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:
May. 26, 2009
Filed:
Jun. 27, 2007
Katsuki Ueda, Ome, JP;
Yuichi Notake, Tokyo, JP;
Masahide Yatsu, Akishima, JP;
Hideo Sado, Ome, JP;
Seiji Mizukoshi, Nishitama-gun, JP;
Takuji Shimada, Ome, JP;
Takayuki Matsuzaki, Hamura, JP;
Katsuki Ueda, Ome, JP;
Yuichi Notake, Tokyo, JP;
Masahide Yatsu, Akishima, JP;
Hideo Sado, Ome, JP;
Seiji Mizukoshi, Nishitama-gun, JP;
Takuji Shimada, Ome, JP;
Takayuki Matsuzaki, Hamura, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, in a disk drive having a disk medium on which servo data is recorded, servo-write management information is recorded on the disk medium, in the form of binary data based on the 0 or 180 degrees out of phase pattern composed of the servo burst signals included in the servo data and being out of phase. The disk drive includes a servo-data reproducing unit that reproduces the servo-data and the servo-write management information.