JP2021145235A - Terminal device, control method thereof, and program - Google Patents

Abstract

To provide a terminal device, a control method thereof, and a program, which can perform appropriate control in consideration of both security assurance and user convenience when receiving communication.SOLUTION: A terminal device 1 includes a storage unit 16 that stores communication history information which is history of past communication, a communication unit 13 that receives the communication, and a control unit 10 that makes one at least one of determination of whether to release the lock state and determination of whether to output the received communication information on the basis of the communication history information when the communication is received in the locked state that invalidates the user operation.SELECTED DRAWING: Figure 4

Description

The present invention relates to a terminal device, a control method and a program of the terminal device.

In recent years, mobile phone terminals such as smartphones have become widespread. Many mobile phone terminals have a lock function that invalidates the user operation in a predetermined case for security measures and the like. The state in which the user operation is invalidated is referred to as a locked state. As a related technique, for example, Patent Document 1 is known. Patent Document 1 describes that when a telephone receives (receives a call) a call in the locked state, the locked state is released and a call can be made when a pre-registered key operation is input.

JP-A-2002-77371

According to the technique described in Patent Document 1, it is possible to prevent unauthorized use or information leakage by others and protect privacy by releasing the locked state only by a preset operation method. It becomes. However, since a predetermined key operation is always required to release the locked state, the operation at the time of receiving a call becomes complicated. Therefore, in the technique described in Patent Document 1, it is not possible to make a quick call while suppressing complicated operations, and the convenience of the user is not sufficient. That is, the technique described in Patent Document 1 cannot perform appropriate control in consideration of both security assurance and user convenience when receiving a communication. Therefore, it is an object of the present invention to provide a terminal device, a control method and a program of the terminal device, which can perform appropriate control in consideration of both security assurance and user convenience when receiving a communication.

The present invention comprises a storage unit that stores communication history information, which is a history of past communication, a receiving unit that receives communication, and the communication history information when the communication is received in a locked state that invalidates user operations. Provided is a terminal device including a control unit that determines at least one of a determination as to whether or not to release the locked state and a determination as to whether or not to output the received communication information based on the above. ..

The present invention stores the communication history information, which is the history of past communication, receives the communication, and when the communication is received in the locked state that invalidates the user operation, the lock is based on the communication history information. Provided is a method for controlling a terminal device, which determines at least one of a determination as to whether or not to release the state and a determination as to whether or not to output the received communication information.

The present invention stores the communication history information, which is the history of past communication, receives the communication, and when the communication is received in the locked state that invalidates the user operation, the lock is based on the communication history information. Provided is a program for causing a computer to execute a process that determines at least one of a determination as to whether or not to release the state and a determination as to whether or not to output the received communication information.

According to the present invention, it is possible to provide a terminal device, a control method and a program of the terminal device, which can perform appropriate control in consideration of both security assurance and user convenience when receiving a communication. ..

It is a block diagram which shows the structural example of the wireless communication system which concerns on embodiment. It is a figure which shows the display example of the IP wireless call screen in the terminal apparatus which concerns on embodiment. It is a figure which shows the operation image of the lock operation mode of the terminal device which concerns on embodiment. It is a figure which shows the operation image of the lock operation mode of the terminal device which concerns on embodiment. It is a block diagram which shows the structural example of the terminal apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the data example of the reception time table stored in the terminal apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the data example of the reception time table stored in the terminal apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the data example of the reception time table stored in the terminal apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the data example of the reception time table stored in the terminal apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the data example of the reception time table stored in the terminal apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the data example of the reception time table stored in the terminal apparatus which concerns on Embodiment 1. FIG. It is a flowchart which shows the processing example of the terminal apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the data example of the reception time table stored in the terminal apparatus which concerns on Embodiment 2. FIG. It is a flowchart which shows the processing example of the terminal apparatus which concerns on Embodiment 2. It is a figure which shows the data example of the release condition definition table stored in the terminal apparatus which concerns on Embodiment 3. FIG. It is a flowchart which shows the processing example of the terminal apparatus which concerns on Embodiment 3. It is a figure which shows the data example of the transmission time table stored in the terminal apparatus which concerns on Embodiment 4. FIG. It is a flowchart which shows the processing example of the terminal apparatus which concerns on Embodiment 4. FIG. It is a figure which shows the data example of the transmission time table stored in the terminal apparatus which concerns on Embodiment 5. It is a flowchart which shows the processing example of the terminal apparatus which concerns on Embodiment 5.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, the same elements are designated by the same reference numerals, and duplicate explanations are omitted as necessary.

(Outline of Embodiment)
FIG. 1 shows a configuration example of the wireless communication system 100 according to the embodiment. The wireless communication system 100 is a wireless communication system that provides a wireless communication service to a plurality of terminal devices used by a user by using a mobile phone network or the like. As shown in FIG. 1, the wireless communication system 100 includes a management device SV, a mobile phone network NW, a plurality of base stations BS (for example, BS1 to BS3), and a plurality of terminal devices TE (for example, TE1 to TE7). The base station BS is a relay device that performs wireless communication with the terminal device TE and relays the communication of the terminal device TE via the mobile phone network NW. The management device SV executes a process for communicating between the terminal devices TE, for example, a process related to a SIP (Session Initiation Protocol) sequence process for making a call. For example, the management device SV may include a SIP server. Note that, in FIG. 1, the number of base station BSs and the number of terminal devices TE are merely examples, and are not limited to the number in this figure.

The terminal device TE is a wireless communication device that performs wireless communication with another terminal device TE. In the following description, the terminal device TE shall perform IP wireless communication, but is not limited to IP wireless communication, and wireless communication using another communication protocol may be performed. When performing IP wireless communication, the terminal device TE is also called an IP transceiver or a PoC (Push-to-Talk over Cellular) transceiver. The terminal device TE transmits / receives voice and video by a push-to-talk (PTT) method, and can also make individual calls, group calls, simultaneous calls, and neighborhood calls. For example, when a group call is made from a certain terminal device TE, communication is transmitted to all the terminal devices TE belonging to the same group as the source terminal device TE. Further, when a simultaneous call is made from a certain terminal device TE, communication is transmitted to all the terminal devices TE used in the wireless communication system 100. However, the terminal device TE is not limited to half-duplex communication including the push-to-talk system as the communication method, and may perform full-duplex communication. That is, the terminal device TE is not limited to the method of transmitting voice in half-duplex by the push-to-talk method, and may perform communication in full-duplex like a normal mobile phone. A typical communication is a telephone call (voice call or video telephone call), and in each of the following embodiments, an example in which the terminal device TE makes a telephone call will be mainly described. However, communication is not limited to voice calls and video calls. For example, the terminal device TE may perform data communication for transmitting and receiving text messages and images.

The terminal device TE has a call button for making a call, and when the user presses the call button of the terminal device TE, the terminal device TE sends a call to another terminal device TE, and the other terminal device TE has a call button. Make voice and video calls with users. In the push-to-talk half-duplex communication, voice and video can be transmitted only from the terminal device TE on the calling side while the user presses the call button. Therefore, while the user presses the call button on one of the terminal devices TE to speak, even if the user presses the call button on the other terminal device TE, the user cannot speak.

Further, the terminal device TE may be a wireless device dedicated to IP wireless communication, or may be a general-purpose mobile phone terminal such as a smartphone. For example, by installing an IP wireless communication application on a mobile phone terminal, it is possible to make a push-to-talk call with another terminal device or a mobile phone terminal on which another IP wireless communication application is installed. ..

FIG. 2 is a display example of the display screen D1 when an IP wireless communication application is installed on a mobile phone terminal such as a smartphone and used as a terminal device TE. In this case, as shown in FIG. 2, the IP wireless call screen D10, which is the operation screen of the IP wireless communication application, is displayed on the display screen D1 of the terminal device TE. For example, the IP wireless call screen D10 has a user selection unit D11 that displays a user of a communication partner in a selectable manner, and a PTT button (“Push To Talk” button) unit D12 that functions as a call button. By selecting a destination user in the user selection unit D11 and tapping the PTT button unit D12, the user can make a call to the terminal device TE of the selected user and make a call with that user.

<Call reception operation in the locked state>
The call reception operation in the locked state, which is the subject of the embodiment, will be described. As a general function, mobile phone terminals such as smartphones have a lock function that automatically locks when the user does not operate for a predetermined period (for example, 1 minute) in order to take security measures and reduce battery consumption. It has. In the locked mobile phone terminal, the display screen is turned off (off state), and key operations and the like are not accepted. When operating a locked mobile phone terminal, it is necessary to perform predetermined operations such as inputting a password, drawing a pattern, and biometric authentication such as fingerprint authentication or face authentication to release the locked state.

In a mobile phone terminal such as a smartphone on which an IP wireless communication application is installed, an operation pattern when a call sent from a user of another mobile phone terminal is received while in the locked state is set, for example, for IP wireless communication. It can be set by the application. The operation pattern when a call is received in this locked state is referred to as "locked operation mode". Here, it is assumed that setting A or setting B can be set as the lock operation mode, and one of the lock operation modes is set in advance by the user.

3A and 3B show an example of the operation of the terminal device TE when the locked operation modes are the setting A and the setting B, and like FIG. 2, the display example on the display screen D1 of the terminal device TE is shown. There is. As shown in FIG. 3A, in the setting A, when a call is received, the terminal device TE maintains the locked state, leaves the display screen D1 in the off state, and outputs the received call information (call voice) from the speaker. Only works. That is, the setting A is a setting in which when a call is received, the reception operation is performed without releasing the locked state. However, the setting A is not limited to this, and may be an operation in which the call information (communication information) is not output without releasing the locked state. For example, when a call is received, only a ringing tone (notification tone) indicating that the call has been received is output, and after the user of the terminal device TE performs a predetermined operation for releasing the locked state, the call information It may be an operation to output. Further, as shown in FIG. 3B, in the setting B, when a call is received, the terminal device TE temporarily releases the locked state so that the user can operate it, and the display screen D1 shows the IP of the IP wireless communication application. The wireless call screen D10 is displayed, and the received call information (call voice) is output from the speaker. That is, the setting B is a setting that releases the locked state, receives the call, and outputs the call information when the call is received. The time for temporarily releasing the locked state (time for maintaining the unlocked state) in setting B can be arbitrarily set. For example, in setting B, the terminal device TE releases the locked state from the time when the call is received until the time when a predetermined period (for example, 30 seconds) elapses after the end of the call. If no user operation is performed during this predetermined period, the lock state is restored again. Further, if a user operation such as making a reply (reply call) to the originator of the received call is performed during this predetermined period, the unlock period may be extended. Further, for example, after the end of the reply call, the unlocking may be continued until a predetermined period (for example, 30 seconds) elapses, and if the user operation is not performed during that period, the locked state may be set again.

There are the following problems in the operation of such setting A and setting B. That is, when the locked operation mode is set A, the terminal device TE maintains the locked state, although there is a possibility that a third party may hear the call if the terminal device TE is lost or stolen. It is possible to prevent the terminal device TE from being illegally operated by a third party. However, in setting A, when trying to answer a call to a user of another terminal device TE, the user needs to perform an authentication operation to release the locked state, which complicates the operation. In particular, in the case of half-duplex communication, the convenience of the user is greatly impaired because the other party of the incoming call cannot be answered at all unless the locked state is released.

When the locked operation mode is set B, the terminal device TE releases the locked state until a predetermined time (for example, 5 seconds) elapses after the received call ends, and the IP wireless communication application is displayed on the display screen D1. IP wireless call screen D10 is displayed. Therefore, by operating the IP wireless call screen D10 within the predetermined elapsed time after the end of the call, the user can immediately answer the received call without performing the operation for releasing the lock state. That is, the setting B can quickly answer the call to the user of the other terminal device TE as compared with the setting A. However, in setting B, since the locked state is temporarily released when the call is received, there is a possibility that the terminal device TE may be illegally operated by a third party while the locked state is released.

In this way, when the locked operation mode of the terminal device TE is set to setting A, when the terminal device receives a call with high urgency or a call requiring a quick response, the user can use it. It is necessary to perform an authentication operation on the terminal device TE to release the locked state. Therefore, in setting A, although security can be ensured, there is a problem that the response operation to the received call is delayed. Further, in the setting B, although it is possible to respond quickly, there is a problem that it is difficult to ensure security.

According to the technique described in Patent Document 1, it is possible to prevent unauthorized use of a mobile phone terminal and information leakage by permitting a call only by a preset method when receiving a call. Is an urgent matter, and even if the call should be started immediately, it is necessary to perform a predetermined operation set in order to start the call. That is, in the technique described in Patent Document 1, the mobile phone terminal is uniformly locked under any situation, and the lock control is not performed in consideration of the incoming call situation and the transmission situation. That is, even in the technique described in Patent Document 1, a complicated unlocking operation is required at the time of an incoming call, and the call cannot be started quickly even if there is an urgent call, as in the case of the above setting A, which is sufficiently convenient for the user. Cannot be provided. In particular, in half-duplex communication, the user needs to operate the terminal device TE in order to respond to the received communication. Therefore, if the unlocking operation is complicated, a quick response (reply), that is, a quick response Communication becomes difficult, and the convenience of the user is greatly impaired. Also, in full-duplex communication, after the received communication (destination communication) is terminated, if you want to supplement or correct the contents of the previous communication, a call back (communication) is required and the unlock operation is performed. Therefore, it may not be possible to respond quickly (reply).

In response to the problems of setting A and setting B of the locked operation mode described above, in each of the following embodiments, in the wireless communication system, a terminal device such as a mobile phone terminal in which an IP wireless communication application is installed is another terminal device. When a call is received from the terminal device, a determination means for releasing the locked state and outputting communication information (call voice, etc.) is provided. For this determination, in each embodiment, the call history information which is the reception history and the outgoing call history of the past call is referred to. For example, the terminal device measures the interval between received calls and determines whether a quick response to the call is required. Further, for example, the terminal device records the time when the call is made, and estimates whether or not the terminal device is used by a legitimate user. Based on the above determination result, the terminal device automatically switches the locked state in the reception process in the locked state. That is, it is determined whether or not to release the locked state according to the situation of the terminal device. Furthermore, the terminal device automatically switches the communication information output method (output mode) in the reception process in the locked state based on the above determination result. That is, it is determined whether or not to output the communication information according to the situation of the terminal device.

As a result, in a wireless communication system, for example, when a terminal device in which an IP wireless communication application is installed receives communication from another terminal device in a locked state, it is appropriate in consideration of both security assurance and user convenience. It is possible to perform various operations (controls).

(Embodiment 1)
Next, the first embodiment will be described. In the present embodiment, the terminal device records the reception time of the past call as the call history information, and whether or not it is necessary to immediately reply to the call according to the elapsed time from the latest reception time when the call is received. Is determined, and the locked state is released if necessary. The configuration of the wireless communication system according to the present embodiment is the same as that in FIG. That is, the wireless communication system 100 includes, for example, a management device SV, a mobile phone network NW, a plurality of base station BSs, and a plurality of terminal devices 1 (the terminal device according to the present embodiment is referred to as "terminal device 1"). .. The same system configuration is used in the following other embodiments.

<Configuration of terminal device>
FIG. 4 shows a configuration example of the terminal device 1 according to the present embodiment. Similar to the terminal device TE described above, the terminal device 1 is a wireless communication device that transmits and receives voice and video by a push-to-talk method, and is, for example, a mobile phone terminal such as a smartphone in which an IP wireless communication application is installed. .. The terminal device 1 displays the IP wireless call screen D10 of the IP wireless communication application, and the setting A and the setting B can be set as the locked operation mode. The terminal device 1 is not limited to a mobile phone terminal such as a smartphone, and may be a wireless device dedicated to IP wireless communication. Further, the wireless communication is not limited to IP wireless communication, and may be a commercial wireless wireless device using another communication protocol.

As shown in FIG. 4, the terminal device 1 includes a control unit 10, a display unit 11, an input unit 12, a communication unit 13, a voice output unit 14, a timekeeping unit 15, and a storage unit 16. The configuration of FIG. 4 is an example, and other configurations may be used as long as the operation according to the present embodiment is possible.

The control unit 10 is a control unit that controls the operation of each unit of the terminal device 1. For example, the function of the control unit 10 is realized by executing the program stored in the storage unit 16 by a processor such as a CPU (Central Processing Unit). For example, when making a call, the control unit 10 controls the communication unit 13 to make a call to another terminal device 1 in response to a user operation input to the input unit 12, and when receiving a call, the control unit 10 controls the communication unit. The display of the display unit 11 and the output of the voice output unit 14 are controlled according to the call received by the 13. Further, the control unit 10 controls the display unit 11 and the input unit 12 to be in the locked state according to the locked operation mode set in the storage unit 16, and also, when receiving a call, the storage unit 16 makes a call. Control is performed to release the locked state based on the call history information of the history DB (database) 162. In the present embodiment, the control unit 10 refers to the call history DB 162, and the elapsed time from the reception time of the previous call corresponding to the source terminal device of the call received this time to the reception time of the call received this time. If it is shorter than the specified time, the locked state is released. That is, after receiving an incoming call from a certain terminal device, if there is an incoming call from the same terminal device within a predetermined time, the lock state is released.

The display unit 11 is a liquid crystal display, an organic EL display, or the like that constitutes the display screen D1, and is also an interface that displays a GUI (Graphical User Interface) or the like. For example, the display unit 11 displays the setting contents of the terminal device 1, the call status, the IP wireless call screen D10 of the IP wireless communication application, and the like.

