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. 09, 2013
Filed:
Jul. 11, 2006
Wilson Wong, San Francisco, CA (US);
Sergey Yuryevich Shumarayev, San Leandro, CA (US);
Rakesh Patel, Cupertino, CA (US);
Tim Tri Hoang, San Jose, CA (US);
Wilson Wong, San Francisco, CA (US);
Sergey Yuryevich Shumarayev, San Leandro, CA (US);
Rakesh Patel, Cupertino, CA (US);
Tim Tri Hoang, San Jose, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Methods and circuits for automatic adjustment of equalization are presented that improve the quality of equalization for input signals with varying amplitudes. The methods and circuits may be used in Decision Feedback Equalization (DFE) circuits to maintain a constant equalization boost amplitude despite variations in input signal amplitude. The equalization circuitry measures the amplitude of the equalization input signal and computes tap coefficients to maintain a desired level of boost amplitude. Tap coefficients may be automatically adjusted by the equalization circuitry.