JP2006170950A - Navigation apparatus, and destination candidate display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation apparatus and a destination candidate display method capable of comparing visually and easily a plurality of fellow destination candidates, for example, distance comparison, arrival time comparison or the like, when determining a destination. <P>SOLUTION: In this destination candidate display method in the navigation apparatus, the navigation apparatus searches a POI of a set genre existing within a prescribed area, when the genre of the destination is set. Then, a distance up to the each POI is calculated, the longest distance out of the respective distances is made to serve as a prescribed length on a screen, and a distance up to the other POI is converted into a straight length on the screen, using the length as a reference. At last, a straight line of a length in response to the distance up to the each POI is displayed along each POI direction, and a POI mark and a POI name are displayed in the vicinity of a straight line tip part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device and a destination candidate display method, and more particularly to a navigation device and a destination candidate display method for displaying the distance or arrival time and direction to each destination candidate so as to be easily grasped.

An example of displaying a plurality of destination candidates in a navigation device is a peripheral facility search function. If you want to go to a shop or facility such as a gas station, restaurant, bank, etc. around your vehicle position, enter the peripheral facility search mode. For example, if you enter a restaurant, the navigation device searches for a restaurant within a predetermined distance from your vehicle position. As shown in FIG. 10, the name of each restaurant, the distance to the restaurant, and the direction arrow indicating the direction of the restaurant are displayed as a list (table list display).
However, in such a table list display, since the distance is displayed in characters, the user must read the distance, and there is a problem that it is difficult to instantly grasp the magnitude and direction of the distance to a plurality of destination candidates.
Further, as a conventional technique, there is one that can recognize the positional relationship between a peripheral facility and a search starting point (own vehicle position) at a glance (see Patent Document 1). In this prior art, a mark indicating a facility of a predetermined genre searched for in the peripheral facility search is displayed superimposed on the location on the map of the screen.
JP-A-9-292262

According to the above prior art, the positional relationship between the surrounding facilities and the search starting point (vehicle position) can be easily recognized, but each destination candidate is only displayed on the map with a landmark or the like. There is a problem that it is difficult to compare destination candidates when determining the distance, for example, it is difficult to determine the size of the distance to each peripheral facility (destination candidate).
Accordingly, an object of the present invention is to make it easy to visually compare a plurality of candidates when determining a destination, for example, distance comparison, arrival time comparison, and the like.
Another object of the present invention is to make it easy to visually determine the road type to the candidate site and the ratio of the road length for each road type.

The present invention relates to a navigation device that searches for and displays a route to a destination, and a destination candidate display method in the navigation device.
In the first destination candidate display method, a genre of a destination is set, and a POI (Point Of Interest: a point of interest, specifically, various facilities, stores, etc.) of the set genre is set. The POI existing in the area is searched, the distance to each POI is calculated, the maximum distance among the distances is set as a predetermined length on the screen, and the distances to other POIs on the screen are determined based on the length. The line is converted into a straight line length, a straight line having the length corresponding to the distance to each POI is displayed in each POI direction, and a POI mark and a POI name are displayed in the vicinity of the straight line end. In this case, the distance for each road type to the POI is obtained and converted to a straight line length on the screen, and a straight line is displayed so that the road type can be identified.
In the second destination candidate display method, the genre of the destination is set, the POI of the set genre is searched for a POI existing in a predetermined area, the arrival time to each POI is calculated, Of the arrival times, the maximum arrival time is defined as a predetermined length on the screen, and the arrival time to another POI is converted to a straight line length on the screen based on the length, and the arrival time to each POI in each POI direction. A straight line having the corresponding length is displayed, and a POI mark and a POI name are displayed near the tip of the straight line.

