JP2005341310A - Communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication system capable of efficiently acquiring desired data. <P>SOLUTION: The communication device 10 is provided with a divided data acquisition portion 14c for acquiring divided data formed by performing dividing processing of desired data (map data 200 etc., for example) by a plurality of communication media (a portable telephone 20 and a LAN card 30), and a data restoration portion 14d for performing uniting processing of divided data acquired with the plurality of communication media by the acquisition portion 14c and restoring the desired data. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication apparatus having a plurality of communication media for acquiring desired data, and more particularly to a communication apparatus capable of efficiently acquiring desired data by utilizing the usefulness of having a plurality of communication media. .

  2. Description of the Related Art Conventionally, cellular phones, PHS, PCs (personal computers) with built-in modems, and PDAs are widely used as communication media that can be connected to a network line such as the Internet. These communication media have advantages or disadvantages according to the communication characteristics of the respective communication connection forms (that is, connection forms with communication media and communication networks corresponding to the communication media).

  For example, mobile communication networks such as mobile phones and PHS can secure a wide range of communication connections, but are not suitable for large-capacity data communication because the frequency bandwidth of communication is limited. is there. On the other hand, in a network communication network using a wireless LAN, communication processing can be performed at a higher communication speed than that of a communication connection mode such as a mobile phone or a PHS, and large-capacity data communication can be performed. However, the area where communication connection is possible is limited to the area around the hotspot.

  Therefore, in order to effectively use the advantages of the communication characteristics for each communication connection mode, information communication is performed by selecting a desired communication medium from a plurality of communication media and executing communication processing using the selected communication medium. A terminal device has been developed (see, for example, Patent Document 1).

  That is, the information communication terminal device accepts selection of a communication medium desired by a user from a plurality of communication media (for example, a LAN card, a mobile phone, a PHS, etc.), and the received communication media uses an HTTP server or the like. Various contents (for example, information such as voice, moving image, image, text) are downloaded from the server apparatus.

  According to such an information communication terminal device, since the user selects a desired communication medium from among a plurality of communication media, the user selects each communication medium and executes communication processing when the communication processing is executed. Communication media can be selected in consideration of profits and losses (for example, communication charges, communication time, communication safety, communication reliability, etc.).

  In recent years, electronic devices mounted on vehicles have been diversified, various processing functions performed in conjunction with personal computers and communication media have been added to the vehicle, and the information communication terminal device described above is also mounted on the vehicle. Has reached.

JP 2002-232506 A

  However, the above-described prior art (Patent Document 1) is merely a function of a single communication medium that accepts a selection from a user, and is useful for having a plurality of communication media. Therefore, there is a problem that desired data cannot be obtained efficiently.

  In particular, when the information communication terminal device described above is mounted on a mobile body such as a vehicle, there are many cases in which the communication connection is disconnected due to changes in the communication environment. Need to get.

  Therefore, the present invention has been made to solve the above-described problems (problems) caused by the prior art, and an object of the present invention is to provide a communication apparatus that can efficiently acquire desired data.

  In order to solve the above-described problems and achieve the object, a communication apparatus according to the invention of claim 1 is a communication apparatus having a plurality of communication media for obtaining desired data. Divided data acquisition means for acquiring the divided data subjected to the division processing using a plurality of communication media, and combining data for the divided data acquired by the plurality of communication media by the divided data acquisition means to obtain desired data And a data restoring means for restoring the data.

  In the communication device according to a second aspect of the present invention, in the above invention, the divided data acquisition unit performs a division process in which the desired data is divided according to a communication speed ratio of each communication medium. Data is acquired by each communication medium to which the divided data is distributed according to the ratio.

  According to a third aspect of the present invention, in the communication device according to the third aspect, the divided data acquisition means may convert the divided data blocks subjected to the division processing to block the desired data to the communication speed of each communication medium. According to this ratio, the data is acquired by each communication medium to which the block of divided data is distributed.

  According to a fourth aspect of the present invention, in the communication apparatus according to the fourth aspect, the divided data acquisition unit may convert the divided data obtained by dividing the desired data for each data type into the data type. The divided data is acquired by each communication medium to which the divided data is distributed.

  The communication apparatus according to the invention of claim 5 further comprises transmission control information notifying means for notifying transmission control information including a division command for the desired data and a distribution command for the divided data in the above invention, The divided data acquisition means acquires the divided data obtained by performing the dividing process on the desired data based on the dividing instruction on each communication medium to which the divided data is distributed according to the distributing instruction. Features.

  According to a sixth aspect of the present invention, there is provided the communication device according to the sixth aspect, wherein in the above-mentioned invention, the divided data acquisition for determining whether or not to perform the divided data acquisition process by the divided data acquisition unit based on the desired data capacity. The division data acquisition unit further includes a determination unit that determines whether the division data acquisition process is performed by the division data acquisition unit. Is acquired by a plurality of communication media.

  Further, in the communication device according to the invention of claim 7, in the above invention, the divided data acquisition availability determination unit is configured to acquire the divided data by the divided data acquisition unit based on the number of communication media satisfying a communication speed threshold. It is characterized by determining whether to perform processing.

  In the communication device according to an eighth aspect of the present invention, in the above invention, the divided data acquisition availability determination means is configured to determine the divided data based on the number of communication media that can acquire desired data with a communication charge less than a threshold. It is characterized by determining whether to perform the divided data acquisition process by the data acquisition means.

  A communication apparatus according to a ninth aspect of the present invention is a communication apparatus having a plurality of communication media for obtaining desired data, wherein a plurality of keyed data obtained by encrypting the desired data and a plurality of the key information. Data acquisition means for acquiring the data with the communication medium, and data recovery means for recovering the desired data by decrypting the keyed data acquired by the data acquisition means with the key information. .

  In the communication device according to the invention of claim 10, in the above invention, the data acquisition unit distributes the keyed data in which the desired data is encrypted and the key information according to the importance of the data. It is obtained by each communication medium.

  In the communication apparatus according to an eleventh aspect of the present invention, in the above invention, the data acquisition means duplicates the keyed data obtained by encrypting the desired data and the key information in accordance with the importance of the data. It is obtained by each communication medium distributed.

  According to the present invention, divided data obtained by performing division processing on desired data is acquired by a plurality of communication media, and the combined data is acquired on the divided data acquired by a plurality of communication media to obtain desired data. Therefore, it is possible to maximize the usefulness of having a plurality of communication media, and to obtain a communication device capable of efficiently acquiring desired data. In addition, since data is acquired using multiple communication media, it is possible to continue acquiring data even if a specific communication media is disconnected from the network. Become.

  Further, according to the present invention, the divided data subjected to the division process for dividing the desired data according to the communication speed ratio of each communication medium is transferred to each communication medium to which the divided data is distributed according to this ratio. Since the acquisition is performed, the communication completion time of each communication medium can be made at the same time, and there is an effect that a communication apparatus capable of acquiring desired data more efficiently can be obtained.

  Further, according to the present invention, the divided data block subjected to the dividing process for blocking desired data is divided into the communication media to which the divided data blocks are distributed according to the communication speed ratio of the respective communication media. Since the acquisition is performed, the communication completion time of each communication medium can be made at the same time, and there is an effect that a communication apparatus capable of acquiring desired data more efficiently can be obtained. In addition, in connection with this, by communicating with the divided data blocks, it is possible to obtain the divided data distributed according to the change of the communication environment of each communication medium, and communicate with each communication medium Even when there is a change in the environment, the communication completion time of each communication medium can be made simultaneously.

  In addition, according to the present invention, the divided data subjected to the dividing process for dividing the desired data for each data type is acquired by each communication medium to which the divided data is distributed according to the data type. Therefore, it is possible to obtain a communication device capable of obtaining data in a short time and obtaining desired data efficiently as compared to obtaining data with a single communication medium. Play.

  Further, according to the present invention, transmission control information including a division instruction for desired data and a distribution instruction for divided data is notified, and divided data for which division processing based on the division instruction has been performed on the desired data is allocated. Since the division data is acquired by each communication medium according to the distribution instruction, the communication device capable of performing the division processing and the distribution processing control on the information source can be obtained. Play.

  Further, according to the present invention, based on the desired data capacity, it is determined whether or not the divided data acquisition process is to be performed, and when it is determined that the divided data acquisition process is to be performed, Since the divided data that has undergone the division processing is acquired using multiple communication media, it is possible to prevent inefficient communication processing results that occur when division processing and combination processing are performed on data with a small amount of information. An effect is obtained that a simple communication device can be obtained.

  Further, according to the present invention, since it is determined whether or not to perform the divided data acquisition process based on the number of communication media satisfying the communication speed threshold, data is transmitted using communication media having a low effective communication speed. As a result, it is possible to obtain a communication device that can avoid a situation in which the communication efficiency is inferior to the case where data is acquired using a single communication medium.

  In addition, according to the present invention, since it is determined whether or not to perform the divided data acquisition process based on the number of communication media whose communication fee is less than the threshold and from which desired data can be acquired, the communication fee is high. By obtaining data using a communication medium, there is an effect that a communication apparatus capable of avoiding a situation in which the communication fee is more expensive than when data is obtained using a single communication medium is obtained. .

  Further, according to the present invention, keyed data in which desired data is encrypted and the key information is obtained by a plurality of communication media, and the obtained keyed data is decrypted with the key information. Communication device that can acquire data in a short time compared to performing data acquisition with a single communication medium, and can efficiently acquire desired data The effect that is obtained.

  In addition, according to the present invention, since keyed data in which desired data is encrypted and the key information are acquired by each communication medium distributed according to the importance of the data, important data can be secured. It is possible to obtain a communication device that can be acquired with a high communication medium and can prevent information leakage.

  In addition, according to the present invention, the keyed data in which the desired data is encrypted and the key information are acquired by each communication medium that is distributed according to the importance of the data. There is an effect that a communication device capable of reducing failure in data acquisition due to the change of the above can be obtained.

  Exemplary embodiments of a communication device according to the present invention mounted on a vehicle will be described below in detail with reference to the accompanying drawings. In the following, after describing the outline and features of the communication device according to the present invention, the communication device according to the first embodiment will be described. Finally, various modifications (second embodiment) will be described as other embodiments. I will explain.

(Overview and features)
First, the outline and features of the communication apparatus according to the present invention will be described. FIG. 1 is a block diagram showing the configuration of a communication apparatus according to the present invention. As shown in FIG. 1, this communication apparatus 10 is a communication medium (for example, a mobile phone 20 and a LAN) for obtaining desired data. A plurality of cards 30) are connected to the WEB server via the base station 3 and the cellular phone network 1, the hot spot 4 and the wireless LAN network 2.

  Here, the communication apparatus 10 according to the present invention acquires the divided data obtained by dividing the desired data using a plurality of communication media, and combines the divided data acquired using the plurality of communication media. The main feature is that the desired data is restored by performing the above-described process, and the desired data can be efficiently acquired by such a series of processes.

  This main feature will be described in detail. Generally, even when a plurality of communication media are installed, data is acquired with a single communication medium that is selected from the user. 10, in order to make use of the usefulness of a plurality of installed communication media, the division data obtained by dividing the desired data is acquired by the plurality of communication media, and the combination processing is performed on the divided data. Restore the original data.

  For this reason, it is possible to acquire data in a shorter time than to acquire desired data with a single communication medium. Furthermore, by performing data acquisition in a short time, it is possible to prevent a situation where the communication connection is disconnected due to a change in the communication environment.

  Therefore, in the above-described prior art example, instead of acquiring data with a single communication medium that has received a selection from the user, a plurality of pieces of divided data obtained by dividing the desired data are obtained. Since the desired data is restored by performing a combination process on the divided data, it is possible to make the most of the usefulness of having a plurality of communication media. Like the feature, it becomes possible to efficiently acquire desired data. In addition, since data is acquired using multiple communication media, it is possible to continue acquiring data even if a specific communication media is disconnected from the network. Become.

  Next, the communication apparatus according to the first embodiment will be described. In the first embodiment, the divided data subjected to the division process for dividing the desired data according to the communication speed ratio of each communication medium is acquired by each communication medium to which the divided data is distributed according to this ratio. A communication device that performs a combining process on the acquired divided data to restore desired data will be described. Here, after describing the configuration of the communication apparatus according to the first embodiment, procedures of various processes will be described.

(Configuration of communication device)
FIG. 1 is a block diagram illustrating the configuration of the communication apparatus according to the first embodiment. As shown in FIG. 1, the communication device 10 includes a mobile phone 20, a LAN card 30, an input unit 11, an output unit 12, a storage unit 13, and a control unit 14.

  Among these, the input unit 11 is an interface that accepts an input operation from a user, and for example, accepts a communication processing request, accepts a division command and a distribution command. The display unit 12 is a display device such as a liquid crystal panel or a display. For example, when acquiring data such as download, the display unit 12 displays and confirms a communication fee and a communication time.

  The storage unit 13 is a storage unit (storage unit) that stores data and programs necessary for various processes performed by the control unit 14, and includes a content storage unit 13a and a communication speed storage unit 13b. Among these, the content storage unit 13a is a storage unit (storage unit) that stores various contents (for example, information such as sound, moving images, images, and texts), and the communication speed storage unit 13b is provided for each communication medium. The communication speed (for example, mobile phone “10 Mbps”, wireless LAN “20 Mbps”) is stored (storage means).

  The control unit 14 is a processing unit that has a control program such as an OS (Operating System), a program that defines various processing procedures, and an internal memory for storing necessary data, and executes various processes using these. Particularly, what is closely related to the present invention includes a divided data acquisition availability determination unit 14a, a transmission control information notification unit 14b, a divided data acquisition unit 14c, and a data restoration unit 14d.

  Among these, the divided data acquisition possibility determination unit 14a is a processing unit that determines whether or not the divided data acquisition processing by the divided data acquisition unit 12c is performed based on the capacity of desired data. For example, the input unit 11 When the map data 200 download request to the WEB server 100 is received via the web server 100, if the map data 200 is equal to or greater than a predetermined threshold value, it is determined that the divided data acquisition process is to be performed. If it is less, it is determined that the divided data acquisition process is not performed.

  In this way, inefficient communication that occurs when split processing and combining processing are performed on data with a small amount of information by determining whether or not to perform split data acquisition processing based on the capacity of the desired data The processing result can be prevented.

  The transmission control information notification unit 14b is a processing unit that notifies transmission control information including a division command for desired data and a distribution command for divided data. Specifically, when the divided data acquisition possibility determination unit 14a determines that the divided data acquisition process is to be performed, the communication speed ratio of each communication medium (that is, mobile phone “1”: wireless LAN “2”) is set. Accordingly, the transmission control information including the “division command” for dividing the map data 200 and the “distribution command” for distributing the divided data according to the communication speed ratio of each communication medium is transmitted to the WEB server 100 together with the download request for the map data 200. Notice.

  The divided data acquisition unit 14c is a processing unit that acquires divided data obtained by performing division processing based on a division command on desired data using each communication medium to which the divided data is distributed according to the distribution command. Specifically, as shown in FIG. 2, a division process for dividing the map data 200 according to the communication speed ratio of each communication medium (ie, mobile phone “1”: wireless LAN “2”) was performed. The divided data is acquired by each communication medium (that is, the mobile phone 20 and the LAN card 30) to which the divided data is distributed according to this ratio.

  That is, as shown in FIG. 2, the map data 200 is divided into one-third divided data of the entire map data 200 (that is, ID “200-1”) and map data by the division processing unit 130 a in the WEB server 100. The data is divided into two-thirds of divided data (that is, ID “200-2”). One-third of the divided data of the entire map data 200 is acquired by the mobile phone 20, and two-thirds of the divided data of the entire map data 200 is acquired by the LAN card 30.

  In this way, the transmission control information including the division command for the desired data and the distribution data distribution command is notified, and the division data for which the division processing based on the division command is performed on the desired data according to the distribution command Thus, the division processing and the distribution processing can be controlled with respect to the information source by acquiring the divided data with each communication medium to which the divided data is distributed.

  Further, the divided data obtained by dividing the desired data according to the communication speed ratio of each communication medium is acquired by each communication medium to which the divided data is distributed according to the ratio. Therefore, the communication completion time of each communication medium can be made simultaneously, and desired data can be acquired more efficiently.

  The data restoration unit 14d is a processing unit that restores desired data by performing a combining process on the divided data acquired by each communication medium by the divided data acquisition unit 14c. Specifically, based on the combination information acquired together with the divided data from the WEB server 100, the map data 200 is restored by performing a combination process on the divided data acquired by the mobile phone 20 and the LAN card 30.

  The WEB server 100 is a server device that provides various contents (for example, information such as voice, moving image, image, and text). Between the WEB server 100 and the mobile phone network 1 or the wireless LAN network 2. A communication control IF unit 110 that controls communication of various types of information, a content DB 120 that stores various types of content (for example, map data 200), and a control unit 130 are provided.

  The control unit 130 is a processing unit that performs overall control such as exchange of various data, and includes a division processing unit 130a and a distribution processing unit 130b as functions corresponding to the communication device 10 according to the present invention. Among these, the division processing unit 130a is a processing unit that performs division processing on desired data based on the division command notified by the transmission control information notification unit 14b. Specifically, the map data 200 is divided according to the communication speed ratio of each communication medium (that is, mobile phone “1”: wireless LAN “2”). Note that at the time of such division processing, combination information (for example, ID of the map data 200, address information of each divided data, etc.) necessary for the combination processing by the data restoration unit 14d is extracted.

  The distribution processing unit 130b is a processing unit that transmits the divided data to each communication medium according to the distribution command notified by the transmission control information notification unit 14b, and the communication speed ratio of each communication medium (that is, a mobile phone) “1”: The divided data is distributed according to the wireless LAN “2”).

  That is, as shown in FIG. 3, the mobile phone 20 receives the map data ID “200-1”, the combined information, and one-third divided data (actual data) of the map data 200 as a whole. The map data ID “200-1”, the combined information, and two-thirds divided data (actual data) of the entire map data 200 are transmitted.

(Procedures for various processing of communication devices)
Next, procedures of various processes of the communication device 10 according to the first embodiment will be described. FIG. 4 is a flowchart showing specific processing contents of the divided data acquisition unit and the data restoration unit. As shown in the figure, this processing is started when a request for communication processing is received from the user via the input unit 11. In the first embodiment, an example in which a download request for image data (for example, map data 200) to the WEB server 100 is received will be described.

  First, when a download request for image data (for example, map data 200) is received from the WEB server 100 (Yes in step S401), the divided data acquisition availability determination unit 14a performs division based on the capacity of the map data 200. It is determined whether or not the divided data acquisition process is performed by the data acquisition unit 12c (step S402).

  If the map data 200 is less than the predetermined threshold (No at Step S402), the divided data acquisition availability determination unit 14a determines that the divided data acquisition processing is not performed, and the communication device 10 is currently connected. A download request for the map data 200 is notified to the WEB server 100 by communication media (for example, the LAN card 30) (step S403).

  Further, the WEB server 100 receives a notification of a download request for the map data 200 (step S404), transmits the map data 200 to the LAN card 30 (step S405), and the communication device 10 transmits the map data 200 to the LAN card. 30 (step S406).

  On the other hand, if the map data 200 is greater than or equal to a predetermined threshold (Yes at step S402), the divided data acquisition availability determination unit 14a determines that the divided data acquisition process is to be performed, and the transmission control information notification unit 14b A “division command” that divides the map data 200 according to the communication speed ratio (ie, mobile phone “1”: wireless LAN “2”), and “assignment” that distributes the divided data according to the communication speed ratio of each communication medium. The transmission control information including “minute command” is notified to the WEB server 100 together with the download request for the map data 200 (step S407).

  Then, the WEB server 100 accepts the notification of the download request for the map data 200 (step S408), and the division processing unit 130a divides the map data 200 based on the division command notified by the transmission control information notification unit 14b. Processing is performed (step S409). Specifically, the map data 200 is divided according to the communication speed ratio of each communication medium (that is, mobile phone “1”: wireless LAN “2”). Note that at the time of such division processing, combination information (for example, ID of the map data 200, address information of each divided data, etc.) necessary for the combination processing by the data restoration unit 14d is extracted.

  Subsequently, the distribution processing unit 130b transmits the divided data to each communication medium according to the distribution command notified by the transmission control information notification unit 14b (step S410). Specifically, as shown in FIG. 3, the mobile phone 20 receives map data ID “200-1”, combined information, and one-third divided data (actual data) of the map data 200 as a whole. The LAN card 30 transmits the map data ID “200-1”, the combined information, and two-thirds divided data (actual data) of the entire map data 200.

  Then, the divided data acquisition unit 14c acquires the divided data obtained by performing the division processing based on the division command on the desired data by each communication medium to which the divided data is distributed according to the distribution command (Step S411). ). That is, one third of the divided data of the entire map data 200 is acquired by the mobile phone 20, and two third of the divided data of the entire map data 200 is acquired by the LAN card 30 (see FIG. 2). .

  Finally, the data restoration unit 14d restores the map data 200 by performing a combination process on the divided data acquired by each communication medium by the divided data acquisition unit 14c (step S412). Specifically, based on the combination information acquired together with the divided data from the WEB server 100, the map data 200 is restored by performing a combination process on the divided data acquired by the mobile phone 20 and the LAN card 30.

  As described above, according to the communication apparatus 10 according to the first embodiment, the divided data obtained by dividing the desired data is acquired by the plurality of communication media, and the combined processing is performed on the divided data. Since the desired data is restored by performing the above, the usefulness of having a plurality of communication media can be utilized to the maximum, and the desired data can be acquired efficiently.

  Furthermore, according to the communication apparatus 10 according to the first embodiment, since data is acquired using a plurality of communication media, data acquisition is continued even when a specific communication medium is disconnected from the network. It becomes possible to do it.

  Although the first embodiment of the present invention has been described so far, the present invention can be implemented in various different embodiments within the scope of the technical idea described in the claims other than the above-described embodiments. It may be.

  For example, in the present invention, a block of divided data that has been divided into desired data is acquired by each communication medium to which the block of divided data is distributed in accordance with the communication speed ratio of each communication medium. You may do it.

  That is, as shown in FIG. 5, since the ratio of the communication speed is cellular phone “1”: LAN card “2”, the divided data acquisition unit 14 c uses the divided data blocks “2”, “5”, “8”. ”Is acquired by the mobile phone 20, and the divided data blocks“ 1 ”,“ 3 ”,“ 4 ”,“ 6 ”,“ 7 ”,“ 9 ”are acquired by the LAN card 30.

  In this way, by obtaining a block of divided data that has been divided into blocks of desired data with each communication medium to which the block of divided data is distributed according to the communication speed ratio of each communication medium. The communication completion time of each communication medium can be made simultaneously, and desired data can be acquired more efficiently. In addition, in connection with this, by communicating with the divided data blocks, it is possible to obtain the divided data distributed according to the change of the communication environment of each communication medium, and communicate with each communication medium Even when there is a change in the environment, the communication completion time of each communication medium can be made simultaneously.

  In addition, the method of distributing the divided data divided into blocks is not limited to the example shown in FIG. 5. For example, as shown in FIG. 8, as shown in FIG. Anyway. In this example, the divided data blocks are preferentially allocated from the current location at the center of the map data 200, and the divided data blocks “2”, “5”, “8”, “11”,. Then, the divided data blocks “1”, “3”, “4”, “6”, “7”, “9”, “10”, “12”,... Are acquired by the LAN card 30.

  Further, in the present invention, the divided data that has been subjected to the dividing process for dividing the desired data for each data type may be acquired by each communication medium to which the divided data is distributed according to the data type. . At this time, it is necessary to preset the type of data to be distributed for each communication medium, such as the mobile phone 20 and text data, and the LAN card 30 and moving image.

  That is, as shown in FIG. 6, by acquiring text data with a small amount of information with a mobile phone 20 and acquiring a moving image with a large amount of information with a LAN card, data can be acquired with a single communication medium. Data can be acquired in a short time compared to the case of performing it, and desired data can be acquired efficiently.

  In the first embodiment, the divided data acquisition availability determination in the case where it is determined whether to perform the divided data acquisition processing based on the desired data capacity has been described. However, the present invention is limited to this. Instead, it may be determined whether or not the divided data can be acquired based on the number of communication media satisfying the communication speed threshold. In other words, it is possible to avoid a situation in which the communication efficiency is inferior to the case where data is acquired using a single communication medium by acquiring data using a communication medium having a low effective communication speed. It becomes possible.

  Further, based on the number of communication media whose communication fee is less than the threshold and from which desired data can be acquired, it may be determined whether or not to perform the divided data acquisition processing. In other words, by acquiring data using communication media with a high communication fee, it is possible to avoid a situation in which the communication fee is more expensive than when acquiring data with a single communication medium. Become.

  Further, in the first embodiment, the embodiment in the case of acquiring information that is inherently integral has been described. However, the present invention is not limited to this, and an effect is obtained by collecting a plurality of data. The same applies to the acquisition of things. For example, the keyed data in which the desired data is encrypted and the key information are acquired with a plurality of communication media, and the desired data is restored by decrypting the acquired keyed data with the key information. Also good. In other words, this makes it possible to acquire data in a shorter time than to acquire data with a single communication medium, and to acquire desired data efficiently.

  Alternatively, keyed data in which desired data is encrypted and the key information may be acquired by each communication medium distributed according to the importance of the data. At this time, it is necessary to preset the importance (for example, high) for each communication medium (for example, the mobile phone 20).

  For example, as shown in FIG. 7A, key information with high importance is acquired by the mobile phone 20, and map data with key lower in importance than key information is acquired with a LAN card. Data can be acquired using a highly secure communication medium, and information leakage can be prevented.

  Further, the keyed data in which desired data is encrypted and the key information may be acquired by each communication medium distributed in accordance with the importance of the data. That is, as shown in FIG. 7-2, the key information with high importance is obtained redundantly by the mobile phone 20 and the LAN card 30, thereby reducing the failure in obtaining the data due to the change in the communication environment. Is possible.

  Further, in the first embodiment, an example in which a mobile phone and a wireless LAN are used as communication media has been described. However, the present invention is not limited to this, and road-to-vehicle (ie, DSRC), The same applies to a satellite. Further, the same type of communication media may be different in model.

  In addition, among the processes described in this embodiment, all or part of the processes described as being performed automatically can be performed manually, or the processes described as being performed manually can be performed. All or a part can be automatically performed by a known method. In addition, the processing procedure, control procedure, specific name, and information including various data and parameters shown in the above-mentioned document and drawings can be arbitrarily changed unless otherwise specified.

  Further, each component of each illustrated apparatus is functionally conceptual, and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution / integration of each device is not limited to that shown in the figure, and all or a part thereof may be functionally or physically distributed or arbitrarily distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured. Further, all or any part of each processing function performed in each device may be realized by a CPU and a program analyzed and executed by the CPU, or may be realized as hardware by wired logic.

  As described above, the communication apparatus according to the present invention is useful for a communication apparatus having a plurality of communication media for acquiring desired data, and particularly suitable for a communication apparatus that can efficiently acquire desired data. ing.

1 is a block diagram illustrating a configuration of a communication device according to a first embodiment. It is a figure which shows the flow of the information of division | segmentation data. It is a figure for demonstrating the information transmitted from a distribution process part. It is a flowchart which shows the specific processing content of a division | segmentation data acquisition part and a data decompression | restoration part. It is a figure which shows the flow of the information of division | segmentation data. It is a figure which shows the flow of the information of division | segmentation data. It is a figure which shows the flow of the information of division | segmentation data. It is a figure which shows the flow of the information of division | segmentation data. It is a figure which shows an example of a distribution command.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile phone network 2 Wireless LAN network 3 Base station 4 Hot spot 10 Communication apparatus 11 Input part 12 Output part 13 Storage part 13a Content storage part 13b Communication speed storage part 14 Control part 14a Division | segmentation data acquisition availability determination part 14b Transmission control information notification Unit 14c divided data acquisition unit 14d data restoration unit 20 mobile phone 30 LNA card 100 WEB server 110 communication control IF unit 120 content DB
130 Control Unit 130a Division Processing Unit 130b Distribution Processing Unit

Claims (11)

A communication device having a plurality of communication media for obtaining desired data,
Divided data acquisition means for acquiring divided data obtained by dividing the desired data using a plurality of communication media;
Data restoration means for performing a combining process on the divided data acquired by a plurality of communication media by the divided data acquisition means to restore desired data;
A communication apparatus comprising:   The divided data acquisition unit is configured to distribute divided data that has been subjected to a division process for dividing the desired data according to a communication speed ratio of each communication medium, to each communication medium to which the divided data is distributed according to the ratio. The communication device according to claim 1, wherein the communication device is acquired.   The divided data acquisition means is configured such that the divided data blocks subjected to the division processing for blocking the desired data are assigned to the communication media in which the divided data blocks are distributed according to the communication speed ratio of the communication media. The communication device according to claim 1, wherein the communication device is acquired.   The divided data acquisition means acquires the divided data on which the division processing for dividing the desired data for each data type is performed on each communication medium to which the divided data is distributed according to the data type. The communication device according to claim 1, 2, or 3. A transmission control information notification means for notifying transmission control information including a division command for the desired data and a distribution command for the divided data;
The divided data acquisition means acquires the divided data obtained by performing the dividing process on the desired data based on the dividing instruction on each communication medium to which the divided data is distributed according to the distributing instruction. The communication apparatus according to claim 1, wherein the communication apparatus is characterized. Based on the desired data capacity, further comprising: a divided data acquisition availability determination unit that determines whether to perform a divided data acquisition process by the divided data acquisition unit;
The divided data acquisition unit acquires, using a plurality of communication media, divided data obtained by performing division processing on the desired data when the divided data acquisition availability determination unit determines to perform divided data acquisition processing. The communication apparatus according to claim 1, wherein the communication apparatus includes:   The divided data acquisition availability determination unit determines whether or not to perform the divided data acquisition process by the divided data acquisition unit based on the number of communication media satisfying a communication speed threshold. The communication device described.   The divided data acquisition availability determination means determines whether or not to perform divided data acquisition processing by the divided data acquisition means based on the number of communication media whose communication fee is less than a threshold and from which desired data can be acquired. The communication device according to claim 6 or 7, characterized in that A communication device having a plurality of communication media for obtaining desired data,
Data acquisition means for acquiring the keyed data obtained by encrypting the desired data and the key information using a plurality of communication media;
Data restoring means for restoring desired data by decrypting keyed data acquired by the data acquiring means with key information;
A communication apparatus comprising:   10. The data acquisition unit according to claim 9, wherein the data acquisition unit acquires the keyed data obtained by encrypting the desired data and the key information using each communication medium distributed according to the importance of the data. Communication device.   10. The data acquisition means acquires the keyed data obtained by encrypting the desired data and the key information with each communication medium distributed in accordance with the importance of the data. Or the communication apparatus of 10.

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