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. 13, 2004
Filed:
Mar. 23, 2001
Applicant:
Inventor:
Akihiko Ohwada, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/100 ;
U.S. Cl.
CPC ...
G06F 1/100 ;
Abstract
The present invention provides a processor including a self-diagnostic function. The processor comprises: an arithmetic circuit including an adder-subtracter, which is a diagnostic object; a data storing unit which stores a self-diagnostic data; and a self-diagnostic processing unit. The self-diagnostic processing unit inputs the self-diagnostic data, and then, carries out diagnostic processing so that every bit of the operation result becomes all zero “0” (or all “1”) by the arithmetic circuit.