The input unit 12 is an input device (operation unit) such as various buttons and a touch panel for the user of the terminal device 1 to operate, and includes an interface for notifying the control unit 10 of the state of the input device. A touch panel may be used to integrally configure the display unit 11 and the input unit 12. For example, the input unit 12 includes a call button that is pressed when making a call, such as the PTT button unit D12 of the IP wireless call screen D10 displayed on the display unit 11. The input unit 12 also includes an operation button that is pressed when operating a peripheral device. The input unit 12 detects the pressed state of the call button or the operation button, and notifies the control unit 10 of the detection result. Further, the input unit 12 includes a voice input unit such as a microphone necessary for a call. Voice can be input to the microphone while the user taps or presses the call button. In the locked state, the input unit 12 (operation unit) accepts only the user operation for releasing the locked state, and does not accept other user operations. That is, the function of the input unit 12 (operation unit) is very limited in the locked state, and the function of accepting a normal user operation is disabled. Therefore, it can be said that the user operation is invalidated in the locked state.

The communication unit 13 is a wireless communication unit that performs IP wireless communication, and enables communication with the management device SV and another terminal device 1 in the wireless communication system 100. The communication unit 13 transmits a call to the other terminal device 1 according to the instruction of the control unit 10, and notifies the control unit 10 of the call received from the other terminal device 1. For example, the wireless communication system 100 is realized by a mobile communication system provided by a mobile communication operator, and the communication unit 13 wirelessly communicates with the base station BS of the mobile communication system to perform wireless communication with the base station BS and a mobile phone. It communicates with the management device SV and another terminal device 1 via the telephone network NW. The communication unit 13 is a transmission unit (transmission unit) that transmits a call to another terminal device 1 in response to a user operation when the lock state is released, and is also a lock state or the lock state is released. If so, it is also a receiving unit that receives a call from another terminal device 1. The communication unit 13 may directly perform wireless communication with another terminal device 1 without going through the base station BS. Further, the communication is not limited to the mobile communication system, and communication may be performed via other communication systems or networks. For example, a commercial wireless system, a wireless LAN, Bluetooth (registered trademark), or the like may be used.

The voice output unit 14 is, for example, a voice output device such as a speaker, and the communication unit 13 outputs the voice of a call received from another terminal device 1, that is, call information (communication information). The timekeeping unit 15 outputs the current time (time information). The timekeeping unit 15 outputs the current time when requested by the control unit 10. The storage unit 16 is, for example, a non-volatile memory such as a flash memory, a hard disk, or the like, and stores programs and data necessary for the operation of the terminal device 1. The storage unit 16 stores setting information related to the terminal device 1, for example, a lock operation setting value 161 indicating a setting of a lock operation mode. In this example, when the lock operation mode is the setting A shown in FIG. 3A, the lock operation setting value 161 is set to "1", and when the lock operation mode is the setting B shown in FIG. 3B, the lock operation setting value 161 is set to "1". "2" is set in the operation setting value 161. Further, the storage unit 16 includes a call history DB (communication history DB) 162 that stores call history information (communication history information) which is a transmission history and reception history of past calls. In the present embodiment, the call history DB 162 stores the reception time table RT1 in which the reception time of the past call and the source terminal device of the call are associated with each other as the call history information.

<Reception time table configuration>
5A to 5F show data examples of the reception time table RT1 stored in the call history DB 162 of the terminal device 1. As shown in FIGS. 5A to 5F, the reception start time of the call received from each terminal device 1 and the reception end time of the call are recorded in the reception time table RT1. 5A to 5F show, for example, in the wireless communication system 100, when the terminal devices TE1 to TE7 of FIG. 1 exist as the terminal device 1, the terminal device TE7 (this terminal device) receives from the other terminal devices TE1 to TE6. This is an example of the reception time tables RT1-1 to RT1-6 of the call. In the present embodiment, like the reception time tables RT1-1 to RT1-6, the reception time table RT1 is independently recorded in the call history DB 162 for each terminal device 1, and the identification information of the terminal device 1 is associated with each other. Be done. In the reception time table RT1, the reception start time column describes the time when the reception of the call is started from each terminal device 1, and the reception end time column records the time when the received call ends. .. In addition, "2018/6/1 7:27:13" which is a description example of the start time of FIG. 5A indicates that it is "June 1, 2018 7:27:13", and other tables. But the same is true. Since it is possible to easily calculate (derive) the call time (communication time) by subtracting the reception start time from the reception end time, the reception time table RT1 records the call time (communication time). The same can be said. Further, the reception time table RT1 may store the reception start time and the talk time in association with each other.

Explaining the recording method of the reception time table RT1, first, when a call is received from another terminal device 1, the control unit 10 of the terminal device 1 identifies the source terminal device from, for example, the received call start message. Here, the identified source terminal device is referred to as MS. Next, the control unit 10 specifies the reception time table RT1 corresponding to the source terminal device MS from the reception time tables RT1-1 to RT1-6 of each terminal device 1 shown in FIGS. 5A to 5F. Here, the specified reception time table is referred to as RT1A.

Further, the control unit 10 acquires the current time from the timekeeping unit 15. Here, the acquired current time is CT. The control unit 10 adds the acquired current time CT to the start time of the specified reception time table RT1A. After that, when the call from the source terminal device MS ends, the control unit 10 acquires the current time CT from the time measuring unit 15 and adds the current time CT to the end time of the reception time table RT1A in which the start time is described. ..

Further, the control unit 10 acquires the current time CT from the time measuring unit 15 at a predetermined cycle (for example, 1 hour), and is in the reception time tables RT1-1 to RT1-6 of each terminal device 1 shown in FIGS. 5A to 5F. From all the records, the records whose end time is separated from the current time CT by a predetermined period (for example, 24 hours) or more are searched, and the corresponding records are deleted from the reception time tables RT1-1 to RT-6. As a result, the reception time table RT1 according to the present embodiment becomes a history of the start time and the end time of each latest call received from the other terminal device 1.

<Processing of terminal device>
Next, the processing at the time of receiving a call of the terminal device 1 according to the present embodiment will be described. The flowchart of FIG. 6 shows a process executed by the control unit 10 of the terminal device 1. First, the control unit 10 of the terminal device 1 waits for the reception of a call from another terminal device 1 when the terminal device 1 is in the locked state. Specifically, as shown in FIG. 6, the control unit 10 determines in S100 whether or not a call has been received from the other terminal device 1, and receives the call from the other terminal device 1 (S100). : Yes), the process proceeds to S110, and if no call is received from the other terminal device 1 (S100: No), the process returns to S100 and the process is repeated.

Upon receiving a call from another terminal device 1, the control unit 10 determines whether the locked operation mode of the terminal device 1 is setting A or setting B. Specifically, the control unit 10 determines in S110 whether or not the locked operation set value 161 of the storage unit 16 is "1", and when the locked operation set value is "1" (S110: Yes), that is, in the case of setting A, the process proceeds to S120, and when the lock operation setting value 161 is not “1” (S110: No), that is, in the case of setting B, the process proceeds to S160.

When the locked operation mode is set A, the control unit 10 identifies the source terminal device MS, identifies the reception time table RT1A, and acquires the current time CT. Specifically, the control unit 10 identifies the source terminal device MS of the call received in S100 in S120. Subsequently, in S130, the control unit 10 identifies the reception time table RT1A corresponding to the source terminal device MS identified in S120 from the reception time table RT1 in the call history DB 162. Further, the control unit 10 acquires the current time CT from the timekeeping unit 15 in S140, and proceeds to S150.

Next, the control unit 10 refers to the record in the specified reception time table RT1A, and searches for a record in which the difference between the reception end time and the current time CT is equal to or less than a predetermined period. In the present embodiment, the difference (elapsed time) obtained by subtracting the reception end time from the current time is defined as X, and the predetermined period serving as a determination criterion for releasing the locked state is defined as PA. The predetermined period PA is, for example, 10 seconds. Specifically, in S150, the control unit 10 refers to the record of the reception time table RT1A of the source terminal device MS specified in S130, and the difference X between the reception end time and the current time CT is predetermined in the reception time table RT1A. It is determined whether or not there is a record of the period PA or less, and if the corresponding record exists (S150: Yes), the process proceeds to S160, and if the corresponding record does not exist (S150: No), the process proceeds to S170. However, the difference (elapsed time) obtained by subtracting the reception start time from the current time may be set as X. In that case, the predetermined period PA may be set to a longer time than when the reception end time is used to calculate the elapsed time. Further, the elapsed time X may be calculated (derived) using an arbitrary time point from the reception start time of the communication to the reception end time, that is, the reception time of the communication.

When there is a record in the reception time table RT1A in which the difference X is less than or equal to a predetermined period, that is, when the source terminal device MS re-transmits a call within at least a predetermined period PA from the previous call end time, the control unit 10 sets the unit 10. Regardless of the setting of the locked operation mode of the storage unit 16, the locked state is released, the call screen of the IP wireless communication application is displayed on the display unit 11, and the voice information of the received call is output from the voice output unit 14. .. When receiving a call, at least the locked state can be released to reduce complicated operations. That is, it is only necessary to release the locked state, and it is not necessary to display the call screen of the IP wireless communication application. By releasing the locked state and displaying the call screen of the IP wireless communication application, that is, by making it possible to press the call button, it is possible to make a reply call more quickly.

The control unit 10 has a case where the locked operation setting value 161 of the storage unit 16 is not "1" (S110: No), or a record in the reception time table RT1A where the difference X is PA or less for a predetermined period (S150). : Yes), the processing flow proceeds to S160. In S160, the control unit 10 releases the locked state and displays the IP wireless call screen D10 of the IP wireless communication application on the display screen D1 of the display unit 11. Further, the control unit 10 outputs the voice information of the received call in S170 following S160 or when there is no record in the reception time table RT1A in which the difference X is PA or less for a predetermined period (S150: No). Output from unit 14.

When the locked state is released in S160, the control unit 10 returns the terminal device 1 to the locked state after a predetermined time S (for example, 30 seconds) has elapsed from the end of the call. This predetermined time S is a time during which the unlocked state continues after the end of the call. That is, the control unit 10 temporarily releases the lock from the start of the call to the time when the predetermined time S elapses after the end of the call. Therefore, the time for releasing the lock state (unlock time) is the time obtained by adding the predetermined time S to the talk time. The predetermined time S may be the same as, but may be different from, the time for transitioning to the locked state when the user does not perform an operation at normal times, not limited to after the end of the call. The time may be set as necessary and sufficient for the user of the terminal device 1 to perform an operation for responding (replying) to the source terminal device. Alternatively, it may be set to a time necessary and sufficient for performing an operation for making a call with another terminal device based on the information of the call received by the user. For example, if the lock state is set when the user operation is not performed for 1 minute at normal times (at a timing other than the end of the call), the predetermined time S after the end of the call is set to a shorter time, for example, 30 seconds. May be set to.

Further, the control unit 10 may set a predetermined time S based on the call history information. For example, in the reception time table RT1A, the number of records whose difference (time difference) between the current time and the reception end time is equal to or less than the predetermined period PG is counted, and the larger the number of records, the longer the predetermined time S may be. That is, when a large number of calls are received from the source terminal device, there is a high possibility that it is necessary to make a call to the source terminal device or another terminal device, so the predetermined time S is set longer.

<Effect of Embodiment 1>
As described above, in the present embodiment, in the terminal device, the reception time table is recorded for each source terminal device, and the source terminal device retransmits the call within a predetermined period from the previous call end time. , I decided to release the locked state. This is because when a call is received from the same source terminal device again in a short period of time after receiving the call from the source terminal device, the user of the source terminal device tells the user of the destination terminal device. It is based on the finding that it is very likely that you are requesting an answer to a call. In such a case, it is preferable for the user to be able to perform a quick user operation rather than to take time and effort for the user operation to ensure security. Therefore, when it is presumed that the source terminal device requests a response to the call at a high degree, the lock state is released, and the control for displaying the IP wireless communication application on the display screen is performed. As a result, the user can quickly answer the call to the source terminal device without performing the operation of unlocking the terminal device. On the other hand, when it cannot be estimated that the degree to which the user of the source terminal device requests the answer to the call is high (when it is estimated to be low), the locked state is not released. That is, when the locked terminal device receives communication from another terminal device, it is possible to perform an appropriate operation (control) in consideration of both security assurance and user convenience.

(Modification 1 of Embodiment 1)
In the first embodiment, even when the user of the terminal device sets the setting A as the operation of the terminal device at the time of receiving an incoming call, the predetermined condition is satisfied (when the condition of S150 is satisfied). The operation of automatically switching to the setting B was performed. However, the present invention is not limited to this, and for example, even when the user has set the setting B, the setting A may be automatically switched to when a predetermined condition is satisfied. Specifically, in S110, when the lock operation setting value 161 is not "1", that is, when the lock operation set value 161 is "2", the process proceeds from (S110: No) to S160 in FIG. First, the process proceeds to S112 (not shown). In S112, after performing the processing corresponding to S120 to S140, the control unit 10 refers to the reception time table RT1A and determines whether or not there is a record having a difference X of PH or less for a predetermined period. Here, the predetermined period PH is a longer time than the predetermined period PA of the first embodiment, and is, for example, one hour. When there is a record having a difference X of PH or less for a predetermined period (S112: Yes), the process proceeds to S160, and the control unit 10 releases the locked state. On the other hand, if there is no record having a difference X of PH or less for a predetermined period (S112: No), the process proceeds to S170. That is, if the source terminal device does not make a call (call) to the destination terminal device within the predetermined period PH, it is determined that the degree of necessity for the destination terminal device to respond is not high, and the setting A is set. Similarly, the call voice is output without releasing the locked state. Alternatively, the call voice may be output after the unlocking operation is normally performed without immediately outputting the call voice. By performing such processing, the security of the terminal device can be further ensured.

(Modification 2 of Embodiment 1)
In the first embodiment, as the operation of the terminal device when receiving a call (communication), a setting A (first operation mode) for not releasing the locked state and a setting B (second operation) for releasing the locked state are performed. An example of preparing two operation modes (mode) and selecting two operation modes based on the communication history information has been described. In other words, in the first embodiment, the control unit of the terminal device determines whether or not to release the locked state based on the communication history information. However, the present invention is not limited to this, and the terminal device may use other processing.

For example, as the first operation mode, an operation mode that does not release the locked state and does not output communication information (call voice, etc.) is used, and as the second operation mode, the locked state is released and communication information (call) is used. An operation mode that outputs (voice, etc.) may be used. Here, the second operation mode is the same as the setting B in the first embodiment. Then, the first operation mode is made to correspond to the setting A of the first embodiment, the second operation mode is made to correspond to the setting B of the first embodiment, and the two operation modes are set as in the first embodiment. The process of selection may be performed. In this case, it can be said that the control unit of the terminal device makes both a determination as to whether or not to release the locked state and a determination as to whether or not to output the communication information based on the communication history information. Even when determining whether to release the locked state and determining whether to output the communication information, the operation mode in which the locked state is released and the communication information is not output is not used. You may.

Further, for example, as the first operation mode, an operation mode in which the lock state is not released and the communication information (call voice) is not output is used, and as the second operation mode, the lock state is not released and the communication information (communication information) (communication information). An operation mode that outputs (call voice, etc.) may be used. Here, the second operation mode is the same as the setting A in the first embodiment. Then, the first operation mode is made to correspond to the setting A of the first embodiment, the second operation mode is made to correspond to the setting B of the first embodiment, and the two operation modes are set as in the first embodiment. The process of selection may be performed. In this case, it can be said that the control unit of the terminal device both determines whether or not to output the communication information based on the communication history information.

As described above, the control unit of the terminal device may perform a process of selecting two operation modes related to the locked state or the output of communication information, not limited to the setting A and the setting B in the first embodiment, that is, the terminal. Based on the communication history information, the control unit of the device may determine at least one of the determination of whether or not to release the locked state and the determination of whether or not to output the communication information.

(Embodiment 2)
Next, the second embodiment will be described. In the first embodiment, the lock state is released (and for IP wireless communication) based on the elapsed time from when the terminal device receives a call from the source terminal device to when the terminal device receives a call from the same source terminal device again. An example of displaying an application) was explained. In the present embodiment, the lock state is released based on the response history (response history) to the source terminal device instead of the elapsed time. The terminal device 1 according to the present embodiment replaces the reception time table RT1 of the first embodiment with the reception time table RT2 in which the source information of the call is associated with the reception time of the past call and the presence / absence of a reply call to the call. Is stored in the call history DB 162. The control unit 10 refers to the call history DB 162, and releases the locked state when there is a continuous call that has not been answered more than a predetermined number of times in a call within a predetermined period corresponding to the source terminal device of the call received this time. .. Other configurations are the same as those in the first embodiment.

<Reception time table configuration>
FIG. 7 shows a configuration example of the reception time table RT2 stored in the terminal device 1 according to the present embodiment. Also in the present embodiment, as in FIGS. 5A to 5F, for example, the terminal device TE7 has a reception time table RT2-1 to RT2-6 for calls received from other terminal devices TE1 to TE6. FIG. 7 shows an example of the reception time table RT2-1 of the call received from the terminal device TE1. The reception time tables RT2-2 to RT2-6 of the terminal devices TE2 to TE6 have the same configuration as the reception time table RT2-1.

As shown in FIG. 7, the reception time table RT2 records the reception start time and the reception end time for each source terminal device 1 as in the reception time table RT1 of the first embodiment, and further indicates whether or not there is a response. Record. That is, the reception time table RT2 shows the reception start time when the call received from the source terminal device 1 is started, the reception end time when the call is finished, and the response call from the terminal device 1 (own terminal device) to the call. Record the response status indicating whether or not there is a call. In FIG. 7, "○" in the response status column indicates that the call was answered within a predetermined time (for example, 1 minute), that is, a reply call was made, and "x" indicates that the call was made. It means that he did not reply to the call within a predetermined time, that is, he did not make a reply call.

Explaining the recording method of the reception time table RT2, first, when the control unit 10 of the terminal device 1 receives a call from another terminal device 1, the source terminal device MS of the received call is the same as in the first embodiment. The reception time table RT2 corresponding to is specified. Here, the specified reception time table is referred to as RT2A. Next, the control unit 10 adds the current time CT to the reception start time of the specified reception time table RT2, and when the call ends, adds the current time CT to the reception end time of the reception time table RT2A.

Further, the control unit 10 monitors whether or not a call is transmitted (replied) to the source terminal device MS of the call for a predetermined period from the end time of the call. For example, the outgoing call history may be recorded in the call history DB 162, and after a predetermined period has elapsed from the end time of the call, the outgoing call history may be referred to to determine whether or not there is an outgoing call within the predetermined period. If a call is made to the source terminal device MS within the specified period, "○" is added to the response status of the corresponding record in the reception time table RT2, and the call to the source terminal device MS is made within the specified period. If there is no transmission of, "x" is added to the response status of the corresponding record in the reception time table RT2.

<Processing of terminal device>
Next, the processing at the time of receiving a call of the terminal device 1 according to the present embodiment will be described. The flowchart of FIG. 8 shows a process executed by the control unit 10 of the terminal device 1. Since S200 to S240 and S260 to S270 are the same as S100 to S140 and S160 to S170 in FIG. 6, detailed description thereof will be omitted.

As shown in FIG. 8, the control unit 10 of the terminal device 1 receives a call from another terminal device 1 when the terminal device 1 is in the locked state in S200, as in the first embodiment (S200: Yes). When the lock operation setting value is "1" (S210: Yes), the source terminal device MS identification process (S220), the reception time table RT2A identification process (S230), and the current time CT acquisition process (S240) are performed. conduct.

Next, the control unit 10 refers to the record in the specified reception time table RT2A, and continuously replies more than a predetermined number of times in the past calls received from the source terminal device MS within a predetermined period. Determine if there are no calls. In the present embodiment, a predetermined period as a determination criterion for releasing the locked state is set as PB, and a predetermined number of times is set as a PC. The predetermined period PB is, for example, 5 minutes, and the predetermined number of times PC is, for example, 3 times. Specifically, in S250, the control unit 10 refers to the record of the reception time table RT2A of the source terminal device MS specified in S230, and responds to the record of the reception time table RT2A within the predetermined period PB. It is determined whether or not no call is continued for a predetermined number of times or more.

The control unit 10 releases the locked state in S260 when the number of unanswered calls within the PB in the reception time table RT2A continues for a predetermined number of times or more (S250: Yes). Further, when the control unit 10 does not make a series of unanswered calls within the PB for a predetermined period more than a predetermined number of times following S260 or in the reception time table RT2A (S250: No), the voice of the received call in S270. Information is output from the audio output unit 14. In addition, the processing is not limited to the above-mentioned processing, and another processing may be performed. For example, the lock state may be released when the own terminal device has not responded to the source terminal device MS more than a predetermined number of times without using the PB for a predetermined period.

<Effect of Embodiment 2>
As described above, in the present embodiment, in the terminal device, the reception time table including the response history is recorded for each source terminal device, and the calls that have not been answered by the PC or more a predetermined number of times continuously within the predetermined period PB. When the call is received again from the source terminal device, the lock state is released. For example, if a call is received from the same source terminal device in a situation where the call is not answered to the source terminal device that is making a frequent call, it is presumed that the source terminal device is requesting a reply to the call. NS. In such a case, by releasing the locked state, the user can quickly answer the call to the calling terminal device without performing the unlocking operation of the terminal device, as in the first embodiment. can. That is, the terminal device can perform an appropriate operation (control) in consideration of both security assurance and user convenience.

(Embodiment 3)
Next, the third embodiment will be described. In the first embodiment, the lock state is released when the elapsed time from the terminal device receiving the call from the source terminal device to receiving the call from the same source terminal device again is within the predetermined period PA. An example of displaying (and displaying an application for IP wireless communication) has been described. In the present embodiment, the predetermined period PA is set according to the length of the previous talk time (communication time) received from the same source terminal device. The terminal device 1 according to the present embodiment records in the storage unit 16 a release condition definition table DT that defines a predetermined period PA, which is a lock state release condition, in addition to the reception time table RT1 as in the first embodiment. .. Other configurations are the same as those in the first embodiment.

<Structure of release condition definition table>
FIG. 9 shows a configuration example of the release condition definition table DT used in the present embodiment. As shown in FIG. 9, the cancellation condition definition table DT is a table defined (set) by associating a predetermined period PA for each talk time (communication time) D described later. In the example of FIG. 9, when the value of the talk time D is small, that is, the talk time is short, the predetermined period PA is set small, and when the value of the talk time D is large, that is, the talk time is long, the predetermined period PA is set large. NS. This is based on the finding that when the call time is long, the source terminal device MS is talking more information than when the call time is short, and it is likely that a reply to the call is required. There is.

<Processing of terminal device>
Next, the details of the processing at the time of receiving a call of the terminal device 1 according to the present embodiment will be described. The flowchart of FIG. 10 shows a process executed by the control unit 10 of the terminal device 1. Since S300 to S340 and S390 to S400 are the same as S100 to S140 and S160 to S170 in FIG. 6, detailed description thereof will be omitted.

That is, the control unit 10 of the terminal device 1 receives a call from the source terminal device MS (S300: Yes) in S300 and the locked operation setting value is "1" (S310), as in the first embodiment. : Yes), the source terminal device MS is identified (S320), the reception time table RT1A of the source terminal device MS is specified from the reception time tables RT1 of FIGS. (S340).

Next, the control unit 10 refers to the record of the specified reception time table RT1A in S350, and identifies the record in which the difference X between the reception end time and the current time CT is the smallest, that is, the latest call time. Subsequently, in S360, the control unit 10 calculates the talk time (communication time) D in the latest call with the source terminal device MS from the reception start time and the reception end time of the record specified in S350. Further, in S370, the control unit 10 determines the predetermined period PA from the talk time D of the record obtained in S360 and the cancellation condition definition table DT in FIG.

Next, in S380, the control unit 10 determines whether or not the difference X obtained in S350 is equal to or less than the predetermined period PA determined in S370. When the difference X is PA or less for a predetermined period (S380: Yes), the control unit 10 releases the locked state in S390. When the difference X is larger than the PA for a predetermined period (S380: No), the control unit 10 outputs the voice information of the call received in S400 from the voice output unit 14.

<Specific example of processing of terminal device>
A specific example of processing at the time of receiving a call of the terminal device 1 according to the present embodiment will be described. For example, when a call is received in a situation where the reception time tables RT1-1 to RT1-6 of FIGS. 5A to 5F are stored, and the source terminal device MS of the received call is the terminal device TE1, the terminal device The reception time table RT1-1 relating to TE1 is specified to be the reception time table RT1A of the source terminal device MS.

For example, when a call is received from the terminal device TE1 at "2018/6/1 13:27:30", referring to the reception time table RT1A, the third record from the top with the difference X of "4 seconds" is the latest. Identified as a record of. Since the reception start time of this record is "2018/6/1 13:27:22" and the reception end time is "2018/6/1 13:27:26", the talk time D starts reception from the reception end time. It is calculated as "4 seconds" by subtracting the time. Then, the predetermined period PA is determined to be "3 seconds" by the release condition definition table DT shown in FIG. In this case, since the difference X is "4 seconds" and the predetermined period PA is "3 seconds", it is determined that the lock state is not released and the IP wireless communication application is not displayed.

As another example, when a call is received from the terminal device TE1 to "2018/6/1 22:26:40", referring to the reception time table RT1A, the difference X is "6 seconds", which is the fifth from the top. The record is identified as the most recent record. Since the reception start time of this record is "2018/6/1 22:26:12" and the reception end time is "2018/6/1 22:26:34", the call time D is calculated as "22 seconds". Will be done. Then, the predetermined period PA is determined to be "7 seconds" by the release condition definition table DT shown in FIG. In this case, since the difference X is "6 seconds" and the predetermined period PA is "7 seconds", it is determined that the lock state is released and the IP wireless communication application is displayed.

<Effect of Embodiment 3>
As described above, in the present embodiment, as in the first embodiment, when the calling terminal device makes another call within a predetermined period PA from the previous call end time, the process of releasing the locked state is performed. , It was decided to set the PA for a predetermined period according to the amount of information of the previous call of the same source terminal device, that is, the call time. If the last call time is long, there is a high need to answer the call because it may be an important conversation. In addition, when the amount of information in the previous call is large, it may take longer than usual to determine how to answer the call. For example, it may take time to think about the content of the response to the user of the source terminal device. Alternatively, when the content of the call received from the source terminal device is transmitted to the user of another terminal device, it may take time to organize and think about the content of the call. Therefore, by setting the PA for a predetermined period according to the talk time, it is possible to determine with higher accuracy whether or not to release the locked state and display the IP wireless communication application.

