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    Resynchronization of a display system and GPU after panel self refresh
    11.
    发明授权
    Resynchronization of a display system and GPU after panel self refresh 有权

    公开(公告)号：US11688031B2

    公开(公告)日：2023-06-27

    申请号：US17060942

    申请日：2020-10-01

    Applicant: ATI TECHNOLOGIES ULC

    Inventor： Anthony W L Koo ,  Syed Athar Hussain ,  David I. J. Glen

    IPC: G09G5/393 ,  G06T1/20 ,  G09G3/36

    CPC classification number: G06T1/20 ,  G09G3/3618 ,  G09G2340/16 ,  G09G2360/18

    Abstract: A display system receives first timing information prior to the display system entering a panel self-refresh (PSR) mode. The display system supports a range of refresh rates. Prior to the display system entering the PSR mode, first timing information indicating a first refresh rate that is lower than a maximum refresh rate supported by the display system is received by the display system. The display system then refreshes images at a second refresh rate that is less than or equal to the first refresh rate using a frame stored in a buffer prior to entering the PSR mode. In some cases, the processing unit also receives second timing information from the display system in response to initiating an exit from a panel self-refresh (PSR) mode. The second timing information indicates a current scanout line that is used to schedule transmission of a subsequent frame.

    VIRTUALIZED DISPLAY OUTPUT PORTS CONFIGURATION
    13.
    发明申请
    VIRTUALIZED DISPLAY OUTPUT PORTS CONFIGURATION 有权
    虚拟显示输出端口配置

    公开(公告)号：US20160171925A1

    公开(公告)日：2016-06-16

    申请号：US14565583

    申请日：2014-12-10

    Applicant: ATI Technologies ULC

    Inventor： Syed Athar Hussain

    IPC: G09G3/20 ,  G06F13/38

    CPC classification number: G09G3/2096 ,  G06F13/362 ,  G06F13/387 ,  G09G2310/08 ,  G09G2370/10

    Abstract: A virtualized DisplayPort (DP) configuration data (DPCD) for multi-stream transport (MST) logical DP end points and non-DP end points allows DPCD configuration for links within a DisplayPort topology which are not configurable using DPCD. A virtualized DPCD may configure a link to an internal display of a MST sink device or a non-DP display to receive data using a dynamic refresh rate (DRR), display stream compression (DSC), panel self-refresh (PSR) and other DPCD configurable features.

    Abstract translation: 用于多流传输（MST）逻辑DP端点和非DP端点的虚拟化DisplayPort（DP）配置数据（DPCD）允许DPCD配置用于不能使用DPCD配置的DisplayPort拓扑中的链路。 虚拟化DPCD可以配置到MST宿设备或非DP显示器的内部显示器的链接，以使用动态刷新率（DRR），显示流压缩（DSC），面板自刷新（PSR）等来接收数据 DPCD可配置功能。

    METHOD AND DEVICE FOR CREATING AND MAINTAINING SYNCHRONIZATION BETWEEN VIDEO SIGNALS
    14.
    发明申请
    METHOD AND DEVICE FOR CREATING AND MAINTAINING SYNCHRONIZATION BETWEEN VIDEO SIGNALS 有权
    用于在视频信号之间创建和维护同步的方法和设备

    公开(公告)号：US20140098849A1

    公开(公告)日：2014-04-10

    申请号：US13645020

    申请日：2012-10-04

    Applicant: ATI TECHNOLOGIES, ULC

    Inventor： Alexander Panich ,  Syed Athar Hussain

    IPC: H04N11/02

    CPC classification number: H04N21/4122 ,  G06F3/1423 ,  G06F3/1446 ,  G09G5/12 ,  H04N13/398 ,  H04N21/4307 ,  H04N21/436 ,  H04N21/44029

    Abstract: A method and device for providing synchronized data output is provided. The method includes generating two data streams sending data to be presented in synchronization. Both streams are generated by the same processor-based device. The first data stream follows a first protocol and the second data stream follows a second (different) protocol. The processor of the processor-based device adjusts a data rate of the second data stream to cause a reduction in any timing offset between the streams.

    Abstract translation: 提供了一种用于提供同步数据输出的方法和装置。 该方法包括产生发送要同步呈现的数据的两个数据流。 两个流都由相同的基于处理器的设备生成。 第一数据流遵循第一协议，第二数据流遵循第二（不同）协议。 基于处理器的设备的处理器调整第二数据流的数据速率以导致流之间的任何定时偏移的减小。

    Accelerated frame transmission
    16.
    发明授权
    Accelerated frame transmission 有权

    公开(公告)号：US11551632B2

    公开(公告)日：2023-01-10

    申请号：US17029736

    申请日：2020-09-23

    Applicant: ATI TECHNOLOGIES ULC

    Inventor： Syed Athar Hussain ,  Anthony W L Koo ,  David I. J. Glen

    IPC: G06F13/00 ,  G09G5/00 ,  G06T1/20 ,  G06T9/00

    Abstract: A graphics processing unit (GPU) of a processing system transmits pixel data for a frame to a display in a compressed burst, so that the pixel data is communicated at a rate that is higher than the rate at which the display scans out the pixel data to refresh the frame at a display panel. By transmitting pixel data for the frame in a compressed burst, the GPU shortens the time spent transmitting the pixel data and extends the time before the next frame of pixel data is to be transmitted. During the extended time before the next frame of pixel data is to be transmitted, the GPU saves power by placing portions of the processing system in a reduced power mode.

