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. 31, 2010
Filed:
Nov. 10, 2006
Applicants:
Xiaotong Lin, San Jose, CA (US);
Andrei E. Vityaev, San Jose, CA (US);
Inventors:
Xiaotong Lin, San Jose, CA (US);
Andrei E. Vityaev, San Jose, CA (US);
Assignee:
Broadcom Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/09 (2006.01); G11B 20/14 (2006.01); G11B 20/16 (2006.01); H03H 7/30 (2006.01); H03H 7/40 (2006.01); H03K 5/159 (2006.01);
U.S. Cl.
CPC ...
Abstract
A technique to perform a guided partial response target search for characterizing a read channel of a disk drive. A target adaptation scheme pre-selects a plurality of targets from a pool of potential targets based on certain criteria and the selected targets are sorted in linear gradient orders. When target adaptation is being performed by comparing the equalizer output with an ideal reconstructed signal, a difference value sets a gradient vector that is used to determine which direction to move along the sorted list of targets to select the next target.