JP3857061B2 - Information distribution apparatus, information acquisition apparatus, and information distribution method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation system. Specifically, the present invention relates to a navigation system having a GPS receiver and other communication functions.
[0002]
[Prior art]
Navigation devices that display the current position of a car or a pedestrian, the surrounding map, and the route to the destination are widely used. Many of these navigation devices have a GPS receiver and a map database device in advance, and have a function of independently obtaining the current position and displaying a map in the vicinity thereof.
However, the GPS receiver is generally disadvantageous in that it is large in size and weight and power consumption when applied to a small portable information terminal or the like.
Further, there is a problem that the position cannot be detected when a location where GPS radio waves are difficult to receive, such as indoors or underground malls, or when the GPS receiver itself breaks down.
In addition, holding a map database with an enormous amount of information in advance is accompanied by an increase in the size, weight, power consumption, etc. of the storage device, which is a factor that impairs the convenience of the small navigation device.
[0003]
A navigation system disclosed in Japanese Patent Application Laid-Open No. 11-178066 is one that enables position detection without using a GPS receiver. This is to detect the reception level of radio waves from a plurality of pre-installed radio base stations and the base station number of each base station at the mobile terminal, list these detection information and send this to the location information calculation station, The location information calculation station returns the detected location information to the mobile terminal, and the mobile terminal displays a map and location information near the current location based on this location information.
According to this disclosed technology, there is an advantage that a navigation function can be realized by adding a small amount of equipment by using a terminal such as a mobile phone or a PHS, but there is a time lag until the position information is obtained after the information is detected by the mobile terminal. In addition, when requests are concentrated on a location information calculation station or network, there is a drawback that the response may be further reduced.
[0004]
Also, as a mechanism for detecting the current position without using GPS, there is a system that uses radio waves from a beacon base station for a long time, but it is necessary to simultaneously receive radio waves from multiple beacon base stations Therefore, there is a drawback in that it does not work effectively in places where there are many obstacles to radio waves such as in urban areas.
[0005]
On the other hand, as a technique that makes it unnecessary to store map information in the navigation device in advance, the information transmission method of map information disclosed in the Japanese Patent Laid-Open No. 11-178666 and the latest map disclosed in Japanese Patent Laid-Open No. 11-257975 are available. Although there are data transfer technologies, etc., all of these technologies obtain information while interacting with the information center via the information network, and this also has the disadvantage that the response deteriorates when the load on the information center or network increases. It was.
[0006]
[Problems to be solved by the invention]
As described above, the navigation system of the conventional example is accompanied by an increase in the load on the information network or the network along with an increase in the number of navigation terminals that receive services, resulting in a time lag until information presentation and the convenience is impaired. There was a problem.
[0007]
The present invention has been made to solve the above-mentioned problems, and transmits information between a plurality of information providing devices installed on the ground or indoor and underground spaces and the navigation device without going through an information network. Accordingly, it is an object of the present invention to provide a navigation system that is more simplified than the prior art and that has improved information transmission response.
[0008]
[Means for Solving the Problems]
An information distribution apparatus according to the present invention includes:
An information distribution device that is arranged at a predetermined arrangement position and distributes information to a distribution area within a certain range from the arrangement position,
An information recording unit for recording arrangement position related information associated with the arrangement position;
And a communication unit that distributes the arrangement position related information recorded in the information recording unit to the distribution area.
[0009]
The communication unit distributes the arrangement position related information by wireless communication to a wireless mobile terminal device in the distribution area.
[0010]
The communication unit distributes the arrangement position related information to wireless mobile terminal devices in the distribution area without specifying a distribution destination.
[0011]
The information recording unit records arrangement position information indicating a geographical position of the arrangement position as the arrangement position related information,
The communication unit distributes the arrangement position information recorded in the information recording unit.
[0012]
The information recording unit records, as the arrangement position related information, map information relating to a certain geographical range including the arrangement position,
The communication unit distributes the map information recorded in the information recording unit.
[0013]
The communication unit receives a transmission request for the arrangement position related information from the wireless mobile terminal device,
The arrangement position related information is transmitted to the terminal device based on the received transmission request.
[0014]
The information distribution apparatus is connected to an update instruction apparatus that instructs the information distribution apparatus to update the arrangement position related information.
The information distribution apparatus updates the arrangement position related information based on an instruction to update the arrangement position related information from the update instruction apparatus.
[0015]
The information acquisition apparatus according to the present invention is
An information acquisition device for acquiring information distributed from an information distribution device,
A receiving unit that receives arrangement position related information distributed from the information distribution apparatus and associated with an arrangement position of the information distribution apparatus;
And a display unit for displaying the arrangement position related information received by the receiving unit.
[0016]
The receiving unit receives the arrangement position related information distributed by wireless communication from the information distribution device when the information acquisition device is located in a wireless distribution area of the information distribution device.
[0017]
The receiving unit receives arrangement position information indicating a geographical position of an arrangement position of the information distribution apparatus as the arrangement position related information.
[0018]
The receiving unit receives, as received map information, map information related to a certain geographical range including an arrangement position of the information distribution device as the arrangement position related information.
[0019]
The information acquisition device further includes a position detection unit that detects a current position of the information acquisition device;
A selection unit that selects any one of the arrangement position information received by the reception unit and current position information indicating a current position detected by the position detection unit;
The display unit displays one of the arrangement position information and the current position information selected by the selection unit.
[0020]
The information acquisition device further includes a map information recording unit that records map information;
A selection unit that selects any one of the received map information received by the reception unit and the recorded map information recorded in the map information recording unit;
The display unit displays one of the received map information and the recorded map information selected by the selection unit.
[0021]
An information distribution method according to the present invention includes:
An information delivery method for delivering information to a delivery area within a certain range from a predetermined delivery position,
An information recording step of recording distribution position related information associated with the distribution position;
A communication step of distributing the distribution position related information recorded in the information recording step to the distribution area.
[0022]
In the communication step, the distribution position related information is distributed by wireless communication to a wireless mobile terminal device in the distribution area.
[0023]
The communication step is characterized in that the distribution position related information is distributed to a wireless mobile terminal device in the distribution area without specifying a distribution destination.
[0024]
The information recording step records distribution position information indicating a geographical position of the distribution position as the distribution position related information,
The communication step distributes the distribution position information recorded in the information recording step.
[0025]
The information recording step records map information relating to a certain geographical range including the delivery position as the delivery position related information,
In the communication step, the map information recorded in the information recording step is distributed.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
A preferred embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4 and 5. FIG.
FIG. 1 is a block diagram showing a minimum configuration in one embodiment of a navigation system according to the present invention.
In FIG. 1, 1 is a navigation device (information acquisition device) that moves together with a user to display information, 2 is an information providing device that is installed in a fixed location and transmits position information, map information, and the like to the navigation device 1. (Information distribution device).
In the navigation device, 11 is a receiving unit that receives radio waves transmitted from the information providing device 2, 12 is a reception status monitoring unit that monitors the reception status of radio waves by the receiving unit 11, and 13 is various controls in the navigation device. 14 is an input unit that receives various inputs from the user, 15 is a data storage unit that stores various data including map information, and 16 is a display unit 17 that displays various data stored in the data storage unit 15. A data conversion unit 17 that converts data into a data format that can be displayed on the display unit 17 is a display unit that presents various information to the user.
In the information providing apparatus, 20 is a transmission unit that transmits current location data, map data, and the like to the navigation device 1 on radio waves, 21 is a system control unit that performs various controls of the information processing device, and 22 is map data and position information. Is a data storage unit for storing.
[0027]
FIG. 2 is a diagram showing an arrangement example of the information providing device and the navigation device in the navigation system according to the present invention.
