JP2004340827A - Route chart display method and display control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a route chart display method and a display control device capable of displaying guidance information in a short time. <P>SOLUTION: In an in-vehicle unit 100, when Cape Muroto in Muroto City in Kochi Prefecture is inputted as the destination, a recommended route is calculated, and the recommended route is displayed in the superimposed state on a display screen of the own car position, and a map display screen 141 and a route information display screen 121 are displayed simultaneously on one screen. As for route information, information on the guidance crossing or the like is preferentially produced. When information on a guidance crossing or the like close to the own car position is produced, the information on the guidance crossing or the like is displayed in a display frame 123. On the upper part of the display frame 123, characters 'information is under production' for showing the effect that the information on the front guidance crossing or the like is under production are displayed together with a display frame 124. When the information on the guidance crossing or the like is calculated, the character display 'information is under production' displayed in the display frame 124 is updated with a display of the new information on the guidance crossing or the like. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a route diagram display method and a display control apparatus that can display guidance information.
[0002]
[Prior art]
Based on the recommended route data obtained by calculating the recommended route from the current position to the set destination, the name of the location that is the point, etc., is displayed in a bulleted format, allowing you to check at a glance where you need to be careful about driving Such a navigation device is known (see Non-Patent Document 1). In this navigation device, a plurality of guidance information can be displayed in a route map format from the current position toward the destination.
[0003]
[Non-Patent Document 1]
Japan Patent Office Standard Technology Collection "Car Navigation Device User Interface" Main Category 1-C-5a
[0004]
[Problems to be solved by the invention]
However, in the conventional navigation device, the guidance information is not displayed until all the guidance information is created. For this reason, when the distance from the current position of the vehicle to the destination is far, the user may wait for several minutes until the guidance information is displayed.
[0005]
The present invention provides a route diagram display method and a display control apparatus capable of displaying guidance information in a short time.
[0006]
[Means for Solving the Problems]
(1) In the route map display method according to the first aspect of the present invention, a recommended route from the current position to the destination is calculated, guidance information on the recommended route is extracted, a detailed map around the current position and the destination from the current location. The route map is displayed, and on the route diagram, the names of a plurality of guidance information are displayed at predetermined intervals in the order from the current position to the destination, and a plurality of names are displayed between the current position and the destination. When the information on the guidance point is extracted, the extracted guidance information is displayed on the route map without waiting until all the guidance information is extracted.
(2) A display control apparatus according to the invention of claim 6 includes a route calculation means for calculating a recommended route from the current position to the destination, an extraction means for extracting guidance information on the recommended route, and a detailed map around the current position. And display means for displaying a route map from the current position to the destination, and display control for controlling to display names of a plurality of guidance information at predetermined intervals in the order from the current position to the destination on the route map And when the information of a plurality of guidance points is extracted between the current position and the destination by the extraction means, the display control means is extracted without waiting until all the guidance information is extracted. The guidance information is controlled to be displayed on the route map.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 to 12, an embodiment in which the navigation device according to the present invention is applied to an in-vehicle use will be described. FIG. 1 is a system block diagram showing a configuration of a car navigation device (hereinafter referred to as an in-vehicle device 100) of the present embodiment. The in-vehicle device 100 has a function of displaying a road map around the vehicle position, a function of calculating a recommended route from the departure place to the destination, a function of performing route guidance based on the calculated recommended route, and the like. It is a device that performs so-called navigation or road guidance.
[0008]
In FIG. 1, reference numeral 111 denotes a current position detection device that detects the current position (vehicle position) of a vehicle. For example, a direction sensor 111 a that detects the traveling direction of the vehicle, a vehicle speed sensor 111 b that detects a vehicle speed, and a GPS signal from a GPS satellite. It includes a GPS sensor 111c for detecting, a gyro sensor 111d for detecting a change in the traveling direction of the vehicle, and the like. A map storage unit 112 stores map display data, route search data, and the like. These various data are read from a DVD-ROM 113 which is a recording medium. The recording medium is not limited to a DVD-ROM, and may be any recording medium such as a magnetic tape, a CD-ROM, a hard disk, or the like. A control circuit 114 controls the entire apparatus and includes a microprocessor and its peripheral circuits. The control circuit 114 executes a control program stored in the ROM 116 using the RAM 115 as a work area to perform various controls described later.
