Appeal No. 95-4530
Application 08/077,993
the order of the elements are opposed to that from said
oscillation device;
a silence distinction circuit to compare the signal
from the lines with the pulse voltage signals from said
oscillation device to thereby issue a discrimination as
there is no signal when it does not have a confirmation that
the pulse signals originates from said oscillation device;
and
a voltage value measurement circuit adapted to confirm
voltage values at end portions connected to the two lines
and an electric power line with predetermined values.
21. A system for determining an electric wiring state in
first and second conductors having first and second source
portions and end portions, the first and second source portions
being short-circuited to ground potential, comprising:
an oscillator connected to one of the first and second
conductors, generating a pulse signal conducted by the one of the
first and second conductors in first and second directions as
first and second pulse signals;
a voltage measure circuit connected to said first and second
conductors, detecting the first and second pulse signals at the
first and second end portions of the first and second conductors,
respectively; and
means for discriminating the electric wiring state between
the first and second source portions and the first and second end
portions by comparing a difference in polarity between the first
and second pulse signals and the pulse signal.
The reference relied upon by the examiner as evidence of
obviousness is:
Metcalf et al. 4,445,085 April 24, 1984
The appealed claims stand rejected as follows:
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