发明名称 |
High-density optical disc, method for recording and reproducing encrypted data thereon |
摘要 |
A high-density optical disc, a method for encrypting data and recording the encrypted data thereon, and a method for reproducing the encrypted data recorded thereon. A high-density optical disc such as a Blu-ray disc-read only memory (BD-ROM) has a helical track formed from the disc's outer periphery to the disc's inner periphery. An order of recording data frames on the BD-ROM is diametrically opposite to that of a rewritable optical disc such as a Blu-ray disc rewritable (BD-RE). Data can be encrypted using disc radius information or an address unit (AU) number contained in an AU and then the encrypted data is recorded on the high-density optical disc. Thus, a user holding the optical disc apparatus such as the BD-RE player can be prevented from unlawfully copying data of the BD-ROM to the BD-RE and unlawfully reproducing the copied data.
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申请公布号 |
US2004264694(A1) |
申请公布日期 |
2004.12.30 |
申请号 |
US20040485912 |
申请日期 |
2004.08.23 |
申请人 |
KIM JIN YONG;SUH SANG WOON |
发明人 |
KIM JIN YONG;SUH SANG WOON |
分类号 |
G11B7/00;G11B7/005;G11B7/007;G11B20/00;G11B20/10;G11B20/12;(IPC1-7):H04N7/167 |
主分类号 |
G11B7/00 |
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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