[0009]
Reference numeral 117 denotes an input device having switches for inputting a destination of a vehicle, a waypoint, and the like or inputting various operations. The input device 117 includes a microphone and can input various operations and destinations by voice. Reference numeral 118 denotes an image memory for storing image data to be displayed on the display monitor 119. This image data is created from road map drawing data and various graphic data. The image data stored in the image memory 118 is read as appropriate and displayed on the display monitor 119 as a display means. The display monitor 119 displays route information, guidance information, and the like together with a road map.
[0010]
The car navigation device (on-vehicle device) 100 configured as described above performs various types of navigation based on the vehicle position information acquired by the current location detection device 111 and the map information stored in the map storage unit 112. For example, a road map in the vicinity of the vehicle position and the vehicle position are displayed on the display monitor 119, and the driver is guided along the route obtained by the route search.
[0011]
――― Data structure ―――
FIGS. 2A and 2B are diagrams showing the configuration of map display data (road data). The road data includes link string data and mesh codes, and is stored in units of mesh areas. The link string data is a data structure in which one road is defined as a node such as an intersection and a link between the nodes. The mesh area refers to each divided area when the road map is divided into predetermined ranges. The mesh code storage area 401 stores a number for identifying the mesh area. In the link string data storage area 402, as shown in FIG. 2B, the position coordinates Xn, Yn of the node, the number of the link between the nodes, and the position coordinates Xn, Yn is stored in each area. These position coordinates are used as shape data for map display and locator processing.
[0012]
FIG. 3 is a diagram illustrating a data configuration of route search data. Unlike the road data, the route search data includes branch point information and intersection information that are not directly related to the road shape. As shown in FIG. 3, node information indicating a connection relationship with another node is stored for each connection point (node) of a link that is a minimum unit expressing a road. Each node information includes own node information of the node and adjacent node information adjacent to the node via one link, and the node position coordinates are stored in the own node information. On the other hand, in the adjacent node information, as shown in the figure, the adjacent node number, the link number from the own node to the adjacent node, the link cost of the link, and the traffic regulation information of the link are stored. Yes. Further, each node information is stored in the link connection order, and the node number of the own node can be grasped by the storing order.
[0013]
――― Route search ―――
The route search calculation is performed using the route search data described above. The route guidance data created from the route search result is created by extracting nodes on the recommended route from the departure point (vehicle position) to the destination by a known method from the route search data. This route guidance data includes guidance point data. The guidance point data includes point data (guidance information) related to a point where guidance is required, and an intersection enlarged map and audio data offset data. When the vehicle is route-guided, for example, when reaching a few hundred meters ahead of the guidance point, the offset data is referred to, an enlarged map of the intersection is displayed on the display monitor, and voice data is output from the speaker and routed to the occupant. Make a guidance.
[0014]
――― Route information ―――
In the in-vehicle device 100, after the route search calculation, route information is created and displayed on the display monitor 119 in order to perform route guidance smoothly. This route information is information about points that are points for guidance (the above guidance information). As will be described in detail later, the names of interchanges, junctions, etc. Information such as the distance and the direction of turning left and right. As for the route information, place names and the like are displayed in the itemized form on the display screen of the display monitor 119, and the recommended route is displayed in the route map form. For example, as shown in FIG. 4, the point name, the reach distance, and the right / left turn direction instruction that are route information are displayed on the display frames 123 and 124 of the route information display screen 121 provided in the right half area of the display monitor 119. The recommended routes are displayed side by side from the bottom of the screen. A vehicle position mark 125 is displayed below the display frame 123 of the route information display screen 121. As will be described later, the route information display screen 121 can be scrolled. A detailed road map around the vehicle position is displayed on the map display screen 141 provided in the left half area of the display monitor 119.
