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.
Patent No.:
Date of Patent:
Oct. 07, 2025
Filed:
Sep. 29, 2022
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Ati Technologies Ulc, Markham, CA;
Ashish Jain, Austin, TX (US);
Shang Yang, Markham, CA;
Jun Lei, Markham, CA;
Gia Tung Phan, Markham, CA;
Oswin Hall, Markham, CA;
Benjamin Tsien, Santa Clara, CA (US);
Narendra Kamat, Santa Clara, CA (US);
Advanced Micro Devices, Inc., Santa Clara, CA (US);
ATI Technologies ULC, Markham, CA;
Abstract
Systems, apparatuses, and methods for prefetching data by a display controller. From time to time, a performance-state change of a memory are performed. During such changes, a memory clock frequency is changed for a memory subsystem storing frame buffer(s) used to drive pixels to a display device. During the performance-state change, memory accesses may be temporarily blocked. To sustain a desired quality of service for the display, a display controller is configured to prefetch data in advance of the performance-state change. In order to ensure the display controller has sufficient memory bandwidth to accomplish the prefetch, bandwidth reduction circuitry in clients of the system are configured to temporarily reduce memory bandwidth of corresponding clients.