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:
Mar. 30, 2004
Filed:
Jul. 13, 2001
Don Brunnett, Pleasanton, CA (US);
Lloyd Levy, San Jose, CA (US);
Maxtor Corporation, Longmont, CO (US);
Abstract
A method and apparatus for writing servo information to disks within a disk drive is disclosed. A servo track writer is used to write first servo information to the disks. The disk drive is then sealed, and the read/write heads within the disk drive are used to fill in second servo information. The first servo information includes digital information and A, B, C, and D servo bursts for a first number of tracks on the disks. The first servo information also includes digital information and A and B servo bursts for the remaining tracks on the disks. After the disk drive is sealed in the manufacturing process, the read/write heads within the disk drive fill in the second servo information, which includes C and D servo bursts for the remaining tracks. The read head reads the first servo information in the first number of tracks, and the position of the write head is adjusted based on the first servo information. The write head is then used to write the second servo information to a first remaining track, resulting in complete servo information for the first remaining track. The read head then reads the complete servo information in the first remaining track, and writes the second servo information for a second remaining track. This continues until the complete servo information is propagated to all of the remaining tracks.