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公开(公告)号：US11893185B2
公开(公告)日：2024-02-06
申请号：US17903819
申请日：2022-09-06
Applicant: Apple Inc.
Inventor： Salman Latif , Si Mohamed Aziz Sbai , Mahesh B Chappalli , Marc J DeVincentis , Timothy M Henigan , Sanjay Mani , Rohit Natarajan , Paolo Sacchetto , Rohit K Gupta , Meir Harar
CPC classification number: G06F3/0418 , G06F3/0445 , G06F11/3438
Abstract: Systems, methods, and devices are described that may mitigate pixel and touch crosstalk noise. A touch processing system may compensate touch scan data to reduce the noise based on a luminance value. An image processing system may determine the luminance value based on image data and a display brightness value of an electronic display. Using the compensated touch scan data, the touch processing system may determine a proximity of a capacitive object to at least one touch sense region of the electronic display.
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公开(公告)号：US20250109985A1
公开(公告)日：2025-04-03
申请号：US18537783
申请日：2023-12-12
Applicant: Apple Inc.
Inventor： Ionut A Mirel , Mahesh B Chappalli , Maximillian C Bruggeman
Abstract: An electronic display includes an ambient light sensor (ALS) located beneath an active area to sense ambient light above the active area. The ALS is synchronized with blanking periods of a display pixel on the active area. An emission-off scale factor is calculated based on an emission profile of the display pixel when the display pixel is turned off. The emission-off scale factor is used with display content to calculate a crosstalk compensation for the ALS.
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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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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.
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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.
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Patent Agency Ranking
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.
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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.
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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：US12288512B1
公开(公告)日：2025-04-29
申请号：US18100858
申请日：2023-01-24
Applicant: Apple Inc.
Inventor： Francesco LaRocca , Aditya B Nayak , Anand K Chamakura , Christopher M Dodson , Guocheng Shao , Kenneth J Vampola , Mahesh B Chappalli , Reza Tafteh , Serhan O Isikman , Steven N Hanna
IPC: G09G3/3208
Abstract: An electronic display may include an ambient light sensor (ALS) located beneath an active area to sense ambient light above the active area. The ALS may have multiple response channels to perform fast sensing integration, which is synchronized with blanking periods of a pixel on the active area. An emission mask and a heat map may be generated for the ALS and used to generate a calibrated heat map for the ALS. The calibrated heat map of the ALS is used with display content to calculate a crosstalk compensation for the ALS.
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公开(公告)号：US20250111557A1
公开(公告)日：2025-04-03
申请号：US18895203
申请日：2024-09-24
Applicant: Apple Inc.
Inventor： Mahesh B Chappalli , Clement Moussu
Abstract: An electronic device having image processing circuitry to securely display secure content is provided. The image processing circuitry may include first image processing circuitry to process first image data in a first execution environment. The image processing circuitry may also include second image processing circuitry to process second image data in a second execution environment. The second execution environment may be a trusted execution environment to generate composite image data based on blending the processed first image data with the processed second image data such that the processed second image is always visible.
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