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:
Oct. 23, 2001
Filed:
Aug. 12, 1999
Applicant:
Inventors:
Yuzo Seo, Kanagawa, JP;
Hiroyuki Ikeda, Kanagawa, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/596 ; G11B 5/09 ;
U.S. Cl.
CPC ...
G11B 5/596 ; G11B 5/09 ;
Abstract
A recording disk has a data area and a servo-burst area alternately arranged with each other in the circumferential direction of the disk. The servo-burst area has a servo-burst pattern having signal sections and non-signal sections arranged with a period &lgr; in the radial direction of the disk. The period &lgr; is expressed by &lgr;=2p×n/m in terms of track pitch “p” of the disk, wherein n and m are integers prime to each other provided that n/m<2.