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:
May. 22, 2012
Filed:
Nov. 07, 2011
Man Cheung, Campbell, CA (US);
David Rutherford, San Jose, CA (US);
Jerry Richgels, Sunnyvale, CA (US);
Perry Neos, Los Altos, CA (US);
Man Cheung, Campbell, CA (US);
David Rutherford, San Jose, CA (US);
Jerry Richgels, Sunnyvale, CA (US);
Perry Neos, Los Altos, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
Methods, systems, and apparatus, including computer program products are described for calibrating servos, and in some implementations, calibrating spiral servos for use in self-servo-write (SSW) processes. In one aspect, a method is provided that includes determining timing reference information on a machine readable medium, locking a clock signal to the timing reference information, detecting a spiral on the machine readable medium, determining a location of the spiral using the clock signal, and calibrating a spiral servo according to the location of the spiral.