video colour inverter - with a host of other interesting facets

video colour inverter elektor october 1984 with a host of other interesting facets video colour inverter Inverting the phase of video signals causes interesting effects on the screen. As proprietary equipment for this purpose is expensive, the low-cost inverter presented here may be of interest to many of you. The unit offers the choice of inverting the composite colour (= luminance + chrominance) signal, or the luminance (black and white information) signal only. 10-32 The inverter is of interest to three groups of people: video recorder owners who want to change the image on their tele- vision screens, video camera operators who want to incorporate trick images in their work, and amateur photographers who want to view their negatives as positives. Depending on the setting of the relevant switch, the circuit provides normal, that is, non-inverted, images (which means that the inverter may be connected perma- nently), or inversion of the luminance and chrominance signals, or inver...