composite/svideo to VGA
I have a DVR that only outputs to svideo and composite and some monitors that can only accept VGA and DVI. I'm already using DVI for my computer (and DVI is hard to DIY for anyways) so I need to convert the svideo or composite to VGA. Since LCD monitors have framebuffers, could they accept interlaced VGA? The video output chip in the DVR supports RGB output so it should be pretty straightforward. However, that would be interlaced. If not, is there an easy to build circuit to deinterlace to 640x480 VGA?

I just googled "s-video to VGA" and got this: http://www.svideo.com/video2vga.html http://www.amazon.com/tag/svideo%20to%20vga The problem is that you need some sort of A/D converter, filters to separate the components (a simple subtraction, and a processor to take the interlaced line data, stuff it in a frame buffer, and then output the result in progressive scan VGA. Note, that last step could probably be done in a high-speed CPLD or FPGA with the right hardware. Now, you CAN convert S-video to interlaced RGB fairly easily without major hassles, so long as the monitor/projector can handle it. I believe you just need a transistor circuit to regenerate the sync pulses, but most computer monitors are expecting progressive scan and won't work with this at all.