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. 12, 2005
Filed:
Feb. 13, 2002
James Howard Eaton, Morgan Hill, CA (US);
Wayne Isami Imaino, San Jose, CA (US);
Tzong-shii Pan, San Jose, CA (US);
James Howard Eaton, Morgan Hill, CA (US);
Wayne Isami Imaino, San Jose, CA (US);
Tzong-Shii Pan, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A servo writer generates a linear servo track timing based servo pattern comprised of transitions that extend laterally of the track. At least three spaced apart write elements, two of parallel azimuthal orientation, and at least one of a different azimuthal orientation, write patterns corresponding to the write elements, fixing both the distance between transitions having different azimuthal orientation, the 'A' distance, and the distance between transitions having parallel azimuthal orientation, the 'B' distance. The fixed distances provide precise sensing of lateral position based on a measure of time over the “A” distance compared to time over the “B” distance.