JP2010043937A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system capable of assisting users to pass through an interchange and a junction having a complicated structure having a large number of fork roads without being lost. <P>SOLUTION: When a vehicle approaches a location at a distance of 300 m from gates of an interchange or a junction, gates of a tollgate 23 displayed on a display monitor 16 are classified by color similarly to actual gates. Roads 23a-23c to be traveled after the passage through the gates are also classified by color according to the display colors of the gates 23a-23c. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a navigation device for displaying highway interchanges and junctions.

A navigation apparatus that displays a road map in which the display color of the highway connected to the main road of the highway is different from the display color of the main road of the highway is known as a conventional technique (for example, Patent Document 1).
JP 2005-300290 A

  In the conventional navigation apparatus as described in Patent Document 1, since the structure of the highway connected to the main road of the highway is displayed so that it can be discriminated, an interchange or junction having a complicated structure with many branch roads is displayed. Then, there is a problem that the user gets lost.

(1) The navigation device according to the first aspect of the present invention provides an IC / JCT detection means for detecting an interchange or a junction, and a color coding of the gates which are painted for each destination of the interchange or junction detected by the IC / JCT detection means. It is characterized by comprising color-coded storage means for storing, and map display control means for color-displaying the road ahead from the gate exit in accordance with the color coding of the gate stored by the color-coded storage means.
(2) The invention according to claim 2 is the navigation device according to claim 1, wherein the map display control means displays the road in different colors when the vehicle approaches the interchange or junction gate, and the vehicle is a highway. When entering the main line, the color-coded display of the road is terminated.
(3) The invention according to claim 3 is the navigation device according to claim 2, wherein the map display control means displays the road in a color-coded manner from the gate to the position connecting to the main line of the expressway.
(4) The invention according to claim 4 is the navigation device according to any one of claims 1 to 3, wherein the vehicle can travel according to search means for searching for a recommended route from the current position to the destination, and the recommended route. Route guidance means for guiding in such a way that the route guidance means guides the color of the passing gate.
(5) The navigation device of the invention of claim 5 is a search means for searching for a recommended route from the current position to the destination, a map display control means for displaying a road map on a display monitor, and a current position detection for detecting the current position of the vehicle. IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the means, the current position detection means, and the destination of the interchange or junction detected by the IC / JCT detection means. The map display control means displays an enlarged view of the branch point at the gate when the vehicle approaches the gate, and the branch ahead of the branch point displayed in the enlarged view. Among the roads, the display color of the branch road on the recommended route is color-coded for the gate stored by the color-coded storage means Characterized in that match.
(6) The invention of claim 6 is the navigation device according to claim 5, wherein the map display control means has a width of the branch path on the recommended path among the branch paths ahead of the branch point displayed in the enlarged view. Is made wider than other branch paths.
(7) The navigation device of the invention of claim 7 is a search means for searching for a recommended route from the current position to the destination, a map display control means for displaying a road map on a display monitor, and a current position detection for detecting the current position of the vehicle. IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the means, the current position detection means, and the destination of the interchange or junction detected by the IC / JCT detection means. The map display control means displays an enlarged view of the branch point at the gate when the vehicle approaches the gate, and displays the recommended route display color displayed in the enlarged view. , According to the color coding of the gate stored by the color coding storage means.
(8) The navigation device of the invention of claim 8 is a search means for searching for a recommended route from the current position to the destination, a map display control means for displaying a road map on a display monitor, and a current position detection for detecting the current position of the vehicle. IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the means, the current position detection means, and the destination of the interchange or junction detected by the IC / JCT detection means. Color map storage means for storing the color code of the gate, and the map display control means matches the display color of the recommended route on the road map with the color code of the gate stored by the color code storage means.
(9) The navigation device of the invention of claim 9 is a search means for searching for a recommended route from the current position to the destination, a map display control means for displaying a road map on a display monitor, and a current position detection for detecting the current position of the vehicle. IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the means, the current position detection means, and the destination of the interchange or junction detected by the IC / JCT detection means. Color map storage means for storing the color coding of the gate, and the map display control means displays on the road displayed as the recommended route a point sequence of colors according to the color coding of the gate stored by the color coding storage means In addition, the color point corresponding to the gate color code stored by the color code storage means is on the road. As it appears to move, and displaying by blinking the point sequence.

  According to the present invention, in an interchange or junction where the toll gate is color-coded in the road map displayed on the display monitor, the display color of the approach road from the gate exit to the main line ahead is changed to the color of the gate. I tried to match. Therefore, the user can pass through interchanges and junctions having a complicated structure with many branches without hesitation.

  FIG. 1 shows a navigation device 1 according to an embodiment of the present invention. The navigation apparatus 1 makes it possible to identify toll gates and expressways displayed on a road map by display colors. The navigation device 1 includes a control circuit 11, ROM 12, RAM 13, current location detection device 14, image memory 15, display monitor 16, speaker 17, input device 18, and disk drive 19. The disc drive 19 is loaded with a DVD-ROM 110 in which map data is stored.

  The control circuit 11 includes a microprocessor and its peripheral circuits, and performs various controls by executing a control program stored in the ROM 12 using the RAM 13 as a work area. The control circuit 11 performs a predetermined route search process based on the map data stored in the DVD-ROM 110. Then, the processing result is displayed on the display monitor 16 as a recommended route.

  The current location detection device 14 is a device that detects the current location of the vehicle. The current location detection device 14 includes a vibration gyro 14a, a vehicle speed sensor 14b, a GPS (Global Positioning System) sensor 14c, and the like. The vibration gyro 14a detects the traveling direction of the vehicle, the vehicle speed sensor 14b detects the vehicle speed, and the GPS sensor 14c detects a GPS signal from a GPS satellite. The navigation device 1 determines a map display range, a route search start point, and the like based on the current location of the vehicle detected by the current location detection device 14. Further, the current location of the vehicle detected by the current location detection device 14 is displayed on the map as the vehicle position mark.

  The image memory 15 stores image data to be displayed on the display monitor 16. The image data includes road map drawing data and various graphic data, which are appropriately generated by the control circuit 11 based on the map data stored in the DVD-ROM 110.

  The disk drive 19 reads map data from the DVD-ROM 110. The map data includes map display data, route search data, interchange / junction data, and the like. The map display data and the route search data include road link information and node information stored in the map data. The map display data has map data of a plurality of scales from wide areas to details, and the scale of the display map can be changed according to a user request. The map data may be read from a recording medium other than the DVD-ROM 110, such as a CD-ROM or a hard disk.

  With reference to FIG. 2, interchange / junction data (hereinafter, IC / JCT data) in which information on interchanges and junctions is stored will be described. The IC / JCT data includes IC / JCT name, IC / JCT location, number of toll booths, and toll gate ID for each IC / JCT-ID for identifying interchanges and junctions. The IC / JCT name is information on the name of the interchange or junction. The IC / JCT position is information on the position (latitude / longitude) of an interchange or junction. The number of toll booths is information on the number of toll booths installed at the interchange or junction. The toll gate ID is information of an identification symbol that identifies a toll gate installed at an interchange or junction. Furthermore, for each toll gate ID, information on the toll gate location, the number of colors when the gate is color-coded, and information on the destination direction of the road connected to the gate are included for each color.

  The display monitor 16 provides the user with various information such as a road map near the vehicle position as a screen display based on various information such as map data. The speaker 17 outputs sound for instructing the user to perform various input operations and for guiding the route. The input device 18 has operation keys that are operated by a user for setting various commands, and is realized by a button switch on the operation panel, a hard switch around the panel, or the like. The user sets the destination by operating the input device 18 in accordance with an instruction on the display screen of the display monitor 16 or a voice instruction from the speaker 17.

  When the destination is set by the user, a route search end point is set at the destination. Then, route calculation from the route search start point to the route search end point is performed based on a predetermined algorithm using the route search data. The route thus obtained (hereinafter referred to as a recommended route) is displayed on the screen in a manner different from other roads by changing the display form, for example, the display color. Thereby, the user can recognize the recommended route on the road map on the screen. In addition, the navigation device 1 provides a route guidance for the vehicle by instructing the user in the direction of travel using a screen or voice so that the vehicle can travel according to the recommended route.

  Next, road display according to an embodiment of the present invention will be described with reference to FIGS. FIG. 3A is a diagram for explaining a display screen of the display monitor 16 of the vehicle that is 300 m or more away from the interchange or junction toll booth. On the display screen of the display monitor 16, a road map 20 around the vehicle position is displayed, and a vehicle position mark 21, a recommended route 22, and a toll gate 23 are displayed. In the toll booth 23, a symbol 23a represents a gate toward the Kobe / Osaka direction, a symbol 23b represents a gate toward the general road exit, and a symbol 23c represents a gate toward the Himeji direction. The recommended route 22 will be described below on the assumption that it is a route that passes through the gate 23a and heads for Kobe and Osaka.

  Of the actual gates at the toll booth 23, the gates going to Kobe / Osaka are colored yellow, the gate going to the general road exit is colored blue, and the gate going to Himeji is colored red. However, the toll booth 23 on the road map 20 is displayed in a single color without being color-coded.

  FIG. 3B is a diagram for explaining a display screen of the display monitor 16 when the vehicle approaches a distance of less than 300 m from the gate of the interchange or junction. The gate of the toll booth 23 on the display screen of the display monitor 16 is displayed by being color-coded in the same manner as the actual gate. That is, the gate 23a heading toward Kobe / Osaka is colored yellow, the gate 23b heading toward the general road exit is colored blue, and the gate 23c heading toward Himeji is colored red.

  In accordance with the display colors of the gates 23a to 23c, the roads 24a to 24c entering through the gates are also color-coded. That is, the road 24a toward the Kobe / Osaka direction is colored in yellow, which is the same display color as the gate 23a toward the Kobe / Osaka direction. The road 24b going to the general road exit is color-coded in blue, which is the same display color as the gate 23b going to the general road exit. The road 24c heading toward Himeji is colored in red, the same display color as the gate 23c heading toward Himeji.

  When the vehicle approaches a distance of less than 300 m from the interchange or junction gate, the route guidance 25 is performed by voice. At this time, the route guidance 25 “right direction, Kobe / Osaka” is performed so that the user can follow the recommended route 22. Further, in order to allow the vehicle to pass through an appropriate gate 23a, the route guidance 25 is given to instruct the color of the passing gate, "Please proceed with the yellow gate."

  When the vehicle passes through the toll booth 23, as shown in FIG. 4, the color coding of the gate and road on the display screen ends, and the display screen returns to the original display.

  Next, the road display processing in the embodiment of the present invention will be described with reference to the flowchart of FIG. The processing of FIG. 5 is executed in the control circuit 11 by a program that starts when route guidance is started.

  In step S501, the current location of the vehicle is detected using the current location detection device 14. In step S502, the current location of the vehicle is collated with the toll gate (gate) position of the IC / JCT data shown in FIG. 2 to detect the interchange or junction where the vehicle enters, and the vehicle approaches 500 meters before the gate of the interchange or junction. Determine whether or not. If the vehicle has approached 500 meters before the interchange or junction gate, an affirmative determination is made in step S502 and the process proceeds to step S503. If the vehicle has not approached 500 meters before the interchange or junction gate, a negative determination is made in step S502, and the process returns to step S501.

  In step S503, referring to the number of colors in the IC / JCT data in FIG. 2, it is determined whether or not the gate of the toll gate to which the vehicle approaches is color-coded. If the toll gate where the vehicle approaches is color-coded, an affirmative determination is made in step S503, and the process proceeds to step S504. If the toll gate where the vehicle approaches is not color-coded, a negative determination is made in step S503, and the process ends. In step S504, a color for color-coding the road is specified from the display color information of the gate of the IC / JCT data.

  In step S505, the current location detection device 14 is used to detect the current location of the vehicle. In step S506, it is determined whether or not the vehicle has approached 300 meters before the interchange or junction gate. If the vehicle has approached 300 meters before the interchange or junction gate, an affirmative decision is made in step S506 and the operation proceeds to step S507. If the vehicle has not approached 300 meters before the interchange or junction gate, a negative determination is made in step S506, and the process returns to step S505.

  In step S507, the gate and road are color-coded with reference to the information on the destination direction of the road connected to the gate of the IC / JCT data in FIG. In step S508, route guidance including an instruction of the color of the gate that passes is performed. Route guidance is performed by voice output from the speaker 17.

  In step S509, the current location of the vehicle is detected using the current location detection device 14. In step S510, it is determined whether the vehicle has passed an interchange or junction toll gate. If the vehicle has passed the interchange or junction toll booth, an affirmative decision is made in step S510 and the operation proceeds to step S511. If the vehicle has not passed through the interchange or junction toll booth, a negative determination is made in step S510, and the process returns to step S509. In step S511, the color-coded tollgate and road are returned to the original display. Then, the process ends.

