TV screen refresh in slow motion

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keithkml
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TV screen refresh in slow motion

Post by keithkml » Sat Jun 06, 2009 6:50 pm

Thought this might be of interest to uzebox coders. Recorded at 10000fps (333x slowdown).

[youtube]http://www.youtube.com/watch?v=lRidfW_l4vs[/youtube]

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Jhysaun
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Re: TV screen refresh in slow motion

Post by Jhysaun » Sat Jun 06, 2009 10:10 pm

Thats really cool.

>J
Lerc wrote:I intend to use my powerful skills of procrastination to ensure that when I get to making things, the chips will be available.

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steve.chamberlin
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Re: TV screen refresh in slow motion

Post by steve.chamberlin » Sat Jun 06, 2009 10:12 pm

That's interesting. Looks like they've somehow modified the monitor to drastically slow the refresh rate, rather than record a normal refresh at 10K FPS and then play it back in slow-motion. At least that's my interpretation, given how the image fades away 3 or 4 lines after each line is drawn.

lightfoot256
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Re: TV screen refresh in slow motion

Post by lightfoot256 » Fri Jun 12, 2009 12:21 pm

Not sure...

I'm not sure how long the phosphor holds onto the "pixels" and whether actual images are only perceived due to delays in the eye rather than the TV set; I couldn't imagine the phosphor holding onto the entire image and then letting go just before the next one is about to appear but this seems too slow.

Also capturing at that speed would reduce the amount of light that is able to be captured so maybe if you brightened the video you can see more of the picture.

Cool effect.

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