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. 04, 2006
Filed:
Mar. 11, 2003
Claudio Gustavo Rey, Stittsville, CA;
Jonathan Robert Gay, Vancouver, CA;
William Michael Lye, Coquitlam, CA;
Ognjen Katic, Vancouver, CA;
Terence K. W. Lau, Coquitlam, CA;
Jatinder Singh Chana, Burnaby, CA;
Claudio Gustavo Rey, Stittsville, CA;
Jonathan Robert Gay, Vancouver, CA;
William Michael Lye, Coquitlam, CA;
Ognjen Katic, Vancouver, CA;
Terence K. W. Lau, Coquitlam, CA;
Jatinder Singh Chana, Burnaby, CA;
PMC-Sierra, Inc., Santa Clara, CA (US);
Abstract
An apparatus and method for jointly equalizing a return to zero (RZ) signal and detecting timing errors in the RZ signal, using values or indices from equalizer taps, including a set reference tap that does not shift. A timing error detector detects a timing error based on a group delay measured from the equalizer tap information, and then adjustment circuitry modifies samples of the received RZ signal prior to their equalization to offset that timing error. Methods of modifying the samples to offset the timing error include adjusting the timing of the sampler, or adjusting the sampled data using intermediate, interpolated samples generated by a timing interpolation filter.