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公开(公告)号：US11094038B1
公开(公告)日：2021-08-17
申请号：US17074254
申请日：2020-10-19
Applicant: Apple Inc.
Inventor： Alexey Kornienko
Abstract: An electronic device may include an electronic display to display an image based on scaled image data and variable scaling circuitry to generate the scaled image data. Generating the scaled image data may include receiving input pixel values in a first resolution and determining multiple tap point locations based on a scaling ratio to be applied to the input pixel values. Generating the scaled image data may also include determining weighting coefficients based on a scaling curve and the tap point locations, and weighting the input pixel values based on the weighting coefficients. The variable scaling circuitry may generate the scaled image data at a second resolution based on the aggregation of the weighted input pixel values.
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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：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.
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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：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.
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Patent Agency Ranking
公开(公告)号：US12236905B2
公开(公告)日：2025-02-25
申请号：US18452802
申请日：2023-08-21
Applicant: Apple Inc.
Inventor： Chengrui Le , Fang-Cheng Lin , Alexey Kornienko
Abstract: A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.
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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.
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公开(公告)号：US12026861B2
公开(公告)日：2024-07-02
申请号：US17362923
申请日：2021-06-29
Applicant: Apple Inc.
Inventor： Mahesh B. Chappalli , Alexey Kornienko
CPC classification number: G06T5/92 , G06T5/40 , G06T2207/20208
Abstract: Methods and systems include determining an upper boundary of brightness values of high-dynamic range image content. Using the determined upper boundary, end points of bins of histogram values are determined. Using the determined end points of the bins of histogram values, luma values are allocated to the bins. The high-dynamic range image content is processed based at least in part on the allocations to the bins. Image data including the processed high-dynamic range image content is displayed via an electronic display.
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公开(公告)号：US20240105132A1
公开(公告)日：2024-03-28
申请号：US18452802
申请日：2023-08-21
Applicant: Apple Inc.
Inventor： Chengrui Le , Fang-Cheng Lin , Alexey Kornienko
CPC classification number: G09G3/3413 , G09G3/342 , G09G3/36 , G09G2320/0646 , G09G2360/16
Abstract: A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.
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公开(公告)号：US11776492B1
公开(公告)日：2023-10-03
申请号：US17934568
申请日：2022-09-22
Applicant: Apple Inc.
Inventor： Chengrui Le , Fang-Cheng Lin , Alexey Kornienko
CPC classification number: G09G3/3413 , G09G3/342 , G09G3/36 , G09G2320/0646 , G09G2360/16
Abstract: A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.
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