Patent ID: 7974586

Claim:
An amplifier device for a cable antenna television system comprising: an amplifier for amplifying video/data signals having an input terminal, an output terminal, and a power terminal; at least a first video/data output port coupled to the output terminal of said amplifier; a cable drop input terminal for receiving VoIP, Internet, video and data signals; a power port for receiving a source of voltage, said power port being coupled to the power terminal of said amplifier; a source of reference potential; a modem port for connection to the modem of a user; a directional coupler having an input terminal connected to said cable drop input terminal, a first output terminal for outputting said VoIP and Internet signals to the modem port, and a second output terminal for outputting video and data signals to the input terminal of said amplifier; a 75 ohm resistor having a free end, and another end connected to the common connection between said directional coupler and said amplifier; and switching circuit means responsive to the loss of power or voltage to said amplifier, for electrically connecting the free end of said resistor to said source of reference potential.