发明名称 |
System and method for controlling copying and playing of digital programs |
摘要 |
A system and method for preventing effective copying of digital recordings. A copy-state code accompanies each recording, one state of which represents that no copies at all are to be made of the recording. Compatible players are designed to prevent play of any writable disk which includes a "no-copy" code. It is the inconsistency between the code and the medium containing it that causes play of the medium to be inhibited.
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申请公布号 |
US5896454(A) |
申请公布日期 |
1999.04.20 |
申请号 |
US19960612567 |
申请日期 |
1996.03.08 |
申请人 |
TIME WARNER ENTERTAINMENT CO., L.P. |
发明人 |
COOKSON, CHRISTOPHER J.;OSTROVER, LEWIS S. |
分类号 |
G11B20/10;G11B20/00;G11B23/28;H04N5/913;(IPC1-7):H04N7/167 |
主分类号 |
G11B20/10 |
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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