Title: Remote unit for a two-way cable communications system

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Abstract: A two-way cable communications system includes a master station having a transmitter for transmitting television program and interrogation signals to a plurality of remote units or transceivers through a cable network and a receiver for receiving reply signals from individual ones of the remote units. Each remote unit includes a receiver for receiving the program and interrogation information from the master station, a transmitter for transmitting reply signals back to the master station and television converter and receiver means for reproducing the television programs. A remote control means coupled to the remote unit through a mmulticonductor cable includes a channel selector and encoder means for encoding the channel selector information and a switch means to enable the channel selector to be utilized to provide viewer response information. The output of the encoder means is clocked into a storage register having its output coupled to a converter which operates a television tuner when the switch means is in a first condition. The output of the storage register is also coupled to a data readout circuit which is enabled by an interrogation signal to apply the data to the remote transmitter. The encoder output is also applied to a gating circuit which is enabled when the switch means is in a second condition to couple the output to the data readout circuit. Thus both program rating and viewer response information may be obtained from the remote channel selector control.


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