I will be putting up some pictures and details of a new tiny encoder which will be comming soon, measuring
just 2"x1.5" it is a small size lower cost encoder.
New board pictures of the production model !!
A while back I was asked by a friend to help in a
project to connect an arcade board to a large screen TV. After some experimentation a
board was designed and built which took the RGB & sync outputs from a normal
JAMMA game ( and non-JAMMA games too ) and encoded it into a video signal to connect the
board to a TV.
I'm now offering this to other 'Arcade Hobbyists' who
might find the idea of connecting games to a TV fun or useful.
What does it do ?
This unit will convert the Red, Green and Blue video
signals coming out of a video game and convert it into the composite NTSC video, or
It allows you to plug a Video arcade game board into a regular TV receiver that accepts
video, or S-Video input, in the NTSC encoding format.
This board ONLY works with standard resolution boardsets ( 15kHz horizontal line frequency
) it is NOT designed for medium resolution games or
for VGA cards.
Who is it for ?
This board is aimed at the arcade
hobbyist and home enthusiast, it is NOT designed for commercial,
automotive, medical or any use outside the home as a tool for other arcade
I also do not recommend this board to anyone who is inexperienced with the
hook up and wiring of arcade games. It's extremely easy to make
mis-connections and destroy the arcade board, the converter, the TV and the
This sounds like
something for me ?
The board is now available please mail me for exact details.
Please Note: The board is only available for shipping in the USA and Canada
Circuit diagrams/Schematics and parts lists are NOT available.
Click to E -Mail Jrok for details
RGB ( Red Green and Blue ) 1V peak-to-peak
signal, 3 adjustments are provided to match input levels from the game board to the
Composite Sync - Negative composite sync.
5V DC - regulated power supply.
it can be powered from the same supply as the game board.
NTSC composite Video
Note: this is video output NOT modulated VHF/UHF, a TV needs to
have a composite video or S-video input connector.
RGB level control, to adjust games which have a very high voltage level on
the RGB ouput, three controls are provided to adjust the levels
2.5 inches square, mounting holes are 2.1 inches spacing, 0.2 inch
from the board edges.
Because this converter 'cleans' up the incoming video signals and synchronization, to
meets the exacting tolerances required for display on a normal NTSC television
receiver, the unit will work with almost every video game that gives out a composite sync
and RGB signals.
This includes games which use very wide screens, also known as overscan.