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Video Inverter

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Sapy

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Can anyone please help with a Video circuit ? Is there a simple circuit that will invert a 1vpp 75 Ohm video output from a B&W video camera into a negative video out picture . i.e the picture becomes inverted, Black becomes white and visaversa !
 
It's not simple since the sync can't be inverted, so you have to strip off the sync signal, invert the video, and then reinsert the sync.
 
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