[Tig] mistake in wikipedia?

[Dick Hobbs]

Kevin is right to say that flying spot telecines were around a lot  
earlier than the first broadcasts. Peter Swinson will give us the  
detail of the history, no doubt, but it is a weekend so he will be on  
his boat somewhere on the waterways of eastern England.

The first person to demonstrate television was John Logie Baird, a  
rather eccentric Scottish inventor working in London. He cracked the  
idea of an analogue signal and a CRT display but could not work out  
how to make a camera. One of his systems used a mechanical revolving  
disk with a spiral of holes in front of a photo-electric cell.

Another of his systems involved a film camera feeding straight into a  
processing bath and into a flying spot telecine, giving a time of  
around one minute for "realtime" live broadcasting. One of the  
limitations of this technology was that there was no way of drying  
the film quickly enough, so the scanning end of the system - high  
voltage, high brightness CRT and all - was immersed in the wash tank.  
This would have been late 20s, early 30s, I guess.

Dick



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Dick Hobbs
Consultant and writer on television and film technology
+44 1435 830988
Skype DickHobbs
dick at hobbsonline.tv




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