发明名称 |
CONTENT PROTECTION SYSTEM |
摘要 |
The digital broadcast receiver 1 comprises: a signal input unit 10 for receiving a received broadcast wave; a demodulation unit 11 for demodulating the broadcast wave; an external module 12; an external module I/F (Interface) 13 for connecting the receiver 1 to the external module 12; a decoding unit 14 for extracting necessary information containing a target content from the received signal; an output unit 15 for outputting actual video/audio; a control unit 16 for controlling the entire receiver 1; and a user I/F 17 for transmitting and receiving information to/from a user. Further, there are provided: a packet processing unit 101 that is located between the demodulation unit 11 and the external module I/F 13, that monitors all the packets contained in a TS, and that performs a predetermined processing on packets matched with a predetermined condition; and a TS selector 102 that is located between the external module I/F 13 and a bus line BL and that selects and outputs one designated TS of the two TSs. In this way, non-encrypted contents can be protected with ease when the TS outputted to the external module is accessed in an unauthorized way. |
申请公布号 |
EP1845726(A4) |
申请公布日期 |
2009.03.18 |
申请号 |
EP20050738921 |
申请日期 |
2005.05.12 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
MATSUMOTO, TOMOYUKI;MITANI, JUNJI |
分类号 |
G06F12/14;G06F21/62;H04B1/06;H04N7/173;H04N21/436;H04N21/4385 |
主分类号 |
G06F12/14 |
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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