In FIG. 2, 34, 35, 36 and 37 are arrangement positions of information providing apparatuses corresponding to the information providing apparatus 2, and a plurality of information providing apparatuses are arranged in a mesh shape. Reference numeral 38 denotes the current position of the navigation device 1, 39 denotes the position of the navigation device 1 at the previous measurement, and 30 and 31 and 32 and 33 are transmitted from the information providing device 2 at the arrangement positions 34, 35, 36, and 37, respectively. This is a wireless zone in which the navigation device 1 can receive wireless radio waves.
[0028]
FIG. 3 shows an example of a partition for dividing the map around the arrangement positions 34, 35, 36, and 37 of the four information providing apparatuses in FIG.
In FIG. 3, reference numerals 41, 42, 43, 44, 45, 46, 47, 48, and 49 denote sections of divided map parcel information. FIG. 3 shows an example in which the periphery of each information providing device is divided into four meshes.
In this example, map parcels for a total of nine areas are prepared as data, with a square partition area having the vertex of the location of the four information providing devices as one parcel unit. Each information providing device stores four adjacent map parcel data in advance. For example, the information providing device 2 at the arrangement position 34 stores data of 41 map parcels 1, 42 map parcels 2, 44 map parcels 4, 45 map parcels 5.
[0029]
FIG. 4 shows an example of data transmission from the information providing apparatus 2 arranged at the arrangement position 34 in FIG. 3 to the navigation apparatus 1.
In FIG. 4, 51 is synchronization data indicating a data delimiter, 52 is arrangement position information in which arrangement position information of the information providing device 2 at the arrangement position 34 is stored, and 53, 54, 55, and 56 divide surrounding map information. Map parcel data stored.
In this example, one map parcel data 53 or 54 or 55 or 56 and position information 52 are paired as one unit of data, and synchronization data 51 is inserted between each data unit. These four data units are set as one period, and are continuously transmitted for a plurality of periods.
[0030]
FIG. 5 shows a display example of the navigation device 1 in the arrangement example of FIG.
In FIG. 5, 61 is a circle display showing the current position range of the navigation device 1, 62 is a display showing the moving direction of the navigation device 1, and 63, 64, 65 and 66 are received from the information providing device 2 at the arrangement position 34, respectively. Shows map parcel information display.
[0031]
Next, the operation will be described.
First, the information providing apparatus 2 in FIG. 1 is installed in advance in a location where position information such as latitude, longitude, altitude, etc. is known. These pieces of position information are stored in advance in the data storage unit 22 as current location data. At the same time, map information around the installation location of the information providing device 2 is also stored in the data storage unit 22. The system control unit 21 takes out the current location data and map information data stored in the data storage unit 22, delivers them to the transmission unit 20, and distributes them to the periphery in the form of radio waves in the data format shown in FIG. Data distribution from the information providing apparatus 2 is performed without specifying a distribution destination for the wireless distribution area.
[0032]
On the other hand, in the navigation device 1 of FIG. 1, the reception status monitoring unit 12 periodically checks the radio wave reception status of the reception unit 11. When the navigation device 1 moves with the user and reaches the vicinity of one of the information providing devices 2 (arrives in the wireless distribution area of the information providing device 2), the reception status monitoring unit 12 provides the information provided by the receiving unit 11. After confirming that the radio wave from the apparatus 2 has been received, the reception status monitoring unit 12 notifies the control unit 13 of the fact, and the control unit 13 instructs the receiving unit 11 to start receiving data. When receiving the synchronization data 51 of FIG. 4, the reception unit 11 starts actual data reception and transfers it to the control unit 13. The control unit 13 temporarily stores the received data in the data storage unit 15, and the data conversion unit 16 converts the map information and the position information stored in the data storage unit 15 into displayable data, which is displayed. By transferring to the unit 17, information is presented to the user of the navigation system.
[0033]
FIG. 5 shows an information display example of the navigation device 1. 5, 63, 64, 65, and 66 display map parcel data transmitted from the information providing apparatus 2 arranged at the arrangement position 34 in FIG. 2 as visible information, and 61 circle display is actually Is the range of the wireless zone (wireless distribution area) of the information providing device 2 at the arrangement position 34, which is displayed as the range in which the navigation device 1 can currently exist.
The radius information of the wireless zone (wireless distribution area) of the information providing device 2 may be held by the navigation device 1 as a default value, or may be included in the map parcel data and transmitted from the information providing device 2.
Since the navigation apparatus 1 receives the arrangement position information of the information providing apparatus 2, a circle display 61 centering on the arrangement position of the information providing apparatus 2 is created based on the received arrangement position information and the radius information of the wireless zone. can do.
The triangular display 62 indicates the traveling direction of the navigation device. When the navigation device 1 is moved to the previous measurement position 39 and the current position 38 shown in the arrangement example of FIG. The moving direction is obtained and displayed.
[0034]
In the above, the map information and the arrangement position information have been described as examples of information distributed from the information providing apparatus 2, but event information (for example, road construction information, traffic jam information, It is also possible to distribute event information, advertisement information, etc.).
[0035]
As described above, in the navigation system according to the present embodiment, since the position data and map data unilaterally transmitted from the information providing apparatus are simply displayed on the navigation apparatus side, the information providing apparatus and the navigation are provided. The apparatus can be greatly simplified as compared with the prior art. As a result of this simplification, each device can be reduced in size and weight, reduced in price, and reduced in power consumption.
[0036]
Embodiment 2. FIG.
Next, another embodiment according to the present invention will be described with reference to FIG.
FIG. 6 shows a second embodiment of the navigation system according to the present invention, which is a modification of the navigation system of FIG.
In FIG. 6, reference numeral 100 denotes a navigation device (information acquisition device) that moves together with the user to display information, and 200 denotes an information providing device that is installed in a fixed location and transmits position information, map information, and the like to the navigation device 1. (Information distribution device).
The relationship between the navigation device 100 and the information providing device 200 in FIG. 6 is the same as the relationship between the navigation device 1 and the information providing device 2 in FIG. 1, and the mutual cooperative operation is the same as in the first embodiment.
[0037]
In the navigation device 100, 101 is a transmission / reception unit that transmits / receives radio waves to / from the information providing device 200, 102 is a position detection unit that detects current position information of the navigation device 100 itself, and 103 holds map data in advance. It is a map data holding part (map information recording part) for storing.
The navigation device 100 in FIG. 6 includes a position detection unit 102 that can autonomously obtain the current position information of the navigation device 1 in FIG. 1 without obtaining information from the information providing device 200, and the information providing device 200. 1 includes a map data holding unit 103 that holds map information in advance without obtaining information, and the receiving unit 11 in FIG. The configuration is changed.
Other components 11 to 17 of the navigation device 100 are the same as those described in the first embodiment. However, as will be described later, the control unit 13 selects either the position information detected by the position detection unit 102 or the arrangement position information distributed from the information providing apparatus 200 and is held in the map data holding unit 103. It functions as a selection unit that selects either map data or map data distributed from the information providing apparatus 200.
[0038]
In the information providing apparatus 200, 201 is a transmission / reception unit that transmits / receives radio waves to / from the navigation apparatus 100, and 202 is a communication control for performing data communication with devices other than the navigation apparatus 100 via a network such as WAN or LAN. Part.
6 changes the transmission unit 20 in FIG. 1 to a transmission / reception unit 201 having a function capable of bidirectional data communication with the navigation device 100, compared to the information provision device 2 in FIG. And a communication control unit 202 for performing data communication with information devices other than the navigation device 100 via a network such as a LAN. Briefly, the mechanism of the first embodiment is added to the conventional navigation apparatus / system, and normally operates in the same manner as the conventional navigation apparatus / system, and when an abnormality such as a failure occurs, or the user enters the navigation apparatus / system in the navigation apparatus. For example, when it is desired to obtain information other than information stored in advance, information obtained from the information providing apparatus is used.
[0039]
Next, the operation of the navigation device 100 in FIG. 6 will be described first. In the navigation apparatus 100, first, the position detection unit 102 detects the current position of the apparatus and obtains current position information. Next, the control unit 13 obtains the current position information from the position detection unit 102, searches the map data stored in the map data holding unit 103 based on the current position information, and obtains map data around the current position. Then, the data conversion unit 16 converts the map data and the current position information into information that can be displayed on the display unit 17, and presents the information to the user via the display unit 17. The position detection unit 102 uses GPS, a vehicle speed / gyro sensor, or the like.
[0040]
In the above operation, when the position detection unit 102 breaks down or the GPS reception is impossible, the position detection unit 102 notifies the control unit 13 that position detection is impossible.
In response to this, the control unit 13 confirms whether or not the arrangement position information can be obtained from the information providing apparatus 200 through the transmission / reception unit 101, and if the arrangement position information is obtained, the arrangement of the information providing apparatus 200 from the information providing apparatus 200 The means for receiving the position information is selected, and thereafter the arrangement position information is acquired from the information providing apparatus 200 by the same operation as in the first embodiment, and the arrangement position information is presented on the display unit 17.
[0041]
Furthermore, in the above operation, if the map data holding unit 103 is broken or the map data holding unit 103 is configured in combination with a removable medium such as a CD-ROM and the medium is removed, The data holding unit 103 notifies the control unit 13 that the map data cannot be provided.
In response to this, the control unit 13 confirms whether map information can be obtained from the information providing apparatus 200 through the transmission / reception unit 101. If the map information is obtained, the control unit 13 receives the map information distributed from the information providing apparatus 200. Then, the map information is acquired from the information providing apparatus 200 by the same operation as in the first embodiment, and the map information is presented on the display unit 17.
[0042]
Further, when the user wants to obtain information other than the information included in the map data holding unit 103, the user inputs a request for presenting information from the information providing apparatus 200 to the control unit 13 via the input unit 14. To do. In response to this, the control unit 13 confirms whether or not the information desired by the user can be obtained from the information providing apparatus 200 via the transmission / reception unit 101 in the same procedure as when map data cannot be provided, and the information can be obtained. In this case, this is received from the transmission / reception unit 101 and operates to be presented to the user via the display unit 17.
[0043]
Further, in the normal state, the map data held in advance in the map data holding unit 103 is presented to the user, while the reception status monitoring unit 12 can always obtain map information from the information providing device 200 via the transmission / reception unit 101. When the map information is obtained, the control unit 13 can automatically prioritize and present the map information distributed from the information providing apparatus 200 to the user.
In this case, information other than the map information can be presented to the user by including in the information providing apparatus 200 event information (for example, road construction and advertisement information) in the wireless area in addition to the map information. .
[0044]
Next, the operation of the information providing apparatus 200 in FIG. 6 will be described.
The information providing apparatus 200 has a configuration in which a communication control unit 202 for performing data communication with an information device other than the navigation apparatus 100 via a network such as a WAN or a LAN is added to the information providing apparatus 2 in FIG. Yes.
With the above configuration, the information providing apparatus 200 can be remotely controlled from a control center (update instruction apparatus) connected via, for example, a WAN. Therefore, for example, the control center issues an instruction to the information providing apparatus 200 for updating map data in the information providing apparatus 200 or updating the regional information data, and the information providing apparatus 200 performs a predetermined update in accordance with the instruction. Centralized management such as
[0045]
In the configuration of FIG. 1, the data distribution direction is one-way from the information providing device 2 to the navigation device 1, whereas in the configuration of FIG. 6, the data distribution direction is bidirectional. The necessary data can be transmitted from the information providing apparatus 200 in response to a user request.
A device for performing wireless data communication such as Bluetooth can be applied to the transmission / reception unit 101 of the navigation device 100 and the transmission / reception unit 201 of the information providing device 200 in FIG. 6. For example, in Bluetooth, there is a built-in function that always checks whether there is a partner device that can communicate with each other in its own communicable area, and if it exists, automatically negotiates and starts communication. This is available.
[0046]
Thus, in the navigation system according to the present embodiment, the navigation device detects the current position autonomously and displays the map data, and detects the current position based on the information distributed from the information providing device and the map data. Since it can be used together with the display, even if it becomes impossible to detect the current position autonomously and display the map data due to a failure or the like, it is switched to acquire information from the information providing device. Thus, a smooth navigation service can be realized.
[0047]
In the navigation system according to the present embodiment, since the information providing apparatus can be remotely controlled from a control center or the like connected via a WAN or the like, centralized management such as update of map data and update of regional information data. Can be done.
[0048]
In Embodiments 1 and 2, the information distribution apparatus and the information acquisition apparatus according to the present invention have been described. However, the information distribution method according to the present invention can also be realized by the same processing procedure.
[0049]
The features of the present invention described so far are as follows.
The navigation system according to the present invention is capable of transmitting the position information and the surrounding map information to the navigation device, the information holding means for holding the position information and the surrounding map information, the position information being fixed at a place where the position information has been measured in advance. An information providing apparatus including a wireless transmission unit, a reception unit that receives information from the wireless transmission unit, and a display unit that displays the position information and surrounding map information acquired via the reception unit. It is characterized by that.
[0050]
The navigation device has a position detection unit of the device, and displays the position information from the information providing device as the current position of the device when the position detection unit fails or the position cannot be detected. It is characterized by.
[0051]
The navigation device has a map information holding unit that holds map information in advance, and acquires and displays map information from the information providing device when the map information holding unit fails.
[0052]
The navigation device has map information holding means for holding map information in advance and input means for receiving an operation from a user, and the map information held by the navigation system and the information provision in response to an input from the input means The map information acquired from the apparatus is selected and displayed.
[0053]
The navigation device has map information holding means for holding map information in advance and map information automatic receiving means for automatically receiving map information from the map information providing device, and the automatically received map information The map information from the providing device is automatically displayed.
[0054]
The information providing apparatus includes a communication unit different from the transmission unit, and is capable of updating the position information or the map information from the outside.
[0055]
【The invention's effect】
As described above, according to the present invention, since the position data and the map data unilaterally transmitted from the information providing device are simply displayed on the navigation device side, the information providing device and the navigation device are provided. It can be greatly simplified as compared with the prior art. As a result of this simplification, each device can be reduced in size and weight, reduced in price, and reduced in power consumption.
[0056]
In addition, as seen in the prior art, there is no means to acquire map data and location data while interacting with the center via a communication network, thus avoiding the problem of reduced data acquisition response due to increased load on the network or center device. it can.
[0057]
Further, according to the present invention, the navigation device uses autonomous detection of current position and display of map data together with detection of current position and display of map data based on information distributed from the information providing apparatus. Therefore, even if it becomes impossible to detect the current position autonomously and display the map data due to a failure or the like, switching to obtain information from the information providing device makes it smoother. A navigation service can be realized.
[0058]
In addition, according to the present invention, the information providing apparatus can be remotely controlled from a control center or the like connected via a WAN or the like, so that centralized management such as update of map data and update of regional information data can be performed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a system configuration of a navigation system according to an embodiment of the present invention.
FIG. 2 shows an arrangement example of the information providing device and the navigation device in the navigation system according to the present invention.
FIG. 3 is a diagram showing a positional relationship between divided map information data and each information providing device in the navigation system according to the present invention.
FIG. 4 is a diagram illustrating an example of transmission data transmitted from the information providing apparatus.
FIG. 5 is a diagram showing a display example of the current position and map information in the navigation device.
FIG. 6 is a block diagram showing a modification of the system configuration of the navigation system according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Navigation apparatus, 2 Information provision apparatus, 11 Reception part, 12 Reception condition monitoring part, 13 Control part, 14 Input part, 15 Data storage part, 16 Data conversion part, 17 Display part, 20 Transmission part, 21 System control part, 22 data storage unit, 100 navigation device, 101 transmission / reception unit, 102 position detection unit, 103 map data holding unit, 200 information providing device, 201 transmission / reception unit, 202 communication control unit

Claims (12)

An information distribution device that is arranged at a predetermined arrangement position and distributes information to a distribution area within a certain range from the arrangement position,
As the arrangement position related information associated with the arrangement position , a plurality of arrangement position information indicating a geographical position of the arrangement position and map information of a certain geographical range including the arrangement position are divided for each predetermined section. An information recording unit for recording map parcel data ;
A communication unit that adds the arrangement position information to each of the plurality of map parcel data and sequentially distributes each of the map parcel data to which the arrangement position information is added to the distribution area. Information distribution device. 2. The information distribution according to claim 1, wherein the communication unit sequentially distributes each map parcel data to which the arrangement position information is added by wireless communication to a wireless mobile terminal device in the distribution area. apparatus. 3. The communication unit sequentially distributes each map parcel data to which the arrangement position information is added to a wireless mobile terminal device in the distribution area without specifying a distribution destination. The information distribution device described in 1. The communication unit receives a transmission request for the arrangement position related information from the wireless mobile terminal device,
The information distribution apparatus according to claim 2, wherein the arrangement position related information is transmitted to the terminal apparatus based on the received transmission request. The information distribution apparatus is connected to an update instruction apparatus that instructs the information distribution apparatus to update the arrangement position related information.
The information distribution apparatus according to claim 1, wherein the information distribution apparatus updates the arrangement position related information based on an update instruction of the arrangement position related information by the update instruction apparatus. An information acquisition device for acquiring information distributed from an information distribution device,
A plurality of map parcel data distributed from the information distribution device and divided into predetermined sections of map information in a certain geographical range including the arrangement position of the information distribution device, the arrangement position of the information distribution device A receiving unit for sequentially receiving a plurality of map parcel data to which arrangement position information indicating each is added ;
Display of map information composed of the plurality of map parcel data received by the receiving unit, and a range in which an information acquisition device specified by arrangement position information added to any map parcel data can currently exist And an information acquisition device. The reception unit sequentially receives the plurality of map parcel data distributed by wireless communication from the information distribution device when the information acquisition device is located in a wireless distribution area of the information distribution device. The information acquisition apparatus according to claim 6 . The information acquisition device further includes a position detection unit that detects a current position of the information acquisition device;
A selection unit that selects any one of the arrangement position information received by the reception unit and current position information indicating a current position detected by the position detection unit;
The information acquisition apparatus according to claim 6 , wherein the display unit displays one of the arrangement position information and the current position information selected by the selection unit. The information acquisition device further includes a map information recording unit that records map information;
A selection unit that selects one of the received map information composed of the plurality of map parcel data received by the receiving unit and the recorded map information recorded in the map information recording unit;
The information acquisition device according to claim 6 , wherein the display unit displays one of the received map information and the recorded map information selected by the selection unit. An information delivery method for delivering information to a delivery area within a certain range from a predetermined delivery position,
As distribution position related information associated with the distribution position, there are a plurality of arrangement position information indicating the geographical position of the arrangement position and map information of a certain geographical range including the arrangement position divided into predetermined sections . An information recording step for recording map parcel data ;
A communication step of adding the arrangement position information to each of the plurality of map parcel data, and sequentially distributing each of the map parcel data to which the arrangement position information is added to the distribution area. Information distribution method. 11. The information distribution according to claim 10 , wherein the communication step sequentially distributes each of map parcel data to which the arrangement position information is added by wireless communication to a wireless mobile terminal device in the distribution area. Method. It said communication step, without specifying the destination, according to claim 10, wherein the position information to the wireless mobile terminal apparatus of the distribution area is sequentially deliver each of the added map parcel data was Information distribution method described in 1.

Images