| 摘要 |
When a use permission information detecting unit detects restrictive use permission information, time shift start information, and time shift end information from a reproduced video signal S6 supplied thereto, the use permission information detecting unit forms a use prohibition control signal S7 and supplies it to a use prohibition processing unit. The use prohibition processing unit erases the video signal recorded on a recording medium, on which the restrictive use permission information is add, in accordance with the use prohibition control signal S7 and the like, and makes it impossible to use the video signal repeatedly.
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