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    Pre-processing in a display pipeline
    32.
    发明授权
    Pre-processing in a display pipeline 有权

    公开(公告)号：US12200184B2

    公开(公告)日：2025-01-14

    申请号：US18392938

    申请日：2023-12-21

    Applicant: Apple Inc.

    Inventor： Sheng Zhang ,  Chaohao Wang ,  Yue Ma

    IPC: H04N13/305 ,  G02B30/29 ,  G06F16/16 ,  G06T3/40 ,  G06T5/20 ,  G06T5/70 ,  G06T5/92 ,  G06T11/40 ,  G09G3/00 ,  G09G3/20 ,  H04N13/133 ,  H04N13/15 ,  H04N13/398 ,  H04N13/383

    Abstract: An electronic device may include a lenticular display. The lenticular display may have a lenticular lens film formed over an array of pixels. The display may have a number of independently controllable viewing zones. Each viewing zone displays a respective two-dimensional image. Each eye of the viewer may receive a different one of the two-dimensional images, resulting in a perceived three-dimensional image. The electronic device may include display pipeline circuitry that generates and processes content to be displayed on the lenticular display. Content generating circuitry may initially generate content that includes a plurality of two-dimensional images, each two-dimensional image corresponding to a respective viewing zone. Pre-processing circuitry may subsequently anisotropically resize each two-dimensional image. Pixel mapping circuitry may then be used to map the resized two-dimensional images to the array of pixels in the lenticular display.

    Optical system with ghost image mitigation
    34.
    发明授权
    Optical system with ghost image mitigation 有权

    公开(公告)号：US11885959B1

    公开(公告)日：2024-01-30

    申请号：US16550108

    申请日：2019-08-23

    Applicant: Apple Inc.

    Inventor： Wei-Liang Hsu ,  Sheng Zhang ,  Mark F. Flynn ,  Yury A. Petrov ,  Chaohao Wang

    IPC: G02B27/28 ,  G02B27/00 ,  G02B5/00 ,  G02B13/00 ,  G02B1/115

    CPC classification number: G02B27/0018 ,  G02B1/115 ,  G02B5/003 ,  G02B13/002

    Abstract: An electronic device may include a display system with a pixel array and a catadioptric lens. The display system may include a linear polarizer through which image light from the pixel array passes and a first quarter wave plate through which the light passes after passing through the polarizer. The lens may include a partial mirror, a second quarter wave plate, and a reflective polarizer. A third quarter wave plate may be formed between the linear polarizer and the pixel array to mitigate ghost images. Control circuitry may predict potential ghost images based on the geometry of the lens and data from an image frame. Tone mapping circuitry may adjust contrast of the image frame within a region overlapping the predicted ghost image. The control circuitry may adjust luminance of the image frame outside of the region overlapping the predicted ghost image.

    Displays with Viewer Tracking for Vertical Parallax Correction
    35.
    发明公开
    Displays with Viewer Tracking for Vertical Parallax Correction 审中-公开

    公开(公告)号：US20240031554A1

    公开(公告)日：2024-01-25

    申请号：US18478701

    申请日：2023-09-29

    Applicant: Apple Inc.

    Inventor： Yi-Pai Huang ,  Yang Li ,  Yi Huang ,  Pretesh A Mascarenhas ,  Menelik Baye Yimam ,  Guru Moorthy Ravi ,  Yunhui Hou ,  Fu-Chung Huang ,  Sheng Zhang

    IPC: H04N13/383 ,  H04N13/305 ,  H04N13/38

    CPC classification number: H04N13/383 ,  H04N13/305 ,  H04N13/38

    Abstract: An electronic device may include a stereoscopic display with a plurality of lenticular lenses that extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display such that a viewer perceives three-dimensional images. The display may have different viewing zones that account for horizontal parallax as a viewer moves horizontally relative to the display. The display may be dimmed globally based on the detected vertical position of the viewer. The magnitude of dimming applied to the display may increase with increasing deviation of the viewer from a baseline viewing angle. The display may render content that compensates for the real-time vertical position of the viewer. Another option for the stereoscopic display is to include a lens film that has an array of lenses. Each lens in the array of lenses spreads light in the horizontal direction and the vertical direction.

