22 Apr
2006
22 Apr
'06
9:41 p.m.
Jim Beacon wrote:
I have a high speed scanner from a 405 line mechanical
scan TV, from around
1938:
www.g1jbg.co.uk/tv1.htm
Not computer related, but interesting in its own right.
But a little off with the
discription of the way the light was
modulated. This was a great invention but limited only to B&W
scanning. Similar to a mercury delay line for digital data,
this passed a entire scan line so that you got a full intensity
scan line to be sent to rotating mirrors then to the projection
screen.Alas WWII killed the company, and everybody by then
with CRT's improved do to WWII has continued using them to this day.