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:
Oct. 06, 2009
Filed:
Apr. 07, 2006
Applicants:
Hiroyuki Matsuo, Kadoma, JP;
Eiji Maeda, Neyagawa, JP;
Inventors:
Hiroyuki Matsuo, Kadoma, JP;
Eiji Maeda, Neyagawa, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device including a line interface for additionally installing a line is installed in a terminal repeater device which takes a work and protection redundancy configuration based on a criterion such as SONET, SDH, or the like. Within the device additionally installed, the clocks supplied from work and protection devices are each compared. The respective clocks are variably delayed based on the comparison result so as to allow the device additionally installed to perform clock phase control as to the work and protection lines.