The first navigation device displays a setting unit for setting the genre of the destination in the destination search mode, a POI database for storing the name, position and genre of each POI, a map, and a plurality of destination candidates. A display unit that searches for a POI of a set genre and exists in a predetermined area, calculates a distance to each POI, and sets the maximum distance among the distances as a predetermined length on the screen, A control unit that converts the distance to other POIs on the screen with reference to the length, generates a linear image of the length corresponding to the distance to each POI in each POI direction, and near the point of the straight line A multi-destination candidate image generating unit that generates an image of a mark and a POI name is provided, and the display unit displays the multi-destination candidate in a destination search mode.
The second navigation device displays a setting unit for setting the genre of the destination in the destination search mode, a POI database for storing the name, position, and genre of each POI, a map, and a plurality of destination candidates as a graphic. A display unit to display, a POI of a set genre and searching for a POI existing in a predetermined area, calculates an arrival time to each POI, and sets the maximum arrival time among the arrival times to a predetermined length on the screen Then, a control unit that converts the arrival time to another POI on the basis of the length into a straight line length on the screen, generates a linear image of the length according to the arrival time to each POI in each POI direction, A multi-destination candidate image generating unit that generates an image of a POI mark and a POI name in the vicinity of the straight line tip is provided, and the display unit is configured to display the compound in the destination search mode. To display the destination candidates.

According to the present invention, it is possible to easily compare a plurality of candidates when determining a destination, for example, a direction and distance comparison or a direction and arrival time comparison without reading characters.
Further, according to the present invention, distance comparison or arrival time comparison can be easily performed, and the destination can be accurately determined with distance priority or arrival time priority.
Further, according to the present invention, the road type up to the candidate site and the ratio of the road length for each road type can be easily visually determined, and the destination can be determined in consideration of the road type.

  In a navigation device that searches for and displays a route to a destination, a peripheral facility search is selected when searching for a destination, and a genre of the destination is set. The navigation control unit searches the POI (Point Of Interest) of the set genre and refers to the POI existing in the predetermined area with reference to the POI database. Next, the navigation control unit calculates the distance to each POI, sets the maximum distance among the distances to a predetermined length on the screen, and converts the distance to other POIs to a straight line length on the screen based on the length. To do. The list generation unit displays a straight line having the length corresponding to the distance from the vehicle position to each POI in each POI direction, and displays a POI mark and a POI name in the vicinity of the straight line end. In this case, the distance for each road type to the POI is obtained and converted to a straight line length on the screen, and a straight line is displayed so that the road type can be identified.

FIG. 1 is a schematic explanatory diagram of the present invention. In FIG. 1A, 1 is a map displayed on the screen, 2 is a vehicle position mark, and 3a to 3c are locations of restaurants A to C which are not actually displayed but are illustrated in the description of the present invention.
In the present invention, when searching for a destination, for example, a peripheral facility search is selected and, for example, a restaurant is input as the genre of the destination. The navigation control unit searches for restaurants A, B, and C that are restaurants of the set genre and exist within a predetermined area (for example, within a predetermined distance). Next, the navigation controller 17 searches for a route RT _A to RT _C of each restaurant A, B, until C, and calculates the distance L _A to each restaurant along the route, L _B, and L _C. When the distance is calculated, the navigation control unit sets the maximum distance (= L _C ) among the distances as a predetermined length L _C ′ on the screen, and the distance to other restaurants on the screen as a straight line on the screen. The lengths are converted to L _A ′ and L _B ′. As shown in FIG. 1 (B), the list generator displays the straight lines 4a to 4c having the lengths corresponding to the distances to the restaurants in the directions of the restaurants A to C from the vehicle position, and the straight tip portion. The POI marks 5a to 5c and the POI name are displayed in the vicinity (graphic list display).
FIG. 1 (B) is an example in which straight lines corresponding to directions and distances to restaurants A to C are displayed as a list image based on the display position of the vehicle position mark 2 on the map. As shown in FIG. 4, a straight line corresponding to the direction and distance to each of the restaurants A to C can be displayed as a list image based on the center of the screen.

Moreover, in addition to the list image display of distance and direction in FIG. 1, as shown in FIG. 2, the distance for each road type to each searched restaurant AC is obtained and converted to a straight line length on the screen, It can also be displayed so that the road type can be identified. In FIG. 2, the thick line portion FL indicates a prefectural road, a national road, and an expressway, and the thin line portion NL indicates a road other than the above road type. The arrival time list image is displayed in substantially the same manner as in FIGS.
In addition, the arrival time to each POI is calculated, the maximum arrival time among the arrival times is set as a predetermined length on the screen, and the arrival time to another POI is converted into a straight line length on the screen based on the length. It is also possible to display a straight line having the length corresponding to the arrival time from the vehicle position to each POI in each POI direction, and display the POI mark and POI name in the vicinity of the straight line end (arrival time). List image display).
Further, as shown in FIG. 3, soft keys 6a and 6b for selecting display of the distance list image and display of the arrival time are provided, and the list image display of distance (FIG. 1B) and the arrival time list image are appropriately provided. The display can be switched and displayed.

  FIG. 4 is a block diagram of the navigation device of the present invention. In the figure, 11 is a map storage medium for storing a map, for example, a DVD or hard disk, 12 is a disk controller for controlling reading of map information from the DVD or hard disk, and 13 is a position measuring device for measuring the current position of the vehicle. It consists of a vehicle speed sensor that detects the moving distance, a gyro that detects the moving direction, a CPU for position calculation, a GPS receiver, and the like. Reference numeral 14 denotes a map information memory for storing the map information read from the map recording medium 11, and as shown in FIG. 5, a total of nine map leaves MP01 to MP09 including the map leaf (MP05) and the surrounding map leaf corresponding to the vehicle position. Is held at least, and the map can be scrolled and displayed as the vehicle travels. Reference numeral 15 denotes a database memory for storing database information for peripheral facility retrieval read from the map recording medium. As shown in FIG. 6, POIs (stores, facilities, etc.) existing in an area corresponding to each leaf as shown in FIG. Name, position (latitude and longitude), genre, and other information (neighboring facilities database) are stored.

  Reference numeral 16 denotes a remote controller for performing menu selection operation, enlargement / reduction operation, destination input operation, and the like, and 17 is a remote control interface. The input operation can also be performed using a touch panel input device. 18 is a processor CPU (navigation control unit) for controlling the entire navigation device, 19 is a ROM for storing a control program for performing various controls (peripheral facility display control, guidance route search control, map matching control, etc. of the present invention), 20 A RAM for storing processing results such as a guide route, 21 is a voice guidance unit that provides guidance in the direction of travel at intersections, and 22 is a display controller that generates a map image based on map information (9 leaf information). , 23 is a VRAM for storing a map image generated by the display controller, 24 is a list image generating unit for generating a list image of the present invention, 25 is a combining unit, 26 is a monitor device, and 27 is a bus.

FIG. 7 is a processing flow of the first embodiment of the present invention, which is an example of displaying the POI searched by the peripheral facility search as shown in FIG. 1 (B) or FIG. 1 (C).
When the user wants to go to a POI of a predetermined genre around the vehicle position and the user operates the remote controller 16 to enter the peripheral facility search mode (step 101), the navigation control unit 18 displays a genre selection screen on the monitor 26 (step 101). 102). Here, when the user inputs a desired genre (for example, a restaurant) (step 103), the navigation control unit 18 refers to the surrounding facility database in the surrounding map stored in the database memory 15 and refers to the own vehicle. The restaurants A, B, and C within a predetermined distance from the position are searched (see FIG. 1A), and the distances L _A , L _B , L _C and the direction D _A along the routes RT _{A to} RT _C to each restaurant are searched. , D _B, calculates the D _C (step 104).

