JPH09159481A - Map display device, navigation apparatus and medium with stored computer program for processing of map information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a map display device in which a house map and a road map are displayed so as to be changed over according to a prescribed condition. SOLUTION: When a destination is selected by a list input, a house map which contains the destination is displayed automatically on a display 33. When an image range in which the destination, a present position and the center of a cursor are used as the center of a screen is deviated from the coordinate range of the house map, the house map is not displayed, and a road map is displayed instead. In addition, a map image which is displayed on the display 33 can be changed over manually to either the house map or the road map. When the present position is brought close to a place within a prescribed distance from a registered destination, the house map is displayed automatically on the display 33. When a vehicle is stopped or running at a prescribed speed or lower, the display of the house map is inhibited. When the road map is changed over to the house map, the reduced scale of the road map is stored, and, when the house map is changed over again to the road map, the road map is displayed at the stored reduced scale.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a map display device,
The present invention relates to a medium storing a navigation device and a computer program for map information processing.

[0002]

2. Description of the Related Art As a conventional map display device, there is a vehicle navigation device. Using this navigation device and the road map formed based on the road information, the route to the destination is calculated by detecting the current position and setting the destination, and based on the calculated route It guides the route to the ground.

The map displayed on the display device for the purpose of providing route guidance while the vehicle is traveling displays the minimum information in order to improve the visibility of the current position and the road during traveling. It was a thing.

[0004]

However, in the conventional navigation device, since there is little information to be displayed, there is little information to confirm the destination or the point of the specific facility desired by the user. Therefore, it is complicated to determine the corresponding point. In addition, with conventional map information composed of road information, it is difficult to recognize where the destination is, even though it has reached the vicinity of the destination according to the route guidance. However, there was a problem that I overlooked the destination and took time to reach the destination.

Therefore, an object of the present invention is to provide a navigation device that can easily display a guide while driving and can easily determine a point.

[0006]

In order to solve the above problems, the present invention switches the display between a residential map and a road map according to a predetermined condition. As a result, it becomes possible to switch between the residential map and the road map according to various conditions such as when the visibility of the route is required or when the confirmation of the point is required.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

1. Summary of Examples The examples described below store a road map formed based on road information and a residential map formed based on information about a building such as the shape of the building (road data file). , So that the map can be switched as needed (the map switching process of FIG. 11, step 90 of FIG. 10,
91, 93, 95, 97, steps 262, 2 in FIG.
63, 265, 275, 277).

In the embodiments described below, information storage means (road data file) for storing map information, current position detection means for detecting the current position of the vehicle (step 50 in FIG. 8), and destination. A route is calculated based on input means (destination designation processing in FIG. 9) for inputting information necessary for route calculation, etc., and information input by the input means and map information stored in the information storage means. Route calculating means (step 52 in FIG. 8), and route guiding means for performing route guidance based on the route calculated by the route calculating means and the current position detected by the current position detecting means (step in FIG. 8). 53), display means (display 33) for displaying the map information read from the information storage means and the route calculated by the route calculation means, and map information displayed on the display means. Map switching process of the map information switching means (11 to switch the step 90 in FIG. 10,
91, 93, 95, 97, steps 262, 2 in FIG.
63, 265, 275, 277), and the information storage means stores road map data formed based on road information, a road map information storage means (road map data file), a shape of a building, and the like. And a house map information storage unit (house map data file) for storing house map data formed on the basis of the information about the building, wherein the map information switching unit determines a predetermined condition to The map information created by reading the road map data from the road map information storage means and the map information created by reading the home map data from the housing map information storage means are switched and output to the display means. It is also a navigation device.

[0009] 2. Overall Circuit FIG. 1 shows the overall circuit of the navigation device. The central processing unit 1 controls the operation of the navigation device and performs calculations by the CPU 2. The flash memory 3 has a CPU
The system program executed in 2 and the programs and various parameters required for display control and voice guidance control are stored. The RAM 4 stores externally input data, various parameters used for calculation, calculation results, and the like.

The ROM 5 stores a program for operating the information storage device 37 and a program for rewriting the program of the flash memory 3. This R
The OM 5 may store display data for route guidance and map display, programs for display output control and voice output control, various parameters, and the like. The clock 6 generates time information. The sensor input interface 7 receives detection data from the absolute azimuth sensor 21, the relative azimuth sensor 22, the distance sensor 23, and the vehicle speed sensor 24 of the current position detection device 20, and sends it to the CPU 2. The communication interface 8 transmits / receives various data to / from the device connected to the data bus 28.

The image processor 9 reads out the image data stored in the image memory 10 and outputs the image data to a display 33 capable of displaying an image such as a CRT, a liquid crystal display or a plasma display. The image memory 10 stores the image data displayed on the screen of the display 33, and sends and receives the image data to and from the image processor 9. The image processor 9 converts the map data into display data according to a command from the CPU 2 to form image data to be displayed on the screen of the display 33. At this time, in order to scroll the screen, the display 33
An image around the screen displayed on is also formed and stored in the image memory 10. The ROM 5 stores voice waveform data in which synthetic voices or voices for guidance voices are recorded, and the voice waveform data required by the CPU 2 is read out and sent to the voice processor 11. The voice processor 11 forms a voice waveform of an analog waveform from the input voice waveform data and sends it to the speaker 13.

The current position detecting device 20 is a device for obtaining data for detecting the current position of the vehicle. The absolute direction sensor 21 is, for example, a geomagnetic sensor that detects geomagnetism and outputs data indicating the north-south direction that is the absolute direction. The relative azimuth sensor 22 outputs data indicating the deviation in the traveling direction of the vehicle with respect to the absolute azimuth detected by the absolute azimuth sensor 21, and for example, a gyro device such as an optical fiber gyro or a piezoelectric vibration gyro, or steering of wheels. It is a steering angle sensor that detects an angle. The distance sensor 23
The digital counter outputs data indicating the distance traveled by the vehicle, and is, for example, a digital counter linked with a distance meter. The speed sensor 24 generates a voltage signal or a digital signal proportional to the traveling speed of the vehicle.

The GPS receiver 25 is a GPS (Global P
ositioning System) signal and outputs the position data. The beacon receiving device 26 receives GPS correction data and a beacon from an information providing system such as VICS (road traffic information communication system) and outputs the received data. In the data transmitting / receiving device 27, information is transmitted / received to / from the information providing system using bidirectional communication such as cellular phone, FM multiplex signal or telephone line. For example, like ATIS (traffic information service),
The current position information is transmitted / received to / from the information providing system.

The input / output device 30 inputs information necessary for setting a destination such as a starting point, a destination, and a passing point, and outputs guidance information during a navigation operation. Display 3
A transparent touch panel 34 is provided on the screen of No. 3. This touch panel has transparent touch switches arranged in a planar matrix. The printer 35
Various types of information such as maps and facility guides output via the communication interface 8 are printed. The information storage device 37 is connected to the I / O data bus 28 via the data transmission / reception unit 39, and the programs, data, etc. described later are read out.

FIG. 2 shows the storage contents of the information storage device 37. Disk management information is stored in the information storage device 37. This information is the data described below, information about the program, for example, version information of the program.

The information storage device 37 stores a navigation processing program executed by the CPU 2 according to a flowchart described later and a program related to other processing. These programs are read from the information storage device 37 (external storage means / medium), written and stored (installed / transferred / copied) in the flash memory 3 (internal storage means / medium).

This installation (transfer / copy) is automatically executed when the information storage device 37 is set in the navigation device, or automatically when the power of the navigation device is turned on, or by the operator. It is executed by an operation. This information storage device 37 can be replaced with another information storage device 37, whereby the programs and data are replaced with newer or latest programs. As a result, this replacement provides a modern navigation system.

The information storage device 37 (database) includes:
Display guide data as map data, intersection data, node data, road data, photo data, destination data, guide point data, detailed destination data, destination reading data, house shape data, and other data necessary for navigation operation , Voice guidance data, simplified guidance route image data, etc. are stored. This information storage device is composed of, for example, a recording medium such as an IC memory (card), a CD-ROM / RAM, an optical disk, a magnetic disk, and a reading device thereof.

The map data file comprises a road map data file in which road map data such as a national road map is stored and a house map data file in which house map data capable of recognizing the shape of a building is stored. ing. The road map and the residential map may be composed of a plurality of maps of different scales for the same area, or may be composed of a single required scale. In this embodiment,
The road map and the residential map have a plurality of pieces of map information with different scales as needed for each region, and for the residential map, a device that stores only specific areas as map information will be described. The road map displays the road network, characters, symbols, figures, etc. indicating the locations of major buildings, facilities, etc., and geographical information such as map symbols, geographical names such as municipalities, etc.

In the residential map (building shape map), the house shape, that is, the shape of the actual building is displayed, and further geographical information is displayed. This house shape represents external information of a building, that is, the shape of an actual building, facility, house, road, river, or the like.
This house shape is displayed, for example, in a ratio almost the same as the size ratio of the actual building, or in a plan view of a building, a site, etc. or a perspective view of a building, etc. The three-dimensional appearance shape of the above, and the two-dimensional shape and the three-dimensional appearance shape thereof are represented by the perspective method. The house shape also includes external features such as the number of floors, area, height, advertisement, and color of the building. Although a “house shape” is used for convenience of explanation, the house shape also includes a place other than the house such as a site of a facility, a road, or a river. These definitions are the same in the following description.

For example, FIG. 3 is an example of a screen displayed on the display 33 based on the most enlarged scale map data. On a road map display screen based on road data, roads are distinguished by lines having different thicknesses and colors. In addition, a symbol mark is displayed at the coordinates where the main building or facility exists. Although not shown, the names of buildings and facilities, names of main roads, district names, road regulation marks such as one-way streets, etc. are displayed.

On the other hand, the residential map is, for example, as shown in FIG. 4, a map of a scale further enlarged than the scale of the road map data of the most enlarged scale of FIG. 3, or a map of the same scale. The ratio of the width of each road on this residential map is the same as the ratio of the actual width of the road, and there are also indications such as sidewalks and pedestrian bridges. Furthermore, on the residential map, the display of signalized intersections,
Although map symbols and illustrations are omitted, names of buildings and facilities, names of main roads, district names, road regulations, etc. are displayed.
The house map data is data for displaying such a house map on the entire surface or a part of the display 33.

The intersection data file stores data relating to the intersection such as the position and name of the intersection. The node data file stores data of nodes set on the road. The road data file stores data about roads such as the position and type of roads, the number of lanes, and the connection relationship between the roads. The photograph data file stores image data of photographs showing various facilities, tourist spots, places where visual display is required such as major intersections.

[0024] The destination data file includes destinations such as locations and names of places and facilities that are likely to be destinations of major tourist destinations, buildings, companies or establishments listed in the telephone directory. Data is stored. The guide point data file stores guide data of a point where guidance such as the contents of a guide display plate installed on a road and guidance of a branch point is requested. The detailed destination data file stores more detailed data regarding the destinations stored in the destination data file. The destination reading data file stores list data for searching the destination stored in the destination data file by reading the destination.

In the house shape data file, the shape data of the house shape for displaying the house shape and the identification data regarding each house shape are stored corresponding to the house map data. Other data files include address list data files for searching the above destinations from addresses, phone number list data files for searching the above destinations by phone numbers, and registration by users such as business partners. There are data files etc. regarding the destinations that have been selected. The house shape data file stores internal information of the building, that is, internal characteristics of the building. In addition to the above-mentioned telephone number and address, the internal characteristics are name, postal code, field, industry, brand, item, price, achievement or achievement, etc.

3. Data Group FIG. 5 shows a part of the data group stored in the RAM 4.
In the external data GD, all or part of the data stored in the information storage device 37 is copied. The current position data MP is the current position data of the vehicle detected by the current position detection device 20. Absolute direction data ZD
Is data indicating the north-south direction obtained based on the data from the absolute azimuth sensor 21. Relative azimuth data θ
Is an angle formed by the traveling direction of the vehicle with respect to the absolute azimuth, which is obtained based on the data from the relative azimuth sensor 22. The mileage data ML is the mileage of the own vehicle obtained based on the data from the distance sensor 23. The current position information PI is data regarding the current position input from the beacon receiving device 26 or the data transmitting / receiving device 27. The VICS data VD and the ATIS data AD are VICS or ATIS data input from the beacon receiving device 26 or the data transmitting / receiving device 27. The registered destination data TP is data regarding the destination such as the position and name of the destination registered by the user. Guidance route data M
W is data indicating an optimum route or a recommended route to the destination searched in the route search process (step 52) described later. The traveling speed data MV is obtained by the speed sensor 2
It is the traveling speed of the vehicle detected in 4. The guidance start point data SP is coordinate data on the map of the start point of the navigation operation determined in the route search process (step 52). The final guidance point data EP is coordinate data on the map of the end point of the navigation operation, which is determined in the route search process (step 52). The house map display flag JF is a flag indicating that it is required to display the house map on the display 33. Scale data S
D is data indicating the scale of the road map displayed on the display 33. The road map display flag DF is a flag indicating that it is required to display a road map on the display 33. Destination distance data MD
Is data on the distance from the current position to the registered destination TP. The manual display flag MF is a flag indicating that it is required to display the house map on the display 33 by the manual operation of the user. The house map display flag HF is a flag indicating whether or not a house map is displayed on the display 33. The data enclosed by the broken line will be described later.

4. House Shape Data As described above, the house map data is provided for the municipalities of major cities, and the house map number is attached to each area. The house shape data is classified according to the house map number, and the house shape data corresponding to the house map number stores shape data and identification data of each place. As described above, the house shape data is data in which the shape data of the house shape is associated with identification data of a place such as type data, adjacent road data, and detailed data. In the present embodiment, the shape data is data representing a planar shape of a section, a site, or a building in a planarly partitioned place such as a building or facility existing in the house map.

FIG. 6 shows house shape data of one area in the house shape data file. The house map number data corresponds to the number data of the house map data stored in the map data file. The data number data is the number N of house shapes existing in one area indicated by the house map number. Then, for each of the N house shape data, type data, shape data, adjacent road data, detailed data,
Other data is included. Of these, the shape data is external information of the building, and the data other than the shape data is internal information of the building.

The type data is not only data indicating the type of building such as public facilities such as government offices, schools, hospitals, private houses, condominiums, single-family houses, etc., but is also divided by boundaries such as roads, railways, rivers, etc. It also contains data that describes the type of location. The shape data is data in which the shape of a house shape is stored as a coordinate sequence, and includes coordinate number data for representing one house shape and coordinate data of each vertex of a planar shape.
For example, as shown in FIG. 7, when the house shape is a hexagon, the coordinates (X0, Y0) to (X5, Y5) of the vertices of the house shape.
Is coordinate data representing the house shape. The curve is approximately represented by a fine line segment and the coordinates of each vertex are used as coordinate data.

The adjacent road data is number data of roads adjacent to the house shape and coordinate data of nodes included in the adjacent roads. When there are a plurality of adjacent roads, the adjacent road data includes respective road number data and node coordinate data. The detailed data is data representing detailed contents regarding one house shape. For example, when the type of house shape is a multi-tenant building, the detailed data includes the name of the place, for example, the name of the building, the address data of the place, the floor data of the building, and the companies existing in the building. And the number data of department names and the content data of each company and department. The address data is data representing addresses such as prefectures, municipalities, chome, street addresses, numbers, large letters, and letters.

The content data includes name data such as company name and department name, telephone number data, classification data, and classification data. The division data is data indicating a room number or the number of floors. The classification data is data indicating the work content, and the classification is determined in accordance with, for example, the occupation classification in the telephone number book for each occupation. For example, gas stations, restaurants, convenience stores, parking lots, police boxes, pharmacies, banks, post offices, stations, hospitals, schools, movie theaters, halls / theaters, live houses, museums, libraries, museums, aquariums, plants Hall, amusement park, bowling
Skating rinks, disco clubs, karaoke, sports facilities, hotels / inns / accommodations, department stores / shopping centers, bookstores, CDs / videos, sports shops, miscellaneous goods /
Other categories such as gourmet, company (general), and so on are used. Other data include list image data for displaying detailed data on the display 33, stereoscopic display image data for stereoscopically displaying the shape of a house, data for notifying the characteristics of a building, coordinate data of a building entrance, and a building. It includes the coordinate data of the entrance of the parking lot attached to.

5. Overall Process FIG. 8 is a flowchart of the overall process executed by the CPU 2. This process starts when the power is turned on and ends when the power is turned off. This power on / off may be linked to the on / off of the engine start (ignition). CPU2, RAM at the start
4, initialization processing of the image memory 9 (step 5
5) is performed. Then, the current position acquisition process (step 50), the destination setting process (step 51), the route search process (step 52), the guidance / display process (step 53).
And other processing (step 54) is repeatedly executed.

In the current position acquisition process (step 50),
The current position of the vehicle is calculated based on the data sent from the current position detection device 20. In this calculation processing of the current position, the latitude and longitude are calculated from the data input from the GPS receiving device 25, and the latitude and longitude are stored in the RAM 4 as the current position data MP. The current position data MP is modified by the information about the current position input from the beacon receiving device 26 or the data transmitting / receiving device 27.

Further, based on the absolute azimuth data ZD, the relative azimuth angle data θ, and the traveling distance data ML, arithmetic processing for specifying the position of the own vehicle is performed. The own vehicle position obtained by this arithmetic processing is collated with the map data in the external data GD, and is corrected so that the current position on the map screen is accurately displayed. By this correction processing, the current position of the vehicle can be accurately obtained even when GPS signals cannot be received in the tunnel or the like.

In the destination setting process (step 51), a process of setting a destination in accordance with a destination setting operation by the user is executed. For example, when the user selects the destination setting mode, a road map centering on the current position is displayed on the display 33, and "list input" and "residential map input" are displayed in the road map image. Is displayed. When the user selects the list input mode, the display 33 displays the address, telephone number, genre,
A menu of search items such as names is displayed, so the user can select any item in the menu
The destination can be specified from the selected item. Further, detailed guidance of each destination can be displayed. In the housing map input mode, since the housing map around the current position is displayed on the display 33, the user moves the cursor to match the destination. In this case, the user moves the cursor so that the center of the cursor is within the desired house shape of the destination.

After the destination is determined, the user performs an operation for instructing the confirmation of the destination, and the data regarding the determined destination is stored in the RAM 4 as the registered destination data TP. This destination setting process (step 5
1) is jumped when a new destination setting operation is not performed.

This destination setting process (step 5)
In 1), when a house map is displayed, the house map is changed to a road map according to predetermined conditions. This map change is performed in response to a user's manual operation or automatically. For example, a road map is displayed when the traveling speed of the own vehicle is equal to or higher than a predetermined speed, and a residential map is displayed when the own vehicle stops or the traveling speed of the own vehicle is equal to or less than the predetermined speed. Also, when the house map is displayed, the screen is scrolled, and when the destination or the current position is out of the coordinate range of the house map, the road map is switched to.

In the route search process (step 52), a guide route to the destination is searched based on the registered destination data TP, the current position data MP, and the road data.
Then, the road number data of the roads forming the guide route are arranged according to the route from the starting point to the destination, and the arranged road number data is stored in the RAM 4 as the guide route data MW. For example, in the case of going from the starting point to the destination, the destination is designated by the user in the destination setting process (step 51), and the designated destination becomes the registered destination. The point on the guidance target road near the destination is the final guidance point EP. The current position is set as the departure point, and the current position or a point on the guidance target road close to the current position is set as the guidance start point SP. Then, an optimum route or a recommended route from the guidance start point SP to the final guidance point EP is automatically searched. For this guide route, roads that are consecutive from the guide start point SP can be selected from roads sandwiched between intersections, and at the shortest distance, many main roads can be used to reach the final guide point EP smoothly. It is such a route. Then, the road number data forming the guide route is stored in the RAM 4 as the guide route data MW. The guide route search process is equivalent to the process of calculating the road number forming the guide route by a predetermined calculation process based on the road data.

The next guidance / display process (step 5)
If the current position deviates from the guide route during the process of 3), the route search process (step 52) is executed in response to a predetermined switch operation or voice input, or automatically. Is reset. It should be noted that this route search processing (step 52) is jumped if there is no change in the guide route.

In the guide / display process (step 53), the guide route obtained in the route search process (step 52) is displayed in the image displayed on the display 33 by thick lines of red, blue, and other conspicuous colors. It Further, a current position mark indicating the current position and a destination direction mark indicating the direction of the destination with respect to the current position are displayed. Then, the guide is provided by the speaker 1 so that the vehicle can travel along the guide route.
A voice is pronounced from 3 or a guide is displayed on the map screen. In addition, the image for displaying the guide route is
It is a road map including geographical information such as roads and facilities around the current position, or a residential map around the current position. In addition,
Instead of the road map, a simplified guide route image may be displayed that omits the display of geographical information and displays only the minimum necessary information such as the guide route, the destination direction, and the current position.

When the vehicle approaches a predetermined guide point such as an intersection, an enlarged map near the guide point is displayed, the guide is displayed, and the voice guide is pronounced. The current position is corrected according to the progress of the vehicle, and the map screen is automatically scrolled as the current position moves. Further, in this guidance / display processing (step 53), the displayed image is changed from the road map or the simplified guide route image to the residential map, or the house map is changed to the road map or the simplified guide route image. To do. This map change is performed in response to a user's manual operation or automatically. For example, when the traveling speed of the own vehicle is equal to or higher than a predetermined speed, the road map or the simplified guide route image is displayed. It becomes possible to switch to a residential map. Further, when the current position coordinates deviate from the coordinate range of the residential map when the residential map is displayed, the road map or simplified guide route image around the current position is switched to. When the registered destination approaches within a predetermined distance, the road map display or the simplified guide route image may be switched to the residential map display.

6. Destination Setting Process FIG. 9 shows a flowchart of the destination setting process (step 51). First, it is determined whether or not the own vehicle is stopped (step 60). Specifically, the CPU 2 reads the traveling speed data MV from the RAM 4 and determines whether the traveling speed of the vehicle is 0 km / h or less than a predetermined speed. If it is determined that the vehicle is not stopped, the destination setting process (step 51) ends and the process proceeds to the next route search process (step 52).

On the other hand, if it is determined in step 60 that the vehicle is stopped, then it is determined whether or not it is a list input (step 62). In the list input operation, a destination setting operation is performed using a list corresponding to a destination search item. For example, this destination setting process (step 5
When 1) is started, the road map around the current position is displayed on the display 33, and the characters "list input" are displayed in this road map image. When the user touches this display, a touch signal is generated from the touch switch 34, and the list input flag is set according to this touch signal. At step 62, it is judged if this list input flag is set. In the case of list input, on the display 33, "address",
A menu for searching for destinations such as "phone number" and "genre" is displayed. When the user touches the display of the character of the desired item, a touch signal is generated from the touch switch 34, and a flag corresponding to each item such as an address flag, a telephone number flag, and a genre flag is generated according to the touch signal. Is set. In steps 64-68,
It is determined which flag is set.
Further, the character "return" is also displayed in the menu image, and when the character "return" is touched, the destination setting process (step 51) is terminated and the menu image is displayed on the display 33. The previous road map is displayed. The items to be input in the list are not limited to those described above.
You may include "personal name" etc.

When the user selects any item in the menu image, the input screen corresponding to the selected item is displayed on the display 33 (step 74). This is displayed based on the destination data file and the detailed destination data file. For example,
When the "address" item is selected, the user first selects the name of the prefecture, then the name of the municipality, and then the town name and chome, address, number, etc. The address is input by selecting the initials from the Japanese syllabary or sequentially selecting the prefecture name. The user inputs the address by touching on the displayed name or number display. When the item "telephone number" is selected, numbers 1 to 0 are displayed. The user touches the top of the number display and inputs the telephone number.
When the "genre" item is selected, a list of names of a plurality of genres is displayed. The user selects a desired genre from the displayed list and touches the display to input the genre. Then, on the display 33, a list of places corresponding to the selected genre is displayed arranged in the order of Japanese syllabary or by prefecture, and the user selects a desired place. When an input for selecting a specific place to be a destination is made in this manner, the user then designates a destination, and the designated destination is stored in the RAM 4 (step 76). Further, the coordinate data of the place that is a candidate for the destination stored in the destination data file is coordinate data of a specific one point that is predetermined for each place, such as the center coordinates of the site of the place. is there.

On the other hand, when the display of the residential map is requested when the destination setting process (step 51) is started (YES in step 78), the process for designating the destination in the residential map is performed. (Step 80). The process of step 80 is the same as that of step 76. The operation with the touch switch 34 is performed with other operation switches or the display 3
You may replace with the operation selected with the cursor displayed in 3.

7. Destination Designation Process FIG. 10 shows a flowchart of the destination designation process in steps 76 and 80. In this process, when the residential map can be displayed, the residential map is displayed on the display 33,
The place designated by the cursor is searched based on the house shape data, and the searched place is R as the registered destination TP.
Stored in AM4. Further, detailed information on the location designated by the cursor can be displayed on the display 33.

First, it is judged whether or not there is a residential map for designating a destination (step 90). In the case of step 76, it is judged whether or not there is house map data including the coordinates of the specific place selected in step 74,
In the case of step 80, it is determined whether or not there is house map data including the coordinates of the current position. Further, when the screen is scrolled, it is determined whether or not there is house map data including the coordinates of the center of the cursor. For example, if the house map data is in the range of a rectangle, it is calculated whether the coordinates of the specific place, the coordinates of the current position, or the coordinates of the cursor center are within the range surrounded by the coordinates of the four vertices of the rectangle. To be done.

If there is house map data including the coordinates of the specific place, the coordinates of the current position, or the coordinates of the center of the cursor, it is next determined whether or not a road map is displayed on the display 33 (step 91). ). This is a determination as to whether or not the house map display flag HF is off. If the road map is displayed, the scale of the displayed road map is stored in the RAM 4 (step 92). On the other hand, if the residential map is displayed on the display 33, this step 92 is skipped. Then, the CPU 2 reads the housing map data around the current position from the housing map data file and sends it to the image processor 9. As a result, the residential map whose current position is the center of the screen is displayed on the display 33 (step 93). And display 3
Since the house map is displayed in 3, the house map displaying flag HF is set to ON.

The display of the residential map is color-coded according to the type of place, such as white roads and vacant lots, gray personal and company buildings, and orange public facilities.
Of course, the criteria for color coding and the colors displayed are not limited. In the housing map displayed on the display 33, when a specific place is selected by the list input, the coordinates indicated by the coordinate data stored in the destination data for the selected specific place are displayed on the display 33. Is displayed so that it becomes the center of the screen.

When the house map is displayed on the display 33 (step 93), the cursor KL is displayed at the center of the screen of the display 33, so that the CPU 2 obtains the coordinates of the center of the cursor KL (step 94). Then, the house shape data file is searched for a location including the coordinates of the cursor center (step 99). For example, the CPU 2 calculates the coordinates of the cursor center KLC by calculating the center of the coordinate range of the image displayed on the display 33. Then, the house shape data included in the house map displayed on the display 33 is sequentially read from the house shape data file. Cursor center K using the shape data included in the read house shape data
The house shape data including LC is searched.

For example, from the shape data (X0, Y0) to (X5, Y5) of the house shape HS as shown in FIG.
The coordinates and Y coordinates and the minimum X and Y coordinates are determined. Then, it is determined whether or not the X coordinate (Xc) of the cursor center KLC is between the maximum X coordinate and the minimum X coordinate. This judgment is made by the X coordinate (Xc
) And the maximum X coordinate and the minimum X coordinate are compared. Similarly, the Y coordinate of the cursor center KLC (Y
It is determined whether or not c) is between the maximum Y coordinate and the minimum Y coordinate. Here, when the coordinates of the cursor center KLC are between the maximum X coordinate and the minimum X coordinate of the house shape HS, and between the maximum Y coordinate and the minimum Y coordinate,
Next, the inclination of the line segment connecting the coordinates of the cursor center KLC and the coordinates of the house shape HS is calculated. Then, it is determined whether or not the cursor center KLC is within the planar shape of the house shape HS by comparing the obtained inclination with the inclination of the line segment forming the outer circumference of the house shape HS. For example, the inclination of a line segment connecting the cursor center KLC and the coordinates (X2, Y2) and the line segment L2 connecting (X1, Y1) and (X2, Y2).
It is determined that the cursor center KLC is between the line segments L2 and L3 by comparing the magnitude of the slope of the line segment L3 with the slope of the line segment L3 connecting (X2, Y2) and (X3, Y3). The same calculation is performed for the other line segments L1, L4, L5, and L6, and it is determined that the cursor center KLC is within the range surrounded by the line segments L1 to L6 that form the outer circumference of the house shape HS. R.

When the house shape data including the cursor center KLC is searched in this way, it is next determined whether or not the display of detailed information has been requested (step 100).
This determination is performed, for example, by detecting whether or not the user has touched the character “detailed information” displayed on the display 33. When the display of the detailed information is requested, the list image data included in the house shape data retrieved in step 99 is read by the CPU 2 and sent to the image processor 9 (step 10).
2). As a result, the contents of the detailed data regarding the location at the center of the cursor are displayed on the display 33 in the form of a list. For example, when the house shape HS is a multi-tenant building including a plurality of stores and companies, the name of the store or company, the telephone number, the classification of the store or company, etc. for each room are displayed in the list. For example, when the user is looking for a "bookstore", even if the "bookstore" is on the second floor of the building, it can be confirmed by this list display, which is convenient. On the other hand, if the display of the detailed contents is not requested even after the lapse of the predetermined waiting time, the process of step 102 is skipped and the list display is not performed.

Next, it is judged whether or not a return is requested (step 104). For example, display 33
It is determined whether or not the character "RETURN" displayed in is touched by the user. When the return is requested, the destination specifying process (steps 76 and 80) is ended and the process proceeds to the next route searching process (step 52).
If there is no return request, it is then determined whether or not the destination registration operation has been performed (step 106). For example, the characters "register" are displayed on the screen of the display 33, and it is determined based on the output signal of the touch switch 34 whether or not the user has touched this display. When the registration operation is performed, the house shape data retrieved in step 99 is stored in the RAM 4 as registration destination data TP (step 108).

If the user does not perform the registration operation and changes the destination by moving the cursor KL, a screen scrolling process (not shown) is performed by an interruption, and the map image displayed on the display 33 is scrolled. To be done. The map image displayed on the display 33 is scrolled so that the cursor center KLC is always the screen center. Then, when the scrolling is stopped, the process returns to step 90, the coordinates of the cursor center KLC are obtained (step 94), and the house shape data including this cursor center KLC is searched (step 99). Then, when the display of the detailed information is requested, a list of the detailed information is displayed (steps 100 and 102). If the range of the house map displayed on the display 33 is interrupted by scrolling the screen, that is, if the range of the coordinates displayed on the display 33 is outside the edge coordinates of the house map data, step 90 The determination is NO, and the display is switched to the display of the road map with the coordinates of the cursor center KLC as the screen center (step 9).
7).

On the other hand, in step 90, if there is no house map data including the coordinates of the specific place, the coordinates of the current position, or the coordinates of the cursor center, then the display 3 is displayed.
It is determined whether or not the house map is displayed in 3 (step 95). This is a determination as to whether or not the house map display flag HF is on. Here, if the road map is already displayed, it is not necessary to switch the map display mode, and therefore the next step 96 is skipped. On the other hand, when the residential map is displayed, the mode is switched to the road map display mode. At this time, when the display mode of the road map is switched to the display mode of the residential map, the scale data S stored in the RAM 4 at step 92.
D is read (step 96).

Then, the CPU 2 reads the road map data around the current position from the road map data file of the scale corresponding to the scale data SD and sends it to the image processor 9. As a result, a road map having the coordinates of the specific place, the current position, or the center of the cursor as the center of the screen is displayed on the display 33 (step 9).
7). Then, since the road map is displayed on the display 33, the house map displaying flag HF is reset to off. When the road map is displayed on the display 33, the cursor KL is displayed at the center of the screen of the display 33, so that the CPU 2 obtains the coordinates of the cursor center KLC (step 98).

Next, it is judged whether or not a return is requested (step 104), and when the return is requested, the destination designating process (steps 76 and 80) is ended and the next route search is performed. Proceed to the process (step 52). If there is no request for return, it is determined whether or not the destination is registered next (step 106). If the registration operation is performed, the coordinates of the cursor center KLC searched in step 98 above are determined. The indicated position is stored in the RAM 4 as the registered destination data TP (step 108). When the registration operation is not performed and the user moves the cursor KL to change the designated position of the destination, the screen scrolling process is performed and the map image displayed on the display 33 is scrolled. Then, when the scrolling is stopped, the process returns to step 90, and the coordinates of the cursor center KLC are obtained (step 98). Further, if the house map with the cursor center KLC as the screen center can be displayed in the coordinate range displayed on the display 33 by scrolling the screen, the determination in step 90 is YES and the coordinates of the cursor center KLC are the screen center. The display is switched to the display of the residential map (step 93).

8. Map Switching Process FIG. 11 shows a flowchart of the map switching process (step 110) executed in the guidance / display process (step 53). In this process, a manual operation process (step 120), a destination proximity switching process (step 122), a house map switching process (step 124),
And other processing (step 126) is performed. In the manual operation process (step 120), the mode for displaying the residential map and the mode for displaying the road map are switched according to the manual operation by the user. In the destination proximity switching process (step 122), when the registered destination approaches within a predetermined distance, the road map display mode is switched to the residential map display mode. In the house map switching process (step 124), the traveling speed of the own vehicle becomes less than or equal to a predetermined speed, or the display of the house map is allowed when the vehicle stops, and the traveling speed of the own vehicle becomes more than or equal to the predetermined speed, or while traveling. In the case of, the display of the residential map is prohibited. Further, when the residential map around the current position displayed on the screen of the display 33 disappears, the road map is displayed. In other processing (step 126), switching between the display mode of the residential map and the display mode of the road map is performed based on the other switching conditions.

9. Manual Operation Process FIG. 12 shows the manual operation process (step 12 in FIG. 11).
It is a flowchart of 0). First, it is judged whether or not the switching is performed by the manual operation of the user (step 130). For example, the CPU 2 determines whether or not the switch of the screen display mode has been operated. Further, by operating the changeover switch, it is determined whether the display of the residential map or the display of the road map is requested (steps 132 and 14).
2). Here, if the display of a residential map is requested,
Next, it is determined whether or not the image displayed on the display 33 is a residential map (step 134). This is a determination as to whether or not the house map display flag HF is on. The house map display flag HF is set to ON when the house map is displayed on the display 33, and reset to OFF when the road map is displayed. Further, the house map displaying flag HF is reset to off in the initialization processing.

If the residential map has already been displayed, there is no need to switch the map display mode, and the manual operation process (step 120) ends. On the other hand, when the road map is displayed, the house map display flag JF
Is set to ON (step 136), and the road map display flag DF is reset to OFF (step 13).
8). The house map display flag JF is set to ON when displaying a house map on the display 33, and is reset to OFF when displaying a road map. In addition, the road map display flag DF is set to ON when the road map is displayed on the display 33, and is reset to OFF when the residential map is displayed. Further, in the initialization process, the house map display flag JF is reset to OFF and the road map display flag DF is set to ON.

When the house map display flag JF is set to ON and the other conditions are satisfied in the house map switching process (step 124) described later, the house map is displayed on the display 33. Then, the manual display flag MF is set to ON (step 14).
0). This manual display flag MF is a flag for storing that the display of the residential map is requested by the manual operation, and is reset to OFF when the display of the road map is requested by the manual operation (step 150).

On the other hand, if the user operates the display mode changeover switch to request the road map display mode, then it is determined whether the image displayed on the display 33 is a road map. It is determined whether or not (step 144). This is a determination as to whether or not the house map display flag HF is off. If the road map has already been displayed, there is no need to switch the map display mode, so the manual operation processing (step 120) ends. On the other hand, when the residential map is displayed, the road map display flag DF is set to ON (step 14).
6) The house map display flag JF is reset to off (step 148). When the road map display flag DF is set to ON, and other conditions are satisfied in the house map switching process (step 124) described later,
A road map is displayed on the display 33. Then, the manual display flag MF is reset to off (step 150).

10. Destination approach switching process FIG. 13 shows a destination approach switching process (step 12 in FIG. 11).
It is a flowchart of 2). In this processing, when the distance between the current position and the registered destination is within the predetermined distance,
A process of displaying the house map on the display 33 and guiding the registered destination in the house map is performed. When the distance between the current position and the registered destination is more than the predetermined distance, the road map is displayed on the display 33.

First, the CPU 2 reads the current position data MP and the registered destination data TP from the RAM 4 (steps 160, 162). Then, the straight line distance from the current position to the registered destination is calculated by calculating the difference between the coordinates of the current position and the coordinate of the registered destination, and stored in the RAM 4 as the destination distance data MD (step 16).
4). Instead of the straight line distance, the length of the route from the current position MP to the final guide point EP through the guide route MW may be obtained.

Next, it is judged whether or not the distance from the current position to the registered destination is within a predetermined distance (step 168). For example, it is determined whether or not the destination distance MD is less than or equal to the reference distance SL. The reference distance SL is a distance considered to be suitable for displaying route guidance on the residential map because the current position is close to the destination, and is stored in the flash memory 3 in advance. Where MD ≦ SL
If so, the current position is close to the destination, and therefore the process for displaying the residential map on the display 33 is performed. First, it is determined whether or not a residential map is displayed on the display 33 (step 170). This is a determination as to whether or not the house map display flag HF is on. If the residential map has already been displayed, it is not necessary to switch the map display mode, so this destination approach switching process (step 122) ends. On the other hand, when the road map is displayed, the house map display flag JF is set to ON (step 172) and the road map display flag DF is reset to OFF (step 17).
4). Since the house map display flag JF is set to ON, the house map switching process described later (step 12
If other conditions are satisfied in 4), the display 3
A house map is displayed in 3.

On the other hand, the destination distance MD is the reference distance SL.
If it is longer than that, the determination in step 168 is NO, and the processing for displaying the road map on the display 33 is performed. After step 168, it is determined whether or not the manual display flag MF is off (step 1
76). When the user requests the display of the residential map in the manual operation process (step 120), the user's request needs to be prioritized. Therefore, when the manual display flag MF is on,
The display mode of the residential map is continued.

If it is determined in step 176 that the manual display flag MF is off, then it is determined whether or not the image displayed on the display 33 is a road map (step 178). . This is a determination as to whether or not the house map display flag HF is off. If the road map has already been displayed, there is no need to switch the map display mode, so the destination approach switching process (step 122) ends. On the other hand, when the residential map is displayed, the road map display flag DF is set to ON (step 180) and the residential map display flag JF is reset to OFF (step 182). When the road map display flag DF is set to ON, the road map is displayed on the display 33 when other conditions are satisfied in the house map switching process (step 124) described later.

11. Residential Map Switching Process FIG. 14 shows a residential map switching process (step 12 in FIG. 11).
It is a flowchart of 4). In this process, when the house map display flag JF is set to ON in the manual operation process (step 120) and the destination approach switching process (step 122), the house map is displayed on the display 33, and the road map display flag DF is displayed. When is set to ON, the road map is displayed on the display 33. Also,
It is possible to display a residential map when the vehicle's traveling speed is below a prescribed speed or when it is stopped, and when the traveling speed of the vehicle is above a prescribed speed or while traveling, display of the residential map is prohibited. To be done. Furthermore, when the residential map around the current position displayed on the screen of the display 33 disappears, a road map is displayed.

First, the CPU 2 determines whether or not the house map display flag JF is on (step 1).
90). If this house map display flag JF is on,
The housing map can be displayed, and the condition is further determined. First, the CPU 2 reads the traveling speed data MV from the RAM 4 (step 192). Then, based on the traveling speed data MV, it is determined whether or not the own vehicle is stopped (step 194). Specifically, it is determined whether or not the traveling speed of the own vehicle detected by the vehicle speed sensor 24 is 0 km / h or a predetermined speed or less. If it is determined that the host vehicle is stopped, it is possible to display the residential map, and then it is determined whether or not the residential map around the current position can be displayed. First, the current position data MP from the RAM 4 by the CPU 2
Is read (step 196). Then, it is determined whether or not there is a residential map including the coordinates of the current position data MP (step 198). For example, if the housing map data is in the range of a quadrangle, is the coordinates of the current position within the range surrounded by the coordinates of the four vertices of the quadrangle, and can the display 33 display a house map centered on the current position? It is determined whether or not.

If it is determined that the residential map can be displayed, then it is determined whether or not the road map is displayed on the display 33 (step 20).
0). This is a determination as to whether or not the house map display flag HF is off. Here, when the road map is displayed, the scale of the displayed road map is RA.
It is stored in M4 (step 202). On the other hand, if the residential map is displayed on the display 33, this step 202 is skipped. Then, the CPU 2 reads the housing map data around the current position from the housing map data file and sends it to the image processor 9. As a result, a map of the house whose current position is the center of the screen is displayed on the display 33 (step 20).
4). Since the house map is displayed on the display 33, the house map displaying flag HF is set to ON (step 206).

On the other hand, if the house map display flag JF is off in step 190, then it is determined whether the road map display flag DF is on (step 20).
8). Here, if the road map display flag DF is on, the road map is displayed. Even if the display of the house map is requested, the house map data for displaying the house map around the current position on the display 33 when the own vehicle is traveling at a predetermined speed or higher (NO in step 194). Even if there is no (step 198 is NO), the road map is displayed.

If step 208 is YES, step 194
Alternatively, if step 198 is NO, it is next determined whether or not a residential map is displayed on the display 33 (step 210). This is a determination as to whether or not the house map display flag HF is on. Here, if the road map is already displayed, it is not necessary to switch the map display mode, and thus the residential map switching process (step 124) is ended. On the other hand, when the residential map is displayed, the mode is switched to the road map display mode. At this time, when the road map display mode is switched to the residential map display mode, the scale data SD stored in the RAM 4 in step 202 is read (step 212).

Then, the CPU 2 reads the road map data around the current position from the road map data file of the scale corresponding to the scale data SD and sends it to the image processor 9. As a result, a road map whose current position is the center of the screen is displayed on the display 33 (step 214). Then, since the road map is displayed on the display 33, the house map displaying flag HF is reset to off (step 216).

As described above, in this embodiment, when the destination is set (step 51), after the destination is selected by the list input, the residential map of the range including the selected destination is automatically selected. Are displayed on the display 33 (step 76 in FIG. 9, step 93 in FIG. 10). This allows the user to know the surroundings of the destination in more detail. Further, when the own vehicle is stopped or is traveling at a speed equal to or lower than a predetermined speed, by prohibiting the destination setting operation (step 60 in FIG. 9), the display of the house map during the destination setting operation is also prohibited. To be done. This allows the navigation device to be used more conveniently. In addition, if the image range with the destination, the current position, and the center of the cursor as the center of the screen is outside the coordinate range of the residential map, the residential map will not be displayed and a road map will be displayed instead. 10 steps 90, 97). As a result, the display on the display 33 is not interrupted.

Further, by manually operating, the map image displayed on the display 33 is switched to either the residential map or the road map (step 120 in FIG. 11) to provide a map display according to the user's request. be able to. For example, it is easy to get information about a route from a road map while driving, and when setting a point such as a destination, detailed information about each point can be obtained from a residential map. Processing can be performed easily. When the vehicle is traveling at a predetermined speed or higher, the visibility of the screen during traveling can be improved by prohibiting the display of the residential map (step 194 in FIG. 14). At present, if we try to provide detailed information on the house shape, the map scale of the residential map will be quite detailed. So when you try to track a vehicle on this residential map, the map scrolls faster,
The visibility of the map will be reduced. Therefore, by prohibiting the display of the residential map when the vehicle is traveling at a predetermined speed or more, it is possible to provide the user with map information with good visibility at all times.

Further, by automatically switching the displayed map information to the residential map when the current position approaches within a predetermined distance of the destination (step 12 in FIG. 11).
2) The user can easily recognize that the vehicle has arrived around the destination and can easily confirm the destination from the detailed information on the point (shape of the building, etc.). Therefore, even if the vehicle arrives at the vicinity of the destination, the destination is not known and the vehicle does not pass through the side next to the destination. Further, when the map information is switched, by storing the scale of the map information before the switching (step 202 in FIG. 14), even if the map switching process occurs, the unnecessary change of the map scale is prevented. The user does not have to reset the map scale every time the map is switched.

Various combinations of these processes are possible. For example, by combining the process of manually switching the map and the process of switching the map when the vehicle speed is higher than a predetermined speed, even if the map is manually switched to the house map, the house map is displayed only at a speed lower than the predetermined speed. Therefore, it is possible to always provide a display with good visibility. In this way, by combining the treatments, it is possible to achieve an effect of higher product value.

12. Stop-by place setting process For example, a sudden request for meals, shopping, or the like may occur while the vehicle is traveling along the guide route. In such a case, the navigation device may be able to search whether or not there is a place requested by the user around the current position. FIG. 15 shows a flowchart of a stop-by place setting process executed in such a case. A stop-by place is a place where you want to stop by a sudden request, as described above.

This stop-by place setting process (step 25
0) is provided as a subroutine in the destination setting process (step 51) and is started in response to the operation of the stop-by setting switch. Further, this stop-by place setting process (step 250) is repeatedly executed similarly to the current position acquisition process (step 50), the route search process (step 52) and the guidance / display process (step 53).
Further, the RAM 4 is provided with a register for storing the stop-by place candidate data DK, the stop-by place data DP, the search range data SA, the search condition data KJ, and the stop-by place setting flag TF.

First, it is determined whether the host vehicle is stopped or at a speed equal to or lower than a predetermined speed (step 252). This is the same processing as step 60 in FIG. If the host vehicle is traveling, this stop-by place setting process (step 250) is not performed. On the other hand, if the host vehicle is stopped, an image requesting the next genre input is displayed on the display 33 (step 254). For example, the list of the names of a plurality of genres is displayed on the display 33, as in the case where the item of the genres is requested in step 68 of FIG. The user selects a genre of a place to drop in from the displayed list (step 256). Then, on the display 33, an image for selecting a search range, search conditions, etc. is displayed (step 258). The search range can be selected variously, for example, within a certain distance from the current position, or within the municipality of the current position. The search conditions are, for example, conditions such as the presence / absence of a parking lot, business hours, charges, and the like that are used as a guide for the user to select.
Data corresponding to these conditions are stored in the detailed destination data file.

When the user looks at the image and selects the search range, search conditions, etc., next, the stop-by place is searched (step 260). Within the search range selected by the user, a place that matches the selected genre and the input condition is searched from the destination data file and the detailed destination data file. The searched place is stored in the RAM 4 as drop-in place candidate data.

Next, the current position or cursor center KLC
It is determined whether or not the residential map centered on is displayable on the display 33 (step 262). This is the same processing as step 90 in FIG. If there is house map data centered on the current position or cursor center KLC,
Next, it is determined whether or not a road map is displayed on the display 33 (step 263). If the road map is displayed, the scale of the displayed road map is stored in the RAM 4 (step 26).
4). On the other hand, if the residential map is displayed on the display 33, step 264 is skipped.

Next, the CPU 2 reads out the housing map data in the range around the current position or the cursor center KLC and displays it on the display 33 (step 265). Further, the house map display flag HF is set to ON. Then, the range of the house shape of the place selected as the stop-by place candidate in step 260 is displayed in blue (step 266). In this step 266, the CPU 2 reads the stop-by place candidate data stored in the RAM 4, and the house-form data matching the stop-by place candidate data is retrieved from the house-form data file and stored in the RAM.
4 is stored. Further, the shape data is read out from the house shape data stored in the RAM 4, and a command for displaying the planar range of the place represented by this shape data in blue is created. Then, by sending this command to the image processor 9, the range of the house shape of the place corresponding to the designated genre is displayed in blue. For example, as shown in FIG. 16, when the house map is displayed on the display 33, the house shape of the place corresponding to the designated genre is displayed in blue. In FIG. 16, it is a portion shaded with a broken line. The user can confirm the place to be a stop-by place candidate by looking at the image.

Next, the coordinates of the cursor center KLC are searched (step 268), and the house shape containing the coordinates of the cursor center is searched from the house shape data file (step 270). The retrieved house shape data is stored in the RAM 4. Then, the shape data of the retrieved house shape data is read, an instruction to display the coordinate range of this shape data in red is sent to the image processor 9, and the cursor center KL is sent.
The house shape of the place where C is entered is displayed in red (step 272). In FIG. 16, it is a portion shaded by a solid line. In addition, the house shape of the place where the cursor center KLC is
The three-dimensional appearance of this place may be displayed as a three-dimensional image in the form of a plane figure. For example, like the stereoscopic image VS shown in FIG. 16, the stereoscopic image VS, which is a perspective view of the appearance of the place, is displayed according to the house shape of the place where the cursor center KLC is located. FIG.
In FIG. 6, the stereoscopic image VS is off the cursor center KLC, but in reality, the stereoscopic image VS is the cursor center KLC.
It is displayed in the position of a house with LC. Then, with respect to the house shape whose cursor center KLC is displaced by the movement of the cursor KL, the house shape that has been displayed in red or a stereoscopic image until then is returned to the original display (step 274). The house shape of the place corresponding to the genre selected by the user is returned to the blue display.

When the house shape data including the cursor center KLC is searched in this way, it is next determined whether or not the display of detailed information has been requested (step 282).
This determination is performed, for example, by detecting whether or not the user has touched the character “detailed information” displayed on the display 33. When the display of the detailed information is requested, the list image data included in the house-shaped data retrieved in step 270 is read by the CPU 2 and sent to the image processor 9 (step 28).
4). As a result, similar to the process of step 102 in FIG. 10, the display 33 displays the contents of detailed data regarding the location at the cursor center in the form of a list.

Next, it is judged whether or not a return is requested (step 286). For example, display 33
It is determined whether or not the character "RETURN" displayed in is touched by the user. If a return is requested, the stop-by place setting process (step 250) ends, and the process proceeds to the next route search process (step 52).
If there is no return request, it is next determined whether or not a stop-by place registration operation has been performed (step 290).
For example, the characters "register" are displayed on the screen of the display 33, and it is determined based on the output signal of the touch switch 34 whether or not the user has touched this display. When the registration operation is performed, the house shape data retrieved in step 270 is used as the stop-by place data DP in the RAM 4
(Step 108).

If the user does not perform the registration operation, and the user moves the cursor KL to change the stop-by place, a screen scroll process (not shown) is performed by an interrupt, and the map image displayed on the display 33 is scrolled. To be done. The map image displayed on the display 33 is scrolled so that the cursor center KLC is always the screen center. Then, when the scrolling is stopped, the procedure returns to step 262, and the coordinates of the cursor center KLC are obtained (step 268).
The house-shaped data including LC is searched (step 270). Then, when the display of the detailed information is requested, a list of the detailed information is displayed (step 28).
2, 284). Further, if the range of the residential map displayed on the display 33 is interrupted by scrolling the screen, that is, if the range of the coordinates displayed on the display 33 exceeds the edge coordinates of the residential map data, step 262. The determination is NO, and the display is switched to the display of a road map with the coordinates of the cursor center KLC as the screen center (step 97).

On the other hand, if there is no house map data including the coordinates of the current position or the coordinates of the cursor center in the above step 262, then it is judged whether or not the house map is displayed on the display 33 (step 275). ). This is a determination as to whether or not the house map display flag HF is on. Here, if the road map is already displayed, it is not necessary to switch the map display mode, and therefore the next step 276 is skipped. On the other hand, when the residential map is displayed, the mode is switched to the road map display mode. At this time, when the road map display mode is switched to the residential map display mode, step 2
The reduced scale data SD stored in the RAM 4 is read out at 64 (step 276).

Then, the CPU 2 reads the road map data around the current position from the road map data file of the scale corresponding to the scale data SD and sends it to the image processor 9. As a result, a road map having the current position or the center of the cursor as the center of the screen is displayed on the display 33 (step 277). Then, since the road map is displayed on the display 33, the house map displaying flag HF is reset to off. In this road map,
The place of the stop-by candidate is displayed in a manner distinguishable from other points such as a blue circle. When the road map is displayed on the display 33, the cursor KL is displayed at the center of the screen of the display 33, so that the CPU 2 obtains the coordinates of the cursor center KLC (step 278).

Next, it is judged whether or not a return is requested (step 286), and when the return is requested, the stop-by place setting process (step 250) ends and the next route search process ( Proceed to step 52). If there is no return request, it is determined whether or not the stop-by place is registered next (step 288). If the registration operation is performed, the coordinates of the cursor center KLC retrieved in step 278 are determined. The indicated position is the stopover data D
It is stored in the RAM 4 as P (step 290). When the registration operation is not performed and the user moves the cursor KL to change the designated position of the stop-by place, the screen scrolling process is performed and the map image displayed on the display 33 is scrolled. Then, when the scrolling is stopped, the process returns to step 262, and the coordinates of the cursor center KLC are obtained (step 278). Further, if the house map with the cursor center KLC as the screen center can be displayed in the coordinate range displayed on the display 33 by scrolling the screen, the determination in step 263 is YES and the coordinates of the cursor center KLC are the screen center. The display is switched to the display of the residential map (step 265).

When the stop-by place is set in this way, in the route search process (step 52), a process of setting a guide route from the current position to the stop-by place is performed, and the guide / display process (step 53). ), The navigation operation is performed according to the guide route to the stop. When the route search process (step 52) and the guidance / display process (step 53) are started, a process of determining whether or not the stop-by place setting flag TF is on is performed. Then, the stop-off place setting flag TF
If is on, the guide route to the stop-by place is set and the navigation is performed. If the stop-off place setting flag TF is off, the guide route to the destination is set and the navigation is performed.

As described above, also when the stop-by place is set, after the genre is selected, the residential map of the range including the current position is automatically displayed on the display 33 (step 265). This allows the user to know the state around the current position in more detail. Further, when the own vehicle is stopped or is traveling at a speed equal to or lower than a predetermined speed, the operation of setting the destination is prohibited (step 252), and the display of the residential map is also prohibited. This allows
This navigation device can be used more conveniently. Furthermore, when the image range with the current position or the center of the cursor as the center of the screen is out of the coordinate range of the residential map, the residential map is not displayed and the road map is displayed instead (steps 262, 277). ). As a result, the display on the display 33 is not interrupted. In addition, the house shape of the place corresponding to the genre selected by the user is displayed in blue (step 266), and the house shape containing the cursor center KLC is displayed in red or the stereoscopic image VS (step 272). , It becomes easier to confirm the house shape at the stop-by place or the cursor position, which can contribute to shortening the time for determining the stop-by place.

The present invention is not limited to the above embodiment,
Various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, when the house map or the road map is displayed on the display 33, the current position, the destination, or the center of the cursor is set as the screen center, but other coordinates may be set as the center. For example, when the front of the traveling direction is widely displayed, a point ahead of the current position by a predetermined distance may be the center of the screen.

Further, the house shape of the above-mentioned stop-by place candidate is displayed in blue (step 266 in FIG. 15), and the house shape including the cursor center KLC is displayed in red or the stereoscopic image VS (step 272 in FIG. 15). Although an example is shown, of course, the color to be displayed is not limited, and the lightness of the range of the house shape,
You may change the brightness and the ground pattern, blink the house shape,
A mark such as an arrow pointing to the house shape may be displayed.

The house map may be a map that can recognize the whole shape or a part of the shape of a building, a facility, a building such as a bridge by coordinates. Regarding the display of the shape of the building, all the buildings in the data may be displayed, or may be displayed as necessary.
Further, the house shape data may be any data as long as it represents the shape of the building and detailed information belonging to the building. By forming the shape of the building as data and recognizing the shape of the building, it is possible to search for the building at the input point, and the user can easily and easily input the desired building. Can be done. Further, by using the shape data of the building to display the shape of the building on the display screen, the visibility of the currently displayed point can be improved, and the point can be easily recognized. Become.

As the input means, the touch switch input has been described above, but it goes without saying that various changes such as joystick input, remote control input, voice input and the like can be made. Further, the stereoscopic image may be displayed at a position through a linked display object such as a leader line, in addition to the position of the house shape which is a stop-by place.

As a condition for switching between the residential map and the road map, selection is made according to the selection operation by the person in the vehicle or the genre of the stop-by place by the person in the vehicle as described above. In addition to selecting according to the specification, selecting whether the current position is within or outside the range where the residential map data is stored, selecting according to changes in the current position, or the purpose once set Select according to the change of ground, select according to whether the vehicle starts running within a predetermined time or outside a predetermined time, select according to engine speed, select according to time, Select according to the amount of remaining fuel, select according to the engine temperature, select according to the battery voltage, select according to the brightness outside the vehicle, or select depending on the temperature outside the vehicle. Select or traveling direction of vehicle Depending or selected, or selected in accordance with the direction of the vehicle may be selected depending on the altitude of the vehicle.

Further, in step 60 of FIG. 9, step 194 of FIG. 14, and step 252 of FIG. 15, it is judged whether or not the traveling speed of the own vehicle is 0 km / h or less than a predetermined speed. Although the process of determining whether or not the vehicle is stopped has been described, the predetermined speed may be a very low speed, or may be a low speed or a medium speed.

The information storage device 37 can be set in a computer in the room or other portable computer, so that the above-mentioned navigation processing can be executed in a place other than the vehicle. For example, map display, simulation movement from the current position to the destination, or distance calculation along the road between any points on the map. And, it is possible to carry the portable navigation device for outdoor activities such as cycling, traveling, mountaineering, hiking, and fishing.

The program and / or data may be sent (transmitted) from the external system to the flash memory 3 via the data transmitting / receiving device 27. This external system is a current position information supply system or an ATIS (Traffic Information Service) information processing center. This external system is located far from the navigation device. The sent program is installed (transferred / copied) in the flash memory 3 when the program is sent to the navigation device or when the operator gives an instruction.

The above-mentioned route search processing (step 52), guidance start point processing (step 460), final guidance point determination processing (step 462), guidance route search processing (step 464), point setting processing (step 460), etc. It may be executed by the external system. This processing result and map information are sent (transmitted) from the external system to the navigation device. Based on the received processing result and map information, the navigation device displays road information and guides the route. In this case, the road information, the map information, the facility information and the traffic congestion information are collectively processed and controlled by the external system, so that more optimal route search and point setting can be performed.

The above program is automatically executed when the information storage device 37 is set in the navigation device, or automatically when the power of the navigation device is turned on, or executed by the operation of the operator. . Since this program and data cannot be stored in the RAM 4 in a non-volatile manner, this installation is executed every time the power is turned on. If the information reading speed from the information storage device 37 is high, the CPU 2
May directly read and execute the program of the information storage device 37. The flash memory 3 is a RAM with a battery backup, an IC memory card or an EP.
It may be ROM.

The display 33 and the image memory 10 are divided into two or more, and the divided image memory 1
The data of the road map and the data of the residential map are written in each 0, and the road map and the residential map are simultaneously displayed. In this case, both maps are maps corresponding to the current position or the destination or the stop-by place, but only one map may correspond to the destination or the stop-by place, and the other map may correspond to the current position.

The current position includes a departure point or a start point which can be guided, as the case may be. The departure place may include a current position or a start point which can be guided. The above destinations include stop points or end points that can be guided.

The present invention stores information about a building such as the shape and name of the building (house shape data file),
A map is displayed based on the information (step 9 in FIG. 10).
3, step 204 in FIG. 14, step 26 in FIG.
5), the map display device may be characterized in that the shape of the displayed building is recognized (shape data), and the building corresponding to the input point is searched for and notified (Fig. Step 99 of 10 or step 270 of FIG. 15).

Further, according to the present invention, a storage means (house shape data file) for storing external information of a building such as a plane shape, a three-dimensional shape or a site of a plurality of buildings, and the storage means stored in the storage means. Read-out means (CPU2) for reading the external information of the building, converting means (image processor 9) for converting the external information of the building read by the reading means into information for display, and this converting means. Display means for displaying a map showing the external information of the building based on the external information of the building converted by (display 33, step 93 in FIG. 10, step 204 in FIG. 14, FIG. 15).
And the step 265) of 1.), and the shape of the building can be recognized in the map displayed on the display means.

The present invention also relates to external information storage means (house-shaped data file) for storing external information of the building such as the shape of the building, and the building stored in the external information storage means. Internal information storage means (detailed data, etc. in FIG. 6) for storing internal information such as the address, name or telephone number of the building in association with the external information of the building, and the external information storage means. Display means for displaying a map showing the external information of the building based on the external information of the building (display 33,
Step 93 of FIG. 10, Step 204 of FIG. 14, FIG.
No. 5, step 265) and a determination means (step 99 in FIG. 10, step 270 in FIG. 15) for determining the shape of the building from the map showing the external information of the building displayed by this display means, and this determination. Searching means (step 102 in FIG. 10, step 284 in FIG. 15) for searching the internal information corresponding to the building determined by the means from the internal storage means, and the building searched by the searching means. The map display device may be provided with a notifying unit (step 102 in FIG. 10, step 284 in FIG. 15) for notifying the internal information of the object.

Further, according to the present invention, a house-shaped data storage means (house-shaped data file) for storing information on a building such as a shape of the building, and a map based on the information stored in the house-shaped data storage means. Display means for displaying and outputting information (display 33, step 93 in FIG. 10, step 204 in FIG. 14, step 265 in FIG. 15), and point input means for inputting a point based on the information displayed on the display means. (Cursor KL, step 94 in FIG. 10, FIG.
268) and the shape of the building based on the house shape data storage means, and the house shape search means (step 99 in FIG. 10) for searching the building corresponding to the point input by the point input means. , Step 270 in FIG. 15), and the display means notifies the building corresponding to the point input by the input means (step 5 in FIG. 8).
It may be a map display device characterized in 3).

Further, according to the present invention, the present position detecting means for detecting the present position of the vehicle (step 50 in FIG. 8) and the house shape data storing means (house shape data file) for storing the shape of the building by the coordinate sequence. And display means (display 33, step 93 in FIG. 10, step 204 in FIG. 14, step 265 in FIG. 15) for displaying and outputting map information based on the information stored in the house shape data storage means, and the display Point input means (cursor KL, step 94 in FIG. 10, step 268 in FIG. 15) for inputting a point based on the information displayed on the means, point coordinates input by the input means, and the house shape data storage House shape search means for comparing and judging the shape of the building formed by the coordinate sequence of the means and searching for the building corresponding to the input point coordinates (Fig. 10).
Step 99 of FIG. 15, step 270 of FIG. 15) and the destination setting means (step 108 of FIG. 10, FIG. 15) of setting the building searched by the house shape search means as the destination.
290) and a route calculation means (step 52 in FIG. 8) for calculating a route from the current position to the destination set by the destination setting means, and the display means inputs by the input means. The building corresponding to the designated point coordinates is notified (step 53 in FIG. 8), and the route calculated by the route calculating means is notified (FIG. 8).
The navigation device may be characterized by the step 53).

Further, according to the present invention, the house shape data representing the shape of the two-dimensionally divided places included in the predetermined area, the position of each place, and the house shape data associated with the information about each place are stored. House shape data storage means (house shape data file)
And a destination designating means (cursor KL) for designating a place to be a destination by a point, and a coordinate searching means for searching the coordinates of the spot designated by the destination designating means (FIG. 1).
0 step 94, step 268 in FIG. 15) and the house shape data stored in the house shape data storage means based on each house shape data, the coordinates of the place searched by the coordinate searching means are in the house shape range. House shape search means (step 99 in FIG. 10 and step 270 in FIG. 15) for searching house shape data contained in the object, and a purpose having a place represented by the house shape data searched by the house shape search means as a destination. Local setting means (step 108 in FIG. 10, step 290 in FIG. 15),
A guide route setting means for setting a guide route to the destination set by the destination setting means (step 5 in FIG. 8).
2) and display means for displaying an image (display 33)
And information display means (step 102 in FIG. 10, step 284 in FIG. 15) for displaying on the display means information about a place included in the house shape data searched by the house shape search means, and the current movement means. Current position detecting means for detecting the position (step 50 in FIG. 8), and route display control for displaying the guide route set by the guide route setting means and the current position detected by the current position detecting means on the display means. It may be a navigation device characterized by including means (step 53 in FIG. 8).

[0111]

As described in detail above, according to the present invention, the display of the road map and the residential map can be switched according to the judgment of the predetermined condition, so that the visibility of the route can be improved during the route guidance. It is possible to improve the quality, and it is possible to easily determine the location under a predetermined condition. Further, by providing the map information selecting means, the point can be easily recognized even when the point is set.

Furthermore, when the current position of the vehicle reaches the vicinity of the destination, the map is switched to the residential map which makes it easy to confirm the point, so that the position of the destination can be accurately determined. , Can facilitate the arrival at the destination. Further, since the road map is displayed when the traveling speed of the vehicle is equal to or higher than the predetermined speed, the visibility of the map during traveling is improved. Further, when it is desired to confirm the location of a building, the building map can be easily recognized by displaying a housing map on condition that the vehicle speed is not higher than a predetermined speed.

[Brief description of the drawings]

FIG. 1 is an overall circuit diagram of a navigation device.

FIG. 2 is a diagram showing stored contents of an information storage device 37.

FIG. 3 is a diagram showing a display example of a road map.

FIG. 4 is a diagram showing a display example of a residential map.

5 is a diagram showing a part of data stored in a RAM 4. FIG.

FIG. 6 is a diagram showing the contents of house shape data.

FIG. 7 is a diagram showing an example of house shape data and a cursor KL.

FIG. 8 is a diagram showing a flowchart of overall processing.

FIG. 9 is a diagram showing a flowchart of a destination setting process.

FIG. 10 is a diagram showing a flowchart of destination designation processing.

FIG. 11 is a diagram showing a flowchart of a map switching process.

FIG. 12 is a diagram showing a flowchart of a manual operation process.

FIG. 13 is a diagram showing a flowchart of destination approach switching processing.

FIG. 14 is a diagram showing a flowchart of a residential map switching process.

FIG. 15 is a diagram showing a flowchart of a stop-by place setting process.

FIG. 16 is a diagram showing an example of color display and stereoscopic display of a house shape.

[Explanation of symbols]

1 ... Central processing unit, 2 ... CPU, 3, 5 ... ROM, 4 ...
RAM, 9 ... Image processor, 10 ... Image memory, 11
... Voice processor, 13 ... Speaker, 20 ... Current position detection device, 21 ... Absolute direction sensor, 22 ... Relative direction sensor, 23 ... Distance sensor, 24 ... Vehicle speed sensor, 25 ... GP
S receiving device, 26: beacon receiving device, 27: data transmitting / receiving device, 30: input / output device, 33: display, 3
4 ... Touch panel, 37 ... Information storage device.

Claims (9)

[Claims] 1. A road map formed on the basis of road information and a residential map formed on the basis of information on a building such as the shape of the building are stored, and the map can be switched. And a map display device. 2. A road information storage means for storing road information representing a road displayed as a map, and a building storage means for storing external information of a building such as shapes of a plurality of buildings displayed as a map. Selecting means for selecting the road information and the external information of the building, and the road information and the external information of the building from either the road information storing means or the building storing means according to the selection of the selecting means. And a conversion means for converting either the road information or the external information of the structure read out by the read-out means into information for displaying as a map. A map display device comprising: display means for displaying the converted road information or external information of a building as a map. 3. Information storage means for storing map information, current position detection means for detecting the current position of the vehicle, input means for inputting information necessary for route calculation such as a destination, and input by the input means. Route calculation means for calculating a route on the basis of the stored information and the map information stored in the information storage means, the route calculated by the route calculation means and the current position detected by the current position detection means. Route guidance means for performing route guidance based on the route information, display means for displaying the map information read from the information storage means and the route calculated by the route calculation means, and map information switching means for switching the map information displayed on the display means. The information storage means includes: a road map information storage means for storing road map data formed based on road information; Housing map information storage means for storing housing map data formed on the basis of information about a structure, and the map information switching means determines whether a road is stored in the road map information storage means by determining a predetermined condition. A navigation device, wherein map information created by reading out map data and map information created by reading out house map data from the house map information storage means are switched and output to the display means. 4. The current position detecting means detects the speed of the vehicle, and the map information switching means displays the display when the vehicle speed detected by the current position detecting means is equal to or higher than a predetermined vehicle speed. 4. The navigation device according to claim 3, wherein the map information displayed and output on the means is switched from a residential map to a road map. 5. A map for selecting map information manually or automatically, wherein the map information switching means judges the map information selected by the selecting means and outputs the map to the display means. 4. The navigation device according to claim 3, wherein information is switched. 6. A remaining distance calculation means for calculating a distance from the current position detected by the current position detection means to the destination input by the input means, and the map information switching means is provided for calculating the remaining distance calculation. Based on the remaining distance calculated by the means, it is determined that the distance from the destination is within a predetermined distance, and the map information displayed and output on the display means is switched from a road map to a residential map. The navigation device according to claim 3. 7. A house-form data storage in which house-shape data representing a shape of a two-dimensionally divided place included in a predetermined area, a position of each place, and house-form data associated with information about each place is stored. Means, display means for displaying an image, and residential map data generation for generating a residential map data for displaying a residential map displayed by using a house shape of a planarly divided place included in the predetermined area Means, a residential map display control means for displaying a residential map on the display means based on the residential map data generated by the residential map data generating means, and a road network and geographical information included in a predetermined area. The road map data generating means for generating the road map data for displaying the road map displayed as described above, and the display means based on the road map data generated by the road map data generating means. A road map display control means for displaying a road map, a destination designating means for designating a place to be a destination by a point, and a coordinate searching means for searching for coordinates of a point designated by the destination designating means, House shape search for searching house shape data in which the coordinates of the point searched by the coordinate searching means are included in the range of the house shape based on each house shape data stored in the house shape data storage means Means, a destination setting means whose destination is the place represented by the house shape data searched by this house shape searching means, a genre selecting means for selecting a genre of a stop-by place, and a search condition for entering a stop-by place Corresponding to the genre selected by the condition input means, the location data storage means for storing information about the place that may be selected as a stop-by place, and the genre selection means Then, a place where the condition entered by the search condition input means is searched from the place data storage means and a stopover candidate search means, and the house shape of the place searched by the stoppage candidate search means The stopover candidate display control means displayed on the residential map in a manner different from the house shape of the place, and the stopover point specifying the stopover from the stoppage candidate display control means. Designation means, a stopover display control means for displaying the house shape of the place of the stoppage designated by the stopover designation means in a manner distinguishing from other stopover candidates, and designation by the stopover designation means Based on the house shape data stored in the house shape data storage means The stop-off place house-shaped search means for searching the house shape data in which the coordinates of the stop-off place searched by the stop-off place coordinate searching means are included in the range of the house shape, and the stop-off place house-shaped search means Stopping place setting means having a place represented by the house shape data as a stopover, a guide route to the destination set by the destination setting means, and a guide to the stopover set by the stopping place setting means The guide route setting means for setting the route, the current position detecting means for detecting the current position of the moving means, the guide route set by the guide route setting means, and the current position detected by the current position detecting means are displayed on the display. The route display control means displayed on the means, and when the guide route is displayed on the display means by the route display control means, the current position is displayed. Determines whether or not the vehicle has approached the destination within a predetermined distance, and which of the residential map and the road map is to be displayed on the display unit according to a predetermined condition. The first display switching means, the second display switching means for displaying a residential map around the destination when the destination is set by the destination setting means, and the destination approach determination means Third display switching means for displaying a house map around the current position when it is determined that the position has approached the destination within a predetermined distance, and the house displayed on the display means by the house map display control means. The range of the map is a residential map display range determining means for determining whether or not it is out of the coordinate range in the screen displayed on the display means, and the residential area is displayed by the display range determining means. A fourth display switching means for switching from the display of the residential map to the display of the road map when the range of the residential map is out of the coordinate range on the screen displayed on the display means; A scale storage unit that stores the scale of the road map when the road map displayed on the display unit is switched to the residential map by the second, third, or fourth display switching unit; The scale stored in the scale storage means when the road map displayed on the display means is switched to the residential map by the second, third, or fourth display switching means and is switched to the road map again. A manual for determining which of the above-mentioned residential map having the scale holding means for displaying the road map and the above road map to be displayed on the display means is manually operated by the user. Switching means, movement determining means for determining whether or not the moving means is moving, and when the moving determining means determines that the moving means is moving, the residential map display control means causes the residential map to be displayed. And a display control means for displaying on the display means information about a place included in the house shape data searched by the house shape search means. Navigation device. 8. A road map formed on the basis of the stored road information is read out and output, and the house map is also stored and is based on at least external information of the building regarding the shape of the building. A computer for map information processing characterized by reading out and outputting a formed residential map, and switching either of these read outputs according to a detected predetermined condition to output one of the maps. A medium that stores a program. 9. The predetermined condition is an operator's selection operation,
Changes in the current position, changes in the running state of the vehicle, changes in the vehicle speed, changes in the direction of the vehicle, changes in the destination, or changes in the distance to the destination or stopover, outside the building. The target information is the number of floors, area, height, advertising body, color, two-dimensional shape, three-dimensional shape or external characteristic of the building, and the above-mentioned residential map is the name of the building, telephone number, address, postal code, 9. A medium storing a computer program for map information processing according to claim 8, further comprising internal information of a field, a business type, a brand, an item, a price, a performance, an actual result or an internal characteristic.