JP2009284346A - Communication terminal, communication control apparatus, communication network, and communication method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication terminal, a communication control apparatus, a communication system and a communication method capable of giving predetermined ease to a user of a called communication terminal by enabling the user to estimate a calling source even if the called communication terminal does not have history information. <P>SOLUTION: A transmitting-side communication terminal 20 includes: a storage section 23 for storing specific history information, about communications in the past with a receiving-side communication terminal 30, containing telephone numbers; a history decision section 24 for deciding whether the specific history information is included in history information items stored in the storage section 23 while using a telephone number of the receiving-side communication terminal 30 when transmitted to the receiving-side communication terminal 30; and a history transmission section 25 for transmitting to the receiving-side communication terminal 30 the specific history information with the receiving-side communication terminal 30, among history information items stored in the storage section 23, when it is decided by the history decision section 24 that the specific history information is included in the history information items stored in the storage section 23. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a communication terminal that displays a communication history, a communication control device that controls communication by the communication terminal, a communication network that includes the communication terminal and the communication control device, and a communication method thereof.

When there is an incoming call in communication between communication terminals such as a mobile phone, the telephone number of the caller is referred to the telephone book information registered in the communication terminal of the called party (destination), and the telephone number is the phonebook information. If the caller is registered, information such as the name of the caller is displayed on the display screen, and the callee identifies the caller before starting a call. Even if the phone number is not registered in the phone book information, the phone number of the caller and the past communication history (for example, the cumulative number of incoming calls and the date and time of the last call) are displayed on the terminal display screen. And the user of the communication terminal on the receiving side estimates the caller (for example, Patent Document 1).
JP 2008-022241 A JP 2005-197827 A JP 2001-333457 A

  However, in a third-generation mobile phone, a plurality of communication terminals can be used with the same telephone number by replacing a communication card called USIM (Universal Subscriber Identity Module) in which an internal ID code, a telephone number, and the like are recorded. It can be done. However, the above-mentioned phone book information itself and information on outgoing / incoming history when not registered in the phone book information are generally recorded and managed in the memory of each communication terminal instead of the USIM. If the USIM is replaced at the communication terminal, the communication terminal is different from the previous one. As a result, not only the outgoing / incoming history based on the phone book information but also the outgoing / incoming history when not registered in the phone book information as described in Patent Document 1 is not displayed, and the originator based on the past communication history is not displayed. There was a problem that estimation could not be performed at all.

  Therefore, the present invention transmits information about the history of communication with the communication terminal of the transmission source even when the communication terminal of the transmission destination does not store the history information regarding the communication of the past. A communication terminal, a communication control device, a communication network, and a communication method that can be obtained on the destination communication terminal side and can give a predetermined sense of security to the user of the destination communication terminal by estimating the source of the call. The purpose is to do.

  In order to solve the above-described problem, a communication terminal as a transmission source in the present invention stores information on past communication with another communication terminal and includes history information including the telephone number of the other communication terminal. The history information stored between the history storage means and the other communication terminal using the telephone number of the other communication terminal is included in the history information stored in the history storage means when making a call to the other communication terminal. If the history determination unit determines that the history information between the history determination unit for determining whether the history information is stored in the history storage unit and the history information stored in the history storage unit is stored in the history storage unit Among the recorded history information, there is provided history transmitting means for transmitting history information with another communication terminal as a transmission destination to another communication terminal.

  According to the present invention, the history transmitting means in the communication terminal serving as the transmission source determines that the history information with the other communication terminal is included using the telephone number of the other communication terminal serving as the transmission destination. If it is determined by the means, the history information stored in the history storage means is transmitted to the other communication terminal serving as the transmission destination of the history information with the other communication terminal serving as the transmission destination. Yes. Thereby, even if the other communication terminal of the transmission destination does not store the history information related to the past communication, the past communication history with the communication terminal of the transmission source is displayed on the other communication terminal side of the transmission destination. Can be obtained at Therefore, even if the communication terminal is changed by replacing the USIM on the other communication terminal side of the transmission destination, it is possible to know the past communication history with the transmission source as long as the identification number such as the telephone number is the same. Thus, the user of the destination communication terminal can obtain a predetermined sense of security by estimating the source when there is an incoming call.

  Further, the communication terminal of the transmission source in the present invention receives non-falsification information receiving means for receiving non-falsification information indicating non-falsification of history information stored in the history storage means from a communication control device that controls communication between the communication terminals. The history storage means stores the non-falsification information received by the non-falsification information receiving means in association with the history information corresponding to the non-falsification information, and the history transmission means stores the history with other communication terminals. When transmitting information to another communication terminal as a transmission destination, non-falsified information associated with the history information to be transmitted may be transmitted to the other communication terminal together with the history information. By transmitting such non-tampered information, the reliability of the history information transmitted from the communication terminal that is the transmission source is improved, and the user of the communication terminal that is the transmission destination can further feel secure.

  The source communication terminal according to the present invention further includes non-falsification information creating means for creating non-falsification information indicating non-falsification of history information with other communication terminals, and the history storage means includes non-falsification information. The non-falsification information created by the creation unit is stored in association with the history information corresponding to the non-falsification information, and the history transmission unit transmits the history information between the other communication terminals to the other communication terminal as the transmission destination. When doing so, the non-falsified information associated with the history information to be transmitted may be transmitted to other communication terminals together with the history information. By creating the non-falsified information on the communication terminal side that is the transmission source, the reliability of the history information to be transmitted can be improved with a simple configuration.

  In order to solve the above-mentioned problem, the communication terminal of the transmission destination in the present invention is information relating to past communication with one communication terminal serving as the transmission source, and includes a history including the telephone number of the one communication terminal A history receiving means for receiving information and a display means for displaying a communication history with one communication terminal as a transmission source based on the history information received by the history receiving means. Thereby, even if the destination communication terminal does not store the past communication history, the history information about communication with the source communication terminal in the past is obtained on the destination communication terminal side, The communication history can be displayed. Therefore, even if the USIM is replaced on the destination communication terminal side to change the communication terminal, as long as the identification number such as a telephone number is the same, the past communication history with the source can be visually confirmed. Thereby, the user of the communication terminal of the transmission destination can obtain a predetermined sense of security by estimating the transmission source when there is an incoming call.

  The destination communication terminal according to the present invention includes a non-display number storage unit that stores a telephone number of a communication terminal that does not display a communication history based on history information received by the history reception unit, and a history reception unit that has a history A non-display determining means for determining whether the telephone number of the caller included in the history information is included in the telephone number stored in the non-display number storing means when receiving the information, and the display means When the phone number of the caller is included in the non-display list information, the communication history based on the history information received by the history receiving means may not be displayed. As a result, when the communication terminal is not changed by replacing the USIM on the destination communication terminal side, that is, when the communication terminal has history information, telephone book information, etc., the communication terminal of the transmission source Without displaying the transmitted communication history, it is possible to preferentially display the history information and the communication history based on the phone book information. In addition, when the phone number registered in the secret mode function is stored in the hidden number storage means, and the incoming call is received from the communication terminal of the registered phone number, the nature of this function is considered. The display based on the history information received by the history receiving means can be prevented from being performed.

  Further, in the communication terminal of the transmission destination in the present invention, the history receiving means further receives non-falsification information indicating that the history information with the one communication terminal serving as the transmission source has not been falsified, and the history receiving means Using the non-falsification information received by the falsification device, the falsification detection means for detecting the presence or absence of falsification of the history information with one communication terminal, the display means is a history between the communication terminal with the one communication terminal When it is detected that the information is not falsified, the communication history with the one communication terminal as the transmission source may be displayed based on the history information received by the history receiving means. As a result, it is possible to prevent the falsified history information from being displayed on the display means, so that the user of the communication terminal that is the destination can further feel secure.

  Further, in the communication terminal of the transmission destination in the present invention, the history receiving means determines whether or not the history information has been tampered with the one communication terminal serving as the transmission source by the communication control device that controls communication between the communication terminals. The history information received by the history receiving means is received when the history receiving means receives the detection result that the history information between the communication control device and the one communication terminal is not falsified. The communication history with one communication terminal serving as a transmission source may be displayed based on the above. Thereby, since it is possible to prevent the history information altered according to the detection result in the communication control device from being displayed on the display means, the communication terminal of the transmission destination is a communication terminal having a simple configuration. Users can get a sense of security.

  The communication control device according to the present invention is a communication control device that relays a plurality of communication terminals to perform communication. When communication is performed between one communication terminal and another communication terminal, both communication terminals A management means for recording in-zone information for determining whether or not communication is possible, and relaying between one communication terminal and another communication terminal based on the in-zone information recorded in the management means Relay means for establishing communication between both communication terminals, and the relay means, when one communication terminal makes a call to another communication terminal as a transmission source, history information on past communication between the two communication terminals Is transmitted to at least one of the two communication terminals. Since the relay means transmits history information related to past communication between both communication terminals, even if the communication terminal does not have history information, the past communication history with other communication terminals is displayed. Obtainable.

  In the communication control apparatus according to the present invention, the relay means receives history information related to past communication between the two communication terminals from one communication terminal that is a transmission source, and transmits the history information to another communication terminal that is a transmission destination. May be transmitted. Even when the other communication terminal of the transmission destination does not have history information, the past communication history with the other communication terminal of the transmission source can be obtained.

