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. 31, 2006
Filed:
Nov. 04, 2003
Jingsong Xia, Mundelein, IL (US);
Richard W. Citta, Oak Park, IL (US);
Scott M. Lopresto, Mount Prospect, IL (US);
Wenjun Zhang, Shanghai, CN;
Hangbin Song, Toronto, CA;
Jingsong Xia, Mundelein, IL (US);
Richard W. Citta, Oak Park, IL (US);
Scott M. LoPresto, Mount Prospect, IL (US);
Wenjun Zhang, Shanghai, CN;
Hangbin Song, Toronto, CA;
Micronas Semiconductors, Inc., Palatine, IL (US);
Abstract
An adaptive equalizer comprises a decision device; a decision feedback equalizer coupled to the decision device; an FIR filter coupled to the decision device; and a trellis decoder coupled to the decision device, adapted to provide a reliability output and a decoded output. An error signal is generated by subtracting an output of the decision feedback equalizer from an output of the decision device, the error signal being used to update coefficients of the taps of the FIR filter and the decision feedback equalizer. A magnitude of the change to the coefficients is selected based at least in part the reliability output of the trellis decoder.