Patent ID: 8132222
Filing Date: 2012-03-06
Classification: H03H,H04N

Abstract:
1. An addressable tap unit for a cable television network, comprising: a radio frequency input that is configured to connect to the cable television network; a radio frequency receiver that is configured to receive a radio frequency signal input at the radio frequency input; a radio frequency output that is configured to be coupled to a first subscriber premise; and a plug-in filter circuit that is removably coupled between the radio frequency input and the radio frequency output, the plug-in filter circuit including a plurality of signal paths and a first filter that is on a first of the plurality of signal paths that filters out signals in one or more frequency bands; a plurality of switches that are configured to select one of the plurality of signal paths through the plug-in filter circuit, wherein the plurality of switches are controlled in response to data contained in the radio frequency signal; and an alternate radio frequency signal path between the radio frequency input and the radio frequency output that bypasses the plug-in filter circuit, wherein the addressable tap unit is configured so that signals incident at the radio frequency input traverse the alternate radio frequency signal path if the plug-in filter circuit is not installed in the addressable tap unit.