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. 11, 2000
Filed:
Feb. 28, 1997
William E Wevers, San Jose, CA (US);
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
The present invention is a method and apparatus for rewriting servo information on a disk of a hard disk drive. The old servo data is erased after the new servo data has been written, using a stagger erase method. A disk pack having n sides is provided, where each of the n sides has a plurality of tracks, and each side is divided into a plurality of sectors. A first set of servo information is written on an nth sector of a track on an nth side of said disk pack. This step is repeated for n=1 through n, for every sector of the track for each side of the disk pack. Next, data is erased from one of every n sectors of the track on each side of said disk pack. The entire process is repeated for a predetermined number of tracks on each side of the disk pack. In an alternate embodiment, the data is erased from a first track while the read/write heads of the hard disk drive are being moved from the first track to a second track.