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

IPC: 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.

公开(公告)号：US20230290319A1

公开(公告)日：2023-09-14

申请号：US18108251

申请日：2023-02-10

Applicant: ATI TECHNOLOGIES ULC

Inventor： David I.J. GLEN

IPC: G09G5/00

CPC classification number: G09G5/006 ,  G09G2320/10 ,  G09G5/363

Abstract: A display system supports variable refresh rates that include a plurality of refresh rates. A source such as a graphics processing unit (GPU) provides frames to the display system at a selected one of the refresh rates. The refresh rates are factored into a corresponding plurality of prime factors. A plurality of numbers of lines per frame in frames provided at the plurality of refresh rates is determined based on one or more ratios of the plurality of refresh rates, the plurality of prime factors, and a line rate for providing frames to the display system at the plurality of refresh rates. The source then selectively provides frames to the display system at one refresh rate of the plurality of refresh rates using the same line rate regardless of which refresh rate is chosen. Furthermore, the number of lines per frame is an integer for frames provided at the refresh rates.

公开(公告)号：US20230118079A1

公开(公告)日：2023-04-20

申请号：US17877540

申请日：2022-07-29

Applicant: ATI TECHNOLOGIES ULC

Inventor： Jun LEI ,  Syed Athar HUSSAIN ,  David I.J. GLEN ,  Rajeevan PANCHACHARAMOORTHY ,  Fatemeh AMIRNAVAEI ,  David GALIFFI ,  Arshad RAHMAN ,  Boris IVANOVIC

IPC: G09G5/12 ,  G06F3/14

Abstract: A display system modifies display cycles of one or more displays to perform a system operation while avoiding visual perturbations at the one or more displays. The display system modifies, synchronizes, or both, blanking periods of the one or more displays such that blanking periods equal or exceed a blackout duration and overlap for at least the blackout duration. Then the system performs the system operation during an overlapping portion of the one or more blanking periods, where the system operation reduces availability of display data at the one or more displays.

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

IPC: G09G5/00 ,  G06T1/20 ,  G06T9/00

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.

公开(公告)号：US20230053263A1

公开(公告)日：2023-02-16

申请号：US17884793

申请日：2022-08-10

Applicant: ATI TECHNOLOGIES ULC

Inventor： David I.J. GLEN

IPC: G09G5/36 ,  G09G3/20

Abstract: A graphics processing unit (GPU) includes a timing reference one or more processors configured to generate and provide, based on the timing reference, frames to a display system that supports variable refresh rates. The frames include a vertical blanking region having a first duration. The display system transmits information indicating an operation to be performed by the display system during the vertical blanking region of one or more subsequent frames. The one or more processors are configured to increase the first duration to a second duration in response to receiving the information indicating an operation to be performed by the display system during the vertical blanking region of at least one subsequent frame. In some cases, the first duration of the vertical blanking region is a minimum duration that corresponds to a maximum refresh rate supported by the display system.

公开(公告)号：US20220093062A1

公开(公告)日：2022-03-24

申请号：US17030676

申请日：2020-09-24

Applicant: ATI TECHNOLOGIES ULC

Inventor： David I.J. GLEN

IPC: G09G5/36 ,  G09G3/20

Abstract: A graphics processing unit (GPU) includes a timing reference one or more processors configured to generate and provide, based on the timing reference, frames to a display system that supports variable refresh rates. The frames include a vertical blanking region having a first duration. The display system transmits information indicating an operation to be performed by the display system during the vertical blanking region of one or more subsequent frames. The one or more processors are configured to increase the first duration to a second duration in response to receiving the information indicating an operation to be performed by the display system during the vertical blanking region of at least one subsequent frame. In some cases, the first duration of the vertical blanking region is a minimum duration that corresponds to a maximum refresh rate supported by the display system.

公开(公告)号：US20220093057A1

公开(公告)日：2022-03-24

申请号：US17030659

申请日：2020-09-24

Applicant: ATI TECHNOLOGIES ULC

Inventor： David I.J. GLEN

IPC: G09G5/00

Abstract: A display system supports variable refresh rates that include a plurality of refresh rates. A source such as a graphics processing unit (GPU) provides frames to the display system at a selected one of the refresh rates. The refresh rates are factored into a corresponding plurality of prime factors. A plurality of numbers of lines per frame in frames provided at the plurality of refresh rates is determined based on one or more ratios of the plurality of refresh rates, the plurality of prime factors, and a line rate for providing frames to the display system at the plurality of refresh rates. The source then selectively provides frames to the display system at one refresh rate of the plurality of refresh rates using the same line rate regardless of which refresh rate is chosen. Furthermore, the number of lines per frame is an integer for frames provided at the refresh rates.

公开(公告)号：US20210375234A1

公开(公告)日：2021-12-02

申请号：US16889318

申请日：2020-06-01

Applicant: ATI TECHNOLOGIES ULC

Inventor： Jun LEI ,  Syed Athar HUSSAIN ,  David I.J. GLEN ,  Rajeevan PANCHACHARAMOORTHY ,  Fatemeh AMIRNAVAEI ,  David GALIFFI ,  Arshad RAHMAN ,  Boris IVANOVIC

IPC: G09G5/12 ,  G06F3/14

Abstract: A display system modifies display cycles of one or more displays to perform a system operation while avoiding visual perturbations at the one or more displays. The display system modifies, synchronizes, or both, blanking periods of the one or more displays such that blanking periods equal or exceed a blackout duration and overlap for at least the blackout duration. Then the system performs the system operation during an overlapping portion of the one or more blanking periods, where the system operation reduces availability of display data at the one or more displays.