JPH0990869A - Map associated information distribution system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to acquire the map data reflecting the latest road situations, etc., on a terminal device side even in the state user does not have the latest CD-ROM storing the map data at hand. SOLUTION: This system is composed of a host system 2 which has a map data base 1 and plural terminal devices 3a to 3c which receive the map data and map associated data. The host system 2 is provided with an updated part map data base 6 for storing the map data of the updated part. The host system reads the updated part map data corresponding to the position identification information included in the requests from the terminal devices 3a to 3c out of the updated part map data base 6 according to the request from any of these terminal devices and returns the data to the requesters. The updated part map data received from the host system 2 is stored in the updated part map data storage means and is displayed in the display section of the terminal devices of the requesters.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map-related information distribution system for distributing map data and related information from a host system to fixed or mobile terminal devices.

[0002]

2. Description of the Related Art With the development of vehicles and road traffic networks, it has become possible to easily move to remote areas. However, if you go to an unfamiliar area, information such as maps becomes indispensable.

Recently, map information is stored in a CD-ROM,
A GPS (Global Pointing) that displays a map around the current position from the CD-ROM on the display screen according to the current position detected using a satellite and guides the user to the destination.
System-based navigation systems are becoming popular.

FIG. 12 is a block diagram showing the outline of this navigation system. An input unit 101 for inputting various instructions, a GPS unit 102 for receiving a radio wave from a satellite to detect the current position, and map data are shown. Stored CD-
It is composed of an external storage unit 103 for reading map data from the ROM, a data processing unit 104 for controlling the whole, and a display unit 105 for displaying the processing result.

In the navigation system having such a configuration, when the power is turned on, the GPS unit 102 receives the radio wave from the satellite, starts detecting the latitude and longitude of the current position where the own device is located, and the detection result. Is input to the data processing unit 104.

On the other hand, the data processing unit 104 performs initialization processing after power-on, and then, from the CD-ROM of the external storage unit 103, based on the latitude and longitude information of the current position input from the GPS unit 102. The map data in a predetermined range centering on the current position is read out, and a map that visualizes the map data is displayed on the display unit 105.

At this time, a specific symbol indicating the current position and various command menus for receiving instructions from the user are displayed on the display screen on the map. This command menu includes one for registering a destination and one for tracing a specific symbol indicating the current position on the map while displaying the current position.

[0008]

By the way, the road to the destination is not permanently invariable, but is changed for the purpose of regional development or improvement of road conditions, or is temporarily changed due to a natural disaster or a traffic accident. Often disconnected.

However, the CD-RO storing the map data
M is updated and sold, for example, on a yearly basis.

Therefore, the CD reflecting the latest road conditions
-CD-ROM before update until ROM is obtained
Will be used to guide the route to the destination. As a result, if there is a recently blocked road or a road that is blocked on the route to your destination, you will be guided to the blocked road or a road that is temporarily blocked. Such inconvenience has occurred.

This can be supplemented by radio traffic information. However, the target of the traffic information is the highways and the main roads, and the municipal roads in the urban areas are not targeted in many cases. Therefore, if there is a change in the municipal roads in the city, it cannot be supplemented by the traffic information on the radio, which is a factor that impairs the reliability of the navigation system.

An object of the present invention is to provide a map in which the terminal device can obtain map data reflecting the latest road conditions even if the latest CD-ROM storing the map data is not available. To provide a related information delivery system.

[0013]

In order to achieve the above object, a map-related information distribution system of the present invention comprises a host system equipped with a map database and a plurality of map data and map-related data received from the host system. Update means for updating the map data stored in advance in the map database, and the map data for the updated portion with the position identification information and the update date information stored in the host system. In response to a request from a partial map database and any one of the terminal devices, a search processing unit for reading the updated partial map data corresponding to the position identification information included in the request from the updated partial map database, and requesting a search result. A transmitting / receiving means for transmitting to the original terminal device is provided, and each terminal device receives radio waves from a satellite and mounts itself. Present position detecting means for detecting the present position of, the external storage means for reading the map data at the present position detected by the present position detecting means from the CD-ROM, and a display means for displaying a map of the visualized map data, Input means for inputting distribution request information including the type of data requested for the host system, position identification information, etc., transmitting / receiving means for transmitting the input distribution request information to the host system, and receiving from the host system The updated map data storage means for storing the updated partial map data, and whether or not the updated partial map data read from the CD-ROM and located in the map displayed on the display means are displayed. Location identification information of the existing map and the location identification information of the updated partial map data stored in the updated map data storage means. Search by comparing the bets, if present, is provided with a the update map data display processing means for displaying the updated partial map data to the appropriate location to visualize.

[0014]

According to the above means, when it is desired to know whether the map is updated for a specific area, the specific area name is input from the input means of the terminal device. Then, the terminal device creates the delivery request information including the position identification information indicating the area name and the data type information indicating that the data type is the updated partial map data, and transmits it to the host system from the transmitting / receiving means. To do.

On the other hand, the host system reads the updated partial map data of the area name specified by the position identification information from the updated partial map database, and transmits it from the transmitting / receiving means to the requesting terminal device.

Upon receiving the updated partial map data, the terminal device stores the updated partial map data in the updated map data storage means.

The updated partial map data is the CD-RO.
It is read from M and it is determined whether or not it is located in the map displayed on the display means. If it is located, the updated partial map data is visualized and displayed at the corresponding position.

Thus, in the terminal device, the CD
Even if the date of issue of the ROM is old, the latest updated partial map data relating to the specific area can be acquired and displayed at the corresponding position, so that the latest road conditions and the like can be known.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to illustrated embodiments.

FIG. 1 is a system configuration diagram showing an embodiment of the present invention. A map-related information distribution system of this embodiment includes a host system 2 having a map database 1.
A plurality of mobile terminal devices 3a for receiving map data and map-related data such as tourist information from the host system 2,
3b and 3n, and these mobile terminal devices 3a and 3n
b and 3n are connected to the base station 4 by a wireless line. The base station 4 is connected to a network 5 which is a wired public line network, and the host system 2 is connected to the network 5.

Therefore, the mobile terminal devices 3a, 3b, 3n and the host system 2 are connected to the host system 2 through the wireless line reaching the base station 4 and the network 5.

The base station 4 comprises mobile terminal devices 3a, 3b, 3
When a mobile phone is used as the wireless transmission / reception means of n, it corresponds to a base station of a mobile phone operator.

In addition to the map database 1, the host system 2 is provided with an update part map database 6 for storing only the update part of the map data with an update date added, and a distribution service contractor list database 8. .

In the map database 1 of the host system 2, for example, map data showing a road map of all over Japan and map-related information such as tourist information for each region are registered.

Further, the updated partial map database 6 contains
When the map data and the map-related information stored in the map database 1 are updated, only the updated data is stored.

The network 5 is connected to a host terminal 7 installed at a tourist association or a road management office in each area.
The host terminal 7 is also configured to be able to register or update map data or map-related information of the area in charge or the area of jurisdiction.

The map data and map-related information stored in the updated partial map database 6 are, as shown in FIG.
It consists of each area data of place name 21, telephone number 22, latitude / longitude 23, registration / update date 24, division 25, and data 26, and the place name, telephone number,
Latitude, longitude, registration / update date, classification, and data are registered. Of these, the place name 21, telephone station number 22, latitude and longitude 23 constitute the position identification information 27, and the position is specified by at least one of the place name 21, telephone station number 22, latitude and longitude 23.

Here, for example, when a part of the map data is updated, as shown in FIG. 2, the place name 21 is "Kannai-cho, Yokohama-shi, Kanagawa", the telephone number 22 is "045", and the latitude / longitude 23 is "23". 35 ° 26 'north latitude, 139 ° 39' east longitude ", registered / updated date 24"
“Month 1”, “map” is registered as the category 25, and “map data of the corresponding place name” is registered as the data 26.

This is also registered in the same manner for map-related information such as tourist information. This registration can be performed from the host system 2 or the host terminal 7.

Even if the map data or the map-related information regarding the same area is updated a plurality of times, it is registered according to the update date.

This is to determine whether or not there is update partial data to be transmitted, according to the issue date of the CD-ROM of the mobile terminal device.

That is, a mobile terminal device A equipped with a CD-ROM issued on "April 1, 1993",
Assuming that there is a mobile terminal device B equipped with a CD-ROM issued on “April 1, 1995”, the area where both devices have requested distribution on “September 11, 1994” If the map data of area C is updated, it is considered that the update content of area C has already been included in the CD-ROM of the mobile terminal device B, so there is no need to transmit the update data of area C. The update content of the area C is not reflected on the CD-ROM of the mobile terminal device A at all, and it is necessary to transmit the update data of the area C.

Therefore, in the present embodiment, even when the map data or the map-related information regarding the same area is updated a plurality of times, the map data or the map-related information is registered for each update date, and is registered in the distribution request information from the mobile terminal device. Compare the issue date of the included CD-ROM and the update / registration date of the map data of the required area, and if the issue date of the CD-ROM is older, map data of the required area or map-related The data is transmitted to the requesting source, and if the date of issue of the CD-ROM is newer, the map data of the required area or the map-related data is not transmitted to the requesting source.

It should be noted that the map database 1 is registered with the latest map data and map-related information information updated by the updating work, and is used when a new CD-ROM is issued.

The date of issue of the CD-ROM is input by the user when the CD-ROM is mounted on the mobile terminal device. However, if the issue date is read from the CD-ROM, the read issue date can be used.

The mobile terminal devices 3a, 3b, 3n are constructed as shown in FIG.

That is, the GPS unit 31 which receives the radio wave from the satellite and detects the present position of the own device, the GPS unit 3
CD-RO the map data at the current position detected by 1
The external storage unit 33 read from the M32, the display unit 34 for displaying a map in which the map data is visualized, the distribution request information including the type of data requested for the host system 2 and the position identification information, and the information such as the destination are input. Input unit 35,
A transmission / reception unit 36 that transmits the input distribution request information to the host system 2 via the base station 4, and an updated map data storage unit 37 that stores updated partial map data or updated partial map related information received from the host system 2. , A data processing unit 38 and a printer 39 for performing a search process for a route to a destination and a distribution request process for the latest map data.
It is composed of

Here, the data processing unit 38 uses the CD-RO.
Whether or not there is updated partial map data read from M32 and displayed in the map displayed on the display unit 34 is stored in the position identification information of the displayed map and the updated map data storage unit 37. The search is performed by comparing with the position identification information of the updated partial map data, and if it exists, the updated partial map data is displayed and displayed at the corresponding position, and the updated partial map related information is displayed. The display unit 34 is provided with related information display processing means for displaying in a predetermined format.

FIG. 4 is a frame structure diagram of a distribution request request transmitted from the mobile terminal devices 3a, 3b, 3n to the host system 2. In the case of requesting distribution of the map data stored in the map database 1. 4A, the map information request command 41 and the position identification information 4 are displayed as shown in FIG.
2, sender CD-ROM issue date 43, sender ID
(For example, a mobile telephone number) 44 is created and transmitted.

When requesting the distribution of the map-related information stored in the map database 1, as shown in FIG. 4B, the map-related information request command 45, the position identification information 42, the sender CD- A frame including a ROM issue date 43 and a sender ID (for example, mobile phone number) 44 is created and transmitted.

When requesting the distribution of the map data stored in the updated partial map database 6, FIG.
As shown in (c), the map update information request command 46,
Position identification information 42, sender CD-ROM issue date 4
3. Create and transmit a frame consisting of the sender ID (eg, mobile phone number) 44.

Further, when requesting the distribution of the update information of the map-related information stored in the update partial map database 6, as shown in FIG. 4D, the map-related update information request command 47 and the position identification information are shown. 42, sender CD-RO
A frame composed of the M issue date 43 and the sender ID (for example, mobile phone number) 44 is created and transmitted.

In response to such a distribution request, the host system 2 sends a source ID 51, a type ID 52, and information (map data or map-related information) 5 as shown in FIG.
3, a reply information frame including a region ID 54, latitude / longitude 55, and registration / update date 56 is created and sent back to the requesting mobile terminal device.

The type ID 52 is used to distinguish whether the information 53 is map data, map-related information, map update information, or map-related update information. The area ID 54 indicates a place name or telephone number.

In this case, area ID 54 and latitude / longitude 55
The reason for dividing is because the more accurate the position is when the latitude and longitude information is present when the map of the updated portion is pasted and displayed on the map of the relevant area.

That is, when requesting map data from the mobile terminal device, even if only the area name is specified and requested, the host system 2 returns latitude / longitude information 55 in addition to the area name. Based on this, the map of the updated part is accurately replaced and displayed on the map of the relevant area.

The operation of the map-related information distribution system configured as described above will be described below.

FIG. 6 is a flow chart showing an outline of the data distribution processing of the host system 2. First, it is judged whether or not a distribution request request from the mobile terminal device has been received (step 61), and it must be received. For example, it waits in the reception waiting state.

When a distribution request request is received, the type of request information is determined by the command in the distribution request request,
Further, the required area is determined (step 62).

That is, when the distribution request request of the frame structure shown in FIG. 4A is received, it is determined by the map information request command 41 that the request information is the map information in the map database 1, and the position identification is further performed. The information 42 determines the required area. In addition, the issue date 43 of the CD-ROM 32 is used to determine the issue date of the CD-ROM 32 attached to the mobile terminal device that has transmitted the distribution request, and the telephone number of the sender mobile terminal device is set to the sender ID 4
It judges by 4.

When the distribution request request of the frame structure shown in FIG. 4B is received, it is determined by the map related information request command 45 that the request information is the map related information in the map database 1, and Position identification information 42
Determine the required area by. In addition, the CD-ROM 32
The issue date 43 determines the issue date of the CD-ROM 32 mounted on the mobile terminal device that has transmitted the distribution request, and determines the telephone number of the sender mobile terminal device as the sender I.
It is determined by D44.

Similarly, when the distribution request request of the frame structure shown in FIG. 4C is received, it is determined by the map information request command 46 that the request information is the map information in the updated partial map database 6, Further position identification information 4
The required area is determined by 2. Also, CD-ROM3
The issue date 43 of No. 2 determines the issue date of the CD-ROM 32 mounted on the mobile terminal device that transmitted the distribution request request, and the caller ID 44 determines the telephone number of the mobile terminal device that is the sender.

When the distribution request request of the frame structure shown in FIG. 4D is received, the request information is updated by the map related information request command 47 and the updated partial map database 6 is sent.
It is determined that the information is map-related information in the above, and the required area is determined based on the position identification information 42. CD-R
The issue date 43 of the OM 32 is used to determine the issue date of the CD-ROM 32 mounted on the mobile terminal device that has transmitted the distribution request request, and the telephone number of the source mobile terminal device is determined based on the source ID 44.

Next, the map data or map related information of the area designated by the position identification information 42 is searched from the updated partial map database 6 or the map database 1 (step 63).

In this case, it is determined whether or not the mobile terminal device has subscribed to the map information distribution service contract based on the telephone number of the source mobile terminal device. If not subscribed, a message indicating "undeliverable" is created and transmitted to the requesting mobile terminal device.

When retrieving the map data or map-related information of the area designated by the position identification information 42 from the updated partial map database 6, does the updated partial map database 6 contain the map data or the map-related information of the corresponding area? Whether or not the position identification information 42 is searched is searched.

If there is a data area having the position identification information 27 that matches the position identification information 42, it is determined by the division 25 whether the information division of this data area is map data or map related information.

If the requested data category matches, the update / registration date is compared with the update / registration date 24 and the CD-ROM issue date 43 in the distribution request request, and which one is older. Determine whether

If the issue date of the CD-ROM 32 is older, the map data of the requested area or the map-related data is transmitted to the request source (step 64). However, CD-RO
If the issue date of M32 is newer, a message such as "No map changes" or "No map related information changes" is sent to the request source.

If the requested area map data or map-related information is not stored in the updated partial map database 6, regardless of the issue date of the CD-ROM 32,
Since the map data and map-related information for the area have not been updated, a message such as "No map changes" or "No map-related information changes" is sent to the request source.

The host system 2 executes the above processing each time a distribution request request is received.

FIG. 7 is a flow chart showing an outline of processing in the mobile terminal device. The data processing unit 38 performs initialization processing when the power is turned on, and further inputs information on the current position detected by the GPS unit 31. , The map data of a predetermined range including the current position is read from the CD-ROM 31, and the visualized map is displayed on the display unit 34.

At this time, the current position is displayed on the map with a specific symbol, and a command menu for receiving a request from the user is displayed (step 71).

Next, it is judged whether the content selected by the command menu is "input destination", "reference area information" or "obtain map update information" (steps 72, 73,
74).

If "Destination Entry" is selected, the user is prompted to enter a destination and, in response, if the destination is entered by any of the information of place name, telephone number, latitude and longitude (step 76). ), CD as position identification information
-Search the ROM 32 to see if there is map data for the area (step 76).

The map data of the corresponding area is the CD-ROM 32.
If it is registered in, the map data of the area is read out, and if the trace start is instructed, the map data up to the destination is traced (steps 77, 78, 7).
9).

By sequentially performing the trace processing up to the destination such as the first destination, the second destination, and the third destination, it is possible to trace the map data up to the final destination.

In the traced map data, the head of the storage position address is sequentially stored in the internal memory of the data processing unit 38, and when the map data corresponding to the traced map data is read from the CD-ROM 32 in order when moving to the destination. used.

On the other hand, the map data of the destination is a CD-ROM.
If not registered in 32, host system 2
Is sent to the client (step 80).

This is because after the transmission / reception unit 36 establishes a communication line with the host system 2 via the base station 4 and the network 5, the distribution request request frame shown in FIG. Do by sending.

After this, the mobile terminal device temporarily disconnects the communication line with the host system 2 and shifts to the state of waiting for a reply from the host system 2.

The reason for disconnecting the communication line with the host system 2 is that the person who actually requested the distribution is illegally charged by illegally inputting the sender ID (telephone number) of a third party. This is to prevent

After the elapse of a predetermined time, the communication line between the host system 2 and the requesting mobile terminal device is reestablished by the calling procedure from the host system 2 to the requesting mobile terminal device, and the reply shown in FIG. When the destination map data is returned from the host system 2 by the frame, the data processing unit 38 stores the returned map data in the updated map data storage unit 37 with the data structure shown in FIG. This stored map data is used when moving to the destination.

The same processing is also performed when referring to map-related information such as a tourist guide for a destination from the map database 1. In this case, the map data and the map-related information may be retrieved at the same time and transmitted to the mobile terminal device.

On the other hand, when the "reference map-related update information" is selected (step 73), the user is prompted to enter the destination, and in response to this, the destination is selected from the information such as the place name, telephone number, latitude and longitude. If input (step 8)
1), the data processing unit 38 uses this as the position identification information to create the distribution request frame of FIG.
After the communication line with the host system 2 is established by 6 via the base station 4 and the network 5, it is transmitted from the transmitting / receiving unit 36 (step 82).

After that, the mobile terminal device disconnects the communication line with the host system 2 once, and shifts to the state of waiting for a reply from the host system 2.

After the elapse of a predetermined time, when the map-related update information of the destination is returned from the host system 2 by the reply frame shown in FIG. 5, the returned map-related update information is displayed in the update map data storage unit 37. After the data structure shown in FIG. 2 is stored, it is displayed on the display unit 34 (step 8).
4).

At this time, if printout is instructed by the user who has viewed the displayed contents (step 84), the displayed map-related update information is printed out from the printer 39 (step 85).

When "Get map update information" is selected (step 74), the user is prompted to enter a destination, and in response to that, the destination is entered by any one of the information such as place name, telephone number, latitude and longitude. If so (step 86), the data processing unit 38 uses this as the position identification information as shown in FIG.
The distribution request request frame is created, the communication line with the host system 2 is established by the transmission / reception unit 36 via the base station 4 and the network 5, and then transmitted from the transmission / reception unit 36 (step 87).

After that, the mobile terminal device temporarily disconnects the communication line with the host system 2 and shifts to the state of waiting for a reply from the host system 2.

When the updated partial map data of the destination is returned from the host system 2 by the reply frame shown in FIG. 5 after a predetermined time has passed, the returned updated partial map data is displayed in the updated map data storage unit 37. After storing in the data structure shown in FIG. 2, the map is visualized and displayed on the display unit 34 (step 88).

Here, the data processing section 38 reads out from the CD-ROM 32 and displays it on the display section 34 when the map at the current position detected by the GPS section 31 is displayed by the updated map data display processing. Whether the updated partial map data located in the existing map exists is compared with the position identification information of the displayed map and the position identification information of the updated partial map data stored in the updated map data storage unit 37. The updated partial map data is visualized and displayed at the corresponding position if it exists.

That is, as shown in FIG. 8, the diagonal latitude and longitude are (x0, y0), (x1, y) on the display screen.
When the map 81 in the range 1) is displayed, the update map data storage unit 37 stores the updated partial map 8 of latitude and longitude = (a0, b0), (a1, b1) included in this display range.
2 exists, the updated partial map 82 is changed to the map 81.
Display it at the corresponding position in.

In this case, the updated partial map 82 that is outside the range of the map 81 is not displayed. That is, the updated partial map 82 of the broken line portion in FIG. 8 is not displayed.

As a result, the latest road map is displayed, and the user of the mobile terminal device can be smoothly guided to the destination according to this display.

FIG. 9 is a diagram showing a specific display example of the updated partial map, and shows that the updated partial map 82 is displayed in the map 91 read from the CD-ROM 32 and displayed. In addition, the "x mark" shown by the reference numeral 95 represents a closed state.

FIG. 10 shows that in the map 91 read out from the CD-ROM 32 and displayed, the area guide information 93 which is map related information is displayed in characters at a predetermined position on the display screen. .

The user of the mobile terminal device can know the tourist attractions and various local events from the area guide information.

By the way, in the distribution service contractor list database 8 in the host system 2, as shown in FIG. 11, the contractor name 811, the telephone number 812, and the contract period for which the distribution service contract of the map data and the map-related information is made. 813 and a charge discount rate 814 are stored.

When the host system 2 receives a distribution request request for map data and map-related information from the user of the mobile terminal device, a telephone number matching the sender ID 44 is registered in the distribution service contractor list database 8. If it is not registered, a message indicating that the distribution service cannot be received is returned to the requesting mobile terminal device.

However, if registered, the contract period is checked, and only when the contract period has not expired, the map database 1 or the updated partial map database 6 is searched, and then communication with the requesting mobile terminal device is performed. Source ID of the line
Establish according to 44 and send the search results. At this time, the billing discount rate 814 of the contractor is checked and the search result is
Send billing amount message. The actual charge is collected by requesting the bank to process the withdrawal from the bank account.

In this case, instead of the telephone number 812, the CD-
A method of registering the serial number of the ROM 32 may be considered, but if the CD-ROM itself is subleased to a third party, a legitimate purchaser will be charged, causing trouble. Therefore, by determining the charging destination by the telephone number 812, the person who directly receives the profit is charged, so that the trouble associated with the charging can be prevented.

As described above, the map-related information distribution system of this embodiment has the following effects.

(1) In the mobile terminal device, the CD-R
Even if the OM issuance date is old, the latest updated partial map data or map-related update information relating to the specific area can be acquired and the latest road conditions can be provided to the user.

(2) Compare the issue date of the CD-ROM with the update / registration date of the map data of the required area, and use the CD-R
If the OM issuance date is older, send the map data of the requested area or map-related data to the requesting source, and send the CD-
If the date of issue of the ROM is newer, the map data of the requested area or map-related data is not sent to the request source, preventing unnecessary occupation of the communication line,
Moreover, it is possible to prevent unnecessary duplicate data from being stored in the mobile terminal device.

(3) When transmitting the map data of the search result from the host system to the mobile terminal device, the area ID 5
Since 4 and latitude / longitude 55 are separately transmitted, it is possible to accurately replace and display the updated map on the map of the relevant area.

(4) When the host system receives a distribution request request for map data and map-related information from the user of the mobile terminal device, a telephone number matching the sender ID is registered in the distribution service contractor list database. Only when the search result of the map database 1 or the updated partial map database 6 is transmitted, it is possible to eliminate a reference request from a person other than the delivery service contractor.

(5) When transmitting the search result, the host system temporarily disconnects the communication line with the requesting mobile terminal device, and when the search result is obtained, the host system communicates with the mobile terminal device according to the sender ID. Since the communication line is established and the search result is transmitted, the search result is not transmitted to the mobile terminal device having the illegal sender ID, and the illegal acquisition of the map data and the map-related information can be eliminated. .

(6) Since the host system and the mobile terminal device are connected to each other by a wireless line, information such as map data and tourist information in various places can be obtained while the mobile terminal device is mounted on a moving body such as an automobile. It can be easily obtained without referring to the traffic information on the radio.

In the above embodiments, the example in which the host system and the mobile terminal device are connected by a wireless line has been described, but it goes without saying that the same can be applied to a case where they are connected by a wired line. .

[0101]

As described above, the map-related information distribution system of the present invention has the following effects.

(1) For a mobile terminal device, a CD-R
Even if the OM issuance date is old, the latest updated partial map data or map-related update information relating to the specific area can be acquired and the latest road conditions can be provided to the user.

