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:
Nov. 29, 1994
Filed:
Jun. 02, 1992
Masashi Shioka, Tokyo, JP;
Kazuya Kikuchi, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A switcher applicable to a redundant signal transmission system and capable of maintaining impedance matching when an input line associated with a faulty active transmitter is connected to a standby transmitter. The switcher may have first switching circuit assigned to the standby transmitter, a plurality of second switching circuits associated one-to-one with a plurality of active transmitters, and a pair of connection lines cascading the first and second switching circuits. When a faulty active transmitter is replaced with the standby transmitter, relay switches constituting the first and second switching circuits disconnect portions of the connection lines which are more remote, from the first switching circuit than the second switching circuit means associated with the faulty active transmitter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile