Patent ID: 6154206
Filing Date: 2000-11-28
Classification: H04L,H04N

Abstract:
A communication network comprising:a) a receiver unit configured to receive information from a service provider and coupled to a serial communication network, said receiver unit comprising:a1) a first tuner configured to generate a first digital signal encoded under a first encryption format;a2) a second tuner configured to generate out-of-band (OOB) data, wherein said first digital signal and said OOB data are transmitted on said serial communication network; andb) a first conditional access (CA) unit coupled to said serial communication network configured to receive said first digital signal and said OOB data, said first CA unit configured to generate a first decrypted digital signal (DDS) based on said OOB data and said first encryption format, said first CA unit also configured to transmit said first DDS over said serial communication network.