  The communication control device according to the present invention further comprises a security means for creating non-falsification information indicating that history information regarding past communication between both communication terminals is not falsified, and the security means is created by the security means. The created non-falsified information may be transmitted to a communication terminal that stores history information corresponding to the non-falsified information. And the relay means receives non-falsified information corresponding to the history information together with the history information regarding the past communication between the two communication terminals from one communication terminal that is the transmission source, and the other communication terminal that is the transmission destination May be transmitted. By transmitting the non-falsified information indicating non-falsification of the history information to the other communication terminal, the reliability of the history information received on the other communication terminal that is the transmission destination is improved.

  In the communication control apparatus according to the present invention, the relay means receives the non-falsification information corresponding to the history information together with the history information related to the past communication between the two communication terminals from the one communication terminal that is the transmission source. The falsification information is output to the security means, and the security means detects whether or not the history information related to past communication between the two communication terminals has been falsified using the input non-falsification information, and relays the detection result. The relay means may transmit the detection result generated by the guarantee means and the history information regarding the past communication between the two communication terminals to the other communication terminal that is the transmission destination. In this way, the communication control device detects whether or not history information has been tampered with and transmits the detection result, so that it can be received at the other communication terminal that is the destination even though the communication terminal has a simple configuration. The reliability of the history information is improved.

  Further, in the communication control device according to the present invention, when the security means detects falsification of history information related to past communication between both communication terminals, the relay means disconnects communication between one communication terminal and another communication terminal. You may do it. As a result, the altered history information can be prevented from being displayed on other communication terminals.

  Further, the communication control device according to the present invention includes history storage means for storing history information related to past communication between a plurality of communication terminals with the telephone number of the communication terminal, and storing the history information as integrated history information. As an example, when making a call to another communication terminal, whether the integrated history information stored in the history storage means using the telephone numbers of both communication terminals includes history information regarding past communication between the two communication terminals. A history judgment means for judging the history of the past communication between the two communication terminals when the history judgment means judges that the history judgment means contains the history information about the past communication between the two communication terminals. Information may be transmitted to at least one of the communication terminals. Since history information is collectively saved as integrated history information by history saving means that is difficult to access from the outside, highly reliable history information can be obtained without creating non-falsified information. Further, since the history information is stored in the communication control device, it is not necessary to store the history information on each communication terminal side, and the memory of the communication terminal can be used elsewhere.

  The communication control apparatus according to the present invention further includes a selection unit that selects a telephone number of one of the communication terminals with a predetermined algorithm when communication between the communication terminals is established, and the history storage unit includes the selection unit. Corresponding to the telephone number selected in Step 1, history information regarding past communication between a plurality of communication terminals may be stored as integrated history information. By storing history information corresponding to one of the telephone numbers selected by such a predetermined algorithm, history information can be efficiently stored. Further, since the communication history is displayed even when the communication terminal is switched, a sense of security can be obtained.

  The communication method according to the present invention is a communication method in which communication is performed between one communication terminal and another communication terminal using the communication control device, and the communication control device transmits another communication terminal to one communication terminal. Information indicating that communication has been performed between the two communication terminals when the transmission by the first transmission notification step and the first transmission notification step are successful, and the telephone numbers of both communication terminals. Between the communication terminals created in the history information creation step and the history information creation step in which the history creation means of one communication terminal and / or the history creation means of another communication terminal create history information between the two communication terminals The communication control device creates the non-falsification information creation step in which the communication control device creates non-falsification information indicating that the history information has not been falsified, and the non-falsification information created in the non-falsification information creation step. A first transmission step for transmitting to one communication terminal and / or another communication terminal that has created history information between both communication terminals in the creation step, and a history between both communication terminals created in the history information creation step A history information storing step in which the information is associated with the non-falsified information transmitted in the first transmitting step and the one communication terminal and / or another communication terminal stores the information in the storing unit; The history information stored in the storage means stores the history information between the two communication terminals using the second transmission notification step in which the transmission notification is performed and the telephone number of the communication terminal that is the destination of both communication terminals. If the history determination means of the communication terminal that is the sender of both communication terminals determines whether or not the history information between the two communication terminals is included by the determination in the determination step History information between both communication terminals and non-falsified information corresponding to the history information are transmitted by the history transmission means of the communication terminal that is the transmission source of both communication terminals to the communication terminal that is the transmission destination of both communication terminals. And when the history receiving means of the communication terminal that is the transmission destination of both communication terminals receives the second transmission step and the history information and non-falsified information transmitted in the second transmission step, When the falsification detection means detects whether or not the history information between the two communication terminals has been falsified using the non-falsification information, and the falsification detection step does not detect falsification. And a display step of displaying history information between the two communication terminals by the display means of the communication terminal that is the transmission destination of the two communication terminals.

  According to the present invention, in the falsification detection step, the falsification detection means detects whether or not the history information has been falsified using the non-falsification information, and if no falsification is detected in the falsification detection step, the display step The display means of the communication terminal that is the transmission destination of both communication terminals displays the history information. As a result, even if the destination communication terminal does not store the history information related to the past communication, the past communication history with the source communication terminal is displayed on the destination communication terminal side. Can do. Therefore, even if the communication terminal is changed by replacing the USIM on the destination communication terminal side, as long as the identification number such as a telephone number is the same, it is possible to know the past communication history with the transmission source. Thus, the user of the destination communication terminal can obtain a predetermined sense of security by estimating the source when there is an incoming call.

  The communication method according to the present invention is a communication method in which communication is performed between one communication terminal and another communication terminal using the communication control device, and the communication control device transmits another communication terminal to one communication terminal. Information indicating that communication has been performed between the two communication terminals when the transmission by the first transmission notification step and the first transmission notification step are successful, and the telephone numbers of both communication terminals. History information creation step in which the history creation means of the communication control device creates history information between the two communication terminals including the communication information, and the history information between both communication terminals created in the history information creation step is saved in the storage means by the communication control device. A history information storage step to be performed, a second outgoing notification step in which the communication control device performs outgoing notification between the two communication terminals, and the communication between the two communication terminals using the telephone numbers of the two communication terminals. The history determination unit of the communication control device determines whether the information is included in the history information stored in the storage unit of the communication control device, and the history information between both communication terminals is included by the determination in the determination step If it is, the relay means of the communication control device transmits the history information between the two communication terminals to the communication terminal that is the destination of the two communication terminals, and the second transmission step and the second transmission step. If the history receiving means of the communication terminal that is the destination of both communication terminals receives the history information between the two communication terminals, the display means of the communication terminal that is the destination of both communication terminals is between the two communication terminals. And a display step for displaying history information.

  According to this invention, when the history information between both communication terminals is included in the determination in the determination step, the relay means of the communication control device transmits the history information in both communication terminals in the second transmission step. The information is transmitted to the previous communication terminal, and in the display step, the display means of the communication terminal displays the history information. As a result, even if the destination communication terminal does not store the history information related to the past communication, the past communication history with the source communication terminal is displayed on the destination communication terminal side. Can do. Therefore, even if the communication terminal is changed by replacing the USIM on the destination communication terminal side, as long as the identification number such as a telephone number is the same, it is possible to know the past communication history with the transmission source. Thus, the user of the destination communication terminal can obtain a predetermined sense of security by estimating the source when there is an incoming call. In addition, since history information is collectively stored in a communication control device that is difficult to access from the outside, highly reliable history information can be obtained without creating non-falsified information. Further, since the history information is stored in the communication control device, it is not necessary to store the history information on each communication terminal side, and the memory of the communication terminal can be used elsewhere.

  According to the present invention, since history information related to past communication between the communication terminals of the transmission destination and the transmission source is transmitted to the transmission destination, the communication terminal of the transmission destination does not store history information related to past communication. Even so, information about the history of communication with the source communication terminal can be obtained on the destination communication terminal side, and the user of the destination communication terminal can estimate the source. Can give a certain sense of security

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing functions of a communication system 100 according to the first embodiment of the present invention. The communication system 100 transmits a communication network 10 for performing mobile communication, a transmission side communication terminal 20 that transmits history information as a transmission source when connected to the communication network 10 and performs mobile communication, and transmits the history information. The receiving side communication terminal 30 receives as a destination, and the communication control device 40 relays transmission / reception of history information during communication between the communication terminals 20 and 30.

  First, the transmission side communication terminal 20 will be described. The transmission-side communication terminal 20 is a device that has a communication function such as a mobile phone, for example, is connected to the communication network 10 by wireless communication or the like, and performs mobile communication with the reception-side communication terminal 30. Functions as a communication terminal of a transmission source or a transmission destination (receiving side). And when the transmission side communication terminal 20 becomes a transmission origin, the transmission side communication terminal 20 is historical information (henceforth "" below) between the communication terminals 20 and 30 with respect to the reception side communication terminal 30 of a transmission destination. "Specified history information"). In addition to a general communication function, such a transmission-side communication terminal 20 includes a history creation unit 21 that creates specific history information in advance as preprocessing and a specific history information as shown in FIG. Non-falsification information receiving unit (non-falsification information receiving means) 22 for receiving non-falsification information (hereinafter referred to as “specific falsification information”) corresponding to the specific history information from the communication control device 40, the specific history information and the specific non-falsification A storage unit (history storage unit) 23 that stores information in association with each other, and a history determination unit (history determination unit) 24 that determines specific history information to be transmitted as a transmission source among the history information stored in the storage unit 23. And a history transmitting unit 25 that transmits the specific history information determined to be transmitted by the history determining unit 24.

