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.

Date of Patent:
Oct. 09, 1990

Filed:

Aug. 26, 1988
Applicant:
Inventor:

Katsuhiko Nakagawa, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 24 ; 371 212 ; 365201 ;
Abstract

A data processor includes a barrel shifter receiving input data at input terminals thereof and producing shifted data at output terminals thereof in response to shift control data, the shifted data being temporarily stored in a storage circuit which, in turn, returns the data stored therein to the output terminals of the barrel shifter in response to a test-enable signal. Feed-back data derived from the input terminals of the barrel shifter by returning the stored data through the barrel shifter is then compared with the input data to produce a comparison output representing whether or not both data are the same.


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Nakagawa, Katsuhiko. (1990). Data processor including testing structure for a barrel shifter (U.S. Patent No. 4962500). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4962500

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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