JP2009260579A - Mobile communication terminal, information transmission setting system, and information transmission setting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and easily enable setting of an ID and a password for connecting to a WLAN system or the like from an outing destination while securing safety in terms of security. <P>SOLUTION: A control device 21 of a broadcast system embeds an ESSID and a password for accessing a WLAN within an EMM packet specified by a reception terminal for encryption, and makes a broadcast device 22 broadcast a digital broadcast signal including the EMM packet. A mobile telephone terminal 1 extracts and decrypts the EMM packet specifying its own terminal from the digital broadcast signal by using secret key information for watching a digital broadcast registered in an IC card module, and obtains the ESSID and the password within the EMM packet. The mobile telephone terminal 1 sets the ESSID and the password in the WLAN module to access a WLAN access point 33. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mobile communication terminal such as a mobile phone terminal having a communication function and a digital broadcast receiving function, and an information transmission setting system and information transmission setting method for transmitting predetermined key information and the like to the mobile communication terminal. About.

  Conventionally, for example, in a mobile communication terminal such as a mobile phone terminal equipped with a communication function such as a wireless LAN (WLAN), when communication is performed via a public WLAN system, for example, in the place of going out, the following Such work is necessary. That is, for example, it is necessary to set an ID (ESSID: Extended Service Set ID) and a password for connecting to the access point of the WLAN system in the terminal. These ESSIDs and passwords are usually set by manual input by the user.

  Although different from the connection example to the WLAN system, for example, in the published patent publication (Patent Document 1) of Japanese Patent Laid-Open No. 2005-229152, a digital broadcast contract program is viewed by another digital broadcast receiving apparatus at a place where the user is away. An enabled digital broadcast receiving apparatus is disclosed. That is, in this publication, a subscriber of a digital broadcast viewing request a contract information and a work key to a server through a mobile phone, and broadcast the contract information and the work key sent from the server in response to the request from the mobile phone. Transfer to the receiving device is described. As a result, even if the viewing contractor does not have an IC card or the like for viewing digital broadcasts, the digital broadcast contracted program can be viewed by another digital broadcast receiving apparatus outside the office.

Japanese Patent Laying-Open No. 2005-229152 (FIG. 3)

  As described above, in a mobile communication terminal, in order to connect to another communication system (such as a public WLAN system) on the go using a communication function such as WLAN, for example, key information for connecting to the communication system It is necessary to perform a very troublesome setting operation such as inputting. The key information for connecting to the communication system is the aforementioned ESSID, password password, or the like.

  Note that there is a system called AOSS (AirStation One-Touch Secure System: registered trademark) as a system that can automatically set the ESSID and password of the WLAN. However, this system is intended for stationary communication terminals in the home, and does not support the use of connecting to a public WLAN or the like on the go with a mobile communication terminal such as a mobile phone terminal.

  The present invention has been proposed in view of such circumstances, and does not require manual input work by the user for key information for connecting to another communication system when away from home. It is an object of the present invention to provide a mobile communication terminal, an information transmission setting system, and an information transmission setting method that can be easily and easily set while ensuring the reliability.

  The mobile communication terminal of the present invention includes a broadcast receiving unit, a system processing unit, and a control unit. The broadcast receiving unit receives a broadcast signal, and the system processing unit performs processing for using a desired system. In addition, the control unit extracts predetermined information specifying the terminal from the broadcast signal received by the broadcast receiving unit, acquires key information embedded in the predetermined information, and uses the acquired key information to obtain a system processing unit. Makes settings to use the desired system. Thereby, the mobile communication terminal of the present invention solves the above-described problems.

  The information transmission setting system of the present invention includes a broadcast control device and a mobile communication terminal. The broadcast control device embeds key information for using a desired system in the predetermined information specified by the receiving terminal, and broadcasts a broadcast signal including the predetermined information in which the key information is embedded. The mobile communication terminal extracts predetermined information specifying the terminal from the broadcast signal broadcast by the broadcast control apparatus, acquires key information embedded in the predetermined information, and the terminal transmits the key information embedded in the predetermined information. Make settings to use the desired system. Thereby, the information transmission setting system of this invention solves the subject mentioned above.

  Also, in the information transmission setting method of the present invention, the broadcast control device embeds key information for using a desired system in the predetermined information specified by the receiving terminal, and includes the predetermined information in which the key information is embedded. Broadcast a broadcast signal. In addition, the mobile communication terminal extracts predetermined information specifying the own terminal from the broadcast signal, acquires key information embedded in the predetermined information, and uses the desired system by the own terminal using the acquired key information. Set up to do. Thereby, the information transmission method of this invention solves the subject mentioned above.

