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:
Dec. 30, 2008
Filed:
May. 12, 2005
Akihito Ogawa, Kawasaki, JP;
Yutaka Kashihara, Chigasaki, JP;
Hideki Takahashi, Kashiwa, JP;
Yutaka Yamanaka, Tokyo, JP;
Shigeru Shimonou, Tokyo, JP;
Tatsunori Ide, Tokyo, JP;
Akihito Ogawa, Kawasaki, JP;
Yutaka Kashihara, Chigasaki, JP;
Hideki Takahashi, Kashiwa, JP;
Yutaka Yamanaka, Tokyo, JP;
Shigeru Shimonou, Tokyo, JP;
Tatsunori Ide, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An optical disk medium in which a learning area can be expanded, an optical disk information recording method and an optical disk apparatus are provided. A first lead-in area and second lead-in area are provided on the inner side and outer side of a data area. The first lead-in area includes a first learning area, management information recording area and data connection area and the second lead-in area includes a protection area which protects the user data in the inner portion thereof and a second learning area which is provided on the outer side of the protection area and sets an optimum condition for an operation of recording data into the data area. An area in which information indicating the utilization state of the protection area is recorded is prepared in one of the management information recording area and data connection area.