JP6662478B2 - Communication device and mobile terminal - Google Patents

Description

  The technology disclosed in the present specification relates to a communication device and a mobile terminal for performing communication of target data.

  Patent Literature 1 discloses a system including a first wireless communication device, a second wireless communication device, and a terminal device. The first wireless communication device is connected to a terminal device via a wireless LAN. The first wireless communication device performs data communication with the second wireless communication device by NFC. In this case, the first wireless communication device transmits participation information for participating in the wireless LAN to the second wireless communication device by NFC. When the terminal device is an access point, the participation information includes communication standard information of the access point, ESS-ID, MAC address, security information, and the like. The second wireless communication device participates in the wireless LAN using the participation information. The first and second wireless communication devices execute data communication by wireless LAN via a terminal device serving as an access point.

JP 2010-245748 A

  According to the technique of Patent Document 1, if the second wireless communication device joins the wireless LAN using the participation information, the first and second wireless communication devices can execute data communication via the terminal device. It is a premise. However, such data communication may not be performed properly. The present specification discloses a technology that enables a communication device and a mobile terminal to appropriately execute target data communication.

  One technique disclosed in the present specification is a communication device for performing communication between a mobile terminal and target data. The communication device is a first type interface for performing wireless communication with the mobile terminal, and a second type interface for performing wireless communication with the mobile terminal, and is a wireless communication via the second type interface. Has a second type interface, which is faster than the communication speed of wireless communication via the first type interface, and a device-side control unit. The device-side control unit includes a specific data receiving unit, a first information transmitting unit, a forming unit, a second information transmitting unit, and a device-side communication executing unit. The specific data receiving unit receives the specific data from the mobile terminal via the first type interface. The first information transmitting unit, when the specific data is received, when the communication device belongs to the first wireless network in a first case, the mobile terminal performs wireless communication using the first wireless network. The first information to be executed is transmitted to the mobile terminal via the first type of interface. The first wireless network is a wireless network for executing wireless communication via a second type of interface. The forming unit, when the specific data is received, newly establishes the third wireless network when the communication device does not belong to the first wireless network but belongs to the second wireless network. Formed. Each of the second wireless network and the third wireless network is a wireless network for executing wireless communication via a second type interface. The second information transmitting unit, in the second case, uses the second information for the mobile terminal to execute the wireless communication using the second wireless network and the second information for the mobile terminal using the third wireless network. And transmitting the third information for executing the wireless communication to the portable terminal via the first type interface. The device-side communication execution unit executes communication of the target data with the mobile terminal using the first wireless network in the first case, and executes the second wireless network or the third wireless communication in the second case. The mobile terminal communicates with the target data using the network.

  According to the above configuration, the communication device transmits the first information to the mobile terminal in the first case where the communication device belongs to the first wireless network. For this reason, the communication device and the portable terminal can appropriately execute the communication of the target data using the first wireless network. Also, the communication device newly forms a third wireless network in a second case where the communication device does not belong to the first wireless network but belongs to the second wireless network, and transmits the second information and the second information. 3 is transmitted to the mobile terminal. For this reason, the communication device and the mobile terminal can appropriately execute the communication of the target data using the second wireless network or the third wireless network. Even if the communication device and the mobile terminal cannot execute the communication of the target data using the second wireless network, the communication device and the mobile terminal can use the third wireless network formed by the communication device. , The communication of the target data can be appropriately executed.

  In one technology disclosed in the present specification, the device-side control unit of the communication device may include a specific data receiving unit, a determining unit, an information transmitting unit, and a device-side communication execution unit. The specific data receiving unit receives the specific data from the mobile terminal via the first type interface. The specific data includes identification information for identifying a wireless network to which the mobile terminal belongs. When the communication device belongs to the fifth wireless network when the specific data is received, the determination unit uses the identification information to determine whether the mobile terminal belongs to the fifth wireless network. to decide. The fifth wireless network is a wireless network in which the communication device operates as a slave station to execute wireless communication via the second type interface. The information transmitting unit is configured to execute fifth information for causing the mobile terminal to perform wireless communication using the fifth wireless network when the mobile terminal is determined to belong to the fifth wireless network. And sixth information for the mobile terminal to execute wireless communication using the sixth wireless network to the mobile terminal via the first type interface, and the mobile terminal transmits the fifth wireless In the fourth case where it is determined that the mobile terminal does not belong to the network, the sixth information is transmitted to the portable terminal via the first type interface without transmitting the fifth information. The sixth wireless network is a wireless network in which the communication device operates as a master station and executes wireless communication via the second type interface. The device-side communication execution unit executes communication of the target data with the portable terminal using the fifth wireless network or the sixth wireless network in the third case, and performs the sixth wireless communication in the fourth case. The mobile terminal communicates with the target data using the network.

