发明名称 |
INFORMATION RECORDING METHOD AND DEVICE, AND INFORMATION RECORDING MEDIUM |
摘要 |
Content information (CI) is recorded, and then control information including an encryption key is recorded. The area in which the content information (CI) is written is shifted with respect to the user area (UIA) in a playback-only disc. The control information (SI) is written with an identical shift. As a result of the shift, content information (CI) or dummy data (DD) is written in the area (SIA) in which control information is recorded in a playback-only disc. Information indicating the value of the shift is selected randomly and deleted when the disc is removed from the recording apparatus. When encrypted content is downloaded and recorded on a recordable optical disc, the complete content can be recorded on the disc correctly just once.
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申请公布号 |
EP2189983(A1) |
申请公布日期 |
2010.05.26 |
申请号 |
EP20080740717 |
申请日期 |
2008.04.21 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
NAKANE, KAZUHIKO |
分类号 |
G06F21/00;G11B20/00;G11B20/12;G11B21/00;H04N5/765;H04N5/913 |
主分类号 |
G06F21/00 |
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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