Werbefilm CMX-600 erster digitaler Schnittplatz 1971ca. 1990: Editing ohne Bänder/Cassetten/MAZen (AVID)
These disk packs have 11 platters (20 recording surfaces), each platter is 14" in diameter. The disk pack holds a total of 39-megabytes of data.
Computer:
DEC PDP -11
16,000 words of core memory (16 bit), or 32 k-bytes
Blazing speed: 3 to 5 microseconds per instruction. (About 1000 times slower than a typical PC today.)
No hard drive
Disk Pack Video Storage:
Memorex digital disk drives
Each about the size of a washing machine
Drives modified to store and retrieve analog video signals
Capacity: about 5 min video per disk pack
Usually 4 to 6 drives per system, or 20 to 30 minutes of storage per system
Video System:
Bandwidth of the disk drives was less than 1 MHz...hence black and white video, without compression
Every other field of video was recorded on the disk packs, to extend storage capacity
The "lost" field was recreated using a 1-field disk memory in the 600 main unit
Audio Encoding:
Encoded as PCM data on the back porch of the video horizontal sync signal
Plus: Could hear audio in still-frame, slow-mo, etc
Minus: Quality poor, resulting from sampling problems due to jitter in the signal from the disk drives.
Light Pen Control:
This was a technology used primarily by the military
CBS wanted to avoid conventional controls, to minimize union jurisdiction issues
It also provided some "gee-whiz" appeal
The jitter again was due to jitter in the signal form the disk drives
Software Menus/Controls
The names of the controls on the screens and the logic of the operations were based on conversations with film editors, and observation of them cutting film. The goal was to make it as easy as possible for a film editor to operate the new system.
Console:
A mockup of the console was first built out of plywood. It had adjustable tilt and height of the desk surface, monitors, etc. This was used to arrive at the desired "human engineering" parameters. Then an outside design firm was hired to make the final model.
CMX People
Bill Butler - President
Gerry Heitel - Sales Manager
Jerry Youngstrom - Engineering Manager
Dave Bargen - System Engineering Manager
Jim Adams - Programmer
Steve Foreman - Programmer
Will Pearson - Video Engineer
Yves Faroudja - Contract video engineer
Gene Simon - Super Tech
CBS People
Joe Flaherty - VP R&D
Bill ? - Liaison - CBS/CMX
David Horrowitz - Liasion - CBS/CMX
Awards:
CMX received an Emmy award for the 600
The design group received a design award for the console
oh ja, wenn ich da an meine erste 64 GB P2-Karte denke, 1800,- € netto ...
Dafür gibt es doch nun den Lasergraphics...... macht auch 8mm in HD. ;-)Spielte damals für uns keine besondere Rolle, weil wir die Super8-Qualität speziell mit den bespurten Kassetten als deutlich überlegen empfanden (Ausnahme 16mm Film), was sich heute wohl als Irrtum darstellt.
Sag das mal den Leuten, die sich grundsätzlich ein Monorichtrohr auf die Kamera schrauben ;-)Mitunter kann der Ton viel mehr berühren als dass Bild.