Re: Beagle Bros and Wonderful disk drive noises

["Carl R. Friend" <carl.friend@swec.com>]

A.R. Duell wrote:
> 
> 
> Seriously, there was a thing called a 'flying spot scanner' used to
> transfer frames of cine (movie) film to television. It used a CRT with the
> light from the screen being optically focused onto the the frame of the
> film. A single photodector (originaly a vacuum photocell or
> photomultiplier) recorded the ammount of light that passed through the
> frame. The electron beam was scanned over the CRT screen as normal (at a
> constant intensity), and the output of the photocell was an electronic
> representation of the image on the film.

   This sounds amazingly like an electronic equivalent to John Logie
Baird's mechanical apparatus which was a very early form of television.

   Posts like this make me realise that no matter how drastically
things may change (68000 CPUs vs. spinning wheels with lenses) they
have the power to stay the same.

   Thanks!

-- 
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| Carl Richard Friend (UNIX Sysadmin)            | West Boylston       |
| Minicomputer Collector / Enthusiast            | Massachusetts, USA  |
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