3845289
Portable map display apparatus
Patent #: 4570227
Issued on: 02/11/1986
Inventor: Tachi , et al.
Road map display system with indication of a vehicle position
Patent #: 4608656
Issued on: 08/26/1986
Inventor: Tanaka , et al.
Method and apparatus for automatic calibration of magnetic compass
Patent #: 4611293
Issued on: 09/09/1986
Inventor: Hatch , et al.
Direction detecting system for vehicles
Patent #: 4672565
Issued on: 06/09/1987
Inventor: Kuno , et al.
Vehicle location display device with averaging means for correcting location information
Patent #: 4673878
Issued on: 06/16/1987
Inventor: Tsushima , et al.
Apparatus for generating a heading signal for a land vehicle
Patent #: 4734863
Issued on: 03/29/1988
Inventor: Honey , et al.
Method of forming a fabric covered spline assembly
Patent #: 4737218
Issued on: 04/12/1988
Inventor: Caldwell , et al.
Differential navigation system for remote mobile users
Patent #: 4751512
Issued on: 06/14/1988
Inventor: Longaker
System and method for navigating a vehicle
Patent #: 4782447
Issued on: 11/01/1988
Inventor: Ueno , et al.
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Vehicle navigational system and method
Patent #: 4796191
Issued on: 01/03/1989
Inventor: Honey , et al.
Method and apparatus for automatic calibration of magnetic compass
Patent #: 4797841
Issued on: 01/10/1989
Inventor: Hatch
Method of processing output data from geomagnetic sensor
Patent #: 4831563
Issued on: 05/16/1989
Inventor: Ando , et al.
Correcting method and correcting errors in a terrestrial magnetism heading sensor
Patent #: 4862398
Issued on: 08/29/1989
Inventor: Shimizu , et al.
Apparatus and method for displaying a map
Patent #: 4914605
Issued on: 04/03/1990
Inventor: Loughmiller, Jr., et al.
Satellite-based position-determining system
Patent #: 4918609
Issued on: 04/17/1990
Inventor: Yamawaki
Route searching system of navigation apparatus
Patent #: 4926336
Issued on: 05/15/1990
Inventor: Yamada
Route end node series preparing system of navigation apparatus
Patent #: 4937753
Issued on: 06/26/1990
Inventor: Yamada
Navigation device for use in a vehicle
Patent #: 4964052
Issued on: 10/16/1990
Inventor: Ohe
System and method for displaying present position for moving object
Patent #: 4970652
Issued on: 11/13/1990
Inventor: Nagashima
Road data generating method for use in an on-board navigation system
Patent #: 4982332
Issued on: 01/01/1991
Inventor: Saito, et al.
Method and apparatus for determining a route between a starting point and a destination
Patent #: 4984168
Issued on: 01/08/1991
Inventor: Neukrichner, et al.
Navigation apparatus and matching method for navigation
Patent #: 4989151
Issued on: 01/29/1991
Inventor: Nuimura, ;, , , --> Nuimura
Vehicular navigation apparatus with help function
Patent #: 4992947
Issued on: 02/12/1991
Inventor: Nimura, ;, , , --> Nimura, et al.
Vehicle navigation device with reproduction of a selected map element according to a predetermined representation standard
Patent #: 4996645
Issued on: 02/26/1991
Inventor: Schneyderberg Van Der Zon
Location detecting method
Patent #: 4999783
Issued on: 03/12/1991
Inventor: Tenmoku, et al.
Method and system to determine the position of a land vehicle during movement over a predetermined path
Patent #: 5040122
Issued on: 08/13/1991
Inventor: Neukirchner, ;, -, , --> Neukirchner, et al.
Apparatus for navigating vehicle
Patent #: 5046011
Issued on: 09/03/1991
Inventor: Kakihara, et al.
Vehicle in-situ locating apparatus
Patent #: 5060162
Issued on: 10/22/1991
Inventor: Ueyama, et al.
Automobile navigation system using real time spoken driving instructions
Patent #: 5177685
Issued on: 01/05/1993
Inventor: Davis, et al.
Vehicle route planning system
Patent #: 5184303
Issued on: 02/02/1993
Inventor: Link
Land vehicle navigation apparatus with visual display
Patent #: 5243528
Issued on: 09/07/1993
Inventor: Lefebvre
Vehicle-direction measuring apparatus
Patent #: 5283743
Issued on: 02/01/1994
Inventor: Odagawa
Magnetic direction finder with correcting circuit
Patent #: 5287297
Issued on: 02/15/1994
Inventor: Ihara, et al.
5291412
Navigation system for guiding a vehicle along a precomputed optimal route
Patent #: 5291413
Issued on: 03/01/1994
Inventor: Tamai, et al.
Direction sensor having an earth magnetism sensor and a rate gyro sensor and navigation system having this direction sensor
Patent #: 5297050
Issued on: 03/22/1994
Inventor: Ichimura, et al.
Vehicle navigation system
Patent #: 5311434
Issued on: 05/10/1994
Inventor: Tamai
Vehicle navigation system for evaluating a return route based on cost
Patent #: 5689423
Issued on: 11/18/1997
Inventor: Sawada
Navigation system having optimal destination route setting capability
Patent #: 5752217
Issued on: 05/12/1998
Inventor: Ishizaki, et al.
Vehicle navigation apparatus with route modification by setting detour point Patent #: 5787383
Issued on: 07/28/1998
Inventor: Moroto, et al.