  According to the configuration described above, the communication device determines the fifth information and the sixth information when the mobile terminal is determined to belong to the fifth wireless network in which the communication device operates as a slave station. To the mobile terminal. For this reason, the communication device and the portable terminal can appropriately execute the communication of the target data using the fifth wireless network or the sixth wireless network. Even if the communication device and the mobile terminal cannot execute the communication of the target data using the fifth wireless network, the communication device and the mobile terminal may operate in the sixth mode in which the communication device operates as a master station. The communication of the target data can be appropriately performed using the wireless network. Further, in the fourth case where it is determined that the mobile terminal does not belong to the fifth wireless network in which the communication device operates as a slave station, the communication device transmits the sixth information without transmitting the fifth information. To your mobile device. For this reason, the communication device and the mobile terminal can appropriately execute the communication of the target data using the sixth wireless network. In addition, the security of the fifth wireless network can be prevented from lowering.

  One technique disclosed in the present specification is a mobile terminal for performing communication between a communication device and target data. The mobile terminal is a first type interface for executing wireless communication with the communication device, and a second type interface for executing wireless communication with the communication device, and is a wireless communication via the second type interface. Is provided with a second type interface and a terminal side control unit, which are faster than the communication speed of wireless communication via the first type interface. The terminal-side control unit includes a specific data transmission unit, an information reception unit, and a terminal-side communication execution unit. The specific data transmission unit transmits the specific data to the communication device via the first type interface. The information receiving unit receives, after the specific data has been transmitted, specific information for the mobile terminal to execute wireless communication using the wireless network from the communication device via the first type interface. The terminal-side communication execution unit includes the specific information, which includes one piece of information for the mobile terminal to perform wireless communication using one wireless network, and includes another wireless network different from the one wireless network. If no other information for performing wireless communication is used, the communication between the communication device and the target data is performed using one wireless network, and the specific information is one information and another information. When a plurality of pieces of information including the above information are included, the communication of the target data is performed with the communication device by sequentially using each of the plurality of wireless networks including one wireless network and another wireless network. . Each of the plurality of wireless networks is a wireless network for executing wireless communication via the second type interface.

  According to the above configuration, when the specific information includes one piece of information, the mobile terminal uses one wireless network to perform communication between the communication device and the target data. For this reason, the mobile terminal and the communication device can appropriately execute the communication of the target data using the one wireless network. Further, when the specific information includes a plurality of pieces of information, the mobile terminal sequentially uses each of the plurality of wireless networks to execute communication between the communication device and the target data. Even if the mobile terminal and the communication device cannot execute the communication of the target data using any one of the plurality of wireless networks, the mobile terminal and the communication device The communication of the target data may be appropriately performed using another of the wireless networks.

  A control method for realizing the above communication device, a computer program, and a computer-readable recording medium storing the computer program are also novel and useful. Further, a control method, a computer program, and a computer-readable recording medium for storing the computer program for realizing the above-described portable terminal are also novel and useful. Further, a communication system including the above communication device and a portable terminal is also new and useful.

1 shows a configuration of a communication system. 4 shows a flowchart of a communication process of the MFP. 4 shows a flowchart of a response transmission process of the MFP. 4 shows a flowchart of an application process of the mobile terminal. The sequence diagram of case A is shown. The sequence diagram of case B is shown. FIG. 4 shows a sequence diagram of case C. The sequence diagram of case D is shown. 9 shows a flowchart of a response transmission process according to the second embodiment.

(First embodiment)
(Configuration of Communication System 2)
As shown in FIG. 1, the communication system 2 includes a plurality of access points (hereinafter, referred to as “AP (Access Point)”) 4 a and 4 b and a personal computer (hereinafter, “PC (Personal Computer)”). ) "), A multi-function device (hereinafter referred to as" MFP (Multi-Function Peripheral) ") 10 and a portable terminal 50.

(Types of Wireless Communication Executable by MFP 10)
The MFP 10 executes wireless communication according to NFC (Near Field Communication), wireless communication according to WFD (Wi-Fi Direct), and wireless communication according to normal Wi-Fi. It is possible. Hereinafter, the wireless communication according to each of the above methods will be referred to as “NFC communication”, “WFD communication”, and “normal Wi-Fi communication”, respectively.

