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:
Sep. 20, 2011
Filed:
Dec. 04, 2007
John E. Barth, Jr., Williston, VT (US);
Philip G. Emma, Danbury, CT (US);
Erik L. Hedberg, Essex Jct., VT (US);
Hillery C. Hunter, Somers, NY (US);
Peter A. Sandon, Essex Jct., VT (US);
Vijayalakshmi Srinivasan, New York, NY (US);
Arnold S. Tran, South Burlington, VT (US);
John E. Barth, Jr., Williston, VT (US);
Philip G. Emma, Danbury, CT (US);
Erik L. Hedberg, Essex Jct., VT (US);
Hillery C. Hunter, Somers, NY (US);
Peter A. Sandon, Essex Jct., VT (US);
Vijayalakshmi Srinivasan, New York, NY (US);
Arnold S. Tran, South Burlington, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for implementing dynamic refresh protocols for DRAM based cache includes partitioning a DRAM cache into a refreshable portion and a non-refreshable portion, and assigning incoming individual cache lines to one of the refreshable portion and the non-refreshable portion of the cache based on a usage history of the cache lines. Cache lines corresponding to data having a usage history below a defined frequency are assigned to the refreshable portion of the cache, and cache lines corresponding to data having a usage history at or above the defined frequency are assigned to the non-refreshable portion of the cache.