JP2004340826A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system capable of appropriately grasping lane conditions of intersections on a route. <P>SOLUTION: The navigation system performs a display on lanes of two intersections on the route at a distance of 500 m or closer from a present location of a vehicle regardless of whether they are guidance intersections or nonguidance intersections. The display on the lanes are displayed by different colors depending on whether they are guidance intersections or nonguidance intersections and whether they have lane information or not. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a navigation device that performs route guidance.
[0002]
[Prior art]
There is known a car navigation device that displays a road map around a current location, calculates a route from a departure place to a destination, and performs route guidance based on the calculated route. In such a car navigation device, it is known that when approaching a guidance intersection for performing route guidance, if there is lane information at the guidance intersection, display related to the lane is performed (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-251197
[Problems to be solved by the invention]
However, even when the vehicle is not approaching the route guidance intersection, there are times when it is desired to grasp the lane condition of the intersection on the route.
[0005]
The present invention provides a navigation device capable of appropriately grasping the lane status of an intersection on a route.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is applied to a navigation device, and includes: a route search unit that obtains a route from a departure place to a destination; and a route guidance unit that performs route guidance based on the obtained route. Regarding a plurality of intersections on a route that are within a predetermined distance from the current position of the vehicle, regardless of whether the route is a guided intersection or a non-guided intersection that does not perform route guidance, the display device displays the lane on the display device. It is characterized by the following.
According to a second aspect of the present invention, in the navigation device according to the first aspect, the route guidance means displays, in the display related to the lane, a display that allows identification of a guided intersection or a non-guided intersection.
According to a third aspect of the present invention, in the navigation device according to the second aspect, the route guidance unit changes the display mode of the lane other than the lane to be route-guided in the display related to the lane, depending on whether it is a guided intersection or a non-guided intersection. It is characterized by the following.
According to a fourth aspect of the present invention, in the navigation device according to the second aspect, the route guidance unit changes the display mode of the display other than the lane in the display related to the lane depending on whether it is a guided intersection or a non-guided intersection. Is what you do.
According to a fifth aspect of the present invention, in the navigation device according to any one of the third to fourth aspects, the route guidance means has a display form of a display color.
According to a sixth aspect of the present invention, in the navigation device according to any one of the second to fifth aspects, the guidance intersection for performing the route guidance is an intersection in which the route turns right or left, and the non-route guidance is not performed. The guidance intersection is an intersection where a route goes straight.
According to a seventh aspect of the present invention, in the navigation device according to any one of the first to sixth aspects, the route guidance unit determines a predetermined number of intersections within a predetermined distance from the current location of the vehicle from the current location of the vehicle. The display related to lanes is performed by arranging the screens of the display device from top to bottom in a distant order, and the display related to lanes shifts from top to bottom with the movement of the current location of the vehicle.
According to an eighth aspect of the present invention, in the navigation device according to any one of the first to seventh aspects, the route guidance means visually displays the distance to the intersection in the display related to the lane. It is to be.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
-1st Embodiment-
FIG. 1 is a block diagram of a vehicle-mounted navigation device (hereinafter, simply referred to as a navigation device) 1 according to the present embodiment. The navigation device 1 includes a control device 11, a DVD drive device 12, a current position detection device 13, an input device 14, a memory 15, a communication interface 16, and a monitor 17.
[0008]
The control device 11 includes a microprocessor and its peripheral circuits. The DVD drive device 12 is a device that mounts the recording medium 3 and reads map data and the like. The recording medium 3 is a DVD storing map data and the like. Note that a CD-ROM or another recording medium may be used.
[0009]
The current position detection device 13 is a current position detection device that detects the current position of the vehicle. For example, a direction sensor that detects the traveling direction of the vehicle, a vehicle speed sensor that detects the vehicle speed, and a GPS that detects a GPS signal from a GPS (Global Positioning System) satellite. It consists of sensors and the like. The input device 14 is an input device for inputting a destination of a vehicle or the like when searching for a route. The remote control may be used, or a touch panel provided on the screen of the monitor 17 may be used.
[0010]
The memory 15 is a memory that stores vehicle position information and the like detected by the current position detection device 13 and stores node information and link information on a recommended route calculated by the control device 11. It is. The communication interface 16 is an interface for connecting the communication device 2. Use of a mobile phone and connection with the Internet 4 are possible via the communication interface 16. The monitor 17 is a display device that displays a map, a recommended route, and various information. The monitor 17 may be provided integrally as a part of the navigation device 1 or may be provided separately as a housing. Further, only the monitor 17 may be connected to the navigation apparatus main body by a cable or the like and provided at a separated position.
[0011]
The control device 11 displays a road map and searches for a route (route calculation) using the current position information of the vehicle detected by the current position detection device 13 and map data read from the recording medium 3 via the DVD drive device 12. And various navigation processes such as route guidance. Note that various processing programs executed by the control device 11 are incorporated in a ROM (not shown) provided in the control device 11.
[0012]
The map data stored in the recording medium 3 is information related to a map, and is classified into map display data, route guidance data, route search data, and the like. The map display data is further classified into road data, background data, and name data. The road data is data used for displaying a road, identifying the current location of a vehicle, and performing map matching. The background data is data for displaying a background of a road or a road map. The name data includes a place name, a building name, and the like, and is data used when displaying a road map.
[0013]
The route guidance data includes intersection name, road name, destination signboard (direction name, etc.) information, and is used when guiding a recommended route to a driver or the like based on the calculated recommended route. The route guidance data further has lane information of each intersection. The route search data is network data including branch information that is not directly related to the road shape, and is mainly used when calculating a recommended route (route search).
[0014]
The navigation device 1 according to the present embodiment displays a lane (lane) using the lane information of each intersection at the time of route guidance.
[0015]
FIG. 2 and FIG. 3 are diagrams for explaining the display related to the lanes according to the present embodiment. FIG. 2 is a diagram of a one-screen display for displaying a planar map on the entire monitor 17. FIG. 3 is a diagram of a two-screen display displaying a plan map and an enlarged view of an intersection. 2 and 3 are displayed on a predetermined scale, and a current position mark 21 of the vehicle (hereinafter, sometimes referred to as the current position 21 of the vehicle or simply the current position 21) and a route 22 are displayed on the flat map. . The route 22 is displayed with a different color from the other roads on the map and with a larger thickness.
[0016]
An intersection where route guidance is to be performed is called a guided intersection, and an intersection where route guidance is not performed is called a non-guided intersection. A guided intersection is an intersection that makes a right or left turn, and a non-guided intersection is an intersection that goes straight through the intersection. Here, the right turn and the left turn do not necessarily mean turning at a right angle, but also include turning at an angle and turning off the main line to a side road. In addition, the guidance intersection includes an intersection in which some route guidance is performed without being limited to right and left turns. For example, a case where a lane change guidance is performed is also included. Conversely, an unguided intersection is an intersection where no route guidance is performed. Route guidance includes not only display guidance but also audio guidance.
[0017]
When a normal vehicle that has not yet reached the guidance intersection is running, one screen is displayed. When the vehicle approaches the guidance intersection, a two-screen display of a plan map and an enlarged view of the intersection is displayed. In the navigation device 1 of the present embodiment, when the vehicle approaches 300 m from the guidance intersection, the two-screen display in FIG. 3 is performed. In the case of FIG. 2, the distance from the current position of the vehicle to the guidance intersection is 450 m, and one screen is displayed. The distance to the guidance intersection is indicated by the guidance intersection mark 23. The guidance intersection mark 23 displays a distance to the next guidance intersection and a mark indicating in which direction the vehicle should turn right or left. The display settings can be changed arbitrarily, such as displaying two screens during normal driving, or continuing one screen display even when approaching a guidance intersection. The above condition of 300 m may be another value. In addition, the user may be allowed to make changes.
[0018]
In FIG. 2, regarding the intersection 24 and the intersection 25, the displays 26 and 27 regarding the lanes at the respective intersections are displayed on the upper left of the screen. The displays 26 and 27 related to the lanes indicate the number of intersections within a predetermined distance (for example, 500 m in the present embodiment) from the current location of the vehicle (for example, two in this embodiment). When there is information, a display related to the lane is performed. When there is only one intersection having the lane information, the display related to the lane is also only one at the intersection. The predetermined distance 500m and the predetermined number 2 may be other values. In addition, the user may be allowed to make changes.
[0019]
The displays 26 and 27 relating to the lanes are displayed from bottom to top in ascending order from the current location of the vehicle. If there is no intersection within 500 m from the current position of the vehicle, there is no indication on the lane. When the first intersection enters within 500 m as the vehicle travels, a display on the lane of the intersection is first displayed on the upper side. Next, when the second intersection enters within 500 m, the display relating to the lane of the first intersection moves downward, and the display relating to the lane of the second intersection is displayed above.
[0020]
When the vehicle passes through the first intersection, the display on the lane of the first intersection is deleted. At this time, if there are two or more intersections other than the first intersection within 500 m from the current position of the vehicle, the display relating to the lane of the first intersection is deleted and the display relating to the lane of the second intersection is simultaneously performed. The display moves to the lower side and displays the lane of the third new intersection upward.
[0021]
As described above, the displays 26 and 27 relating to the lanes are displayed side by side, and the displays 26 and 27 relating to the lanes undergo the above-mentioned transitions as the vehicle moves, so that it is imagined that the intersections 24 and 25 are continuous. It will be easier. This is particularly effective when the map is displayed in a head-up display.
[0022]
In the plan map, guide pins 28 and 29 are displayed at intersections where the display related to lanes is made. The guide pin 28 corresponds to the display 26 for the lane, and the guide pin 29 corresponds to the display 27 for the lane. Thereby, it is possible to see at a glance which intersection lane is displayed on the planar map.
[0023]
FIG. 4 is an enlarged view of the displays 26 and 27 related to lanes. The displays 26 and 27 related to the lanes include base displays 31 and 32, lane displays 33 and 34, and distance bars 35 and 36. Since the lane displays 33 and 34 and the distance bars 35 and 36 are displayed as if they were placed on the base displays 31 and 32, the base displays 31 and 32 may be called cushion displays.
[0024]
In the present embodiment, the display colors are selectively used as shown in the table of FIG. 5 depending on whether there is a guided intersection, a non-guided intersection, or whether there is lane information. For example, if the intersection is a guided intersection and there is lane information, it is blue. If the intersection is a guided intersection and there is no lane information, it is pink. If the intersection is a non-guided intersection and there is lane information, it is gray (gray).
When the intersection is a non-guided intersection and there is no lane information, no display is made and gray (gray) is displayed. The path 22 uses a pink color.
[0025]
In FIG. 2, intersection 24 is a non-guided intersection, where no route guidance is provided and the vehicle is expected to go straight. However, it has lane information. In the display 26 related to the lane corresponding to the intersection 24, the base display 31 is displayed in gray. Lane 37 is a right turn lane, lane 38 is a straight lane, and lane 39 is a left turn lane. Therefore, in the lane display 33, only the lane 38 is displayed in pink indicating the guidance route, and the lanes 37 and 39 are displayed in gray. An arrow indicating straight ahead is also displayed on the lane 38. That is, gray is displayed on the lanes 37 and 39 other than the guided lane 38, indicating that there is lane information but that it is a non-guided intersection. The lane 37 is a lane that has been increased as a right-turn lane, and it can be seen that the lane 37 has been increased by a line display with a lower part cut off and a lane corner display.
[0026]
The distance bar 35 is a display visually indicating the distance from the current position 21 of the vehicle to the intersection 24 corresponding to the display 26 related to the lane. In the present embodiment, when the intersection enters within 500 m from the position of the vehicle, the display on the lane is made, so that the entire length of the distance bar 35 corresponds to this 500 m. The black portion on the right side of the distance bar 35 indicates the remaining distance, which becomes shorter as the vehicle advances.
[0027]
On the other hand, the intersection 25 is a guidance intersection and has lane information. In the display 27 related to the lane corresponding to the intersection 25, the base display 32 is displayed in blue. Lanes 40 to 42 are lanes that can be turned right, lane 43 is a lane that allows straight ahead and left turn, and lanes that cannot be turned right. Therefore, in the lane display 34, the lanes 40 to 42 are displayed in pink indicating the guidance route, and the lane 43 is displayed in blue. That is, in the lanes 43 other than the guided lanes 40 to 42, blue indicating that this intersection is a guidance intersection and there is lane information is displayed.
[0028]
Similar to the distance bar 35, the distance bar 36 is a display visually indicating the distance from the current position 21 of the vehicle to the intersection 25 corresponding to the display 27 related to the lane. By displaying the distance bar 35 and the distance bar 36 in this manner, the corresponding intersection 24,
The distance up to 25 can be easily grasped visually. In addition, since the distance bar 35 and the distance bar 36 are displayed side by side vertically, it is possible to easily grasp whether the corresponding intersections 24 and 25 are close to or away from each other.
[0029]
Also, by displaying the lanes 26 and 27 in different colors, it is possible to see at a glance whether the intersection corresponding to the display related to the lane is a guided intersection or a non-guided intersection, and whether or not there is lane information. . If there is lane information at a non-guided intersection and all the lanes are allowed to go straight, the lane displays are all pink, and there is no lane other than the lane to be guided. Even in this case, since the base display is displayed in gray, it can be seen at a glance that it is a non-guided intersection. Further, since the lane to be guided is displayed in pink with the same color as the route 22, it can be visually recognized at a glance that the lane is the lane to be guided.
[0030]
Further, the colors of the guide pins 28 and 29 are also set to gray and blue in accordance with the indications 26 and 27 relating to the lanes, so that the correspondence is easy to understand. However, guide pins of a plurality of colors may be used, and guide pins of the same color may be displayed at the intersection on the map and beside the display related to the lane corresponding thereto. In this case, the colors of the guide pins do not have to be particularly matched with the colors shown in FIG. Thus, even if the intersections are under the same conditions, for example, both are non-guided intersections with lane information (gray), the correspondence between the intersections on the map and the display related to the lanes can be seen at a glance by color coding of the guide pins. I can figure it out.
[0031]
At the intersection 44 in FIG. 2, no indication regarding lanes is made. This is because the intersection 44 is a non-guided intersection and has no lane information. There is no lane information either when the actual road itself is reduced to one lane or when there are multiple lanes on the actual road but no lane information data is stored. Is.
[0032]
Next, FIG. 3 will be described. FIG. 3 is a two-screen display displayed when the current position of the vehicle is approaching 300 m from the guidance intersection, as described above. The left side of the screen is the same as that of FIG. 2 described above, and about half of the current position of the vehicle is displayed. The display contents of the displays 26 and 27 relating to the lanes are the same as those in FIG. The right side of the screen is an enlarged view of the intersection. FIG. 7 is a diagram showing a state of route guidance at an intersection 25. In FIG. 3, a deformed display 51 (hereinafter, referred to as a route 51) is provided for the same route as the route 22 in FIG. The route 51 has the same pink color as the route 22. Reference numeral 52 denotes a landmark, for example, a landmark such as a convenience store, a gas station, or a hamburger shop. Here, the mark of the ABC convenience store is displayed. The intersection 25 and the intersection 24 are intersections with traffic lights, and the traffic light marks 53 and 54 are displayed.
[0033]
On the upper side 55 of the screen, a direction indicating the direction to be guided is displayed, and on the lower side 56 of the screen, an intersection name 57 of the guidance intersection is displayed. Further, along with the intersection name 57, a display 58 indicating whether there is a traffic light and a lane display 59 are displayed. The lane display 59 has the same contents as the lane display of the display 26 related to lanes. The enlarged view of the intersection is a view in which the intersection 25 is overlooked from above the own vehicle position, and each road has a deformed display. Further, a grid line with a dip in front is also displayed so that it can be understood that the image is an overhead view.
[0034]
As a result, it can be understood that the ABC convenience store turns right at the intersection two corners ahead of the current position 21 of the vehicle at the traffic light. A large arrow is displayed on the route 51 so that the right turn direction can be recognized at a glance. In addition, it is also known which direction the vehicle is guided, and the name of the guidance intersection is also known. Furthermore, the lane display 59 allows the user to grasp the lane information of the intersection 25 simply by watching the enlarged view of the intersection on the right side of the screen. The lane display 59 is also color-coded in the same manner as the lane display 34 of the display 26 related to lanes.
[0035]
Next, a control flowchart of the present embodiment will be described. FIG. 6 is a diagram showing a control flowchart relating to lane display. The control device 11 executes a control program stored in a ROM (not shown). This process is repeatedly executed at a predetermined timing.
[0036]
In step S1, the current position detection device 13 detects the current position of the vehicle. In step S2, it is determined whether or not there is an intersection having lane information within 500m from the current location by referring to the intersection information table.
[0037]
FIG. 7 is a diagram showing the configuration of the intersection information table referred to here. The intersection information table is a table in which information on up to 10 intersections within a predetermined distance (20 km in the present embodiment) on the route from the current position of the vehicle is collected. The intersection information table is created in the memory 15 by the control device 11 with reference to the current position of the vehicle, the route search result, and the guidance data, and is updated, for example, every one second. All guided intersections and intersections that are non-guided intersections but have lane information are extracted. An intersection without lane information that is a non-guided intersection is not extracted. By creating such an intersection information table, various processes can be speeded up. The predetermined distance and the maximum number may be other values.
[0038]
The intersection information table includes 71 pieces of intersection information, and intersection information #m (73) from intersection information # 0 (72). The number of intersection information stores the number of intersection information (the number of intersections) stored in the intersection information table, and each intersection information stores various information described below. Each intersection information includes a mesh ID 74, an X coordinate 75, a Y coordinate 76, a guidance flag 77, a distance 78 to the intersection, a landmark ID number 79, a landmark ID 80, a lane number 81, lane information 82, and a traffic light flag 83. You.
[0039]
The mesh ID 74 stores a mesh ID at which the intersection is located. The mesh ID is an ID for specifying one mesh in map data divided and managed in a mesh shape. The X coordinate 75 and the Y coordinate 76 are position coordinates of the intersection in the mesh. The guidance flag 77 is a flag for identifying whether the intersection is a guidance intersection or a non-guidance intersection. A TRUE value is set for a guidance intersection, and a FALSE value is set for a non-guide intersection. As the distance 78 to the intersection, the distance on the route from the current location of the vehicle to the intersection is set. The number 79 of landmark IDs is set when there is a landmark at the intersection. The landmark is a landmark for route guidance, for example, a famous building, a convenience store, a gas station, a restaurant, and the like. The landmark ID is landmark display data for displaying the landmark. Is an ID for referring to.
[0040]
The intersection information table also stores lane information for displaying a lane. In the present embodiment, the lane information is stored in the guidance data and is extracted from the guidance data. The number of lanes 81 is the number of lanes entering the intersection, and the lane information 82 is information on each lane. The lane information includes information such as whether each lane can go straight, can turn right, can turn left, and is an additional lane. The additional lane refers to a lane in which, for example, a right turn dedicated lane is added when approaching the intersection. If the number of lanes 81 is set to zero, it means that there is no lane information at the intersection. The lane display 33, 34, 59 described above can be displayed using such lane information. The traffic light flag 83 is an identification flag indicating whether or not there is a traffic light at the relevant intersection. If there is, the TRUE value is set, and if not, the FALSE value is set.
[0041]
Returning to the flowchart of FIG. 6, the description will be continued. In step S2, it is determined whether or not there is an intersection having lane information within 500m from the current location while referring to the distance 78 to the intersection and the number of lanes 81 in the intersection information table. If it is determined in step S2 that there is an intersection, the process proceeds to step S3, and it is determined whether the number of the intersections is two or more. In the present embodiment, this is for displaying up to two lanes.
[0042]
If it is determined in step S3 that the number is two or more, the process proceeds to step S4. In step S4, a display related to the lane is displayed below the first intersection. Next, in step S5, a display related to the lane is displayed above the second intersection, and the process is terminated. The display relating to the upper lane corresponds to the display 27 relating to the lane in FIG. 2, and the display relating to the lower lane corresponds to the display 26 relating to the lane. That is, the display related to the lane at the intersection closer to the current location is displayed on the lower side of the screen, and the display related to the lane farther away is displayed on the upper side of the screen.
[0043]
If it is determined in step S3 that the number is not two or more, that is, if it is determined that the number is one, the process proceeds to step S6. In step S6, for one intersection, a display related to the lane is displayed on the upper side. Next, in step S7, the display related to the lower lane is deleted, and the process ends. If there is no display from the beginning, the process is stored as it is. On the other hand, if it is determined in step S2 that there is no intersection having lane information within 500 m from the current location, the process proceeds to step S8. In step S8, if there is a display related to the lane, it is deleted, and the process is terminated.
[0044]
By such control, the display related to the lane as described above with reference to FIG. 2 is performed.
[0045]
FIG. 8 is a diagram showing a control flowchart for controlling whether to perform the one-screen display of FIG. 2 or the two-screen display of FIG.
[0046]
In step S11, the current location of the vehicle is detected by the current location detection device 13. In step S12, it is determined with reference to the intersection information table (FIG. 7) whether or not there is a guidance intersection within 300 m from the current location. The process is performed with reference to the distance 78 to the intersection and the guidance flag 77 in the intersection information table. If it is determined in step S12 that there is a guidance intersection, the process proceeds to step S13. In step S13, a setting is made to display the two screens shown in FIG. On the other hand, if it is determined in step S12 that there is no guidance intersection, the process proceeds to step S14. In step S14, a setting is made to display the one screen shown in FIG.
[0047]
Use of the navigation device of the present embodiment described above has the following effects.
(1) Not only when the vehicle is approaching a guidance intersection, the lane condition of an intersection within a predetermined distance from the current position can always be grasped. That is, the lane condition of the intersection on the route can be grasped regardless of whether the intersection is a guided intersection or a non-guided intersection.
(2) Since the lane information of a plurality of intersections is displayed, it is possible to grasp the lane condition of the intersection ahead on the route. In particular, it is possible to grasp the lane condition of the intersection ahead of the guidance intersection.
(3) Since the displays relating to the lanes are displayed side by side and the display relating to the lanes moves as the vehicle moves, it is easy to imagine that these intersections are continuous. This is particularly effective when the map is displayed in a head-up display.
(4) Since the display related to the lanes is color-coded, it is possible to see at a glance whether the intersection corresponding to the display related to the lane is a guided intersection or a non-guided intersection, and whether or not there is lane information. Even if there is lane information at a non-guided intersection and all lanes are allowed to go straight, the color of the base display indicates at a glance that it is a non-guided intersection. Further, since the lane to be guided is displayed in pink of the same color as the guidance route, it can be visually recognized at a glance that the lane is the lane to be guided.
(5) In the plan map, guide pins are displayed at intersections where the display related to lanes is made. The display relating to the guide pin and the lane correspond, and it is possible to see at a glance which intersection lane is displayed on the planar map. In addition, since the colors of the guide pins are unified with the display related to the lanes, it is easier to understand the correspondence between the guide pins.
(6) By displaying guide pins of the same color on both the intersection and the display on the lane, the correspondence between the intersection on the map and the display on the lane can be grasped at a glance. In this case, the colors of the guide pins need not correspond to the colors shown in FIG. 5, and other colors can be used. Thus, even if the intersections are under the same conditions, for example, both are non-guided intersections with lane information (gray), the correspondence between the intersections on the map and the display related to the lanes can be seen at a glance by color coding of the guide pins. I can figure it out.
(7) Since the distance bar is displayed on the display related to the lane, the distance to the corresponding intersection can be visually grasped at a glance. Further, since the two distance bars are displayed side by side vertically, it is possible to easily grasp whether the corresponding two intersections are close to or away from each other.
(8) Since the lane display of the guidance intersection is also displayed on the enlarged view of the intersection, the lane condition of the guidance intersection can be grasped only by watching the enlarged view of the intersection.
[0048]
-2nd Embodiment-
The navigation device according to the second embodiment displays a deformed straight route bar in addition to the displays of FIGS. 2 and 3 in the first embodiment. The block diagram of the navigation device according to the second embodiment is similar to the block diagram of FIG. 1 according to the first embodiment, and thus the description thereof is omitted. The reference numerals of the respective components are given with reference to FIG.
[0049]
FIG. 9 and FIG. 10 are diagrams for explaining the display related to the lane and the display of the route bar according to the present embodiment. FIG. 9 corresponds to FIG. 2 and FIG. 10 corresponds to FIG. 3, except that the display of the route bar is added. Therefore, the route bar will be described with reference to the drawings used in the first embodiment as appropriate.
[0050]
In the one-screen display of FIG. 9, the route bar 90 is displayed vertically at the right end of the screen. In the two-screen display of FIG. 10, the route bar 90 is displayed vertically between the two screens. The display position of the route bar 90 may be another position. However, it shall be displayed vertically on the screen. The route bar 90 performs a deformed display of a route at a predetermined distance from the current position of the vehicle and an intersection existing therebetween. The predetermined distance is, for example, 1 km. This predetermined distance may be changed according to the scale of the map, or may be changed according to a user setting. Further, it may be changed depending on whether it is a general road or a highway. On highways, make it longer.
