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. 17, 2009
Filed:
Feb. 17, 2004
Applicants:
Yutaka Yamanaka, Tokyo, JP;
Kinji Kayanuma, Tokyo, JP;
Chosaku Noda, Tokyo, JP;
Hiroharu Satoh, Tokyo, JP;
Hideaki Ohsawa, Tokyo, JP;
Inventors:
Yutaka Yamanaka, Tokyo, JP;
Kinji Kayanuma, Tokyo, JP;
Chosaku Noda, Tokyo, JP;
Hiroharu Satoh, Tokyo, JP;
Hideaki Ohsawa, Tokyo, JP;
Assignees:
NEC Corporation, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
The length of a format modulation area in an address segment is limited to be 25% of the address-segment length or less, and the position of the format modulation area is selectable two possible positions. Subsequently, where a CLV optical-disk medium is used, wobble modulation areas in adjacent recording tracks do not overlap each other in the radius direction.