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Topic: I'm learning about C.E.D. Capacitance Electronic Video Disc
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Paul Adsett
Film God
Posts: 5003
From: USA
Registered: Jun 2003
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posted January 02, 2017 04:13 PM
But a great idea nevertheless, at the time it must have seemed like a logical progression of the audio LP record to the RCA engineers.
Another idea at the time, that I seem to vaguely recall, was an invention by CBS to print movies on to super 8 film by direct scanning of each frame with an electron beam. One can imagine that the definition would have been far superior to optical reduction from 16mm or 35mm. But, for whatever reason, the system never took off.
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Osi Osgood
Film God
Posts: 10204
From: Mountian Home, ID.
Registered: Jul 2005
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posted January 03, 2017 12:51 PM
I must say, I was always fascinated with these earlier "laserdiscs"! I mean, for some odd reason, it seemed more plausible with the much more well known laserdiscs to play, but these other discs to play video as well as audio, being made out of the same materials as you would for a regular LP record, well, i thought it was magic ....
Until I realized that, just like you're average LP record, everytime you played it, it laid down extra "scratches" to the movie, and they tended to wear out fairly quick, compared to laserdiscs.
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"All these moments will be lost in time, just like ... tears, in the rain. "
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Mitchell Dvoskin
Expert Film Handler
Posts: 128
From: West Milford, NJ
Registered: Jun 2008
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posted January 06, 2017 03:18 PM
The CED system was the wrong idea at the wrong time.
It was introduced 3 years after the superior LaserDisc, 4 years after VHS, and 5 years after ßetamax.
CED never overcame it's technical deficiencies, which was mainly that the micro grooves in the record were so sensitive to dust and defects that many discs skipped, or developed skipping problems.
LaserDisc did not have these problems, and was supported by multiple manufacturers and more movie studios. CED was a flawed product from the start, and by the time they worked out most of the technical kinks, it was too late. I remember looking at it in 1981 just before I bought my first LaserDisc player. It seemed crazy to buy something that required a needle in a groove, and a record so sensitive that it has to be encased in a special protective sleeve. Even finger prints on the record would cause them to skip.
Oh, and Osi, "LaserDisc" was a registered trademark belonging to Pioneer and Philips for their optical disc storage system. CED stood for Capacitance Electronic Disc, a totally different technology.
I do remember that the first stereo home video release of It's A Mad, Mad, Mad World was on CED (pan & scan). It was almost a decade until it was released in stereo on LaserDisc.
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