发明名称 |
Recording medium, information playback apparatus and method, and information recording and playback apparatus |
摘要 |
In a CD-DA, encoded content in which audio information is encoded using a content key, the content key, and two usage right files are recorded in predetermined regions. The usage right files are a CD-DA usage right file having CD-DA usage rights, and a CD-R usage right file having CD-R usage rights. The usage rights recorded in the CD-DA usage right file regulate the usage on a CD-DA. |
申请公布号 |
US7549176(B2) |
申请公布日期 |
2009.06.16 |
申请号 |
US20040887818 |
申请日期 |
2004.07.12 |
申请人 |
SONY CORPORATION |
发明人 |
EBIHARA MUNETAKE;HAYASHI TAKAMICHI;KATSUMATA MITSURU;ICHIKAWA HIROYUKI |
分类号 |
G06F7/04;H04N5/91;G11B7/005;G11B7/007;G11B19/02;G11B20/00;G11B20/10;G11B20/12;H04L9/00 |
主分类号 |
G06F7/04 |
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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