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:
Oct. 02, 2012
Filed:
Aug. 02, 2006
BO Shen, Shanghai, CN;
Liping Chen, Shanghai, CN;
Bo Shen, Shanghai, CN;
Liping Chen, Shanghai, CN;
Entropic Communications, Inc., San Diego, CA (US);
Abstract
A baud rate acquisition circuit () for synchronizing a sampling signal with an input signal operates in broad rate sweeping and a rate fine tuning phases. In the rate sweeping phase, a timing error detector () examines the sampling signal generated by a decimator (). If the sampling signal is outside a rate acquisition range from the target rate, a rate sweeping algorithm selects a new sampling rate. In response to the sampling rate within the rate acquisition range, the timing error detector () examines the asymmetry thereof to generate a rate correction signal to synchronize the sampling signal with the input signal. Next in the rate fine tuning phase, a multiplexer () routes the sampling signal through a square root filter (). By examining the waveform shaped signal, the time error detector () synchronizes the sampling signal with the input signal with high accuracy.