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:
Dec. 04, 2008
Viswanath Annampedu, Schnecksville, PA (US);
Terence Karanink, Center Valley, PA (US);
Xun Zhang, Westford, MA (US);
Jeffrey P. Grundvig, Loveland, CO (US);
Viswanath Annampedu, Schnecksville, PA (US);
Terence Karanink, Center Valley, PA (US);
Xun Zhang, Westford, MA (US);
Jeffrey P. Grundvig, Loveland, CO (US);
Avago Technologies General IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
Various embodiments of the present invention provide systems and methods for low overhead disk wobble compensation. As an example, a method for performing synchronous wobble compensation processing is disclosed. The method includes providing a medium that includes a servo data region and a user data region. The servo data region includes a clock recovery pattern and a location pattern. A detectable pattern is written to the user data region a known number of bit periods from the location pattern. The detectable pattern is read back, and a fractional processing delay is calculated. Based at least on the fractional processing delay and a known number of bit periods from the location pattern to the end of the servo data region, a wobble compensation pattern is written an integral number of bit periods from the location pattern.