JP2863118B2 - Map-related information distribution system - Google Patents

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 a fixed or mobile terminal device.

[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 locations. However, if you go to an unfamiliar area, information such as maps will be indispensable.

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

FIG. 12 is a block diagram showing an outline of the navigation system. An input unit 101 for inputting various instructions, a GPS unit 102 for receiving a radio wave from a satellite to detect a current position, and a map data CD-
It comprises 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 processing results.

[0005] In the navigation system having such a configuration, when the power is turned on, the GPS unit 102 receives a radio wave from a 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 an initialization process after the power is turned on, and then reads data 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, and a map on which the map data is visualized is displayed on the display unit 105.

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

[0008]

By the way, the road to the destination is not permanent, but is changed for the purpose of regional development or improvement of road conditions, or temporarily due to natural disasters or traffic accidents. In many cases, the connection is lost.

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

[0010] Therefore, the CD reflecting the latest road conditions
-Until the ROM is obtained, the CD-ROM before update
Will be used to guide the route to the destination. As a result, if there is a recently blocked road or a broken road on the route to the destination, it will be guided to the blocked road or to a temporarily disconnected road Such inconveniences have occurred.

This can be supplemented by radio traffic information. However, traffic information is targeted for highways and highways, and municipal roads in urban areas are not often targeted. For this reason, when there is a change in a municipal road in an urban area, it cannot be supplemented by radio traffic information, which is a factor that impairs the reliability of the navigation system.

An object of the present invention is to provide a map which allows a terminal device to acquire map data reflecting the latest road conditions and the like even when the latest CD-ROM storing map data is not obtained. It is to provide a related information distribution system.

[0013]

In order to achieve the above object, a map-related information distribution system according to the present invention comprises a host system having a map database and a plurality of map systems for receiving map data and map-related data from the host system. The host system includes an updating unit that updates map data stored in the map database in advance, and an update unit that adds and stores location identification information and update date information to the updated map data. A partial map database, search processing means for reading, in response to a request from one of the terminal devices, 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. Transmitting / receiving means for transmitting to the original terminal device, wherein each terminal device receives radio waves from a satellite and Current position detecting means for detecting the current position of the current position, external storage means for reading the map data at the current position detected by the current position detecting means from the CD-ROM, display means for displaying a map on which the map data is visualized, Input means for inputting distribution request information including the type and position identification information of data requested to the host system, transmitting / receiving means for transmitting the input distribution request information to the host system, and receiving from the host system Updated map data storage means for storing the updated partial map data, and whether or not there is updated partial map data located in the map read from the CD-ROM and displayed on the display means. Identification information of the 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 or not the map is updated for a specific area, a specific area name is input from the input means of the terminal device. Then, the terminal device creates distribution request information including position identification information indicating the area name and data type information indicating that the data type is the updated partial map data, and transmits the request to the host system from the transmission / reception unit. I 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.

The terminal device receiving the updated partial map data causes the updated partial map data to be stored in the updated map data storage means.

The updated partial map data is stored in a CD-RO
M is read from M to determine whether or not it is located in the map displayed on the display means. If it is, 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 a specific area is acquired and displayed at a 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 the illustrated embodiments.

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

The base station 4 includes mobile terminal devices 3a, 3b, 3
For example, when a mobile phone is used as the n wireless transmission / reception means, it corresponds to a base station of a mobile phone carrier.

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

The map database 1 of the host system 2 registers, for example, map data indicating a road map of Japan and map-related information such as sightseeing guides in each region.

The updated partial map database 6 includes:
When the map data or map-related information stored in the map database 1 is updated, only the updated data is stored.

The network 5 is connected to host terminals 7 installed in tourist associations and road management offices in each region.
The host terminal 7 is also configured so that map data and map-related information of the area in charge or the jurisdiction can be registered or updated.

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 station number 22, latitude and longitude 23, registration / update date 24, division 25, and data 26. For each update or registration date, place name, telephone station number,
Latitude, longitude, registration / update date, classification, and data are registered. Among them, 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, "Kannai-cho, Yokohama-shi, Kanagawa-ken" as the place name 21, "045" as the telephone number 22 and "045" as the latitude and longitude 23 as shown in FIG. 35 degrees 26 minutes north latitude, 139 degrees 39 minutes east longitude ", registered / updated 24
"Month 1", "Map" as the division 25, and "Map data of the corresponding place name" as the data 26 are registered.

This is registered in exactly the same way 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 relating to the same area is updated a plurality of times, it is registered for each update date.

This is to determine whether or not there is updated partial data to be transmitted according to the date of issuance 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 requested by both devices for distribution on "September 11, 1994" If the map data of C is updated, it is considered that the updated contents of the area C have already been included in the CD-ROM of the mobile terminal device B, so there is no need to transmit the updated data of the area C. The update content of the area C is not reflected at all on the CD-ROM of the mobile terminal device A, 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 relating to the same area is updated a plurality of times, the map data or the map-related information is registered for each update date and included in the distribution request information from the mobile terminal device. The date of issue of the included CD-ROM is compared with the update / registration date of the map data of the requested area. If the date of issue of the CD-ROM is older, the map data of the requested area or map-related data is compared. The data is transmitted to the request source, and if the date of issue of the CD-ROM is newer, the map data or the map-related data of the requested area is not transmitted to the request source.

In the map database 1, the latest map data and map-related information information updated by the update work are registered and used when a new CD-ROM is issued.

The date of issuance 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 can be read from the CD-ROM, the read issue date can be used.

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

That is, a GPS unit 31 that receives a radio wave from a satellite to detect the current position of the own device,
The map data at the current position detected by No. 1 is stored in a CD-RO
An external storage unit 33 read from M32, a display unit 34 for displaying a map in which map data is visualized, distribution request information including a type of data and position identification information required for the host system 2, and information such as a destination are input. Input unit 35,
A transmission / reception unit 36 for transmitting the input distribution request information to the host system 2 via the base station 4, and an updated map data storage unit 37 for storing 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, a process for requesting distribution of latest map data, and the like.
It is composed of

Here, the data processing section 38 is a CD-RO
Whether or not there is updated partial map data read from M32 and located 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 updated partial map data is searched by comparing with the position identification information of the updated partial map data, and if there is, the updated partial map data is visualized and displayed at a corresponding position. Related information display processing means for causing the display section 34 to display the information in a predetermined format.

FIG. 4 is a diagram showing a frame structure of a distribution request transmitted from the mobile terminal devices 3a, 3b, 3n to the host system 2, in a case where distribution of map data stored in the map database 1 is requested. 4A, the map information request command 41 and the position identification information 4
2. Source CD-ROM issue date 43, Source ID
(For example, a mobile telephone number) 44 and transmit it.

When requesting distribution of map-related information stored in the map database 1, as shown in FIG. 4B, a map-related information request command 45, position identification information 42, and a source CD- A frame including the ROM issue date 43 and the source ID (for example, mobile telephone 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,
Location identification information 42, source CD-ROM issue date 4
3. Create and transmit a frame composed of a source ID (for example, mobile telephone number) 44.

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

In response to such a distribution request request, the host system 2 transmits 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 the area ID 54, the latitude / longitude 55, and the registration / update date 56 is created and returned to the requesting mobile terminal device.

Here, the type ID 52 is for distinguishing 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 a telephone number.

In this case, the area ID 54 and the latitude and longitude 55
The reason is that when the map of the updated portion is pasted and displayed on the map of the corresponding area, the position where the information of the latitude and longitude is present can be more accurately determined.

That is, when requesting map data from the mobile terminal device, for example, even if only a region name is designated and requested, the host system 2 returns latitude and longitude information 55 in addition to the region name. Based on this, the map of the updated portion is accurately replaced and displayed on the map of the corresponding area.

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

FIG. 6 is a flowchart showing an outline of the data distribution processing of the host system 2. First, it is determined whether or not a distribution request request from the mobile terminal device has been received (step 61). In this case, it stands by in a reception waiting state.

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

That is, when a distribution request request having the frame configuration shown in FIG. 4A is received, the request information is determined by the map information request command 41 to be the map information in the map database 1, and the position identification is further performed. The request area is determined based on the information 42. The issue date 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 request, and the telephone number of the source mobile terminal device is assigned to the source ID 4.
Determined by 4.

When a distribution request having the frame structure shown in FIG. 4B is received, the request information is determined to be map-related information in the map database 1 by the map-related information request command 45, and further, Position identification information 42
To determine the required area. Also, the CD-ROM 32
Of the mobile terminal device that has transmitted the distribution request request is determined by the issue date 43 of the CD-ROM 32 attached to the mobile terminal device, and the telephone number of the mobile terminal device of the transmission source is determined by the transmission source I.
Determined by D44.

Similarly, when a distribution request having the frame configuration shown in FIG. 4C is received, the request information is determined by the map information request command 46 to be the map information in the updated partial map database 6. Further, position identification information 4
2 is used to determine the required area. CD-ROM3
The issue date of the CD-ROM 32 attached to the mobile terminal device that has transmitted the distribution request request is determined based on the issue date 43 of No. 2 and the telephone number of the mobile terminal device of the caller is determined by the caller ID 44.

When a distribution request having the frame configuration shown in FIG. 4D is received, the request information is updated by the map-related information request command 47 to the updated partial map database 6.
It is determined that the information is map-related information in the area, and the requested area is further determined based on the position identification information 42. CD-R
The issue date 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 phone number of the mobile terminal device of the caller is determined by the caller ID 44.

Next, map data or map-related information of the area specified 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 a map information distribution service contract based on the telephone number of the mobile terminal device of the transmission source. If the mobile terminal has not subscribed, a message indicating "distribution is impossible" is created and transmitted to the requesting mobile terminal device.

When the map data or the map-related information of the area specified by the position identification information 42 is searched from the updated partial map database 6, whether the map data or the map-related information of the area corresponding to the updated partial map database 6 exists. A search is performed using the position identification information 42 as a search key.

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 it matches the requested data division, the update / registration date is compared with the update / registration date 24 and the CD-ROM issue date 43 in the distribution request, and which 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 issuance date of M32 is newer, a message such as "no change in map" or "no change in map-related information" is sent to the request source.

When the map data or the map-related information of the requested area 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 of the area have not been updated, a message such as "no change in map" or "no change in map-related information" is transmitted to the request source.

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

FIG. 7 is a flowchart showing an outline of the processing in the mobile terminal device. The data processing section 38 performs an initialization processing upon turning on the power, and further inputs information on the current position detected by the GPS section 31. The map data in 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 determined whether the content selected by the command menu is "input destination", "reference to regional information", or "acquire map update information" (steps 72, 73, 72).
74).

When "destination input" is selected, the user is prompted to input a destination, and if the destination is entered in response to any of the information of the place name, telephone station number, latitude and longitude (step 76). ), Using this as position identification information on a CD
-Search the ROM 32 to see if there is map data for the area (step 76).

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

By sequentially performing the trace processing to the destination in the order of the first destination, the second destination, and the third destination, it is possible to trace the map data to the final destination.

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

On the other hand, the map data of the destination is a CD-ROM.
32, the host system 2
(Step 80).

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

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

The reason for temporarily disconnecting the communication line with the host system 2 is that, by illegally inputting the caller ID (telephone number) of a third party, the person who actually requested the distribution is prevented from being charged. It is to prevent.

After a lapse of a predetermined time, the communication line between the host system 2 and the requesting mobile terminal device is re-established by a calling procedure from the host system 2 to the requesting mobile terminal device, and the reply shown in FIG. When the map data of the destination 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 configuration shown in FIG. The stored map data is used when moving to a destination.

It should be noted that the same processing is used to refer to map-related information such as tourist information of a destination from the map database 1. In this case, the map data and the map-related information may be simultaneously searched and transmitted to the mobile terminal device.

On the other hand, if "Refer to map-related update information" is selected (step 73), the user is prompted to input a destination, and in response to that, the destination is determined by any of the information of the place name, telephone number, latitude and longitude. If entered (Step 8
1), the data processing unit 38 creates a distribution request request frame shown in FIG.
6, a communication line with the host system 2 is established via the base station 4 and the network 5, and then transmitted from the transmitting / receiving unit 36 (step 82).

Thereafter, the mobile terminal device temporarily disconnects the communication line with the host system 2 and enters a state of waiting for a reply from the host system 2.

After the predetermined time has elapsed, when the host system 2 returns the map-related update information of the destination by the reply frame shown in FIG. 5, the returned map-related update information is stored in the update map data storage unit 37. 2 is stored in the data configuration shown in FIG.
4).

At this time, if a 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).

If "acquire map update information" is selected (step 74), the user is prompted to input a destination, and in response, the destination is input using any of the information of the place name, telephone number, latitude and longitude. If it has been done (step 86), the data processing unit 38 uses this as position identification information in FIG.
A transmission request request frame is created, a 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).

Thereafter, the mobile terminal device temporarily disconnects the communication line with the host system 2 and shifts to a 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 return frame shown in FIG. 5 after a predetermined time has elapsed, the returned updated partial map data is stored in the updated map data storage unit 37. After storing the data in the data configuration shown in FIG. 2, it is visualized on a map and displayed on the display unit 34 (step 88).

Here, when displaying the map at the current position detected by the GPS unit 31 by the update map data display processing, the data processing unit 38 reads out the data from the CD-ROM 32 and displays it on the display unit 34. The presence / absence of the updated partial map data located in the current map 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. Then, if there is, the updated partial map data is visualized and displayed at a corresponding position.

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

In this case, the updated partial map 82 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 the display.

FIG. 9 is a view 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 out from the CD-ROM 32 and displayed. The “x” indicated by reference numeral 95 indicates that the road is closed.

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 at a predetermined position on the display screen. .

The user of the mobile terminal device can know the sightseeing spots and various local events by using the area guide information.

As shown in FIG. 11, the distribution service contractor list database 8 in the host system 2 stores the name of the contractor who has made a distribution service contract for map data and map-related information, the telephone number 812, and the contract period. 813 and a billing discount rate 814 are stored.

When the host system 2 receives a request for distribution of map data and map-related information from a user of the mobile terminal device, the telephone number corresponding to the transmission source ID 44 is registered in the distribution service contractor list database 8. It checks whether it is registered or not, and if not registered, returns a message to the effect that the distribution service cannot be received to the requesting mobile terminal device.

However, if registered, the contract period is checked, and if the contract period has not expired, the map database 1 or the updated partial map database 6 is searched, and then the communication with the requesting mobile terminal device is performed. Caller ID for line
Establish according to 44 and send the search result. At this time, the charge discount rate 814 of the contractor is checked, and the
Send a message of the billing amount. It should be noted that the actual collection of the billing amount is performed by requesting a bank to perform a debit process from a bank account.

In this case, instead of the telephone number 812, the CD-
A method of registering the serial number of the ROM 32 is also conceivable. However, if the CD-ROM itself is subleased to a third party, an authorized purchaser will be charged, which may cause trouble. Therefore, since a person who directly benefits is determined by determining a billing destination by using the telephone number 812, troubles caused by the billing can be prevented.

As described above, according to the map-related information distribution system of this embodiment, the following effects can be obtained.

(1) In a mobile terminal device, a CD-R
Even if the date of issuance of the OM is old, it is possible to obtain the latest updated partial map data or map-related update information relating to a specific area and provide the user with the latest road conditions and the like.

(2) The date of issue of the CD-ROM is compared with the update / registration date of the map data of the requested area, and the CD-R
If the date of issuance of the OM is older, the map data or map-related data of the requested area is transmitted to the request source, and the CD-
If the ROM issuance date is newer, the map data or map-related data of the requested area will not be sent to the requester, preventing unnecessary occupation of the communication line.
Also, unnecessary duplicate data can be prevented 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 region ID 5
4 and the latitude and longitude 55 are transmitted separately, so that the map of the updated part can be accurately replaced and displayed on the map of the corresponding area.

(4) When the host system receives a request to distribute map data and map-related information from the user of the mobile terminal device, the telephone number corresponding to the transmission source ID is registered in the distribution service contractor list database. Only when this is the case, the search result of the map database 1 or the updated partial map database 6 is transmitted, so that a reference request from a person other than the distribution service contractor can be excluded.

(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, communicates with the mobile terminal device according to the source ID. In this case, the search result is transmitted to the mobile terminal device having an invalid source ID, and the illegal acquisition of map data and map-related information can be eliminated. .

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

In the above embodiment, an example in which the host system and the mobile terminal device are connected by a wireless line has been described. However, it is needless to say that the present invention can be similarly applied to a case where the host system and the mobile terminal device 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) In a mobile terminal device, a CD-R
Even if the date of issuance of the OM is old, it is possible to obtain the latest updated partial map data or map-related update information relating to a specific area and provide the user with the latest road conditions and the like.

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

[Brief description of the 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 a data distribution process of the host system.

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

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

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

FIG. 10 is an explanatory diagram of a specific example in which map-related update information is displayed on a map on a 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 ... distribution service contractor list database, 27 ... location identification information, 31 ... GPS unit, 32 ... CD-ROM, 33
... an external storage unit, 34 ... a display unit, 35 ... an input unit, 36 ... a transmission and reception unit, 37 ... an updated map data storage unit, 38 ... a data processing unit.

────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code FIG06F 15/401 340A 15/62 335 (56) References JP-A-5-232865 (JP, A) JP-A-5-11693 ( JP, A) JP-A-3-255309 (JP, A) JP-A 64-70790 (JP, A) JP-A 8-85488 (JP, A) JP-A 8-305282 (JP, A) JP Hei 5-159039 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G09B 29/00 G01C 21/00 G06F 17/30 G06T 1/00 G08G 1/0969

Claims (3)

(57) [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 the map database in advance. Updating means for updating the updated map data; an updated partial map database for storing the updated part of the map data with location identification information and updated date information added thereto; and in response to a request from any 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 a transmitting and receiving unit for transmitting a search result to the requesting terminal device. The apparatus receives a radio wave from a satellite to detect a current position of the own apparatus, 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 obtained by visualizing map data, input means for inputting distribution request information including data type and position identification information requested by the host system, and Transmitting / receiving means for transmitting the distribution request information to the host system, updated map data storage means for storing updated partial map data received from the host system, read from the CD-ROM, and displayed on the display means. The presence or absence of the updated partial map data located in the map is determined by determining 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. Search by comparing,
A map-related information distribution system comprising: an update 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 receiving map data and map-related data from the host system. An updating means for updating map data and map-related data stored in advance in a database; and an updated partial map database for storing updated map data and map-related data with location identification information and update date information added thereto. Search processing means for reading, from the updated partial map database, updated partial map data or updated partial map data corresponding to the position identification information included in the request in response to a request from the terminal device; Transmitting / 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 the ROM, display means for displaying a map obtained by visualizing map data, input means for inputting distribution request information including data type and position identification information requested by the host system, and Transmitting / receiving means for transmitting the distribution request information to the host system, updated map data storing means for storing updated partial map data or updated partial map related information received from the host system, and reading from the CD-ROM. Whether or not there is updated partial map data located in the map displayed on the display means is determined based on the position identification information of the displayed map and the updated partial map data stored in the updated map storage means. Search by comparing with location identification information, and if present, visualize the updated partial map data and 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 transmission / reception means of the host system and the terminal device transmits / receives information via a wireless line.