Importance

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Abstract

There is disclosed a wired television system comprising a source of television signals supplying signals to a transmission network, subscriber stations connected to the network, means for preventing reception of transmitted signals by at least one subscriber station, and means for overriding the preventing means to enable that subscriber to receive the transmitted signals. The television signals are heterodyned with a scrambling signal to provide the transmitted signals, and the scrambling signal is transmitted over the network. At the subscriber station, the transmitted signals and the scrambling signal are heterodyned to recover the television signal.

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First Claim