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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Thu Aug 05, 2010 1:00 am Post subject: The beginnings of the CRT projector as we know it........ |
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I was reading a post (perisoft's) that mentioned an article from Popular Science and remembered that Art Tucker showed me an article about video projection from the same magazine.
http://books.google.com/books?id=iwEAAAAAMBAJ&pg=PA90&dq=popular+science+art
hur+tucker&hl=en&ei=NLhZTNXHMIm2ngePqoWcCQ&sa=X&oi=book_result&ct=result&res
num=1&ved=0CC8Q6AEwAA#v=onepage&q&f=false
What a blast from the past. I destroyed a version of the Aquabeam device when ESP (Electronic Systems Products) was moving to a different building. Carrying it down the stairs from the engineering spaces to put in the truck and I missed a step and we both came tumbling down. The projector head was toast. I felt terrible about it but by then it was just a curiosity.
Art was really a good guy. He hit some of the beaches in the Pacific with the marines in WWII but didn't much talk about it. Became a pilot after the war and had an interest in helicopters. I'm not sure how he got into video projectors but I can remember seeing some strange old stuff in the lab. Can you imagine a neck card made with vacuum tubes?
Scott
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"Were we directed from Washington when to sow and when to reap, we would soon want bread."
Thomas Jefferson
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Thu Aug 05, 2010 2:22 am Post subject: |
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Thanks for the link Scott ! It was a real blast from the past. I spent a lot of money at Edmund scientific when I was a kid building my first telescope and Tesla coil. 
Another good read...
http://members.chello.nl/~h.dijkstra19/page3.html
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Thu Aug 05, 2010 4:15 pm Post subject: |
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Guys!
Advent was my start. The VideoBeam 1000 was built for IBM in small numbers with RGB input, we hooked up 3279 color terminals that had RGB out, and the 3277 when equipped with a video interface made by Hughes Aircraft. This involved connecting ribbon cables with several dozen wire wrap connections. Awkward, but it did give a picture. When Advent tanked we continued with the Novabeam for a while, then Electrohome rolled out their first monochrome projector called EDP56. I got pretty good at looking inside terminals, scoping the video and sync, and creating hookup harnesses to feed into Electrohome's interface box called IM56. On occasion we would connect three IM56s for RGB, then Electrohome began offering their color interfaces. All before Extron hit the market.
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Last edited by Tim in Phoenix on Thu Aug 05, 2010 9:53 pm; edited 1 time in total
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Ben851
Joined: 13 Sep 2008
Posts: 221
Location: Ottawa, Ontario
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Thu Aug 05, 2010 5:24 pm Post subject: |
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| Tim in Phoenix wrote: | Guys!
Advent was my start. The VideoBeam 1000 was built for IBM in small numbers with RGB input, we hooked up 3279 color terminals that had RGB out, and the 3277 when equipped with a video interface made by Hughes Aircraft. This involved connecting ribbon cables with several dozen wire wrap connections. Awkward, but it did give a picture. When Advent tanked we continued with the Novabeam for a while, then Electrohome rolled out their first monochrome projector called EDP56. I got pretty good at looking inside terminals, scoping the bideo and sync, and creating hookup harnesses to feed into Electrohome's interface box called IM56. On occasion we would connect three IM56s for RGB, then Electrohome began offering their color interfaces. All before Extron hit the market.
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Tim! You should have started a company like Extron!
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Thu Aug 05, 2010 9:58 pm Post subject: |
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Not exactly; that is a tube and lens from an EDP56, the video interface was a small box maybe four inches by three inches by an inch and a half. It could be powered from a wall wart or five volts from a terminal.
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