Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Navigation and GPS

Apparatus-for-generating-road-information-from-stored-digital-map-database

Vehicle communication system and method for vehicles capable of automatic storing of vehicle identification code

It is therefore an object of the invention to provide a communication system for a vehicle, in ...

Vehicle proximity-alerting device

Applicants proximity-alerting device is designed to accommodate a wide range of applications. For ...

Vehicle active drive assist device and vehicle provided with the same

In view of the foregoing, the present invention has been devised, and it is an object of the ...

Flight management computer lateral route recapture

The following detailed description is merely exemplary in nature and is not intended to limit the ...

Aircraft center of gravity and fuel level advisory system

The subject center of gravity and fuel level advisory system displays in real time the aircraft's ...

Process and system for determining the longitudinal position of the center of gravity of an aircraft provided with an adjustable horizontal stabilizer and application to the monitoring of said center of gravity near the focus of the aircraft

The object of the present invention is a reliable and precise process for determining the ...

Method and apparatus for real time estimation of aircraft center of gravity

FIG. 1 is a block diagram that illustrates a center of gravity estimator (generally denoted by ...

Method and apparatus for the linear real time estimation of an aircraft center of gravity

The present invention provides an improved method and apparatus for estimating the position of an ...

Wire management system

The inventor of the present invention has recognized these and other problems and has developed a ...

Remote access of an airport airfield lighting system

The present invention disclosed and claimed herein, in one aspect thereof, comprises remote monitor ...

Apparatus for generating road information from stored digital map database

Details

Inventors: Satoh, Yoshihiro; Saito, Hiroshi;
Assignee: Nissan Motor Co., Ltd. (Yokohama, JP)
Primary Examiner: Louis-Jacques; Jacques H.
Assistant Examiner: To; Tuan C
Attorney, Agent or Firm: Foley & Lardner

A road information generating apparatus has a stored digitized map database having data identifying roads on a route. The roads of the map database are stored as road segments each having endpoints. The apparatus cancels data defining selected road segments that fall outside of a predetermined window about a predetermined circle approximating a predetermined road curve. The apparatus determines circles each approximating a portion of unselected road segments. The apparatus compares a radius of each of the circles with a predetermined radius value. The apparatus produces road information on acute curve in response to result of comparing the radius of each curve with the predetermined radius value.

DETAILED DESCRIPTION Accordingly, a need remains to improve the known technique in movement toward versatile apparatus for generating road information ahead a vehicle.
An object of the present invention is to improve versatility of an apparatus for generating road information ahead of a vehicle.
According to one aspect of the present invention, there is provided an apparatus for generating road information on a route over which a vehicle may move, the apparatus comprising: a stored map database having data identifying roads on the route, said roads of said stored map database being stored as road segments each having endpoints; and an application unit to implement a circular arc approximation type logic, which, when rendered operable, cancels data defining selected road segments that fall outside of a predetermined window about a predetermined circle approximating a predetermined road curve, determines circles, each approximating a portion of non-selected road segments, compares a radius of each of said circles with a predetermined radius value, and produces road information on acute curve in response to result of said comparing the radius of each of said curves with said predetermined radius value.

Related patents

	Heading and position error-correction method and apparatus for vehicle navigation systems The present invention provides methods and devices that enable correction of gyroscope bias and gyroscope bias drift in low-cost, vehicular navigation and positioning ...
	Magnetic wheel sensor for vehicle navigation system According to the present invention, an ACUTRAK system is implemented in part using a wheel sensor in the form of Hall effect magnetic rotation system. A floated compass ...
	Method and system for compensating for wheel wear on a train The present invention meets the aforementioned need to a great extent by providing a method and system for compensating for wheel wear in which wheel rotation ...
	Charging control system for moving robot system Accordingly, it is an object of the present invention to provide a charging control system by which the charging operations of the robots can be carried out efficiently. ...
	Multi-functional robot with remote and video system The present invention is a multi-function robot. The robot can operate autonomously or be manipulated remotely by a remote control device. To interact with people in a ...
	System, method, and program for robot control What is claimed is: 1. A robot control system for controlling a robot of which motions can be varied by replacement of control software, the robot control system ...
	Collision and theft alert system In view of the foregoing disadvantages inherent in the known types of warning systems of known designs and configurations now present in the prior art, the present ...
	Diagnostic system for a motor vehicle OF THE PREFERRED EMBODIMENT Referring to FIG. 1, an automobile 1 is equipped with an electronic control system S comprising an electronic control unit 2, a plurality of ...
	Battery management system for electric vehicle With these problems, therefore, there is the object of the present invention to provide a battery management system for an electric vehicle, which can monitor the ...
	Power supplying apparatus for vehicle and intensive wiring apparatus What is claimed is: 1. A power supply apparatus for a vehicle, comprising: an electric power line comprising a plurality of sequentially connected segments wired in an ...

0.004
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved