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. 11, 1977
Filed:
Apr. 28, 1976
Applicant:
Inventor:
Cyrus Frank Ault, Wheaton, IL (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G06F / ;
U.S. Cl.
CPC ...
2353023 ; 3401 / ; 3401 / ;
Abstract
An adaptable exerciser for a memory system utilizes the error rates of independent memory segments to selectively exercise the segments at different frequencies. Each memory segment has an associated counter which is incremented with errors and decremented at a predetermined rate with time. If the count accumulated in a counter reaches a specified level, the associated memory segment will be exercised at a higher frequency. If the count in any counter should reach a second higher specified level, the associated memory segment is removed from service.