Why can't you play Duck Hunt on a projector?

[EyeMWing]

I honestly can't come up with any physics explanation - the only difference between a CRT and a projector/screen combo is that the light is bouncing off the screen, instead of being emitted directly from the "target" - but it looks the same, as far as any light-sensing device should be concerned.

 

[mrchan]

It's not the simple.

It doesn't work with HDTVs either, even CRT HDTVs.

 

[sniperruff]

hence, i don't think you can play duck hunt on an LCD either

 

[NutBucket]

Are you sure? I swear I played duckhunt on our early 80's Sony Projection TV.

 

[EyeMWing]

And why the hell not?

Hell, when I bought Time Crisis 3 for the PS2, it's documentation said it wouldn't work on projection devices, either. What is it about light guns that I'm not "getting"?

 

[Phoenix86]

Originally posted by: NutBucket
Are you sure? I swear I played duckhunt on our early 80's Sony Projection TV.

I know for a fact it worked on a rear projection TV.

 

[MrsPickins]

IIRC, light guns rely on interlacing to work, and most projectors and hdtv's are progressive scan.

Edit: oops, posted on my wive's acct.

 

[Cattlegod]

IIRC the way the gun works is the gun is a mini camera. when you pull the trigger the screen goes black with a white square where the bird is. if the gun picks up a white square then it sees the shot as a hit, otherwise it is a miss.

i think it should work, maybe your projector isn't bright enough, or the screen is too big/ you are too close.

 

[Heisenberg]

The gun is dependent on the scanning rate of the CRT IIRC. Projectors don't scan at the same rate a CRT does.

Edit: Too slow...

 

[EyeMWing]

Originally posted by: mrspickins
IIRC, light guns rely on interlacing to work, and most projectors and hdtv's are progressive scan.

So if I were to try switching interlacing back on........

 

[NutBucket]

Originally posted by: Phoenix86

Originally posted by: NutBucket
Are you sure? I swear I played duckhunt on our early 80's Sony Projection TV.

I know for a fact it worked on a rear projection TV.

Yeah, this was a front projection.

Time Crisis 3/4 kinda works on the front projection Mitsu TV at my gf's place but that TV is on its last legs so it doesn't work very well.

 

[So]

Your wall isn't as reflective in the infared part of the spectrum as a glass TV.

 

[MrPickins]

http://entertainment.howstuffworks.com/question273.htm

This doesn't really answer the OP, but it's still neat info.

 

[dwcal]

Originally posted by: Phoenix86

Originally posted by: NutBucket
Are you sure? I swear I played duckhunt on our early 80's Sony Projection TV.

I know for a fact it worked on a rear projection TV.

That's because old projection TVs used CRTs to project, and if this was before HDTV, the scan rate would match a regular CRT TV.

 

[EyeMWing]

Originally posted by: So
Your wall isn't as reflective in the infared part of the spectrum as a glass TV.

The NES light gun is a visible light reciever, not an IR transmitter.

 

[Strifer]

I was playing Duck Hunt on a 55" rear projection TV last weekend. Not an HD though.

 

[NutBucket]

Originally posted by: dwcal

Originally posted by: Phoenix86

Originally posted by: NutBucket
Are you sure? I swear I played duckhunt on our early 80's Sony Projection TV.

I know for a fact it worked on a rear projection TV.

That's because old projection TVs used CRTs to project, and if this was before HDTV, the scan rate would match a regular CRT TV.

Yep. That was a GREAT tv. Its death saddens me greatly

 

[mercanucaribe]

It knows where you are pointing it based on when during each frame the electron gun lights up the phosphors it's pointing at.

 

[Injury]

Originally posted by: Cattlegod
IIRC the way the gun works is the gun is a mini camera. when you pull the trigger the screen goes black with a white square where the bird is. if the gun picks up a white square then it sees the shot as a hit, otherwise it is a miss.

i think it should work, maybe your projector isn't bright enough, or the screen is too big/ you are too close.

The television casts a bright white light. There is a photosensor at the back of the light gun. If the light is cast down the barrel then the photo sensor reacts by reporting a hit.

It's really not the same as a camera, and the TV is doing all the work of trying to get the gun to react.

 

[Minerva]

The dog still will laugh hysterically at you and you cannot shoot him!

If you had a higher reflective screen (LOTS of gain but UGLY for movies) it may work. Some biz PJ's that have a graphics mode make the whites really bright as into gamut clipping 200% and MAY work.

Did I tell you that sucky hound dog is going to laugh at you?

At least he cannot hump your leg! :disgust: -M

 

[EyeMWing]

Originally posted by: Minerva
The dog still will laugh hysterically at you and you cannot shoot him!

If you had a higher reflective screen (LOTS of gain but UGLY for movies) it may work. Some biz PJ's that have a graphics mode make the whites really bright as into gamut clipping 200% and MAY work.

Did I tell you that sucky hound dog is going to laugh at you?

At least he cannot hump your leg! :disgust: -M

The dog never laughs at me, because I never miss. I'm a Duckhunt ninja.

 

[mercanucaribe]

Actually I think Duck Hunt does make the duck white, and if the gun is pointing at the white area, it registers as a hit.

 

[mugs]

Originally posted by: EyeMWing

Originally posted by: Minerva
The dog still will laugh hysterically at you and you cannot shoot him!

If you had a higher reflective screen (LOTS of gain but UGLY for movies) it may work. Some biz PJ's that have a graphics mode make the whites really bright as into gamut clipping 200% and MAY work.

Did I tell you that sucky hound dog is going to laugh at you?

At least he cannot hump your leg! :disgust: -M

The dog never laughs at me, because I never miss. I'm a Duckhunt ninja.

Well how the hell would you miss with a big-ass projection TV?

 

[exdeath]

Some light guns time the painting of the screen for one frame, one pixel at a time using the h-blank to paint the screen and note the first time the gun picks up on the change to get the x,y cordinate of aim.

On a persistant full frame digital display device the concept of h-blank and v-blank are a little different from a device which uses scan lines.