(NFC communication)
The NFC system is a wireless communication system for so-called short-range wireless communication, and is, for example, a wireless communication system based on the international standard of ISO / IEC 21481 or 18092. The MFP 10 can execute NFC communication with the portable terminal 50.

(WFD communication)
The WFD system is a wireless communication system described in a standard document “Wi-Fi Peer-to-Peer (P2P) Technical Specification Version 1.1” created by Wi-Fi Alliance. The WFD scheme is based on, for example, a wireless standard in accordance with the 802.11 standard of IEEE (abbreviation of the Institute of Electrical and Electronics Engineers, Inc.) and standards conforming thereto (eg, 802.11a, 11b, 11g, 11n, etc.). This is a wireless communication method for executing communication.

  Since the MFP 10 belongs to the WFD network, the MFP 10 can execute WFD communication of the target data with another device belonging to the WFD network. The target data is data including information on the network layer of the OSI reference model, and includes, for example, print data, scan data, and the like. The mobile terminal 50 and the PC 6 can also execute WFD communication of the target data by belonging to the WFD network.

  Hereinafter, devices that can execute WFD communication, such as the MFP 10 and the portable terminal 50, are referred to as “WFD-compatible devices”. In the above-mentioned WFD standard, three states of a Group Owner state (hereinafter, referred to as a “G / O state”), a client state, and a device state are defined as states of the WFD-compatible device. The WFD-compatible device can be selectively operated in one of the above three states.

  When a pair of WFD-compatible devices in a device state is to form a WFD network, wireless communication called G / O negotiation is usually performed between the pair of WFD-compatible devices. In the G / O negotiation, it is determined that one of the pair of WFD-compatible devices is in the G / O state and the other of the pair of WFD-compatible devices is in the client state. A WFD network is formed by devices in the G / O state (hereinafter, referred to as “G / O devices”) and devices in the client state (hereinafter, referred to as “CL devices”). In a WFD network, there may be one G / O device and one or more CL devices. The G / O device manages one or more CL devices. Specifically, the G / O device executes authentication of the CL device for each of the one or more CL devices, and when the authentication of the CL device succeeds, the identification information of the CL device (ie, the MAC address). ) Is described in the management list in the memory of the G / O device. When the CL device leaves the WFD network, the G / O device deletes the identification information of the CL device from the management list.

  The G / O device can directly execute wireless communication of the target data with the CL device registered in the management list without using a relay device. However, the G / O device can execute wireless communication of participation data for the unregistered device to participate in the WFD network with an unregistered device that is not registered in the management list. Unable to perform wireless communication. The participation data is data that does not include information on the network layer of the OSI reference model, such as a Probe Request signal (hereinafter, referred to as a “PReq signal”) and a Probe Response signal (hereinafter, referred to as a “PRes signal”). Includes physical layer data. Note that the G / O device can relay wireless communication of target data between a plurality of CL devices.

  A WFD-compatible device that does not belong to the WFD network (that is, an unregistered device that is not registered in the G / O device management list) is a device in a device state. The device in the device state can execute the wireless communication of the participation data for belonging to the WFD network with the G / O device, but executes the wireless communication of the target data with the G / O device or the CL device. Impossible.

  As described above, in a WFD network, a pair of WFD-compatible devices can execute WFD communication of target data without using an AP configured separately from these WFD-compatible devices. That is, it can be said that WFD communication is wireless communication that does not involve an AP.

  In the following, it is not possible to selectively operate in one of the three states (ie, G / O state, client state, and device state) defined in the WFD standard, A device that can execute wireless communication via the AP (that is, normal Wi-Fi communication described later) is referred to as a “non-WFD-compatible device”. “WFD non-compliant device” is also called “legacy device”. The device in the G / O state can describe the identification information of the WFD-incompatible device in the management list. In this case, the WFD-incompatible device can participate in the WFD network as a CL device.

(Normal Wi-Fi communication)
The normal Wi-Fi system is a wireless communication system defined by the Wi-Fi Alliance, and is a wireless communication system different from the WFD system. Similar to the WFD system, the normal Wi-Fi system performs wireless communication for executing wireless communication in accordance with the IEEE 802.11 standard and standards conforming thereto (eg, 802.11a, 11b, 11g, 11n, etc.). Communication method. However, as described above, the WFD scheme is a wireless communication scheme for executing wireless communication without using an AP. On the other hand, the normal Wi-Fi system is a wireless communication system for executing wireless communication via an AP. In this respect, the WFD system is different from the normal Wi-Fi system.