[0051]
The route bar 90 displays a route 91, the current location 21 of the vehicle, and intersections 92 to 94. The path 91 deforms the actual path 22 and is represented by a straight rectangle having a predetermined width. Each of the intersections 92 to 94 is represented as a cross intersection by a route 92 and an elongated short rectangle having a predetermined width and intersecting the route 92 at right angles. The route bar 90 can be said to be a deformed shape obtained by combining rectangular shapes. Further, even if the actual route is bent at the guidance intersection, the route bar is indicated by a straight line. In addition, the rectangular width of the route 91 is larger than the rectangular width extending laterally of each of the intersections 92 to 94. Intersection 92 corresponds to intersection 24 on the map, intersection 93 corresponds to intersection 25 on the map, and intersection 94 corresponds to intersection 95 on the map. Each intersection is color-coded as described in FIG. 5 of the first embodiment. Specifically, the intersection 92 is gray because there is lane information at a non-guided intersection, the intersection 93 is blue because there is lane information at a guided intersection, and the intersection 94 is pink because there is no lane information at a non-guided intersection.
[0052]
The current position 21 of the vehicle is fixedly displayed, and the display of the intersections 92 to 94 moves downward as the vehicle moves. The positions of the intersections 92 to 94 on the route bar are displayed in proportion to the distance from the current location 21 to each intersection. Since the intersections 92 to 94 are arranged in the route bar 90 in proportion to the distance to each intersection, the remaining distance to each intersection can be visually grasped. Therefore, the route bar 90 may be called a vertical remaining distance bar. When there is a traffic light at each intersection, the traffic light mark may be displayed in the same manner as the traffic light marks 53 and 54 in FIG.
[0053]
In the present embodiment, the displays 26 and 27 relating to the lanes and the intersections 92 and 93 are associated with each other by color coding, so that the correspondence can be understood at a glance. In addition, a thin line that does not disturb the display of the map may be displayed and connected.
[0054]
FIG. 11 is a diagram showing a control flowchart of control for displaying the route bar. In step S21, the current position of the vehicle is detected by the current position detection device 13. In step S22, referring to the intersection information table (FIG. 7), intersection information within 1 km from the current location is acquired. In step S23, the intersection is displayed on the route bar 90 together with the current location 21 using the acquired intersection information. At this time, based on the information on the guidance flag 77, the distance 78 to the intersection, and the number of lanes 81 in the intersection information table, colors are displayed according to the table in FIG. If there is a traffic light at the intersection based on the traffic light flag 83, a traffic light mark is also displayed. The position of the intersection to be displayed is 1 km for the entire route bar, and is proportionally distributed based on data of the distance 78 to the intersection.
[0055]
When the navigation device according to the second embodiment described above is used, the following effects can be obtained in addition to the effects of the first embodiment.
(1) The status of an intersection on a route can be immediately grasped by a simple display. For example, it is possible to grasp at a glance how many intersections are located and how many are within a predetermined distance (1 km in the above example) from the current position of the vehicle. Further, it is possible to grasp at a glance whether or not those intersections are guidance intersections and whether or not there is lane information. For example, it is possible to immediately grasp which intersection should be turned.
(2) Since the display related to the lane is also displayed together with the display of the route bar, when it is determined that there is lane information at a certain intersection by the route bar and it is desired to know the details of the lane information, the information is immediately displayed in the detailed lane of the corresponding intersection. You can grasp.
(3) Since the route bar is displayed together with the map display, the outline of the intersection on the route is grasped by the route bar, and the route on the map can be grasped by directly looking at the map display.
[0056]
Note that, in the above-described embodiment, an example in which a planar map is displayed has been described, but the present invention is not limited to this example. For example, the plane map may be a so-called bird's-eye view. The bird's-eye view is a map obtained when looking down on the plane map at a predetermined angle from the rear of the current position of the vehicle, and can be obtained by performing a predetermined coordinate conversion process based on the plane map data.
[0057]
In the above-described embodiment, an example has been described in which the displays 26 and 27 related to lanes are displayed at the upper left of the screen. However, the present invention is not limited to this. The display positions of the displays 26 and 27 regarding the lanes may be other positions. Alternatively, the user may specify the information.
[0058]
In the above-described embodiment, an example has been described in which the intersection information table does not extract an intersection that is a non-guided intersection and has no lane information. However, the present invention is not limited to this example. Such an intersection may be extracted. Also, an example has been described in which the route bar 90 of the second embodiment does not display an intersection that is a non-guided intersection and has no lane information. However, such an intersection may be displayed in, for example, gray or another color.
