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:
Sep. 26, 1995
Filed:
Apr. 20, 1993
Yasushi Aoki, Tokyo, JP;
Akihiro Shiratori, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Switching circuits are connected between data input lines to and data output lines to connect switch paths between them. A two-input selector is connected to each of the data input lines to supply a data input signal or a test signal to the switching circuits. The selection of the two signals depends on whether the data input line is being used or not. The switch path connections in the switching circuits are controlled by the switching control circuits. Normally, a particular switch path is connected, but while testing, all the switch paths of an unoperated switching circuit which is not normally selected, are connected by a test address signal. The outputs of the switching circuits are detected by an error detector and compared with an expected data sequence, which indicates which output of the switching circuits is detected by the error detector.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile