Digitizing VGA? (take 2)

urgent asks: "In March of 2002, Ask Slashdot ran this article, wherein advice on 'hardware to digitize the VGA output of a PC' was sought. Most of the responses seemed to assume that remote administration of PC's/servers was the end goal. If you've got control of the software and/or hardware, it's pretty clear there are easier solutions for that. On the other had, there are many legacy and embedded systems where it would be nice to monitor and record display output. For instance, integrating old computerized factory equipment into a SCADA system, or recording old embedded maritime and medical displays (hint: jobs). My dream hardware would be a dongle that connected to a VGA out and could be polled over ethernet or CAN."

Comments

You mean...

[Tom7]

By "legacy and embedded systems" you mean, broadcast-flag enabled HDTV devices?

LCD?

[vrt3]

Just attach an LCD display and put it on a flatbed scanner...

But seriously, don't LCD's have a built-in ADC? Some time ago I read somewhere that LCD's with analog connectors ought to be more expensive than LCD's with digital connectors (instead of vice-versa) because they need an ADC. OTOH I think the site where I read that was slashdot; I'm not responsbile for any inaccuracies in this post.