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. 12, 1988
Filed:
Aug. 29, 1985
Applicant:
Inventor:
Yasumasa Nishimura, Itami, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G08B / ;
U.S. Cl.
CPC ...
324 / ; 340653 ;
Abstract
A redundancy-secured semiconductor device, comprising: primary semiconductor elements and secondary semiconductor elements, the secondary elements being spare, redundant elements for performing the functions of the primary elements that may contain faults. The primary elements are selectively disabled if a fault is found during a redundancy test and a secondary element is substituted therefor. The substituted secondary element is then tested for performance criteria at the time of the redundancy test.