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:
Mar. 24, 2009
Filed:
Aug. 18, 2003
Timothy Michael Edmund Frost, Plymouth, GB;
Geoffrey Edward Floyd, Devon, GB;
Timothy Michael Edmund Frost, Plymouth, GB;
Geoffrey Edward Floyd, Devon, GB;
Zarlink Semiconductor Limited, Wiltshire, GB;
Abstract
A method for distributing timing information across a packet network includes generating timing signals at a master clock at predictable intervals using a clock reference of a given frequency. The timing signals are broadcast or multicast to a plurality of slave clocks over the packet network, preserving the timing signal intervals. At each slave clock, the intervals between successively received timing signals are determined. A clock recovery algorithm is applied to the determined intervals to recover in substantially real time the original clock frequency. The local clock frequency of the slave clock is synchronized to the recovered frequency.