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8" Music video LDs: worth anything?

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Anonymous
July 12, 2004 2:49:46 AM

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

I've got a half-dozen 8" music LDs - stuff like Stray Cats, Todd
Rundgren, UB40, etc.
Anyone have any thoughts on their worth before I stick 'em on ebay? Are
they sought after, or just forgotten?

Happy trails,
Larry B.

More about : music video lds worth

Anonymous
July 12, 2004 1:35:14 PM

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

i have several of these, and even more more of the CD-V discs, which give
you one or two A/V laserdisc tracks with great stereo audio, and a few more
audio tracks of CDV music audio the same size as ordinary CD's, but gold in
color, and you can easily see where one format starts and the other leaves
off.. $15 @, or 8 for $100 with shipping on me, insurance also on me---- mix
or match. alot of the discs both format had rot, not applicable to
digital-only sound.

good quality laserdisc means just that in video, and PCM for the audio,
earlier in stereo, and later in dolby surround, then ac-3, then DTS. the
soundstage presented by an ac-3 laserdisc, to say nothing of DTS, lays flat
waste to any DVD equivelant. at the same time, only the finest DVD pressings
can remotely rival the video image quality of the correspondent laserdiscs,
this spoken from both the cinema and mind of one whose collection well
exceeds 3000 titiles, and owns the best of both; my A/V system is also
"money no option," using a runco ljrII as the refrence laserdisc player, and
a theatris convergence C3 video server for compact disc: this machine being
the finest dvd unit ever conceived and developed-- it is capable of 1080p
with no further signal processing once the natural digital video signal
leaves the machine en route to the display. this magnificent DVD player,
which owes its fantastic level of performance to a grand series of
quadrilatterally interpolated metholodogies that all the desired
sub-scripted transcriptases, to be properly presented as a re-interpretation
of the initial datat stream, constitutes nothing short of a miracle.

so much for the sound---- video images laserdiscs produce are the simple
product of a frequency modulated form, with one laser beam striking the
surface of the disc as a pilot, and a second being read as a relatively
differential protocol, generating a precise wave form, as the disc rotates,
and creates a specific electronic signature as to what is happening, on a
continual basis, as the disc continues to rotate, and the data stream it
provides continues.

from here, we enter the differential calculus.

du/dx = a co-effintially delineated variable of any point, {X} as the discus
is rotating. "u is to x " define the nonlinear curve, and/or the vector it
represents, become parts of the equation as the variables change. the time
axis itself consists of two constituents, one constant, and the other
variable.
we now have to delinealte the rotation of this disc in question, and
determine whether or not it has a constant angular velocity or constant
linear velocity relative to any point [X] upon is surface.sorry too tired to
go on read steven hawking-- he kmpws alot more about this stuff that i do
goodnight
"Larry Blumenfeld" <tumbleweed@wcox.com> wrote in message
news:40F2186A.8080801@wcox.com...
> I've got a half-dozen 8" music LDs - stuff like Stray Cats, Todd
> Rundgren, UB40, etc.
> Anyone have any thoughts on their worth before I stick 'em on ebay? Are
> they sought after, or just forgotten?
>
> Happy trails,
> Larry B.
>
Anonymous
July 12, 2004 3:31:56 PM

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

"Larry Blumenfeld" <tumbleweed@wcox.com> wrote in message
news:40F2186A.8080801@wcox.com...
> I've got a half-dozen 8" music LDs - stuff like Stray Cats, Todd
> Rundgren, UB40, etc.
> Anyone have any thoughts on their worth before I stick 'em on ebay? Are
> they sought after, or just forgotten?
>
> Happy trails,
> Larry B.
>

Search the completed auctions on Ebay:
http://pages.ebay.com/search/items/search_adv.html

I see right off that a Japanese UB40 laserdisc solder for $19.99 with a
single bid. A Japanese Stray Cats LD recently sold for $16.50 with 4 bids.
No Rundgren LDs seem to be selling. They might be released on DVD which
reduces (eliminates?) their value.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=...
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=...

Note - I believe you need to have an Ebay account to search the completed
auctions.
Related resources
Anonymous
July 13, 2004 2:28:49 AM

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

Larry Blumenfeld wrote:

> I've got a half-dozen 8" music LDs - stuff like Stray Cats, Todd
> Rundgren, UB40, etc.
> Anyone have any thoughts on their worth before I stick 'em on ebay? Are
> they sought after, or just forgotten?

I sold several earlier this year and the prices
ranged from $12-13 to close to $30, the 80's
hair band pop metal stuff (Ratt, Coney Hatch, etc)
seem most popular.


drc :) 
Anonymous
July 13, 2004 5:23:42 AM

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

>with one laser beam striking the
>surface of the disc as a pilot, and a second being read as a relatively
>differential protocol, generating a precise wave form, as the disc rotates,

Actually, there are two pilot beams adjacent to the signal beam.

There are photosensors for these lasers and they all provide information for
the player's servo control.

The sensors for the pilots are to detect if the beams are reading the edges of
the track. If any one of the pilot beams begins to deviate from this, reading
more or less of the main track on either one of the pilot beams, the servo
control knows to apply a correction, and does so instantly and automatically to
get the main beam back on track.

Four sensors designed to detect the main signal also serve as servo feedback
for the focus. The beam is supposed to be round, striking four photosensor
quadrants equally. If the beam is ovular due to a focus problem, it will
strike two of the photosensor quadrants more than the remainder, which prompts
the servo control to apply a correction to the focus to bring the beam strike
back into equal concentration on all four sensor quadrants.

For CAV, the constant disc rotation speed has a direct correlation to the
refresh rate of the monitor display. For NTSC interlaced video, the refresh is
60 Hz. 1 Hz during the oscillation equals one half of a field, and two fields
equals one frame, so 60 Hz video equals 30 FPS for NTSC. One complete rotation
of a CAV disc equals one frame, so the disc must rotate 30 times a second to
generate a 60 Hz signal that will create 30 frames of video for the one second
duration. Multiply 30 RPS to 60 seconds and you get 1800 RPM. The rotation
remains constant throughout the entire playable time because the vertical
blanking are at fixed points.

CLV/CAA discs are more complex in implementation as the rate of flow of the
information stays constant. In order to do this with LaserVision optical
discs, you must vary rotational velocity by allowing the flow of information at
a fixed rate while still preserving the 60 Hz scan refresh output for proper
scanning on a monitor display. This means that the blanking intervals will not
be in fixed positions.

Remember, that in CAV discs, the signal-noise ratio improves as the disc reads
on. On CLV/CAA, the signal-noise must remain constant. This could be used as
a reference to help regulate rotation for CLV/CAA discs. However, it seems
much more likely IMHO that the servo control monitors the scan rate of the
video signal, ensuring that it is oscillating at 60 Hz and applies corrections
to maintain this rate through variation of the disc spindle rotation
velocities.

In either case, servo control of disc rotation appears to use the refresh rate
of the video signal as a reference. - Reinhart
Anonymous
July 14, 2004 1:52:37 AM

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

Larry Blumenfeld wrote:

> I've got a half-dozen 8" music LDs - stuff like Stray Cats, Todd
> Rundgren, UB40, etc.
> Anyone have any thoughts on their worth before I stick 'em on ebay?
> Are they sought after, or just forgotten?
>
> Happy trails,
> Larry B.
>
Thanks to all who replied...I think I'll put 'em up in a week or so and
see what happens.

Happy trails,
Larry B.
!