JP2001165687A - Guiding method to building entrance for navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To search for and display a guidance route to the entrance position of a building when the building is set as a destination and to intelligibly display the entrance of the building when the building or the destination is approached during the traveling of the guidance route. SOLUTION: Entrance position information on buildings is included in a database memorizing information on the buildings. When a building BLD is set as a destination, a route RT for guiding to the entrance position ENT of the building BLD is searched for and displayed. When the distance from the position of an own vehicle to the building BLD at the destination becomes less than a specified value, a map around the building is magnified while the entrance position ENT of the building and the guidance route RT for guiding to the entrance position ENT are displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of guiding a property entrance of a navigation device, and more particularly to a method of setting a property database as a destination by including property entrance position information in a property database provided in the navigation device. The present invention relates to a property entrance guidance method for a navigation device that searches for and displays a route leading to the entrance position of the property.

[0002]

2. Description of the Related Art A navigation device that provides guidance for driving a vehicle so that a driver can reach a desired destination is disclosed in Japanese Patent Application Laid-Open Publication No. H11-27138.
CD-ROM, DVD-ROM by detecting the position of the vehicle
The map data around the vehicle position is read out from a storage medium such as the above, and a map image is drawn on a display screen, and a vehicle position mark (own vehicle position mark) is drawn at a predetermined position on the map image. Then, as the current position changes due to the movement of the vehicle, the vehicle position mark on the screen is moved, or the vehicle position mark is fixed at a predetermined position such as the center of the screen and the map is scrolled, and the vehicle position mark is always displayed. The surrounding map information can be understood at a glance. Such a navigation device has a route guidance function of searching for a guidance route from a departure point to a destination, displaying the guidance route on a map, and performing intersection guidance (enlarged intersection view, display of traveling direction).

[0003]

When a desired property is set as a destination, a navigation device searches for a guide route to the vicinity of the property and displays the guide route. In this case, since there is no information on the entrance position of the property in the database that stores the property information such as the location of the property, even if the route to the destination property is searched, the property is guided to a position different from the entrance of the property. May have been unkind. As described above, the first object of the present invention is to provide an object when a property is set as a destination.
The purpose is to search for and display a route leading to the entrance position of the property. A second object of the present invention is to display the entrance of a property in an easy-to-understand manner when approaching a property as a destination during traveling on a guidance route. A third object of the present invention is to display a location of a property such that an entrance is present when setting a destination.

[0004]

According to the first object of the present invention, a database for storing property information includes entrance position information of the property, and when the property is set as a destination, This is achieved by searching for and displaying a route leading to the entrance position of the vehicle. According to the second object of the present invention, when the distance from the vehicle position to the destination property becomes less than a certain value during traveling on a guided route, the map around the property is enlarged and the entrance position of the property is increased. And displaying the guidance route leading to the entrance position. Further, according to the present invention, when the distance from the vehicle position to the destination property becomes less than a certain value during traveling on a guided route, the periphery of the property is enlarged and the property is made three-dimensional. This is achieved by rotating the display image so that the entrance position is visible and displaying the entrance image. According to the third aspect of the present invention, when a destination is set, the periphery of the property is enlarged, the property is displayed three-dimensionally, and the display image is rotated so that the property entrance position is visible. Achieved by displaying.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (A) Schematic Description of the Present Invention FIG. 1 is a first schematic explanatory view of the present invention, in which the distance from the position of the vehicle to the property at the destination is less than a certain value during a guided route. It is a display example in the case of becoming. In the figure, RD1 and RD2 are roads, BLD is a target property, and ENT is a target property BLD.
Is the guidance route to the entrance position. In the navigation device of the present invention, the database for storing the property information includes the entrance position information of the property, and at the time of the search for the guidance route, the entrance position information is used to search for the guidance route to the entrance of the property as the destination. ,indicate. Then, when the own vehicle position approaches a certain distance to the destination property during the guide route traveling, a map around the property BLD is enlarged and displayed, and the entrance position ENT of the property and guidance for guiding to the entrance position are displayed. The route RT is displayed. With this, when a property is set as a destination, a route that leads to the entrance position of the property can be searched and displayed, and when approaching the property at the destination when traveling on a guidance route, the entrance of the property can be easily identified. Can be displayed.

