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:
Dec. 09, 2003
Filed:
Jun. 09, 1999
Akira Hayama, Sagamihara, JP;
Yoshiro Osaki, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A communication network system comprises ring systems (A, B, C, D) and a common node device that is connected in common to ring circuits ( A, B, C, D) of each of the ring systems (A, B, C, D) and that gathers data from each of the ring circuits ( A, B, C, D) relaying it to a relay circuit . The common node device accommodates virtual channel paths within all the ring circuits ( A, B, C, D) by means of a virtual path switching path. The relay transmission is realized by means of virtual path switching control that uses this common node device and virtual channel switching control that uses each of the ring nodes within the ring circuits ( A, B, C, D).