LabGuy's World: Remembering
(International Video Corporation)
IVC's
world headquarters building used to be at: 675 Almanor Avenue Sunnyvale,
California. International Video Corporation flourished from about 1967
well into the late 1980s. IVC manufactured dozens of models of VTR's, cameras,
film chains, switchers and other video equipment for the low end broadcast
and high end industrial markets. They sold equipment into virtually every
country in the world. I personally remember seeing the IVC color cameras
at TV station KRCR, channel 7 in Redding,
California, during a high school class field trip. (Click
on the small pictures to enlarge them. Use your browser's back button to
return.) .
IVC 1-11: The broadcast VTR that
never was!
The
IVC 1-11, 1 inch Broadcast VTR is designed for the user looking for the
performance of 1" VTRs without excessive cost and complexity. (Approximately
$36,000) Compact, flexible and simple to operate, the IVC 1-11 employed
a new signal system derived from the IVC-9000 mastering VTR, Dolby (TM)
Video processing and a dedicated integral digital timebase corrector. The
result is full bandwidth low noise video for a multigeneration performance
comparable with any broadcast VTR. The IVC 1-11 is available, with a variety
of packaging options including space saving transport and electronics assemblies
separable by up to 10 feet (3 meters).
Easily
integrated with auto editing systems, the IVC 1-11 provides high speed
tape shuttle for fast access to any recorded tape segment. All controls
for monitoring and optimization are on the front control panel with clear
meter and/or LED readouts. A microprocessor based timer with programmable
memory makes scene material location and retrieval fast and accurate. A
full range of connectors, audio on XLR, video on BNC, is easily accessible
on the 1-11's rear panel. Along with a remote foot switch brake release,
for use with any 1-11 configuration.
The
heart of the IVC 1-11 is the new five head scanner. Full field recording
and frame accurate video insert and assemble edits are accomplished with
the aid of a new field replaceable head wheel containing an integral flying
erase head plus separate sync and video heads. The entire video signal
is preserved with no dropout at the video head crossover point. The video
head wheel is field replaceable and has a warranted life of 1000
hours, using standard high coercivity cobalt doped ferric oxide tape. All
scanner coupling is inductive using precision ground rotary transformers.
Video Multigeneration: Your edited masters will look great! In the
1-11, a combination of hot pressed ferrite heads, an integral digital T.B.
C. a full bandwidth high band recording system - derived from the IVC-9000
mastering VTR - gives multigeneration performance you can be proud of,
a capability matching other broadcast oriented formats at an unmatched
price.
Accessibility
and ease of maintenance are carefully engineered features of the IVC
1-11. The use of large PCB's mounted on gull wing panels allows the grouping
of major system functions on each board simplifying fault isolation and
repair on site. All PCB's are plug-in with access to both top and bottom.
The two major components of the 1-11 are connected by a sheathed cable
that carries all servo, video and command signals with one power switch
activating both units.
(Information edited from a proof copy of the sales
brochure dated: 4/80)
This machine,
sadly, never went into production. Only two prototype machines were built.
The IVC 1-11 is a classic case of a product being to late for its market
place. By the time this machine was ready for production, in 1980, the
1 inch C broadcast format had been adopted by the television industry.
This truly was the last video recorder developed by IVC. I'd like to thank
William Meyer for all of the excellent IVC historical information that
he has provided for us here.
IVC VCR-100:
IVC
VCR-100, Video Cartridge Recorder.
The VCR-100 was
a video cartridge recorder and conformed to the same physical recording
format as all of IVC's 1 inch reel to reel machines. A tape cartridge,
unlike a cassette, does not contain an integral take up reel. Instead,
the machine contains an internal, fixed take up reel. When a roll of tape
weighs 6 to 8 pounds, the design engineer had to work over time
to trim away the fat. Removing the take up reel from the cassette housing,
and saving a pound or two, was totally logical. (More about this
in a moment.)
The 8" reel prior to installation in the
cartridge.
The VCR-100 New Scotch
461 tape came with clear leader tape for use in this machine. The leader
functioned as a component of the machine's auto threading system. The leader
was removed when the tape was used on an open reel machine.
Loading
the cartridge into the IVC 100.