Next, the navigation control unit 18 sets the maximum distance (= L _C ) among the distances to the restaurants A, B, and C as a predetermined length L (cm) on the screen, and sets the distance to each restaurant based on the length. The distance is converted into straight line lengths L _A ', L _B ', L _C '(= L) on the screen (step 105). The navigation control unit 18 inputs the straight line length, direction, restaurant name, and genre to the list image generation unit 24 and instructs display of the list image. As shown in FIG. 1 (B), the list image generation unit 24 displays the straight lines 4a to 4c having the lengths corresponding to the distances from the vehicle position to the restaurants A to C in the direction of the restaurants, as shown in FIG. The POI marks 5a to 5c and the POI name are displayed in the vicinity of the straight end (step 106).
According to the first embodiment, it is possible to easily compare a plurality of candidates when determining the destination, for example, compare the direction and the distance without reading characters, and accurately determine the destination with distance priority. can do.

FIG. 8 is a processing flow of the second embodiment of the present invention, in which the POI searched by the peripheral facility search is displayed as shown in FIG. 2, and steps 201 to 203 are the same as steps 101 to 103.
When the user inputs a desired genre (for example, a restaurant) in step 203, the navigation control unit 18 refers to the surrounding facility database in the surrounding map leaf stored in the database memory 15, and is a predetermined distance from the vehicle position. The restaurants A, B, and C are searched, and the total distances L _A , L _B , and L _C along the routes RT _{A to} RT _C to each restaurant and the distances for each road type, directions D _A , D _B , D _C is calculated (step 204).

Next, the navigation control unit 18 sets the maximum distance (= L _C ) among the distances to the restaurants A, B, and C as a predetermined length L (cm) on the screen, and the distance to other restaurants based on the length. The total distance and the distance for each road type are converted into a straight line length on the screen (step 205).
The navigation control unit 18 inputs the straight line length, road type, direction, restaurant name, and genre to the list image generation unit 24 to instruct display of the list image. As shown in FIG. 2, the list image generating unit 24 draws a straight line having the length corresponding to the distance from the vehicle position to each restaurant A to C so that the road type can be identified. The POI marks 5a to 5c and the POI name are displayed in the vicinity of the straight tip (step 106). In FIG. 2, a thick line portion FL indicates a prefectural road, a national road, and an expressway, and a thin line portion NL indicates a road other than the above road type.
According to the second embodiment, the road type and the ratio of the road length for each road type can be easily visually determined, and the destination can be determined in consideration of the road type.

FIG. 9 is a processing flow of the third embodiment of the present invention, and is an example in which a straight line is displayed according to the arrival time to the POI searched by the surrounding facility search. Steps 301 to 303 are the same as steps 101 to 103. .
When the user inputs a desired genre (for example, a restaurant) in step 303, the navigation control unit 18 refers to the surrounding search database corresponding to the surrounding map leaf stored in the database memory 15, and the vehicle position is determined. Restaurants A, B, and C within a predetermined distance (see FIG. 1 (A)), and the total distances L _A , L _B , and L _C along the routes RT _{A to} RT _C to each restaurant and for each road type , And directions D _A , D _B , and D _C are calculated (step 304).

Next, the navigation control unit 18 uses the average speed set for each road type to arrive at the restaurants A, B, C along the routes RT _A -RT _C , the arrival times T _A , T _B , T _C calculates a (step 305), the maximum arrival time of該到our time (= T _C) was used as a predetermined length on the screen L (cm), the arrival time until other restaurants based on the said length Is converted to a straight line length on the screen (step 306).
Thereafter, the navigation control unit 18 inputs the straight line length, direction, restaurant name, and genre to the list image generation unit 24 and instructs the list image display. In accordance with the instruction, the list image generator 24 displays a straight line of the length corresponding to the arrival time from the vehicle position to each restaurant in the direction of each restaurant A to C, and displays the POI mark and POI name near the straight line end. (Step 307).
According to the third embodiment, it is possible to easily compare the directions and arrival times of a plurality of candidates when determining the destination without reading characters, and to accurately determine the destination with priority on arrival time. Can do.
The above is a case where the present invention is applied to the peripheral facility search. However, the present invention can also be applied to a case where a search range is designated by a distance, and a cherry blossom viewing spot within the distance is searched to display a plurality of famous spots. Further, the case where the road type is displayed so as to be identifiable has been described above. However, it may be configured to identify and display whether the road type is a toll road or not.

