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公开(公告)号:US20210020140A1
公开(公告)日:2021-01-21
申请号:US16926545
申请日:2020-07-10
Applicant: Apple Inc.
Inventor: Yang Li , Yingying Tang , Chaohao Wang , Wei H. Yao
IPC: G09G5/10
Abstract: An electronic device may be provided with an ambient light sensor, a display that displays image content, and control circuitry. The control circuitry may adjust a peak allowable brightness of the display based on an ambient light brightness and based on the image content being displayed. For example, the control circuitry may analyze frames of display data to determine an average pixel luminance level. Low average pixel luminance levels correspond to mostly dark image content, whereas high average pixel luminance levels correspond to mostly light image content. When an electronic device is outdoors and displaying mostly dark images with low average pixel luminance levels, the control circuitry may take advantage of the display's maximum achievable brightness to improve readability. When an electronic device is outdoors and displaying mostly light images with high average pixel luminance levels, the control circuitry may scale the maximum allowable brightness down to reduce power consumption.
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公开(公告)号:US20190180669A1
公开(公告)日:2019-06-13
申请号:US15944470
申请日:2018-04-03
Applicant: Apple Inc.
Inventor: Hung Sheng Lin , Paolo Sacchetto , Yingying Tang , Hyunwoo Nho , Sebastian Knitter , Chaohao Wang , Sheng Zhang
Abstract: An electronic device that includes processing circuitry configured to generate a frame of image data that has a frame duration is provided. The electronic device includes a display that has a plurality of pixels. Each of the plurality of pixels displays image data from the frame of image data for a pixel emission period that is less than the frame duration. A first pixel of a column of pixels of the plurality of pixels begins displaying the image data from the frame of image data at a first time for a first duration. A second pixel of the column of pixels that is adjacent to the first pixel begins displaying the image data from the frame of image data at a second time for a second duration. The first and second durations are equal to the pixel emission period. The second time begins after the first duration of time.
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公开(公告)号:US12230191B2
公开(公告)日:2025-02-18
申请号:US18076363
申请日:2022-12-06
Applicant: Apple Inc.
Inventor: Wanqing Xin , Yang Xu , Mohammad Ali Jangda , Jenny Hu , Koorosh Aflatooni , Giovanni Corradini , Martin Kocicka , Alexey Kornienko , Asha G Karvaje , Aishwarya Prem Renu , Andrew D Pangborn , Chaohao Wang , Yingying Tang , Arthur L Spence , Mahesh B Chappalli
IPC: G09G3/32
Abstract: Systems and methods are described herein to control brightness based on image content or other inputs to a display system. A dual-control system may integrate both slow control operations and fast control operations into a cohesive brightness management system. By using both shorter-term (e.g., fast control) and longer-term (e.g., slow control) brightness adjustment operations, the electronic device may quickly respond to high luminance and high brightness situations that may cause burn-in into the display, image artifacts, or other damage. Responding quickly to these high consumption situations may prevent damage or perceivable upset to an ongoing process, among other benefits.
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公开(公告)号:US12154480B2
公开(公告)日:2024-11-26
申请号:US18184592
申请日:2023-03-15
Applicant: Apple Inc.
Inventor: Jenny Hu , Chaohao Wang , Christopher E Glazowski , Clint M Perlaki , David R Manly , Feng Wen , Graeme M Williams , Hei Kam , Hyun H Boo , Kevin J Choboter , Kyounghwan Kim , Lu Yan , Mahesh B Chappalli , Mark T Winkler , Na Zhu , Peter F Holland , Tong Chen , Warren S Rieutort-Louis , Wenrui Cai , Ximeng Guan , Yingying Tang , Yuchi Che
IPC: G09G3/3233 , G06F3/042 , G09G3/20 , G09G3/34 , G06F3/041
Abstract: A light emitter that operates through a display may cause display artifacts, even when the light emitter operates using non-visible wavelengths. Display artifacts caused by a light emitter that operates through a display may be referred to as emitter artifacts. To mitigate emitter artifacts, operating conditions for a display frame may be used to determine an optimal firing time for the light emitter during that display frame. The operating conditions used to determine the optimal firing time may include emitter operating conditions, display content statistics, display brightness, temperature, and refresh rate. Operating conditions from one or more previous frames may be stored in a frame buffer and may be used to help determine the optimal firing time for the light emitter during a display frame. Pixel values for the display may be modified to mitigate emitter artifacts.
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公开(公告)号:US20240078961A1
公开(公告)日:2024-03-07
申请号:US18076363
申请日:2022-12-06
Applicant: Apple Inc.
Inventor: Wanqing Xin , Yang Xu , Mohammad Ali Jangda , Jenny Hu , Koorosh Aflatooni , Giovanni Corradini , Martin Kocicka , Alexey Kornienko , Asha G Karvaje , Aishwarya Prem Renu , Andrew D Pangborn , Chaohao Wang , Yingying Tang , Arthur L Spence , Mahesh B Chappalli
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2310/08 , G09G2320/0295 , G09G2320/046 , G09G2320/0613 , G09G2320/0626 , G09G2320/103 , G09G2330/023 , G09G2360/144 , G09G2360/16
Abstract: Systems and methods are described herein to control brightness based on image content or other inputs to a display system. A dual-control system may integrate both slow control operations and fast control operations into a cohesive brightness management system. By using both shorter-term (e.g., fast control) and longer-term (e.g., slow control) brightness adjustment operations, the electronic device may quickly respond to high luminance and high brightness situations that may cause burn-in into the display, image artifacts, or other damage. Responding quickly to these high consumption situations may prevent damage or perceivable upset to an ongoing process, among other benefits.
