The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 10, 2023

Filed:

Sep. 23, 2020
Applicant:

Ati Technologies Ulc, Markham, CA;

Inventors:

Anthony W L Koo, Markham, CA;

Syed Athar Hussain, Markham, CA;

Assignee:

ATI TECHNOLOGIES ULC, Markham, CA;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/041 (2006.01); G09G 5/393 (2006.01); G09G 5/399 (2006.01); G09G 5/36 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0412 (2013.01); G09G 5/393 (2013.01); G09G 5/363 (2013.01); G09G 5/399 (2013.01); G09G 2340/0435 (2013.01); G09G 2354/00 (2013.01); G09G 2360/18 (2013.01);
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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