(Modification 1 of Embodiment 3)
In the third embodiment, when a call is received from the calling terminal device, the PA is set for a predetermined period based on the talk time of only the latest call of the same source terminal device. Further, as a modification 1 of the third embodiment, the talk time of a plurality of past calls may be considered. For example, when 10 calls are received from the same source terminal device in the past, the PA is set for a predetermined period based on the representative values (average value, median value, mode value, etc.) of the 10 calls. You may. Further, a representative value of the talk time of a call received from the same source terminal device may be calculated in a predetermined period (for example, one day) longer than the predetermined period PA. Further, for example, the talk time of the latest call may be compared with the talk time of the past call before that, and the PA may be set for a predetermined period according to the comparison result. When multiple calls are made from the same source terminal device and the call time of multiple calls is always long, it may be difficult to judge the importance of the call content depending on whether the call time of the latest call is long or not. There is. For example, the user of the source terminal device may habitually have a long talk. On the other hand, when the talk time of a plurality of calls is always short, the long talk time of the latest call may be an unusually important call. Therefore, when the talk time (for example, average value) of the past call before the latest call is compared with the talk time of the latest call, the talk time of the latest call is longer than the talk time of the past call. , PA may be set longer for a predetermined period.

(Modification 2 of Embodiment 3)
Further, as a modification 2 of the third embodiment, the locked state may be released based on the talk time of the previous call obtained in the third embodiment. That is, the terminal device 1 may release the locked state by referring to the call history information and when the talk time of the previous call corresponding to the source information of the call received this time is longer than a predetermined time.

(Modification 3 of Embodiment 3)
Further, as a modification 3 of the third embodiment, the method of setting the predetermined period PA of the third embodiment may be applied to the second embodiment. That is, as in the second embodiment, when a call is received again from the source terminal device in which there is a call that has not been answered by the PC or more a predetermined number of times in a row within the PB for a predetermined period, the process of releasing the locked state is performed. The predetermined period PB and the predetermined number of PCs may be set according to the talk time of the previous call. For example, as the talk time of the previous call or the past call becomes longer, the PB may be set longer for a predetermined period and the PC may be set less a predetermined number of times.

(Embodiment 4)
Next, the fourth embodiment will be described. In the first to third embodiments, when the terminal device receives a call from the source terminal device and then receives a call from the same source terminal device again, it is based on the elapsed time from the previous reception and the response history. , An example of controlling the release of the locked state (and the display of the IP wireless communication application) has been described. In the present embodiment, when a terminal device that is locked after making a call to another terminal device receives a call from any of the terminal devices, the difference (elapsed time) from the past outgoing time is used. Determine whether to release the locked state.

As described above, when the locked operation mode is set A, that is, in the operation of outputting the received call information from the voice output unit while maintaining the locked state when receiving a call, when the terminal device is stolen or lost, a third party It is possible to prevent unauthorized operation of the terminal device due to. However, even when a legitimate user, not a third party, is using the terminal device, the operation is complicated because the user needs to perform an authentication operation to release the locked state when making a call. ..

Therefore, in the present embodiment, when it is presumed that there is an extremely high possibility that the terminal device is being used by a legitimate user when the terminal device receives a call, the locked operation mode is set to A. Also displays the unlocked and IP wireless communication applications. The terminal device 1 according to the present embodiment records the transmission time table ST1 including the transmission time of the past call in the call history DB 162 instead of the reception time table RT1 of the first embodiment. The control unit 10 refers to the call history DB 162, and releases the locked state when the elapsed time from the outgoing time of the previous call to the received time of the received call this time is shorter than the predetermined time. Other configurations are the same as those in the first embodiment.

<Outgoing time table configuration>
FIG. 11 shows a configuration example of the transmission time table ST1 stored in the terminal device 1 according to the present embodiment. FIG. 11 shows, for example, a transmission time table ST1 when the terminal device TE7 transmits to another terminal device TE1 to TE6 when the terminal device TE1 to TE7 of FIG. 1 exists as the terminal device 1 in the wireless communication system. This is an example.

As shown in FIG. 11, the outgoing call time table ST1 includes the terminal device name, the outgoing call start time which is the time when the call is started, and the outgoing call end time which is the time when the call is ended. In the terminal device name, the terminal device name of the destination terminal device is recorded. Here, the destination terminal device when a call is made is referred to as MD. In the outgoing call start time, the time when the call is made to the destination terminal device MD in response to the user operation is stored, and in the outgoing call end time, the time when the outgoing call is ended is recorded. One transmission time table ST1 is generated in the terminal device 1, and the latest transmission start time and transmission end time are recorded for each transmission destination terminal device. In the present embodiment, it is possible to omit the recording of the terminal device name of the transmission destination terminal device in the transmission time table ST1. For example, in the transmission time table ST1, only the latest transmission start time and transmission end time of transmission to any terminal device may be recorded without distinguishing the transmission destination terminal device.

Explaining the recording method of the outgoing time table ST1, first, when the user of the terminal device 1 performs a outgoing call operation, the control unit 10 of the terminal device 1 sets the call destination terminal device MD that makes a call according to the operation. Identify. Further, the control unit 10 acquires the current time CT from the time measuring unit 15 and overwrites the current time CT with the transmission start time of the record corresponding to the transmission destination terminal device MD in the transmission time table ST1. Further, when the transmission is completed, the control unit 10 acquires the current time CT from the time counting unit 15 and overwrites the current time CT with the transmission end time of the record corresponding to the transmission destination terminal device MD in the transmission time table ST1. do.

<Processing of terminal device>
Next, the processing at the time of receiving a call of the terminal device 1 according to the present embodiment will be described. The flowchart of FIG. 12 shows a process executed by the control unit 10 of the terminal device 1. Since S500, S510, S520, and S540 to S550 are the same as S100, S110, S120, S140, and S160 to S170 of FIG. 6, respectively, detailed description thereof will be omitted.

As shown in FIG. 12, the control unit 10 of the terminal device 1 receives a call from another terminal device 1 when the terminal device 1 is in the locked state in S500, as in the first embodiment (S500: Yes). When the locked operation set value is "1" (S510: Yes), the current time CT is acquired from the time counting unit 15 (S520).

Next, the control unit 10 refers to the record in the transmission time table ST1 and searches for a record in which the difference between the transmission start time and the current time CT is equal to or less than a predetermined period. In the present embodiment, the difference (elapsed time) obtained by subtracting the transmission start time from the current time is defined as Y, and the predetermined period serving as a determination criterion for releasing the locked state is defined as PD. The predetermined period PD is, for example, 10 minutes. Specifically, in S530, the control unit 10 refers to the record in the transmission time table ST1 and determines whether or not there is a record in which the difference Y between the transmission start time and the current time CT is within the predetermined period PD. .. At this time, the control unit 10 detects a record having a difference Y of PD or less for a predetermined period for all the terminal devices stored in the transmission time table ST1. Here, the difference Y is the difference between the transmission start time and the current time CT, but is not limited to this, and may be the difference between the transmission end time and the current time CT.

When there is a record in the transmission time table ST1 in which the difference Y is PD or less for a predetermined period (S530: Yes), the control unit 10 releases the locked state in S540 regardless of the setting of the locked operation mode of the storage unit 16. At the same time, the IP wireless communication application is displayed on the display screen. Following S5410, or when there is no record in the outgoing time table ST1 in which the difference Y is PD or less for a predetermined period (S530: No), the control unit 10 outputs the voice information of the received call in the voice output unit 14 in S550. Output from.

<Effect of Embodiment 4>
In the present embodiment, the time when the user makes a call using the terminal device is recorded, and when the call is received, the lock state is released by the difference between the latest call time and the current time, and the IP wireless communication application. It was decided to display it. This is because the outgoing time when the user of the terminal device makes a call is the time when the terminal device is unlocked, that is, the time when the terminal device is used by a legitimate user, and the difference between the current times is within a predetermined period. It is based on the finding that when a call is received from another terminal device, it is highly likely that the terminal device is being used by a legitimate user. In such a case, by releasing the locked state, it is possible to quickly start a call without performing a complicated unlocking operation as in the first to third embodiments. That is, when the terminal device receives a communication from another terminal device, the terminal device can perform an appropriate operation (control) in consideration of both security assurance and user convenience.

(Modification 1 of Embodiment 4)
In the fourth embodiment, the lock state is released when a call is received within a predetermined period PD after making a call to any of the terminal devices without limiting the destination terminal device. Further, as a modification 1 of the fourth embodiment, the locked state may be released when a call is received from the terminal device within a predetermined period PD after making a call to a certain terminal device. As the call history information, as shown in FIG. 11, the call history information of the past call and the call destination information are stored in association with each other, and the control unit 10 refers to the call history information and the source of the call received this time. If the elapsed time from the outgoing time of the previous call corresponding to the information to the received time of the received call this time is shorter than the predetermined time, the locked state may be released.

