U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Navigation apparatus

Patent 4939662 Issued on July 3, 1990. Estimated Expiration Date: Icon_subject July 11, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Navigational information announcing system for motor vehicle
Patent #: 4291373
Issued on: 09/22/1981
Inventor: Mizote ,   et al.

Geographic display device for a moving vehicle
Patent #: 4490717
Issued on: 12/25/1984
Inventor: Saito

Audio/visual display system for multiple maps
Patent #: 4630209
Issued on: 12/16/1986
Inventor: Saito ,   et al.

Navigation system with capability of instructing running direction
Patent #: 4679147
Issued on: 07/07/1987
Inventor: Tsujii ,   et al.

Navigator for use aboard a vehicle
Patent #: 4688176
Issued on: 08/18/1987
Inventor: Hirata

Navigation system for automotive vehicle including feature of updating vehicle position at every intersection along preset course
Patent #: 4774671
Issued on: 09/27/1988
Inventor: Itoh ,   et al.

Vehicle running guide system Patent #: 4812845
Issued on: 03/14/1989
Inventor: Yamada ,   et al.

Inventors

Assignee

Application

No. 217531 filed on 07/11/1988

US Classes:

701/211, Having audio or visual route guidance340/990, With map display340/995.2Intersection turn guidance

Examiners

Primary: Chin, Gary

Attorney, Agent or Firm

International Class

G06F 015/50

Foreign Application Priority Data

1987-10-07 JP

Abstract

A navigation apparatus for navigating a vehicle in accordance with a preset course while measuring distance travelled and steering angle is characterized by presetting distance information for guidance along the course, and outputting guidance relating to the pertinent distance information in the form of travelling conditions corresponding to the preset distance information. Distance information for guiding a driver along the course is preset. Therefore, even if it is a long distance to an intersection at which the next turn is to be made, whenever the vehicle has traveled a fixed distance the driver is unfailingly supplied with distance information relating to the intersection at which the next turn is to be made and with distance information relating to distinguishing features seen along the course, such as facilities and scenery, during the time the vehicle is travelling between the intersections. Thus, if a long distance must be travelled to reach the intersection at which the next turn is to be made, the driver is frequently supplied with guidance relating to distance information while traveling. This makes it possible for the driver to verify the course and assures that the driver can drive the vehicle at ease without requiring that he be aware of the distance to the intersection at which the next turn is to be made.

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