--
Philippe Mingasson
phil...@noos.fr
ICQ - 6030703
Alan
"Philippe Mingasson" <phil...@noos.fr> wrote in message
news:1f1qi4u.1qr4t5l1ykj4caN%phil...@noos.fr...
> The G-con manual says that there may be incompatibility problems with any
> screen that does not display the picture in the traditional way.
> The technical reason is that the G-con and software need to know what part
> of the image is being drawn at the precise moment in time the trigger is
> pulled, if the image is being drawn twice the normal speed, goes through a
> frame store or other such processing, an accurate reading cannot be taken.
> Hope this helps
I don't actually understand how the gun works. I thought it needed some
internal calibration so that it knew its own angle and position, like
some Joystivk do, but I wasn't aware it needed any visual feedback - and
what you're saying is it does.
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Paladin
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"Philippe Mingasson" <phil...@noos.fr> wrote in message
news:1f1qi4u.1qr4t5l1ykj4caN%phil...@noos.fr...
"Most home video games and many arcade games use some sort of gun as an
input device. You point the gun at the screen and pull the trigger, and if
you hit the target on the screen, the target explodes.
To create this effect, the gun contains a photodiode (or a phototransitor)
in the barrel. The photodiode is able to sense light coming from the screen.
The gun also contains a trigger switch. The output of the photodiode and the
switch are fed to the computer controlling the game.
At the same time the computer is getting signals from the screen driver
electronics. If you have read How Television Works, you know about the
horizontal retrace and vertical retrace signals used to align the picture on
the screen. The screen driver electronics send pulses to the computer at the
start of the horizontal and vertical retrace signals so that the computer
knows where the electron beam is on the screen during each frame.
The computer normally uses one of two different techniques to figure out
whether or not the gun is pointed at the target when the user pulls the
trigger:
The computer blanks the screen and then paints just the target object on the
screen (as a white object). If the photodiode senses darkness after one
vertical retrace signal and then light after the next, the computer assumes
that the gun is pointed at the target of the screen and scores a hit.
The computer can blank the screen and then paint the entire screen white. It
will take time for the electron beam to trace the entire screen while
painting it white. By comparing the signal coming from the photodiode with
the horizontal and vertical retrace signals, the computer can detect where
the electron beam is on the screen when the photodiode first senses its
light. The computer counts the number of microseconds that pass between the
time the horizontal and vertical retrace signals start and the photodiode
first senses light. The number of microseconds tells the computer exactly
where the gun points on the screen. If the calculated position and the
position of the target match, the computer scores a hit. "
"Philippe Mingasson" <phil...@noos.fr> wrote in message
news:1f1qlqk.w2j0uh1648pj4N%phil...@noos.fr...
"Philippe Mingasson" <phil...@noos.fr> wrote in message
news:1f1qlqk.w2j0uh1648pj4N%phil...@noos.fr...
> I have a friend with a 100Hz widescreen Sony and it's no-go with the Gcon-2.
Can you find out wich 100 hz screen? It is PAL I guess
(sirgr...@yahoo.co.uk).
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Paladin
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"Philippe Mingasson" <phil...@noos.fr> wrote in message
news:1f1qnx8.d5v73m1oye228N%phil...@noos.fr...
You mean, like it says on the packaging of the box????
Also Projectors, LCD's Plasmas, any anything else that is not std 50/60Hz
CRT
> You mean, like it says on the packaging of the box????
Well I live in Paris and TC2 hasn't been released here yet.
phil...@noos.fr (Philippe Mingasson) wrote in message news:<1f1s0jy.h7po18rhvea4N%phil...@noos.fr>...
"UTChE96" <utc...@yahoo.com> wrote in message
news:92577191.01102...@posting.google.com...
> Where can you buy just the gun?
In France? No clue... Probably in any PS2 selling store I guess.
BTW, could it be that a different gun (not the one sold with TC2) might
work any better on a 100 hz screen for playing TC2 ?