That is, in the first modification, the condition that the most recently transmitted terminal device and the received terminal device are the same is added to the fourth embodiment. Specifically, in S130 of FIG. 12, the control unit 10 refers to the transmission time table ST1 of FIG. 11, the difference Y is PD or less for a predetermined period, and the terminal device name is the same as the terminal device received in S500. Determines if a record that is is present. Then, when the condition (predetermined condition) is satisfied, the locked state is released.

Other processing is the same as that of the fourth embodiment. If a call is received from the terminal device of the other party who made the call within a short time, it is highly possible that the call is a content that changes the content of the previous call. That is, it is likely to be an important call. Therefore, it is desirable to release the locked state. Further, since the time elapsed from the end of the previous call is short, it is very unlikely that a third party other than the legitimate user is using the terminal device after the end of the previous call. Also, especially when the communication is a voice call or a video call, if a third party makes a call, the other party may be able to detect that the call is a third party, so the third party makes the call. Very unlikely to do. Therefore, it is desirable to release the locked state.

(Modification 2 of Embodiment 4)
In the fourth embodiment, the predetermined period PD is set to a constant value (fixed value), but as a modification 2 of the fourth embodiment, the predetermined period PA is set according to the talk time D in the third embodiment. Similarly, PD may be set for a predetermined period according to the talk time D. Specifically, the storage unit 16 stores a release condition definition table in which the range of the talk time D and the predetermined period PD are associated with each other, as in FIG.

Further, in S530 of FIG. 12, the control unit 10 calculates the latest talk time D with the terminal device received in S500 with reference to the transmission time table ST1 of FIG. For example, when the S500 receives a call from the terminal device TE1 after making the latest call to the terminal device TE1, the time obtained by subtracting the call start time from the call end time of the latest terminal device TE1 is calculated. Then, let the talk time be D. The control unit 10 refers to the cancellation condition definition table in which the range of the talk time D and the predetermined period PD are associated with each other, and determines the predetermined period PD corresponding to the talk time D. Then, the control unit 10 refers to the transmission time table ST1 and detects a record of the predetermined period PD or less for which the difference Y is determined. Other processing is the same as that of the fourth embodiment. As in the first modification of the third embodiment, the PD may be set for a predetermined period according to the talk time of a plurality of past calls.

(Embodiment 5)
Next, the fifth embodiment will be described. In the fourth embodiment, when the terminal device receives a call, the unlocking state (and the display of the IP wireless communication application) is controlled based on the elapsed time from the latest outgoing time to the reception of the call. Was explained. In the present embodiment, the lock state is released based on the response history from the destination terminal device instead of the elapsed time. The terminal device 1 according to the present embodiment replaces the outgoing time table ST1 of the fourth embodiment with the outgoing time table ST2 in which the outgoing time of the past call and the presence / absence of a reply call to the call are associated with the outgoing destination information of the call. Is recorded in the call history DB 162. The control unit 10 refers to the call history DB 162, and releases the locked state when there is a continuous call that has not been answered more than a predetermined number of times in a call within a predetermined period corresponding to the source terminal device of the call received this time. .. Other configurations are the same as those in the fourth embodiment.

<Outgoing time table configuration>
FIG. 13 shows a configuration example of the transmission time table ST2 stored in the terminal device 1 according to the present embodiment. In the present embodiment, for example, the terminal device TE7 has a transmission time table ST2-1 to ST2-6 for calls made to other terminal devices TE1 to TE6. FIG. 13 shows an example of the transmission time table ST2-1 of the call transmitted to the terminal device TE1. The transmission time tables ST2-2 to ST2-6 of the terminal devices TE2 to TE6 have the same configuration as the transmission time table ST2-1.

As shown in FIG. 13, the transmission time table ST2 is recorded for each terminal device 1 of the transmission destination, and in addition to the transmission start time and transmission end time similar to the transmission time table ST1 of the fourth embodiment, a response is further provided. The presence or absence is recorded. That is, the outgoing call time table ST2 shows the outgoing call start time at which the outgoing call to the outgoing call is started, the outgoing call end time at the end of the call, and the reception of the reply call from the outgoing call to the call. Record the presence or absence of. In FIG. 13, "○" in the return status answer column indicates that the call was answered from the destination terminal device within a predetermined time (for example, 1 minute), that is, the reply call was received. , "X" indicates that the call was not answered from the destination terminal device within a predetermined time, that is, the reply call was not received.

Explaining the recording method of the outgoing time table ST2, first, when a call is made to another terminal device 1, the control unit 10 of the terminal device 1 identifies the called destination terminal device MD and corresponds to the called destination terminal device MD. The outgoing timetable ST2 to be used is specified. Here, the specified transmission time table is referred to as ST2A. Further, the control unit 10 acquires the current time CT from the time measuring unit 15, and adds the start time to the specified transmission time table ST2A. Further, when the call to the destination terminal device MD ends, the control unit 10 acquires the current time CT from the timekeeping unit 15 and adds the end time to the transmission time table ST2 corresponding to the destination terminal device MD.

Further, the control unit 10 monitors whether or not a call is received (answered) from the destination terminal device MD of the call for a predetermined time from the end time of the call. For example, the same reception history as in the first embodiment may be recorded in the call history DB 162, and after a predetermined period has elapsed from the end time of the call, the reception history may be referred to to determine whether or not reception is within the predetermined period. good. When there is a reception from the destination terminal device MD within the specified period, "○" is added to the response status of the corresponding record in the transmission time table ST2, and there is no reception from the destination terminal device MD within the specified period. , Add "x" to the response status of the corresponding record in the outgoing time table ST2.

<Processing of terminal device>
Next, the processing at the time of receiving a call of the terminal device 1 according to the present embodiment will be described. The flowchart of FIG. 14 shows a process executed by the control unit 10 of the terminal device 1. Since S600 to S640 and S660 to S670 are the same as S100 to S140 and S160 to S170 in FIG. 6, detailed description thereof will be omitted.

As shown in FIG. 14, the control unit 10 of the terminal device 1 receives a call from another terminal device 1 when the terminal device 1 is in the locked state in S600, as in the first and fourth embodiments (S600: Yes). ), When the lock operation setting value is "1" (S610: Yes), the process proceeds to S620. In S620, the control unit 10 identifies the source terminal device MS of the received call, as in the first embodiment. Next, in S630, the control unit 10 identifies the transmission time table ST2A corresponding to the source terminal device MS identified in S620 from the transmission time tables ST2-1 to ST2-6 of the storage unit 16. Further, the control unit 10 acquires the current time CT from the time measuring unit 15 in S640.

Next, the control unit 10 refers to the record in the specified outgoing time table ST2A, and has not answered more than a predetermined number of times in succession in the calls within the predetermined period among the past calls transmitted to the calling terminal device MS. Determine if there is a call. In the present embodiment, a predetermined period serving as a determination criterion for releasing the locked state is defined as PE, and a predetermined number of times is defined as PF. The predetermined period PE is, for example, 5 minutes, and the predetermined number of times PF is, for example, 3 times. Specifically, in S650, the control unit 10 refers to the record of the transmission time table ST2A of the source terminal device MS specified in S630, and responds to the record of the transmission time table ST2A within the predetermined period PE. It is determined whether or not no call is continued for a predetermined number of times by PF or more.

The control unit 10 releases the locked state in S660 when the number of unanswered calls within the PE for a predetermined period of time is PF or more consecutively (S650: Yes) in the reception time table RT2A. Further, when the call that has not been answered within the PE for a predetermined period does not continue for a predetermined number of times or more (S650: No) following S660 or in the outgoing time table ST2A, the control unit 10 receives the voice of the call in S670. Information is output from the audio output unit 14. In addition, the processing is not limited to the above-mentioned processing, and another processing may be performed. For example, the lock state may be released when the source terminal device MS has not responded to the communication transmitted from the own terminal device more than a predetermined number of times without using the PE for a predetermined period.

<Effect of Embodiment 5>
As described above, in the present embodiment, in the terminal device, the transmission time table including the response history is recorded for each destination terminal device, and there is a call in which no response is made for a predetermined number of times or more in succession within the PE for a predetermined period. When a call is received from the destination terminal device, the locked state is released regardless of the lock operation mode setting. For example, when a call is received from the destination terminal device in a situation where there is no response from the destination terminal device that makes a frequent call, the destination terminal device requires an answer to the call, which is an important conversation or complicated. There is a possibility of conversation. In addition, when a call is received from the destination terminal device in a situation where the radio wave environment of the destination terminal device is poor and a reply cannot be made, the call may be disconnected and a reply may be required immediately. In such a case, by releasing the locked state, it is possible to make a quick call without complicated operations as in the fourth embodiment.

(Modification 1 of Embodiment 5)
In the fifth embodiment, the predetermined period PE and the predetermined number of times PF are set to constant values (fixed values), but as a modification 1 of the fifth embodiment, the predetermined period PE and the predetermined number of times PF are the same as in the third embodiment. May be set. That is, as in the fifth embodiment, when a call is received from the destination terminal device in which there is a call that has not been answered more than a predetermined number of times in a row within the PE for a predetermined period, this predetermined state is released in the process of releasing the locked state. The period PE and the predetermined number of times PF may be set according to the talk time of the previous call. For example, as the talk time of the previous call or the past call becomes longer, the PE may be set longer for a predetermined period and the PF may be set less for a predetermined number of times.

(Other embodiments)
The present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit. In the above embodiment, the case where the locked operation mode of the terminal device is the setting A and the setting B has been described, but the present invention is not limited to this. The above embodiment can be applied as long as it is a terminal device in which the locked state is maintained at least at the time of reception. Further, in the above embodiment, an example of a terminal device that performs half-duplex communication including a push-to-talk method via IP wireless communication has been described, but a terminal device that performs full-duplex communication and IP wireless communication The above embodiment may be applied to a terminal device having a communication method other than the above.

Further, in each of the above-described embodiments, the description has been made with reference to an example in which the terminal devices communicate with each other, but the present invention is not limited to this. Specifically, the present invention can also be applied to a message exchange system, a mail system, or the like in which terminal devices exchange text messages and images.

For example, when the terminal device receives a message from another terminal device in the locked state, a first operation mode is prepared in which the reception of the message is notified but the content of the message itself (text) is not displayed. For example, the locked screen displays "a message has been received" or outputs a notification sound, but does not display the information of the terminal device (user) of the sender or the message. That is, the operation in which the terminal device cannot be operated and the received communication information (message content) is not output is set as the first operation mode. By using such a first operation mode, the risk of leakage of communication contents can be reduced.

On the other hand, when the terminal device receives a message from another terminal device in the locked state, the locked state is released so that the user can immediately input and send a response message, and a message exchange application (communication application). Is started, and a second operation mode for displaying a received message is prepared. That is, the operation of outputting the received communication information (contents of the message) while the terminal device can be operated is set as the second operation mode. Then, the first communication mode is made to correspond to the setting A in each of the above-described embodiments, and the second communication mode is made to correspond to the setting B in each of the above-described embodiments. Control may be performed to select the first operation mode and the second operation mode depending on whether or not a predetermined condition relating to the history is satisfied.

In addition, as the second operation mode, even if the information of the terminal device (user) of the sender and the outline of the message (the first part of the message, etc.) are displayed on the screen of the locked state without releasing the locked state. good. That is, although the terminal device cannot be operated, the second operation mode may be a state in which the contents of the received communication are output to some extent. In this case, in the first operation mode and the second operation mode, the locked state is the same (both are not released), but the communication information output method is changed. That is, the terminal device does not determine whether or not to release the lock information, but determines whether or not to output the communication information. Therefore, the user can easily determine whether or not the message requires an immediate response while suppressing the risk that the terminal device is illegally operated by a third party.

Furthermore, the operation of displaying the information of the terminal device (user) of the sender and the outline of the message (the first part of the message, etc.) on the screen of the locked state without releasing the locked state is set as the first operation mode. , The operation of releasing the locked state, starting the message exchange application (communication application), and displaying the received message may be set as the second operation mode. In this case, although the terminal device cannot be operated, the operation of outputting the received communication contents to some extent is set as the first operation mode, and the terminal device can be operated and the received communication contents are output. The operation to be performed is set as the second operation mode.

That is, the difference between the first operation mode and the second operation mode, or the setting A and the setting B is not absolute but relative. The first operation mode (for example, setting A) may have a higher degree of security of communication information (communication content) than the second operation mode (for example, setting). On the contrary, the second operation mode may be more convenient for the user than the first operation mode. Here, the high convenience of the user means that the user can quickly grasp the communication content or the user can quickly respond to the communication.

Further, the operation modes that can be selected by the terminal device are not limited to two types, and may be three or more types. For example, as an operation when the terminal device receives a voice call, an operation in which the call voice is not output unless the locked state is released is set as the first operation mode, and an operation in which the call voice is output without releasing the locked state (each of the above-mentioned operations). The operation (corresponding to the setting A in each of the above-described embodiments) is set as the second operation mode, the locked state is released, the call voice is output, and the operation screen is also displayed (corresponding to the setting in each of the above-described embodiments) as the third operation. It may be a mode. Further, for example, as an operation when the terminal device receives a text or image message, the operation in which the sender user or the content of the message is not output at all unless the locked state is released is set as the first operation mode, and the locked state is not released. The operation of outputting at least a part of the information of the source user and the message may be set as the second operation mode, and the operation of releasing the locked state and outputting the information of the source user and the message may be set as the third operation mode.

In general, ensuring the security of terminal devices and communication information and the convenience of users are in conflict with each other. For this reason, security is ensured by preparing multiple types of operation modes with different degrees of security assurance (degree) and user convenience (degree), and selecting the operation mode based on the communication history information. Appropriate control can be easily performed in consideration of both the user's convenience and the user's convenience.

Each device in the above-described embodiment is composed of hardware and / or software, and may be composed of one hardware or software, or may be composed of a plurality of hardware or software. Each function (each process) of the drive recorder may be realized by a computer having a CPU, a memory, or the like. For example, a program for performing the control method in the embodiment may be stored in the storage unit, and each function may be realized by executing the program stored in the storage unit on the CPU.

This program can be stored and supplied to a computer using various types of non-transitory computer readable medium. Non-transient computer-readable media include various types of tangible storage media. Examples of non-temporary computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs. It includes a CD-R / W and a semiconductor memory (for example, a mask ROM, a PROM (Programmable ROM), an EPROM (Erasable PROM), a flash ROM, and a RAM (Random Access Memory)). The program may also be supplied to the computer by various types of transient computer readable medium. Examples of temporary computer-readable media include electrical, optical, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

1 Terminal device 10 Control unit 11 Display unit 12 Input unit 13 Communication unit 14 Voice output unit 15 Timekeeping unit 16 Storage unit 100 Wireless communication system 161 Locked operation setting value 162 Call history DB
BS base station D1 display screen D10 IP wireless call screen D11 user selection unit D12 PTT button unit DT cancellation condition definition table NW mobile phone network RT1, RT2 reception time table ST1, ST2 transmission time table SV management device TE, TE1 to TE7 terminal device

Claims (10)

A storage unit that stores communication history information, which is the history of past communications,
The receiver that receives the communication and
When the communication is received in the locked state that invalidates the user operation, it is determined whether or not to release the locked state based on the communication history information, and whether or not to output the received communication information. A control unit that makes at least one of the judgments of
A terminal device. The communication history information includes information associating the reception time of the past communication with the source information.
The control unit refers to the communication history information, and the elapsed time from the reception time of the previous communication corresponding to the source information of the communication received this time to the reception time of the communication received this time is shorter than a predetermined time. In this case, at least one of the unlocking state and the output of the received communication information is performed.
The terminal device according to claim 1. The control unit sets the predetermined time according to the communication time of the past communication including the previous communication.
The terminal device according to claim 2. The communication history information includes information associating the communication time of the past communication with the source information.
The control unit refers to the communication history information, and when the communication time of the previous communication corresponding to the source information of the communication received this time is longer than a predetermined time, the lock state is released and the received communication is released. Do at least one of the output of information,
The terminal device according to claim 1. The communication history information includes information relating to the source information and the presence / absence of response communication from the own terminal device to the communication in relation to the past communication.
The control unit refers to the communication history information, and when the own terminal device has not responded to the source information of the communication received this time more than a predetermined number of times, the lock state is released and the received communication is released. Do at least one of the output of information,
The terminal device according to claim 1. The communication history information includes a transmission time from the own terminal device with respect to the past communication.
The control unit refers to the communication history information, and when the elapsed time from the transmission time of the previous communication to the reception time of the communication received this time is shorter than a predetermined time, the lock state is released and the reception is received. Output communication information, at least one of them,
The terminal device according to claim 1. The communication history information includes information relating to the destination information of the communication transmitted from the own terminal device and the presence / absence of the response communication from the destination to the communication in relation to the past communication.
The control unit refers to the communication history information, identifies the destination information that matches the source of the communication received this time, and there is a communication that does not respond more than a predetermined number of times in response to the specified destination information. In this case, at least one of the unlocking of the locked state and the output of the received communication information is performed.
The terminal device according to claim 1. The control unit releases the locked state in a period from the start time of the received communication to the time when a predetermined time elapses from the end time of the communication.
The terminal device according to any one of claims 1 to 7. Stores communication history information, which is the history of past communication,
Receive communication,
When the communication is received in the locked state that invalidates the user operation, it is determined whether or not to release the locked state based on the communication history information, and whether or not to output the received communication information. Make at least one of the judgments of
How to control the terminal device. Stores communication history information, which is the history of past communication,
Receive communication,
When the communication is received in the locked state that invalidates the user operation, it is determined whether or not to release the locked state based on the communication history information, and whether or not to output the received communication information. Make at least one of the judgments of
A program that lets a computer perform processing.

Images