  That is, according to the present invention, key information for a mobile communication terminal to use a desired system is embedded in predetermined information that identifies the terminal as a receiving terminal and broadcasted as a broadcast signal. Then, the mobile communication terminal extracts predetermined information for identifying the terminal from the broadcast signal, and uses a desired system using the key information embedded therein.

  In the present invention, key information for a mobile communication terminal to use a desired system is embedded in predetermined information that identifies the terminal as a receiving terminal and broadcasted as a broadcast signal. Predetermined information for identifying the terminal is extracted from the signal. The mobile communication terminal uses a desired system using key information embedded therein. Thus, in the present invention, the user does not need to manually input an ID, a password, or the like for connecting to a desired communication system (such as a public WLAN system) while away from home, and safety in terms of security. It is possible to set easily and easily while ensuring.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In the present embodiment, a mobile phone terminal is cited as an example of the mobile communication terminal of the present invention. Of course, this is merely an example, and it goes without saying that the present invention is not limited to this example. Further, in this embodiment, a public WLAN system is taken as an example of a communication system to which a mobile phone terminal connects on the go, but the communication system is not limited to the WLAN system. Further, in the present embodiment, as information set in the mobile phone terminal, an access key (ESSID and password) for connecting to the public WLAN system on the go is exemplified. Of course, the present invention is not limited to the above ESSID and password for the setting information.

[Schematic configuration of the system]
FIG. 1 shows a schematic configuration of an information transmission setting system according to an embodiment of the present invention.

  The system example of FIG. 1 includes a digital broadcasting system, a network such as the Internet, other devices and other systems connected to the network, and the mobile phone terminal 1 of the present embodiment. Note that illustrations of a mobile phone system for the mobile phone terminal 1 to perform a call and data communication and various devices and systems connected to an external network such as the Internet are omitted.

  In FIG. 1, an external network 30 is the Internet or the like, and other systems 31 such as various providers, a WLAN access point 33, a database 32 for the other systems 31 and the like are connected to the network 30. The other system 31 includes providers to which the user of the mobile phone terminal 1 is subscribed, and the other system database 32 has an ESSID and a password required when the mobile phone terminal 1 connects to the WLAN access point 33. Is also stored. Although an actual system configuration is complicated, FIG. 1 shows only an outline of the system.

  The digital broadcasting system includes a digital broadcasting device 22 for transmitting a digital broadcasting signal, a control device 21 for controlling the entire digital broadcasting system, and a user database 23 storing subscriber information of the digital broadcasting. They are connected by the intra-system network 20. In the case of the present embodiment, it is assumed that the user of the mobile phone terminal 1 has a viewer contract for digital broadcasting broadcast by this digital broadcasting system.

  Although details will be described later, in the case of the present embodiment, the control device 21 of the digital broadcasting system sends the ESSID and password required when the mobile phone terminal 1 connects to the WLAN access point 33 via, for example, the external network 30. Get. Next, the control device 21 of the digital broadcasting system embeds the ESSID and password in predetermined information (for example, an EMM packet described later) specifying the receiving terminal (in this case, the mobile phone terminal 1). Then, the control device 21 of the digital broadcasting system broadcasts them from the digital broadcasting device 22. Although the configuration of an actual digital broadcasting system is further complicated, only an outline of the system is shown in FIG.

  The mobile phone terminal 1 is a terminal having at least a WLAN communication function and a digital broadcast receiving function. Further, the mobile phone terminal 1 incorporates or is loaded with an IC card in which subscriber information of a digital broadcast subscribed to by the user and secret key information for unscrambling the digital broadcast signal is registered. The mobile phone terminal 1 receives and decrypts a broadcast signal broadcast from the digital broadcast device 22 by using the digital broadcast reception function using the contractor information and secret key information registered in the IC card. .

  Also, the cellular phone terminal 1 of the present embodiment can connect to the WLAN access point 33 by the WLAN communication function when, for example, an ESSID and a password for connecting to a public WLAN are set in the terminal. . Thereby, the mobile phone terminal 1 can be connected to the external network 30 such as the Internet via the access point 33.

  Although details will be described later, in the case of the present embodiment, the ESSID and the password are embedded in a predetermined packet in the digital broadcast signal and sent to the mobile phone terminal 1. The mobile phone terminal 1 can extract the ESSID and password embedded in the predetermined packet. When accessing the WLAN access point 33, the mobile phone terminal 1 automatically receives the extracted ESSID and password. It can be set to.

  Note that the mobile phone terminal 1 of this embodiment is naturally provided with all other functions of a general mobile phone terminal.

[Schematic configuration of mobile phone terminal]
FIG. 2 shows a schematic configuration of the mobile phone terminal 1 of the present embodiment. Note that FIG. 2 shows only components related to the present invention, and illustration and description of other components included in a general mobile phone terminal are omitted.

  In FIG. 2, the mobile phone terminal of this embodiment has a digital broadcast receiver 12, an IC card module 14, a CPU 10, a WLAN module 11, a RAM 13, and a ROM 15.

  The IC card module 14 has an IC card and an interface to a data bus. The IC card stores in advance digital broadcast subscriber information (user contractor information) and private key information unique to a receiving terminal (in this case, a mobile phone terminal) for unscrambling the digital broadcast signal. Yes.

  The digital broadcast receiving unit 12 has an antenna and a circuit unit for receiving a digital broadcast signal, and uses the contractor information and secret key information registered in the IC card of the IC card module 14 to Is received and decoded. Further, the digital broadcast receiving unit 12 has a packet filter 19. The packet filter 19 extracts only a predetermined packet (for example, an EMM packet described later) from the digital broadcast signal, and transfers the extracted predetermined packet to the CPU 10.

  The WLAN module 11 is a system processing unit that performs various processes for using a desired system in the mobile phone terminal according to the embodiment of the present invention. Specifically, the WLAN module 11 is connected to the WLAN through the WLAN access point 33 in FIG. Module. In order to connect to the WLAN access point 33, it is necessary to set an ESSID and a password in the WLAN module 11. In the case of the present embodiment, these ESSID and password can be automatically set by the CPU 10 as will be described later.

  The RAM 13 is a volatile memory that the CPU 10 uses as a temporary buffer.

  The ROM 15 stores at least various software programs executed by the CPU 10. In this embodiment, as one of these software programs, a WLAN automatic setting program for extracting a WLAN ESSID and password embedded in a predetermined packet of a digital broadcast signal and automatically setting them in the WLAN module 11 is also included. It is. That is, the CPU 10 performs automatic setting processing of an ESSID and a password for the WLAN module 11 as described later by starting and executing the WLAN automatic setting program in the ROM 15.

[Transmission of WLAN ESSID and password]
In the embodiment of the present invention, the key information (in this example, the WLAN ESSID and password) for the mobile phone terminal 1 to connect to the WLAN access point 33 is prepared as a packet identifying the receiving terminal in digital broadcasting. Embed in. The EMM packet is transmitted to the mobile phone terminal 1 through digital broadcasting.

  Here, the EMM packet is a packet in which a receiving terminal capable of extracting the EMM packet from the digital broadcast signal is determined in advance. The EMM packet is a packet encrypted with the same secret key as the secret key stored in the IC card module of the terminal that is the reception target of the packet. In addition, a data area called a private section is secured in this EMM packet.

  That is, in the present embodiment, the ESSID and password necessary for the terminal 1 to connect to the WLAN access point 33 are stored in ASCII data or binary data in the private section of the EMM packet whose reception target is the mobile phone terminal 1. Embed as The EMM packet is encrypted with the same secret key as the secret key stored in the IC card module of the mobile phone terminal 1 and multiplexed with other video data, and the digital broadcast signal is converted into a digital broadcast device. 22 is broadcast.

  FIG. 3 shows the data structure of the private section (private_section) of the EMM packet extracted from the standard (ISO / IEC 13818-1 International Standard) at the International Organization for Standardization / International Electrotechnical Commission. The ESSID and password are embedded in a private data byte (private_data_byte) in the private section, and the EMM packet including the private section is the same secret as the private key stored in the IC card module of the mobile phone terminal 1 Encrypted with a key.

  FIG. 4 shows a flowchart when an ESSID and a password are embedded in an EMM packet for encryption in the digital broadcast system of the present embodiment and a digital broadcast signal including the EMM packet is broadcast. That is, in this flowchart, the control device 21 of the digital broadcast system embeds the ESSID and password for connecting the cellular phone terminal 1 to the WLAN access point 33 in the EMM packet of the digital broadcast signal and encrypts the EMM packet. Then, the control device 21 broadcasts the digital broadcast signal including the encrypted EMM packet from the digital broadcast device 22.

  In FIG. 4, for example, when a broadcast request for an ESSID and password for WLAN connection is received from another system 31 such as a contract provider of the mobile phone terminal 1, or directly from the mobile phone terminal 1 through the mobile phone system or the like. In the case, the control device 21 of the broadcast system 2 performs the process of step S1. That is, as a process of step S1, the control device 21 transmits an EMM packet corresponding to the secret key information stored in the IC card module 14 of the mobile phone terminal 1 from a digital broadcast signal that the digital broadcast device 22 later broadcasts. Extract. In addition, in order to enable the automatic setting of the WLAN in the cellular phone terminal 1 to be performed quickly, the digital broadcast signal from which the EMM packet is extracted is broadcast as early as possible after receiving the broadcast request. It is desirable that the signal is a program signal.

  Next, in step S2, the control device 21 directly accesses the database 32 in which the ESSID and password necessary for the mobile phone terminal 1 to connect to the WLAN access point 33 are registered through the external network 30. Alternatively, access is made via another system 31. The control device 21 acquires the ESSID and password (key information for accessing the WLAN) registered in the database 32. The control device 21 substitutes the acquired ESSID and password for the EMM packet extracted in step S1.

  Next, in step S3, the control device 21 encrypts the EMM packet into which the ESSID and the password are substituted with the same secret key as the secret key stored in the IC card module 14 of the cellular phone terminal 1. To do. That is, the EMM packet is encrypted with the unique secret key information that identifies the receiving terminal (terminal 1), and the secret key information (the secret key information in the IC card module 14 of the mobile phone terminal 1). ) Cannot be used for decryption. In other words, in this embodiment, specific key information (ESSID and password) is put in a packet that can be decrypted only with the private key information specifying the receiving terminal. Therefore, in the case of this embodiment, even when digital broadcasting is used, specific secret information can be safely sent to a specific receiving terminal (mobile phone terminal 1).

  Then, the control device 21 multiplexes the EMM packet with a video, a control packet, and the like as the process of step S4. Thereby, broadcast data is generated.

  Thereafter, the control device 21 sends the broadcast data generated in step S4 to the digital broadcast device 22. The digital broadcast device 22 sends out a broadcast signal having the broadcast data as a digital broadcast.

[Setting of WLAN ESSID and password]
FIG. 5 shows a flowchart when the mobile phone terminal 1 receives the ESSID and password embedded in the EMM packet of the digital broadcast signal as described above and performs automatic WLAN setting.

  In FIG. 5, for example, when a request instruction to connect to the WLAN system is input from the user via an operation unit (not shown), the CPU 10 of the mobile phone terminal (receiving terminal) 1 performs the process of step S11. . That is, the CPU 11 reads the subscriber information of the digital broadcast registered in the IC card module 14 and the secret key information unique to the receiving terminal (mobile phone terminal 1) for unscrambling the digital broadcast signal. The CPU 11 registers the secret key information in the temporary buffer of the RAM 13 in particular. The contractor information is sent to the digital broadcast receiver 12 and used when receiving the digital broadcast.

  Next, the CPU 10 monitors the EMM packet received by the digital broadcast receiving unit 12 and extracted by the packet filter 19 as the process of step S12. Then, the CPU 10 monitors whether the secret key obtained by encrypting the EMM packet matches the secret key information registered in the RAM 13 as the process of step S13. Here, the CPU 11 returns the process to step S12 if the two do not match and continues monitoring, and proceeds to step S14 if the two match.

  In step S14, the CPU 10 decrypts the EMM packet using the secret key registered in the RAM 13. In other words, in this case, the CPU 10 converts the EMM packet encrypted with the unique secret key information specifying the receiving terminal (cell phone terminal 1) as described above into the secret key information (IC card module of the cell phone terminal 1). 14).

  Next, as the process of step S15, the CPU 10 extracts key information embedded in the private section of the EMM packet decrypted in step S14, that is, the ESSID and password for accessing the WLAN.

  Thereafter, the CPU 10 automatically sets the ESSID and password extracted in step S15 as the ESSID and password for the WLAN module 11 to connect to the WLAN access point 33 as processing of step S16. As a result, the WLAN module 11 can be connected to the WLAN access point 33.

[Summary]
As described above, in this embodiment, predetermined key information is embedded in a packet that is encrypted with a unique secret key that identifies the receiving terminal, and decrypted with the unique secret key, and transmitted by broadcasting. Like to do. Thereby, in this embodiment, predetermined key information can be safely sent to the receiving terminal. That is, according to the present embodiment, the user does not need to manually input an ID, a password, or the like for connecting to a desired communication system or the like on the go, and secures safety in terms of security. However, it can be set easily and easily.

  The above description of the embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made according to the design or the like as long as the technical idea according to the present invention is not deviated.

  In the above-described embodiment, the key information for communication setting such as WLAN is transmitted by broadcast. However, for example, unlock key information for entering the room and key information for receiving advance tickets are transmitted by broadcast. Even in this case, the present invention is applicable. In this case, the mobile phone terminal takes out the unlock key information for entering the room and the key information for receiving the advance ticket from the EMM packet of the broadcast signal, and uses the key information for the unlock process and advance ticket at the time of entering the room. Perform proof processing when receiving.

  Further, key information (such as an access key and an unlock key) can be embedded not only in a wireless broadcast but also in a wired broadcast signal. However, even in the case of wired communication, encryption using a unique secret key that identifies the receiving terminal is performed.

  In addition, the present invention is not limited to the mobile phone terminal described in the above-described embodiment, but can be applied to a PDA (PDA: Personal Digital Assistants) having a function for using a desired system and a broadcast receiving function. . Furthermore, the present invention can be applied to various mobile terminals such as a car navigation system, a portable AV device, and a portable personal computer.

It is a figure which shows schematic structure of the information transmission setting system of embodiment of this invention. It is a figure which shows schematic structure of the mobile telephone terminal of this embodiment. It is a figure which shows the data structure of the private section (private_section) of the EMM packet extracted from the standard (ISO / IEC 13818-1 International Standard) of the International Organization for Standardization / International Electrotechnical Commission. 5 is a flowchart when an ESSID and a password are embedded in an EMM packet and encrypted in a broadcasting system, and a digital broadcast signal including the EMM packet is broadcast. 6 is a flowchart when automatic setting of a WLAN is performed by receiving an ESSID and a password embedded in an EMM packet of a digital broadcast signal at a mobile phone terminal.

Explanation of symbols

  1 mobile phone terminal, 10 CPU, 11 WLAN module, 12 digital broadcast receiver, 13 RAM, 14 IC card module, 15 ROM, 19 packet filter, 20 digital broadcast system network, 21 digital broadcast system control device, 22 digital Broadcast equipment, 23 Digital broadcast system user database, 30 External network, 31 Other system, 32 Other system database, 33 WLAN access point

Claims (5)

A broadcast receiver for receiving broadcast signals;
A system processing unit for performing processing for using a desired system;
Predetermined information specifying the terminal is extracted from the broadcast signal received by the broadcast receiving unit, key information embedded in the predetermined information is acquired, and the system processing unit uses the acquired key information to obtain the desired information. A control unit configured to use the system of
A mobile communication terminal. It has a secret key holding unit that holds a secret key unique to its own terminal,
The predetermined information of the broadcast signal is encrypted with a secret key unique to the terminal,
The mobile communication terminal according to claim 1, wherein the control unit decrypts the encryption applied to the extracted predetermined information using the secret key held by the secret key holding unit. A broadcast control device that embeds key information for using a desired system in predetermined information specified by a receiving terminal, and broadcasts a broadcast signal including the predetermined information in which the key information is embedded;
Predetermined information specifying the terminal is extracted from the broadcast signal broadcast by the broadcast control device, key information embedded in the predetermined information is acquired, and the terminal is configured to acquire the desired system by the acquired key information. A mobile communication terminal that performs settings for use;
An information transmission setting system. The broadcast control device encrypts the predetermined information in which the key information is embedded with a secret key unique to the receiving terminal, and broadcasts a broadcast signal including the encrypted predetermined information,
4. The information transmission setting system according to claim 3, wherein the mobile communication terminal holds a secret key unique to the terminal itself and decrypts the encryption applied to the extracted predetermined information with the secret key unique to the terminal itself. A step in which a broadcast control device embeds key information for using a desired system in predetermined information specified by a receiving terminal, and broadcasts a broadcast signal including the predetermined information in which the key information is embedded;
The mobile communication terminal extracts predetermined information specifying the own terminal from the broadcast signal broadcast by the broadcast control device, acquires key information embedded in the predetermined information, and uses the acquired key information to acquire the own terminal Performing a setting for using the desired system,
An information transmission setting method.

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