  The history creation unit 21 is a part that creates specific history information as preprocessing for transmitting specific history information from the transmission side communication terminal 20 to the reception side communication terminal 30. Before the transmission side communication terminal 20 communicates with the reception side communication terminal 30 as the transmission source (that is, in the past), the history creation unit 21 conversely with the transmission side communication terminal 20 as the transmission source. When communication is performed, specific history information is created. The specific history information is information in which the telephone number of the transmission side communication terminal 20, the telephone number of the reception side communication terminal 30 and the communication date and time are set as one set. 20 is information indicating whether or not there is a history of communication and the past communication date and time when there is a communication history. The specific history information is created every time communication is established between the communication terminals 20 and 30. The history creation unit 21 outputs the specific history information created in this way to the storage unit 23. The history creation unit 21 also creates history information with other communication terminals and outputs it to the storage unit 23.

  The non-falsification information receiving unit 22 is a part that receives specific non-falsification information created by the communication control device 40 in accordance with the creation of the specific history information from the communication control device 40. The non-falsified information receiving unit 22 receives the specific non-falsified information created by the communication control device 40 when the specific history information is created by the history creating unit 21. The non-falsification information receiving unit 22 outputs the received specific non-falsification information to the storage unit 23. The specific unfalsified information is information created by the communication control device 40 when the receiving communication terminal 30 communicates with the transmitting communication terminal 20 as a source and the specific history information is created by the history creating unit 21. The signature information indicates that the specific history information has not been falsified. The specific non-falsification information is created by calculating the data composed of the telephone number of the transmission source and the telephone number of the transmission destination as one data by using the secret key held by the communication control device 40. As a signature method, for example, an ElGamal signature, a DSA signature, a Schnorr signature, or the like can be used. The non-tampered information receiving unit 22 may receive non-tampered information indicating that other history information has not been tampered with from the communication control device 40 and output it to the storage unit 23.

  The storage unit 23 is a part that stores the specific history information and the specific non-falsified information in association with each other and stores the historical information (including corresponding non-falsified information) with other communication terminals. When the transmission side communication terminal 20 communicates with the reception side communication terminal 30 as a transmission source, the storage unit 23 corresponds to the telephone number of the reception side communication terminal 30 that is the transmission destination from the history determination unit 24 and the telephone number. An instruction to output specific history information is input. When an output instruction or the like is input, the storage unit 23 selects specific history information and specific unfalsified information corresponding to the specific history information from the stored history information, and the selected specific history information is selected. And the specific unfalsified information are output to the history determination unit 24.

  The history information (including specific history information) stored in the storage unit 23 in this way is displayed as data including, for example, a caller telephone number and a communication date and time, as shown in FIG. 2, and communication is established. In addition, the history information exceeding a predetermined number is deleted from the oldest one in order of time so that the predetermined number of preservation is achieved. Further, the history information that can be browsed by the user may be the whole or a part of the history information stored in the storage unit 23, and the two are not necessarily the same. Furthermore, in the case of communication between regions having a time difference, the communication date and time may be corrected by the communication terminals 20 and 30, the communication control device 40, and the like, and stored as history information.

  The history determination unit 24 is a part that determines the history information to be transmitted among the history information stored in the storage unit 23 using the telephone number of the receiving communication terminal 30. In the history determination unit 24, when the telephone number of the receiving communication terminal 30 that is a transmission destination is input by the operation unit (see FIG. 4), the specific history information corresponding to the telephone number is used by using the telephone number. An output instruction is output to the storage unit 23. Then, based on this output instruction, the specific history information and the specific unfalsified information are input from the storage unit 23 to the history determination unit 24, and the history determination unit 24 transmits the input specific history information and the specific non-falsified information as a history. To the unit 25.

  The history transmission unit 25 is a part that transmits the specific history information and the specific unfalsified information to the receiving communication terminal 30. When the specific history information and the specific non-falsification information are input from the history determination unit 24, the history transmission unit 25 sends the information to the receiving communication terminal 30 via the communication network 10 or the communication control device 40. To send.

  Next, the receiving communication terminal 30 will be described. Similarly to the transmission side communication terminal 20, the reception side communication terminal 30 has a communication function such as a mobile phone, and is connected to the communication network 10 by wireless communication or the like to communicate with the transmission side communication terminal 20 through mobile communication. And functions as a communication terminal of a transmission source or a transmission destination (receiving side). And when the receiving side communication terminal 30 becomes a transmission destination (receiving side), the receiving side communication terminal 30 receives specific log | history information and specific non-falsification information from the transmission side communication terminal 20 of a transmission origin. In addition to a general communication function, such a receiving-side communication terminal 30 includes a history receiving unit (history receiving means) 31 that receives specific history information and specific unfalsified information as shown in FIG. A falsification detection unit (falsification detection means) 32 that detects the presence or absence of falsification of specific history information using non-falsification information, and the transmission side based on the specific history information received when falsification is not detected by the falsification detection unit 32 And a display unit (display unit) 33 that displays a communication history with the communication terminal 20.

  The history receiving unit 31 is a part that receives the specific history information and the specific unfalsified information transmitted from the history transmitting unit 25 of the transmission source communication terminal 20 that is the transmission source. When receiving the specific history information and the specific non-falsification information, the history reception unit 31 outputs the information together to the falsification detection unit 32.

  The falsification detection unit 32 is a part that detects the presence or absence of falsification of the specific history information using the received specific non-falsification information. When the specific history information and the specific non-falsification information are input from the history reception unit 31, the falsification detection unit 32 acquires a public key via the communication network 10, and uses the acquired public key to specify the specific information that is signature information. The falsification information is verified to detect whether or not the contents of the specific history information have been falsified. If falsification of specific history information is not detected as a result of detection using the public key, a display instruction signal for displaying a communication history with the transmission side communication terminal 20 is output to the display unit 33 based on the specific history information. On the other hand, if falsification of specific history information is detected as a result of detection using the public key, a non-display instruction signal that does not display a communication history with the transmission side communication terminal 20 based on the specific history information is displayed on the display unit 33. Output to.

  The display unit 33 is a part that displays a communication history with the transmission side communication terminal 20 based on the received specific history information when the falsification detection unit 32 does not detect falsification. When the display unit 33 receives the display instruction signal from the falsification detection unit 32, the display unit 33 displays the communication history with the transmission side communication terminal 20 based on the specific history information, for example, “in the past, as shown in FIG. "Call from a certain party", or "○" for communication history 5 times or more, "△" for communication history 1 to 4 times, "x" for no communication history, etc. To do. On the other hand, when receiving the non-display instruction signal from the falsification detection unit 32, the display unit 33 does not display the communication history based on the specific history information.

  In addition, the receiving communication terminal 30 includes a non-display number storage unit (non-display number storage unit) 34 that stores a telephone number of a communication terminal that does not display a communication history based on the received specific history information, and the received specific information A non-display determination unit (non-display determination means) 35 is further provided for determining whether the telephone number included in the history information is included in the telephone number stored in the non-display number storage unit 34. Even when the display unit 33 receives a display instruction signal from the falsification detection unit 32, the telephone number of the transmission side communication terminal 20 matches the telephone number stored in the non-display number storage unit 34. Does not display the communication history based on the specific history information. Examples of such a non-display number storage unit 34 include personal phone book information registered in the memory of the receiving communication terminal 30 and history information with other communication terminals originally held. When such information is registered, the display unit 33 is made to give priority to the display based on the phone book information and the like. Even when a non-display instruction signal is received from the falsification detection unit 32, if there is the above-described phone book information or history information held in the receiving communication terminal 30, a display based on these information is displayed on the display unit. 33 may be performed.

  As shown in FIG. 4, the communication terminals 20 and 30 have a CPU (Central Processing Unit) 20a, a RAM (Random Access Memory) 20b, a ROM (Read Only Memory) 20c, an operation unit 20d, a wireless communication unit 20e, It is composed of a display 20f and an antenna 20g. When these components operate, the functions of both the communication terminals 20 and 30 described above are exhibited.

  Next, the communication control device 40 will be described. The communication control device 40 relays the two communication terminals 20 and 30 to each other via the communication network 10 to control the mobile communication between the two communication terminals 20 and 30, and performs communication between the two communication terminals 20 and 30. In this case, the device relays transmission / reception of specific history information. As shown in FIG. 1, the communication control device 40 includes a management unit (management means) 41 that records the location information of both communication terminals 20 and 30, and both communications based on the location information recorded in the management unit 41. A relay unit (relay unit) 42 that relays the terminals 20 and 30 and relays transmission / reception of history information, and a security unit (security unit) that creates specific non-falsified information when specific history information is created prior to communication 43.

  The management unit 41 is a part in which the location information of the transmitting communication terminal 20 and the receiving communication terminal 30 is recorded. When an inquiry signal about the location information of the destination communication terminal is input from the relay unit 42, the management unit 41 confirms the recorded location information, and the presence of the communication terminal of the destination that has made the inquiry. The service area information is output to the relay unit 42. The location information recorded in the management unit 41 is information for determining whether communication is possible between the transmission side communication terminal 20 and the reception side communication terminal 30.

