Invention Application
WO1996016401A1 MARKING GENERATING APPARATUS, METHOD OF FORMING LASER MARKING ON OPTICAL DISK, REPRODUCING APPARATUS, OPTICAL DISK AND OPTICAL DISK PRODUCING METHOD
审中-公开
标记生成装置，在光盘上形成激光标记的方法，再现装置，光盘和光盘制造方法
- Patent Title: MARKING GENERATING APPARATUS, METHOD OF FORMING LASER MARKING ON OPTICAL DISK, REPRODUCING APPARATUS, OPTICAL DISK AND OPTICAL DISK PRODUCING METHOD
- Patent Title (中): 标记生成装置，在光盘上形成激光标记的方法，再现装置，光盘和光盘制造方法
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Application No.: PCT/JP1995002339Application Date: 1995-11-16
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Publication No.: WO1996016401A1Publication Date: 1996-05-30
- Inventor: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , OSHIMA, Mitsuaki , GOTOH, Yoshiho
- Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- Assignee: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- Current Assignee: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- Priority: JP6/283415 19941117; JP7/16153 19950202; JP7/261247 19951009
- Main IPC: G11B07/00
- IPC: G11B07/00
Abstract:
The invention improves the duplication prevention capacity in comparison with the prior art. In the optical disk according to the present invention, for example, marking is made on a reflection film of the disk on which data are written by a laser beam, at least the position information of the marking or information on the position information is written on the disk in the form of cipher or digital signature.
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