  By belonging to the normal Wi-Fi network, the MFP 10 can execute normal Wi-Fi communication of the target data with another device belonging to the normal Wi-Fi network via the AP. The mobile terminal 50 can also execute normal Wi-Fi communication of the target data by belonging to the normal Wi-Fi network. Therefore, the MFP 10 can execute the normal Wi-Fi communication of the target data with the mobile terminal 50 via any one of the plurality of APs 4a and 4b.

  Normally, a Wi-Fi network is a wireless network constructed in an environment where an AP can be installed, such as an in-house LAN or a home LAN. . On the other hand, a WFD network is a wireless network constructed to execute temporary wireless communication between a pair of WFD-compatible devices, for example, in order to eliminate the need for an AP. It is a wireless network to be formed temporarily. As described above, in the present embodiment, it is assumed that the normal Wi-Fi network is a wireless network to be constantly formed and the WFD network is a wireless network to be temporarily formed. In the following, the WFD network and the normal Wi-Fi network are referred to as “WFDNW” and “normal Wi-FiNW”.

(Configuration of MFP 10)
The MFP 10 can execute multiple functions including a print function and a scan function. As shown in FIG. 1, the MFP 10 includes an operation unit 12, a display unit 14, a print execution unit 16, a scan execution unit 18, and a wireless LAN interface (hereinafter, the interface is referred to as “I / F”). ) 20, an NFC I / F 22, and a control unit 30. Each of the units 12 to 30 is connected to a bus line (reference numerals are omitted).

  The operation unit 12 includes a plurality of keys. The user can input various instructions to the MFP 10 by operating the operation unit 12. The display unit 14 is a display for displaying various information. The printing unit 16 is a printing mechanism of an ink jet system, a laser system, or the like. The scan execution unit 18 is a scan mechanism such as a CCD and a CIS.

  The wireless LAN I / F 20 is an interface for executing WFD communication and normal Wi-Fi communication. The wireless LAN I / F 20 is physically one interface (that is, one IC chip). However, the wireless LAN I / F 20 includes a MAC address used in WFD communication (hereinafter, referred to as a “MAC address for WFD”) and a MAC address used in normal Wi-Fi communication (hereinafter, “normal Wi-Fi”). MAC address "). More specifically, a normal Wi-Fi MAC address is assigned to the wireless LAN I / F 20 in advance. The control unit 30 uses the normal Wi-Fi MAC address to generate a WFD MAC address different from the normal Wi-Fi MAC address, and allocates the WFD MAC address to the wireless LAN I / F 20. Therefore, the control unit 30 can simultaneously execute both the normal Wi-Fi communication using the normal Wi-Fi MAC address and the WFD communication using the WFD MAC address. That is, the MFP 10 can simultaneously belong to both the WFDNW and the normal Wi-Fi NW.

  From the viewpoint of the MAC address used by the MFP 10, the WFD communication and the normal Wi-Fi communication can be expressed as follows, for example. That is, the WFD communication is wireless communication using the MAC address of the MFP 10 for WFD, and the normal Wi-Fi communication is wireless communication using the normal MAC address of the MFP 10 for Wi-Fi. The WFDNW is a wireless network using the MAC address of the MFP 10 for WFD, and the normal Wi-Fi NW is a wireless network using the MAC address of the MFP 10 for normal Wi-Fi.

  The NFC I / F 22 is an interface for executing NFC communication. The chip configuring the NFC I / F 22 and the chip configuring the wireless LAN I / F 20 are physically different.

  The communication speed of the wireless communication via the wireless LAN I / F 20 (for example, the maximum communication speed is 11 to 600 Mbps) is higher than the communication speed of the wireless communication via the NFC I / F 22 (for example, the maximum communication speed is 100 to 424 Kbps). Is also fast. Further, the frequency of the carrier wave (for example, 2.4 GHz band, 5.0 GHz band) in the wireless communication via the wireless LAN I / F 20 is the frequency of the carrier wave (for example, 13.56 MHz band) in the wireless communication via the NFC I / F 22. And different. Further, for example, when the distance between MFP 10 and portable terminal 50 is about 10 cm or less, control unit 30 can execute NFC communication with portable terminal 50 via NFC I / F 22. On the other hand, regardless of whether the distance between the MFP 10 and the portable terminal 50 is 10 cm or less or 10 cm or more (for example, about 100 m at the maximum), the control unit 30 controls the portable device via the wireless LAN I / F 20. The terminal 50 can execute WFD communication and normal Wi-Fi communication. That is, the maximum distance at which the MFP 10 can execute wireless communication with the communication destination device (for example, the portable terminal 50) via the wireless LAN I / F 20 is determined by the MFP 10 executing wireless communication with the communication destination device via the NFC I / F 22. Greater than the maximum possible distance.

