发明名称 |
Digital broadcasting receiving apparatus |
摘要 |
Channel selection unit selects a channel of a desired program from a digital broadcast signal in which an ECM and an EMM are multiplexed. Separation unit separates the ECM and the EMM. EMM decoder decodes the EMM. A first key is obtained from the decoded EMM. ECM decoder decodes the separated ECM using the first key. A second key is obtained from the decoded ECM. Viewing enabling determination unit determines whether or not to enable viewing of the program. A system controller communicates with an information server through a network interface part at the time of work key non-setting, and an OSD display processing unit is made to generate an image for displaying information provided.
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申请公布号 |
US2006126839(A1) |
申请公布日期 |
2006.06.15 |
申请号 |
US20050266391 |
申请日期 |
2005.11.04 |
申请人 |
KOIKE MASAKAZU;OOI SHINICHI;YOSHIDA OSAMU;KUROIWA WATARU |
发明人 |
KOIKE MASAKAZU;OOI SHINICHI;YOSHIDA OSAMU;KUROIWA WATARU |
分类号 |
H04N7/167;H04B1/16;H04H20/00;H04H60/23;H04H60/27;H04H60/82 |
主分类号 |
H04N7/167 |
代理机构 |
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代理人 |
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地址 |
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