[0059]
Further, in the above-described embodiment, an example has been described in which the lane information of the intersection information table is extracted from the guidance table. However, the present invention is not limited to this. If the lane information is stored in other map data, it may be extracted from the map data.
[0060]
In the above embodiment, the control program executed by the control device 11 of the navigation device 1 has been described as being stored in the ROM (not shown). However, the present invention is not limited to this. The control program and its installation program may be provided on a recording medium such as a DVD. In this case, it may be mounted on the DVD drive 12 as in the case of the recording medium 3 in FIG.
[0061]
Further, these programs can be provided via a transmission medium such as a communication line represented by the Internet. That is, it is also possible to convert the program into a signal on a carrier wave that carries the transmission medium and transmit the signal. The navigation device of the present embodiment can be connected to a communication device 2 such as a mobile phone via a communication I / F 16. Therefore, it suffices to connect to the Internet 4 via the mobile phone 2. It connects to a server that provides a control program via the Internet 4.
[0062]
Further, the navigation program may be realized by executing the above-described control program on a personal computer.
[0063]
Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments that can be considered within the scope of the technical idea of the present invention are also included in the scope of the present invention.
[0064]
【The invention's effect】
Since the present invention is configured as described above, it has the following effects. Not only when the vehicle is approaching the guidance intersection, the lane condition of the intersection within a predetermined distance from the current position can always be grasped. That is, the lane condition of the intersection on the route can be grasped regardless of whether the intersection is a guided intersection or a non-guided intersection.
[Brief description of the drawings]
FIG. 1 is a block diagram of a navigation device according to an embodiment of the present invention.
FIG. 2 is a diagram of a one-screen display for explaining a display related to lanes.
FIG. 3 is a diagram of a two-screen display for explaining a display related to a lane.
FIG. 4 is an enlarged view of a display related to lanes.
FIG. 5 is a diagram showing a table for selectively using display colors depending on whether there is a guided intersection, a non-guided intersection, or whether there is lane information.
FIG. 6 is a diagram showing a control flowchart relating to lane display.
FIG. 7 is a diagram showing a configuration of an intersection information table.
FIG. 8 is a diagram illustrating a control flowchart for controlling whether to perform one-screen display or screen display.
FIG. 9 is a diagram of one screen display for explaining display of a lane and display of a route bar.
FIG. 10 is a diagram of a two-screen display for explaining a display related to a lane and a display of a route bar.
FIG. 11 is a diagram illustrating a control flowchart of control for displaying a route bar.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 navigation device 2 communication device 3 recording medium 4 internet 11 control device 12 DVD drive device 13 current location detection device 14 input device 15 memory 16 communication interface 17 monitor

Claims (8)

A navigation device,
Route search means for finding a route from the starting point to the destination;
Current position detecting means for detecting the current position of the vehicle;
Route guidance means for performing route guidance based on the determined route,
Regarding a plurality of intersections that are intersections on the route and are within a predetermined distance from the current location of the vehicle, regardless of a guidance intersection that performs the route guidance or a non-guide intersection that does not perform the route guidance, A navigation device for displaying a display on a lane on a display device. The navigation device according to claim 1,
The navigation device, wherein the route guidance means displays, in a display related to the lane, a display that can identify the guidance intersection or the non-guide intersection. The navigation device according to claim 2,
The navigation device, wherein the route guidance unit changes a display mode of a lane other than the lane to be route-guided in the display related to the lane, depending on the guided intersection or the non-guided intersection. The navigation device according to claim 2,
The navigation device, wherein the route guidance means changes a display mode of a display other than a lane in the display related to the lane, depending on the guided intersection or the non-guided intersection. The navigation device according to any one of claims 3 to 4,
The navigation device, wherein the display mode is a display color. The navigation device according to any one of claims 2 to 5,
The navigation device, wherein the guidance intersection for performing the route guidance is an intersection where the route turns right or left, and the non-guide intersection where the route guidance is not performed is an intersection where the route goes straight. The navigation device according to any one of claims 1 to 6,
The route guidance unit displays, for a predetermined number of intersections within a predetermined distance from the current location of the vehicle, by arranging the lanes from the top of the screen of the display device in descending order from the current location of the vehicle, and displaying the lane. Wherein the display relating to the lane moves from top to bottom as the current location of the vehicle moves. The navigation device according to any one of claims 1 to 7,
The navigation device, wherein the route guidance means visually displays a distance to the intersection in a display related to the lane.

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