Appeal No. 1999-1056
Application No. 08/525,844
appellants that even if the teachings of Ito were combined
with those of Yamamoto, the resulting steering control system
would not have included all of the limitations of claims 1 and
6. Thus, the examiner has failed to establish the prima facie
obviousness of the invention defined by these claims. See, In
re Royka, supra.
Ito discloses a system and method “for controlling a
steering reaction force for a vehicle which improves the
easiness in steering operation of the steering wheel” (col. 2,
lines 8-10). Ito describes two embodiments. In both
embodiments, the steering torque or reaction force T of the
c
steering wheel 1 is detected by a sensor 8 and adjusted by
means of a
computer-controlled servo motor DM so as to become
substantially equal to a calculated target steering torque or
reaction force value T (col. 5, lines 17-20 and col. 6, lines
C
33-38). In the first embodiment (Figures 2-4), the target
steering torque T is calculated using the formula T = K"*.C c
In the second embodiment, the target steering torque is
adjusted according to the estimated value of two motion state
7
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