Re: TV Charater Overlay - food for thought

["Frank Mc Alinden" <fmcalind@xxxxxxxxxxxxxx>]

Hi Wayne
I have did an xpl tvosd ...using  a pic micro and a simmstick
(atmel  using the video section)..........have a look here......
http://skybax.rapidhoster.co.uk/~armagh/page28.html

HTH
Frank
----- Original Message -----
From: "Wayne" <wayne@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Thursday, March 18, 2004 9:15 AM
Subject: [ukha_d] TV Charater Overlay - food for thought


> Hiyall,
> Came across these the other day (http://www.decadenet.com/) the BOB-3
> units... which have a ttl level (may be wrong) serial port on it -
video
> in - video out.
>
> Basically a character generator on a "simm"
> Now - these ethernet -> serial ports that have been talked about,
how
> much of a challenge is it to get something like that to drive this
> module and therefor up pop messages on your tele...
>
> I'm making a few assumptions here
> 1st off, my freeview box, when I turn it on, makes the tele jump to
the
> correct channel and therefor you are watching whatever channel the box
> was left on.
> 2nd,  I /think/ (Haven't played for a while) that my tele also puts
out
> (on the scart connector) the channel that the tv was on /before/ you
> changed to the scart channel. I dont know if this is correct for all
> tele's but am sure this is the case on my Toshiba.
>
> So... with a bit of 'electronic wizardry' I was thinking along the
lines
> that the video source for these 'bob-3's is the output of  the scart
of
> your tele. These programmable ethernet-> serial adapters accept
your IP
> data and 'as if by magic' you have this network accessible display
thing
> that will overlay your programmed text onto whatever you are watching
on
> the tele.
>
> The coding of the ethernet devices I could probably do - its the
> electronic bits that would be my problem.
>
> Thoughts anyone? Has it been done before and I now have another
wheel??
>
> Wayne.
>
> ( oh - all designs are open source as long as whoever makes one - does
> one for me too at no extra charge :)
>
>
>
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