-
公开(公告)号：US20250104668A1
公开(公告)日：2025-03-27
申请号：US18474957
申请日：2023-09-26
Applicant: Apple Inc.
Inventor： Pradeep Nagesh , Mahesh B Chappalli , Alexey Kornienko
Abstract: Systems and techniques described herein may correct for chromatic deviations due to ambient dependent color perception in low-light conditions and/or bright-light conditions. Processing circuitry may determine a first and a second strength parameter based on an ambient brightness value, an intended display brightness value, one or more vectors, and a two-dimensional look up table. If the first strength parameter is greater than zero, then the processing circuitry may apply chromatic corrections based on luminance and chrominance compensation functions in an opponent color space. For example, per-pixel gains may be determined based on global curves and applied as a function of pixel value (e.g., luminance component). If the first strength parameter is less than zero and the second strength parameter is greater than zero, the processing circuitry may determine chromatic corrections based on a three-dimensional lookup table that may be programmable based on a strength parameter and/or a gain value.
-
公开(公告)号：US12154487B2
公开(公告)日：2024-11-26
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
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：US12027105B1
公开(公告)日：2024-07-02
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
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：US11984091B2
公开(公告)日：2024-05-14
申请号：US17839213
申请日：2022-06-13
Applicant: Apple Inc.
Inventor： Peter F Holland , Mahesh B Chappalli
IPC: G09G3/36
CPC classification number: G09G3/3614 , G09G2320/041 , G09G2320/0626 , G09G2330/023 , G09G2340/0435 , G09G2360/12
Abstract: Systems, methods, and devices are provided to selectively perform a frame replay at various stages of an image processing pipeline for an electronic display. Image processing circuitry may include first compensation circuitry that compensates for a first compensation factor relating to a first physical parameter of an electronic display and second compensation circuitry that compensates for a second compensation factor relating to a second physical parameter of the electronic display. A first tap point that enables the image frame to be stored and reused may be located between the first compensation circuitry and the second compensation circuitry, while a second tap point may be located after the second compensation circuitry.
-
公开(公告)号：US20240078982A1
公开(公告)日：2024-03-07
申请号：US17983317
申请日：2022-11-08
Applicant: Apple Inc.
Inventor： Vincent Z Young , Mahesh B Chappalli , Bartosz Ciechanowski
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.
-
Patent Agency Ranking
公开(公告)号：US20240078648A1
公开(公告)日：2024-03-07
申请号：US18101957
申请日：2023-01-26
Applicant: Apple Inc.
Inventor： Alexey Kornienko , Mahesh B Chappalli
CPC classification number: G06T5/009 , G06T5/20 , G06T5/40 , G06V10/60 , G06V10/751 , G06V10/758
Abstract: This disclosure is directed towards tone mapping systems and methods that preserve contrast of fine features of an image and avoid brightening monotonic regions of the image. To preserve contrast and avoiding brightening of the monotonic regions, an image processing circuitry may include hardware that enables determining pixel statistics of an image, generating a tone mapping that is configured to adjust the color values of pixels in the image, and applying the tone mapping to at least the low frequency component of the image to produce an output image where the contrast of the fine details is preserved. In addition, the image processing circuitry may include hardware that enables adjusting the tone mapping based on variance bins in a histogram of pixel values and applying the adjusted tone mapping to produce an output image where the monotonic regions are not brightened.
-
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.
-
公开(公告)号：US12211457B1
公开(公告)日：2025-01-28
申请号：US18475077
申请日：2023-09-26
Applicant: Apple Inc.
Inventor： Mahesh B Chappalli , Alexey Kornienko
Abstract: A device may include an electronic display having multiple illuminators that generate light at a first wavelength and a quantum dot layer that converts a portion of the light from the first wavelength to a second wavelength. The first wavelength may vary based on a brightness level of the illuminator, and the amount of light generated by the illuminator that is converted to the second wavelength may vary based on the first wavelength. The electronic display may also include a display pixel to regulate the light emitted from the electronic display at a pixel location based on compensated image data. The device may also include image processing circuitry to determine a luminance contribution to the light from the illuminator for the pixel location, determine per color component compensation values based on the luminance contribution, and generate the compensated image data based on the per color component compensation values.
-
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.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.015 seconds)