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公开(公告)号:US20230410718A1
公开(公告)日:2023-12-21
申请号:US18184592
申请日:2023-03-15
Applicant: Apple Inc.
Inventor: Jenny Hu , Chaohao Wang , Christopher E Glazowski , Clint M Perlaki , David R Manly , Feng Wen , Graeme M Williams , Hei Kam , Hyun H Boo , Kevin J Choboter , Kyounghwan Kim , Lu Yan , Mahesh B Chappalli , Mark T Winkler , Na Zhu , Peter F Holland , Tong Chen , Warren S Rieutort-Louis , Wenrui Cai , Ximeng Guan , Yingying Tang , Yuchi Che
CPC classification number: G09G3/2096 , G06F3/042 , G09G2360/16 , G09G2320/0295 , G06F3/0412
Abstract: A light emitter that operates through a display may cause display artifacts, even when the light emitter operates using non-visible wavelengths. Display artifacts caused by a light emitter that operates through a display may be referred to as emitter artifacts. To mitigate emitter artifacts, operating conditions for a display frame may be used to determine an optimal firing time for the light emitter during that display frame. The operating conditions used to determine the optimal firing time may include emitter operating conditions, display content statistics, display brightness, temperature, and refresh rate. Operating conditions from one or more previous frames may be stored in a frame buffer and may be used to help determine the optimal firing time for the light emitter during a display frame. Pixel values for the display may be modified to mitigate emitter artifacts.
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公开(公告)号:US11810534B1
公开(公告)日:2023-11-07
申请号:US16566530
申请日:2019-09-10
Applicant: Apple Inc.
Inventor: Yi Qiao , Jean-Pierre S. Guillou , Yingying Tang , Michael J. Brown , Paul C. Kelley , Tyler R. Kakuda , Hao Dong , Ying-Chih Wang , Chaohao Wang , Shaorui Yang , Wei H. Yao
CPC classification number: G09G5/37 , G06T1/20 , G06T5/006 , G06T7/70 , G09G3/3208 , G09G5/363 , G02B6/06 , G09G2320/0646
Abstract: An electronic device may have a display layer for displaying images. An optical coupling layer having an input surface that receives light from the display panel may convey the light from the input surface to an output surface. The output surface may have different dimensions than the display layer and may have any desired shape. To account for the displacement of light between the active area and the outer surface of the optical coupling layer and to ensure the output image is perceived with the desired distortion, image data may be rendered for the output surface then modified to account for the distortion and displacement that will occur later when the image is transported by the optical coupling layer from the display active area to the output surface of the optical coupling layer. Image distortion control circuitry may modify the rendered image data based on a distortion map.
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公开(公告)号:US11355049B2
公开(公告)日:2022-06-07
申请号:US17003757
申请日:2020-08-26
Applicant: Apple Inc.
Inventor: Chaohao Wang , Sheng Zhang , Yingying Tang , Yunhui Hou
Abstract: An electronic device may include an electronic display having multiple pixels to display an image based on processed image data. Each of the pixels may include multiple sub-pixels. The electronic device may also include image processing circuitry to receive first image data for a sub-pixel of the and second image data for a group of sub-pixels surrounding the sub-pixel. The first image data may include a luminance value for the sub-pixel and the second image data may include luminance values for each sub-pixel of the group. The image processing circuitry may also determine a compensation value, to compensate the luminance value for lateral current leakage between the sub-pixel and the group of sub-pixels, based on the luminance value of the sub-pixel and the luminance values for each sub-pixel of the group of sub-pixels.
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公开(公告)号:US20190244572A1
公开(公告)日:2019-08-08
申请号:US16265902
申请日:2019-02-01
Applicant: Apple Inc.
Inventor: Chengrui LE , Chaohao Wang , Li Tao , Lingyu Hong , Paolo Sacchetto , Sheng Zhang , Xiaokai Li , Yingying Tang , Yunhui Hou , Johan L. Piper
CPC classification number: G09G3/3406 , G09G3/342 , G09G3/36 , G09G2320/0247 , G09G2320/0261 , G09G2320/041 , G09G2320/0606 , G09G2320/062 , G09G2320/0633 , G09G2320/064 , G09G2320/0646 , G09G2320/103 , G09G2340/0435 , G09G2354/00 , G09G2360/16
Abstract: Aspects of the subject technology relate to pulsed backlight operation for a display backlight. Backlight pulse patterns are provided that include steady state pulse patterns to be applied during operation of a liquid crystal display unit of the display at a corresponding frame rate. The backlight pulse patterns can be arranged to prevent visible artifacts such as flicker or strobing, particularly at or near a transition between LCD frame rates. In some scenarios, transition pulse patterns are provided,
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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.
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