Digital compression of video signals will provide a breakthrough in TV broadcasting market by enabling the transmission of several TV programmes per channel. Moreover the digital technology for transmission will allow to provide the consumer with various services such as:
TV programmes with several stereo sounds.
Stereo sound radio programmes.
Data transmission ...
The tremendous increase in number and type of services will require a permanent use of conditional access. In Europe, the EUROCRYPT standard has been defined for the MAC transmission requiring conditional access. The module in charge of the conditional access jUnction is a Smart Card.