Bouncing DVD Logo • Hacker News Board

Re: Bouncing DVD Logo

#181

Post by Slartie » Thu, Apr 16, 2020, 6:57 AM UTC

A_No_Name_Mouse wrote: post #171

mgiampapa wrote: post #121

Earlier quoted context omitted.

Those Sony Trinitron's were literally were made of lead. My back still hurts, but the 20" was worth it!

Was that the one with the demagnitize button? I used to slap the monitor while pushing the button so my coworkers would think I hit it so hard the image bounced around

All the better ones had that button, usually named "degauss". My 22" flat CRT (it was flat on the front, like LCDs today, which was a great feature at the time, but made the thing extremely expensive and extremely heavy) had a degauss function that was apparently so powerful it visibly distorted the image on other monitors right next to it when I degaussed mine. I made a joke of doing that in the middle of games on LAN parties ;-) didn't work repeatedly though, after degaussing once I had to wait for some time until degaussing again would actually do something.

Re: Bouncing DVD Logo

#182

Post by globular-toast » Thu, Apr 16, 2020, 7:03 AM UTC

hadlock wrote: post #68

kens wrote: 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…

That you feel the need to inform us of this "historical fact" makes me feel especially old... having lived through the CRT -> LCD transition period when buying an LCD made going to LAN parties a lot easier

I'm not usually an early adopter but I was the first guy at my LAN party to bring an LCD monitor. It was smaller and looked worse than everyone's CRTs and had terrible ghosting, but everyone was fascinated by it and could tell it was the future.

I've still yet to see an LCD that performs as well as those CRTs, though.

Re: Bouncing DVD Logo

#183

Post by Slartie » Thu, Apr 16, 2020, 7:05 AM UTC

isaidthis wrote: post #6

Make the browser window real small and things get crazy.

If you make it just large enough so the logo has a few pixels left and right to bounce, it starts vibrating and changing colors really fast. Looks like it's really angry from being confined :D

Re: Bouncing DVD Logo

#184

Post by epse » Thu, Apr 16, 2020, 7:08 AM UTC

z3t4 wrote: post #179

hadlock wrote: post #68

Earlier quoted context omitted.

That you feel the need to inform us of this "historical fact" makes me feel especially old... having lived through the CRT -> LCD transition period when buying an LCD made going to LAN parties a lot easier

I visited a TV shop about 5 years ago and some of the TV's up on display had the demo image burned in. So it's probably still a problem.

LCD can definitely have burn in

Re: Bouncing DVD Logo

#185

Post by skrebbel » Thu, Apr 16, 2020, 7:16 AM UTC

nikital wrote: 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)

This had me laughing out loud even though I knew it was coming, thanks ^_^

Re: Bouncing DVD Logo

#186

Post by wilgertvelinga » Thu, Apr 16, 2020, 7:20 AM UTC

jkeat wrote: post #138

Even though it's gross, it's kind of cool that you can do this with nested marquees: DVD

Like this: https://ff23.be ?

Re: Bouncing DVD Logo

#187

Post by dredmorbius » Thu, Apr 16, 2020, 7:26 AM UTC

A_No_Name_Mouse wrote: post #171

mgiampapa wrote: post #121

Earlier quoted context omitted.

Those Sony Trinitron's were literally were made of lead. My back still hurts, but the 20" was worth it!

Was that the one with the demagnitize button? I used to slap the monitor while pushing the button so my coworkers would think I hit it so hard the image bounced around

Numerous monitors had degaussing features, Sony's among them.

Re: Bouncing DVD Logo

#188

Post by foobarbecue » Thu, Apr 16, 2020, 7:29 AM UTC

3fe9a03ccd14ca5 wrote: post #131

mgiampapa wrote: post #121

Earlier quoted context omitted.

Those Sony Trinitron's were literally were made of lead. My back still hurts, but the 20" was worth it!

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

Re: Bouncing DVD Logo

#189

Post by fidelramos » Thu, Apr 16, 2020, 7:40 AM UTC

z3t4 wrote: post #179

hadlock wrote: post #68

Earlier quoted context omitted.

That you feel the need to inform us of this "historical fact" makes me feel especially old... having lived through the CRT -> LCD transition period when buying an LCD made going to LAN parties a lot easier

I visited a TV shop about 5 years ago and some of the TV's up on display had the demo image burned in. So it's probably still a problem.

From what I have heard this is a problem with OLED panels.

Re: Bouncing DVD Logo

#190

Post by swyx » Thu, Apr 16, 2020, 7:43 AM UTC

sedatk wrote: post #177

Zetaphor wrote: post #164

Earlier quoted context omitted.

It's amazing how well the effect works. Here's a demo: https://jsbin.com/kuzolurapi/1/edit?html,output

it only moves horizontally on iOS.

desktop chrome too