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:
Apr. 30, 2013
Filed:
Dec. 30, 2003
Applicants:
Glenn G. Algie, Ottawa, CA;
Eric C. Valk, Nepean, CA;
Craig D. Suitor, Nepean, CA;
Inventors:
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04J 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A communications network includes multiple distributed nodes that are coupled by a circuit-switched network. To improve efficiency, a plurality of the nodes are associated with a single source synchronization block that injects timing messages over circuits in the circuit-switched network to the plurality of nodes. Each of the plurality of nodes is associated with a timing extraction and recovery block that extracts information from the timing messages injected by the source synchronization block to synchronize a local clock in each node to the frequency and phase of a clock received by the source synchronization block.