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Berkeley Systems “After Dark” screensavers recreated in CSS

bryanbraun.com

121–130 of 153 posts

Re: Berkeley Systems “After Dark” screensavers recreated in CSS

#122

My favorites were the "Totally Twisted" screen savers from Berkeley Systems - particularly the "Voyer" screen saver where you saw the silhouettes of all the people in their apartments doing crazy things at night. https://shorturl.at/fDGTW

I liked the daredevil, trying to jump schoolbuses and stuff with his motorbike. Once in a blue moon, he'd be driving a schoolbus trying to jump other stuff.

What's funny is that these screensavers were _expensive_, and thus people pirated them. I remember the most active warez BBS in area had a whole file section dedicated to screensavers.

Re: Berkeley Systems “After Dark” screensavers recreated in CSS

#125

Earlier quoted context omitted.

>The least charge you can give it is a black signal The point is that you could not give it no signal without it being off. LEDs can do this. The closest to black from a CRT I saw was from Sony's Professional Studio reference monitors that were $32K for a 32" screen. When Sony brought out their OLED reference monitors, they did a side-by-side comparisson of their best CRT, an LCD and the new OLED. All 3 were receivin…

I think you've got the wrong end of the discussion, there. If you can't or don't want to turn you CRT off... then what's the next best thing for avoiding burn-in? Send it a black signal, or send it a bright signal? It's the black signal, because it charges the screen less. Charging the screen is what causes burn in. If you charge it less you get less burn in. > Arguing that CRTs could display true black Nobody argued…

Or just send it a random signal, such as static or even better, an aesthetic screensaver. Showing black on a CRT didn't save any power, and the computer stayed on anyways (since it often took 3-5 minutes to boot up in those days). Black could mean something is wrong or signal is disconnected.

Re: Berkeley Systems “After Dark” screensavers recreated in CSS

#126
post #43

Earlier quoted context omitted.

> screensavers used to be a neccessity as old CRT tubes would 'burn in' an image if they held it static for too long Why didn't we just show a black image?

Could be a UI thing. When the screen is black you expect the monitor to be off and press the on-off switch. Same thing with switching monitors off after work. Though same screensavers would run for a while and then switch the monitor to power saving mode, effectively turning it off.

CRTs were in use for decades.

In the early 1990s, there was no power saving. You could turn off the monitor with the front power switch, or use the screensaver.

A few years later, power saving options began to be introduced. The computer could signal to the monitor that it should go into a low(er) power state. Turning on again took at least 5 seconds for a visible picture, sometimes 15-20. That might not be appropriate if the computer had to be used in response to something like a phone call, or visitor at reception.

Re: Berkeley Systems “After Dark” screensavers recreated in CSS

#127
Everytime I passed this appliances store which had this small computer exhibited, I had to stop and stare thought the window for minutes to watch the flying toasters thingie. I was mesmerized. My 486 was nice, but that was sooo cool.. so high res and smooth..

Re: Berkeley Systems “After Dark” screensavers recreated in CSS

#128
post #92

Earlier quoted context omitted.

Can’t recall any burn-in with recent LED displays. AFAIK it is an issue with OLED ones still.

Sure is. My Galaxy S7 has the keyboard and some of the WhatsApp top bar interface (from texting my wife so much) burned in.

Weren’t these OLED, though?

Re: Berkeley Systems “After Dark” screensavers recreated in CSS

#130

Earlier quoted context omitted.

The electron guns in CRTs also take about 30 minutes to warm up. Before then the black level is pretty high and the image is washed out. So there is benefit to running a screensaver on a CRT but OLEDs do best when just put to sleep quickly.

Uhhh, no. I've never seen a CRT take more than 10-15 seconds to "warm up", and I've been looking at CRTs since the early 70's.

When was the last time you looked at one? Was it todsy? I own half a dozen PVMs and two PC monitors and have been looking at CRTs consistently since the 90s.
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