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Vehicle-mounted navigation system

A vehicle navigation and vehicle technology, applied in the field of vehicle navigation systems

Inactive Publication Date: 2014-04-16
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are deficiencies in the point of view of the safety of the driver driving the vehicle and at what timing is more suitable for route guidance, and there is no consideration as to which timing is more effective for route guidance.

Method used

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Experimental program
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Embodiment Construction

[0030] Next, an embodiment of the present invention will be described with reference to the drawings. figure 1 The configuration of the car navigation system 2 of this embodiment is schematically shown. The car navigation system 2 is mounted on the vehicle 1 (refer to figure 2 ).

[0031] The car navigation system 2 is configured mainly by a computer (CPU) and includes a control device 3 for overall control. And also equipped with a communication device 5, which is connected to the control device 3, and performs wireless communication with an external information communication center 4, etc.; a position detection part 6, which is used as a vehicle position detection part for detecting the position of the vehicle; a display device 7 , function as a display unit composed of a full-color liquid crystal display; an operation switch group 8, which includes a touch panel and a mechanical switch; a sound output device 9, which outputs a synthesized sound from a speaker;

[0032] F...

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PUM

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Abstract

The invention provides a vehicle-mounted navigation system. When a control unit (3) of the vehicle-mounted navigation system is performing the route guide, if a vehicle reaches a cross point portion or a branch point portion which guides left / right turning or branches, a road sign which is arranged on a pedestrian crosswalk at the cross point portion or the branch point portion is detected from road images shot by a camera (11), and whether the vehicle has already crossed the pedestrian crosswalk is judged according to the relative movement of the images of the pedestrian crosswalk. The control unit (3) determines that the vehicle has already turned left / right or is already running on a branch road, and then provides subsequent necessary voice guide. In this way, whether the vehicle has already turned left / right at the cross point or is already running on a branch road can be accurately judged, and necessary guide is provided at the proper time.

Description

technical field [0001] The present invention relates to an on-vehicle navigation system, which includes a vehicle position detection unit for detecting the position of the vehicle and a route guidance unit for guiding a recommended route to a designated destination. Background technique [0002] The car navigation system mounted on the car has: a positioning function, which is used to detect the current position of the vehicle, which is superimposed on the display device and displayed on the road map; and a route guidance function, which is used to search for the destination specified by the user through calculation. The recommended path, guide that path. At this time, in order to realize the positioning function, based on the information of the absolute position of the own vehicle of the GPS, and the relative position judgment of the moving distance and the moving direction of the own vehicle obtained by the gyro sensor and the vehicle speed sensor, for the road where the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/26G01C21/34
Inventor 铃木孝光
Owner DENSO CORP