<s>
A	O
flying-spot	B-Algorithm
scanner	I-Algorithm
(	O
FSS	O
)	O
uses	O
a	O
scanning	O
source	O
of	O
a	O
spot	O
of	O
light	O
,	O
such	O
as	O
a	O
high-resolution	O
,	O
high-light-output	O
,	O
low-persistence	O
cathode	B-Device
ray	I-Device
tube	I-Device
(	O
CRT	O
)	O
,	O
to	O
scan	O
an	O
image	O
.	O
</s>
<s>
Usually	O
the	O
image	O
to	O
be	O
scanned	O
is	O
on	O
photographic	O
film	O
,	O
such	O
as	O
motion	O
picture	O
film	O
,	O
or	O
a	O
slide	O
or	O
photographic	B-Algorithm
plate	I-Algorithm
.	O
</s>
<s>
Telecines	B-Application
that	O
use	O
a	O
monochrome	O
CRT	O
as	O
the	O
light	O
source	O
can	O
be	O
referred	O
to	O
as	O
flying-spot	B-Algorithm
scanners	I-Algorithm
.	O
</s>
<s>
The	O
advantage	O
of	O
the	O
FSS	O
technique	O
is	O
that	O
as	O
colour	B-General_Concept
analysis	I-General_Concept
is	O
done	O
after	O
scanning	O
;	O
simple	O
dichroics	O
may	O
be	O
used	O
to	O
split	O
the	O
light	O
to	O
each	O
photomultiplier	O
—	O
and	O
there	O
are	O
no	O
registration	O
errors	O
,	O
as	O
would	O
have	O
been	O
introduced	O
by	O
early	O
electronic	O
cameras	O
.	O
</s>
<s>
Historically	O
,	O
flying-spot	B-Algorithm
scanners	I-Algorithm
were	O
also	O
used	O
as	O
primitive	O
live-action	O
studio	O
cameras	O
at	O
the	O
dawn	O
of	O
electronic	O
television	O
,	O
in	O
the	O
1920s	O
.	O
</s>
<s>
Flying-spot	B-Algorithm
scanner	I-Algorithm
technology	O
was	O
later	O
implemented	O
by	O
DuMont	O
Laboratories	O
in	O
the	O
Vitascan	O
color	O
television	O
system	O
,	O
released	O
in	O
1956	O
.	O
</s>
<s>
Flying-spot	B-Algorithm
scanners	I-Algorithm
were	O
used	O
to	O
scan	O
both	O
still	O
print	O
sides	O
and	O
motion	O
picture	O
film	O
for	O
both	O
broadcast	O
TV	O
and	O
later	O
Post-production	O
use	O
.	O
</s>
<s>
There	O
would	O
be	O
a	O
slide	O
changer	O
like	O
on	O
slide	B-Device
projectors	I-Device
to	O
change	O
the	O
slide	O
.	O
</s>
<s>
Early	O
manufactures	O
of	O
Flying-spot	B-Algorithm
scanners	I-Algorithm
were	O
Bosch	O
Fernseh	O
and	O
Cintel	O
.	O
</s>
<s>
Cintel	O
made	O
Flying-spot	B-Algorithm
scanners	I-Algorithm
from	O
the	O
1950s	O
until	O
the	O
2000s	O
.	O
</s>
<s>
The	O
flying-spot	B-Algorithm
scanner	I-Algorithm
tube	O
had	O
limit	O
life	O
span	O
and	O
quantity	O
decease	O
with	O
use	O
.	O
</s>
<s>
Most	O
flying-spot	B-Algorithm
scanners	I-Algorithm
use	O
a	O
green	O
light	O
that	O
is	O
shone	O
through	O
the	O
exposed	O
film	O
image	O
into	O
a	O
lens	O
.	O
</s>
<s>
Flying-spot	B-Algorithm
scanners	I-Algorithm
were	O
replaced	O
with	O
charge-coupled	B-Algorithm
device	I-Algorithm
Line	O
Array	O
–	O
CCD	O
for	O
imaging	O
and	O
a	O
white	O
light	O
to	O
the	O
film	O
.	O
</s>
