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. 16, 2013
Filed:
May. 17, 2012
Man Cheung, Campbell, CA (US);
David Rutherford, San Jose, CA (US);
Jerry Richgels, San Jose, CA (US);
Perry Neos, Los Altos, CA (US);
Man Cheung, Campbell, CA (US);
David Rutherford, San Jose, CA (US);
Jerry Richgels, San Jose, CA (US);
Perry Neos, Los Altos, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
Apparatus, methods, and systems can be employed for calibrating servos, and in some implementations, spiral servos are calibrated for use in self-servo-write (SSW) processes. In an aspect, an apparatus includes a timing reference detector configured to determine timing reference information from a back electromotive force signal associated with a rotating machine readable medium, and a servo track window period generator configured to determine a relative location of a spiral on the rotating machine readable medium based on the timing reference information.