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:
Feb. 16, 2010
Filed:
Aug. 15, 2006
Tulsi Manickam, Rancho Pensaquitos, CA (US);
Peter J. Sallaway, San Diego, CA (US);
Sreen A. Raghavan, La Jolla, CA (US);
Abhijit M. Phanse, Cupertino, CA (US);
James B. Wieser, Pleasanton, CA (US);
Tulsi Manickam, Rancho Pensaquitos, CA (US);
Peter J. Sallaway, San Diego, CA (US);
Sreen A. Raghavan, La Jolla, CA (US);
Abhijit M. Phanse, Cupertino, CA (US);
James B. Wieser, Pleasanton, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A receiver system contains an analog pre-filter (207 or 619), an analog-to-digital converter (210), a digital equalizer (212), and a decoder (605) arranged sequentially for processing an input analog signal (y). The pre-filter produces a filtered analog signal (Z) with reduced intersymbol interference. The converter provides analog-to-digital signal conversion. Digital equalization circuitry in the equalizer operates according to a transfer frmnction to produce an equalized digital signal (a') as a stream of equalized digital values. Coefficients cand care fixed. Each other coefficient cis adaptively chosen. The decoder converts the equalized digital values, or intermediate values generated therefrom, into a stream of symbols. A receiver system may include two or more receivers each configured in the foregoing way with the digital equalization circuitry in each receiver operating according to a transfer function where at least coefficients c, c, and care non-zero.