The LCD pixels themselves have a longer switching time (probably on the order of dozens of lines' worth of signal). But Duck Hunt does not rely on horizontal timing as far as I know, only frame-by-frame timing (with the white squares).
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What is Duck Hunt?
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Famous NES game that uses the "NES Zapper" light gun.
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I saw an old Phillips schematic that used a combo of a Phillips ASIC + Cyclone II to do the job. It must all be ASICs from Marvell/Broadcom these days right?
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Yeah, pretty much. Either a single chip for monitors or sometimes a processor/scaler, an analog front-end, and perhaps an HDMI mux for TVs and such. Panasonic & other vendors are also common, and for frontends you get vendors like Analog Devices & others.
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If this information is right, LCD need a big timing improvement from around 70ms to 16ms... https://hackaday.com/2015/11/16/resurrecting-duckhunt/ …
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Maybe will be easier to hack the zapper.. (raspberry zero+camera+OpenCV)
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