发明名称 |
Optical disk capable of disabling incompatible recorder |
摘要 |
An optical disk is compatible with one type of a recording apparatus which is designed to irradiate an optical beam onto the optical disk to form pits along the pregroove for actual recording of information. The optical disk is incompatible with another type of a recording apparatus which is designed to successively record the times of the test recording into a count area of the conventional optical disk. The optical disk has a test area corresponding to the test area of the conventional optical disk and a prepit area corresponding to the count area of the conventional optical disk, the prepit area being provisionally formed with prepits at least in a section corresponding to the predetermined section of the count area of the conventional optical disk so as to inhibit the other type of recording apparatus from conducting the test recording. |
申请公布号 |
US7277369(B2) |
申请公布日期 |
2007.10.02 |
申请号 |
US20020230573 |
申请日期 |
2002.08.29 |
申请人 |
YAMAHA CORPORATION |
发明人 |
MURATA MORIHIRO;HIRAI AKIO |
分类号 |
G11B7/0045;G11B7/007;G11B7/125;G11B7/24;G11B19/04;G11B20/18;G11B27/36 |
主分类号 |
G11B7/0045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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