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Bouncing DVD Logo

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191–200 of 293 posts

Re: Bouncing DVD Logo

#191
post #89

Earlier quoted context omitted.

DVD was also popular around the time that Plasmas were being introduced, which also had burn in issues.

Aren’t DVDs popular anymore?

No, they’re low resolution and bulky. Do many people even own an old DVD player anymore?

Re: Bouncing DVD Logo

#192

Earlier quoted context omitted.

And 120hz refresh rates... almost 20 years ago!

Yeah, and I had 3d shutter glasses that worked great with the trinitron... In 2000 or so. Nvidia 3d Vision came along later but now sadly those product lines are abandoned, I guess due to VR which is just not what I want at all

Wow, such memories with the 3D Vision. Was quite visionary. And indeed I had to buy a Sony Trinitron with 120Hz refresh otherwise it wouldn't work.

I remember playing MoH:AA, the play experience was quite out of this world.

Re: Bouncing DVD Logo

#193
post #129

What I want to know is, who implemented the original animation (on silicon, I presume?), and did they foresee that it would have such a cult following today?

> on silicon, I presume?

I'm pretty sure the screensaver was done in software. All DVD players have some sort of an embedded computer inside (even the earliest ones had to handle things like on-disc menus). It wouldn't make much sense to implement all that non-time-sensitive logic in an ASIC.

Re: Bouncing DVD Logo

#195
post #9

A while ago I made a bouncing DVD logo that would actually hit the corner every few bounces with high probability: https://nikital.github.io/screensaver (But then it would troll you just before hitting it)

Earlier I commented about turning it into a mac screensaver. Well, I went ahead and did it. Used your code, but didnt have a license. Do I have your permission? Here is the link to the repo: https://github.com/pabloriveracelerity/mac-dvd-screensaver Please let me know if you do not approve and I will take it down ASAP. No ill intentions. Just wanted to join the fun. :)

Sure, thanks for doing it! I added a license to the original code.

Re: Bouncing DVD Logo

#196
post #165

Earlier quoted context omitted.

I never noticed a benefit over 70 or so. The flicker of 60 made my eyes bleed though. Then with LCDs 60 was fine.

I still don't know what it is about 60 Hz that made me see the flicker plainly as a strobing light. TVs at 50 Hz—nothing (other than being generally bleh back then). Had to use 800x600 instead of 1024x768 just to have 85 Hz instead. On LCDs, I still can see faint flicker on some static backgrounds, and I think 60 Hz might play a role here too—though it seems to also depend on the brightness and Flux being on or off.…

Three reasons: You sit much closer to a computer screen compared to a TV, so your peripheral vision has a better chance with the computer screen to see flicker. Computer CRTs supported higher refresh rates, so they used phosphors with shorter afterglow (otherwise you'd get ghosting/S&H-like artifacts like TFTs produce). You can notice this one when you photograph a computer CRT vs. photographing a TV with the same shutter speed. And at the end of CRT TVs a lot of them were 100 Hz.

Re: Bouncing DVD Logo

#197
post #60

As a historical note, the bouncing logo wasn't just for fun, but was important to prevent screen burn-in on CRTs. If you had a static image on a CRT for a long time, it could damage the phosphor. Sometimes you could even see the image when the screen was off! This was the original purpose of screensavers, which saved your screen from damage. Displaying a dynamic image prevented one part of the screen from being overu…

True for any flat screen panel as well. The plasmas are really prone to ”ghosting” - just a matter of minutes. And there are ”washing” programs to ”reset” the panel.

I guess plasma is the main reason why on-screen channel logos went from solid to translucent?

Re: Bouncing DVD Logo

#198
post #60

As a historical note, the bouncing logo wasn't just for fun, but was important to prevent screen burn-in on CRTs. If you had a static image on a CRT for a long time, it could damage the phosphor. Sometimes you could even see the image when the screen was off! This was the original purpose of screensavers, which saved your screen from damage. Displaying a dynamic image prevented one part of the screen from being overu…

Ironically, the increased popularity of OLED displays in television, computer and smartphone screens has brought this problem back. If this trend continues, perhaps those 3D maze, tubes, fish, will come back to everyone's computers soon.

Re: Bouncing DVD Logo

#199
post #60

As a historical note, the bouncing logo wasn't just for fun, but was important to prevent screen burn-in on CRTs. If you had a static image on a CRT for a long time, it could damage the phosphor. Sometimes you could even see the image when the screen was off! This was the original purpose of screensavers, which saved your screen from damage. Displaying a dynamic image prevented one part of the screen from being overu…

And is now important again with the advent of OLED. Those things can burn in so bad.

Re: Bouncing DVD Logo

#200
post #60

As a historical note, the bouncing logo wasn't just for fun, but was important to prevent screen burn-in on CRTs. If you had a static image on a CRT for a long time, it could damage the phosphor. Sometimes you could even see the image when the screen was off! This was the original purpose of screensavers, which saved your screen from damage. Displaying a dynamic image prevented one part of the screen from being overu…

Ironically, the increased popularity of OLED displays in television, computer and smartphone screens has brought this problem back. If this trend continues, perhaps those 3D maze, tubes, fish, will come back to everyone's computers soon.

Let's hope we just stick to black screens to save some power and prevent burn-in at the same time.
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