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    Extending the range of variable refresh rate displays
    2.
    发明授权
    Extending the range of variable refresh rate displays 有权

    公开(公告)号：US10714056B2

    公开(公告)日：2020-07-14

    申请号：US15884855

    申请日：2018-01-31

    Applicant: ATI Technologies ULC

    Inventor： David Glen

    IPC: G09G5/18 ,  G06T1/60 ,  G09G5/00 ,  G09G5/395

    Abstract: Briefly, methods and apparatus to provide image content to, and display image content on, variable refresh rate displays with reduced input lag. The methods and apparatus allow for image tearing, or the displaying of image content from more than one video frame, when the render rate of a provided video frame falls outside the display refresh rate range of a variable refresh rate display when the display is refreshing with a previous frame (e.g. the display is in active refresh), thus reducing the input lag of the content of the provided video frame. The methods and apparatus may also prevent image tearing when the render rate of provided video frames is within the display refresh rate range of a display.

    Method and apparatus for an HDR hardware processor inline to hardware encoder and decoder
    5.
    发明授权
    Method and apparatus for an HDR hardware processor inline to hardware encoder and decoder 有权

    公开(公告)号：US11503310B2

    公开(公告)日：2022-11-15

    申请号：US16176826

    申请日：2018-10-31

    Applicant: ATI TECHNOLOGIES ULC ,  ADVANCED MICRO DEVICES, INC.

    Inventor： Lei Zhang ,  David Glen ,  Kim A. Meinerth

    IPC: H04N19/186 ,  H04N19/156 ,  H04N19/124 ,  G06T5/00 ,  G06T7/90 ,  H04N19/70

    Abstract: A device includes an encoder, decoder, codec or combination thereof and inline hardware conversion units that are operative to convert stored image data into one of: an HDR/WCG format and an SDR/SCG format during the conversion process. Each of the inline hardware conversion units is operative to perform the conversion process independent of another read operation with the memory that stores the image data to be converted. In one example, an encoding unit is operative to perform a write operation with a memory to store the converted image data after completing the conversion process. In another example, a decoding unit is operative to perform a read operation with the memory to retrieve the image data from the memory before initiating the conversion process. In another example, an encoder/decoder unit is operative to perform at least one of: the read operation and the write operation.

    Frame-rate based illumination control at display device
    6.
    发明授权
    Frame-rate based illumination control at display device 有权

    公开(公告)号：US11430409B2

    公开(公告)日：2022-08-30

    申请号：US17464889

    申请日：2021-09-02

    Applicant: ATI TECHNOLOGIES ULC

    Inventor： Ed Callway ,  David Glen

    IPC: G09G5/10 ,  G09G3/34 ,  G09G3/3208 ,  G06T15/50 ,  G09G3/20 ,  G06F3/01 ,  G09G3/32 ,  G09G3/36

    Abstract: A display system includes a rendering device and a display device. The rendering device is to render a sequence of frames for display at a frame rate and to set an illumination configuration to be applied by the display device during a frame period for each frame of the sequence of frames based on the frame rate. The illumination configuration controls at least one of an illumination level and a duration for an illumination strobe, and at least one of an illumination level for an illumination fill preceding the illumination strobe in the frame period and an illumination level for an illumination fill following the illumination strobe in the frame period. The display device is to receive a representation of the illumination configuration from the rendering device and apply the illumination configuration during a frame period for each frame of the sequence of frames to display the frame.

    METHOD AND APPARATUS FOR IMAGE COMPRESSION THAT EMPLOYS MULTIPLE INDEXED COLOR HISTORY BUFFERS
    8.
    发明申请
    METHOD AND APPARATUS FOR IMAGE COMPRESSION THAT EMPLOYS MULTIPLE INDEXED COLOR HISTORY BUFFERS 审中-公开

    公开(公告)号：US20190297333A1

    公开(公告)日：2019-09-26

    申请号：US16440078

    申请日：2019-06-13

    Applicant: ATI Technologies ULC

    Inventor： David Glen ,  Nicholas Chorney

    IPC: H04N19/174 ,  H04N19/182

    Abstract: A single source image encoder encodes more than one display stream, such as multiple display streams each for a different display or multiple display streams for the same display, using multiple indexed color history (ICH) buffers. As applied to a DSC encoder, the same DSC encoder is used to encode more than one DSC compliant display stream. Multiple encoded display bitstreams are output as multiple display data streams to a plurality of displays. Such a configuration can significantly reduce the area cost of an integrated circuit that employs an image encoder since additional encoders are eliminated.

    Flexible addressing for a three dimensional (3-D) look up table (LUT) used for gamut mapping
    9.
    发明授权
    Flexible addressing for a three dimensional (3-D) look up table (LUT) used for gamut mapping 有权

    公开(公告)号：US10424269B2

    公开(公告)日：2019-09-24

    申请号：US15388663

    申请日：2016-12-22

    Applicant: ATI TECHNOLOGIES ULC

    Inventor： Yuxin Chen ,  David Glen ,  Yee Shun Chan

    IPC: G09G5/06 ,  G09G5/02 ,  G09G5/397

    Abstract: A three-dimensional (3-D) look up table (LUT) can be accessed using an address decoder to identify a plurality of vertices in the 3-D LUT based on a number (m) of most significant bits (MSBs) of three coordinate values representative of a first color and a non-zero integer (p). The three coordinate values are determined by a source gamut. One or more memories store component values representative of a plurality of second colors determined by a destination gamut. The component values are stored at memory locations associated with the plurality of vertices. An interpolator maps the input color to an output color in the destination gamut based on the component values.

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