Appeal No. 1998-2867
Application No. 08/362,747
97. A method for detecting faults in a sensor,
comprising
generating a test signal,
simultaneously transmitting said test signal to an input
of said sensor and to a first input of a time measuring
device,
outputting said test signal from an output of said
sensor, after it has been delayed by passing through said
sensor, to a second input of said time measuring device, and
determining a time difference between said delayed test
signal at said second input and said test signal at said first
input, and issuing an error signal if said time difference is
not within a predetermined range.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Leiber et al. (Leiber) 4,085,979 Apr. 25,
1978
Bleckmann et al. (Bleckmann) 4,546,437 Oct.
08, 1985
Buchschmid et al. (Buchschmid) 4,652,818 Mar. 24,
1987
Claims 81 through 85, 89, 97, and 101 stand rejected
under 35 U.S.C. § 103 as being unpatentable. The examiner
applies Leiber alone against claims 81 through 83, 97, and
101, Leiber in view of Bleckmann against claims 84 and 89, and
Leiber in view of Buchschmid against claim 85.
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