
US
2004/0107031
A1
VEHICLE
DRIVE
SYSTEM
CONTROLLER
BACKGROUND
OF
THE
INVENTION
[0001]
The
present
invention
relates
to
a
method
for
improving
the
level
of
security
in a
vehicle,
and
more
particularly,
to
a
controller
for
controlling
the
starting
and
stopping
of
an
engine.
[0002]
A
conventional
vehicle
key
is
inserted
in a
key
cylinder,
Which
is
arranged
on
a
steering
column.
A
driver
turns
the
vehicle
key
and
moves
the
key
cylinder
betWeen
functional
positions
to
start
and
stop
the
engine.
HoWever,
in
such
prior
art
mechanical
key
systems,
the
engine
may
be
started
or
stopped
by
using
a
copied
key
or
by
picking
the
lock
of
the
key
cylinder.
Accordingly,
there
is
a
demand
for
a
device
that
improves
the
security
level
of
a
vehicle.
[0003]
Japanese
Laid-Open
Patent
Publication
Nos.
2001
289142
and
2001-311333
describe
an
engine
drive control
system
that
performs
electronic
veri?cation
to
enable
the
starting
of
the
engine.
This
improves
the
security
level
of
the
vehicle.
The
engine
drive
control
system
includes
a
portable
device,
Which
is
provided With
a
communication
function,
and
an
engine
drive
controller,
Which
is
installed
in
the
vehicle.
The
starting
of
the
engine
is
enabled
under
the
condition
that
communication
is
properly
established
betWeen
the
portable
device
and
the
engine
drive
controller.
When
an
engine
starting
sWitch
is
operated
to
start
the
engine,
the
engine
must
be
in
the
state
in
Which
starting
is
enabled.
This
prevents
a
third
person,
Who
is
not
carrying
the
portable
device,
from
starting
the
engine.
This
also
simpli
?es
the
operations
for
starting
the
engine
since
the
engine
may
be
started just
by
operating
the
engine
starting
sWitch.
[0004]
HoWever,
in
such
an
engine
control
system,
anyone
carrying
the
portable
device
may
start
the
engine.
Thus,
When
the
driver
loses
the
portable
device
and
a
third
person
?nds
the
portable
device,
the
third
person
Would
be
able
to
start
the
engine.
SUMMARY
OF
THE
INVENTION
[0005]
Accordingly,
it
is
an
object
of
the
present
invention
to
provide
a
vehicle
controller
that
improves
the
security
level
of
a
vehicle.
[0006]
To
achieve
the
above
object,
the
present
invention
provides
a
controller
of
a
vehicle
having
an
engine
for
use
With
an
authoriZed
key
having
a
communication
function.
The
controller
includes
a
microcomputer
for
controlling
the
engine.
The
microcomputer
is
capable
of
communicating
With
the
authoriZed
key.
A
recogniZer
is
activated
When
predetermined
conditions,
including
establishment
of
com
munication
betWeen
the
microcomputer
and
the
authoriZed
key,
are
satis?ed
to
verify
Whether
a
vehicle
occupant
is
an
authoriZed
user.
The
microcomputer
enables
the
starting
of
the
engine
When
communication
is
established
With
the
authoriZed
key
and
the
recogniZer
veri?es
the
vehicle
occu
pant
as
being
the
authoriZed
user.
[0007]
Another
aspect
of
the
present
invention
is
a
method
for
controlling
a
vehicle
having
an
engine
and
a
door.
The
method
includes
transmitting
a
request
signal
to
a
predeter
mined
area
de?ned
around
the
vehicle,
unlocking
the
door
When
receiving
a
response
signal
in
response
to
the
request
signal,
verifying
Whether
a
vehicle
occupant
is
an
authoriZed
Jun.
3,
2004
user,
and
enabling
starting
of
the
engine
When
the
vehicle
occupant
is
veri?ed
as
the
authoriZed
user.
[0008]
Afurther
aspect
of
the
present
invention
is
a
system
for
controlling
an
engine
of
a
vehicle
having
a
passenger
compartment.
The
system
includes
an
authoriZed
key
capable of
Wireless
communication.
A
key
receiver
is
arranged
in
the
passenger
compartment
of
the
vehicle
to
receive
the
authoriZed
key.
A
recogniZer
is
arranged
in
the
passenger
compartment
to
image
a
vehicle
occupant
and
verify
Whether
a
vehicle
occupant
is
an
authoriZed
user.
A
communication
circuit
performs
Wireless
communication
With
the
authoriZed
key.
A
microcomputer
is
connected
to
the
recogniZer
and
the
communication
circuit.
The
micro
computer
activates
the
recogniZer
When
Wireless
communi
cation
is
established
betWeen
the
authoriZed
key
and
the
communication
circuit,
enables
starting
of
the
engine
When
the
recogniZer
veri?es
that
the
vehicle
occupant
is
an
authoriZed
user,
and
disables
starting
of
the
engine
When
Wireless
communication
is
not
established
betWeen
the
authoriZed
key
and
the
communication
circuit
unless
a
predetermined
condition
is
satis?ed.
[0009]
Other
aspects
and
advantages
of
the
present
inven
tion
Will
become
apparent
from
the
folloWing
description,
taken
in
conjunction
With
the
accompanying
draWings,
illustrating
by
Way
of
eXample
the
principles
of
the
inven
tion.
BRIEF
DESCRIPTION
OF
THE
DRAWINGS
[0010]
The
invention,
together
With
objects
and
advan
tages
thereof,
may
best
be
understood
by
reference
to
the
folloWing
description
of
the
presently
preferred
embodi
ments
together
With
the
accompanying
draWings
in
Which:
[0011]
FIG.
1
is
a
perspective
vieW
shoWing
a
passenger
compartment
including
a
drive
system
operation
apparatus
and
a
key
holder
according
to
a
preferred
embodiment
of
the
present
invention;
[0012]
FIG.
2
is
a
front
vieW
shoWing
the
drive
system
operation
apparatus
of
FIG.
1;
[0013]
FIGS.
3A
and
3B
are
perspective
vieWs
shoWing
the
drive
system
operation
apparatus
of
FIG.
1;
[0014]
FIGS.
4A
and
4B
are
perspective
vieWs
shoWing
the
key
holder
of
FIG.
1;
[0015]
FIG.
5
is
a
block
diagram
shoWing
a
vehicle
drive
control
system
according
to
a
preferred
embodiment
of
the
present
invention;
[0016]
[0017]
FIG.
7
is
a
?oWchart
for
an
irregular
mode.
FIG.
6
is
a
?oWchart
for a
regular
mode;
and
DETAILED
DESCRIPTION
OF
THE
PREFERRED
EMBODIMENTS
[0018]
A
drive
system
operation
apparatus
3
according
to
a
preferred
embodiment
of
the
present
invention
Will
noW
be
discussed.
[0019]
As
shoWn
in
FIG.
1,
an
instrument
panel
2,
Which
is
arranged
in
a
passenger
compartment
of
a
vehicle
1,
includes
a
vehicle
drive
system
operation
apparatus
3 and
a
key
veri?cation
unit
4,
Which
receives
an
authoriZed
key, or
a
portable
device
5
(refer
to
FIG.
5).
It
is
preferred
that
the
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