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. 16, 2000
Filed:
Mar. 31, 1998
Koki Tanoue, Yokohama, JP;
Hideaki Osawa, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A first-half header portion constituted by a first header portion whose VFO portion as long repeated data is arranged at the start and a second header portion whose VFO portion as short repeated data is arranged at the start is used as the header portion of each of land sectors arranged in a predetermined number along a spiral track. A second-half header portion constituted by a third header portion whose VFO portion as long repeated data is arranged at the start and a fourth header portion whose VFO portion as short repeated data is arranged at the start is used as the header portion of each of groove sectors arranged in a predetermined number along a spiral track. These land and groove sectors are continuously alternated in units of spiral tracks.