The navigation device 1 according to the above embodiment has the following operational effects.
(1) In the road map displayed on the display monitor 16, in the interchange or junction where the gate of the toll gate is color-coded, the display color of the road entering from the gate is matched with the color of the gate. Therefore, the user can pass through interchanges and junctions having a complicated structure with many branch paths without hesitation by passing through the gate having the same display color as the road on the recommended route.

(2) The route guidance including the instruction of the color of the passing gate is performed. Therefore, the user can pass through interchanges and junctions of complicated structures with many branch paths without hesitation by passing through the route-guided color gate.

The navigation apparatus 1 of the above embodiment can be modified as follows.
(1) As shown in FIG. 6A, when the vehicle approaches 300 m before the gate of the interchange or junction, an enlarged view 30 of the branch point at the interchange or junction may be displayed. In this enlarged view 30, the display color of the branch path 32 that is the recommended path 22 from the position 31 corresponding to the toll gate that is the branch point is changed to the actual display color of the gate 23a that passes when entering the branch path. Try to match. As a result, the user can pass through interchanges and junctions with a complicated structure with many branch paths without hesitation by passing through the gate having the same display color as that of the branch path 32 on the recommended path in the enlarged view 30. Further, in this enlarged view 30, the branch point at the interchange or junction is deformed and displayed, and the structure of the interchange or junction is easily understood.

  Furthermore, as shown in FIG. 6B, the road width of the branch road 32 through which the recommended route 22 in the enlarged view 30 passes may be made wider than other branch roads. Accordingly, the user can pass through interchanges and junctions having a complicated structure with many branch paths without hesitation by passing through the gate having the same display color as that of the wide branch path 32 in the enlarged view 30.

(2) As shown in FIG. 7A, when the vehicle approaches 300 m before the gate of the interchange or junction, an enlarged view 40 of the branch point at the interchange or junction may be displayed. In this enlarged view 40, the display color of the recommended route 22 in the figure is matched with the actual display color of the gate 23a through which the recommended route 22 passes. Accordingly, the user can pass through interchanges and junctions having a complicated structure with many branch paths without hesitation by passing through the gate having the same display color as that of the recommended route 22 in the enlarged view 40.

  Further, as shown in FIG. 7B, the display color of the recommended route 22 displayed on the road map 20 around the vehicle position is also matched with the actual display color of the gate 23a through which the recommended route 22 passes. May be. Thereby, the user can pass through interchanges and junctions of complicated structures with many branch paths without hesitation by passing through the gate of the same display color as that of the recommended route 22. Further, the display color of the recommended route 22 may be matched with the actual display color of the gate 23a through which the recommended route 22 passes without displaying the enlarged view 40.

(3) As shown in FIG. 8, on the road on the recommended route 22, point sequences 81a to 81g that match the actual display color of the gate 23a through which the recommended route 22 passes are displayed, and each point of the point sequence is displayed. You may make it blink. At this time, each of the points 81a to 81g is blinked at such a timing that the point matched with the actual display color of the gate 23a through which the recommended route 22 passes moves in the direction of the arrow 82. As a result, the user can pass through interchanges and junctions having a complicated structure with many branch paths without hesitation by passing through the gate having the same display color as that of the dot sequences 81a to 81g displayed in blinking.

(4) When the vehicle passes the interchange or junction toll booth, the color-coded gates and roads are restored to the original display, but when the vehicle enters the main road of the expressway, the color-coded gates and roads are restored to the original display. You may make it return to. Thereby, it is possible to confirm whether or not the vehicle is traveling in the correct direction by referring to the display color of the road until the vehicle enters the main road of the expressway. Further, in this case, as shown in FIG. 9, it may be color-coded by the color of the gate of the toll gate up to the position where the main road 91 and the road 24a are connected. Thereby, it is possible to clearly recognize a position where the main road 91 of the highway and the road 24a are connected, which is a point that requires attention to driving.

  The above description is merely an example, and the present invention is not limited to the above embodiment.

The correspondence between the elements of the claims and the embodiments will be described.
The map display control means of the present invention corresponds to the control circuit 11, and the current location detection means corresponds to the current location detection device 14. The IC / JCT detection means and the color-coded storage means correspond to the control circuit 11, the disk drive 19 and the DVD-ROM 110, the search means corresponds to the control circuit 11, and the route guidance means corresponds to the control circuit 11 and the speaker 17. In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

It is a block diagram which shows the structure of the navigation apparatus of embodiment of this invention. It is a figure for demonstrating interchange / junction data. It is a figure for demonstrating the color coding of the road according to the color of the gate of a toll gate. It is a figure for demonstrating the timing which returns the display of the road color-coded according to the color of the gate of a toll gate to the original display. It is a flowchart for demonstrating the road display process in embodiment of this invention. It is a figure for demonstrating the enlarged view of the branch point which color-divided the branch path where a vehicle advances according to the color of the gate of a toll gate. It is a figure for demonstrating the enlarged view of the branch point which divided the road on a recommended route according to the color of the gate of a toll gate. It is a figure for demonstrating blinking of the point sequence according to the color of the gate of a toll gate. It is a figure for demonstrating the color-coded range of the road color-coded according to the color of the gate of a toll gate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 11 Control circuit 16 Display monitor 17 Speaker 21 Own vehicle position mark 22 Recommended route 23 Toll gates 23a-23c Toll gates 24a-24c Road

Claims (9)

IC / JCT detection means for detecting an interchange or a junction;
A color-coded storage means for storing the color-coded gates for each destination of the interchange or junction detected by the IC / JCT detection means;
A navigation apparatus comprising map display control means for color-displaying a road ahead from the gate exit according to the color coding of the gate stored by the color-coding storage means. The navigation device according to claim 1, wherein
The map display control means displays the road color-coded when the vehicle approaches an interchange or junction gate, and ends the color-coded display of the road when the vehicle enters an expressway main line. A navigation device characterized by the above. The navigation device according to claim 2, wherein
The navigation apparatus according to claim 1, wherein the map display control means displays the road in a color-coded manner from the gate to a position connecting to the main road of the expressway. The navigation device according to any one of claims 1 to 3,
A search means for searching for a recommended route from the current location to the destination;
Route guidance means for guiding the vehicle to travel according to the recommended route,
The route guidance means guides the color of a passing gate. A search means for searching for a recommended route from the current location to the destination;
Map display control means for displaying a road map on a display monitor;
Current location detection means for detecting the current location of the vehicle;
IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the current position detection means;
Color-coded storage means for storing the color coding of the gates painted for each destination of the interchange or junction detected by the IC / JCT detection means,
When the vehicle approaches the gate, the map display control means displays an enlarged view of the branch point at the gate, and on the recommended route among the branch roads ahead of the branch point displayed in the enlarged view. A navigation apparatus characterized in that the display color of the branch path is matched with the color classification of the gate stored by the color classification storage means. The navigation device according to claim 5, wherein
The map display control means widens the width of the branch path on the recommended path among branch paths ahead of the branch point displayed in the enlarged view as compared with other branch paths. apparatus. A search means for searching for a recommended route from the current location to the destination;
Map display control means for displaying a road map on a display monitor;
Current location detection means for detecting the current location of the vehicle;
IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the current position detection means;
Color-coded storage means for storing the color coding of the gates painted for each destination of the interchange or junction detected by the IC / JCT detection means,
The map display control means displays an enlarged view of a branch point at the gate when the vehicle approaches the gate, and the display color of the recommended route displayed in the enlarged view is stored in the color-coded storage means. A navigation device characterized by matching the color of the gate. A search means for searching for a recommended route from the current location to the destination;
Map display control means for displaying a road map on a display monitor;
Current location detection means for detecting the current location of the vehicle;
IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the current position detection means;
Color-coded storage means for storing the color coding of the gates painted for each destination of the interchange or junction detected by the IC / JCT detection means,
The navigation apparatus characterized in that the map display control means matches the display color of the recommended route on the road map with the color classification of the gate stored by the color classification storage means. A search means for searching for a recommended route from the current location to the destination;
Map display control means for displaying a road map on a display monitor;
Current location detection means for detecting the current location of the vehicle;
IC / JCT detection means for detecting an interchange or junction that the vehicle enters based on the current position detected by the current position detection means;
Color-coded storage means for storing the color coding of the gates painted for each destination of the interchange or junction detected by the IC / JCT detection means,
The map display control means displays on the road displayed as the recommended route a point sequence of colors according to the color coding of the gate stored by the color-coded storage means, and the gate stored by the color-coded storage means A navigation device characterized in that the point sequence blinks and is displayed so that a point of a color according to the color classification of the point can be seen moving on the road.

Images