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:
Jan. 31, 2012
Filed:
May. 23, 2008
John E. Barth, Williston, VT (US);
Philip G. Emma, Danbury, CT (US);
Erik L. Hedberg, Essex Junction, VT (US);
Hillery C. Hunter, Somers, NY (US);
Peter A. Sandon, Essex Junction, VT (US);
Vijayalakshmi Srinivasan, New York, NY (US);
Arnold S. Tran, South Burlington, VT (US);
John E. Barth, Williston, VT (US);
Philip G. Emma, Danbury, CT (US);
Erik L. Hedberg, Essex Junction, VT (US);
Hillery C. Hunter, Somers, NY (US);
Peter A. Sandon, Essex Junction, VT (US);
Vijayalakshmi Srinivasan, New York, NY (US);
Arnold S. Tran, South Burlington, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A hardware description language (HDL) design structure embodied on a machine-readable data storage medium includes elements that when processed in a computer aided design system generates a machine executable representation of a device for implementing dynamic refresh protocols for DRAM based cache. The HDL design structure further includes a DRAM cache partitioned into a refreshable portion and a non-refreshable portion; and a cache controller configured to assign 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; wherein cache lines corresponding to data having a usage history below a defined frequency are assigned by the controller 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.