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From: georgep@vice.TEK.COM (George Pell)
Newsgroups: sci.electronics,rec.video
Subject: Re: Sync Generators
Message-ID: <1826@vice.TEK.COM>
Date: Tue, 18-Aug-87 14:00:54 EDT
Article-I.D.: vice.1826
Posted: Tue Aug 18 14:00:54 1987
Date-Received: Fri, 21-Aug-87 06:45:01 EDT
References: <225@mv03.ecf.toronto.edu>
Organization: Tektronix Inc., Beaverton, Or.
Lines: 18
Keywords: genlocking, colour black video generator
Xref: mnetor sci.electronics:1178 rec.video:1746

In article <225@mv03.ecf.toronto.edu>, drascic@ecf.toronto.edu (SpIKe) writes:
> I have an application where two CCD video cameras have to be genlocked.
> ..............
> Question: do cheap video sync generators exist?  Can we build one ourselves?

You might use a MM5321 TV camera sync generator from National 
Semiconductor.  It is a P-channel MOS LSI device which uses
either a 1.26 Mhz or a 2.04545 Mhz clock which can be derived
from dividing down a 14.31818 Mhz clock by 7.

The device outputs color burst gate, horizontal drive, color burst sync, 
composite sync, composite blanking, vertical drive, and a field index
pulse which can be used to gen lock another 5321.

I have breadboarded this device, and it is easy to use and costs
about $20.00 .

geo