Multi-vendor conditional access system
An access system, conditional technology, applied in the field of smart cards, which can solve the problems of capital destruction of receiver infrastructure, lack of commercial incentives for receiver manufacturers, and end users' reluctance to buy set-top boxes.
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[0029] exist figure 1 A simplified schematic diagram of the architecture of the conditional access system 5 is shown in . The conditional access system 5 comprises a head-end system 2, a receiver 3A, 3B, a smart card 1A, 1B for the receiver 3A, 3B and a system for transmitting data from the head-end system 2 to the receiver 3A, 3B and the smart card 1A, 1B. Signal broadcast network4. Typically, a conditional access network includes many receivers and smart cards eg on the order of hundreds or thousands or even more. The head-end system 2 broadcasts encrypted television programs or other encrypted services to receivers 3A, 3B. In order to enable decryption of encrypted television programs in the receivers 3A, 3B, the head-end system 2 also broadcasts EMMs and / or ECMs, which are received in the receivers 3A, 3B and forwarded to the smart card 1A , 1B for processing. The head-end system 2 communicates with the smart cards 1A, 1B using vendor-specific technology (usually propr...
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