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公开(公告)号：US20230148254A1
公开(公告)日：2023-05-11
申请号：US18089837
申请日：2022-12-28
Applicant: ATI TECHNOLOGIES ULC
Inventor： Syed Athar HUSSAIN , Anthony WL KOO , David I.J. GLEN
CPC classification number: G09G5/00 , G06T1/20 , G06T9/00 , G09G2330/023 , G09G2360/18 , G09G2370/12
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.
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公开(公告)号：US20190371262A1
公开(公告)日：2019-12-05
申请号：US15993393
申请日：2018-05-30
Applicant: ATI TECHNOLOGIES ULC
Inventor： Anthony WL KOO , Syed Athar HUSSAIN
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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公开(公告)号：US20250014535A1
公开(公告)日：2025-01-09
申请号：US18680798
申请日：2024-05-31
Applicant: ATI TECHNOLOGIES ULC
Inventor： Syed Athar HUSSAIN , Anthony WL KOO , David I.J. GLEN
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.
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公开(公告)号：US20210407467A1
公开(公告)日：2021-12-30
申请号：US17029721
申请日：2020-09-23
Applicant: ATI TECHNOLOGIES ULC
Inventor： Anthony WL KOO , Syed Athar HUSSAIN
Abstract: A processing system reduces latency and improves predictability of a scan out position to support graphics processing unit (GPU) front buffer rendering with a variable refresh rate (VRR) display. The GPU detects whether front buffer rendering such as inking is occurring on a frame-by-frame basis. In order to maintain a safe distance from the current scan out position and achieve low latency to improve the user experience, the GPU increases the refresh rate of the VRR display to a low-latency (high-frequency) fixed refresh rate in response to detecting front buffer rendering. In some embodiments, the GPU decreases the refresh rate in response to detecting a static screen to save power.
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Patent Agency Ranking
公开(公告)号：US20220108418A1
公开(公告)日：2022-04-07
申请号：US17060942
申请日：2020-10-01
Applicant: ATI TECHNOLOGIES ULC
Inventor： Anthony WL KOO , Syed Athar HUSSAIN , David I. J. GLEN
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.
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公开(公告)号：US20220092722A1
公开(公告)日：2022-03-24
申请号：US17029750
申请日：2020-09-23
Applicant: ATI TECHNOLOGIES ULC
Inventor： Anthony WL KOO , Syed Athar HUSSAIN
IPC: G06T1/20
Abstract: A rendering device signals a display device to capture and replay a current frame to maintain a static image while switching between multiple graphics processing units (GPUs) at a multiplexer (MUX). Replaying the current frame while the MUX switch is in progress smooths the user experience such that no screen blanking or artifacts are observable.
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公开(公告)号：US20220223098A1
公开(公告)日：2022-07-14
申请号：US17706790
申请日：2022-03-29
Applicant: ATI TECHNOLOGIES ULC
Inventor： Anthony WL KOO , Syed Athar HUSSAIN
Abstract: A graphics processing unit (GPU) instructs a display control module to capture content and display captured content in response to the refresh rate of a display exceeding a frame generation rate of the GPU. Rather than re-transmit the same frame multiple times, the GPU instructs the display control module to replay a previously-transmitted frame. During a refresh cycle in which the display control module is replaying captured content, the GPU omits accessing memory to retrieve and resend the frame that is being replayed, and instead sends only invalid data and GPU timing information so that the display control module remains synchronized with the GPU.
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公开(公告)号：US20210407456A1
公开(公告)日：2021-12-30
申请号：US17029736
申请日：2020-09-23
Applicant: ATI TECHNOLOGIES ULC
Inventor： Syed Athar HUSSAIN , Anthony WL KOO , David I. J. Glen
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.
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公开(公告)号：US20210104206A1
公开(公告)日：2021-04-08
申请号：US17123359
申请日：2020-12-16
Applicant: ATI Technologies ULC
Inventor： Anthony WL KOO , Aric CYR , Syed Athar HUSSAIN
Abstract: A GPU is generally configured to detect changes in the rate of frame generation that can result from, for example, changes in the complexity of the frames being generated. In response to detecting the change in the rate of frame generation, the GPU identifies a corresponding change in the refresh rate that would be required to fully synchronize the refresh rate with the rate of frame generation. If the change in the refresh rate falls outside the boundaries of a specified or dynamically generated window, the GPU limits the change in refresh rate to the corresponding boundary.
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