Before DVD, we had these big discs with digital films to watch films on TV in a better quality then VHS. I need to know the exact size of these discs for a project I am doing and they have became obsolete, for I can seam to find any information about this long gone digital video format. Can you help me find the size (diameter) for these Video Discs (their kind of Vinyl disc size, only digital, like a CD only bigger? Thank you!
2006-10-20 07:53:11 · 5 answers · asked by João S 1 in Consumer Electronics ➔ Other - Electronics
the laser video disk was sometimes one movie on one laser disk
other times one movie on two disks, with a difference of only a few minutes
so why? well the compressed data was recorded at different resolutions and bit rates and compression types and on and on
so a movie is 90-120min ~ 3.525Gbytes-4.7G by todays standards
I would conclude that if you had a blank laser disk and 5Gigs of data and a means on which to burn it, it would easily accept it.
I say this b/c look at LP vs CD the analog signal on an LP has much greater info than CD [which using sampling or guessing what the data might be based on other info]
size does matter, todays compression will put many 1's & 0's
2006-10-20 08:24:16 · answer #1 · answered by tutorisland 2 · 0⤊ 0⤋
They were called Laserdiscs, designed by Philips. Each disc was 12 inches in diameter and double sided. Recording was analogue composite video and FM sound, though a later version, called CDV, was produced with digital sound.
2006-10-21 12:30:33 · answer #2 · answered by Loz T 4 · 0⤊ 0⤋
I can't remember the exact size but they are very close to the LP records ~12in.
2006-10-20 15:11:09 · answer #3 · answered by hrwwtp 4 · 1⤊ 0⤋
all i can tell you is that they were called laser disc's. maybe do search on that.
2006-10-20 15:01:43 · answer #4 · answered by Anonymous · 0⤊ 0⤋
laser disc.
2006-10-20 15:00:26 · answer #5 · answered by Polly 3 · 0⤊ 0⤋