Satellite signal receive and method of conditionally accessing digital TV program by using the same

摘要

A satellite signal receiver includes a downconverter, a GPS chip and a transmission controller. The downconverter downconverts satellite signal of digital television into baseband signal for output to the transmission controller. The GPS chip scrambles and encrypts GPS signal into address data and outputs address data to the transmission controller for enabling the transmission controller to convert address data into analog signal for output with the baseband signal to a set-top-box, which converts analog address data into digital GPS signal and compares it with an authorization address carried in the satellite signal and then outputs authorized digital television satellite signal when the comparison is matched.