  The relay unit 42 establishes communication between the two communication terminals 20 and 30 by relaying between the transmission side communication terminal 20 and the reception side communication terminal 30 based on the location information recorded in the management unit 41 and a specific history. It is a part that relays transmission and reception of information. When there is a connection request from a transmission source communication terminal, for example, the transmission side communication terminal 20, the relay unit 42 transmits the telephone number of the transmission destination communication terminal, for example, the reception side communication terminal 30 together with the connection request. The received telephone number is referred to the location information recorded in the management unit 41. When the telephone number of the destination communication terminal 30B is included in the location information, the relay unit 42 establishes communication between the communication terminals 20 and 30.

  In addition, the relay unit 42 stores the specific history information stored in the storage unit 23 of the transmission-side communication terminal 20 and transmitted from the history transmission unit 25 when the communication between the communication terminals 20 and 30 is established. The falsification information is once received, the received specific history information and the specific non-falsification information are transmitted to the receiving communication terminal 30, and the transmission / reception of the history information and the non-falsification information between the communication terminals 20 and 30 is relayed.

  The security unit 43 is a part that creates specific non-falsification information. The security unit 43 is formed when the receiving communication terminal 30 communicates with the transmitting communication terminal 20 as the transmission source before the transmitting communication terminal 20 communicates with the receiving communication terminal 30 as the transmission source. In accordance with the specific history information, specific non-falsified information indicating that the specific history information has not been falsified is created. The guarantee unit 43 transmits the created specific non-falsified information to the transmitting communication terminal 20 that stores and stores the specific history information via the relay unit 42.

  As shown in FIG. 5, the communication control device 40 includes hardware such as a CPU 40a, RAMs 40b and ROM 40c as main storage devices, a communication module 40d for performing communication, and an auxiliary storage device 40e such as a hard disk. Configured as a computer. And the function of the communication control apparatus 40 mentioned above is exhibited when these components operate | move.

  Subsequently, specific history information and specific unfalsified information creation processing (pre-processing) and communication history display processing (main processing) associated with mobile communication between both communication terminals 20 and 30 according to the present embodiment are shown in FIG. Details will be described with reference to the sequence diagram of FIG.

  First, with reference to the sequence diagram of FIG. 6, processing for creating specific history information and specific unfalsified information associated with communication between the two communication terminals 20 and 30 as preprocessing will be described. In this creation process, the receiving communication terminal 30 transmits to the transmitting communication terminal 20 as a transmission source, creates specific history information in the transmitting communication terminal 20, and the communication control device 40 performs specific non-falsification information. Is transmitted to the transmission side communication terminal 20.

  First, the receiving communication terminal 30 starts calling to the transmitting communication terminal 20 (S101). This call is performed by transmitting a connection request to the transmission side communication terminal 20 from the reception side communication terminal 30 to the relay unit 42 of the communication control device 40. When the telephone number of the transmission side communication terminal 20 is included in the location information recorded in the management unit 41, the relay unit 42 of the communication control device 40 sends a call notification to the transmission side communication terminal 20. Perform (S102). When receiving a call notification, the transmission side communication terminal 20 creates specific history information, which is history information regarding communication with the reception side communication terminal 30, in the history creation unit 21 (S103). In addition, when the communication between the receiving communication terminal 30 and the transmitting communication terminal 20 is established, the transmission is successful.

  Subsequently, the communication control device 40 determines whether or not the transmission is successful (S104). If the transmission is successful, the security unit 43 of the communication control device 40 specifies a specific history between the communication terminals 20 and 30. Specific unfalsified information corresponding to the information is created (S105). In the creation of the non-falsification information, using the secret key held by the communication control device 40, the data composed of the telephone number of the receiving communication terminal 30 and the telephone number of the transmitting communication terminal 20 is calculated as one data, Predetermined signature information is obtained.

  When the specific non-falsification information is created by the guarantee unit 43 of the communication control device 40, the guarantee unit 43 sends the created specific non-falsification information to the non-falsification information of the transmitting communication terminal 20 via the relay unit 42. The data is transmitted to the receiving unit 22 (S106). In addition, the communication control apparatus 40 complete | finishes a creation process, when transmission is not successful. Further, when the non-tampered information receiving unit 22 receives the specific non-tampered information, the transmission side communication terminal 20 stores the specific non-tampered information and the specific history information created in step S103 in association with each other and stores them in the storage unit 23. (S107). After that, it is determined whether or not the communication between the receiving communication terminal 30 and the transmitting communication terminal 20 is disconnected (S108, S109). Finish the creation process. In this way, history information and non-falsified information are created and stored in the storage unit 23 of the transmission side communication terminal 20.

  Next, with reference to the sequence diagram of FIG. 7, a communication history display process associated with communication between the transmission side communication terminal 20 and the reception side communication terminal 30 will be described. In this display process, the transmission side communication terminal 20 transmits to the reception side communication terminal 30 as a transmission source, and the specific history information and the specific non-falsification information held by the transmission side communication terminal 20 are transmitted to the reception side communication terminal 30. At the same time, the reception side communication terminal 30 causes the display unit 33 to display a communication history with the transmission side communication terminal 20 in accordance with the received history information and non-falsified information. In this display process, the receiving side communication terminal 30 of the transmission destination (the receiving side) is changed from the communication terminal 30A having the same configuration to the communication terminal 30B while the common USIM is inserted. Yes.

  First, the USIM is removed from the receiving side communication terminal 30A, and the receiving side communication terminal 30B, which is a new terminal into which this USIM is inserted, is prepared and the terminal is changed (S201). In this receiving side communication terminal 30B, since the USIM of the receiving side communication terminal 30A is exchanged and inserted, the telephone number is the same as that of the receiving side communication terminal 30A, but is stored in the memory or the like of the receiving side communication terminal 30A. It does not have history information or individual phone book information with other communication terminals.

  Subsequently, the transmission side communication terminal 20 starts a call to the reception side communication terminal 30B (S202). Subsequent to the start of calling in step S202, the history determination unit 24 of the transmission side communication terminal 20 uses the telephone number of the reception side communication terminal 30B (that is, the telephone number of the reception side communication terminal 30A before the change) to store the storage unit 23. It is determined whether or not the specific history information is included in the history information stored in (S203).

  As a result of the determination in step S203, if the history information stored in the storage unit 23 includes specific history information having the telephone number of the receiving communication terminal 30B, the history determination unit 24 The history information and the specific unfalsified information are extracted from the storage unit 23 and output to the history transmission unit 25 (S204). If the history information does not include the specific history information having the telephone number of the receiving communication terminal 30B, the history information and the non-falsified information are not extracted. Thereafter, if specific history information or specific unfalsified information is extracted in step S204 in accordance with transmission of a connection request to the receiving communication terminal 30B from the transmitting communication terminal 20 to the communication control device 40, the information Is transmitted to the communication control device 40.

  If the telephone number of the receiving communication terminal 30B is included in the location information, the communication control device 40 issues a call origination notification to the receiving communication terminal 30B (S205). When receiving the transmission notification from the communication control device 40, the receiving communication terminal 30B, if specific history information or specific non-falsification information is transmitted to the communication control device 40, the history receiving unit 31 transmits these information to the communication control device 30. 40. Subsequently, the receiving communication terminal 30B verifies the specific non-falsified information that is signature information using the public key obtained via the communication network 10, and detects whether the received specific history information has been falsified. The determination is made by the unit 32 (S206). If the specific history information is not falsified as a result of the determination in step S206, based on the specific history information received together with the non-falsified information, the communication between the receiving communication terminal 30B and the transmitting communication terminal 20 is performed. The communication history is displayed on the display unit 33 of the receiving communication terminal 30B (S207). As this display method, there is, for example, “a call from a partner who has made a call in the past”. If there is already a past communication history or individual phone book information in the receiving communication terminal 30B, display based on these may be prioritized.

  After the user confirms such display on the display unit 33, the user of the receiving communication terminal 30B answers the phone, and communication between the receiving communication terminal 30B and the transmitting communication terminal 20 is started. Thereafter, it is determined whether or not the communication between the receiving communication terminal 30B and the transmitting communication terminal 20 has been disconnected (S208, S209). When communication is disconnected at any of the communication terminals 20, 30B, the display The process ends. In this way, the communication history is displayed.

  According to the present embodiment, the history determination unit determines that the history information stored in the storage unit 23 of the transmission side communication terminal 20 using the telephone number of the reception side communication terminal 30 that is the transmission destination includes the specific history information. 24, the history transmission unit 25 of the transmission side communication terminal 20 transmits the specific history information among the history information stored in the storage unit 23 to the reception side communication terminal 30 that is the transmission destination. It has become. As a result, even if the receiving side communication terminal 30 of the transmission destination becomes the receiving side communication terminal 30 that does not have past history information or telephone directory information due to replacement of the USIM or the like, both communication terminals 20, It is possible to obtain history information between 30 and the user of the receiving communication terminal 30 can estimate the transmitting communication terminal 20 that is the transmission source.

  In addition, according to the present embodiment, when the history transmission unit 25 of the transmission side communication terminal 20 transmits the specific history information to the reception side communication terminal 30 of the transmission destination, the specific non-falsification information together with the specific history information The data is transmitted to the receiving side communication terminal 30. Thereby, the reliability of the specific history information transmitted can be improved.

  Further, according to the present embodiment, the display unit 33 of the reception side communication terminal 30 displays the communication history with the transmission side communication terminal 20 as the transmission source based on the received specific history information. Thereby, even if the receiving communication terminal 30 does not store the history information, the specific history information can be obtained and the communication history can be displayed.

  Further, according to the present embodiment, the receiving communication terminal 30 detects whether or not the specific history information is falsified by the falsification detection unit 32 using the received specific non-falsification information and detects that the falsification is not falsified. In addition, the communication history with the transmission side communication terminal 20 that is the transmission source is displayed on the display unit 33. As a result, only history information that has not been tampered with can be displayed.

  Further, according to the present embodiment, the relay unit 42 of the communication control device 40 receives the specific history information between the communication terminals 20 and 30 from the transmission side communication terminal 20 and transmits it to the reception side communication terminal 30. It has become. Thereby, even if the receiving communication terminal 30 does not store history information, a communication network that can obtain specific history information and display the communication history can be configured.

  Further, according to the present embodiment, the relay unit 42 of the communication control device 40 creates the specific non-falsification information by the guarantee unit 43 and transmits the specific non-falsification information to the transmitting communication terminal 20 that stores the specific history information. It is supposed to be. Thereby, the transmission side communication terminal 20 can hold the specific history information and the specific unfalsified information and transmit them together, and the reliability of the specific history information can be improved.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the present embodiment, unlike the first embodiment, the communication control device 60 determines whether or not the specific history information has been tampered with, and transmits the detection result to the receiving communication terminal 50.

  As shown in FIG. 8, the communication system 200 according to the present embodiment transmits a communication network 10 for performing mobile communication and history information as a transmission source when performing mobile communication by connecting to the communication network 10. And a communication control device 60 that relays transmission / reception of specific history information during communication between the communication terminals 20 and 50. Is done.

  First, the receiving communication terminal 50 will be described. Similarly to the receiving side communication terminal 30 of the first embodiment, the receiving side communication terminal 50 has a communication function such as a mobile phone, and is connected to the communication network 10 by wireless communication or the like. Is a device for performing mobile communication between them, and functions as a communication terminal of a transmission source or a transmission destination (incoming side). And when the receiving side communication terminal 50 becomes a transmission destination (receiving side), in addition to a general communication function, the receiving side communication terminal 50 receives specific history information and a falsification detection result as shown in FIG. A history receiving unit (history receiving unit) 51 and a display unit (display unit) 53 that displays a communication history with the transmission side communication terminal 20 based on the specific history information when a falsification detection result indicating no falsification is received; It is comprised including.

  The history receiving unit 51 is a part that receives the specific history information transmitted from the history transmitting unit 25 of the transmission source communication terminal 20 that is the transmission source and the falsification detection result transmitted from the communication control device 60. When receiving the specific history information and the falsification detection result, the history receiving unit 51 outputs the specific history information to the display unit 53 when the falsification detection result indicates no falsification. On the other hand, the history receiving unit 51 does not output the specific history information to the display unit 53 when the falsification detection result is falsification. When the specific history information is input from the history receiving unit 51, the display unit 53 displays a communication history with the transmission side communication terminal 20 based on the specific history information. The display method in the display unit 53 is the same as the display unit 33 in the first embodiment. The receiving communication terminal 50 is configured as a computer having hardware as shown in FIG. 2 as with the receiving communication terminal 30, and the operation of these components causes the above-described receiving communication terminal 50 to operate. Function is demonstrated.

  Next, the communication control device 60 will be described. The communication control device 60 relays the two communication terminals 20 and 50 to each other via the communication network 10 to control mobile communication between the two communication terminals 20 and 50, and performs communication between the two communication terminals 20 and 50. In this case, the device relays transmission / reception of specific history information. As shown in FIG. 8, the communication control device 60 includes a management unit (management means) 61 that records the location information between the communication terminals 20 and 50, and both locations based on the location information recorded in the management unit 61. A relay unit 62 that relays between the communication terminals 20 and 50 and transmits / receives specific history information, and a security unit (guarantee) 63 that generates specific non-falsification information when the specific history information is created prior to communication. I have. The management unit 61 and the relay unit 62 have the same functions as the management unit 41 and the relay unit 42 in the first embodiment, and when performing communication between the communication terminals 20 and 50, the relay unit 62 The specific history information and the specific unfalsified information are received together from the transmission side communication terminal 20. In the present embodiment, the relay unit 62 outputs the received specific unfalsified information to the guarantee unit 63.

  The security unit 63 uses the specific non-falsification information when the specific non-falsification information is input from the transmitting communication terminal 20 in addition to creating the specific non-falsification information in the same manner as the security unit 43 in the first embodiment. This is a part that detects whether or not specific history information has been tampered with. When the specific non-falsification information is input from the relay unit 62, the guarantee unit 63 verifies the specific non-falsification information that is signature information using the public key stored in the memory, and the content of the specific history information is falsified. It is detected whether it is done. As a result of detection using the public key, a detection result signal indicating non-falsification is detected if no falsification of specific history information is detected, and falsification is detected if falsification of specific history information is detected. The detection result signals are respectively output to the relay unit 62 and transmitted from the relay unit 62 to the history receiving unit 51 of the receiving communication terminal 50. Similar to the communication control device 40, the communication control device 60 is configured as a computer having hardware as shown in FIG. 5, and the functions of the communication control device 60 described above are exhibited when these components operate. Is done.

  Next, a communication history display process (main process) associated with mobile communication between the communication terminals 20 and 50 according to the present embodiment will be described in detail with reference to the sequence diagram of FIG. In addition, the creation process of the specific history information and the specific unfalsified information between the two communication terminals 20 and 50, which is the preprocessing, is the same as that of the first embodiment. In this display process, the communication terminal 50B from the communication terminal 50A having the same configuration as the first embodiment is inserted into the receiving communication terminal 50 as the transmission destination (the incoming call side) as in the first embodiment. It has been changed to.

  First, as in the first embodiment, the USIM is removed from the receiving communication terminal 50A, and the receiving communication terminal 50B, which is a new terminal into which this USIM is inserted, is prepared and the terminal is changed (S301). Subsequently, Steps S302 to S304 that perform the same processing as Steps S202 to S204 in the first embodiment are performed, and the history transmission unit 25 of the transmission side communication terminal 20 obtains the specific history information and the specific unfalsified information. Output to the communication control device 60.

  The communication control device 60 that has received the specific history information and the specific non-falsification information outputs the specific non-falsification information to the guarantee unit 63. The security unit 63 verifies the specific non-falsified information that is the signature information using the public key stored in the memory, and determines whether the specific history information received by the communication control device 60 has been falsified. Then, a falsification detection result signal is generated (S305). Thereafter, when the telephone number of the receiving communication terminal 50B is included in the location information, the communication control device 60 issues a call origination notification to the receiving communication terminal 50B (S306). Also, the communication control device 60 transmits the received specific history information and the generated falsification detection result signal from the relay unit 62 to the history receiving unit 51 of the receiving communication terminal 50B in accordance with the transmission notification, and receives the receiving communication terminal. The history receiving unit 51 of 50B receives the specific history information and the falsification detection result signal together with the transmission notification from the communication control device 60.

  Subsequently, when receiving the specific history information and the falsification detection result signal, the receiving communication terminal 50B confirms the falsification detection result (S307). As a result, when there is no falsification (non-falsification), the specific history information is output to the display unit 53 and the communication history is displayed (S308). On the other hand, if there is tampering, the communication history based on the specific history information is not displayed. The display method is the same as in the first embodiment.

  After the user confirms such display on the display unit 53, the user of the receiving communication terminal 50B answers the phone, and communication between the receiving communication terminal 50B and the transmitting communication terminal 20 is started. Thereafter, it is determined whether or not the communication between the receiving communication terminal 50B and the transmitting communication terminal 20 has been disconnected (S309, S310). When communication is disconnected at any of the communication terminals 20, 50B, the display The process ends. In this way, the communication history is displayed.

  According to the present embodiment, the security unit 63 of the communication control device 60 detects whether or not history information has been tampered with, and transmits the detection result and history information from the relay unit 62 to the destination communication terminal 50. It has become. Then, when receiving the detection result that the history information is not falsified, the display unit 53 of the destination communication terminal 50 displays the received history information. For this reason, despite the simple configuration of receiving the detection result on the communication terminal side, it is possible not to display the falsified history information according to the detection result, improving the reliability of the history information Can be made.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. In the present embodiment, unlike the first embodiment and the second embodiment, history information (including specific history information) with a plurality of communication terminals is collectively managed and saved by the communication control device 90 as integrated history information. In addition, non-falsification information indicating that each history information has not been falsified is not used.

  As shown in FIG. 10, the communication system 300 according to the present embodiment includes a communication network 10 for performing mobile communication, and transmission of history information as a transmission source when performing mobile communication by connecting to the communication network 10. A transmission side communication terminal 70 that gives an instruction, a reception side communication terminal 80 that receives the history information as a transmission destination, and a communication control device 90 that sends history information during communication between the communication terminals 70 and 80. Is done.

  First, the transmission side communication terminal 70 will be described. The transmission-side communication terminal 70 is a device that has a communication function such as a mobile phone, and is connected to the communication network 10 by wireless communication or the like and performs mobile communication with the reception-side communication terminal 80. Functions as a communication terminal of a transmission source or a transmission destination (receiving side). And when the transmission side communication terminal 70 becomes a transmission origin, the transmission side communication terminal 70 transmits the specific log information regarding the past communication between the communication terminals 70 and 80 to the reception side communication terminal 80 of the transmission destination. A transmission instruction signal is transmitted so that As shown in FIG. 10, such a transmission-side communication terminal 70 includes a communication unit 71 that transmits a transmission instruction signal of specific history information to the communication control device 90 in addition to a general communication function.

  Next, the receiving communication terminal 80 will be described. Similarly to the transmission side communication terminal 70, the reception side communication terminal 80 has a communication function such as a mobile phone, and is connected to the communication network 10 by wireless communication or the like to communicate with the transmission side communication terminal 70 through mobile communication. And functions as a communication terminal of a transmission source or a transmission destination (receiving side). Then, when the receiving communication terminal 80 is a destination (receiving side), the receiving communication terminal 80 receives specific history information from the communication control device 90. In addition to a general communication function, such a receiving-side communication terminal 80 includes a history receiving unit (history receiving unit) 81 that receives specific history information and a specific information received by the history receiving unit 81, as shown in FIG. And a display unit (display unit) 83 that displays a communication history with the transmission-side communication terminal 70 based on the history information.

  The history receiving unit 81 is a part that receives specific history information transmitted from the communication control device 90 based on a transmission instruction signal from the transmission side communication terminal 70 that is the transmission source. When the history receiving unit 81 receives the specific history information, the history receiving unit 81 outputs the information to the display unit 83. When the specific history information is input from the communication control device 90, the display unit 83 displays the communication history with the transmission side communication terminal 70 based on the specific history information. The display method on the display unit 83 is the same as that of the display unit 33 in the first embodiment. Both the communication terminals 70 and 80 are configured as a computer having hardware as shown in FIG. 4 like the communication terminals 20 and 30 of the first embodiment and the communication terminal 50 of the second embodiment. When the element operates, the functions of both the communication terminals 70 and 80 described above are exhibited.

  Next, the communication control device 90 will be described. The communication control device 90 relays the two communication terminals 70 and 80 to each other via the communication network 10 to control mobile communication between the two communication terminals 70 and 80, and performs communication between the two communication terminals 70 and 80. It is a device that transmits specific history information stored at the time. As illustrated in FIG. 10, the communication control device 90 includes a history creation unit 91 that creates specific history information and other history information in advance as preprocessing, and one of the reference in history information including the specific history information. As the integrated history information based on the telephone number selected by the selection unit, the history information including the specific history information generated by the selection unit 92 and the history generation unit 91 is selected. A history storage unit 93 to be stored, a management unit (management means) 94 that records the location information of both communication terminals 70 and 80, and relays between both communication terminals 70 and 80 based on the location information recorded in the management unit 94 In addition, a relay unit (relay unit) 95 that transmits specific history information and a history determination unit 96 that determines specific history information to be transmitted from the integrated history information stored in the history storage unit 93 are included. It is made.

  The history creation unit 91 is a part that creates specific history information as pre-processing for transmitting specific history information to the receiving communication terminal 80. Before the transmission side communication terminal 70 communicates with the reception side communication terminal 80 as the transmission source (that is, in the past), the history creation unit 91 conversely with the transmission side communication terminal 70 as the transmission source. When communication is performed, specific history information is created. The specific history information is information in which the telephone number of the transmission side communication terminal 70, the telephone number of the reception side communication terminal 80, and the communication date and time are set as one set, and the reception side communication terminal 80 is the transmission source communication terminal. This is information indicating whether or not there is a communication history in 70 and the past communication date and time when there is a communication history. The history creation unit 91 outputs the specific history information created in this way to the history storage unit 93. In the history creation unit 91, history information with other communication terminals is similarly created and output to the history storage unit 93.

  The selection unit 92 is a part that selects any one of communication terminals serving as a reference with a predetermined algorithm when storing history information including specific history information. When storing history information regarding communication between the communication terminals 70 and 80 as a predetermined algorithm, for example, the phone numbers are compared from the first digit of the phone number, and the phone number having the first smaller number is used as a reference. You may make it select as a telephone number. Specifically, when communication is performed between the telephone number “090-1879-XXXX” and the telephone number “090-5544-XXXX”, “090-1879-XXXX” having the first small number is the standard. As the telephone number (see FIG. 11).

  The history storage unit 93 is a part that collectively stores specific history information and other history information between the communication terminals 70 and 80 as integrated history information based on the telephone number selected by the selection unit 92. As shown in FIG. 11, each history information stored in the history storage unit 93 is obtained by using the telephone number of one of the communication terminals selected by the selection unit 92 as a reference storage destination telephone number (for example, “090- 1879-XXXX "), and the telephone number of the other communication terminal is stored as a destination telephone number (for example," 090-1111-XXXX ") in association with the reference storage telephone number. The integrated history information stored in the history storage unit 93 is arranged in the order of time when communication is established in the history information collected for each storage destination telephone number. The history information exceeding a certain number is deleted from the oldest in order of time. As described above, when saving each history information based on the phone number of the storage destination, the storage capacity is about half that of saving each history based on the phone number of both the storage destination and the destination. Thus, the history information may not be deleted because the storage capacity of the history storage unit 93 is easily secured.

  The management unit 94 is a part in which the location information of the transmitting communication terminal 70 and the receiving communication terminal 80 is recorded. When there is an inquiry about the location information of the destination communication terminal from the relay unit 95, the management unit 94 confirms the recorded location information, and displays the location information of the destination communication terminal that has received the inquiry. The data is output to the relay unit 95.

  The relay unit 95 establishes communication between the two communication terminals 70 and 80 by relaying between the transmission-side communication terminal 70 and the reception-side communication terminal 80 based on the location information recorded in the management unit 94 and a specific history. This is the part that transmits information. When there is a connection request from the transmission source communication terminal, for example, the transmission side communication terminal 70, the relay unit 95 inquires the received telephone number in the area information recorded in the management unit 94, and the telephone number is present. If it is included in the service area information, communication between both communication terminals 70 and 80 is established. The relay unit 95 receives the specific history information determined to be transmitted by the history determination unit 96, which will be described later, from the history determination unit 96 in accordance with the establishment of communication between the communication terminals 70 and 80, and the received specific history Information is transmitted to the receiving communication terminal 80.

  When the history determination unit 96 performs communication between the communication terminals 70 and 80, the specific history information is included in the integrated history information stored in the history storage unit 72 using the telephone numbers of both communication terminals 70 and 80. It is a part to judge whether or not. When the relay unit 95 receives the connection request and the destination telephone number from the transmission side communication terminal 70, the history determination unit 96 receives the telephone number of the transmission side communication terminal 70 and the telephone number of the reception side communication terminal 80 from the received information. Is extracted, and each telephone number is referred to the integrated history information stored in the history storage unit 93, and is first compared with a storage destination telephone number as a reference. When the telephone number of either one of the communication terminals 70 and 80 that performs communication matches the storage destination telephone number, the remaining one telephone number is then used as the other party associated with the storage destination telephone number. Inquire whether it is saved.

  As a result of such inquiry, when the other party telephone number associated with the storage destination telephone number matches the other telephone number, the history information is extracted from the integrated history information as specific history information. The specific history information thus extracted is history information relating to past communication between the receiving communication terminal 80 and the transmitting communication terminal 70. Then, the specific history information is transmitted to the receiving communication terminal 80 via the relay unit 95. Note that such a communication control device 90 is configured as a computer having hardware as shown in FIG. 5, like the communication control device 40 in the first embodiment and the communication control device 60 in the second embodiment. The functions of the communication control device 90 described above are exhibited by the operation of the constituent elements.

  Subsequently, specific history information creation processing (preprocessing) and communication history display processing (main processing) associated with mobile communication between the communication terminals 70 and 80 according to the present embodiment are performed in the sequence shown in FIGS. This will be described in detail with reference to the drawings.

  First, with reference to the sequence diagram of FIG. 12, specific history information creation processing associated with communication between both communication terminals 70 and 80, which is preprocessing, will be described. In this creation process, the reception side communication terminal 80 transmits to the transmission side communication terminal 70 as a transmission source, and the communication control device 90 creates and stores specific history information.

  First, the receiving communication terminal 80 starts calling to the transmitting communication terminal 70 (S401). This call is performed by transmitting a connection request to the transmission side communication terminal 70 from the reception side communication terminal 80 to the relay unit 95 of the communication control apparatus 90. When the telephone number of the transmission side communication terminal 70 is included in the location information recorded in the management unit 94, the relay unit 95 of the communication control device 90 sends a call notification to the transmission side communication terminal 70. Perform (S402). In addition, when the communication between the receiving communication terminal 80 and the transmitting communication terminal 70 is established, the transmission is successful.

  Subsequently, the communication control device 90 determines whether or not the transmission is successful (S403). When the transmission is successful, the history creation unit 91 of the communication control device 90 specifies the communication terminals 70 and 80. Create history information. Then, the specific history information created by the history creation unit 91 is stored in the history storage unit 93 (S404). If the communication control device 90 has not successfully made the call, the specific history information creation process is terminated. Further, it is determined whether or not the communication between the receiving communication terminal 80 and the transmitting communication terminal 70 has been disconnected (S405, S406), and when the communication is disconnected at any of the communication terminals 70, 80 side. The specific history information creation process is also terminated. In this way, the specific history information is created and stored in the history storage unit 93 of the communication control device 90 based on the telephone number selected by the selection unit 92.

  Next, a communication history display process associated with communication between the transmission side communication terminal 70 and the reception side communication terminal 80 will be described with reference to the sequence diagram of FIG. In this display processing, the transmission side communication terminal 70 transmits to the reception side communication terminal 80 as a transmission source, and the specific history information held by the communication control device 90 is transmitted to the reception side communication terminal 80. 80 displays the communication history with the transmission side communication terminal 70 on the display unit 83 according to the received history information. In this display process, the receiving side communication terminal 80 of the transmission destination (incoming side) is changed from the communication terminal 80A having the same configuration to the communication terminal 80B while the common USIM is inserted. Yes.

  First, the USIM is removed from the receiving side communication terminal 80A, and the receiving side communication terminal 80B, which is a new terminal into which this USIM is inserted, is prepared and the terminal is changed (S501). In this receiving side communication terminal 80B, since the USIM of the receiving side communication terminal 80A is exchanged and inserted, the telephone number is the same as that of the receiving side communication terminal 80A, but is stored in the memory or the like of the receiving side communication terminal 80A. It does not have history information or individual phone book information with other communication terminals.

  Subsequently, the transmission side communication terminal 70 starts calling to the reception side communication terminal 80 (S502). This call is made by transmitting a connection request to the receiving communication terminal 80 from the transmitting communication terminal 70 to the communication control device 90. Subsequent to the start of calling in step S502, the telephone number of the transmission side communication terminal 70 and the telephone number of the reception side communication terminal 80B, that is, the telephone number of the communication terminal 80A are stored in the history storage unit 93 of the communication control device 90. Whether the specific history information is included in the integrated history information is checked for a reference destination (S503).

  As a reference destination confirmation method, first, it is confirmed whether one of the telephone numbers of the transmission side communication terminal 70 and the reception side communication terminal 80B is included in the storage destination telephone number. When one of the telephone numbers is included in the storage destination telephone number, it is confirmed whether the other telephone number is included in the other party telephone number corresponding to the storage destination telephone number. As a result of such confirmation, if both telephone numbers are included in the storage destination telephone number and the destination telephone number corresponding to the storage destination telephone number, the call is made to the number included in the communication history. To be judged.

  As a result of the reference destination confirmation in step S503, it is determined whether or not the call to the receiving communication terminal 80B is to the number included in the integrated history information (S504). If the call is to the telephone number included in the integrated history information, specific history information regarding communication between the transmitting communication terminal 70 and the receiving communication terminal 80B is extracted from the integrated history information (S505). ). Note that history information is not extracted when the call is not made to a telephone number included in the integrated history information.

  Subsequently, the communication control apparatus 90 sends a notification of transmission to the receiving communication terminal 80B, and if the specific history information is extracted in step S505, transmits the specific history information to the receiving communication terminal 80B (S506). . When receiving the call notification, the receiving communication terminal 80B determines whether specific history information has been received (S507). As a result of the determination in step S507, when the history receiving unit 81 receives the specific history information from the communication control device 90, the display unit 83 determines that the transmission side communication terminal 70 and the receiving side communication terminal are based on the history information. A communication history with 80B is displayed (S508). As this display method, there is, for example, “a call from a telephone number that has been transmitted in the past”. In the case where the communication terminal 80B on the receiving side already has a past communication history, individual phone book information, or the like, priority may be given to display based on these.

  After the user confirms such display on the display unit 83, the user of the receiving communication terminal 80B answers the phone, and communication between the transmitting communication terminal 70 and the receiving communication terminal 80B is started. Thereafter, it is determined whether or not the communication between the transmission side communication terminal 70 and the reception side communication terminal 80B has been disconnected (S509, S510). The process ends. In this way, the communication history is displayed.

  According to this embodiment, when it is determined that the history information between the communication terminals 70 and 80 is included in the integrated history information stored in the history storage unit 93 of the communication control device 90, the relay unit 95 The specific history information is transmitted to the history receiving unit 81 of the receiving side communication terminal 80. As described above, since the integrated history information stored in the history storage unit 93 of the communication control device 90 that is difficult to access from the outside is used, highly reliable history information can be obtained without creating non-falsified information. . The receiving communication terminal 80 can display the communication history with the transmitting communication terminal 70 on the display unit 83 based on the highly reliable history information obtained in this way.

  The preferred embodiments of the present invention have been described above. The communication terminals 20, 30, 50, 70, 80, the communication control devices 40, 60, 90, and the communication systems 100, 200, 300 according to the present invention are described above. The present invention is not limited to this embodiment, and various aspects can be taken. For example, in the first and second embodiments, the creation of specific history information, which is preprocessing, is performed by the transmission side communication terminal 20 (see step S103 in FIG. 6), but instead of the transmission side communication terminal 20. Alternatively, the specific history information may be created and stored together with the transmitting communication terminal 20 at, for example, the receiving communication terminals 30 and 50 serving as the transmitting side during preprocessing. In this case, in accordance with the creation of the specific history information, the communication control devices 40 and 60 create non-falsified information indicating that the specific history information is non-falsified and transmit it to the receiving communication terminals 30 and 50. The receiving communication terminals 30 and 50 may receive the non-falsified information from the communication control devices 40 and 60 and store the non-falsified information in correspondence with the specific history information. Such processing is performed by the receiving communication terminals 30 and 50 having functions such as the history creating unit 21, the non-falsified information receiving unit 22, and the storing unit 23 of the transmitting communication terminal 20. Done in the same way. Then, when the receiving communication terminals 30 and 50 are further provided with functions such as the history determination unit 24 and the history transmitting unit 25 of the transmitting communication terminal 20, The specific history information can be transmitted to the communication terminal 20. In this way, even if the USIM is exchanged on the transmission side communication terminal 20 side, it is possible to give a sense of security to the user of the transmission side communication terminal 20.

  In the third embodiment, the history information between the communication terminals 70 and 80 included in the integrated history information stored in the history storage unit 93 of the communication control device 90 is transmitted only to the receiving communication terminal 80 that is the transmission destination. However, the history information may be transmitted to the transmission side communication terminal 70 that is the transmission source. By transmitting in this way, the transmission source can also know the past communication history.

  In the first and second embodiments, the communication control devices 40 and 60 generate non-falsified information indicating that the history information has not been falsified. If it can be held in a place where fraud is not likely to occur even within the terminal (for example, a tamper-resistant IC memory), non-falsified information is created in the transmitting communication terminal 20 ′ as shown in FIG. The portion 26 may be provided. Thus, by creating non-falsified information on the communication terminal side, the reliability of history information transmitted with a simple configuration can be improved.

  In the first to third embodiments, the display of the communication history on the display units 33, 53, and 83 displays that there is a call history in the past. Or the outgoing call history, the incoming call history, and the latest communication date and time may be displayed. Furthermore, information that is desired to be added by the sender, such as an individual name or a nickname, may be displayed in the history information.

  In the first to third embodiments, the communication history is visually displayed. However, instead of the display units 33, 53, and 83, communication is made to the user by changing the type and volume of the ringing tone. The history may be notified, or the communication history may be notified to the user by changing the type and intensity of vibration in the vibration function. In the case of notification by sound, the notification means is configured by hardware such as a speaker and a CPU for driving the speaker. In the case of notification by vibration, the notification means is configured by hardware such as a motor and a CPU for driving the motor. .

  In the first and second embodiments, signature information is used as non-falsified information, but a message authentication code (MAC) may be used instead of the signature information. In this case, the message authentication code can be used as non-falsified information by holding the same secret key at the location where the message authentication code is created and where it is verified. When the message authentication code is used, the public key is not used, so that it is not necessary to obtain the public key via the communication network 10.

  In the first to third embodiments, the transmission side communication terminal and the reception side communication terminal are described as separate terminals for convenience, but each function in the transmission side communication terminal and the reception side communication terminal described above are described. It goes without saying that a communication network may be configured by providing a plurality of one communication terminal having each function.

It is a block diagram which shows the function of the communication system which concerns on 1st Embodiment of this invention. It is a figure which shows the preservation | save example of the historical information which concerns on 1st Embodiment of this invention. It is a figure which shows the example of a display of the communication history which concerns on this invention. It is a figure which shows the hardware constitutions of the communication terminal which concerns on this invention. It is a figure which shows the hardware constitutions of the communication control apparatus which concerns on this invention. It is a sequence diagram explaining creation processing of history information and non-falsification information in the communication system according to the first embodiment of the present invention. It is a sequence diagram explaining the display process of the communication history in the communication system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the function of the communication system which concerns on 2nd Embodiment of this invention. It is a sequence diagram explaining the display process of the communication history in the communication system which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the function of the communication system which concerns on 3rd Embodiment of this invention. It is a figure showing an example of preservation of integrated history information concerning a 3rd embodiment of the present invention. It is a sequence diagram explaining the creation preservation | save process of the historical information in the communication system which concerns on 3rd Embodiment of this invention. It is a sequence diagram explaining the display process of the communication history in the communication system which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the modification of the communication terminal of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Communication network 20,70 ... Transmission side communication terminal, 21 ... History creation part (history creation means), 22 ... Non-falsification information reception part (non-falsification information reception means), 23 ... Storage part (history storage means), 24... History determination unit (history determination unit) 25. History transmission unit (history transmission unit) 26. Non-falsification information creation unit (non-falsification information creation unit) 30, 50, 80. 51, 81 ... History receiving unit (history receiving unit), 32 ... Tamper detection unit (tamper detection unit), 33, 53, 83 ... Display unit (display unit), 34 ... Non-display number storage unit (non-display number storage unit) ), 35... Non-display determination unit (non-display determination unit), 40, 60, 90... Communication control device, 41, 61, 94... Management unit (management unit), 42, 62, 95. , 43, 63 ... security section (security means), 91 ... history creation (History creation means), 92 ... history storage unit (history storage means), 93 ... selection unit (selection means), 96 ... history judgment section (history determining means), 100, 200, 300 ... communication system.

Claims (18)

History storage means for storing history information including past telephone numbers of other communication terminals, which is information related to past communication with the other communication terminals;
Whether or not history information with the other communication terminal is included in the history information stored in the history storage means using the telephone number of the other communication terminal when making a call to the other communication terminal History judging means for judging,
When the history determination unit determines that the history information with the other communication terminal is included in the history information stored in the history storage unit, the history information stored in the history storage unit A history transmitting means for transmitting history information with the other communication terminal as a destination to the other communication terminal;
A communication terminal comprising: Non-falsification information receiving means for receiving non-falsification information indicating non-falsification of history information stored in the history storage means from a communication control device that controls communication between communication terminals,
The history storage means stores the non-falsification information received by the non-falsification information reception means in association with the history information corresponding to the non-falsification information,
The history transmission means, when transmitting history information with the other communication terminal to the other communication terminal as a transmission destination, non-falsified information associated with the history information to be transmitted together with the history information The communication terminal according to claim 1, wherein the communication terminal transmits to the communication terminal. Non-falsified information creating means for creating non-falsified information indicating non-falsification of history information with the other communication terminal,
The history storage means stores the non-falsification information created by the non-falsification information creation means in association with the history information corresponding to the non-falsification information,
The history transmission means, when transmitting history information with the other communication terminal to the other communication terminal as a transmission destination, non-falsified information associated with the history information to be transmitted together with the history information The communication terminal according to claim 1, wherein the communication terminal transmits to the communication terminal. History receiving means for receiving history information including the telephone number of the one communication terminal, which is information related to past communication with the one communication terminal serving as a transmission source;
Display means for displaying a communication history with the one communication terminal serving as a transmission source based on history information received by the history receiving means;
A communication terminal comprising: Non-display number storage means for storing the telephone number of the communication terminal that does not display the communication history based on the history information received by the history reception means;
A non-display judging means for judging whether or not the telephone number of the caller included in the history information is included in the telephone number stored in the non-display number storing means when the history receiving means receives the history information; With
5. The display means does not display a communication history based on the history information received by the history receiving means when the caller telephone number is included in the non-display list information. The communication terminal described in 1. The history receiving means further receives non-falsified information indicating that the history information with the one communication terminal that is a transmission source has not been falsified,
Using non-falsification information received by the history reception means, comprising falsification detection means for detecting the presence or absence of falsification of history information with the one communication terminal;
When the history information between the display means and the one communication terminal is detected as non-falsified by the falsification detection means, the display means is the one that becomes a transmission source based on the history information received by the history reception means. The communication terminal according to claim 4, wherein a communication history with the communication terminal is displayed. The history receiving means receives a detection result on the presence or absence of falsification of history information with the one communication terminal as a transmission source by a communication control device that controls communication between communication terminals,
When the history receiving unit receives a detection result that the history information between the communication control device and the one communication terminal is not falsified, the display unit displays the history information received by the history receiving unit. 6. The communication terminal according to claim 4, wherein a communication history with the one communication terminal serving as a transmission source is displayed based on the communication history. A communication control device that performs communication by relaying a plurality of communication terminals,
A management means for recording location information for determining whether communication between both communication terminals is possible when performing communication between one communication terminal and another communication terminal;
Relay means for relaying between the one communication terminal and the other communication terminal based on the location information recorded in the management means to establish communication between the two communication terminals,
When the one communication terminal makes a call to the other communication terminal as a transmission source, the relay means stores history information regarding past communication between the two communication terminals, at least one of the two communication terminals. A communication control device that transmits to a communication terminal.   The relay means receives history information related to past communication between the two communication terminals from the one communication terminal that is a transmission source, and transmits the history information to the other communication terminal that is a transmission destination. The communication control device according to claim 8. A security means for creating non-falsification information indicating that history information regarding past communication between the two communication terminals is non-falsification;
10. The communication according to claim 9, wherein the guarantee means transmits the created non-falsified information to a communication terminal that stores history information corresponding to the non-falsified information created by the guarantee means. Control device.   The relay means receives non-falsified information corresponding to the history information together with history information about the past communication between the two communication terminals from the one communication terminal that is a source, and the other destination that is a destination The communication control apparatus according to claim 10, wherein the communication control apparatus transmits to a communication terminal. The relay means receives non-falsified information corresponding to the history information together with history information on past communication between the two communication terminals from the one communication terminal that is a transmission source, and the non-falsified information to the guarantee means. Output for
The security means detects the presence or absence of falsification of history information related to past communication between the two communication terminals using the input non-falsified information, and outputs a detection result to the relay means,
The relay means transmits the detection result generated by the guarantee means and history information regarding past communication between the two communication terminals to the other communication terminal as a transmission destination. Item 11. The communication control device according to Item 10.   The relay means disconnects communication between the one communication terminal and the other communication terminal when the guarantee means detects falsification of history information regarding past communication between the two communication terminals. The communication control apparatus according to claim 12. A history storage unit that stores history information related to past communication between a plurality of communication terminals with the telephone number of the communication terminal, and stores the history information as integrated history information;
When the one communication terminal makes a call to the other communication terminal as a transmission source, the integrated history information stored in the history storage means using the telephone numbers of the two communication terminals is used between the two communication terminals. History determination means for determining whether history information about past communication is included,
When the history determination unit determines that the history information regarding the past communication between the two communication terminals is included, the relay unit displays the history information regarding the past communication between the two communication terminals. The communication control apparatus according to claim 8, wherein the communication control apparatus transmits to at least one of the communication terminals. When communication between communication terminals is established, further comprising a selection means for selecting a telephone number of one of the communication terminals with a predetermined algorithm,
15. The history storage unit stores history information related to past communications between the plurality of communication terminals as integrated history information in association with the telephone number selected by the selection unit. Communication control device. The communication terminal according to any one of claims 1 to 3,
A communication terminal according to any one of claims 4 to 7,
The communication system which controls communication between both communication terminals by the communication control apparatus as described in any one of Claims 8-14. A communication method for performing communication between one communication terminal and another communication terminal by a communication control device,
A first call notification step in which a call is sent from the other communication terminal to the one communication terminal by the communication control device;
When the transmission by the first transmission notification step is successful, information indicating that communication between the two communication terminals has been performed, and history information between the two communication terminals including the telephone numbers of the two communication terminals is displayed. A history information creation step created by the history creation means of one communication terminal and / or the history creation means of the other communication terminal;
Non-falsification information creation step in which the communication control device creates non-falsification information indicating that the history information between the two communication terminals created in the history information creation step has not been falsified,
The non-falsification information created in the non-falsification information creation step is transferred to the one communication terminal and / or the other communication terminal in which the communication control device has created history information between the two communication terminals in the history information creation step. A first transmission step for transmitting to;
The one communication terminal and / or the other communication terminal associates the history information between the two communication terminals created in the history information creation step with the non-falsification information transmitted in the first transmission step. A history information storage step to be stored in the storage means;
A second call notification step in which a call notification between the two communication terminals is performed by the communication control device;
Out of the two communication terminals, whether the history information stored in the storage means is included in the history information between the two communication terminals using the telephone number of the communication terminal that is the destination of the two communication terminals. A determination step determined by the history determination means of the original communication terminal;
When history information between the two communication terminals is included in the determination in the determination step, the history information between the two communication terminals and the non-falsified information corresponding to the history information are sent to the destination of the two communication terminals. A second transmission step in which the history transmission means of the communication terminal that is the transmission source of the two communication terminals transmits to the communication terminal to be,
When the history receiving means of the communication terminal that is the destination of the two communication terminals receives the history information and the non-falsified information transmitted in the second transmission step, the communication that is the destination of the two communication terminals A tamper detection step in which a tamper detection means of the terminal detects whether the history information between the two communication terminals has been tampered with using the non-tamper information;
When falsification is not detected in the falsification detection step, a display step of displaying history information between the two communication terminals by the display means of the communication terminal serving as a transmission destination among the two communication terminals;
A communication method comprising: A communication method for performing communication between one communication terminal and another communication terminal by a communication control device,
A first call notification step in which a call is sent from the other communication terminal to the one communication terminal by the communication control device;
When the transmission by the first transmission notification step is successful, information indicating that communication between the two communication terminals has been performed, and history information between the two communication terminals including the telephone numbers of the two communication terminals is displayed. History information creation step created by the history creation means of the communication control device;
A history information storage step in which the communication control device stores history information between the two communication terminals created in the history information creation step;
A second call notification step in which a call notification between the two communication terminals is performed by the communication control device;
The history determination unit of the communication control device determines whether the history information between the communication terminals is included in the history information stored in the storage unit of the communication control device using the telephone numbers of the both communication terminals. A decision step to
When the history information between the two communication terminals is included in the determination in the determination step, the relay unit of the communication control device transmits the history information between the two communication terminals as a transmission destination of the two communication terminals. A second transmission step for transmitting to the terminal;
When history information between the two communication terminals transmitted in the second transmission step is received by the history receiving means of the communication terminal that is the destination of the two communication terminals, the history information of the two communication terminals is the destination A display step in which the display means of the communication terminal displays history information between the two communication terminals; and
A communication method comprising:

Images