    Multi-stream foveal display transport
    17.
    发明授权
    Multi-stream foveal display transport 有权

    公开(公告)号：US11307655B2

    公开(公告)日：2022-04-19

    申请号：US16575804

    申请日：2019-09-19

    Applicant: ATI Technologies ULC

    Inventor： Guennadi Riguer ,  Syed Athar Hussain

    IPC: G06F3/01 ,  G06T3/40 ,  H04L29/06 ,  H04L65/80 ,  H04L67/131

    Abstract: Systems, apparatuses, and methods for using a multi-stream foveal display transport layer are disclosed. A virtual reality (VR) system includes a transmitter sending a plurality of streams over a display transport layer to a receiver coupled to a display. Each stream corresponds to a different image to be blended together by the receiver. The images include at least a foveal region image corresponding to a gaze direction of the eye and a background image which is a lower-resolution image with a wider field of view than the foveal region image. The phase timing of the foveal region stream being sent over the transport layer is adjusted with respect to the background stream to correspond to the location of the foveal region within the overall image. This helps to reduce the amount of buffering needed at the receiver for blending the images together to create a final image to be driven to the display.

    Dynamic scaling of content luminance and backlight
    18.
    发明授权
    Dynamic scaling of content luminance and backlight 有权

    公开(公告)号：US11145240B2

    公开(公告)日：2021-10-12

    申请号：US16146731

    申请日：2018-09-28

    Applicant: ATI TECHNOLOGIES ULC

    Inventor： Anthony W L Koo ,  Syed Athar Hussain ,  Krunoslav Kovac

    IPC: G09G3/22 ,  G09G3/36

    Abstract: A method for dynamic scaling of content luminance and backlight level includes determining, using one or more processors of a display system, an ambient light level of a local environment proximate the display system. Based on the ambient light level being brighter than a first ambient light threshold, it is determined that the display system is in a normal room or a bright environment. A minimum viewable threshold representing a minimum pixel luminance value perceivable by a user in the ambient light level of the local environment is determined. The method further includes generating a modified display image by shifting the pixel luminance values of one or more pixels of an input image such that a darkest pixel value of the modified display image is equal to or greater than the minimum viewable threshold before transmitting the modified display image for display.

    MULTI-STREAM FOVEAL DISPLAY TRANSPORT
    19.
    发明申请
    MULTI-STREAM FOVEAL DISPLAY TRANSPORT 有权

    公开(公告)号：US20210089119A1

    公开(公告)日：2021-03-25

    申请号：US16575804

    申请日：2019-09-19

    Applicant: ATI Technologies ULC

    Inventor： Guennadi Riguer ,  Syed Athar Hussain

    IPC: G06F3/01 ,  H04L29/06 ,  G06T3/40

    Abstract: Systems, apparatuses, and methods for using a multi-stream foveal display transport layer are disclosed. A virtual reality (VR) system includes a transmitter sending a plurality of streams over a display transport layer to a receiver coupled to a display. Each stream corresponds to a different image to be blended together by the receiver. The images include at least a foveal region image corresponding to a gaze direction of the eye and a background image which is a lower-resolution image with a wider field of view than the foveal region image. The phase timing of the foveal region stream being sent over the transport layer is adjusted with respect to the background stream to correspond to the location of the foveal region within the overall image. This helps to reduce the amount of buffering needed at the receiver for blending the images together to create a final image to be driven to the display.

    Source-side tone mapping based on native color gamut and brightness of display
    20.
    发明授权
    Source-side tone mapping based on native color gamut and brightness of display 有权

    公开(公告)号：US10706812B2

    公开(公告)日：2020-07-07

    申请号：US15993393

    申请日：2018-05-30

    Applicant: ATI TECHNOLOGIES ULC

    Inventor： Anthony W L Koo ,  Syed Athar Hussain

    IPC: G09G5/00 ,  G09G3/20 ,  G09G5/36 ,  H04N1/60 ,  H04N5/57 ,  H04N9/64 ,  G09G5/10

    Abstract: A display system includes a rendering device configured to couple to a display monitor. The rendering device includes a graphics processing unit (GPU) configured to render display images for a video stream to be displayed at the display monitor. The rendering device further includes a central processing unit (CPU) configured to obtain display parameters for the display monitor, the display parameters including data identifying a native color gamut, a native luminance range of the display monitor, and one or more backlighting characteristics of the display monitor, and to configure the GPU to render a display image of the video stream that is tone mapped to the native color gamut and the native luminance range and based on the one or more backlighting characteristics. The display monitor is configured to provide the display image for display without tone re-mapping the display image.

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