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:
May. 16, 2006
Filed:
Mar. 08, 2001
Kim B. Roberts, Nepean, CA;
Wolfgang W. Oberhammer, Ottawa, CA;
Kim B. Roberts, Nepean, CA;
Wolfgang W. Oberhammer, Ottawa, CA;
Nortel Networks Limited, St. Laurent, CA;
Abstract
A framer is adapted for framing a high error rate data signal received through a link of a communications network, the data signal comprising M (an integer, M>1) interleaved sub-streams. The framer includes means for detecting a respective unique synchronizing word within each sub-stream. Each respective unique synchronizing word comprises: a non-unique position word having a first predetermined hamming distance; and a non-unique identifier word having a second predetermined hamming distance. The framer preferably includes M individual framers, and a master framer. Each individual framer operates to search the data signal to detect a respective one of the respective unique synchronizing words; and assert a respective individual frame found state for a first predetermined period of time when a respective one of the unique synchronizing words is found. The master framer controls operations of each individual framer, and declares a master frame lock state if the individual frame found state is asserted by all of the individual framers within a second predetermined period of time.