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. 09, 2010
Filed:
Dec. 28, 2007
Osamu Takeuchi, Kawasaki, JP;
Yoshitaka Taki, Kawasaki, JP;
Satoru Saitoh, Kawasaki, JP;
Hiroyuki Honma, Kawasaki, JP;
Tomoyoshi Fujimori, Kawasaki, JP;
Osamu Takeuchi, Kawasaki, JP;
Yoshitaka Taki, Kawasaki, JP;
Satoru Saitoh, Kawasaki, JP;
Hiroyuki Honma, Kawasaki, JP;
Tomoyoshi Fujimori, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a path status monitoring method and device which can enhance or reduce a band more rapidly, for example, SONET frames FR serially connected over 32 frames to which frame Nos. FN ('0'-'31')) are assigned are cyclically generated respectively for paths P-Pin a cycle T(=64 ms). After output timing delays T-Tof the frames FR are shifted by an optimal delay interval D (=21 ms) between the paths P-Pbased on the number of the paths “3”, the output timing delays Tand Tare restored by preliminarily obtained transmission delays for the paths Pand Pto the path P. When the frames FR are transmitted through each of the paths P-P, statuses (path statuses MST) where a reception fault has occurred in each of the paths P-Pare collected to be stored in the frame whose frame No. FN=“0”.