[0015]
The route information is created by extracting information such as a name associated with a node of route guidance data and a distance to each node, that is, the following information.
(1) Name of guided intersection, distance from own vehicle position, direction of left / right turn.
(2) The name of the interchange that will be the entrance to the highway / toll road and the exit to the general road, and the distance from the vehicle location.
(3) Information on facilities such as service area of highway / toll road, name of parking area, distance from own vehicle position, toilet and gas station.
(4) Interchanges and junctions of highway and toll roads that pass through, the name of the toll gate, and the distance from the vehicle location.
(5) Interchange at the exit of the expressway / toll road, service area on the route, parking area, waypoint, and estimated arrival time at the destination.
(6) The name or place name of a point where the road type changes (road type change point) on a road other than a high-speed / toll road, and the distance from the vehicle position.
In the vehicle-mounted device 100 according to the present embodiment, the information (1) to (4) described above (hereinafter collectively referred to as information such as a guidance intersection) is preferentially created and, as will be described later, As information is created, it is displayed on the display monitor 119. The information of (5) is displayed after being combined with the already created route information after all route information is created. The information (6) is created but not displayed in the in-vehicle device 100 of the present embodiment. The information (6) may be displayed as necessary.
[0016]
FIG. 5 is a flowchart showing the operation of the in-vehicle device 100 of the present embodiment. When the accessory key is turned ON by the ignition key (ACC ON), the vehicle-mounted device 100 is turned on and a program for performing the navigation process shown in FIG. 5 is started. In step S11, the current position of the vehicle is detected, and a vehicle position mark (own vehicle position mark) is displayed on the display monitor 119 together with a map around the vehicle position. In step S13, the operation waits until a destination or waypoint is input from the input device 117 by an operation of switches or a voice instruction from a microphone, and the destination or waypoint is set.
[0017]
If an affirmative determination is made in step S13, the process proceeds to step S15, and the recommended route from the current position (vehicle position) detected in step S11 to the destination input in step S13 is calculated using the route search data. Then, the process proceeds to step S17. In step S17, as shown in FIG. 6, the recommended route 142 calculated in step S15 is superimposed on the map display screen 141 displayed on the display monitor 119. Then, the route information display screen 121 is displayed on the display monitor 119 together with the map display screen 141 on which the recommended route 142 is superimposed. In step S17, the route information display road bar 127 is extended from the lower side of the display frame 123 of the route information display screen 121, and the vehicle position mark 125 is displayed below the road bar 127. A frame 123 indicates that information is being created.
[0018]
In step S19, creation of route information is started based on the recommended route data (route guidance data) calculated in step S15. In the route information creation process, information such as the aforementioned guidance intersection is created in order from the vehicle position toward the destination. If the creation of route information is started in step S19, the process proceeds to step S21. In step S21, the distance from the route guidance data to the destination, the estimated arrival time, and the highway toll are acquired and displayed on the display monitor 119. The data on the distance to the destination, the estimated arrival time, and the expressway toll are data that can be acquired when the recommended route calculation is completed. In step S21, as shown in FIG. 7, the information acquired from the route guidance data is displayed in the uppermost display column 126 of the route information display screen 121, and the process proceeds to step S23. In step S23, it is determined whether or not information such as a guidance intersection has been newly created. If an affirmative decision is made in step S23, the process proceeds to step S27, and as will be described later, the display that information is being created is updated with information such as the newly created guidance intersection, and the process returns to step S23.
[0019]
If a negative determination is made in step S23, the process proceeds to step S29, and it is determined whether or not the creation of information such as a guidance intersection has been completed. If a negative determination is made in step S29, the process returns to step S23. If an affirmative determination is made in step S29, the process proceeds to step S31 and waits until the creation of all route information is completed. If an affirmative determination is made in step S31, the process proceeds to step S33, where all route information is combined and the process returns.
