发明名称 |
Öffentliches Kommunikationssystem mit verteilten Stationen sowie Station und Unterstationen zur Verwendung in einem derartigen Kommunikationssystem. |
摘要 |
<p>A public communication system for encrypted audio/video information has various selective entitlement organizations with respect to its distributed receiver station. Such receiver station comprises one or more receiver sub-stations for decrypting the received encrypted information by means of a decrypting key. Furthermore, the receiver station comprises one or more decription key sub-stations that may be interrogated by the receiver sub-stations and thereupon may verify a conditional access requirement, and in case of positive verification, forward decryption key information to the interogating receiver sub-station. All said sub-stations are interconnected by a serial standard bus, so that the configuration of a station is flexibile and may even be altered dynamically.</p> |
申请公布号 |
DE69011543(T2) |
申请公布日期 |
1995.03.02 |
申请号 |
DE1990611543T |
申请日期 |
1990.02.02 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN, EINDHOVEN, NL |
发明人 |
WELMER, HARM JAN, NL-5656 AA EINDHOVEN, NL |
分类号 |
H04H20/00;H04N7/16;H04N7/167;(IPC1-7):H04N7/167 |
主分类号 |
H04H20/00 |
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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