    Pixel leakage and internal resistance compensation systems and methods
    36.
    发明授权
    Pixel leakage and internal resistance compensation systems and methods 有权

    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

    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 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.

    Visual artifact mitigation of dynamic foveated displays
    37.
    发明授权
    Visual artifact mitigation of dynamic foveated displays 有权

    公开(公告)号：US11194391B2

    公开(公告)日：2021-12-07

    申请号：US16644920

    申请日：2018-08-30

    Applicant: Apple Inc.

    Inventor： Sheng Zhang ,  Chaohao Wang

    IPC: G06F3/01 ,  G09G3/20

    Abstract: The present disclosure relates to electronic devices that include displays that show dynamic foveated content. For example, portions of the content may be shown in different resolutions on different areas of the display based on a user's gaze that can be monitored with an eye tracker. Based on eye tracking data collected by the eye tracker, a processor of the electronic device may stop or slow the transmission of pixel data associated with one or more frames of the content. Additionally, the processor may generate pixel data such that the display may gradually transition from employing dynamic foveation to employing static foveation.

    Electronic devices with displays
    39.
    发明授权
    Electronic devices with displays 有权

    公开(公告)号：US10726811B2

    公开(公告)日：2020-07-28

    申请号：US16326665

    申请日：2017-08-14

    Applicant: Apple Inc.

    Inventor： Sheng Zhang ,  Bennett S. Wilburn ,  Paolo Sacchetto ,  Chaohao Wang ,  Cheng Chen ,  Enkhamgalan Dorjgotov

    IPC: G09G5/36 ,  G06F3/147 ,  G09G5/10 ,  G09G3/3225

    Abstract: An electronic device may have a display such as an organic light-emitting diode display. Electronic devices may also include a number of sensors such as accelerometers and gaze detection sensors. A graphics processing unit (GPU) may render digital pixel values for pixels in the device display. Frames (F2) with long rendering times may cause latency. To reduce latency, an image frame may be displayed for an extended period of time (68) to wait for the subsequent frame (F2) to finish rendering. Once the subsequent image frame (F2) has finished rendering, the subsequent image frame may be displayed without delay. To increase the lifespan of the display, variable persistence may be used. Sensor data and other factors may be used to dynamically determine persistence for minimal motion blur and maximum display lifespan. Sensor data may also be used to determine refresh rates for different portions of the display.

    Dynamic Image Stabilization Using Motion Sensors
    40.
    发明申请
    Dynamic Image Stabilization Using Motion Sensors 审中-公开

    公开(公告)号：US20190317659A1

    公开(公告)日：2019-10-17

    申请号：US16366503

    申请日：2019-03-27

    Applicant: Apple Inc.

    Inventor： Paul V. Johnson ,  Ahmad Rahmati ,  Chaohao Wang ,  Cheng Chen ,  Graham B. Myhre ,  Jiaying Wu ,  Paolo Sacchetto ,  Sheng Zhang ,  Yunhui Hou ,  Xiaokai Li ,  Tim H. Cornelissen

    IPC: G06F3/0484 ,  G06F3/01 ,  G06F3/0481

    Abstract: An electronic device may include a display for displaying image content to a user and dynamic image stabilization circuitry for dynamically compensating the image content if the device is moving unpredictably to help keep the image content aligned with the user's gaze. The electronic device may include sensors for detecting the displacement of the device. The dynamic image stabilization circuitry may include a usage scenario detection circuit and a content displacement compensation calculation circuit. The usage scenario detection circuit receives data from the sensors and infers a usage scenario based on the sensor data. The content displacement compensation calculation circuit uses the inferred usage scenario to compute a displacement amount by which to adjust image content. When motion stops, the image content may gradually drift back to the center of the display.

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