[0020]
For example, when the current location is Hironodai, Zama City, Kanagawa Prefecture, and the destination of the route search is Cape Muroto, Muroto City, Kochi Prefecture, the vehicle-mounted device 100 of the first embodiment described above is route-guided as follows: it can. In the destination setting state in step S13 of FIG. 5, when Muroto Cape in Muroto City, Kochi Prefecture is input as the destination, the recommended route is calculated and the recommended route is superimposed on the map display screen 141 as shown in FIG. While being displayed, the map display screen 141 and the route information display screen 121 are simultaneously displayed on one screen. At this time, since the route information that can be displayed is not calculated, the vehicle position mark 125 is displayed below the display frame 123 of the route information display screen 121, and a message that information is being created is displayed in the display frame 123. The display column 126 does not display the distance to the destination or the estimated arrival time. Thereafter, route information creation is started (step S19). When the distance from the route guidance data to the destination, the estimated arrival time, and the highway toll are acquired, these are displayed in the display field 126 as shown in FIG. 7 (step S21).
[0021]
When information such as the first guidance intersection is created, information such as the guidance intersection is displayed on the display frame 123 as shown in FIG. 8 (step S27). In the upper part of the display frame 123, together with the display frame 124, the information such as the guidance intersection at the next point of the information such as the guidance intersection displayed in the display frame 123 is being created. "Is displayed. After that, when information such as the guidance intersection of the next point is calculated, as shown in FIG. 4, the character display of “Information is being created” displayed in the display frame 124 is displayed as a new guidance intersection. It is updated by displaying information such as (steps S23 to S27).
[0022]
As described above, information such as the guidance intersection is sequentially arranged from the vehicle position toward the destination. When the information such as the guidance intersection that is currently displayed by the input device 117 is scrolled so that information such as the guidance intersection ahead is displayed, as shown in FIG. 9, the vehicle position mark 125 is displayed on the route information display screen. It disappears from below 121. Information such as the guidance intersection displayed in the display frame 123 until immediately before scrolling is displayed together with the display frame 122 at the place where the vehicle position mark 125 was displayed until immediately before scrolling. Similarly, information such as the guidance intersection displayed in the display frame 124 until just before scrolling is displayed together with the display frame 123. The display frame 124 displays information such as the guidance intersection of the next point, which is created next to the information such as the guidance intersection displayed in the display frame 124 until just before scrolling. In this way, information such as a guidance intersection created in order from the vehicle position to the destination is displayed in order from the display frame 122 at the bottom of the route information display screen 121 toward the display frame 124 at the top. . When the input device 117 is scrolled to display further information such as a guidance intersection, the above operation is repeated. When the above-described scroll operation is repeated in a state where the creation of information such as a guidance intersection has not been completed, as shown in FIG. 10, “information is being created” indicating that information such as the next guidance intersection is being created. “Is” is displayed in the display frame 124.
[0023]
The road display bar 127 shown in each figure is a display showing a recommended route from the vehicle position to the destination. For example, the road display bar 127 that extends and is displayed on the upper side of the display frame 124 in FIG. 9 has information such as a guidance intersection or the destination destination beyond the point “branch point” displayed in the display frame 124. Indicates that information exists. The road display bar 127 that extends and is displayed on the lower side of the display frame 122 in FIG. 9 has information such as a guidance intersection or the vehicle position in front of the point “Shimotsuru” displayed in the display frame 122. Indicates to do.
