extracting H/V sync from sync-on-green video signal?

From: Dan Williams <williams.dan_at_gmail.com>
Date: Mon Jan 31 18:19:26 2005

On Sun, 30 Jan 2005 14:38:59 +0000, Jules Richardson
<julesrichardsonuk_at_yahoo.co.uk> wrote:
>
> does anyone happen to have a schematic for a simple circuit to extract
> sync information from a sync-on-green video signal?
>
> I've got a screen here I'd like to hook up to the Tek (I left the normal
> monitor I use with the Tek at Bletchley), but it needs either seperate H
> and V sync lines hooked up, or composite sync - it won't do sync on
> green (which is all that the Tek provides).
>
> I keep on finding sync combining circuits that'll do seperate sync to
> sync on green everywhere, but nothing to do the reverse!
>
> cheers
>
> Jules
>
>
I don't know if this is any help, but I bought a vga adaptor which has
both a male and female vga connector and converts sync-on-green both
ways. I will try and find the name of the company I bought ift from,
it was only about $45 including postage from the US.
It has worked for me using any combination of pc, sun. dec and sgi
monitors and machines. I have thrown at it.

Dan
Received on Mon Jan 31 2005 - 18:19:26 GMT