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    Devices with displays having transparent openings and uniformity correction
    1.
    发明授权
    Devices with displays having transparent openings and uniformity correction 有权

    公开(公告)号：US12148370B2

    公开(公告)日：2024-11-19

    申请号：US18481119

    申请日：2023-10-04

    Applicant: Apple Inc.

    Inventor： Lingtao Wang ,  Yingying Tang ,  Scott R. Johnston ,  Chaohao Wang ,  Sheng Zhang ,  Woo Shik Jung

    IPC: G09G3/3225

    Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The electronic device may include a plurality of transparent windows that overlap the optical sensor. The resolution of the display panel may be reduced in some areas due to the presence of the transparent windows. To prevent a visible border between the reduced resolution areas of the display and full resolution areas of the display, uniformity compensation circuitry may be used to compensate pixel data. The uniformity compensation circuitry may output compensated pixel data for the display using one or more compensation maps that include compensation factors associated with pixel locations. The uniformity compensation circuitry may also use region-specific gamma look-up tables to apply different gamma curves to pixels in different regions of the display. The uniformity compensation circuitry may also be used to form a transition region between different regions of the display.

    Pixel leakage and internal resistance compensation systems and methods
    3.
    发明授权
    Pixel leakage and internal resistance compensation systems and methods 有权

    公开(公告)号：US11170690B2

    公开(公告)日：2021-11-09

    申请号：US17003730

    申请日：2020-08-26

    Applicant: Apple Inc.

    Inventor： Adria Fores Herranz ,  Chaohao Wang ,  Jun Li ,  Koorosh Aflatooni ,  Pierre-Yves Emelie ,  Sheng Zhang ,  Yingying Tang ,  Yunhui Hou

    IPC: G09G3/20 ,  G09G5/10

    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 input image data, in a first color space, having luminance values for each of the sub-pixels. The circuitry may also map the input image data from the first color space to a second color space and apply a multi-dimensional lookup table, based on the input image data in the second color space, to generate compensated image data. The lookup table may receive the luminance values for each of the sub-pixels and output corrected luminance values compensated for an expected amount of current leakage between the sub-pixels. The circuitry may also inversely map the compensated image data from the second color space to the first color space to generate the processed image data.

    Electronic devices having displays with peripheral luminance compensation
    6.
    发明授权
    Electronic devices having displays with peripheral luminance compensation 有权

    公开(公告)号：US11348554B1

    公开(公告)日：2022-05-31

    申请号：US17002680

    申请日：2020-08-25

    Applicant: Apple Inc.

    Inventor： Yingying Tang ,  Chaohao Wang ,  Wei H. Yao

    IPC: G09G5/10 ,  G06T1/20

    Abstract: An electronic device may have a display. A protective display cover layer for the display may tend to dim pixels near the edge of the display. Control circuitry in the electronic device may boost luminance for pixels in an edge region of a displayed image relative to a center region of the image. This ensures that image brightness does not vary across the image. The control circuitry may include a graphics processing unit, a pixel pipeline implemented in a system-on-chip circuit block, and a display drive circuit block. Luminance compensation may be implemented in the system-on-chip block and/or in the display driver circuit block.

    Displays with variable frame rates
    8.
    发明授权
    Displays with variable frame rates 有权

    公开(公告)号：US12131719B2

    公开(公告)日：2024-10-29

    申请号：US17887222

    申请日：2022-08-12

    Applicant: Apple Inc.

    Inventor： Wanqing Xin ,  Mehmet N Agaoglu ,  Gokhan Avkarogullari ,  Jenny Hu ,  Alexander K Kan ,  Yuhui Li ,  James R Montgomerie ,  Andrey Pokrovskiy ,  Yingying Tang ,  Chaohao Wang

    IPC: G09G5/36

    CPC classification number: G09G5/363 ,  G09G2340/0435 ,  G09G2370/04 ,  G09G2370/22

    Abstract: An electronic device may include a display. Control circuitry may operate the display at different frame rates such as 60 Hz, 80 Hz, and 120 Hz. The control circuitry may determine which frame rate to use based on a speed of animation on the display and based on a type of animation on the display. To mitigate the appearance of judder as the display frame rate changes, the control circuitry may implement techniques such as hysteresis (e.g., windows of tolerance around speed thresholds to ensure that the display frame rate does not change too frequently as a result of noise), speed thresholds that are based on a user perception study, consistent latency between touch input detection and corresponding display output across different frame rates (e.g., using a fixed touch scan rate that is independent of frame duration), and animation-specific speed thresholds for triggering frame rate changes.

    Devices with Displays Having Transparent Openings and Uniformity Correction
    9.
    发明公开
    Devices with Displays Having Transparent Openings and Uniformity Correction 审中-公开

    公开(公告)号：US20240038158A1

    公开(公告)日：2024-02-01

    申请号：US18481119

    申请日：2023-10-04

    Applicant: Apple Inc.

    Inventor： Lingtao Wang ,  Yingying Tang ,  Scott R. Johnston ,  Chaohao Wang ,  Sheng Zhang ,  Woo Shik Jung

    IPC: G09G3/3225

    CPC classification number: G09G3/3225 ,  G09G2320/0233 ,  G09G2300/0443 ,  G09G2360/144 ,  G09G2320/0673

    Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The electronic device may include a plurality of transparent windows that overlap the optical sensor. The resolution of the display panel may be reduced in some areas due to the presence of the transparent windows. To prevent a visible border between the reduced resolution areas of the display and full resolution areas of the display, uniformity compensation circuitry may be used to compensate pixel data. The uniformity compensation circuitry may output compensated pixel data for the display using one or more compensation maps that include compensation factors associated with pixel locations. The uniformity compensation circuitry may also use region-specific gamma look-up tables to apply different gamma curves to pixels in different regions of the display. The uniformity compensation circuitry may also be used to form a transition region between different regions of the display.

    Displays with content-dependent brightness adjustment
    10.
    发明授权
    Displays with content-dependent brightness adjustment 有权

    公开(公告)号：US11295703B2

    公开(公告)日：2022-04-05

    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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