BROADCAST TRANSCEIVER AND PCMCIA SCRAMBLER WITH RECEPTION LIMITATION FUNCTION IMPLEMENTED BY USING DVB-CI INTERFACE

摘要

The present invention relates to a broadcast transceiver with conditional access function implemented by using simple PCMCIA module and comprises: a demodulator which demodulates the input broadcast signal a PCMCIA scrambler module of DVB-CI standard which is inserted in a CI interface slot and scrambles at least a part of broadcast signal in a MPEG2 transport stream in the demodulated broadcast signal; a modulator which modulates the scrambled broadcast signal.;Additionally, the invention provides a PCMCIA scrambler comprising: a control word generator that generates a CW required for scrambling; a scrambler that scrambles TS (Transport Stream) using the CW; a control CPU that receives and processes the configuration information which prescribes the conditional access information concerning each channel, an encryption engine and table generator that encrypts the CW and also generates a table for each broadcast signal according to the configuration information and encrypted CW; a packet modifier that adds generated table to the PMT of the TS.