I did a search, and saw a thread for analogue software-based signal descramblers, but never saw these covered here - if they were, sorry: Our filters, also called DIGITAL CABLE TV DESCRAMBLER FILTER ...

i have a cable line in my room which splits into two lines. one for cable tv and one for internet. i hear you have to put in a filter when you use it at the same time or else there is.. "signal noise" ...