media what died a'bornin'

From: Fred Cisin <>
Date: Fri Oct 8 13:47:51 2004

On Fri, 8 Oct 2004, Jos Dreesen wrote:
> A scheme, using data buried into the video signal was used in Germany.
> During theTV broadcast you could see the data as white stripes in the
> upper left corner.
> A small circuit was used to filter out the data and feed it into the
> RS232 port.
> I do not remember the exact name of the scheme , German readers can
> probably expand on this.
> Needless to say that only computer related broadcasts used this
> scheme...

In the U.S., the "closed caption" system, which is primarily for
text for hard of hearing folk, puts two bytes of ASCII into line 21
of the VBI (vertical blanking interval). It CAN be used for other
Received on Fri Oct 08 2004 - 13:47:51 BST

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