Hi again...

Finaly i did get mine lasedisc discs.
2 of them and both NTCS format.

The picture shows the difference in size between my disc and a standard DVD.

These laserdiscs has 2 sides and it is actually 2 discs but they have been glued 2 discs (like pankake)

It is a analog format even if it is laserbased. You can see same kind of tracks on the disk that standard LP records have.
So it isn't Binary numbers, it is plain Analog vibration based data which a laser then reads and converts to Picture and sound.

Want to know more?
Http://www.wikipedia.org is the answer and search for "Laserdisc"