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:
Feb. 06, 2007
Filed:
Nov. 01, 2005
Shinichirou Kouhara, Hino, JP;
Masahide Yatsu, Akishima, JP;
Masafumi Iwashiro, Ome, JP;
Hideo Sado, Ome, JP;
Seiji Mizukoshi, Nishitama-gun, JP;
Shinichirou Kouhara, Hino, JP;
Masahide Yatsu, Akishima, JP;
Masafumi Iwashiro, Ome, JP;
Hideo Sado, Ome, JP;
Seiji Mizukoshi, Nishitama-gun, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
When a sub-track having burst data A and D, a sub-track having burst data A and C, a sub-track having burst data B and C, and sub-track having burst data B and D are repeatedly arranged in this order, in accordance with equations 1 and 2, a sub-track t included in a track T determines the value of a constant n within a range of 1.2 (inclusive) to 1.8 (inclusive) so as to obtain linearity between a position in a disc radial direction r and a head position P in a disc radial direction r in the sub-track t. Subsequently, the head position P is calculated using the determined constant n and equations 1 and 2:=()*||(−1)/(|)  (1)=()*||(−1)/(|)  (2)