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. 06, 1998
Filed:
Sep. 05, 1995
Applicant:
Inventor:
Hideki Sugimoto, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
39518502 ; 39518313 ; 371 671 ;
Abstract
A data processor has an internal data bus and an instruction fetch bus provided separately from each other. When a data-read operation mode is designated, data stored in an internal read only memory are read out onto both the internal data bus and the instruction fetch bus, and the data on these buses are then subject to an operation by an execution unit to check the coincidence therebetween, the comparison resultant signal being transferred to the outside.