发明名称 A method and an apparatus of exercising access control over television programs
摘要 The present invention is directed to a television schedule system (1) with a user interface (38) which allows a user to control access to television programs by time, rating, content and/or channel. Furthermore, the user may set a limit on pay-per-view (PPV) spending to limit the purchase of PPV programs.
申请公布号 KR100680932(B1) 申请公布日期 2007.02.08
申请号 KR20057020602 申请日期 2005.10.28
申请人 发明人
分类号 H04N5/445;H04N5/76;H04N7/088;H04N7/10;H04N7/16;H04N21/41;H04N21/442;H04N21/45;H04N21/454;H04N21/472;H04N21/475 主分类号 H04N5/445
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