DIGITAL BROADCAST COMMUNICATION SYSTEM AND METHOD OF SERVICE SCRAMBLING AND SIM CARD BASED DESCRAMBLING

摘要

The present invention is directed to a digital broadcast communication system with secure data transmission, scrambling and descrambling, which includes a, data transmitter and a data receiver for receiving a packetized transport stream from the data transmitter, and a digital media playback application for processing and descrambling the data received by the data receiver by utilizing a secure device such as a Subscriber Identification Module (SIM) which may completely or partially contain the descrambler program and protect the digital data from being extracted by potential hackers. During descrambling of the service, the descrambler program in the secure element takes the scrambled data service as input, and reproduces the descrambled data service.