Invention Grant
- Patent Title: Optical disc
- Patent Title (中): 光盘
-
Application No.: US11543797Application Date: 2006-10-06
-
Publication No.: US07768901B2Publication Date: 2010-08-03
- Inventor: Seiro Oshima , Toshihiko Takishita , Eiji Muramatsu , Hiroshi Nishiwaki
- Applicant: Seiro Oshima , Toshihiko Takishita , Eiji Muramatsu , Hiroshi Nishiwaki
- Applicant Address: JP Tokyo
- Assignee: Pioneer Corporation
- Current Assignee: Pioneer Corporation
- Current Assignee Address: JP Tokyo
- Agency: Arent Fox LLP
- Priority: JP2005-295203 20051007
- Main IPC: G11B7/24
- IPC: G11B7/24
Abstract:
A recording layer close to a disc surface is divided into at least two recording areas, a main information recording area D1A and an auxiliary information area (BCA) D1C. Grooves are formed in the main information recording area D1A. Marks M are formed in barcode form representing identifying information in the auxiliary information recording area (BCA) D1C. Track grooves G1 or prepits are formed in the recording layer of the auxiliary information recording area (BCA) D1C and have a depth smaller than that of the groove formed in the main information recording area D1A.
Public/Granted literature
- US20070081437A1 Optical disc Public/Granted day:2007-04-12
Information query
IPC分类:
