JP2012050119A - Communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify a user of progress of a handover without forcing the user to gaze at a screen.SOLUTION: A communication device comprises: a first communication section having a first communicable range; a second communication section having a second communicable range; a notification section for notifying a user; and a control section, when determining that communication with other communication device via the second communication section is available based on the response signal which is received by the first communication section in response to a request signal thereof requesting commencement of the communication sent to the other communication device through the second communication section, causing the second communication section to send an authentication request to the other communication device. Further, the request signal is sent in response to a handover start operation by the user, and the notification section notifies the user after the first communication section receives the response signal to the request signal thereof but before the second communication section receives an authentication response.

Description

  The present disclosure relates to a communication device.

  In recent years, wireless communication functions have been implemented in many electronic devices, and various wireless communication standards have been established accordingly. Representative examples of personal wireless technology include, for example, wireless LAN and Bluetooth (registered trademark) (hereinafter referred to as BT). These wireless technologies are used in multifunctional electronic products such as personal computers (hereinafter referred to as PCs), mobile phones, electronic notebooks (hereinafter referred to as PDAs), and small embedded devices such as digital cameras and printers. Hereinafter, a device equipped with a wireless communication function is referred to as a wireless device.

  While these wireless devices are widely spread and used in many situations, user convenience is improved, while security damage such as unauthorized intrusion into wireless devices and leakage of personal information becomes a problem, and security in wireless devices It is strongly desired to strengthen

  Under such circumstances, many methods for strengthening security are provided. On the other hand, for general users who have no specialized knowledge, it is a heavy burden to make appropriate security settings according to the devices. Therefore, as one method for realizing wireless device security settings with simple operation, after automatically exchanging setting information required for authentication between devices using a communication method with a narrow communication range, A mechanism called handover has been proposed that switches to a communication method with a wide communication range.

  For example, in the following Patent Document 1, a communication protocol information that can be used by another communication device is exchanged by a first communication unit, and the communication is switched to a second communication unit by using the exchanged protocol information. The mechanism is disclosed. Patent Document 2 below discloses a communication system that improves security by performing handover after encrypting and exchanging a session key generated using a random number. Patent Document 3 below discloses a technique in which protocol information is exchanged between three or more devices that support different communication methods, and communication is performed while switching to an optimal communication method.

JP 2004-364145 A JP 2006-14076 A JP 2007-74598 A

  However, the handover specifications that have been proposed so far have not stipulated means for notifying the user of the status of switching from the first communication means to the second communication means. For example, if the device that performs the handover is a terminal device provided with a display screen, the status of the handover may be displayed on the display screen. However, some devices do not have a display screen. In addition, when the processing of the handover becomes long in the future, such as when the processing of the handover becomes complicated or when it is desired to realize a high level of security, it is convenient if the user has to keep watching the screen. Damaged.

  Therefore, it is desirable to provide a communication device that can notify the progress of handover without causing the user to watch the screen.

  According to the present disclosure, from the first communication unit having the first communicable range, the second communication unit having the second communicable range, the notification unit that notifies the user, and the first communication unit, After transmitting a request signal for requesting the start of communication via the second communication unit to another communication device, and after the first communication unit receives a response signal to the request signal, the other signal is transmitted based on the response signal. A control unit that transmits an authentication request from the second communication unit to the other communication device when it is determined that communication with the communication device via the second communication unit is possible, The request signal is transmitted in response to a handover start operation by a user, and the notification unit receives an authentication response from the second communication unit after the response signal to the request signal is received by the first communication unit. Notify the user before Apparatus is provided.

  Moreover, according to this indication, from the 1st communication part which has a 1st communicable range, the 2nd communication part which has a 2nd communicable range, the alerting | reporting part which alert | reports to a user, and another communication apparatus An authentication unit that authenticates communication via the second communication unit with the other communication device based on a received authentication request and outputs an authentication response; and the first communication unit includes the second communication unit. After receiving a request signal for requesting the start of communication via the other communication device, a response signal to the request signal is transmitted from the first communication unit to the other communication device, and the second communication unit A control unit that transmits the authentication response from the second communication unit to the other communication device after receiving the authentication request from another communication device, and the request signal is in response to a handover start operation by a user. And the notification unit is configured to transmit the first communication unit. After being more received the request signal, before said output is said authentication response by the authentication unit is transmitted from the second communication unit, it performs a notification to the user, the communication device is provided.

  According to the technology according to the present disclosure, it is possible to notify the progress of handover without causing the user to watch the screen.

1 is a schematic diagram showing an outline of a communication system 1 according to an embodiment. It is a block diagram which shows the hardware constitutions of the 1st communication apparatus and 2nd communication apparatus which concern on one Embodiment. It is a block diagram which shows the logical structure of the 1st communication apparatus which concerns on one Embodiment. It is a block diagram which shows the logical structure of the 2nd communication apparatus which concerns on one Embodiment. It is a sequence diagram which shows an example of the flow of a hand-over process, and an alerting | reporting process. It is a sequence diagram which shows the other example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process. It is a sequence diagram which shows another example of alerting | reporting process.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

Further, the “best mode for carrying out the invention” will be described in the following sections [1] to [3].
[1] Overview of communication system [2] Basic configuration example of communication device [3] Example of handover process flow and notification process

[1] Overview of Communication System First, an overview of a communication system 1 according to an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a schematic diagram schematically showing a communication system 1 according to an embodiment of the present invention. Referring to FIG. 1, the communication system 1 includes a first communication device 100 and a second communication device 200.

  In FIG. 1, a mobile phone terminal is shown as the first communication device 100 and a video display device is shown as the second communication device 200, but the first communication device 100 and the second communication device 200 are not limited to such examples. . For example, the first communication device 100 or the second communication device 200 may be an information processing device such as a PC, PDA, audio playback device, or digital camera, or a wireless communication module connected to these devices. Good.

  As shown in FIG. 1, the first communication device 100 and the second communication device 200 can communicate with each other by two types of communication methods, a first communication method and a second communication method. The first communication method is typically realized as a proximity communication method for communicating over a very short distance of about 10 cm, for example. As the first communication method, for example, a non-contact communication method according to NFC (Near Field Communication) standard can be used.

  On the other hand, the second communication method is a communication method capable of communicating in a wider range than the first communication method. The second communication method is typically realized as a relatively high-speed communication method having a wider bandwidth than the first communication method. As the second communication method, for example, a communication method such as a wireless LAN or BT can be used.

  When a handover is performed in the communication system 1 illustrated in FIG. 1, communication between the first communication device 100 and the second communication device 200 is first performed using the first communication method via the second communication method. Configuration information is exchanged. The exchange of the setting information is performed, for example, by transmitting a request signal for requesting start of handover and receiving a response signal for the request signal.

  Thereafter, when the exchange of the setting information is completed, authentication is performed between the first communication device 100 and the second communication device 200 using the second communication method. When the authentication using the second communication method is successful, the handover is finally completed, and provision of an application service between the first communication device 100 and the second communication device 200 is started.

  At this time, for example, there may be a case where a certain period of time is required from a request for handover to completion depending on the case where authentication processing with a high processing cost is involved in order to realize high security, or depending on the situation of the communication environment. In addition, as a factor that may cause the handover to fail, a communication error, connection refusal by the user, or the like can be considered. Therefore, as described in detail below, the first communication device 100 and the second communication device 200 according to the present embodiment notify the user of various progress states such as success or failure of the handover or during the trial. Provide a mechanism.

[2] Basic Configuration Example of Communication Device Next, an example of the basic configuration of the first communication device 100 and the second communication device 200 will be described with reference to FIGS.

  FIG. 2 is an explanatory diagram illustrating an example of a hardware configuration of the first communication device 100 according to an embodiment of the present invention. Referring to FIG. 2, the first communication device 100 includes a first communication circuit 50, a second communication circuit 56, an MPU (Micro Processing Unit) 60, a RAM (Random Access Memory) 62, a ROM (Read Only Memory) 64, A recording medium 66, an input / output interface 70, an input device 72, and a notification device 76 are provided. These components are connected to each other by a bus 68 as a data transmission path.

  The first communication circuit 50 is a device provided for the first communication device 100 to perform communication using the first communication method. For example, when the NFC method is used as the first communication method, the first communication circuit 50 amplifies a resonance circuit having a predetermined inductance and capacitance, a demodulation circuit that demodulates a signal received by the resonance circuit, and a carrier wave. A transmission circuit for transmitting from the resonance circuit. Instead, the first communication circuit 50 may be, for example, an infrared port according to an IrDA (Infrared Data Association) standard.

  The second communication circuit 56 is a device provided for the first communication device 100 to perform communication using the second communication method. The second communication circuit 56 may be, for example, a BT port according to a standard specification according to IEEE 802.15.1, a wireless LAN port according to a standard specification according to IEEE 802.11a, b, g, n, or the like. The first communication device 100 may be provided with a plurality of second communication circuits 56 according to different types of communication methods.

  The MPU 60 functions as a control unit that controls the entire first communication apparatus 100. The RAM 62 temporarily stores, for example, programs executed by the MPU 60 and data. Further, the ROM 64 stores control data such as a program used by the MPU 60 and calculation parameters, for example.

  The recording medium 66 includes, for example, a magnetic recording medium such as a hard disk, a nonvolatile memory such as a flash memory, and the like, data such as setting information, authentication information, and application information of the first communication device 100, various programs, and the like. Remember.

  For example, the input / output interface 70 connects the bus 68 to the input device 72, the display device 74, and the notification device 76. As the input / output interface 70, for example, a USB (Universal Serial Bus) terminal, a DVI (Digital Visual Interface) terminal, or the like can be used.

  The input device 72 includes, for example, a button, a direction key, a joystick, a keyboard, a mouse, and the like, and receives an operation from the user. The display device 74 includes, for example, a CRT (Cathode Ray Tube), a liquid crystal display, an organic EL (Electro-Luminescence) display, and the like, and displays information to the user.

  The notification device 76 may be any device that sends signals to the user's sensory organs. For example, if LED (Light Emitting Diode) is used, it can alert | report with respect to a user's vision by a blink pattern, a display color, etc. For example, if a speaker, a bell, etc. are used, it can alert | report to a user's hearing by a sound pattern, a musical scale, a rhythm, etc. Further, if a vibrator using an eccentric motor or the like is used, it is possible to notify the user's tactile sensation based on the vibration pattern and the strength of vibration.

  Up to this point, the hardware configuration of the first communication device 100 according to an embodiment has been described with reference to FIG. In the present embodiment, the hardware of the second communication device 200 is also configured as shown in FIG.

  Next, FIG. 3 is a block diagram showing a logical configuration of the first communication device 100 in the present embodiment.

  Referring to FIG. 3, the first communication device 100 includes a first communication unit 110, a second communication unit 120, a display unit 130, an operation unit 140, a control unit 150, a storage unit 160, an application unit 170, and a notification unit 180. Is provided.

  The first communication unit 110 mediates communication using the first communication method with the second communication device 200 using the first communication circuit 50 described with reference to FIG. In the present embodiment, the first communication unit 110 of the first communication device 100 requests a start signal (request message) for requesting the start of communication via the second communication unit described later in response to an instruction from the control unit 150. Is transmitted to the second communication device 200. That is, in the present embodiment, the first communication device 100 is a terminal that requests a handover. Thereafter, after receiving a response signal (select message) returned from the second communication device 200 in response to the request signal, communication via the second communication unit 120 is started.

  The second communication unit 120 mediates communication using the second communication method with the second communication device 200 using the second communication circuit 56 described with reference to FIG. As described above, for example, the BT method or the wireless LAN method is used as the second communication method. When communication using the second communication method is started by the second communication unit 120, predetermined authentication is performed with the communication partner.

  The display unit 130 displays, for example, text information and image information output from the control unit 150 to the user using the display device 74 described with reference to FIG. The operation unit 140 generates an input signal corresponding to each operation when the user performs an operation such as start of handover or connection approval on the input device 72 described with reference to FIG. Output.

  The control unit 150 is connected to the first communication unit 110, the second communication unit 120, the display unit 130, the operation unit 140, the storage unit 160, the application unit 170, and the notification unit 180, and controls the function of each component. The control unit 150 is mainly configured by the MPU 60, the RAM 62, and the ROM 64 described with reference to FIG.

  For example, when receiving an input signal indicating that the start of handover has been instructed from the operation unit 140, the control unit 150 transmits a request signal requesting handover from the first communication unit 110. And the control part 150 will receive between the 2nd communication apparatuses 200 based on the setting information etc. which are contained in the received response signal, if the response signal with respect to the transmitted request signal is received from the 2nd communication apparatus 200, for example. It is determined whether communication via the second communication unit 120 is possible.

  Here, the setting information included in the response signal includes, for example, address information for the second communication method, information on a supported authentication method, information on an application included in each device, and the like. Therefore, the control unit 150 can use the setting information to use, for example, the authentication method supported by the second communication device 200, or, for example, the second communication device 200 has an application shared with the own device. It can be confirmed whether or not. In addition, when the response signal includes connection enable / disable information, the control unit 150 can determine whether or not the connection is permitted using the connection enable / disable information.

  When the control unit 150 determines that communication with the second communication device 200 via the second communication unit 120 is possible, the control unit 150 further transmits the second communication device 200 from the second communication unit 120. Send authentication information to. Here, the authentication information transmitted from the second communication unit 120 includes, for example, a public key and a certificate in a public key cryptosystem adopted in the BT and wireless LAN standards. As a result, the second communication device 200 can start communication in which security is ensured through authentication of communication with the first communication device 100.

  The storage unit 160 uses the recording medium 66 described with reference to FIG. 2, for example, for a program executed by the control unit 150 or the application unit 170, or for communication via the first communication unit 110 or the second communication unit 120. Data such as necessary setting information is stored.

  Similar to the control unit 150, the application unit 170 is mainly configured by the MPU 60, the RAM 62, and the ROM 64 described with reference to FIG. The application unit 170 provides a user with any application service that utilizes a communication function between the first communication device 100 and the second communication device 200. Among these, services that require data exchange exceeding a certain capacity, such as a data sharing service such as image data and music data, and a data backup service, undergo a handover process to be described later and pass through the second communication unit 120 through the second communication unit 120. This is done using a communication method.

  The notification unit 180 includes the notification device 76 described with reference to FIG. For example, based on an instruction from the control unit 150, the notification unit 180 notifies the user of a progress status such as success or failure of a handover with the second communication device 200, or during a trial. Here, the notification unit 180 may use a plurality of different notification patterns depending on the progress of the handover process.

  For example, when the notification device 76 is a light emitting device such as an LED, the notification pattern is, for example, a lighting color, a light amount, and a blinking interval. In the case of a vibration device, it is identified by the strength or interval of vibration.

  Note that the flow of a series of handover processing and notification processing performed under the control of the control unit 150 will be described in more detail in the next section.

  Next, FIG. 4 is a block diagram showing a logical configuration of the second communication device 200 in the present embodiment.

  Referring to FIG. 4, the second communication device 200 includes a first communication unit 210, a second communication unit 220, a display unit 230, an operation unit 240, a control unit 250, a storage unit 260, an application unit 270, a notification unit 280, And an authentication unit 290. Here, the first communication unit 110, the second communication unit 120, the display unit 130, the operation unit 140, the storage unit 160, the application unit 170, and the notification related to the first communication device 100 described with reference to FIG. The description of the same function as the unit 180 is omitted.

  The first communication unit 210 of the second communication device 200 mediates communication with the first communication device 100 according to the first communication method described above. In the present embodiment, the first communication unit 210 of the second communication device 200 receives a request signal that is transmitted from the first communication device 100 and requests the start of communication via the second communication unit. Then, the first communication unit 210 transmits a response signal to the first communication device 100 in response to an instruction from the control unit 250. That is, in the present embodiment, the second communication device 200 is a terminal that responds to a handover request.

  On the other hand, the second communication unit 220 of the second communication device 200 uses the second communication circuit 50 to mediate communication with the first communication device 100 according to the second communication method described above.

  When the request signal transmitted from the first communication device 100 is received by the first communication unit 210, the control unit 250 stores setting information such as address information for the second communication method described above, for example. Obtained from the unit 260. Then, the control unit 250 causes the first communication unit 210 to transmit a response signal including the acquired setting information to the first communication device 100.

  After that, when the authentication information for communication authentication by the second communication method transmitted from the first communication device 100 is received by the second communication unit 220, the control unit 250 sends the authentication information to the authentication unit 290. Hand it over and request authentication. Then, according to the authentication result by the authentication unit 290, the control unit 250 causes the second communication unit 220 to transmit the authentication result to the first communication device 100.

  Here, in this embodiment, authentication by the authentication unit 290 can be performed according to an arbitrary authentication method in addition to standard specifications such as EAP-TLS (EAP-Transport Layer Security) and PEAP (Protected EAP).

  In the present embodiment, an example is described in which authentication is requested from the first communication apparatus 100 to the second communication apparatus 200 at the time of handover. However, instead, the second communication device 200 may request authentication from the first communication device 100. In that case, a function equivalent to that of the authentication unit 290 is additionally provided in the logical configuration of the first communication device 100 shown in FIG.

  Up to this point, an example of the hardware configuration and the logical configuration of the first communication device 100 and the second communication device 200 has been described with reference to FIGS. Next, an example of a flow of handover processing and notification processing performed between the first communication device 100 and the second communication device 200 with this configuration will be described.

[3] Flow of Handover Processing and Example of Notification Processing [3-1] Typical Flow FIG. 5 is an example of the flow of handover processing performed between the first communication device 100 and the second communication device 200. FIG.

  In the example of FIG. 5, the handover process is started when the user performs a predetermined operation on the first communication device 100 (S302). For example, the first communication device 100 may start the handover process when a predetermined button of the operation unit 140 is pressed.

  Next, the control unit 150 of the first communication device 100 transmits a request signal for requesting the start of communication by the second communication method, that is, a handover, from the first communication unit 110 to the second communication device 200 (S304). ). Here, the communicable range (first communicable range) by the first communication unit 110 is within a close distance range of about 10 cm, for example, in the case of the NFC method. Therefore, for example, the display unit 130 of the first communication device 100 displays a screen that prompts the user to bring the first communication device 100 closer to the second communication device 200 ("touch"). Accordingly, the user causes the first communication device 100 to touch the second communication device 200, and the handover request signal transmitted from the first communication unit 110 reaches the second communication device 200.

  The handover request signal that has reached the second communication device 200 is received by the first communication unit 210 of the second communication device 200. Then, the control unit 250 of the second communication device 200 sends a response signal including setting information for authentication of communication by the second communication method from the first communication unit 210 as a response to the received request signal. 1 is transmitted to the first communication apparatus 100 (S306).

  When the first communication device 100 receives the response signal transmitted from the second communication device 200, the control unit 150 of the first communication device 100 notifies the user from the notification unit 180 that the touch has been successful. Inform (H1). Thereby, the user recognizes that the first communication device 100 may be separated from the second communication device 200. Such notification is not limited to notification by sound as shown in FIG. For example, notification may be performed by blinking of an LED, vibration of a vibrator, or the like. Further, the notification pattern may be changed according to the type of application to be connected.

  Note that the sequence of handover request and response in S304 and S306 is not limited to the case of ending in one round trip as shown in FIG. When S304 and S306 are repeated a plurality of times, for example, the time when the communication completion command in the first communication method is finally transmitted and received can be determined as the time when the touch is successful.

  Thereafter, in the second communication device 200, for example, an operation for permitting a handover is performed by the user (S308). For example, a screen for confirming whether or not handover can be performed may be displayed on the display unit 230 of the second communication apparatus 200 and a user's permission or rejection operation may be received via the operation unit 240. If the setting for automatically permitting the handover is made in advance, S308 may be omitted, and the subsequent processing may be automatically advanced without confirming whether or not the handover is possible.

  On the other hand, after S306, the control unit 150 of the first communication device 100 causes the second communication unit 120 to transmit authentication information for authentication of communication using the second communication method. Typically, after S306, the authentication information is repeatedly transmitted from the second communication unit 120 until an authentication result is returned from the second communication device 200 or until a certain time elapses and time-out occurs. (S310). In the meantime, for example, on the display unit 130 of the first communication device 100, a “connecting” screen indicating that authentication is currently being attempted in the second communication method is displayed.

  Thereafter, in the second communication device 200 that is permitted to be handed over by the user, when the second communication unit 220 receives the authentication information, the control unit 250 requests the authentication unit 290 to authenticate using the received authentication information (S312). ). And the control part 250 transmits the authentication result by the authentication part 290 to the 1st communication apparatus 100 from the 2nd communication part 220 (S314).

  When the first communication device 100 receives an authentication result as a response to the authentication request from the second communication device 200, the control unit 150 of the first communication device 100 notifies that the authentication has been performed. The user is notified from 180 (H2). Thereby, the user can recognize that the handover has succeeded or failed.

  After that, between the first communication device 100 and the second communication device 200, for example, basic information that is not specific to an application is exchanged using the second communication method (S316). Here, the basic information includes, for example, profile information of a user who uses each device.

  In addition, after the basic information is exchanged, detailed information specific to the application is exchanged between the second communication units 120 and 220 (S318). Here, based on the detailed information of the exchanged application, the control unit 150 of the first communication device 100 or the control unit 250 of the second communication device 200 further determines whether or not the application can be started. Also good.

  Then, after the exchange of the detailed information of the application, provision of an application service using the second communication method is started in a communication environment in which security is ensured (S320).

[3-2] Modified Example In FIG. 5, the flow of the handover process and the typical notification process have been described. However, in this embodiment, various notification processes with different contents or different timing from those in FIG. 5 can be realized. Hereinafter, modified examples of the notification process will be described with reference to FIGS.

  In FIG. 6, the transmission of the handover request signal from the first communication unit 110 of the first communication device 100 is started (S304) and the response signal is returned from the second communication device 200 (S306). The notification is continuously performed (H3). Such notification that continues for a certain period of time can be performed, for example, by repeated sounding or repeated lighting or blinking of LEDs. Thereby, the user recognizes that the touch needs to be continued while the notification is being given.

  In FIG. 7, when the response signal is returned from the second communication device 200, the control unit 150 determines that communication with the second communication device 200 cannot be started based on the response signal (S307). In addition, a notification indicating a handover failure is performed (H4). For example, when the functions of the first communication device 100 and the second communication device 200 are not compatible, or when the response signal includes connection availability information indicating rejection of handover, it can be determined that the handover has failed. . Examples of incompatible functions include the lack of a corresponding application, a version defect, and missing required devices and control profiles. The cause of such a handover failure may be notified to the user by dividing the notification pattern. Accordingly, the user can recognize the success or failure of the handover and the cause of the failure in the case of the failure without continuing to watch the display unit 130, for example.

  In FIG. 8, after transmission of a handover request signal from the first communication unit 110 is started (S304), a request is issued when there is no response from the second communication device 200 even after a predetermined period has elapsed. A notification indicating failure due to timeout is provided (H5). In such a case, the notification may be made in such a manner that the type of handover failure can be identified by a different notification pattern from the notification (H4) indicating handover failure in FIG. In addition, as described above, when S304 and S306 are repeated a plurality of times, for example, when a communication completion command is not confirmed even after a predetermined period of time, a notification indicating a timeout similar to H5 may be performed. Good.

  In FIG. 9, after the handover request (S304) and response (S306), when the user performs an operation for permitting or rejecting the handover (S308), the handover is permitted or rejected. A notification indicating that this has been done is performed (H6). Such notification is performed, for example, by giving an instruction to the notification unit 280 from the control unit 250 of the second communication device 200. Further, the notification may be performed by changing the notification pattern depending on whether the handover is permitted or rejected.

  In FIG. 10, when the control unit 150 determines that the authentication has failed when the authentication result of the communication using the second communication method is returned from the second communication device 200 (S315), the notification indicating the authentication failure is performed. (H7).

  In FIG. 11, after the authentication request from the second communication unit 120 is transmitted (S310), the authentication is timed out when the authentication result is not returned from the second communication device 200 even after a predetermined period has elapsed. The notification indicating failure has been performed (H8). In such a case, notification may be performed in a form that can identify the type of authentication failure by a notification pattern different from the notification (H7) indicating authentication failure in FIG. Thereby, the user can recognize not only the success or failure of the authentication but also the cause of the authentication failure.

  Further, instead of S310, when there is no response from the communication partner for a predetermined period after the execution of each step such as S314, S316, and S318 shown in FIG.

  In FIG. 12, when basic information is exchanged between the first communication device 100 and the second communication device 200 (S316), and when detailed application information is exchanged, it is found that the function incompatibility of the application is found. (S319), notification is performed (H9).

  FIG. 13 shows an example in which the progress status of the handover process shown in FIG. 5 is notified whenever the status changes. In the example of FIG. 13, at the time of a handover start operation (S302, H11), a handover request (S304, H12), a handover response (S306, H13), an authentication request (S310, H14), an authentication response (S314, H15) ), Basic information exchange (S316, H16), application detailed information exchange (S318, H17), and application start (S320, H18).

  Further, as described in connection with the description of the second communication circuit 56 illustrated in FIG. 2, a plurality of types of second communication methods are used between the first communication device 100 and the second communication device 200. Sometimes you get. In such a case, as shown in FIG. 14, the second communication apparatus 200 that has received the handover request signal from the first communication apparatus 100 causes the user to select the second communication method to be handed over from a plurality of candidates. It is possible. In FIG. 14, as an example, two options of communication method A and communication method B are shown on the screen. For example, in FIG. 14, the communication method A may be a BT method, the communication method B may be a Wi-Fi method, or the like.

  In the example of FIG. 14, the response signal returned from the second communication device 200 includes information designating the communication method selected by the user (S306). The first communication device 100 that has received such a response signal, for example, designates the designated communication method such as H21 when the BT method is designated and H22 when the Wi-Fi method is designated. Different notifications may be made depending on the situation.

  Note that FIG. 14 shows an example in which the user selects the second communication method, but instead, the first communication device 100 or the second communication device 200 uses the priority set in advance. The second communication method may be automatically selected.

  Further, in near field communication such as NFC used as the first communication method, a device serving as a reader / writer outputs a carrier wave to capture a communication partner. In the present embodiment, the second communication device 200 serves as a reader / writer. The output of the carrier wave may be triggered by an operation from the user or may be constantly output. Therefore, the notification unit 280 may notify whether the second communication device 200 is outputting a carrier wave.

  In FIG. 15, the output of the carrier wave is started from the first communication unit 210 of the second communication apparatus 200 in response to the user's operation to start the output of the carrier wave (S <b> 303), while the carrier wave is being output. Notification has been performed (H31). Accordingly, the user can recognize when the first communication device 100 should be touched to the second communication device 200.

  Up to here, the flow of the handover process and the example of the notification process according to the embodiment of the present invention have been described with reference to FIGS. In each drawing excluding FIG. 9 and FIG. 15, an example in which notification is performed using the notification unit 180 of the first communication device 100 is shown. However, you may alert | report using the alerting | reporting part 280 of the 2nd communication apparatus 200 at the alerting | reporting timing shown to each figure. It is also possible to make a notification using both the first communication device 100 and the second communication device 200. However, in order to avoid user confusion, it is preferable that notification related to the handover process is performed while maintaining a sense of unity, for example, notification is performed only by one device on the requesting side.

  According to the present embodiment, it is possible to make the user recognize the progress status of the handover as appropriate without causing the user to watch the screen. Further, the progress of handover can be expressed even in a communication apparatus that does not have a display screen. As a result, the convenience of secure and seamless communication utilizing handover is improved, and the use of near field communication and near field communication in more various scenes is expected.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

DESCRIPTION OF SYMBOLS 1 Communication system 100 1st communication apparatus (request side communication apparatus)
200 Second communication device (response side communication device)
110, 210 First communication unit 120, 220 Second communication unit 130, 230 Display unit 140, 240 Operation unit 150, 250 Control unit 160, 260 Storage unit 170, 270 Application unit 180, 280 Notification unit 290 Authentication unit

Claims (8)

A first communication unit having a first communicable range;
A second communication unit having a second communicable range;
An informing unit for informing a user;
A request signal for requesting the start of communication via the second communication unit is transmitted from the first communication unit to another communication device,
When the first communication unit receives a response signal to the request signal and then determines that communication with the other communication device via the second communication unit is possible based on the response signal. A control unit that transmits an authentication request from the second communication unit to the other communication device;
With
The request signal is transmitted in response to a handover start operation by a user,
The notification unit notifies the user after receiving the response signal to the request signal by the first communication unit and before receiving an authentication response by the second communication unit.
Communication device.   The communication device according to claim 1, wherein the notification unit notifies a user via an audio output device.   The display unit further includes a display unit that displays a first screen in response to the handover start operation and displays a second screen after the response signal to the request signal is received by the first communication unit. Or the communication apparatus of Claim 2.   The communication device according to claim 1, wherein the first communication unit performs communication according to a proximity communication method. A first communication unit having a first communicable range;
A second communication unit having a second communicable range;
An informing unit for informing a user;
An authentication unit that authenticates communication with the other communication device via the second communication unit based on an authentication request received from the other communication device and outputs an authentication response;
The first communication unit receives a request signal for requesting the start of communication via the second communication unit from the other communication device, and then responds to the request signal from the first communication unit to the other communication device. Send a signal,
A control unit that transmits the authentication response from the second communication unit to the other communication device after the second communication unit receives the authentication request from the other communication device;
With
The request signal is transmitted in response to a handover start operation by a user,
The notification unit notifies the user after the request signal is received by the first communication unit and before the authentication response output by the authentication unit is transmitted from the second communication unit.
Communication device.   The communication device according to claim 5, wherein the notification unit notifies a user via an audio output device.   The display device according to claim 5 or 6, further comprising: a display unit that displays a first screen after the response signal is transmitted from the first communication unit and displays a second screen in response to a handover permission operation. The communication device described. The communication device according to claim 5, wherein the first communication unit performs communication according to a proximity communication method.

Images