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:
Aug. 21, 2001
Filed:
Oct. 22, 1999
Applicant:
Inventors:
Byron Esten Danzer, Aptos, CA (US);
Richard William Koralek, Palo Alto, CA (US);
David Bruce Isaksen, Mountain View, CA (US);
Assignee:
Wideband Computers, Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 5/12 ; H04L 5/16 ;
U.S. Cl.
CPC ...
H04L 5/12 ; H04L 5/16 ;
Abstract
A timing recovery system and method for QAM signals having different symbol rates are disclosed. After sampling the QAM baseband signal, a symbol timing recovery logic including a generator of a weighting function is utilized to develop a local error signal. The local error signal averaged over a predetermined time period is utilized to make a global decision regarding the sampling point position relative to the baseband signal maximum/minimum.