> Laser discs are not digital... It is digitized in the time domain
replyLaser disks are 100% digital (as you said, they store digits in the time domain).
They don't encode their data using binary like a CD does.
"Binary" and "digital" are two separate and unrelated concepts.
Um... I think they store "PCM encoded-ish" but the length of the pits are not discrete on / off like on a CD but various arbitrary lengths, so analog.
replyThe sound was also analog to begin with, then the same encoding as CDs, then after that AC-3 and DTS.
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.
replyBUT... 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.
replyAnd 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.
Was CD video compressed? I thought it existed at the same time as DVD but cheaper.
replyThat's Video CD. It existed before DVD but survived alongside it (mainly in Asia) as a cheaper alternative.
replyI just learned this in my 40s and am surprised. Very cool.
replySo how does writes work? Does an analog signal translate into pit-lengths with absolute precision?
replyEverything is analog when it gets to real world
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