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. 05, 2016
Filed:
Oct. 27, 2008
George Mathew, San Jose, CA (US);
Yuan Xing Lee, San Jose, CA (US);
Hongwei Song, Longmont, CO (US);
Jeffrey P. Grundvig, Loveland, CO (US);
Viswanath Annampedu, Schnecksville, PA (US);
George Mathew, San Jose, CA (US);
Yuan Xing Lee, San Jose, CA (US);
Hongwei Song, Longmont, CO (US);
Jeffrey P. Grundvig, Loveland, CO (US);
Viswanath Annampedu, Schnecksville, PA (US);
Avago Technologies General IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
Various embodiments of the present invention provide systems and methods for determining changes in fly-height. For example, various embodiments of the present invention provide storage devices that include a storage medium having servo data thereon. A read/write head assembly is disposed in relation to the storage medium. A servo based fly-height adjustment circuit receives the servo data via the read/write head assembly, and calculates a first harmonics ratio based on the received data and compares the first harmonics ratio with a second harmonics ratio to determine an error in the distance between the read/write head assembly and the storage medium.