Appeal No. 96-0322
Application 08/123,920
current component of the alternating signal is outside given
values. Claims 20, 21 and 23 are the only independent claims.
Representative claim 20 is reproduced below:
20. A method for monitoring an alternating signal
comprising the steps of: modifying said alternating signal into
a modified signal having characteristics over time that are a
measure for a mark-to-space ratio and/or for a direct-current
component present in said alternating signal; comparing said
modified signal with reference signals and results establishing
said mark-to-space ratio and/or direct-current component of said
alternating signal; constructing a control signal from said
reference signals and a smoothed pulsed signal, said control
signal being a measure of a potential malfunction when said mark-
to-space ratio exceeds a given value and/or said direct-current
component of said alternating signal is outside specifically
given values; said alternating signal controls means having
activities decreased to standby in response to said results of
said comparing step.
Opinion
We will not sustain the rejection of claims 12, 13, 16, 17
and 20-23 under 35 U.S.C. § 102(b) as being anticipated by Denk.
Anticipation is established only when a single prior art
reference discloses, either expressly or under the principles of
inherency, each and every element of the claimed invention. In
re Spada, 911 F.2d 705, 708, 15 USPQ2d 1655, 1657 (Fed. Cir.
3
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