Appeal No. 1999-1345 Page 3
Application No. 08/482,556
tuned, via feedback, to the lowest bandwidth sufficient to
pass the frequency of the detected signal.
Claim 33, which is representative for our purposes,
follows:
33. A system for detecting reflected light,
comprising:
a light source for generating a light beam;
means for sweeping the light beam across an
object;
means for detecting light reflected by the
object and for generating electrical signals
indicative of the detected light; and
circuitry means for discriminating the
electrical signals, said circuitry means including
means for filtering with a respective
cutoff frequency each electrical signal to provide a
respective output signal having a respective
bandwidth, wherein the circuitry means includes
a differentiator circuit, coupled to the
detecting means, for generating a first derivative
signal of each electrical signal.
The prior art applied in rejecting the claims follows:
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