(2) Since the host system and the mobile terminal device are connected to each other by a wireless line, information such as map data and tourist information of various places can be obtained while the mobile terminal device is mounted on a moving body such as an automobile. It can be easily obtained without referring to the traffic information on the radio.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of data stored in an updated partial map database.

FIG. 3 is an internal configuration diagram of a mobile terminal device.

FIG. 4 is a configuration diagram of a distribution request request frame for map data and the like.

FIG. 5 is a configuration diagram of a reply information frame transmitted from the host system.

FIG. 6 is a flowchart showing an outline of data distribution processing of the host system.

FIG. 7 is a flowchart showing a process of the mobile terminal device.

FIG. 8 is an explanatory diagram of a process of displaying a map of an updated part on the map on the screen.

FIG. 9 is an explanatory diagram of a specific example in which a map of an updated portion is displayed on the map on the screen.

FIG. 10 is an explanatory diagram of a specific example in which map-related update information is displayed on a map on the screen.

FIG. 11 is a data configuration diagram of a distribution service contractor list database.

FIG. 12 is a schematic configuration diagram of a conventional navigation system.

[Explanation of symbols]

1 ... Map database, 2 ... Host system, 3a, 3
b, 3n ... Mobile terminal device, 4 ... Base station, 5 ... Network, 6 ... Updated partial map database, 7 ... Host terminal,
8 ... Delivery service contractor list database, 27 ... Position identification information, 31 ... GPS section, 32 ... CD-ROM, 33
... external storage unit, 34 ... display unit, 35 ... input unit, 36 ... transmission / reception unit, 37 ... updated map data storage unit, 38 ... data processing unit.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G06F 15/401 340A 15/62 335

Claims (3)

[Claims] 1. A map-related information distribution system comprising a host system having a map database and a plurality of terminal devices receiving map data from the host system, wherein the host system is stored in advance in the map database. Updating means for updating the generated map data, an updated partial map database for storing the updated partial map data with position identification information and update date information stored therein, and, in response to a request from any of the terminal devices, Each of the terminals is provided with a search processing unit for reading the updated partial map data corresponding to the position identification information included in the request from the updated partial map database, and a transmitting / receiving unit for transmitting the search result to the requesting terminal device. The device includes a current position detecting means for receiving a radio wave from a satellite and detecting the current position of the device itself, and a current position detecting means. CD map data in the detected current position
-External storage means for reading from the ROM, display means for displaying a map that visualizes map data, input means for inputting distribution request information including the type of data requested for the host system and position identification information, etc. Transmitting / receiving means for transmitting the distribution request information to the host system, updated map data storage means for storing the updated partial map data received from the host system, and read from the CD-ROM and displayed on the display means. Whether or not there is updated partial map data located in the map, the position identification information of the displayed map and the position identification information of the updated partial map data stored in the updated map data storage means are displayed. Search by comparing and
A map-related information distribution system comprising: an updated map data display processing means for visualizing the updated partial map data and displaying the updated partial map data at a corresponding position, if any. 2. A map-related information distribution system comprising a host system having a map database and a plurality of terminal devices for receiving map data and map-related data from the host system, wherein the host system comprises the map. An updating means for updating the map data and the map-related data stored in advance in the database; and an updated partial map database for storing the updated part of the map data and the map-related data with position identification information and update date information added, In response to a request from the terminal device, a search processing unit that reads the updated partial map data or the updated partial map-related data corresponding to the position identification information included in the request from the updated partial map database, and requests the search result. And transmitting and receiving means for transmitting to the original terminal device. Current position detecting means for receiving radio waves to detect the current position of the device from, CD map data in this present position detecting means detects the current position
-External storage means for reading from ROM, display means for displaying a map that visualizes map data, input means for inputting distribution request information including the type of data requested for the host system and position identification information, and the like, Transmitting / receiving means for transmitting the distribution request information to the host system, updated map data storage means for storing updated partial map data or updated partial map related information received from the host system, and read from the CD-ROM. Whether or not the updated partial map data located in the map displayed on the display means exists is determined by the position identification information of the displayed map and the updated partial map data stored on the updated map storage means. Search by comparing with the position identification information, and if it exists, visualize the updated partial map data. Map-related information distribution system comprising: the update map data display processing means for displaying on those positions, and related information display processing means for displaying in a predetermined form the updated partial map-related information on the display means. 3. The map-related information distribution system according to claim 1, wherein the transmitting / receiving means of the host system and the terminal device transmits / receives information via a wireless line.