JPH07181891A - Map display device and navigation support device - Google Patents

Abstract

PURPOSE:To easily retrieve map data by recording characters, which express a position or a region, or a position information corresponding to numerical information. CONSTITUTION:A control section 2C, in which a system control microcomputer 9 is connected to an input section 2A, a processing section 2B, a map reading section 3, a map display section 4 and a data retrieval RAM 10, controls the entire system. The RAM 10 records latitude and longitude data PD which represent the center coordinates on the map corresponding to telephone number data TD consisting out-of-town and local numbers as telephone number corresponding map data provided in an IC card as a medium. Thus, a retrieval is performed based on the data TD corresponding to a telephone number TN of the destionation inputted by a user and the map's data PD in which the latitude and the longitude are recorded corresponding to the retrieval result are obtained.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Field of Industrial Application Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems (FIG. 1) Action (FIG. 1) Example (FIGS. 1 to 4) Effect of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map display device and a navigation support device, and can be applied to, for example, a car navigation system for displaying a destination and a map around the destination on a display.

[0003]

2. Description of the Related Art Conventionally, GPS (global
2. Description of the Related Art There is a so-called car navigation system in which a user's current position is measured by using a positoning system) and the user is guided from the current position to an intended destination. In this car navigation system, in addition to displaying the map of the current position obtained by GPS on the display based on the map data recorded in CD-ROM (compact disk read only memory), the map around the destination is also displayed. There is something to display.

[0004]

By the way, when searching for a position to be displayed and a map around the position from the place name information of each municipality and displaying it on the display, the position cannot be specified only from the place name information. Sometimes. In this case, it is necessary to check the information such as the latitude and longitude of the destination with the place name index and specify the destination on the map, which is troublesome. Further, when only the telephone number, the postal code, or the like is known about the destination, even a rough map cannot be displayed, which is insufficient in terms of usability for the user.

The present invention has been made in consideration of the above points, and it is an object of the present invention to propose a map display device and a navigation support device for displaying a map around a destination on a display by a simple input operation.

[0006]

In order to solve such a problem, according to the present invention, a database means 10 formed of position information PD corresponding to character or numerical information expressing a position or area on a map, and a plurality of database means 10 are provided. The recording medium 11 on which the map information MD layered at a reduced scale is recorded, and the position information PD corresponding to the input character or numerical information is read from the database means 10 and corresponds to the position information PD from the recording medium 11, and It is provided with a control means 9 for reading out the map information MD having a reduced scale according to the inputted character or numerical information, and a display means 16 for displaying the read map information MD.

Further, in the present invention, the position detecting means for detecting the position information of the moving body, the recording medium 11 recording the map information layered at a plurality of scales, and the recording medium 11
Position information P of the moving body obtained by the position detection means in response to a user's operation, having a reproduction means for reproducing the map information MD and a display means for displaying the map information MD.
In the navigation support device that displays the map information MD corresponding to D on the display unit 16 and displays the position of the moving body on the map information MD to assist the navigation of the moving body, a character or a character expressing the position or area on the map. Position information PD corresponding to numerical information
And the position information PD corresponding to the input character or numerical value information are read from the data base unit 10 and the position information P from the recording medium 11 is read.
The controller 9 reads the map information MD corresponding to D and having a reduced scale corresponding to the input character or numerical information.

[0008]

The database means 1 stores the position information PD corresponding to the character or numerical information TN expressing the input position or area.
The map information MD corresponding to the position information PD is read from the recording medium 11 and displayed on the display unit 16. As a result, the map information MD can be easily searched based on the input character or numerical information TN expressing the position or area, and thus the map around the destination can be displayed by a simple input operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a map search / display system in a car navigation system using GPS as a whole, and a map recorded in a CD-ROM is displayed according to position information of the current position obtained from the GPS. Display on top. In the case of this embodiment, in addition to this, a correspondence database of the telephone number data TD recorded in the data retrieval RAM and the latitude and longitude data PD is retrieved based on the telephone number TN of the destination keyed in by the numeric keys. Then, the map in the CD-ROM retrieved from the latitude and longitude data PD corresponding to the telephone number TN is displayed on the display and used for car navigation.

The map retrieval / display system 1 includes a control block 2 for controlling the entire system, a map reading block 3 for reading the map data MD from a CD-ROM under the control of the control block 2, and a signal for the read map data MD. Map display block 4 to be processed and displayed on the display
It consists of and.

The control block 2 includes an input unit 2A and a processing unit 2B.
And a control unit 2C. The input unit 2A includes a keyboard 5 for inputting a telephone number TN by means of numeric keys and a light receiving element 6 of an infrared remote control device (not shown).
The processing unit 2B temporarily processes the digital signal processing circuit 7 for digital signal processing the map data MD read from the map reading block 3 and sending it to the map display block 4, and the signal processed by this digital signal processing circuit 7. It is composed of a RAM (random access memory) 8 for recording. The control unit 2C is a system control microcomputer 9
Is connected to the input unit 2A, the processing unit 2B, the map reading unit 3, the map display unit 4, and the data search RAM 10 in the control block 2 to control the entire system.

Here, the data search RAM 10 is a telephone number correspondence map database provided using, for example, an IC card as a medium, and telephone number data T containing only the area code.
The D and the telephone number data TD including the area code and the local area code are classified, and the latitude and longitude data PD representing the corresponding center coordinates on the map are recorded. As a result, the search is performed based on the telephone number data TD corresponding to the destination telephone number TN input by the user, and as a result, the corresponding latitude and longitude data PD of the map is obtained.

The map reading block 3 comprises a CD-ROM 11 in which map data MD as map information is stored, and a laser pickup device 12 for reading out the map data MD recorded in the CD-ROM 11. Here, the file structure in the CD-ROM 11 is
As shown in FIG. 2, the map data MD is hierarchized.
That is, in the lower layer of the route directory RD, the directory DR in which the directory data is recorded exists, and as the directory data, there are the map address data AD of the map data MD and the file identifier of the file FM in which the map data MD is recorded. It is recorded.

The file FM existing in the lower layer of the directory DR by the file identifier of the directory data.
Is searched and the map data MD is read. Further, a path table PT as a table of contents of the file FM is recorded in the CD-ROM 11, and the map data MD recorded in the CD-ROM 11 can be directly searched based on the path table PT. There is. Note that the map data MD classified into a plurality of scales is recorded in each file FM.

The map display block 4 comprises a display control microcomputer 13, a display RAM 14, a digital / analog conversion circuit 15 and a display 16. When the map data MD is sent from the map reading block 3 through the digital signal processing circuit 7, the map display block 4 converts the map data MD into a digital signal through a display RAM 14 and a digital / analog conversion circuit 15. , Display control microcomputer 1
Control to synchronize with 3 and display 16
Display as a map above.

In practice, the map search display system 1 performs map search according to the map search procedure SP1 shown in FIG. That is, the system control microcomputer 9 is a step SP.
In step SP2, the process waits for the user to input the destination telephone number TN via the keyboard 5 or the light receiving element 6 of the input unit 2A. When the telephone number TN of the destination is input, the system control microcomputer 9 causes the data retrieval RAM 1 in step SP3.
0 telephone number correspondence map database is searched based on the telephone number data TD corresponding to the inputted telephone number TN,
Latitude and longitude data P corresponding to the corresponding map data
Read D.

In step SP4, the system control microcomputer 9 uses the latitude / longitude data PD and the CD-ROM 11 based on the telephone number TN based only on the area code, the area code and the local area code, and / or the subscriber number.
The map address data AD in the inside is obtained, and the corresponding map data MD is selected from the file FM recorded in the CD-ROM 11 by the laser pickup device 12 based on this data. The selected map data MD is sent to the map display block 4 via the digital signal processing circuit 7.

Here, for example, the destination telephone number TN is 123-
In the case of 456-XXXX, when the telephone number TN input by the user is up to the area code 123, the latitude and longitude of the center coordinates of the map corresponding to the area code 123 as the map data MD, and the display range is, for example, 10 [ km] The map data MD of a predetermined scale of the area corresponding to the four directions is selected. Also, the telephone number TN entered by the user is the local area code 123-456.
Or up to subscriber number XXXX, map data MD
As the latitude and longitude of the center coordinates of the map corresponding to the area code and the city code 123-456, the display range is, for example, 5 [k
m] Map data M of a prescribed scale for the area corresponding to
D is selected.

At the next step SP5, the display control microcomputer 13 displays a map corresponding to the map data MD selected at step SP4 on the display 16, moves to step SP6, and ends the map search procedure step SP1.

According to the above construction, a telephone number-corresponding map database in which telephone numbers are associated with latitude and longitude data on a map is recorded in the data retrieval RAM, and the telephone number is keyed in by the user. , A map of the area can be displayed according to the information of the telephone number. As a result, the map of the destination can be displayed on the display using easily available information such as the telephone number, and the usability for the user can be significantly improved.

In the above embodiment, the telephone number data TD and the latitude / longitude data PD on the map are recorded in the data retrieval RAM in association with each other, and the latitude / longitude data PD is stored in the map in the CD-ROM. Although the case where the address data AD is corresponded has been described, the present invention is not limited to this, and the telephone number data TD may be directly associated with the map address data AD in the CD-ROM as a database of the data search RAM, for example. good.

FIG. 4 shows the map search procedure SP10 when the telephone number TN and the map address data AD are directly associated with each other. That is, the system control microcomputer 9 starts at step SP10, waits for the user to input the telephone number TN from the input section 2A through the keyboard 5 or the light receiving element 6 of the infrared remote control device at step SP11, and then waits for the telephone number. When TN is input, the process proceeds to the next step SP12, the data search RAM 10 is searched, and the CD-ROM 11 corresponding to the input telephone number TN is entered.
The map address data AD of is read.

At the next step SP13, the system control microcomputer 9 selects the map data MD recorded in the CD-ROM 11 by the laser pick-up device 12 based on the map address data AD from the map file FM, and the digital signal. It is sent to the map display block 4 via the processing circuit 7. Subsequently, the map data MD selected by the display control microcomputer 13
Is displayed on the display 16 and the process proceeds to step SP14 to end the map search procedure step SP10.

Further, in the above embodiment, the telephone number data corresponding to the latitude and longitude data recorded in the data retrieval RAM 10 are the area code and the city code.
The present invention is not limited to this, and telephone number data including the subscriber number in addition to the area code and the local area code may be associated and recorded. In this case, if a telephone number up to the subscriber number is entered in addition to the area code and the local area code, it will be specified by the subscriber number on the map displayed according to the area code and the local area code. It is also possible to specify the positions to be overlapped. In fact, if a database of telephone numbers of hospitals, lodging facilities, public facilities, etc. is prepared as the data search RAM 10, the position of the destination can be displayed on the map and the position of the destination can be confirmed on the map. , The usability can be further improved.

Further, in the above-mentioned embodiment, the case where the telephone number is used as the data expressing the position and the area and the map of the area limited by this telephone number is displayed, but the present invention is not limited to this. Alternatively, a zip code, a destination address, a broadcasting station name corresponding to a reception range, or the like may be used as the data representing the position and the area. For example, when the postal code is recorded in the data search RAM in association with the position information, the map of the area specified by the postal code is displayed at a predetermined scale.

In the above embodiment, the case where the database to be recorded in the data search RAM is supplied by an IC card or the like is described, but the present invention is not limited to this, and an external recording medium such as a magnetic tape is used. Good, cd
It may be recorded in a predetermined area in the ROM, or may be supplied from an external database through a communication network or the like.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the car navigation system using GPS has been described, but the present invention is not limited to this, the destination is searched and a map around the destination is displayed on the screen. It can also be applied to general systems that are designed to display.

[0029]

As described above, according to the present invention, by recording in the position information database means associated with the character or numerical information expressing the position or area, the position corresponding to the input character or numerical information is recorded. Alternatively, the map information of the area can be displayed. As a result, the map information can be easily retrieved, and the usability for the user can be significantly improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a map search display system of the present invention.

FIG. 2 is a block diagram showing a file structure of the CD-ROM.

FIG. 3 is a flowchart showing a map search procedure.

FIG. 4 is a flowchart showing a modified example of the map search procedure.

[Explanation of symbols]

1 …… Map search display system 2 …… Control block, 3
…… Map read block, 4 …… Map display block, 7
... Digital signal processing circuit, 9 ... System control microcomputer, 10 ... Data retrieval RAM, 11 ...
... CD-ROM, 12 ... Laser pickup device.

Claims (8)

[Claims] 1. A database means formed of position information corresponding to character or numerical information representing a position or area on a map, a recording medium in which map information layered at a plurality of scales is recorded, and input. Control means for reading the positional information corresponding to the input character or numerical information from the database means and for reading out the map information corresponding to the positional information and of a scale corresponding to the input character or numerical information from the recording medium. And a display means for displaying the read-out map information. 2. The map display device according to claim 1, wherein the character or numerical information is a place address, a telephone number, a postal code, or a broadcasting station name corresponding to a receiving range. 3. When only the area code is entered as the telephone number, the map information of a reduced scale corresponding to the area code is displayed on the display means, and the area code and city are displayed as the telephone number. The map display device according to claim 1 or 2, wherein when the internal station number is input, the map information of a scale corresponding to the local station number is displayed on the display means. 4. When the subscriber number is input in addition to the area code and area code as the telephone number, a map of a reduced scale corresponding to the area code and city area number displayed on the display means is displayed. 4. The information displays the position specified by the subscriber number, the claim 1, the claim 2, or the claim 3.
The map display device described in. 5. A position detecting means for detecting position information of a moving body, a recording medium on which map information layered at a plurality of scales is recorded, and a reproduction for reproducing the map information by reproducing the recording medium. Means and a display means for displaying the map information, and displays the map information according to the position information of the moving body obtained from the position detecting means on the display means in response to a user operation. At the same time, in the navigation support device that displays the position of the moving body on the map information to assist the navigation of the moving body, it is formed by position information corresponding to character or numerical information expressing the position or area on the map. The database means and position information corresponding to the input character or numerical information are read from the database means, and the input character or number corresponding to the position information is input from the recording medium. Navigational support device characterized in that it comprises a control means for reading the map information of the scale in accordance with the information. 6. The navigation support device according to claim 5, wherein the character or numerical information is a place address, a telephone number, a postal code, or a broadcasting station name corresponding to a receiving range. 7. When only the area code is entered as the telephone number, the map information of a reduced scale corresponding to the area code is displayed on the display means, and the area code and the area code are displayed as the telephone number. The navigation support device according to claim 5 or 6, wherein when the local area code is input, map information of a scale corresponding to the local area code is displayed on the display means. 8. A map of a reduced scale corresponding to the area code and the city area code displayed on the display means when a subscriber number is entered as the telephone number in addition to the area code and the area code. The information indicating the position specified by the subscriber number is displayed in the information.
Navigation support device described in.