  The control unit 30 includes a CPU 32 and a memory 34. The CPU 32 executes various processes according to a program stored in the memory 34. The functions of the units 40 to 47 are realized by the CPU 32 executing the processing according to the program. The memory 34 includes a ROM, a RAM, a hard disk, and the like. The memory 34 stores the above program executed by the CPU 32.

  When the MFP 10 belongs to the WFDNW, the memory 34 further stores WFD affiliation information indicating that the MFP 10 belongs to the WFDNW. The WFD affiliation information includes a state value indicating a state (G / O state or client state) of the MFP 10 in the WFDNW, and a WFD wireless setting for executing WFD communication using the WFDNW.

  Note that the MFP 10 can be in a state where it belongs to the first WFDNW as a G / O device and belongs to the second WFDNW as a CL device. That is, the MFP 10 can simultaneously belong to two WFDNWs as devices in different states (ie, G / O state and client state). However, the MFP 10 cannot belong to two WFDNWs simultaneously as devices in the same state. That is, while the MFP 10 belongs to one WFDNW as a G / O device, it cannot belong to another WFDNW as a G / O device. Also, while the MFP 10 belongs to one WFDNW as a CL device, it cannot belong to another WFDNW as a CL device. When the MFP 10 simultaneously belongs to the first and second WFDNWs, the memory 34 stores the first WFD belonging information corresponding to the first WFDNW and the second WFD corresponding to the second WFDNW. Store both affiliation information.

  The WFD wireless setting includes authentication method information, encryption method information, SSID (Service Set Identifier), BSSID (Basic Service Set Identifier), and password. The SSID included in the WFD wireless setting is a network identifier for identifying the WFDNW. The BSSID included in the WFD wireless setting is a unique identifier (for example, the MAC address of the G / O device) assigned to the WFDNW G / O device.

  The G / O device usually prepares a WFD wireless setting when forming a WFDNW, and supplies the WFD wireless setting to the CL device. For example, the control unit 30 of the MFP 10 prepares WFD wireless settings when the MFP 10 forms a WFDNW that operates as a G / O device. Specifically, the control unit 30 prepares predetermined authentication method information and encryption method information. The control unit 30 prepares a predetermined password or prepares a password by newly generating a password. The control unit 30 prepares a predetermined SSID or prepares an SSID by newly generating an SSID. The control unit 30 prepares a predetermined MAC address for WFD as the BSSID.

  Therefore, when the MFP 10 belongs to the WFDNW as a G / O device, the WFD affiliation information corresponding to the WFDNW includes the WFD wireless settings prepared by the MFP 10 when the MFP 10 forms the WFDNW. On the other hand, when the MFP 10 belongs to the WFDNW as a CL device, the WFD affiliation information corresponding to the WFDNW is output by the G / O device when a G / O device different from the MFP 10 forms the WFDNW. The prepared WFD wireless settings (that is, the WFD wireless settings acquired from the G / O device) are included.

  When the MFP 10 belongs to the normal Wi-Fi NW, the memory 34 further stores normal Wi-Fi affiliation information indicating that the MFP 10 belongs to the normal Wi-Fi NW. The normal Wi-Fi affiliation information includes a normal Wi-Fi wireless setting for executing a normal Wi-Fi communication using the normal Wi-Fi NW. The normal Wi-Fi wireless setting usually includes authentication method information, encryption method information, SSID, BSSID, and password. The SSID included in the normal Wi-Fi wireless setting is a network identifier for identifying the normal Wi-Fi NW. The BSSID included in the normal Wi-Fi wireless setting is a unique identifier (for example, the MAC address of the AP) assigned to the AP forming the normal Wi-Fi NW.

