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:
Nov. 11, 2003
Filed:
Mar. 12, 1997
Tyson Tuttle, Austin, TX (US);
Diwakar Vishakhadatta, Austin, TX (US);
Jerrel P. Hein, Driftwood, TX (US);
David R. Welland, Austin, TX (US);
David E. Reed, Westminster, CO (US);
Richard T. Behrens, Louisville, CO (US);
William G. Bliss, Thornton, CO (US);
Paul M. Romano, Boulder, CO (US);
Trent O. Dudley, Littleton, CO (US);
Christopher P. Zook, Longmont, CO (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A sampled amplitude read channel incorporated within a magnetic disk storage system for reading data recorded tracks on a magnetic medium, where the data comprises user data sectors recorded at varying data rates across a plurality of predefined zones and embedded servo data sectors recorded at the same data rate across the zones. The read channel comprises a timing recovery component for synchronous sampling of a read signal from a magnetic read head positioned over the magnetic medium, a gain control component for adjusting the amplitude of the read signal, and a DC offset component for canceling a DC offset in the read signal. These components are dynamically configured to operate according to whether the read channel is processing user data or embedded servo data.