JP4232089B2 - Data communication apparatus, data communication system, and control method for data communication apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data communication device, a data communication system, and a control method for the data communication device, and can be applied to data communication by a wireless communication device mounted on a vehicle, for example. In the present invention, data is transmitted and received only in a region where a connection selected in advance from a plurality of connectable regions that can be connected by wireless communication is permitted. It is possible to improve data communication and easily perform data communication.
[0002]
[Prior art]
Conventionally, in the field of data communication, infrastructure has been developed so that it can be connected to a network such as the Internet at any location.
[0003]
In such a network, security is ensured by user authentication using a password or the like.
[0004]
On the other hand, for example, Japanese Patent Application Laid-Open No. 9-284203 proposes a method of reliably performing data communication by confirming a region with good communication and performing data communication only in this region with good communication. Has been made.
[0005]
[Patent Document 1]
JP 9-284203 A
[0006]
[Problems to be solved by the invention]
By the way, if you can connect to the network in any place like this, it is convenient, but even if you perform user authentication with a password etc., there is a risk of unauthorized access by a third party impersonated as a legitimate user is there.
[0007]
In addition, there is a problem that desired data cannot be acquired unless the user himself / herself operates the connection to the network.
[0008]
The present invention has been made in view of the above points, and proposes a data communication apparatus, a data communication system, and a control method for the data communication apparatus that can improve data security and easily perform data communication as compared with the prior art. It is what.
[0010]
[Means for Solving the Problems]
  To solve this problemClaim1In the invention of the present invention, the present invention is applied to a data communication device that transmits desired data to a movable device by wireless communication from a movable device, and a device that is movable based on the connection of the movable device. If the current position is detected and the current position is an area that allows connections that are pre-selected from multiple connectable areas where movable devices can be connected,Further, based on the schedule relating to the movable device, the time of connection from the movable device is determined, and based on the determination result,Send the data to the movable device.
[0011]
  And claims2In the present invention, the movable device is detected by the current position detecting means when applied to the data communication system in which data is transmitted from the host device to the movable device by connection by wireless communication from the movable device. Based on the current location, if the current location is an area where a connection selected in advance from a plurality of connectable areas connectable to the host device is permitted, the host device requests transmission of data, and the host device Detecting the current position of the movable device based on the connection of the movable device in response to a request from the movable device, and if the current location is an area where a preselected connection is allowed,Further, based on the schedule relating to the movable device, the time of connection from the movable device is determined, and based on the determination result,Send the data to the movable device.
[0013]
  And claims3In the present invention, the present invention is applied to a control method of a data communication device that sends desired data to a movable device by wireless connection from a movable device, and is movable based on the connection of the movable device. If the current position of the active device is a region where a connection pre-selected from a plurality of connectable regions to which a movable device can be connected is permitted,Further, based on the schedule relating to the movable device, the time of connection from the movable device is determined, and based on the determination result,Send the data to the movable device.
[0015]
  And claimsAccording to the invention of claim 1, claim 2, or claim 3, climbing in advanceFor connection from a movable device in an unrecorded area, the provision of data can be refused, thereby improving the security as compared with the conventional case and easily performing data communication.Further, based on a schedule relating to the movable device, the time of connection from the movable device is determined, and based on the determination result, the data is sent to the movable device, Security can be further improved.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
[0018]
(1) Configuration of the embodiment
FIG. 2 is a block diagram showing a data communication system according to the embodiment of the present invention. In this data communication system 1, a management server 2 and network terminal devices 3 </ b> A to 3 </ b> E are connected by a network 4. Here, the network 4 is, for example, an in-house WAN (Wide Area Network). In addition to the management server 2 and the network terminal devices 3A to 3E, computers installed in factories and offices in various places are connected to transmit and receive data. It is made to do.
[0019]
In this data communication system 1, an area in which data communication is performed in advance with respect to a vehicle 5 to be managed with respect to the in-vehicle device 6 mounted on the vehicle 5 from among the areas in which data communication is possible using the network 4. The data communication is performed with the in-vehicle device 6 only in the area registered in advance. At this time, data communication is restricted by the advance registration and the schedule relating to the vehicle 5, thereby ensuring security.
[0020]
The network terminal devices 3A to 3E are computers installed in an area where data communication with such an in-vehicle device 6 is planned. Send and receive data.
[0021]
Here, FIG. 3 is a block diagram showing the network terminal device 3 </ b> A together with the in-vehicle device 6. Note that the network terminal devices 3B to 3E are configured almost the same as the network terminal device 3A, and thus redundant description thereof will be omitted. Here, the network terminal device 3A is a computer capable of data communication with the management server 2 via the network 4 and capable of data communication with the in-vehicle device 6 by wireless communication. For this reason, the network terminal device 3A is connected to the network 4 via the interface (I / F) 10 and secures a work area in the random access memory (RAM) 12 according to the recording in the read only memory (ROM) 11 to thereby provide a hard disk device. A processing program recorded in the (HDD) 13 is executed by a central processing unit (CPU) 14. The network terminal device 3 </ b> A is provided with a communication unit 15 for data communication with the in-vehicle device 6.
[0022]
Here, the communication unit 15 transmits and receives various data to and from the in-vehicle device 6 by wireless communication using an infrared ray or a wireless communication wave via a transmission / reception unit (not shown), and notifies the central processing unit 14 of these data. Here, in this embodiment, a radio communication wave based on a wireless LAN (Local Area Network) is applied to the radio communication, and an antenna that transmits and receives the radio communication wave according to the radio LAN is used in the transmission / reception unit. Are processed by a signal processing circuit and an interface for sending data and control data related to transmission / reception with the in-vehicle device 6 to the main body of the communication unit 15. In data communication using infrared rays, the transmission / reception unit drives the light emitting unit, the light receiving unit, and the light emitting unit, and processes the light reception result of the light receiving unit, and the data related to the processing of the signal processing circuit with the main unit. It consists of an interface that inputs and outputs between them. In this embodiment, the communication unit 15 is provided with the transmission / reception unit in the parking lot of the vehicle 5, whereby the network terminal device 3 </ b> A communicates with the in-vehicle device 6 of the vehicle 5 when the vehicle 5 approaches the parking lot. Data communication between them is possible.
[0023]
The central processing unit 14 receives a request for data communication from the in-vehicle device 6 based on the data from the in-vehicle device 6 obtained from the communication unit 15 in this manner, and notifies the management server 2 of this request. Further, data communication between the management server 2 and the in-vehicle device 6 is relayed according to the instruction of the management server 2 by this request.
[0024]
On the other hand, the in-vehicle device 6 is configured by an information processing device having a navigation function. That is, in the in-vehicle device 6, the antenna 21 is an antenna related to GPS (Global Positioning System), receives radio waves from GPS satellites, and outputs them to the signal processing circuit 22. The playback device 23 plays back an optical disk such as a compact disk, CD-ROM, or DVD under the control of a central processing unit (CPU) 24 and outputs the playback result to the signal processing circuit 22. The signal processing circuit 22 performs signal processing on the signal output from the antenna 21, thereby outputting various data for current position measurement to the central processing unit 24. Thus, in this embodiment, this data is processed by the central processing unit 24 so that the current position can be detected. Further, the signal processing circuit 22 performs digital / analog conversion processing on the audio data related to the playback result of the playback device 23 and outputs the audio data to the amplification circuit 25. The amplification circuit 25 drives the speaker 26 by the output of the digital / analog conversion processing. Thereby, in this vehicle-mounted apparatus 6, music etc. can be enjoyed in the vehicle. Further, the signal processing circuit 22 converts the audio data output from the central processing unit 24 into an analog signal instead of the audio data from the reproducing device 23 and outputs the analog signal to the amplification circuit 25. As a result, the in-vehicle device 6 can provide voice guidance related to the navigation function. The signal processing circuit 22 outputs the reproduction results by the reproducing device 23 other than the audio data to the central processing unit 24 according to an instruction from the central processing unit 24.
[0025]
The communication unit 27 has a configuration corresponding to the communication unit 15 of the network terminal device 3 </ b> A, and transmits and receives various data to and from the communication unit 15 under the control of the central processing unit 24. The image processing unit 28 generates image data under the control of the central processing unit 24 and displays it on the display unit 29. As a result, the in-vehicle device 6 displays an image such as a map related to the navigation function via the display unit 29 and can confirm various data acquired from the network 4 via the communication unit 27. .
[0026]
The operation unit 30 includes a remote commander of the in-vehicle device 6 and notifies the central processing unit 24 of an operation by the user. The central processing unit 24 secures a work area in a random access memory (RAM) 32 and executes a processing program recorded in a hard disk device (HDD) 31, thereby responding to the operation of the operation unit 30 by the user. Control overall operation.
[0027]
That is, the central processing unit 24 processes the data from the antenna 21 output from the signal processing circuit 22 to detect the current position. Further, when the user gives directions, the map or the like is displayed on the display unit 29 based on the information on the current position detected in this way, the map data obtained by reproducing the reproducing device 23, and the like. At this timing, a sound is output from the speaker 26, thereby guiding the user to the destination. When the user instructs viewing of the music content and video content, the playback device 23 is driven to play back the music content and video content, and these are provided to the user from the speaker 26 and the display unit 29.
[0028]
On the other hand, when the user instructs confirmation of various data acquired from the network 4, a list of files based on these data is displayed on the display unit 29. In this display, the user's selection is accepted and the corresponding application program is activated to display the contents of the file. Specifically, when the user gives an instruction to browse the email, the central processing unit 24 activates the mail software and displays the email. For various statistics and news files, the corresponding browsing software is activated to display the contents of these files. As a result, the vehicle-mounted device 6 can check and examine various types of information even during movement by the vehicle 5.
[0029]
The central processing unit 24 acquires data from the management server 2 via the communication unit 27 and the network 4 in an area registered in advance by executing a predetermined processing procedure. That is, in this in-vehicle device 6, the areas that can be wirelessly communicated with the network terminal devices 3 </ b> A to 3 </ b> E are recorded and held in the management server 2 as areas that can be connected to the management server. The area where the connection is permitted is registered in the management server 2. In addition, at the time of registration, a range where connection is permitted is registered for each area where each connection is permitted.
[0030]
The central processing unit 24 acquires information on the area and range in which the connection registered in the management server 2 is permitted in this way from the management server 2, records it in the hard disk device 31, holds it, and based on this record Then, the management server 2 is requested to acquire data. FIG. 4 is a chart showing the area and range information for which the connection recorded in the hard disk device 31 is permitted. In the recording of the hard disk device 31, each communication is permitted in correspondence with a predetermined registration mark so that an area where communication is permitted can be confirmed by displaying a specific mark on the map display by the navigation function. The region is registered. In FIG. 4, this registration mark registers the head office, Atsugi factory, Kagoshima factory, Oita factory, and Nagano factory as areas where communication is permitted. In addition, in the recording of the hard disk device 31, the location information in which the transmission / reception units of the network terminal devices 3A to 3E that are responsible for each region are installed is detected by the in-vehicle device 6 by the GPS system. The position information is recorded so as to correspond to the position information. A range in which communication is permitted is recorded centering on the position specified by the position information. As a result, in the example of FIG. 4, at the head office, the range of 100 [m] squares, centering on the transmission / reception unit of the corresponding network terminal device, is registered as an area where communication is permitted. ing.
[0031]
The central processing unit 24 acquires predetermined data from the management server 2 by executing the processing procedure of FIG. 1 based on the registration of the hard disk device 31.
[0032]
That is, when the central processing unit 24 starts operation, the central processing unit 24 proceeds from step SP1 to step SP2, and detects the current position by the GPS system. In the subsequent step SP3, the current position detected by the GPS system is compared with information on the area where communication is permitted recorded in the hard disk device 31, and it is determined whether or not the current position is an area where communication is permitted. To do. If a negative result is obtained here, the central processing unit 24 returns to step SP2.
[0033]
Thereby, the central processing unit 24 repeats the processing procedure of steps SP2-SP3-SP2 until the vehicle 5 moves to an area where communication is permitted, and when the current position is an area where communication is permitted, Information such as e-mail is acquired by confirmation of the management server 2. That is, when a positive result is obtained in step SP3, the central processing unit 24 proceeds from step SP3 to step SP4 and activates the communication unit 27. In the subsequent step SP5, authentication processing is executed with the network terminal device installed in this area by sending and receiving the identification code set in the in-vehicle device 6, and the network terminal device and the network 4 are also used. If the authentication process is executed with the management server 2 and authentication cannot be performed correctly, the process returns from step SP5 to step SP2.
[0034]
On the other hand, if the authentication is correctly performed in step SP5, the information on the current position detected in step SP2 is notified to the management server 2 in the subsequent step SP7, and the communication is permitted in the management server 2 by this notification in the subsequent step SP8. It is judged whether it was done. If a negative result is obtained here, the central processing unit 24 stops the operation of the communication unit 27 and then returns from step SP8 to step SP2. On the other hand, if a positive result is obtained in step SP8, the process proceeds to step SP9, the past access log recorded in the hard disk device 31 by data communication with the management server 2, the e-mail held in the management server 2, etc. It is detected whether there is a file that has not yet been downloaded in the management server 2 by comparison with the record.
[0035]
In the subsequent step SP10, the central processing unit 24 determines whether or not such a file exists. If a negative result is obtained here, the operation of the communication unit 27 is stopped and then the process returns to step SP2. On the other hand, if an affirmative result is obtained in step SP10, the process moves to step SP11, the corresponding file is downloaded from the management server 2 and recorded in the hard disk device 31, and the acquisition of this file is confirmed via the display unit 29 by the user. Notify In the subsequent step SP12, the current position is detected by the GPS system, and in the subsequent step SP13, the detected current position is compared with the information on the area where communication is permitted recorded in the hard disk device 31, and communication is permitted. Determine if you are out of the area.
[0036]
If a negative result is obtained here, the central processing unit 24 returns to step SP9 and then downloads the file. On the other hand, if a positive result is obtained in step SP13, the central processing unit 24 proceeds to step SP14 and operates the communication unit 27. Is then returned to step SP2.
[0037]
As a result, in the in-vehicle device 6, a data communication device that acquires desired data from the management server 2 that is a host device by wireless communication is configured, and the antenna 21, the signal processing circuit 22, and the central processing unit 24 determine the current position. Current position detecting means for detecting is configured. The communication unit 27 constitutes a wireless communication unit that can be connected to the host device, and the central processing unit 24 is an area in which a connection with a current position selected in advance based on a detection result by the current position detection unit is permitted. In this case, a control unit is configured to connect to the host device by wireless communication means and acquire desired data from the host device by confirmation in the host device.
[0038]
Corresponding to such a configuration, the management server 2 is configured as shown in FIG. In other words, the management server 2 is a data communication device that sends desired data to a movable device through a wireless communication connection from the in-vehicle device 6, which is a movable device, and is connected to the network by an interface (I / F) 41. 4 is connected. The management server 2 secures a work area in the random access memory (RAM) 43 according to the recording in the read only memory (ROM) 42 and executes the processing program recorded in the hard disk device (HDD) 44 in the central processing unit 45. Thus, various data provided to the in-vehicle device 6 is acquired from various information devices connected to the network, and this information is provided to the in-vehicle device 6.
[0039]
Therefore, in the management server 2, databases 46 to 48 are constructed in the hard disk device 44. That is, in these databases 46 to 48, the schedule database 46 is constructed by accumulating schedule data for a plurality of vehicles 5 that are managed by the management server 2. Specifically, in this embodiment, the schedule database 46 obtains schedule information as appropriate from a computer provided in a secretarial room of a user who uses the vehicle 5 and accepts a schedule change. Built. As a result, the management server 2 determines the access time from the in-vehicle device 6 based on the record of the schedule database 46 to ensure security.
[0040]
On the other hand, the file database 47 is constructed by accumulating files to be downloaded to the in-vehicle device 6. In this embodiment, as shown in FIG. 6, the latest e-mail, various documents, news / overseas information, gazette-related videos, etc. are applied as the file to be downloaded to the in-vehicle device 6, and the latest e-mail is applied. In this case, the e-mail held unopened is accumulated in synchronization with the operation of the inbox on the computer of the user who uses the vehicle 5. Also, in the document, what has been conventionally provided by printing to the user who uses the vehicle 5 is provided in a file format before printing. News / overseas information is provided by digitizing information provided by industry papers.
[0041]
On the other hand, the communication permitted area database 48 is formed by registering the area and range information for which communication described above with reference to FIG. In addition, in this communication permitted area database 48, in addition to the current position information corresponding to the position information detected by the GPS system of the in-vehicle device 6, addresses assigned to the corresponding network terminal devices 3A to 3E on the network 4 are stored. It is made to be recorded. The management server 2 detects the current position of the in-vehicle device 6 by connection from the in-vehicle device 6 on the network 4 by this address.
[0042]
Accordingly, the central processing unit 45 adds information related to the vehicle 5 to the communication permitted area database 48 by pre-registration, and data communication between the vehicle 5 and the vehicle 5 in response to the addition. The in-vehicle device 6 is configured to record information on the area where the above-described communication is permitted.
[0043]
FIG. 7 is a flowchart showing the processing procedure of the management server 2 related to the connection from the in-vehicle device 6. The central processing unit 45 moves from step SP21 to step SP22 in response to a request from any of the network terminal devices 3A to 3E, and further from a request from an information processing device connected to the network 4, and the equipment related to this request A normal authentication process is executed by sending and receiving an identification code and the like. If the authentication cannot be performed correctly, the central processing unit 45 moves from step SP22 to step SP23, notifies the device of a predetermined warning message, moves to step SP24, and ends this processing procedure.
[0044]
On the other hand, if the normal authentication process can correctly authenticate, the central processing unit 45 moves from step SP22 to step SP25, acquires the position information of the current position from the in-vehicle device related to this request, and acquires the acquired current The communication permitted area database 48 is searched based on the position information of the position, and thereby it is determined whether or not the vehicle 5 equipped with the in-vehicle device 6 is located in the communication permitted area in the area where communication is permitted. To do. At this time, the central processing unit 45 searches the communication permitted area database 48 by the address of the network terminal device used for this request, and the current position of the in-vehicle device 6 detected on the network 4 is It is determined whether or not the communication permitted area, and whether or not the current position based on the position information acquired from the in-vehicle device 6 is correct. As a result, the central processing unit 45 does not accept access by other devices connected to the network 4, and further prevents data from being transmitted in response to access from the in-vehicle device 6 that pretends the current position. That's how much security is ensured.
[0045]
Thus, if it is determined by this determination that the current position is not an area where communication is permitted, the central processing unit 45 proceeds from step SP25 to step SP23, notifies the warning, and then proceeds to step SP24. On the other hand, when it can authenticate correctly, it moves to step SP26 and judges whether it was able to authenticate correctly by schedule authentication.
[0046]
Here, the schedule authentication is a process of determining whether or not the request is made by a correct user based on the schedule related to the vehicle 5 on which the in-vehicle device 6 related to this request is mounted. The central processing unit 45 searches the schedule database 46 based on the device related to this request and the current time, determines whether or not this request is from a point predicted by the schedule, and executes this processing. Specifically, in the schedule of the user who uses the vehicle 5, when the user arrives at the Atsugi Factory at 3:00 pm, for example, at 3:10 pm, the network terminal device 3A provided at the Atsugi Factory is In this case, when a request is obtained from the in-vehicle device 6 of the vehicle 5, the arrival time is delayed due to traffic congestion or the like, but the point is predicted by the schedule because it is a request from a point corresponding to the schedule. Judged as a request from. On the other hand, when the time of such a request is significantly different from the time of the schedule, there is a request in the schedule via the network terminal device 3A provided in the Atsugi factory. If there is a request via the network terminal device 3E, it is determined that the request is not from a point predicted by the schedule.
[0047]
As a result, the central processing unit 45 executes the authentication processing as to whether or not the access is made by the correct user based on the schedule as described above. If the authentication is not correctly performed here, the process proceeds from step SP26 to step SP23 to notify the warning. Then, the process proceeds to step SP24. On the other hand, if the authentication is correctly performed, the process proceeds to step SP27, and after the file list information and the like held in the file database 47 is transmitted to and received from the in-vehicle device 6, the corresponding file is in accordance with the instruction from the in-vehicle device 6. Is sent to the in-vehicle device 6. Next, the process proceeds to step SP28, where it is determined whether or not the request from the in-vehicle device 6 has been completed. If a negative result is obtained here, the process returns to step SP27 to download the subsequent file to the in-vehicle device 6. If a negative result is obtained in step SP28, the process proceeds to step SP24, and this processing procedure ends.
[0048]
(2) Operation of the embodiment
In the above-described configuration, in the data communication system 1 (FIGS. 2 and 3), the schedule of the user who uses the vehicle 5, the e-mail provided to the user, etc. are stored in the schedule database 46 and the file database 47 of the management server 2. (FIG. 5). Further, the region and range where the connection is permitted are recorded in the in-vehicle device 6 and the management server 2 by the prior selection from the region connectable to the management server 2 via the network 4 (FIG. 4).
[0049]
In this data communication system 1, the vehicle 5 is operated in this way, and the current position detected by the GPS system in the in-vehicle device 6 of the vehicle 5 is a region, range that is permitted to be connected in advance. (FIG. 1), a request is transmitted from the in-vehicle device 6, this request is received by the network terminal devices 3A to 3E responsible for this area and range, and is notified to the management server 2 by the network terminal devices 3A to 3E. The As a result, in this data communication system 1, it is possible to download desired data from the management server 2 in a sufficiently secure area and range without operating the in-vehicle device 6 at all. Compared to this, security can be improved and data communication can be easily performed.
[0050]
In the data communication system 1, when a request is obtained in this way, normal authentication processing between the management server 2 and the network terminal devices 3A to 3E is executed. After that, in this data communication system 1, based on the current position information acquired from the in-vehicle device 6 by the GPS system, on the management server 2 side, whether the current position of the in-vehicle device 6 is from the area or range in which communication is permitted. It is judged whether or not. Further, it is determined from the addresses of the network terminal apparatuses 3A to 3E that relayed the request whether or not the current position related to the request is correct. Thereby, in this data communication system 1, for example, unauthorized access from other areas impersonating the in-vehicle device 6 can be prevented, and sufficient security can be ensured as compared with the conventional case.
[0051]
Further, subsequently, based on the schedule of the user who uses the vehicle 5, it is determined whether or not the access from the in-vehicle device 6 is an access by a legitimate user. Also in this manner, the data communication system 1 can prevent unauthorized access by a third party due to impersonation, and can secure sufficient security as compared with the conventional case.
[0052]
Thus, in the data communication system 1, a new e-mail or the like is downloaded from the management server 2 to the in-vehicle device 6 in the case of an access from a regular region by a regular user by these processes. During the movement according to 5, such data can be considered and time can be used effectively.
[0053]
(3) Effects of the embodiment
According to the above configuration, data can be transmitted / received only in a region where a connection selected in advance from a plurality of connectable regions that can be connected by wireless communication is permitted. Thus, security can be improved and data communication can be easily performed.
[0054]
That is, in the in-vehicle device 6, when the current position detected by the current position detection means by the GPS system is an area where a connection selected in advance from a plurality of connectable areas connectable to the host apparatus is permitted, The desired data can be automatically downloaded only in an area where sufficient security is ensured by connecting to and acquiring desired data. In the case of automatic downloading in this way, it is not necessary to access the management server 2 frequently and frequently, so that power consumption can be reduced. In addition, a range in which this communication is permitted can be set to be a range in which data communication can be performed at high speed, and a large-capacity file can be acquired in a short time.
[0055]
In addition, by notifying the host device of the information on the current position and acquiring data based on the determination by the host device, it is possible to prevent unauthorized access that misrepresents the current position.
[0056]
On the other hand, in the management server 2 that is a host device, the current position of the movable device is detected based on the connection of the in-vehicle device 6 that is a movable device to the network, and the current position is moved. In a region where a connection pre-selected from a plurality of connectable regions to which a possible device can be connected is permitted, a sufficiently secure region can be secured by sending the data held in this movable device Only desired data can be provided.
[0057]
Also, information on the current position detected by the movable device is acquired, and data is determined by determining whether or not the current position based on the acquired current position information is an area in which the previously selected connection is permitted. By canceling the transmission of, unauthorized access by a third party can be prevented.
[0058]
Further, by determining the time of connection from the movable device based on the schedule regarding the movable device and authenticating according to the schedule, it is possible to prevent unauthorized access by a third party.
[0059]
(4) Other embodiments
In the above-described embodiment, the case where an in-vehicle device is applied as a movable data communication device has been described. However, the present invention is not limited to this, and various information terminals such as a mobile phone and a PDA (Personal Digital Assistant) are used. Can be widely applied to the device.
[0060]
Further, in the above-described embodiment, the case where the GPS system is applied as the current position acquisition unit has been described. However, the present invention is not limited to this, for example, when the current position information is acquired by a cell in a mobile phone communication network, etc. It can also be widely applied to.
[0061]
In the above-described embodiment, the case where the management server stores and holds the data to be provided to the in-vehicle device, and the management server provides the stored data to the in-vehicle device has been described. Not limited to this, such data may be held on the network terminal device side, and the data held by the management in the network terminal device may be provided to the in-vehicle device.
[0062]
Moreover, in the above-described embodiment, the case where the range where the connection is permitted is set for each area where the connection is permitted has been described. However, the present invention is not limited to this, and such a range is set. It may be omitted.
[0063]
In the above-described embodiment, the case where data is downloaded to the in-vehicle device has been described. However, the present invention is not limited to this, and data may be uploaded from the in-vehicle device.
[0064]
【The invention's effect】
As described above, according to the present invention, by transmitting and receiving data only in the case where the current position is an area where a connection selected in advance from a plurality of connectable areas connectable by wireless communication is permitted, The data can be easily communicated with improved security as compared with the prior art.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a processing procedure of a central processing unit of an in-vehicle device in a data communication system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a data communication system according to the embodiment of the present invention.
3 is a block diagram showing a network terminal device and an in-vehicle device in the data communication system of FIG. 2. FIG.
4 is a chart for explaining a region where communication is permitted in the in-vehicle device of FIG. 3; FIG.
FIG. 5 is a block diagram showing a management server in the data communication system of FIG. 2;
6 is a chart for explaining a file database in the management server of FIG. 5;
7 is a flowchart showing a processing procedure of a central processing unit in the management server of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Data communication system, 2 ... Management server, 3A-3E ... Network terminal, 4 ... Network, 5 ... Vehicle, 6 ... In-vehicle device, 14, 24, 45 ... Central processing unit

Claims (3)

In a data communication device for sending desired data to the movable device by connection by wireless communication from the movable device,
Detecting a current position of the movable device based on the connection of the movable device;
The current position is, if the area where the movable device is selected in advance from a plurality of connectable local connectable connections are allowed,
Further, based on the schedule relating to the movable device, the time of connection from the movable device is determined,
Based on the determination result, the data is transmitted to the movable device.
Data communication equipment. In a data communication system for transmitting data from a host device to the movable device by connection by wireless communication from the movable device,
The movable device is:
Based on the current position detected by the current position detection means, if the current position is an area where a connection selected in advance from a plurality of connectable areas connectable to the host apparatus is permitted, the host apparatus Request transmission of the data,
The host device is
Due to the request from the mobile device,
Detecting the current position of the movable device based on the connection of the movable device;
If the current location is an area where the pre-selected connection is allowed,
Further, based on the schedule relating to the movable device, the time of connection from the movable device is determined,
Based on the determination result, the data is transmitted to the movable device.
Data communication system. In a control method of a data communication device for sending desired data to the movable device by connection by wireless communication from the movable device,
Detecting the current position of the movable device based on the connection of the movable device;
In the case where the current position is an area where a connection selected in advance from a plurality of connectable areas to which the movable device can be connected is permitted,
Further, based on the schedule relating to the movable device, the time of connection from the movable device is determined,
A method for controlling a data communication apparatus, which transmits the data to the movable apparatus based on the determination result .

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