FIG. 2 is a second schematic explanatory view of the present invention.
This is the case of destination setting. In the figure, CSR is a cursor, B
LD is a target property, RD1 and RD2 are roads, PM is a menu displayed when the target property is selected, and ENT is an entrance position of the target property BLD. At the time of setting a destination by pinpoint search of a telephone number or the like, when a target property is set, the target property BLD (FIG.
(A)) is instructed, and the menu PM is displayed. Then, when you select the entrance guide in the menu PM,
The map near the property BLD is enlarged and displayed, and a three-dimensional perspective view (oblique right perspective view) of the property BLD is displayed (FIG. 2).
(B)). At this time, the property entrance position ENT is changed to the property BL.
If it is hidden behind D and cannot be seen, the property entrance position ENT
The displayed image is shown in FIG.
(C), rotated and displayed as shown in FIG. Thereby, at the time of setting the destination, it is possible to display so as to know at which position in the property the entrance exists.

FIG. 3 is a third schematic explanatory view of the present invention.
This is a case where the vehicle is traveling on a guidance route. In the figure, CM is a vehicle position mark, BLD is a target property, RT is a guidance route to the target property, and ENT is an entrance position of the target property BLD.
When the vehicle CM (FIG. 3A) is traveling on the target property guidance route RT and the own vehicle CM approaches a certain distance to the target property BLD, as shown in FIG. 3B. In addition to the enlarged display, the target property BLD is displayed three-dimensionally, and the vehicle position CM and the guidance route RT to the target property are displayed. Next, the display image is rotated and displayed as shown in FIGS. 3C and 3D so that the property entrance position ENT (FIG. 3D) can be seen, and the route to the property entrance position ENT is displayed. The RT and the vehicle position CM are displayed. This makes it possible to display the entrance in an easy-to-understand manner even when the entrance to the destination is in the shadow of the destination when approaching the destination destination during the guided route.

(B) Embodiment of the present invention (a) Navigation device FIG. 4 is a block diagram of a navigation device according to the present invention. In the figure, reference numeral 11 denotes a map storage medium for storing map information, for example, a CD-ROM, 12 denotes a CD-ROM control unit for controlling reading of map information from the CD-ROM, and 13 denotes a position measurement for measuring the current position of the vehicle. Device, a vehicle speed sensor that detects the moving distance, an angular velocity sensor that detects the moving direction,
It is composed of a GPS receiver, a position calculation CPU and the like. 14 is a map information memory for storing map information read from the CD-ROM, 15 is a remote controller for performing menu selection operation, enlargement / reduction operation, manual map scrolling, etc., 1
Reference numeral 6 denotes a remote control interface.

Reference numeral 17 denotes a processor (CPU) for controlling the entire navigation apparatus, 18 is a ROM for storing various programs (guidance route search processing program, etc.), 19 is a RAM for storing processing results, and 20 is information on the property and information on the property. Property database storing entrance location information,
21 is a display controller for generating a map image,
Reference numeral 22 denotes a video RAM for storing a map image generated by the display controller; 23, a menu generation unit for generating a menu image; 24, a guidance route generation unit;
The processing result of the guidance route search processing program stored in 19 is used. 25 is a mark generating unit for the position of the vehicle, etc., 2
6, an image synthesizing unit for synthesizing and outputting various images; 27, a display device for displaying images output from the image synthesizing unit;
Is a bus.

(B) Property Database The property database stores detailed property information such as the location of the property and the entrance position in association with the property name in the map information stored in the CD-ROM 11. That is, FIG.
As shown in (a), the property database has a hierarchical structure, and the property database LDB1 stores the property name, the property position, the entrance position, and the image pointer for each property, and stores the property in the three-dimensional image database LDB2. Stores three-dimensional image generation data, that is, data for three-dimensionally displaying the article. FIG. 5B is an example of data representing a plane figure of a property or the like. The figure vertices are represented by latitude and longitude information, and attributes such as height information are included so that the figure can be displayed three-dimensionally. I have. For example, FIG.
And height information for (X1, Y1) to (X4, Y4) is T1, and (X4, Y4) to (X4)
7, Y7), if the height information is T2,
1, it is possible to display three-dimensionally at a height corresponding to T2.

The three-dimensional display of the article is performed as follows. That is, as the property height information Ti increases, the height direction compression rate α is increased, and the property plane shape is increased to a height H (= Ti · α) obtained by multiplying the property height information by the compression rate. From the ground. For example, the height of the property is classified into three categories of 0 to less than 30 m, 30 to less than 90 m, and 90 m or more, and the height direction compression ratio of each section is α1, α
2, α3, and the compression ratio increases as the height information increases (α1 <α2 <α3). In this way, even if the actual height information of the property is large, the property does not protrude from the screen, and even if the height information is small, the property can be displayed three-dimensionally at an appropriate height. FIG. 6 is a display example of a property in consideration of the above, and (a) shows a case where the height of the property is 0 to 30 m.
(B) and (c) are each 3
This is an example in which a property of 0 m to less than 90 m and 90 m or more is displayed.

(C) Display flow chart at the time of route guidance to the property entrance FIG. 7 is a display flowchart of route guidance to the property entrance according to the present invention. The navigation device displays a destination setting screen by pinpoint search of a telephone number or the like (step 101). Next, a map around the target property is displayed, and a menu for the property is displayed (step 10).
2) The user performs a destination determination operation from the displayed menu (step 103). Next, it is checked whether or not the entry position information exists in the data of the target property selected by the user (step 104). If not, a route to the target property is searched (step 1).
09). On the other hand, if the entrance position information exists, a guide route to the entrance position of the target property is searched (step 1).
05). Next, the routes calculated in steps 105 and 109 are displayed on the screen, and route guidance is started (step 106). When the route guidance is started, the own vehicle position is grasped, and it is determined whether or not the own vehicle position has approached the target property (step 107). The processing after step 106 is repeated. On the other hand, when the own vehicle position approaches the target property, the guidance route is enlarged and displayed together with the map image around the property (step 108, see FIG. 1). In order to enlarge the display, first, the shape of the property and the position of the property (the position of the mark x) as shown in FIG.
(B)) The shape of the property is adjusted to the size of the map scale. Then, a property shape having a size corresponding to the map scale is superimposed on the property map at the property position, and an enlarged view as shown in FIG. 8C is created and displayed.

(D) Display flowchart when setting a destination FIG. 9 is a display flowchart when setting a destination according to the present invention. The navigation device displays a destination setting screen by pinpoint search of a telephone number or the like (step 20).
1). Next, a map around the target property BLD (FIG. 2A) is displayed, the property BLD is displayed three-dimensionally, and a menu PM for the property BLD is also displayed (step 202). Then, it is checked whether or not entrance position information exists in the property data (step 203). At this time, if the entrance position information does not exist in the data of the property BLD, the map screen display at the time of setting the destination is continued (step 210). On the other hand, if the entrance position information exists, it is checked whether the user has selected the entrance guidance from the menu PM (step 204). If the entrance guidance is not selected, the processing after step 210 is performed, and if it is selected, an enlarged view around the destination is displayed and a three-dimensional perspective view of the target property is displayed (step 205, FIG. 2B). . Note that the three-dimensional perspective view is a right oblique perspective view of the target property BLD. Next, it is determined whether or not the entrance position of the article BLD displayed in a three-dimensional manner is shaded (step 206). To determine whether the entrance position is shaded or not, first determine the point A at the upper left vertex of the planar shape of the property,
Point, point C, and point D. In FIG. 2B, the side contacting the road RD1 is the side CD, and the side contacting the road RD2 is the side DA. Then, since the target property BLD is a diagonally right perspective view, if the entrance position is on the AB side or BC side, the entrance position will be visible, and if it is on any other side, , The entrance is not visible. From step 206, if the entrance position is not shadowed by the property BLD and is visible, the entrance position and the route display to the entrance position are continued as they are (step 21).
1). On the other hand, if the entrance position is in the shadow of the property BLD and cannot be seen, the display image is rotated as shown in FIGS. 2C and 2D (step 207). Next, it is checked whether a predetermined time has elapsed since the display of the entrance position, and if not, the display of the entrance position is continued (step 208). On the other hand, when a predetermined time has elapsed, the displayed enlarged view is deleted, and the display returns to the destination setting screen (step 209).

