초록 ▼

A digital video conversion system housing multiple converter chains of units in a single main box chassis. A preferred embodiment uses only a single conditional access unit to authorize decryption of premium channels in response to a smartcard. The conversion system allows a single converter box sha

A digital video conversion system housing multiple converter chains of units in a single main box chassis. A preferred embodiment uses only a single conditional access unit to authorize decryption of premium channels in response to a smartcard. The conversion system allows a single converter box sharing consolidated decryption (access control) circuitry and a single remote control receiver to provide video output for multiple television sets on the subscriber's premises. In addition to reducing the subscriber's hardware costs per television set, a common access control allows the video service provider to grant a multiple-set discount on a single smartcard.

대표청구항 ▼

[ I claim:] [1.] A digital video conversion system comprising:a chassis having a plurality of outputs, each output being adapted to provide a decrypted television signal for delivery to an individual television set;a plurality of converter chains housed within said chassis, each chain including at l

[ I claim:] [1.] A digital video conversion system comprising:a chassis having a plurality of outputs, each output being adapted to provide a decrypted television signal for delivery to an individual television set;a plurality of converter chains housed within said chassis, each chain including at least a tuner and a demodulator;at least one conditional access unit, housed within said chassis, connected to said plurality of converter chains and having an authorization input, for decrypting digital demodulated signals from said plurality of converter chains upon receiving an authorized input through the authorization input; andat least one remote control receiver unit, housed within said chassis, responsive to commands from individual remote controls associated with the individual television sets for controlling said converter chains and said at least one conditional access unit.