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:
Jan. 30, 2001
Filed:
Sep. 25, 1998
Shawn A. Wakefield, Norman, OK (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
An apparatus and method are disclosed for optimizing write performance of a disc drive through the use of write thresholds that are adaptive by head and by disc location. The disc drive has a head which is controllably positionable adjacent each of a plurality of nominally concentric tracks defined on a rotatable disc, which selectively magnetizes the tracks to write data to the tracks. A servo circuit of the disc drive controls the position of the head and prevents the head from writing data to the tracks until the head is positioned within write thresholds which are separately defined for each of the tracks. The write thresholds for each of the tracks are stored in memory and accessed by a digital signal processor of the servo circuit at the commencement of each write operation by the disc drive.