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:
Jul. 05, 1994
Filed:
Mar. 16, 1992
Applicant:
Inventor:
Tsutomu Akiyama, Tokyo, JP;
Assignee:
Ando Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ; G11C / ; G11C / ;
U.S. Cl.
CPC ...
364580 ; 371 211 ; 371 212 ; 371 213 ; 371-3 ;
Abstract
A pattern memory circuit for an integrated circuit testing apparatus. The time consumed for diagnosis in the conventional testing apparatus which uses a CPU is reduced by performing test pattern memory checking using hardware in accordance with the present invention. The test pattern file in a pattern memory escapes from the area to be tested to another area of the pattern memory and the test is performed and upon completion of the test the file returns to the original area.