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. 04, 2001
Filed:
May. 08, 1998
Tomoaki Kodama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In an asynchronous transfer mode network, a virtual path is established between two subscriber switches through a transit switch. A virtual channel is established between two terminals which are connected to the subscriber switches, respectively. Any one of the subscriber switches detects a command signal sent from a terminal to establish/release the virtual channel. The subscriber switch judges whether or not it is necessary to change bandwidth of the virtual path on the basis of the command signal. The subscriber switch produces a direction signal for directing the transit switch to extend/reduce the bandwidth of the virtual path when the specific subscriber judges that it is necessary to change the bandwidth of the virtual path. The transit switch extends/reduces the bandwidth of the virtual path by a predetermined step in response to the direction signal.