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. 12, 2000
Filed:
Jul. 29, 1997
Applicant:
Inventors:
Kazuo Tanaka, Kawasaki, JP;
Eiji Shimose, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370467 ; 370503 ;
Abstract
A first group of asynchronous clock converters effect the conversion between a DNE clock and an RDT clock to which DS-0 data and signalling data are synchronized, for the data items which are transferred between a cross-connector and a DNE. A second group of asynchronous clock converters effect the conversion between a CPE clock and the RDT clock to which DS-0 data and signalling data are synchronized, for the data items which are transferred between the cross-connector and a CPE. As a result, cross-connect processes based on the single RDT clock are realized, and loop timings are guaranteed for the DNE and the CPE.