41–50 of 99 posts
Fun fact about laser discs. They are analogue not digital. CD’s store digital information with the presence or absence of pits. Fairly ancient but still fundamentally feels like a very old version of a thumb drive. Laser discs are not digital. They encode the analogue video signal’s value as the length of the pit. It is digitized in the time domain - sampled at some frequency, but the “vertical” signal value is store…
Earlier quoted context omitted.
No, with digital, you need encoding. How can you even compare binary with embedded images.
> How can you even compare binary with embedded images. How are the images encoded?
I'm not that familiar with CED but the fact that we can see the images with microscopes is because these are analog discs? And that was because computing power back then was non-existent so they didn't use any kind of compression?
This is a distinction without meaning: all digital anything is analogue if you look closely enough > And that was because computing power back then was non-existent so they didn't use any kind of compression? Compression is not a medium-level detail. You can easily store compressed data on a laserdisc.
I'm not that familiar with CED but the fact that we can see the images with microscopes is because these are analog discs? And that was because computing power back then was non-existent so they didn't use any kind of compression?
I'm not that familiar with CED but the fact that we can see the images with microscopes is because these are analog discs? And that was because computing power back then was non-existent so they didn't use any kind of compression?
One other important aspect is that by changing the angle of lighting, he could basically filter out data at a relevant wavelength.
--
At least that's what I got from the video.
Is there a version that doesn't require watching a video please? This would be 10x faster and easier as a text blob
I'm not that familiar with CED but the fact that we can see the images with microscopes is because these are analog discs? And that was because computing power back then was non-existent so they didn't use any kind of compression?
Uncompressed digital encoding might still result in recognizable structures, but probably not as nicely as here.
Earlier quoted context omitted.
yeah i remember learning this as a kid and being surprised. i originally thought laserdiscs were modern high tech, but then they turned out to actually be from the late 70s/early 80s with the primitive analog video encoding where red book audio cds of the mid to late 80s were actually digital.
BUT... Pioneer put AC-3 (Dolby Digital) surround on LaserDiscs before DVDs came out. So LaserDiscs were the first video medium to offer digital sound at home. And at that point, most players sold were combo players that could also play CDs. And there was one more disc format: CD Video. It was a CD-sized digital single that also had a LaserDisc section for the (analog) music video. I have a couple; one is Bon Jovi.
Is there a version that doesn't require watching a video please? This would be 10x faster and easier as a text blob