Appeal No. 1999-2764
Application No. 08/863,228
RNG . The operation of the system is summarized in col. 2,
D
lines 54 to 66, as:
In general, mode 1 control basically
controls vehicle speed in a conventional manner,
such that the vehicle 10 approaches the desired
range, but does not violate it, i.e. does not
allow range to be less than the desired range.
Mode 2 basically establishes, based on the
driver’s spacing input, an absolute minimum
distance, shown in FIG. 1 as D , and controls
MIN
vehicle deceleration A such that as range
D
approaches D , V approaches V . When A , whichMIN O T D
decreases in magnitude as V approaches V ,O T
Reaches a predetermined minimum deceleration
value, it is held at that value until RNG is
A
approximately equal to RNG . Mode 1 control
D
then operates to control the vehicle speed.
Chakraborty discloses a warning system usable in a
vehicle having a cruise control system which may automatically
decelerate the vehicle (col. 5, lines 45 to 52). Upon
detection of a forward (preceding) vehicle, the system
determines the deceleration capability of the vehicle on it is
mounted, and then determines the potential for a collision,
i.e., if the vehicle’s deceleration capability is insufficient
to avoid a collision without operator intervention (col. 2,
lines 35 to 40; col. 7, line 29, to col. 8, line 10). If the
system determines that a collision is possible, the operator
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