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:
Mar. 07, 1989
Filed:
Mar. 03, 1982
Applicant:
Inventor:
James R Hamstra, Plymouth, MN (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
In a memory system having a cache memory and a bulk memory, write-back of data segments in the cache memory to the bulk memory for replacement purposes is accomplished in accordance with a least recently used algorithm while the write-back of written-to segments to the bulk memory without replacement is accomplished in accordance with an age since first write algorithm.