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. 16, 2010
Filed:
Feb. 27, 2006
James Aweya, Kanta, CA;
Michel Ouellette, Orleans, CA;
Delfin Montuno, Kanata, CA;
Kent Felske, Kanta, CA;
James Aweya, Kanta, CA;
Michel Ouellette, Orleans, CA;
Delfin Montuno, Kanata, CA;
Kent Felske, Kanta, CA;
Ciena Corporation, Linthicum, MD (US);
Abstract
The invention includes a technique for clock recovery in a network having master and slave clocks in respective Time Division Multiplexing ('TDM') network segments which are interconnected by a non-TDM segment. Master clock timestamps are sent to the slave. The slave measures a master clock timestamp inter-arrival interval, and sends slave clock timestamps to the master. The master measures a slave clock timestamp inter-arrival interval, and sends that slave clock timestamp inter-arrival interval to the slave. The slave then calculates an error signal based at least in-part on the difference between the master clock timestamp inter-arrival interval and the slave clock timestamp inter-arrival interval, and employs the difference to recover the first service clock in the second TDM segment.