公开(公告)号：US12118962B2

公开(公告)日：2024-10-15

申请号：US17983317

申请日：2022-11-08

Applicant: Apple Inc.

Inventor： Vincent Z Young ,  Mahesh B Chappalli ,  Bartosz Ciechanowski

IPC: G09G5/00 ,  G06T3/606 ,  G09G5/28

CPC classification number: G09G5/28 ,  G06T3/606 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2340/0457

Abstract: This disclosure is directed toward systems and methods of pre-multiplied alpha handling during image processing operations. The image processing circuitry may include hardware that enables removal and insertion of pre-multiplied alpha content into red, green, blue (RGB) pixel values during gamma and scaling operations. The division by alpha and multiplication by alpha hardware may enable removal of pre-multiplied alpha content to RGB pixel values prior to gamma operations and insertion of pre-multiplied alpha content into RGB pixel values prior to scaling operations.

公开(公告)号：US20230368718A1

公开(公告)日：2023-11-16

申请号：US18296934

申请日：2023-04-06

Applicant: Apple Inc.

Inventor： Sunmin Jang ,  Mahdi Farrokh Baroughi ,  Saif Choudhary ,  Hopil Bae ,  Gautam Agrawal ,  Ionut A Mirel ,  Hari P Paudel ,  Haitao Li ,  Wei H Yao ,  Mahesh B Chappalli

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2007 ,  G09G3/32 ,  G09G2300/0426 ,  G09G2320/0626 ,  G09G2360/16 ,  G09G2320/02 ,  G09G2310/0264 ,  G09G2310/08

Abstract: To reduce image artifacts and non-uniformity associated with a display pixel of an electronic display, processing circuity may adjust a luminance value corresponding to a display pixel according to a per-pixel gain mask, a per-pixel anode mask, or both. To further correct for the non-uniformity, the processing circuitry may convert the luminance value to a digital code based on a curve associated with an anode on which the display pixel is located.

公开(公告)号：US12243465B2

公开(公告)日：2025-03-04

申请号：US18296934

申请日：2023-04-06

Applicant: Apple Inc.

Inventor： Sunmin Jang ,  Mahdi Farrokh Baroughi ,  Saif Choudhary ,  Hopil Bae ,  Gautam Agrawal ,  Ionut A Mirel ,  Hari P Paudel ,  Haitao Li ,  Wei H Yao ,  Mahesh B Chappalli ,  Young Don Bae

IPC: G09G3/20 ,  G09G3/32

Abstract: To reduce image artifacts and non-uniformity associated with a display pixel of an electronic display, processing circuity may adjust a luminance value corresponding to a display pixel according to a per-pixel gain mask, a per-pixel anode mask, or both. To further correct for the non-uniformity, the processing circuitry may convert the luminance value to a digital code based on a curve associated with an anode on which the display pixel is located.

公开(公告)号：US12211456B2

公开(公告)日：2025-01-28

申请号：US17934570

申请日：2022-09-22

Applicant: Apple Inc.

Inventor： Christopher P Tann ,  Mahesh B Chappalli ,  Alexey Kornienko

IPC: G09G3/34

Abstract: A device may include an electronic display to display an image frame based on first and second color component input image data. The electronic display may include a first illuminator to generate a first light at a first brightness level, a second illuminator to generate a second light of a different color at a second brightness level, a first set of pixel locations to emit the first light based on a first set of pixel values, and a second set of pixel locations to emit the second light based on a second set of pixel values. The electronic device may also include pixel contrast control circuitry that determines the first brightness level and the first set of pixel values based on the first color component input image data and determines the second brightness level and the second set of pixel values based on the second color component input image data.

公开(公告)号：US20240105131A1

公开(公告)日：2024-03-28

申请号：US17934570

申请日：2022-09-22

Applicant: Apple Inc.

Inventor： Christopher P Tann ,  Mahesh B Chappalli ,  Alexey Kornienko

IPC: G09G3/34

CPC classification number: G09G3/3413 ,  G09G3/342 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2320/0686

Abstract: A device may include an electronic display to display an image frame based on first and second color component input image data. The electronic display may include a first illuminator to generate a first light at a first brightness level, a second illuminator to generate a second light of a different color at a second brightness level, a first set of pixel locations to emit the first light based on a first set of pixel values, and a second set of pixel locations to emit the second light based on a second set of pixel values. The electronic device may also include pixel contrast control circuitry that determines the first brightness level and the first set of pixel values based on the first color component input image data and determines the second brightness level and the second set of pixel values based on the second color component input image data.

