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Duck hunt, what technology

Discussion in 'Channel Zero' started by Wireless, Oct 21, 2002.

  1. Wireless

    Wireless Guest

    In duckhunt on super nintendo, how do you shoot at the screen, its not like your shooting at the nintendo.....Its amazing
  2. duh-rye-won

    duh-rye-won Guest


    you're right. i never thought about that. it is weird.
  3. angry_xbox

    angry_xbox Guest

    a conspiracy with nintendo and all major manufacturers of television sets that allowed them to place sensors inside the screen of the tv between the vaccuum t00b unbeknowst to all other game systems at the time, like atari. thats why duh
  4. angry xbox

    angry xbox Guest

    fuck off asshole, ima fucking kill you when i find out who you are
  5. Ser3adc

    Ser3adc Guest

    i wish there was a code where you could blow up the fuckin dog...every time the fuckin bird escapes and that dog laughs at me...I WANNA FUCKIN KILL THAT FUCKIN DOG!:mad:
    i still awake in the middle of the night with cold sweats and visions of that dog laughing at me...why does he keep laughing? MAKE IT STOP MOMMY!!!!
  6. vinyl junkie

    vinyl junkie Elite Member

    Joined: Jan 17, 2002 Messages: 4,725 Likes Received: 0
    How does a video-game light gun work? How does the game know where the gun is aiming?


    Lots of home video games and 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 phototransistor) 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 know how a TV 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 the computer knows where on the screen the electron beam is located 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 white. 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 and scores a hit.

    * The computer blanks the screen and then paints the entire screen white. It takes 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 time the photodiode first senses light. The number of microseconds tells the computer exactly where on the screen the gun is pointing. If the calculated position and the position of the target match, the computer scores a hit."


    i always wanted to shoot that damn laughing dog too...
  7. Ser3adc

    Ser3adc Guest

    ^^^thank you so much...i've wanted to know that since my 5th birthday when the neighborhood all got money together and baugh me that shit...finally i can sleep well. thanks.:D
  8. effyoo

    effyoo Elite Member

    Joined: Sep 2, 2002 Messages: 4,703 Likes Received: 0
    thats why the screen flashes when you shoot....

    i'm so smart :rolleyes:
  9. vinyl junkie

    vinyl junkie Elite Member

    Joined: Jan 17, 2002 Messages: 4,725 Likes Received: 0
    you learn really interesting stuff when yer putting off school work... :D
  10. When

    When 12oz Loyalist

    Joined: May 4, 2000 Messages: 10,294 Likes Received: 3
    mr. vinyl junkie with the knowledge

    8bit fo life foo!
  11. Wireless

    Wireless Guest

  12. ~KRYLON2~

    ~KRYLON2~ 12oz Loyalist

    Joined: Oct 13, 2001 Messages: 10,473 Likes Received: 201
    yah that dog does get fucking annoying...FUCK DOGS
  13. socrates

    socrates Guest

    That's why I shoot hunting dogs whenever I see them...whenever
  14. Wi$H

    Wi$H Junior Member

    Joined: Jul 14, 2002 Messages: 108 Likes Received: 0
    okay how the FUCK did u know how it worked? thats just amazing i seriously always wondered that since i got my regular nintendo back in like 88 when i was 7. and i could never find out anywhere.
  15. When

    When 12oz Loyalist

    Joined: May 4, 2000 Messages: 10,294 Likes Received: 3
    mr. junkie is a wealth of knowledge
    oh and he has the internet