  The MFP 10 normally participates in the normal Wi-Fi NW using the following method. That is, when a predetermined operation is applied to the operation unit 12, the control unit 30 of the MFP 10 executes an SSID search and transmits a PReq signal. As a result, the control unit 30 receives the PREs signal from each of the APs 4a and 4b existing around the MFP 10. The PREs signal includes authentication method information indicating the authentication method used by the AP that transmits the PREs signal, encryption method information indicating the encryption method used by the AP, and information used by the AP. SSID and BSSID. Next, the control unit 30 causes the display unit 14 to display the plurality of SSIDs obtained from the plurality of APs. The user selects one SSID (that is, one AP) from the plurality of SSIDs using the operation unit 12. The user further inputs a password using the operation unit 12.

  The control unit 30 uses the authentication method information, the encryption method information, the SSID, and the BSSID acquired from the selected AP, and wirelessly connects to the selected AP by using the password input by the user. Execute The wireless connection includes communication processing for the MFP 10 to participate in the normal Wi-Fi NW (for example, communication processing for authentication (communication of an Authentication signal, an Association signal, and the like)). Thus, the MFP 10 participates in the normal Wi-Fi NW formed by the selected AP. The memory 34 stores information (authentication method information and the like) used in wireless connection with the selected AP as normal Wi-Fi wireless settings.

(Configuration of the mobile terminal 50)
The portable terminal 50 is, for example, a portable terminal device such as a mobile phone (for example, a smartphone), a PDA, a notebook PC, a tablet PC, a portable music playback device, and a portable video playback device. The mobile terminal 50 can execute NFC communication, WFD communication, and normal Wi-Fi communication.

  The mobile terminal 50 includes an operation unit 52, a display unit 54, a wireless LAN I / F 60, an NFC I / F 62, and a control unit 70. Each of the units 52 to 70 is connected to a bus line (reference numerals are omitted). The operation unit 52 includes a plurality of keys. The user can input various instructions to the mobile terminal 50 by operating the operation unit 52. The display unit 54 is a display for displaying various information.

  The wireless LAN I / F 60 is an interface for executing WFD communication and normal Wi-Fi communication. The NFC I / F 62 is an interface for executing NFC communication. The difference between these interfaces 60 and 62 is similar to the difference between the interfaces 20 and 22 of the MFP 10. That is, for example, the communication speed of the wireless communication via the wireless LAN I / F 60 is higher than the communication speed of the wireless communication via the NFC I / F 62.

  The control unit 70 includes a CPU 72 and a memory 74. The CPU 72 executes various processes according to a program stored in the memory 74. The programs in the memory 74 include an application 76 for causing the MFP 10 to execute various functions (for example, a printing function, a scanning function, and the like). The application 76 may be installed in the mobile terminal 50 from, for example, a server provided by a vendor of the MFP 10 or may be installed in the mobile terminal 50 from media shipped with the MFP 10. The functions of the units 80 to 82 are realized by the CPU 72 executing the processing according to the application 76.

  Note that, unlike the MFP 10, the mobile terminal 50 cannot belong to the WFDNW and the normal Wi-Fi NW simultaneously. Also, the mobile terminal 50 cannot belong to two WFDNWs simultaneously. When the mobile terminal 50 belongs to the WFDNW or the normal Wi-Fi NW, the memory 34 stores the WFD affiliation information or the normal Wi-Fi affiliation information similarly to the MFP 10.

(Configuration of APs 4a and 4b)
Each of the APs 4a and 4b is not a WFD G / O device but a normal AP called a wireless access point or a wireless LAN router, and forms a normal Wi-Fi NW. Each of the APs 4a and 4b receives target data from a first device (for example, the mobile terminal 50) among a plurality of devices belonging to the normal Wi-Fi NW, and a second device among the plurality of devices. (For example, the MFP 10). That is, each of the APs 4a and 4b can execute a relay function of relaying wireless communication of target data between a pair of devices belonging to the normal Wi-Fi NW. Each of the APs 4a and 4b can execute a router function for relaying data communication between a device belonging to the normal Wi-Fi NW and the Internet.

  The differences between the WFD G / O device and the normal AP (that is, each AP 4a, 4b) are as follows. When a WFD G / O device leaves the WFDNW to which the device belongs and newly belongs to another WFDNW, it can operate in a state different from the G / O state (that is, a client state). On the other hand, the normal AP executes the relay function regardless of which normal Wi-Fi NW the AP forms. That is, the normal AP can only execute the same operation as the WFD G / O device, and cannot execute the same operation as the WFD CL device.

