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. 27, 2010
Filed:
May. 15, 2008
Takeshi Hara, Kawasaki, JP;
Yoshifumi Obara, Higashine, JP;
Yukio Abe, Kawasaki, JP;
Shigenori Yanagi, Kawasaki, JP;
Mitsuo Kamimura, Kawasaki, JP;
Takeshi Hara, Kawasaki, JP;
Yoshifumi Obara, Higashine, JP;
Yukio Abe, Kawasaki, JP;
Shigenori Yanagi, Kawasaki, JP;
Mitsuo Kamimura, Kawasaki, JP;
Toshiba Storage Device Corporation, Tokyo, JP;
Abstract
A storage device receives and holds a storage medium that is subjected to first servo writing processing for writing servo information, a Gray code of which is offset, from an inner cylinder or an outer cylinder to a predetermined cylinder and, after the first servo writing processing, subjected to second servo writing processing for writing servo information from an opposite direction to the predetermined cylinder and in which Gray codes are written to be offset not to overlap in the first or second servo writing processing and the pieces of servo information having different mark patterns are written in the first servo writing processing and the second servo writing processing. The storage device acquires cylinder information and mark patterns from the servo information written in the held storage medium and controls a position of a head based on the acquired cylinder information and mark patterns.