-
公开(公告)号：US10068548B1
公开(公告)日：2018-09-04
申请号：US15614294
申请日：2017-06-05
Applicant: Apple Inc.
Inventor： Jim Chou , Koorosh Aflatooni , Marc Albrecht , Myung-Je Cho , Hyunwoo Nho , Christopher P. Tann , Mahesh B. Chappalli , Guy Côté
Abstract: Systems and methods for improving perceived image quality of an electronic display, which includes a co-located sub-pixel that controls luminance of a first color component and an offset sub-pixel that controls luminance of a second color component. A display pipeline communicatively coupled to the electronic display determines image data, which indicates target luminance of the first, the second, and a third color component at an image pixel; determines edge parameters, which indicate whether an edge is expected to be present at the offset sub-pixel, based on a difference metric between a first image pixel block around the offset sub-pixel and a second image pixel block offset from the first image pixel block; and determines offset sub-pixel image data by filtering an image pixel group around the offset sub-pixel based at least in part on the edge parameters, wherein the offset sub-pixel image data indicates target luminance of the offset sub-pixel.
-
公开(公告)号：US20170092228A1
公开(公告)日：2017-03-30
申请号：US14871869
申请日：2015-09-30
Applicant: Apple Inc.
Inventor： Guy Cote , Mahesh B. Chappalli , Venu M. Duggineni
IPC: G09G5/10 , G09G5/30 , G09G3/3225
CPC classification number: G09G5/10 , G09G3/20 , G09G3/3225 , G09G3/3406 , G09G5/30 , G09G2320/062 , G09G2320/0626 , G09G2320/0673 , G09G2360/12 , G09G2360/144 , G09G2360/148 , G09G2360/16
Abstract: An electronic display includes a display side and an ambient light sensor configured to measure received light received through the display side. The electronic display also includes multiple pixels located between the display side and the ambient light sensor. The multiple pixels are configured to emit display light through the display side.
-
13.发明申请公开(公告)号：US20250076111A1
公开(公告)日：2025-03-06
申请号：US18411987
申请日：2024-01-12
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli , Ionut A. Mirel , Yan Guan , Akshay Bhat
Abstract: To mitigate undesirable outcomes due to crosstalk in an ambient light sensor reading resulting from light emission from an electronic display, statistics may be gathered to determine and compensate for the crosstalk. For example, the ambient light sensor may detect ambient light levels while the electronic display is temporarily paused to reduce or eliminate crosstalk between the light produced by the electronic display and the ambient light sensor. However, the ambient light sensor may retain charge from a previous light emission, creating back-emission crosstalk. The ratio of back-emission to front-emission (e.g., present light emission) may not be linear, and the degree of nonlinearity may vary with pixel value, color component, display brightness, temperature, and so on. As the ambient light sensor is affected by back-emission, compensation for the nonlinearity between the front-emission and the back-emission may be obtained to estimate the crosstalk induced on the ambient light sensor.
-
公开(公告)号：US20240404445A1
公开(公告)日：2024-12-05
申请号：US18328661
申请日：2023-06-02
Applicant: Apple Inc.
Inventor： Vincent Z. Young , Mahesh B. Chappalli , Maofeng Yang , Weijun Yao
Abstract: An electronic device may include a display panel comprising a plurality of display pixels, an image source configured to store image data, and image processing circuitry. The image processing circuitry may receive the image data configured to be displayed by the plurality of display pixels, wherein the image data comprises gray level data for a first display pixel of the plurality of display pixels, convert the gray level data to first voltage data, and select a plurality of compensation maps based on a brightness level of the display panel. The image processing circuitry may also determine a voltage offset value based on the input voltage and the plurality of compensation maps, apply the voltage offset value to the first voltage data to generate compensated voltage data, and convert the compensated voltage data into compensated gray level data for the first display pixel.
-
公开(公告)号：US11893419B2
公开(公告)日：2024-02-06
申请号：US17149422
申请日：2021-01-14
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli
CPC classification number: G06F9/5016 , G06F9/485 , G06F9/4812 , G06F9/4881
Abstract: Methods and systems include processors and hardware accelerators. The processor initiates a first process in a first hardware accelerator configured to aid the processor in performing the first process. The processor initiates the first process using one or more interface registers. The processor performs additional processing while the first hardware accelerator performs the first process after initiation of the first process. The processor also initiates a second process in a second hardware accelerator configured to aid the processor in performing a second process. Moreover, the processor initiates the second process using the one or more interface registers.
-
Patent Agency Ranking
公开(公告)号：US11790870B2
公开(公告)日：2023-10-17
申请号：US17940835
申请日：2022-09-08
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli
CPC classification number: G09G5/10 , G09G3/2003 , G09G2310/0237 , G09G2320/0233
Abstract: A processor or other circuitry may obtain emissive element strength information for an array of emissive elements of an electronic display. The processor or other circuitry may reconstruct backlight information at multiple locations within the electronic display. The processor or other circuitry also compensates display of image data based at least in part on the reconstructed backlight information.
-
公开(公告)号：US20230005450A1
公开(公告)日：2023-01-05
申请号：US17940835
申请日：2022-09-08
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli
Abstract: A processor or other circuitry may obtain emissive element strength information for an array of emissive elements of an electronic display. The processor or other circuitry may reconstruct backlight information at multiple locations within the electronic display. The processor or other circuitry also compensates display of image data based at least in part on the reconstructed backlight information.
-
公开(公告)号：US20220068238A1
公开(公告)日：2022-03-03
申请号：US17149415
申请日：2021-01-14
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli
Abstract: A processor or other circuitry may obtain emissive element strength information for an array of emissive elements of an electronic display. The processor or other circuitry may reconstruct backlight information at multiple locations within the electronic display. The processor or other circuitry also compensates display of image data based at least in part on the reconstructed backlight information.
-
公开(公告)号：US20220067885A1
公开(公告)日：2022-03-03
申请号：US17149425
申请日：2021-01-14
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli , Vincent Z. Young
Abstract: Methods and systems include receiving, at de-ringing circuitry of a display pipeline of an electronic device, scaled image content based on image data. The de-ringing circuitry also receives a fallback scaler output. The de-ringing circuitry determines whether the image data has a change frequency greater than a threshold. In response to the change frequency being above the threshold, the de-ringing circuitry determines a weight. Based at least in part on the weight, the de-ringing circuitry blends the scaled image content and the fallback scaler output based at least in part on the weight.
-
公开(公告)号：US11164541B2
公开(公告)日：2021-11-02
申请号：US16711322
申请日：2019-12-11
Applicant: Apple Inc.
Inventor： Peter F. Holland , Mahesh B. Chappalli
Abstract: An electronic device may include an electronic display to display images during frames based on image data. The electronic display may be divided into multiple regions each having multiple pixels. The electronic device may also include a display pipeline to process the image data and output the processed image data to the electronic display. The display pipeline may also determine a history update corresponding to an estimated burn-in aging effect of the pixels based on usage. A first portion of the history update corresponding to pixels in a first region may be determined during a first frame and a second portion of the history update corresponding to pixels in a second region may be determined during a second frame.
-
-
-
-
-
-
-
-
-
Search Results
78
records
(took 0.021 seconds)
