A
Archimedes' Lever
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On Fri, 18 Dec 2009 10:50:36 -0500, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:
It was called "In band gated sync scrambling".
<mike.terrell@earthlink.net> wrote:
glen herrmannsfeldt wrote:
In comp.dsp Michael A. Terrell <mike.terrell@earthlink.net> wrote:
(snip)
Videocipher-I was digital video & audio. Videocipher-II was analog.
And then there was the system that adds a sine wave to the
video signal such that the sync is not the lowest level anymore,
and wonders around enough that you won't try watch it.
That was 'On TV' or the 'Hamlin' scrambling system on Cable TV. That
was '70s technology.
It was called "In band gated sync scrambling".