[0024]
When information such as a guidance intersection is created in the range from the vehicle position to 100 km, the name of the destination and the distance to the destination already acquired from the route guidance data in step S21 described above are “information creation”. Instead of displaying “middle”, it becomes displayable. That is, as shown in FIG. 11, when information such as the guidance intersection farthest from the vehicle position is scrolled to be displayed together with the display frame 123 in the information such as the guidance intersection created, the destination of “Muroto Cape” is the destination. The point name and the distance to the destination are displayed in the display frame 124. In this state, when information such as a new guidance intersection is calculated, the display of the display frame 124 is updated with the calculated information such as the new guidance intersection. When all of the information such as the guidance intersection and other route information are calculated, as shown in FIG. 12, the estimated arrival time at the interchange serving as the destination and the exit of the expressway / toll road is the information such as the guidance intersection described above. At the same time, it can be displayed in the display frames 122 to 124. FIG. 12 shows the information displayed on the information such as the guidance intersection two before the Cape Muroto of the destination by scrolling. Arbitrary route information from the vehicle position to the destination is displayed in the display frames 122 to 124 by scrolling.
[0025]
The in-vehicle device 100 of the above-described embodiment has the following operational effects.
(1) In the conventional navigation device, the guidance information is not displayed until all the guidance information is created. On the other hand, in the navigation apparatus according to the present invention, the in-vehicle device 100 is configured to display on the display frames 122 to 124 of the route information display screen 121 as soon as information such as the guidance intersection is created. As a result, information such as the guidance intersection is displayed in a short time, so that the user can be guided quickly without waiting for many minutes until the guidance information is displayed.
(2) Information such as the guidance intersection is calculated and displayed from the closest to the vehicle position. Thereby, it is possible to guide immediately after the route search calculation is completed.
(3) Since the information such as the guidance intersection is displayed in the form of a route map from the vehicle position to the destination, it is easy for the user to determine the guidance point such as a right or left turn.
(4) It is possible to display all route information from the vehicle position to the destination by scrolling the display screen as well as some of the most recent one from the vehicle position. Therefore, the user can confirm the route information ahead from the vehicle position. As a result, the user can easily understand the entire recommended route.
(5) Among the route information, the information such as the guidance intersection is created with priority over the road type change point of the general road, so the user can obtain the information such as the guidance intersection in a shorter time, Convenience is high.
[0026]
――― Modifications ――――
(1) In the above description, when information such as a guidance intersection is created in a range from the vehicle position to 100 km, the destination point name and the distance to the destination can be displayed on the display frame 124. However, the present invention is not limited to 100 km.
(2) In the above description, after the start of creation of route information (step S19), information such as the first intersection is created in the display frame 123 as shown in FIG. 7 until information such as the first guidance intersection is created (step S23). Although the text “information is being created” indicating that information is being created is displayed, the present invention is not limited to this. For example, the distance to the destination and the name of the destination acquired in step S21 and displayed in the display frame 126 between the start of the creation of the route information and the creation of information such as the first guidance intersection are displayed as “ It may be displayed in the display frame 123 instead of the display of “information is being created”.
[0027]
In the above description, the road display bar 127 is displayed on the route information display screen 121. However, a similar bar can be displayed next to the road display bar 127, and the road traffic information received from the outside is the color of this bar. You may make it change and display according to the degree of traffic jams (for example, VICS etc. which a foundation road traffic information system center provides). Further, the color of the road display bar 127 itself may be changed according to the received road traffic information. Furthermore, the above-described embodiments and modifications may be combined.
[0028]
In the above-described embodiment and its modifications, for example, the display means corresponds to the display monitor 119. The route calculation means, the extraction means, and the display control means are realized by the control circuit 114 and a program executed by the control circuit 114. Furthermore, as long as the characteristic functions of the present invention are not impaired, the present invention is not limited to the device configuration in the above-described embodiment.
[0029]
【The invention's effect】
According to the present invention, a plurality of guidance information obtained sequentially from the recommended route data is sequentially displayed as soon as it is obtained by the computation. Thus, since the guidance information is displayed in a short time, the user can wait quickly without waiting for several minutes until the guidance information is displayed.
