Re: Genlock

From: Andre Kaesmacher (
Date: 2001-03-18 22:43:31

Marko Mäkelä schrieb:

> How does plain genlock combine the images?  Does a genlock circuit just
> act as a switch that selects pixels from one video source at a time?  And

I do think so.
The Genlock Device gets feeded with 2 Video-Sources and one Signal which
Video-Source should be selected.

> chroma keying is just one technique that can be used to flip the switch?

As far as i know, with chroma keying, it is possible to mix the Sources, to get

a blending Effect. (Genlock=binary, chroma-keying selects a percentage which
goes stronger into the resulting Video).

There was a Genlock for the C64, produced by a german Company which also
made Pagefox (was it Scanntronic?).

Corrections are welcome!

Andre Kaesmacher

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