  Note that the administrator of the communication system 2 can select ON or OFF as the privacy separator setting (hereinafter, referred to as “PS (Privacy Separator) setting”) for each of the APs 4a and 4b. For example, when the PS setting of the AP 4a is OFF, the AP 4a can execute both the router function and the relay function. On the other hand, when the PS setting of the AP 4a is ON, the AP 4a can execute the router function but cannot execute the relay function. As described above, when the PS setting of the AP 4a is ON, data communication is not executed between a pair of devices belonging to the normal Wi-Fi NW formed by the AP 4a, so that the security of the normal Wi-Fi NW is improved. Can be.

(Communication processing executed by MFP 10)
Subsequently, the contents of the communication processing executed by the MFP 10 will be described with reference to FIG. While the power of the MFP 10 is turned on, the NFC I / F 22 of the MFP 10 emits a detection radio wave for detecting a device capable of executing the NFC communication (that is, the portable terminal 50). The user of the portable terminal 50 brings the portable terminal 50 closer to the MFP 10 after performing the operation of selecting the print function or the scan function. Thereby, the distance between portable terminal 50 and MFP 10 becomes smaller than the distance (for example, 10 cm) that radio waves reach each other. In this case, the NFC I / F 62 of the mobile terminal 50 receives the detection radio wave from the MFP 10 and transmits a response radio wave to the MFP 10. As a result, an NFC communication session is established between the MFP 10 and the portable terminal 50. The mobile terminal 50 transmits the request data to the MFP 10 using the NFC communication session.

  As shown in S10, the specific data receiving unit 40 of the MFP 10 monitors reception of request data from the mobile terminal 50 (S10). When receiving the request data from the mobile terminal 50 via the NFC I / F 22, the specific data receiving unit 40 determines YES in S10, and proceeds to S12. When the print function is selected by the user of the mobile terminal 50, the request data includes a print instruction. On the other hand, when the scan function is selected by the user of the mobile terminal 50, the request data includes a scan instruction. When the mobile terminal 50 belongs to the WFDNW or the normal Wi-Fi NW, the request data further includes the SSID of the wireless network to which the mobile terminal 50 belongs. When the mobile terminal 50 does not belong to any of the WFDNW and the normal Wi-Fi NW, the request data does not include the SSID.

(Response transmission processing; FIG. 3)
In S12, the control unit 30 executes a response transmission process. Hereinafter, the WFDNW in which the MFP 10 operates as a G / O device is described as “WFDNW (MFP = G / O)”. Further, the WFDNW in which the MFP 10 operates as a CL device is described as “WFDNW (MFP = CL)”.

  As shown in FIG. 3, in S30, control unit 30 determines whether or not MFP 10 belongs to the WFDNW (MFP = G / O). Specifically, when WFD affiliation information is not stored in memory 34, control unit 30 determines NO in S30 (that is, MFP 10 does not belong to WFDNW (MFP = G / O)). Then, the process proceeds to S40. Further, when two WFD affiliation information are stored in the memory 34, that is, the MFP 10 belongs to the first WFDNW (MFP = G / O) and the MFP 10 If the MFP 10 belongs to the WFDNW (MFP = CL), it is determined as YES in S30 (that is, the MFP 10 belongs to the WFDNW (MFP = G / O)), and the process proceeds to S32. When one WFD affiliation information is stored in the memory 34, the control unit 30 determines whether the state value included in the WFD affiliation information is a value indicating the G / O state. Confirm. When the state value is the value indicating the G / O state, the control unit 30 determines YES in S30 and proceeds to S32, and when the state value is the value indicating the client state, NO in S30. It proceeds to S40.

  In S32, the second determination unit 46 determines whether the request data received from the mobile terminal 50 in S10 of FIG. 2 includes the SSID of the wireless network to which the mobile terminal 50 belongs. If the request data includes the SSID, the second determination unit 46 determines YES in S32, and proceeds to S34. If the request data does not include the SSID, the second determination unit 46 determines NO in S32, and S60. Proceed to.

  In S34, the second determination unit 46 determines whether the MFP 10 belongs to the normal Wi-Fi NW. Specifically, if the normal Wi-Fi affiliation information is stored in the memory 34, the second determination unit 46 determines YES in S34 (that is, the MFP 10 belongs to the normal Wi-Fi NW). It proceeds to S36. When the normal Wi-Fi affiliation information is not stored in the memory 34, the second determination unit 46 determines NO in S34 (that is, the MFP 10 does not belong to the normal Wi-Fi NW), and proceeds to S60. Proceed to.

