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:
Mar. 05, 2013
Filed:
Feb. 13, 2009
Morio Nakatani, Ichinomiya, JP;
Masato Fuma, Ichinomiya, JP;
Kazuo Watabe, Minato-ku, JP;
Yutaka Kashihara, Minato-ku, JP;
Akihito Ogawa, Minato-ku, JP;
Yutaka Yamanaka, Minato-ku, JP;
Tatsunori Ide, Minato-ku, JP;
Shuichi Ohkubo, Minato-ku, JP;
Morio Nakatani, Ichinomiya, JP;
Masato Fuma, Ichinomiya, JP;
Kazuo Watabe, Minato-ku, JP;
Yutaka Kashihara, Minato-ku, JP;
Akihito Ogawa, Minato-ku, JP;
Yutaka Yamanaka, Minato-ku, JP;
Tatsunori Ide, Minato-ku, JP;
Shuichi Ohkubo, Minato-ku, JP;
Abstract
An optical disc has a read-only system lead-in area and a recordable data area. Disc boundary information representing a boundary in a radial direction of an area on which capability of recording at a predetermined recording speed is guaranteed is recorded on the system lead-in area while being related to each tuple speed. An optical disc device, upon user's instruction of tuple-speed recording, compares the boundary information related to the instructed tuple speed with a present recording position, performs recording at the instructed tuple speed if the present recording position is on the outside of the boundary, and performs recording at a tuple speed lower than the instructed tuple speed if the present recording position is on the inside of the boundary.