发明名称 |
Conditional access system for local storage device |
摘要 |
A technique for selectively inhibiting a video recorder from recording and/or reproducing those television programs, which are not authorized for viewing. Authorization data associated with respective television programs that are receivable by the recorder and indication of whether that program is authorized for recording and/or reproduction, is received by the recorder prior to (or multiplexed with) the television program and is stored thereat. When the television program is received, the stored authorization data associated with that is read to determine if the received television program is authorized for recording and/or reproduction. If not, the recorder is inhibited from recording and/or reproducing that unauthorized television program.
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申请公布号 |
US6104860(A) |
申请公布日期 |
2000.08.15 |
申请号 |
US19980179213 |
申请日期 |
1998.10.27 |
申请人 |
SONY CORPORATION;SONY ELECTRONICS INC. |
发明人 |
LEE, CHUEN-CHIEN;INOUE, HAJIME;GOTO, KOICHI |
分类号 |
H04N5/92;G11B20/10;H04N5/44;H04N5/7617;H04N5/765;H04N5/7826;H04N5/783;H04N5/913;H04N7/16;H04N7/24;H04N9/82;(IPC1-7):H04N5/91 |
主分类号 |
H04N5/92 |
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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