I need a circuit for an RGsB output.for a mitsubishi TV monitor. I can get an RGB Input with separate composite video from my DVD recorder scart but I need to strip the vertical and horizontal sync from the composite video as the scart composite input on the scart is the only source of sync. I then need to put the combined sync back on the green signal. A circuit or a known piece of test equipment to do this would be very much appreciated.