[Brief description of the drawings]
FIG. 1 is a system block diagram showing a configuration of a car navigation device (vehicle equipment 100) of an embodiment.
FIG. 2 is a diagram showing a configuration of map display data (road data) of the in-vehicle device 100. FIG.
FIG. 3 is a diagram showing a data configuration of route search data of the in-vehicle device 100;
4 is a diagram showing a display example of a display monitor 119 of the in-vehicle device 100. FIG.
FIG. 5 is a flowchart showing the operation of the in-vehicle device 100.
6 is a diagram showing a display example of a display monitor 119 of the in-vehicle device 100. FIG.
7 is a diagram showing a display example of a display monitor 119 of the in-vehicle device 100. FIG.
8 is a diagram showing a display example of a display monitor 119 of the in-vehicle device 100. FIG.
FIG. 9 is a diagram showing a display example of the display monitor 119 of the in-vehicle device 100.
10 is a diagram showing a display example of a display monitor 119 of the in-vehicle device 100. FIG.
11 is a diagram showing a display example of the display monitor 119 of the in-vehicle device 100. FIG.
12 is a diagram showing a display example of the display monitor 119 of the in-vehicle device 100. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Vehicle equipment 112 Map memory | storage part 113 DVD-ROM 114 Control circuit 115 RAM 116 ROM
119 Display monitor 121 Route information display screen 122-124, 126 Display frame 125, 145 Own vehicle position mark 127 Road display bar 141 Map display screen 142 Recommended route

Claims (10)

Calculate the recommended route from the current position to the destination,
Extracting guidance information on the recommended route;
A detailed map around the current location and a route map from the current location to the destination are displayed.
On the route map, the names of the plurality of guidance information are displayed at predetermined intervals in the order from the current position to the destination,
When information on a plurality of guidance points is extracted between the current position and the destination, the extracted guidance information is displayed on the route map without waiting until all guidance information is extracted. A characteristic route map display method. The route map display method according to claim 1,
Extract the guidance information on the recommended route in order from the current position to the destination,
A route diagram display method characterized by displaying guidance information at least when guidance information of a point closest to the current position is extracted. In the route map display method according to claim 1 or 2,
Before displaying the guidance information on the route map, information on the destination is displayed on the route map together with a mark indicating the current position. In the route map display method according to any one of claims 1 to 3,
A route diagram display method characterized in that guidance information that cannot be displayed on one screen among guidance information between the current position and the destination is displayed by scrolling. In the route map display method according to any one of claims 1 to 4,
The guidance information includes at least one type of information,
A route diagram display method, wherein the guidance information is extracted and displayed in order from a type having a higher priority. A route calculation means for calculating a recommended route from the current position to the destination;
Extraction means for extracting guidance information on the recommended route;
Display means for displaying a detailed map around the current position and a route map from the current position to the destination;
On the route map, the display control means for controlling to display the names of the plurality of guidance information at a predetermined interval in order from the current position to the destination,
When the information of a plurality of guidance points is extracted between the current position and the destination by the extraction means, the display control means displays the extracted guidance information without waiting until all the guidance information is extracted. A display control device that controls to display on a route map. The display control device according to claim 6,
The extraction means sequentially extracts the guidance information on the recommended route from the current position toward the destination,
The display control device controls to display the guidance information when at least the guidance information closest to the current position is extracted by the extraction means. In the display control device according to claim 6 or 7,
The display control means controls to display information on the destination on the route map together with a mark indicating the current position before displaying the guidance information on the route map. apparatus. In the display control device according to any one of claims 6 to 8,
The display control device controls the display information to be displayed by scrolling the guide information that cannot be displayed on one screen among the guide information between the current position and the destination. In the display control device according to any one of claims 6 to 9,
The extraction means extracts at least one type of guidance information on the recommended route in order from the type with the highest priority,
The display control device, wherein the display control device controls to display in order from the type with the highest priority extracted by the extraction device.

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