Laserdisc?

[yysie]

I'm gonna give a talk about video formats so i need to know what laserdisc, vhs & Svhs exactly is...Does anyone have links or info about them? especially vhs&svhs resolutions....

[monoxide77]

(quoted from http://divxstation.com/article.asp?aId=71 )
The Laser Disc resolution story

The Officially Laserdisc resolution is 528 X 576/480, but many titles in US, after 1990, are using the 544 X 480 resolution.
That happened because the first "cheap" video projectors in US, were using the VGA standard for video in. Of course, those machines were for professional use with PCs. But with the use of special (and cheap) connectors/adaptors or the "famous" VGA - out connection of specific Laserdiscs, it was possible for the very first time, for US video enthusiast, to have big picture at there houses. It was the only true solution for the first home theatres (the term "home cinema" came later...).
Unfortunately, VGA is not based on CCIR-601, so a picture adaption is needed (VGA is 640 X 480). In other words, the picture aspect was wrong and always a part or some parts of the picture was not in use. Because of Laser Disc limitations, the use of pan and scan method (like DVD - Video) wasn''t possible. The only solution without compatibility problems and no cost, was to "upgrade" the laserdisc resolution, unofficially, to 544 X 480. And so it happen.
In Europe, the success of Laserdisc was minimal, so the few released PAL titles, continue to use the official resolution for PAL (528 X 576). In theory, there is a 544 X 576, but I never saw a Pal laserdisc using this resolution.

Also try this link, it's very informative: http://www.cs.tut.fi/~leopold/Ld/ResolutionComparison/

[flaninacupboard]

anything you could possibly want to know about LD is covered here
http://www.access-one.com/rjn/laser/laserdisc.html

im just trying to dig up a page which had resolution comparisons.....

[flaninacupboard]

here we go

http://www.cs.tut.fi/~leopold/Ld/ResolutionComparison/

Edit:
Darn, he beat me! and i'm the LD-King!!

[monoxide77]

here we go

http://www.cs.tut.fi/~leopold/Ld/ResolutionComparison/

Edit:
Darn, he beat me! and i'm the LD-King!!

LOL. You know what they say about great minds...

[Martok]

In the begining was DiscoVision...
You might find this interesting.
http://www.oz.net/blam/DiscoVision/index.htm

[monoxide77]

In the begining was DiscoVision...
You might find this interesting.
http://www.oz.net/blam/DiscoVision/index.htm

also check out info on CEDs or Selectavision: http://www.cedmagic.com/selectavision.html

[lordsmurf]

There's some info at www.lordsmurf.com in the UNDERSTANDING YOUR SOURCE guide.