(E) Display Flowchart for Traveling on a Guided Route to a Property Entrance FIG. 10 is a display flowchart for traveling on a guided route to a property entrance in the present invention. The navigation device
The route guidance to the target property entrance set by the user is started (FIG. 3A) (step 301). Next, it is checked whether or not the distance from the vehicle position CM to the target property BLD is constant, for example, 300 m or less (step 302). If the distance to the property BLD is not 300 m or less, the normal The guidance route display is continued (step 308), and the processing from step 302 onward is repeated. On the other hand, when the position of the vehicle becomes 300 m or less to the property, an enlarged view (FIG. 3B) around the property BLD is displayed (step 303). Next, a three-dimensional display,
It is determined whether the entrance position of the property BLD is shaded or not (step 304). Entrance location is the property BLD
If it is not shadowed and can be seen, the enlarged view display is continued (step 309), and step 306 is performed.
The following processing is performed. On the other hand, if the entrance position is in the shadow of the property BLD and cannot be seen, FIG.
As shown in (d), the display image is rotated (step 30).
5). Next, the vehicle position CM is the entrance ENT of the property BLD.
It is checked whether or not it has arrived in the vicinity (step 306). If it has not arrived, the processing from step 306 onward is repeated. On the other hand, if it arrives, the enlarged view is deleted and the route guidance is terminated (step 307).

[0015]

As described above, according to the present invention, when a property is set as a destination, a route that leads to the property entry position is searched when a property information is stored in a database storing property information. Since it is displayed, the entrance of the property can be displayed so as not to be mistaken. According to the present invention,
When the distance from the vehicle position to the destination property becomes less than a certain value during the guidance route, the map around the property is enlarged, and the entrance position of the property and the guidance route for guiding to the entrance position are displayed. Therefore, when approaching the destination, which is the destination during the guided route, the entrance of the destination can be displayed in an easy-to-understand manner. In this case, according to the present invention, the article is displayed three-dimensionally, and the display image is rotated and displayed so that the entrance position can be seen. At times, the entrance of the property can be displayed in a more understandable manner. According to the present invention, when the destination is set, the periphery of the property is enlarged, the property is displayed three-dimensionally, and the display image is rotated and displayed so that the property entrance position can be seen. At the time of setting, it can be displayed so as to know at which position in the property the entrance exists.

[Brief description of the drawings]

FIG. 1 is a first schematic explanatory diagram of the present invention.

FIG. 2 is a second schematic explanatory diagram of the present invention.

FIG. 3 is a third schematic explanatory diagram of the present invention.

FIG. 4 is a configuration diagram of a navigation device of the present invention.

FIG. 5 is an explanatory diagram of a property database.

FIG. 6 is an explanatory diagram of a three-dimensional display of a property.

FIG. 7 is a flow chart of route guidance display up to a property entrance.

FIG. 8 is an explanatory diagram illustrating an enlarged display around a property.

FIG. 9 is a display flowchart when a destination is set.

FIG. 10 is a display flowchart when a guided route to a property entrance is running.

[Explanation of symbols]

 BLD ··· Target property ENT ·······················································································································································

Claims (4)

[Claims] 1. A database for storing property information such as a property name and a property location, a predetermined property is set as a destination, a guidance route to the property location is searched, and a vehicle is guided along the guidance route. In the method for guiding an entrance of a property of a navigation device having a route guidance function, the database may include entrance position information of the property, and when the property is set as a destination, a route to be guided to the entrance position of the property is searched. And displaying the property entrance. 2. When traveling on a guidance route, when the distance from the own vehicle position to a destination property becomes less than a certain value, the periphery of the property is enlarged, and the entrance position of the property and guidance for guiding to the entrance position. The method according to claim 1, further comprising displaying a route. 3. When the destination is determined, the periphery of the property is enlarged, and the property is displayed three-dimensionally, and the display image is rotated and displayed so that the property entrance position can be seen. 2. A method for guiding a property entrance of a navigation device according to claim 1. 4. When the distance from the vehicle position to the destination property becomes less than a certain value during traveling on a guided route, the periphery of the property is enlarged, the property is displayed in three dimensions, and the entrance position is displayed. The article entrance guidance method for a navigation device according to claim 1, wherein the display image is rotated and displayed so as to be visible.