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Time Crisis 2 and 100 hz not working?

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Philippe Mingasson

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Oct 23, 2001, 8:13:55 AM10/23/01
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Hi all!
I read recently Time Crisis 2 with the Gun wouldn't work with 100hz TVs
(I own a Sony KV32FX60B set).
Any truth in that? How come if that's the case?

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Philippe Mingasson
phil...@noos.fr
ICQ - 6030703

alan

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Oct 23, 2001, 9:16:12 AM10/23/01
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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

Alan

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Philippe Mingasson

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Oct 23, 2001, 9:35:57 AM10/23/01
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alan <lakey...@ntlworld.com> wrote:

> 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.

Paladin

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Oct 23, 2001, 9:52:22 AM10/23/01
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I have a friend with a 100Hz widescreen Sony and it's no-go with the Gcon-2.

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Paladin

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alan

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Oct 23, 2001, 9:49:59 AM10/23/01
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Yes, the G-con has a lens in its barrel for picking up parts of the image,
also it has a lead that is plugged in line with your video output of the
console to make it more accurate than most other light guns.
Here is some this I just found on a web page, it goes in to a bit more
depth, but you will seen that if the gun is not seeing what the playstation
thinks it should see you will miss the target, and the processes involved in
some 100Hz TVs don't help.
Try it with yours and see, if it doesn't take it back, make sure the shop
allows you to do this. Or you can play with the joypad.


"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. "

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alan

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Oct 23, 2001, 9:55:20 AM10/23/01
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Remember the manual says that there MAY be incompatibility. You won't know
until you try.

"Philippe Mingasson" <phil...@noos.fr> wrote in message

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Philippe Mingasson

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Oct 23, 2001, 10:18:37 AM10/23/01
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Paladin <sirgr...@yahoo.co.uk> wrote:

> 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).

Paladin

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Oct 23, 2001, 5:30:29 PM10/23/01
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Yes, it's PAL, but I don't know any more than that at the moment.

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Mark Gillespie

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Oct 23, 2001, 5:45:00 PM10/23/01
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"Philippe Mingasson" <phil...@noos.fr> wrote in message
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> Hi all!
> I read recently Time Crisis 2 with the Gun wouldn't work with 100hz TVs

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


Philippe Mingasson

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Oct 24, 2001, 3:49:08 AM10/24/01
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Mark Gillespie <mark.gi...@SPAMTRAPemail.com> wrote:


> You mean, like it says on the packaging of the box????


Well I live in Paris and TC2 hasn't been released here yet.

UTChE96

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Oct 24, 2001, 11:50:03 AM10/24/01
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Where can you buy just the gun?


phil...@noos.fr (Philippe Mingasson) wrote in message news:<1f1s0jy.h7po18rhvea4N%phil...@noos.fr>...

alan

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Oct 24, 2001, 10:30:22 PM10/24/01
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I bought Time Crisis and an extra gun from my usual game store in the UK,
another one round the corner had them too.
For the UK try GAME and Electronic Boutique


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Philippe Mingasson

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Oct 25, 2001, 3:15:47 AM10/25/01
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UTChE96 <utc...@yahoo.com> wrote:

> 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 ?

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