Trivial Laserdisc Questions

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

I find it strange that after all these years of collecting laserdiscs I have
come up with two questions that I cannot figure out:

How many "spokes" are there on a CAV laserdisc?

The current laserdisc certification symbol (the leaning "L" with a rhombus)
is most likely from the time when the format as were known as
"LaserVision". What did the "DiscoVision" certification symbol look like?
Were there any other certification symbols used the the history of the
laserdisc?

 

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

Suddenly, Local Hooligan sprang forth and uttered these pithy words:
> I find it strange that after all these years of collecting laserdiscs I have
> come up with two questions that I cannot figure out:
>
> How many "spokes" are there on a CAV laserdisc?

What do you mean by "spokes"??

--
aaronl at consultant dot com
For every expert, there is an equal and
opposite expert. - Arthur C. Clarke

 

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

when you look at a CAV disc, there are distinct radial lines that go from
the inner hub to the outside edge. How many of those lines are there?

 

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

On Tue, 24 May 2005 03:53:48 GMT, "Local Hooligan"
<kaicaesius@onemain.com> wrote:

>How many "spokes" are there on a CAV laserdisc?
Most of the "spokes" each contain one line of video data, so at least
525 for NTSC discs (and presumably 625 for PAL)... there may be more
used for extra information like frame and chapter data, but one of the
resident gurus will have to chime in on that one.

>"LaserVision". What did the "DiscoVision" certification symbol look like?
See:
<http/www.blamld.com/DiscoVision/index.htm>
and
<http/www.discovision.com/home.htm>



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[Guest]

Archived from groups: alt.video.laserdisc (More info?)

LaserDisc has 2 "spokes" in CAV

VHD has 4 "spokes" and CED has 8 "spokes".

The "L" started as "LaserVision" in 1981 and was the "official" name
of the format through the 80s. In the late 80s, the format was
"officially" changed to "LaserDisc".



On Tue, 24 May 2005 03:53:48 GMT, "Local Hooligan"
<kaicaesius@onemain.com> wrote:

>I find it strange that after all these years of collecting laserdiscs I have
>come up with two questions that I cannot figure out:
>
>How many "spokes" are there on a CAV laserdisc?
>
>The current laserdisc certification symbol (the leaning "L" with a rhombus)
>is most likely from the time when the format as were known as
>"LaserVision". What did the "DiscoVision" certification symbol look like?
>Were there any other certification symbols used the the history of the
>laserdisc?
>

Blaine
blam1@oz.net
http/www.blamld.com