RE: Security Camera Experiment

["Mick Furlong" <dorsai@xxxxxxx>]

Kenneth

you have two different problems here, first is to distribute the signal,
really the best bet is modulation for a home system, anything else is going
to be expensive and complex.

Second issue is handling multiple cameras, two ways to do this, the
professional way being to use a multiplexing unit and look at X number of
cams at once with the ability to zoom in on one. Second is to use a scan
type facility where the hardware constantly scans through the cameras and
gives you the capability to pick one.

With the second option it is easy enough to distribute the signal using a
modulator.

So basically use a scan and pick unit and then modulate the output to feed
your TV distribution system.

Just my opinion of course but it is cost effective ;)

Mick



>  -----Original Message-----
> From: 	Kenneth Watt [mailto:kennethwatt@xxxxxxx]  On
Behalf Of
> Kenneth Watt
> Sent:	04 May 2001 18:42
> To:	UKHA
> Subject:	[ukha_d] Security Camera Experiment
>
> Guys,
>
> Someone will be able to help me her I'm sure :o)
>
> I have got a cheapo little security camera from Makro just to play
about
> with, it's a Kingavon colour camera with a built in mike, very simple
> stuff really, usual 12V power supply and the cable terminates on a
> standard euro scart, intended to go straight into the back of a video
or
> telly. I am using HV for automation BTW.
>
> Now here are the questions what is the best way of getting the picture
to
> every TV in the house? I could modulate it and feed it through the
coax,
> but what happens if you add more cameras and how would you switch
between
> them? I don't think that's the answer.
>
> I would be grateful for any pointers you can give before I go ahead
> installing the thing and I know some of you will have already been
down
> this path with security cameras.
>
> Ta
>
> K.