FYI: Comcast digital TV in Cambridge

[Tom Metro]

Mark J. Dulcey wrote:
> Addressable taps don't work with digital cable. In the digital feed 
> there is not a set frequency for a given channel; many channels are 
> multiplexed together. If you blocked a frequency range, it would take 
> out some channels that the subscriber is supposed to get along with the 
> ones that he is not.

I'm aware of that, and you're right. A traditional programmable tap 
would be a blunt instrument and require the cable company to coarsely 
partition the spectrum.

But that's not to say the equivalent couldn't be developed for digital 
channels. It would just be more challenging and costly initially.

  -Tom

-- 
Tom Metro
Venture Logic, Newton, MA, USA
"Enterprise solutions through open source."
Professional Profile: http://tmetro.venturelogic.com/