-
公开(公告)号：US20240177276A1
公开(公告)日：2024-05-30
申请号：US18437152
申请日：2024-02-08
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli , Vincent Z. Young
IPC: G06T5/70 , G06T1/20 , G06T3/4007 , G06T5/50
CPC classification number: G06T5/70 , G06T1/20 , G06T3/4007 , G06T5/50
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：US11823642B2
公开(公告)日：2023-11-21
申请号：US17752651
申请日：2022-05-24
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli , Christopher P. Tann , Peter F. Holland , Guy Côté , Stephan Lachowsky
CPC classification number: G09G5/005 , G09G3/006 , G09G3/22 , G09G5/001 , G09G5/02 , G09G2320/046 , G09G2320/048 , G09G2320/0626 , G09G2320/0673 , G09G2330/10
Abstract: An electronic display pipeline may process image data for display on an electronic display. The electronic display pipeline may include burn-in compensation statistics collection circuitry and burn-in compensation circuitry. The burn-in compensation statistics collection circuitry may collect image statistics based at least in part on the image data. The statistics may estimate a likely amount of non-uniform aging of the sub-pixels of the electronic display. The burn-in compensation circuitry may apply a gain to sub-pixels of the image data to account for non-uniform aging of corresponding sub-pixels of the electronic display. The applied gain may be based at least in part on the image statistics collected by the burn-in compensation statistics collection circuitry.
-
公开(公告)号：US11699377B2
公开(公告)日：2023-07-11
申请号：US17321073
申请日：2021-05-14
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli
CPC classification number: G09G3/2007 , G09G5/06 , G09G5/10 , G09G5/393 , G09G2320/041 , G09G2320/0626 , G09G2320/0693 , G09G2330/021 , G09G2340/16 , G09G2350/00 , G09G2360/122
Abstract: Image data for a current image frame may be compensated for transient response variations due to variations in display panel temperatures at various positions of the display panel by performing pixel drive compensation. The pixel drive compensation may be performed based at least in part upon display panel temperatures at various portions of the display panel. In this way, drive compensation corresponding to various temperature variations in a display panel may be implemented.
-
公开(公告)号：US11475865B2
公开(公告)日：2022-10-18
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：US11211036B2
公开(公告)日：2021-12-28
申请号：US16919495
申请日：2020-07-02
Applicant: Apple Inc.
Inventor： Brijesh Tripathi , Arthur L. Spence , Joshua P. de Cesare , Ilie Garbacea , Guy Cote , Mahesh B. Chappalli , Malcolm D. Gray , Christopher P. Tann
Abstract: Systems, apparatuses, and methods for implementing a timestamp based display update mechanism. A display control unit includes a timestamp queue for storing timestamps, wherein each timestamp indicates when a corresponding frame configuration set should be fetched from memory. At pre-defined intervals, the display control unit may compare the timestamp of the topmost entry of the timestamp queue to a global timer value. If the timestamp is earlier than the global timer value, the display control unit may pop the timestamp entry and fetch the frame next configuration set from memory. The display control unit may then apply the updates of the frame configuration set to its pixel processing elements. After applying the updates, the display control unit may fetch and process the source pixel data and then drive the pixels of the next frame to the display.
-
Patent Agency Ranking
公开(公告)号：US20210183333A1
公开(公告)日：2021-06-17
申请号：US16711319
申请日：2019-12-11
Applicant: Apple Inc.
Inventor： Peter F. Holland , Mahesh B. Chappalli , Yifan Zhang , Tae-Wook Koh
IPC: G09G5/10
Abstract: An electronic device may include an electronic display and a display pipeline. The electronic display may include multiple pixels to display images based at least in part on pixel data. The display pipeline may receive image data and process the image data to determine the pixel data. The display pipeline may include burn-in compensation circuitry to apply gains to the image data based at least in part on burn-in statistics to generate the pixel data. The gain to be applied to the image data for a pixel of the electronic display is determined by the burn-in compensation circuitry, based at least in part on an emission duty cycle of the pixel, to compensate the image data for the pixel for burn-in related aging of the pixel.
-
公开(公告)号：US10971079B2
公开(公告)日：2021-04-06
申请号：US16545975
申请日：2019-08-20
Applicant: Apple Inc.
Inventor： Peter F. Holland , Mahesh B. Chappalli
IPC: G09G3/20 , G09G3/3283 , G09G3/3233
Abstract: Image data for a current image frame may be compensated for transient response variations due to changes to pixel values from one frame to another over time by performing pixel drive compensation. The pixel drive compensation may be performed using a current pixel value and a historical pixel value. The historical pixel value may be the same as a pixel value in the directly previous frame in some conditions, while in other conditions the historical pixel value may be modified from a previous image frame in light of a prior pixel value occurring before the previous image frame. In this way, drive compensation corresponding to image data of a subsequent image frame may be determined based at least in part on a multi-frame history. Even so, the memory bandwidth and/or power consumed to use a multi-frame history to determine a drive compensation may be reduced.
-
公开(公告)号：US20190341007A1
公开(公告)日：2019-11-07
申请号：US15969539
申请日：2018-05-02
Applicant: Apple Inc.
Inventor： Peter F. Holland , Mahesh B. Chappalli , Assaf Menachem
Abstract: An electronic device may include a display panel and an image data source designed to determine a differing region in the image frame by comparing source image data and image data corresponding with a previous image frame. The electronic device may also include a display pipeline between the image data source and the display panel. The display pipeline may include image processing circuitry to convert image data from a source space to a display space and image processing circuitry to spatially process the image data. The display pipeline may determine a crop region by converting the differing region to the display space and determine a partial frame region, based on the image data to be spatially processed, by the image processing circuitry. The display pipeline may also determine and retrieve a fetch region smaller than the image frame by converting the partial frame region to the source space.
-
公开(公告)号：US20190080666A1
公开(公告)日：2019-03-14
申请号：US15861215
申请日：2018-01-03
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli , Christopher P. Tann , Peter F. Holland , Guy Côté , Stephan Lachowsky
Abstract: An electronic display pipeline may process image data for display on an electronic display. The electronic display pipeline may include burn-in compensation statistics collection circuitry and burn-in compensation circuitry. The burn-in compensation statistics collection circuitry may collect image statistics based at least in part on the image data. The statistics may estimate a likely amount of non-uniform aging of the sub-pixels of the electronic display. The burn-in compensation circuitry may apply a gain to sub-pixels of the image data to account for non-uniform aging of corresponding sub-pixels of the electronic display. The applied gain may be based at least in part on the image statistics collected by the burn-in compensation statistics collection circuitry.
-
公开(公告)号：US20190066569A1
公开(公告)日：2019-02-28
申请号：US15967892
申请日：2018-05-01
Applicant: Apple Inc.
Inventor： Yingying Tang , Chaohao Wang , Sheng Zhang , Yunhui Hou , Paolo Sacchetto , Koorosh Aflatooni , Gokhan Avkarogullari , Guy Cote , Mahesh B. Chappalli , Peter F. Holland
Abstract: An electronic device is provided. The electronic device includes a display that is configured to show content that includes a plurality of frames. The plurality of frames includes a first frame that is associated with a pre-transition value. The plurality of frames also includes a second frame that is associated with a current frame value that corresponds to a first luminance. Additionally, the electronic device is configured to determine an overdriven current frame value corresponding to a second luminance that is greater than the first luminance. The electronic device is also configured to display the second frame using the overdriven current frame value.
-
-
-
-
-
-
-
-
-
Search Results
78
records
(took 0.029 seconds)