公开(公告)号：US10134348B2

公开(公告)日：2018-11-20

申请号：US14870798

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Guy Cote ,  Mahesh B Chappalli

IPC: G09G3/36 ,  G09G3/3225

Abstract: A method for adjusting the gain of a plurality of pixels across a display includes determining grid point gain adjustments for a plurality of grid points corresponding to coordinates across the display. The corresponding coordinates have a non-uniform spacing across the display. The method also includes determining uniformity gain adjustments for the plurality of pixels via interpolation with the grid point gain adjustments. The method also includes multiplying the uniformity gain adjustment for each pixel of the plurality of pixels by an input signal to the respective pixel. The drive strength supplied to the respective pixel is based at least in part on the input signal, and the drive strength supplied to each pixel is configured to control the light emitted from the respective pixel.

公开(公告)号：US12142219B1

公开(公告)日：2024-11-12

申请号：US18465978

申请日：2023-09-12

Applicant: Apple Inc.

Inventor： Tae-Wook Koh ,  Mahesh B Chappalli ,  Jared S Price ,  Vincent Z Young ,  Yifan Zhang

IPC: G09G5/10 ,  G09G3/3233

Abstract: An electronic device may include an electronic display having a pixel and that displays an image based on compensated image data. The electronic device may also include image processing circuitry communicatively coupled to the electronic display. The image processing circuitry may receive image data and determine a gain value for the pixel based on an aging value of the pixel that is based on previously displayed pixel values of the pixel. The image processing circuitry may also adjust the gain value based on a pixel value of the image data corresponding to the pixel to generate an updated gain value and adjust the pixel value of the image data based on the updated gain value to generate, at least in part, the compensated image data.

公开(公告)号：US12125436B1

公开(公告)日：2024-10-22

申请号：US18325451

申请日：2023-05-30

Applicant: Apple Inc.

Inventor： Tae-Wook Koh ,  Mahesh B Chappalli ,  Vincent Z Young ,  Yifan Zhang ,  Jared S Price

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0233 ,  G09G2320/041 ,  G09G2320/046

Abstract: An electronic device may include an electronic display having display pixels that display an image based on compensated image data. The electronic display may also include pixel drive circuitry that provides power to the display pixels in accordance with the compensated image data. Additionally, the electronic device may include burn-in compensation circuitry communicatively coupled to the electronic display that receives input image data and generates the compensated input image data based on the input image data, a pixel aging history corresponding to the display pixels, and a driver aging history corresponding to the pixel drive circuitry.

公开(公告)号：US20240304133A1

公开(公告)日：2024-09-12

申请号：US18180697

申请日：2023-03-08

Applicant: Apple Inc.

Inventor： Vincent Z Young ,  Mahesh B Chappalli ,  Tae-Wook Koh ,  Yifan Zhang ,  Jared S Price

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0233 ,  G09G2320/041 ,  G09G2320/046

Abstract: Image processing circuitry may include burn-in compensation circuitry that receives image data indicative of luminance outputs for display pixels of an electronic display and compensates the image data for burn-in related aging associated with the display pixels, generating compensated image data. Moreover, compensating the image data may include applying gains based on estimated amounts of aging associated with the display pixels and estimated amounts of current to be delivered to the display pixels. The image processing circuitry may also include burn-in statistics circuitry that tracks the estimated amounts of aging based on the compensated image data.

公开(公告)号：US11893185B2

公开(公告)日：2024-02-06

申请号：US17903819

申请日：2022-09-06

Applicant: Apple Inc.

Inventor： Salman Latif ,  Si Mohamed Aziz Sbai ,  Mahesh B Chappalli ,  Marc J DeVincentis ,  Timothy M Henigan ,  Sanjay Mani ,  Rohit Natarajan ,  Paolo Sacchetto ,  Rohit K Gupta ,  Meir Harar

IPC: G06F3/041 ,  G06F3/044 ,  G06F11/34

CPC classification number: G06F3/0418 ,  G06F3/0445 ,  G06F11/3438

Abstract: Systems, methods, and devices are described that may mitigate pixel and touch crosstalk noise. A touch processing system may compensate touch scan data to reduce the noise based on a luminance value. An image processing system may determine the luminance value based on image data and a display brightness value of an electronic display. Using the compensated touch scan data, the touch processing system may determine a proximity of a capacitive object to at least one touch sense region of the electronic display.