  In S36, the second determination unit 46 determines whether the MFP 10 and the portable terminal 50 belong to the same normal Wi-Fi NW. Specifically, the second determination unit 46 determines whether the SSID included in the normal Wi-Fi affiliation information in the memory 34 matches the SSID included in the request data. When determining that the two SSIDs match, the second determination unit 46 determines YES in S36 (that is, the MFP 10 and the mobile terminal 50 belong to the same normal Wi-Fi NW), and proceeds to S50. . On the other hand, when determining that the two SSIDs do not match, the second determination unit 46 determines NO in S36 (that is, the MFP 10 and the mobile terminal 50 do not belong to the same normal Wi-Fi NW). , S60.

  In S50, the first information transmitting unit 41 first generates response data. More specifically, the first information transmission unit 41 associates the normal Wi-Fi wireless setting included in the normal Wi-Fi belonging information in the memory 34 with the priority information indicating the first priority. First attached information is generated. Next, the first information transmitting unit 41 transmits the WFD affiliation information including the state value indicating the G / O state among the one or more WFD affiliation information in the memory 34 (hereinafter, “G / O WFD affiliation information”). ). Then, the first information transmitting unit 41 transmits the second correspondence information in which the WFD wireless setting included in the G / O WFD belonging information and the priority information indicating the second priority are associated with each other. Generate. The first information transmitting unit 41 generates response data including the first correspondence information and the second correspondence information. In S50, the first information transmitting unit 41 further transmits the generated response data to the mobile terminal 50 via the NFC I / F 22. In FIG. 3, the wireless setting, the first priority, and the second priority are described as “WS (abbreviation of Wireless Setting)”, “(1)”, and “(2)”, respectively. ing.

  As described above, in S50, the normal Wi-Fi wireless setting corresponding to the normal Wi-Fi NW to which the mobile terminal 50 belongs has the first priority. For this reason, the mobile terminal 50 preferentially uses the normal Wi-Fi NW in the application processing of FIG. 4 described later. At this time, since the mobile terminal 50 already belongs to the normal Wi-Fi NW, the mobile terminal 50 does not need to execute the connection process (S210 in FIG. 4) (YES in S208 in FIG. 4). Therefore, the processing load on the portable terminal 50 can be reduced.

  In S60 executed when S32, S34, or S36 is NO, the first information transmitting unit 41 specifies the G / O WFD affiliation information among the one or more WFD affiliation information in the memory 34. I do. Then, the first information transmitting unit 41 generates response data including the WFD wireless setting included in the G / O WFD belonging information. Unlike S50, in S60, the response data does not include the normal Wi-Fi wireless setting and priority information. In S60, the first information transmitting unit 41 further transmits the generated response data to the mobile terminal 50 via the NFC I / F 22.

  On the other hand, in S40, the first determination unit 45 determines whether the request data received from the mobile terminal 50 in S10 of FIG. 2 includes the SSID of the wireless network to which the mobile terminal 50 belongs. If the request data includes the SSID, the first determination unit 45 determines YES in S40 and proceeds to S42, and if the request data does not include the SSID, determines NO in S40 and S48. Proceed to.

  In S42, the first determination unit 45 determines whether the MFP 10 belongs to at least one of the normal Wi-Fi NW and the WFDNW (MFP = CL). More specifically, the first determination unit 45 includes at least the normal Wi-Fi affiliation information and the WFD affiliation information including a state value indicating the client state (hereinafter, referred to as “CL WFD affiliation information”). If one is stored in the memory 34, YES is determined in S42 (that is, the MFP 10 belongs to at least one of the normal Wi-Fi NW and the WFDNW (MFP = CL)), and the process proceeds to S44. move on. When neither the normal Wi-Fi affiliation information nor the CL WFD affiliation information is stored in the memory 34, the first determination unit 45 determines NO in S42 (that is, the MFP 10 determines that the normal Wi-Fi NW and the WFDNW (MFP = CL) and proceeds to S48.

  In S44, when the normal Wi-Fi affiliation information is stored in the memory 34, the first determination unit 45 determines whether the MFP 10 and the mobile terminal 50 belong to the same normal Wi-Fi NW. A first determination process is performed. The first determination process is the same as S36. If the first determination unit 45 determines that the MFP 10 and the portable terminal 50 belong to the same normal Wi-Fi NW in the first determination process, it determines YES in S44 and proceeds to S46.

  In S44, the first determination unit 45 further determines whether the MFP 10 and the portable terminal 50 belong to the same WFDNW (MFP = CL) when the CL WFD affiliation information is stored in the memory 34. A second determination process is performed to determine whether or not this is the case. