[LINK] VCR control in the datastream

[Adam Todd]

>Remember me saying we should do this? and Stewart saying it broke the
>implied social contract between the free-to-air-but-commercial stations
>and the advertisers?

Oh this is ancient!  You can do that in Australia. It's not hard and there 
are decoders about. You just need to interface it to your VCR, which most 
people aren't keen on doing.

> > had the capability to key off of a signal in the broadcast signal. This
> > "off" signal, and it's corresponding "on" signal, were sent, respectively,
> > before and after commercial messages. I have yet to see that feature in any
> > VCRs in the US market. :-)

I've got a circuit somewhere.  There were three versions.  One that turned 
the audio off during the ads and back on afterwards another that started 
and stopped the recording of your VCR for ad free recording and another 
than beeped loud at the end of an ad break to tell you the show was back on!