Appeal No. 96-0322
Application 08/123,920
been allowed.
References relied on by the Examiner
Denk et al. (Denk) 4,443,787 April 17, 1984
The Rejections on Appeal
Claims 12, 13, 16, 17, and 20-23 stand finally rejected
under 35 U.S.C. § 102(b) as being anticipated by Denk.
A rejection of claims 11, 15, 17 and 19 under 35 U.S.C.
§ 112, second paragraph, has been withdrawn by the examiner.
(Br. at 2 and Answer at 2).
The Invention
The invention is directed to a method and apparatus for
monitoring an alternating signal. A modified signal is generated
having characteristics which are a measure of either the mark-to-
space ratio or the direct current component in the alternating
signal. Then, a comparison is made with respect to reference
signals to provide results establishing the mark-to-space ratio
or the direct current component of the alternating signal. A
control signal is constructed which indicates malfunction when
the mark-to-space exceeds a given value and/or when the direct
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