Appeal No. 1997-2478
Application 08/361,554
with a vehicle speed sensor signal sensed by sensor 16.
According to Hiwatashi, the use of variable width dead band
filters set in accordance with vehicle speed optimizes
suspension control. See column 2, lines 11-29.
Accordingly, while Hiwatashi teaches the use of an upward
and downward acceleration and upward and downward velocity as
control parameters for controlling the condition of the
suspension system, it does not teach the use of road roughness
or smoothness to adjust the threshold value of the preselected
control parameter, much less the use of upward and downward
acceleration, or upward and downward velocity derived
therefrom, to judge road roughness.
To summarize:
(1) Akatsu does not teach using road roughness for any
purpose whatsoever,
(2) Kawagoe teaches using road roughness or smoothness to
adjust the threshold value of the control parameter, but does
not teach or suggest determining road roughness in the way
called for in the claims on appeal, and
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