Patent ID: 6014547
Filing Date: 2000-01-11
Classification: A61M,F16L,H04N

Abstract:
A settop terminal for receiving a CATV signal comprising a plurality of channels over a transmission bandwidth, each channel for carrying information; the settop terminal comprising:means for preprocessing said CATV signal to equalize each of said plurality of channels to a desired level, said preprocessing means comprising:means for monitoring a channel at a lower frequency of said bandwidth and a channel at a higher frequency of said bandwidth;means for determining the signal strength at said lower and higher frequencies;means for calculating an attenuation profile from said determination; andmeans for selectively attenuating the signal strength of a channel in response to said attenuation profile; andchannel selection means for selecting one of said equalized channels;a selectable filter having:a plurality of bandpass filters, each bandpass filter having a different passband encompassing at least two of said equalized channels; andmeans for activating in response to said channel selection means one of said bandpass filters to filter said selected channel with a bandpass filter including the frequency of said selected channel; andmeans for providing, from said selected channel, a baseband signal comprising said information for output to a display.