发明名称 |
BROADCAST RECEPTION TERMINAL AND BROADCAST RECEPTION METHOD |
摘要 |
A broadcast receiving terminal includes a conditional access system (CAS) module that acquires key information from a broadcast signal and a renderer that plays back video/audio data in the broadcast signal. The CAS module includes a history information storage unit that stores playback history information and a playback time calculation unit that calculates playback remaining time information related to the video/audio data and sends a scrambling key and the playback remaining time information to the renderer. The renderer includes a descrambling unit and a decoding unit that decrypts the video/audio with the scrambling key to play them back and send history information related to the playback to the CAS module and a preview control unit that performs control to decrypt the video/audio data only for the time indicated by the playback remaining time information. The terminal achieves playback control in accordance with an actual playback time.
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申请公布号 |
US2012250861(A1) |
申请公布日期 |
2012.10.04 |
申请号 |
US201013510025 |
申请日期 |
2010.09.06 |
申请人 |
ISHII KOJI;SASAO NOBUAKI;NTT DOCOMO, INC |
发明人 |
ISHII KOJI;SASAO NOBUAKI |
分类号 |
H04N7/167 |
主分类号 |
H04N7/167 |
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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