At startup, the
feed reel, inside the cartridge, would spin very quickly. In fact, it would
spin so fast that it would literally launch the leader tape from the spool.
The leader was then guided, by the walls inside the cartridge, to a special
guide track called the "C channel". The C channel guided the leader
tape around the intended tape path and delivered it to the internal take
up spool, which was also spinning. The stiff plastic leader tape would
remain in the C channel, but the much more flexible recording tape, would
be pulled out of the C channel to drop neatly onto the guides and heads.
This ingenious process, like most ingenious processes, works great. (...on
paper!)
.
The VCR-100 had it's
head drum mounted upside down. This allowed gravity to assist in the threading
of the tape. This tid-bit of info was provided by William Meyer, who used
to work at IVC.
.
If this sounds a bit like a
Rube Goldberg mechanism to you, you're right! Panasonic's Omnivision format
and CBS's EVR both worked this way, too. All of these formats had
fixed internal take up spools. If anything went wrong and the tape or film
jammed, you could not remove the cartridge! It required disassembling the
machine, and attempting to rethread the tape onto the guides. Failing that,
you spent the next hour or two pulling the tape out by hand and wrapping
back it onto the feed reel!
.
IVC 500 Series VTR's:
IVC-500,
1 inch, reel to reel, colour VTR.
IVC 700 Series VTR's:
IVC-700,
1 inch, reel to reel, colour VTR.
New!
IVC-711, close up look at this
1 inch, reel to reel, colour VTR.
New! IVC-711,
a better view.
More info and pictures
are needed!!! Help?
IVC-800 Series VTR's:
IVC-800A,
1 inch, reel to reel, colour VTR.
New!
IVC-801, Internal view!
New! IVC-801,
1 inch, reel to reel, colour editing VTR.
IVC-860, 1 inch, reel to reel, colour editing
VTR.
IVC-871,
1 inch, reel to reel, colour editing VTR.
More info and pictures are needed!!! Help?
IVC-961P:
1.
2.
3.
4. Note
2.
For more info about this
machine, Click here to
visit John Sangster's IVC-961P page.
IVC Time base correctors:
TBC-2001
TBC-2002
IVC Video Heads:
This is an example of the video head used in the model(s) 700, 800 and
900s. If you look very closely, you can easily see the ferrite (black)
material that formed the actual recording surface. The 7 or 8 turns of
microscopic copper wire, which transform the ferrite into an electromagnet,
are also visible in the picture. This fragile assembly is glued to an aluminum
mount which is called the "boot".
IVC-9000:
IVC-9000
- 2 inch Helical, Colour Editing VTR. Notes
3. & 5
This machine was phenomenal! It worked in ALL
world video standards. It had a whopping 8 Mhz direct (raw) bandwidth!
The IVC-9000 used 2 inch video tape in a Segmented Helical Scan
configuration. Video was direct recorded to tape.
Specifications:
Tape Width: 2 inch, Linear
tape speed: 8.00 IPS, Scanner Speed: 9000 RPM, Relative tape speed: 1,500
IPS.
Design Team:
Barrett E. Guisinger,
Donald E. Morgan, Bert H. Dann, Joseph Roizen, Nikola Vidovic and William
Moore. Mr. Guisinger was the overall system designer, and also designed
the signal system and time base corrector.
The IVC-9000 had one other interesting mode.
It could record a 655 line picture at 24 frames per second. This is specifically
for the film industry. The model number of this film frame rate machine
was: IVC-9000M, the M standing for MOVIE or maybe "costs even MORE".
.
Does anyone have any more information about the
IVC-9000, especially the 24 FPS mode IVC-9000M? If so, please send me an
email.
Notes / Credits:
1. All material on this page (C)1998 Phydeaux SoftWorks / Richard
Diehl.
2. VCR-100, IVC-700, IVC-871, IVC-961P & TBC's photos
and information courtesy of John Sangster.
3. All IVC 1-11 photos and information provided by William Meyer.
4. Photo of the IVC-9000 provided by Wesley Orr.
5. Photo of the IVC-860 provided by Gary Duck.
6. Photo of the IVC-711 & IVC-801 provided by Michael Niermann.
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Last updated: January 09, 2005 |