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:
May. 06, 2008
Filed:
Jun. 29, 2004
Applicants:
Steven C. Woo, Saratoga, CA (US);
Bradley A. May, San Jose, CA (US);
Liewei Bao, Westford, MA (US);
Inventors:
Assignee:
Rambus Inc., Los Altos, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A memory controller monitors requests from one or more computer subsystems and issues one or more prefetch commands if the memory controller detects that the memory system is idle after a period of activity, or if a prefetch buffer read hit occurs. In some embodiments, results of a prefetching operations are stored in a prefetch buffer configured to provide an automatic aging mechanism, which evicts prefetched data from time to time. The prefetched data in the prefetch buffer is released and sent back to the requester in order with respect to previous memory access requests.