发明授权
EP1595399B1 SYSTEME DE TELEVISION A PEAGE, PROCEDE DE REVOCATION DE DROITS DANS UN TEL SYSTEME, DECODEUR ET CARTE A PUCE ASSOCIES, ET MESSAGE TRANSMIS A UN TEL DECODEUR
有权
付费电视法了权利摘要：在这种系统中，相关解码器和芯片卡和解码器此类消息TRANSFERRED
- 专利标题： SYSTEME DE TELEVISION A PEAGE, PROCEDE DE REVOCATION DE DROITS DANS UN TEL SYSTEME, DECODEUR ET CARTE A PUCE ASSOCIES, ET MESSAGE TRANSMIS A UN TEL DECODEUR
- 专利标题（英）： Pay television, method for revoking rights in such a system, associated decoder and smart card, and message transmitted to such a decoder
- 专利标题（中）： 付费电视法了权利摘要：在这种系统中，相关解码器和芯片卡和解码器此类消息TRANSFERRED
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申请号： EP04706694.9申请日： 2004-01-30
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公开(公告)号： EP1595399B1公开(公告)日： 2006-11-22
- 发明人: DAUVOIS, Jean-Luc
- 申请人： Canal + Technologies
- 申请人地址： 34, Place Raoul Dautry 75015 Paris FR
- 专利权人： Canal + Technologies
- 当前专利权人： Canal + Technologies
- 当前专利权人地址： 34, Place Raoul Dautry 75015 Paris FR
- 代理机构： Weihs, Bruno Konrad
- 优先权： FR0301243 20030204
- 国际公布： WO2004071087 20040819
- 主分类号： H04N7/16
- IPC分类号： H04N7/16 ; H04N7/167
摘要：
The invention concerns a method for revoking access rights to an audio-visual programme received by a decoder (11) comprising the following steps: transmitting first messages (ECM) containing encrypted control words, each control word (CW) being used to descramble for a given time period the audio-visual signal received, second messages (EMM) comprising each data allocating user rights; decrypting in the decoder, or a portable object associated therewith, the first messages to produce control words (CW) for descrambling said audio-visual signal received by the decoder (11), transmitting third hybrid messages resulting each from the combination of at least one encrypted control word (CW), a decoder address and a right revoking information.
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