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Topic: CDS-Equipped Theatres

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 04-05-2007 05:14 PM

Who remembers the DLS6 from Strong??? This pre DTS processor stored its 6 track audio on 12" Laserdisk. I was claening out some old junk the other day and found a brochure for it. I don't think they ever sold any and I wonder if this was nothing more than a mock up...? It almost looks to have some EPRAD blood to it...

Mark

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Phil Hill
I love my cootie bug

Posts: 7595
From: Hollywood, CA USA
Registered: Mar 2000

posted 04-05-2007 05:29 PM

Mark, I've been racking my pea-brain trying to remember that system's designation/nomenclature/manufacturer.

Sorta like the pre-cursor to the DTS CD disc system but on LaserDisc.

I saw it years ago at a (SMPTE?, ShoWest?, NAB?) equipment show.

I was NOT impressed.

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Joe Redifer
You need a beating today

Posts: 12859
From: Denver, Colorado
Registered: May 99

posted 04-05-2007 05:54 PM

quote: Robert Minichino
Yeah, if I went through with it I'd probably interlock...

Wow! You have multiple CDS units? One in each auditorium, perhaps? Interlock the print through the whole complex. [Razz]

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99

posted 04-05-2007 06:09 PM

yes I remeber seeing it at showeast and went to a demo at a theatre in vegas for showest one year

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Stephen Furley
Film God

Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002

posted 04-06-2007 02:18 AM

quote: Mark Gulbrandsen
Who remembers the DLS6 from Strong??? This pre DTS processor stored its 6 track audio on 12" Laserdisk.

I've heard of it, but never saw it.

Don't forget the LC Concepts system that used recordable magneto-optical discs; and didn't somebody have a system that had the digital audio on some sort of tape, a modified U-Matic video system, or something similar?

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Robert Minichino
Master Film Handler

Posts: 350
From: Haskell, NJ, USA
Registered: Dec 2005

posted 04-06-2007 07:51 AM

Might the video tape have been using the Sony PCM-1?

And didn't Kinoton/Arri have something like DTS?

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Stephen Furley
Film God

Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002

posted 04-06-2007 09:11 AM

quote: Robert Minichino
Might the video tape have been using the Sony PCM-1?

I don't know, but I think it was something similar.

quote: Robert Minichino
And didn't Kinoton/Arri have something like DTS?

Yes, I seem to remember there being something on one of the BKSTS wallcharts; the timecode was down one edge, outside the perfs, if I remember correctly.

Thank goodness some of these systems never made it; we'd have films released in about eight different formats! At least all of the surviving ones can be put on the same print.

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Richard Fowler
Film God

Posts: 2392
From: Ft. Lauderdale, FL, USA
Registered: Jun 2001

posted 04-06-2007 10:11 AM

The most notable use of a tape based PCM system was used for a run on Disney's Fantasia. LC Concept was popular in France and DTS negotiated some of similarity between their systems to be the final supplier. There was a person in the USA that had a concept to read the analog track and sync it to a digital playback device....no need for timecode; but financing and timing made that one disappear. There was also Colortek in the mid 1980's [Cool]

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Michael Coate
Phenomenal Film Handler

Posts: 1904
From: Los Angeles, California
Registered: Feb 2001

posted 04-06-2007 02:56 PM

quote: Richard Fowler
There was a person in the USA that had a concept to read the analog track and sync it to a digital playback device....no need for timecode; but financing and timing made that one disappear. There was also Colortek in the mid 1980's

Was this system, by chance, called VISTASONIC, developed by Terry Beard (who a decade later would be involved with DTS) and Paramount and used on "Popeye" (1980) and "Dragonslayer" (1981)? Or how about John Mosley's COMTRAK?

Key passages from a VARIETY article of June 4, 1980:

quote:
A new soundtrack system for motion pictures was offered as a possible international standard by inventor John Mosley, that could have far-reaching effects on the proliferation of stereophonic films and the ability to provide foreign dubbed pix at a lower cost.

The bandwidth of Comtrak fits within the international standard of one-tenth of an inch (Comtrak's width is .038 inch) and lays down alongside an Academy track, providing six tracks, each able to control a separate speaker or sound system. There are four stereo sound tracks and two tracks for technical control.

Bow of Comtrak follows an attempt three yars ago to offer a similar invention, called Colortek, to the industry.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99

posted 04-06-2007 03:12 PM

I believe it was called KaraSync

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Richard Fowler
Film God

Posts: 2392
From: Ft. Lauderdale, FL, USA
Registered: Jun 2001

posted 04-06-2007 05:19 PM

Colortek was a four channel system and Comtrak its updated cousin with 7 channels. It used a CDD pickup to read and error correct the track. I hear and saw the Colortek demo at a SMPTE convention at the former Century Plaza cinema. I later went up in the booth and saw the install in the Century soundhead. What killed the use was the QC issues that the film labs would have to maintain.....and Dolby was gaining acceptance.
FIAF film archive convention should be in progress at the moment in Tokyo. One of their presentations is "lost" formats, which will include Colortek and Comtrak. Any FIAF / Film-Tech members attending?

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Stephen Furley
Film God

Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002

posted 04-07-2007 09:47 AM

quote: Richard Fowler
Any FIAF / Film-Tech members attending?

Isn't that the organsation that Leo belongs to? I haven't heard from him recently, maybe he's there at the moment, and can report to us wen he gets back.

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John Walsh
Film God

Posts: 2490
From: Connecticut, USA, Earth, Milky Way
Registered: Oct 1999

posted 04-07-2007 01:10 PM

Yes, it was called Karasync... the inventor (John Karamond) lives and works near me, although I haven't seen him in a few years. Really nice guy; too bad his idea didn't take off. Refer to U.S. Patent 4,839,733

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99

posted 04-07-2007 02:49 PM

Didn't he also invent the soundsphere surround speaker

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Sam King
Expert Film Handler

Posts: 120
From: Los Angeles, CA
Registered: Oct 2006

posted 04-08-2007 04:15 AM

quote: Richard Fowler
There was a person in the USA that had a concept to read the analog track and sync it to a digital playback device....no need for timecode

That actually how 16mm DTS works. Yes I said 16mm DTS. The DTS processor uses the 16mm analog reader as a timecode for the disks. At a theatre I used to work for, we had a film that ran once a day for a week to qualify for Acadamy consideration and it was in 6 channel DTS 16mm.

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