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:
May. 20, 1997
Filed:
Apr. 28, 1994
Yuuki Yoshifuji, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A digital cross-connect system has a network management system for designating input and output terminals and delivering one-to-one connection and one-to-many branch connection request signals, and a plurality of cross-connect devices each including a multistage switch for switching connections between the input and output terminals over former, intermediate, and latter stages, and a switch control device for controlling switched connections between the input and output terminals. The network management system designates a switch in the latter stage and delivers a one-to-many connection request signal. The switch control device instructs a switch in the former stage to make a one-to-one connection only and inhibits the switch from making a one-to-many branch connection in response to the one-to-many connection request signal, and also instructs the designated switch in the latter stage to inhibit signals from being supplied from input terminals other than one designated input terminal. If the switch designated by the one-to-many connection request signal is blocked and fails to make any connections, then error information is returned from the switch control device to the network management system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile