Wednesday, December 22, 2010
Kodak: Plugged In - We Had No Idea
[This is another extraordinary article from Kodak: Plugged In]
Written by Steve Sasson, the inventor of the digital camera, will be inducted today into the Consumer Electronics Hall of Fame.
In December of 1975, after a year of piecing together a bunch of new technology in a back lab at the Elmgrove Plant in Rochester, we were ready to try it. “It” being a rather odd-looking collection of digital circuits that we desperately tried to convince ourselves was a portable camera. It had a lens that we took from a used parts bin from the Super 8 movie camera production line downstairs from our little lab on the second floor in Bldg 4. On the side of our portable contraption, we shoehorned in a portable digital cassette instrumentation recorder. Add to that 16 nickel cadmium batteries, a highly temperamental new type of CCD imaging area array, an a/d converter implementation stolen from a digital voltmeter application, several dozen digital and analog circuits all wired together on approximately half a dozen circuit boards, and you have our interpretation of what a portable all electronic still camera might look like.
Vintage 1975 portable all electronic still camera
It was a camera that didn’t use any film to capture still images - a camera that would capture images using a CCD imager and digitize the captured scene and store the digital info on a standard cassette. It took 23 seconds to record the digitized image to the cassette. The image was viewed by removing the cassette from the camera and placing it in a custom playback device. This playback device incorporated a cassette reader and a specially built frame store. This custom frame store received the data from the tape, interpolated the 100 captured lines to 400 lines, and generated a standard NTSC video signal, which was then sent to a television set.