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:
Apr. 09, 1985
Filed:
Nov. 25, 1983
Applicant:
Inventor:
Robert D Catiller, Garden Grove, CA (US);
Assignee:
Burroughs Corporation, Detroit, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
371 21 ; 324 / ;
Abstract
A testing circuit is disclosed for addressing and exercising a ROM-type memory and splitting the same memory output data into two paths. One path is used to temporarily hold the memory output data for a time-interval after which it is compared, in a digital comparator, with the same memory output data on the second path. When the data on both paths compare equally, then it is known that no instability has occurred during the time-interval. If a miscompare occurs, the comparator generates an error signal.