| 摘要 |
The invention relates to a video signal decoder system, in which the decoder (BASE) comprises decrypting means (2) which provide the decryption key and authorization data (14) to the picture generating means (4), which generates a decrypted television picture based on the received key and authorization data (14). The system further comprises a smart card interface (3, 5), whereby a smart card (SC) can be connected to the decoder (BASE), the smart card containing encryption means (6). The decoder (BASE) can obtain key and authorization data (21) from the smart card (SC) when it is connected to the decoder, whereby the the decryption means (6) of the smart card supplies the key and authorization data (21) through the smart card interface (3, 5) to the picture generating means (4) of the decoder (BASE). <IMAGE> |
