> 1. What is the formal name for the CD-sized laserdiscs that have
> awful resolution [been on the market about two years]?
CD-V single
If the answer is an acronym, what are the words the acronym stands for?
Compact Disc-Video single
> Can anyone add to this list of failed media technologies?
> 8-track
> Elcaset
> stylus-in-groove videodisc
> Qube TV
> the nonrewindable, rentable videocassette
> Beta
CED (Capacitance Electronic Disc) RCA
VHD/AHD (Video High Density/Audio High Density)
LVR (Longitudonal Video Recording) Toshiba/BASF
Video 2000/VCC (Video Compact Cassette) Philips
SVR (Super Video Recording) Grundig
Colin Hunter
Virology Laboratories,
University of Maryland at Baltimore
-----FORWARDER'S COMMENTS:
I might add that the hardcover _Fast Forward_ discusses many
of the above products. Why's it relevant? It's useful when
weighing claims about next-generation laserdisc and display
(HDTV) devices.
Anyone have any info on the shopping mall comparison experiment
in which something like 60 percent of consumers couldn't tell
HDTV from NTSC?
Chris Roth
The First Amendment Teach-In
[And thanks to Colin Hunter from Baltimore. Hope I've spelled
your name correctly.]
> Anyone have any info on the shopping mall comparison experiment
> in which something like 60 percent of consumers couldn't tell
> HDTV from NTSC?
Got no info but I believe it. I looked at HDTV at Siggraph a couple
years ago and it sure was a letdown. Didn't seem worth the hoopla.
People keep talking about near photographic realism or some such
hype, but it just looked like you were seein the detail you get in a
computer monitor. Sure, that's better than NTSC, but not thousands of
dollars better (nor millions when it comes to infrastructure), IMHO.
AK
CVC (Compact Video Cassette) the first portable video
cassette system in the early eighties concieved by
a japanese company named Funai (long before VHS-C
and Video 8) which later emerged to Quartercam.
The system was based on a 1/4" tape cassette with
helical scan recording.
hope that helps
-martin
--
Martin A. Blatter
bla...@amiga.icu.net.ch
> Teldec laser video disks
Are you sure that Teldec disks were read by laser? I'm almost certain
that they were grooved and mechanically read via a stylus. They also had
a very short playing time (10-15 minutes?).
> Baird grooved video disks (what was it officially called?)
Phonovision
Add the Baird "televisor" to the list of unsuccessful technologies. It
was the very first working demonstration of the live transmission of
moving images. It used a rapidly spinning Nipkow disk with holes cut in a
spiral and a flashing light to display the image (a similar disk/photcell
combination was used as the "camera").
J. Colin R. Hunter
>> Can anyone add to this list of failed media technologies?
>> 8-track
>> Elcaset
>> stylus-in-groove videodisc
>> Qube TV
>> the nonrewindable, rentable videocassette
>> Beta
>
>CED (Capacitance Electronic Disc) RCA
>VHD/AHD (Video High Density/Audio High Density)
>LVR (Longitudonal Video Recording) Toshiba/BASF
>Video 2000/VCC (Video Compact Cassette) Philips
>SVR (Super Video Recording) Grundig
^^^
tape speed reduced successor of...
VCR (Video Cassette Recording, about 14 cm/s) Philips
VCR Longplay (same as VCR with reduced tape speed, about 6,5 cm/s) Philips
DSR (Digital Satellite Radio) German Telekom (started in 1989, only 16
stations, to be dumped in
1997)
Quadrophonic Audio
Exactly! :-)
Richard
---------------------------------------------------------------------
Richard Lewis <rich...@coopinf.demon.co.uk> tel: +44 171 213 8591
>> Can anyone add to this list of failed media technologies?
Well, here in the UK there was British Satellite Broadcasting. After
shelling out 350/GBP (about 500 dollars) for a satellite receiver that
could receive nothing else but BSB (the frequencies were all preset,
and it used the unique D-MAC Eurocypher system) no-one was very amused
when Rupert Murdoch took over BSB and closed it down after less than a
year. Philips and Ferguson (Thomson) especially, as they had 100,000
of these receivers stockpiled.
-----------------------------------------------------------
alec; in havenpool, wessex
-----------------------------------------------------------
"Time and toast wait for no man" said Dougal
> >SVR (Super Video Recording) Grundig
> ^^^
> tape speed reduced successor of...
> VCR (Video Cassette Recording, about 14 cm/s) Philips
> VCR Longplay (same as VCR with reduced tape speed, about 6,5 cm/s) Philips
VCR-LP and SVR weren't just reduced speed versions of VCR. The VCR
standard used video heads slanted at the same angle, but with guard bands
to prevent cross-talk between adjacent tracks (like U-matic). VCR-LP
removed the need for guard bands by slanting each head at 180 degrees to
each other. This automatically cancelled out crosstalk and greatly
increased the useable tape area for actual video recording. The
combination of reduced speed tape and introduction of opposite slanted
head azimuth recording gave VCR-LP its total recording time of 3 hours per
cassette (LVC-180). SVR machines further decreased tape speed and used
special high performance heads to give a maximum of 4 hours per cassette
(SVC-240). VCR-LP and SVR video performance both outperform standard VHS,
but as we all know, what doesn't?
Colin Hunter