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Navigation device and describing method of cross point indication map

A technology of navigation device and intersection, applied in directions such as navigation, measurement device, surveying and navigation, etc., can solve the problems that users are difficult to grasp, cannot determine the exit, and cannot be identified by users.

Inactive Publication Date: 2008-03-12
ALPINE ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the user cannot recognize that it is a roundabout and cannot determine the exit.
In view of the above situation, although a part of the map image is enlarged and displayed in the above-mentioned Patent Document 1, it is difficult for the user to grasp where the user is driving in the roundabout.

Method used

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  • Navigation device and describing method of cross point indication map
  • Navigation device and describing method of cross point indication map
  • Navigation device and describing method of cross point indication map

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0026] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a navigation device 10 according to the first embodiment. In FIG. 1 , 11 is a map recording medium such as a DVD-ROM, which stores various map data necessary for map display and route search. In addition, here, the DVD-ROM 11 is used as the recording medium storing the map data, but other recording media such as CD-ROM, hard disk, and semiconductor memory may also be used. 12 is a DVD-ROM control unit which controls reading of map data from the DVD-ROM 11 .

[0027] Here, the map data recorded on the DVD-ROM 11 will be described in detail. The map data recorded in the DVD-ROM 11 includes road data necessary for various processing such as map display and route search. Road data, including information about nodes corresponding to points where multiple roads intersect, such as intersections or fork roads;...

no. 2 Embodiment approach

[0067] Next, a second embodiment of the present invention will be described based on the drawings. The configuration of the navigation device 10 according to the second embodiment is the same as the block diagram shown in FIG. 1 . In the second embodiment, the function of the guidance route generation unit 24 is different from that in the first embodiment. However, the configuration of the main parts is the same as that of the functional block diagram shown in FIG. 2 , and thus will be described using the same reference numerals.

[0068] The guidance route generation unit 24 (corresponding to the drawing unit of the present invention) of the second embodiment draws and represents the inside of the roundabout based on the map data read from the map information memory 14 and the guidance route data read from the guidance route memory 20. An itinerary guide for trips to various fork locations in place of a zoomed-in map. In addition, the guide route generating unit 24 may disp...

no. 3 Embodiment approach

[0075] Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a block diagram showing a configuration example of a navigation device 40 according to the third embodiment. As shown in FIG. 8 , the configuration of the navigation device 40 of the third embodiment includes an enlarged intersection image memory 28 (corresponding to the enlarged image data storage unit of the present invention) in addition to the configuration of the first embodiment. In addition, in the third embodiment, the function of the guidance route generating unit 41 (corresponding to the drawing unit of the present invention) is different from that in the first embodiment. FIG. 9 is a functional block diagram showing a configuration example of main parts of the third embodiment. In FIGS. 8 and 9 , components having the same functions as those shown in FIGS. 1 and 2 are assigned the same reference numerals.

[0076] In FIG. 8 , the enlarged intersecti...

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Abstract

The present invention provides a navigation device and a method for portraying the intersection guiding picture, which can portray the guiding picture that is easy to see for the driver when the guiding picture of the larger rotary island is displayed. When the picture displays the intersection enlarged picture to do intersection guiding, and the guided intersection is judged to be a rotary island by the intersection judging part (31) and the rotary island is judged above the defined dimension by the dimension judging part (32), the path generating part (24) is guided to cause that the picture is displayed with double-picture and the map image is portrayed with dimension scale that the total of the rotary island is included in the picture display area; and the partial enlarged picture is deformedly portrayed at the other picture. Thereby, the user can hold the position himself in the whole rotary island, besides, the partial enlarged picture where even the huge rotary island is not deformed can be portrayed and the advancing direction at the intersection can be held.

Description

technical field [0001] The invention relates to a navigation device and a drawing method of an intersection guide map, and is especially suitable for a navigation device that displays an enlarged view of the intersection when entering a guide intersection for guidance. Background technique [0002] Generally, in-vehicle navigation devices use autonomous navigation sensors or GPS (Global Positioning System: Global Positioning System) receivers to detect the current position of the vehicle, read map information in the vicinity from a recording medium, and display it on the screen. In addition, a vehicle position mark showing the position of the vehicle is superimposed and displayed at a predetermined position on the screen, thereby making it clear at a glance where the vehicle is currently traveling. [0003] In addition, many navigation devices are equipped with a route guidance function. In this route guidance function, the route with the lowest cost connecting the current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/26G01C21/34G01C21/36G09B29/10G01S5/14G08G1/0969G09B29/00
Inventor 东宪司渡边祐子
Owner ALPINE ELECTRONICS INC
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