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:
Aug. 03, 2010
Filed:
Oct. 06, 2006
Seiro Oshima, Yamanashi, JP;
Toshihiko Takishita, Yamanashi, JP;
Eiji Muramatsu, Saitama, JP;
Hiroshi Nishiwaki, Saitama, JP;
Seiro Oshima, Yamanashi, JP;
Toshihiko Takishita, Yamanashi, JP;
Eiji Muramatsu, Saitama, JP;
Hiroshi Nishiwaki, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A recording layer close to a disc surface is divided into at least two recording areas, a main information recording area DA and an auxiliary information area (BCA) DC. Grooves are formed in the main information recording area DA. Marks M are formed in barcode form representing identifying information in the auxiliary information recording area (BCA) DC. Track grooves Gor prepits are formed in the recording layer of the auxiliary information recording area (BCA) DC and have a depth smaller than that of the groove formed in the main information recording area DA.