and generate a plurality of first-stage decompressed…
BUILT-IN TEST OF A DISPLAY DRIVER
Granted: May 12, 2022
Application Number:
20220148470
A display driver includes image processing circuitry, driver circuitry, and test circuitry. The image processing circuitry is configured to generate first output data during a first display update period and generate second output data during a second display update period. The driver circuitry is configured to update a display panel based on the first output data during the first display update period and update the display panel based on the second output data during the second display…
SHORT-TERM NOISE SUPPRESSION
Granted: April 21, 2022
Application Number:
20220121298
A processing system is configured to drive a transmitter electrode with a repetitive multi-burst pattern. The repetitive multi-burst pattern includes a first multitude of bursts of a sensing waveform and a second multitude of bursts of the sensing waveform. The second multitude of bursts is a repetition of the first multitude of bursts. The processing system is further configured to receive, from a receiver electrode, a resulting signal in response to the repetitive multi-burst pattern,…
IR-DROP COMPENSATION FOR A DISPLAY PANEL INCLUDING AREAS OF DIFFERENT PIXEL LAYOUTS
Granted: April 14, 2022
Application Number:
20220114942
A display driver includes image processing circuitry and driver circuitry. The image processing circuitry is configured to process first image data for pixels of a display panel comprising a first region and a second region to generate output voltage data. The first region and the second region have different pixel layouts. The driver circuitry is configured to update the pixels based on the output voltage data. Processing the first image data comprises IR-drop compensation based on…
SINGLE LAYER CAPACITIVE IMAGING SENSORS
Granted: February 17, 2022
Application Number:
20220050551
A capacitive sensing layer of an input device includes a substantially rectangular sensor pattern extending in a horizontal direction and in a vertical direction, including first and second electrodes. Each of the first electrodes includes a strip extending in the vertical direction. The first electrodes are separated in the horizontal direction by first gaps. Each of the second electrodes includes a substantially rectangular pad, disposed adjacent to one of the first electrodes, in one…
LOW GROUND MASS CORRECTION FOR CAPACITIVE IMAGING SENSORS
Granted: February 17, 2022
Application Number:
20220050548
A capacitive sensing input system includes sensor electrodes disposed in a sensor electrode pattern and a processing system. When under a low ground mass (LGM) condition, proximity-sensing pairs of electrodes formed by a first selective pairing of the sensor electrodes have an increased sensitivity to a presence of an input object in comparison to LGM-sensitive pairs of electrodes formed by a second selective pairing of the sensor electrodes that are primarily sensitive to the LGM…
INPUT- DISPLAY DEVICE WITH SHARED MEMORY
Granted: December 30, 2021
Application Number:
20210405794
An input-display device includes a display screen on a display substrate and capacitive sensing electrodes for capacitive sensing in a sensing region of the display screen. The input-display device also includes a touch and display driver integration (TDDI) circuit on the display substrate, the TDDI circuit including a source driver circuit driving a subset of display pixels of the display screen based on a processed image signal, and an analog frontend for the capacitive sensing,…
REDUCING DISPLAY ARTIFACTS CAUSED BY A SENSING SIGNAL OF A PROXIMITY INPUT DEVICE
Granted: December 23, 2021
Application Number:
20210397297
An input device includes a display substrate and a stack of display layers disposed on the display substrate, the stack of display layers including a conductive layer. The input device further includes at least one capacitive sensing layer in the stack of display layers and a multitude of capacitive sensing electrodes disposed in the at least one capacitive sensing layer, and configured for capacitance sensing. The input device also includes a processing system configured to selectively…
DEVICE AND METHOD FOR DRIVING A SELF-LUMINOUS DISPLAY PANEL
Granted: December 16, 2021
Application Number:
20210390909
A display driver comprises gamma processing circuitry, compensation circuitry, and driver circuitry. The gamma processing circuitry is configured to process the image data to generate gamma processed image data. The compensation circuitry is configured to process the gamma-processed image data, based on a ratio of a number of display elements that emit light to a total number of display elements of a display panel, to generate compensated image data. The driver circuitry is configured to…
Device and Method for Image Processing in a Display Driver
Granted: November 18, 2021
Application Number:
20210358375
A display driver comprises image processing circuitry and driver circuitry. The image processing circuitry is configured to receive spatial distribution information of a physical quantity related to a display panel. The image processing circuitry is further configured to generate output voltage data by processing input pixel data associated with subpixels of the pixel. The drive circuitry is configured to drive the display panel based on the output voltage data.