It is a schematic explanatory drawing (distance graphic display example) of the present invention. It is another schematic explanatory drawing (example of road type identification and distance graphic display) of this invention. It is another schematic explanatory drawing (distance / arrival time switching graphic display example) of the present invention. It is a block diagram of the navigation apparatus of this invention. It is memory content explanatory drawing of a map information memory. It is content of database memory (neighboring facility database) explanatory drawing. It is a processing flow of 1st Example of this invention. It is a processing flow of 2nd Example of this invention. It is a processing flow of 3rd Example of this invention. It is a conventional surrounding facility list display example.

Explanation of symbols

1 Map 2 Own vehicle position mark 3a-3c Location of restaurant A-C 4a-4c Straight line 5a-5c POI mark according to the distance to each restaurant A-C

Claims (5)

In a destination candidate display method in a navigation device that searches and displays a route to a destination,
Set the destination genre,
Search for a POI of the set genre and existing within a predetermined area,
The distance to each POI is calculated, the maximum distance among the distances is set as a predetermined length on the screen, and the distance to another POI is converted into a straight line length on the screen based on the length.
A straight line of the length corresponding to the distance to each POI is displayed in each POI direction, and a POI mark and a POI name are displayed near the tip of the straight line.
A destination candidate display method characterized by that. The distance for each road to the POI is obtained and converted to a straight line length on the screen, and a straight line is displayed so that the road type can be identified.
The destination candidate display method according to claim 1, wherein: In a destination candidate display method in a navigation device that searches and displays a route to a destination,
Set the destination genre,
Search for a POI of the set genre and existing within a predetermined area,
The arrival time to each POI is calculated, the maximum arrival time among the arrival times is set as a predetermined length on the screen, and the arrival time to another POI is converted into a linear length on the screen based on the length.
A straight line having the length corresponding to the arrival time to each POI is displayed in each POI direction, and a POI mark and a POI name are displayed in the vicinity of the straight line end.
A destination candidate display method characterized by that. In a navigation device that searches for and displays a route to a destination,
A setting section for setting the genre of the destination in the destination search mode;
POI database that stores the name, location, and genre of each POI,
A display unit that displays a map and graphic display of multiple destination candidates,
It searches for POIs within a predetermined area that are POIs of a set genre, calculates the distance to each POI, sets the maximum distance among the distances as a predetermined length on the screen, and uses this length as a reference A control unit that converts the distance to other POIs into a straight line length on the screen,
An image generator for a plurality of candidate destinations that generates a linear image of the length corresponding to the distance to each POI in each POI direction and generates an image of a POI mark and a POI name in the vicinity of the straight tip.
The display unit displays the plurality of destination candidates in the destination search mode.
A navigation device characterized by that. In a navigation device that searches for and displays a route to a destination,
A setting section for setting the genre of the destination in the destination search mode;
POI database that stores the name, location, and genre of each POI,
A display unit that displays a map and graphic display of multiple destination candidates,
A POI of a set genre and searching for a POI existing in a predetermined area is searched, and the arrival time to each POI is calculated, and the maximum arrival time among the arrival times is set as a predetermined length on the screen. A control unit that converts the arrival time to another POI into a straight line length on the screen based on
An image generator for a plurality of destination candidates that generates a linear image of the length corresponding to the arrival time to each POI in each POI direction, and generates an image of a POI mark and a POI name in the vicinity of the straight tip.
The display unit displays the plurality of destination candidates in the destination search mode.
A navigation device characterized by that.

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