Invention Grant
- Patent Title: Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk
- Patent Title (中): 光盘，光盘条形码形成方法，光盘再现装置，标记形成装置，在光盘上形成激光标记的方法以及制造光盘的方法
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Application No.: US12397742Application Date: 2009-03-04
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Publication No.: US08014236B2Publication Date: 2011-09-06
- Inventor: Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
- Applicant: Yoshiho Gotoh , Mitsuaki Oshima , Shinichi Tanaka , Kenji Koishi , Mitsuro Moriya
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: RatnerPrestia
- Priority: JP7-261247 19951009; JP8-008910 19960123
- Main IPC: H04L9/00
- IPC: H04L9/00 ; H04N7/167
Abstract:
Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
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