At 11:11 AM 12/10/98 -0500, jfoust(a)threedee.com wrote:
And many different
digital services are encoded in the video blanking interval of
TV signals - closed captioning, timestamps, and program
information, among others.
I'm quite familiar with info stuffed in the video blanking
interval and other scanlines (once upon a time in '82 or so,
I interfaced a RSTS dial-up to a LINC/8 so as to make weather
reports available online) but those schemes seem "out of band"
to me - they're not in the audio.
Certainly
there would be bandwidth and therefore speed
limitations, but does the FCC allow this?
It's a requirement of the new EBS replacement!
Cynical as I am, the fact that the government is allowed to
do something doesn't tell me it's legal for citizens. :-)
I seem to remember something about tone encoding/decoding
being illegal within citizen's band radio, for example.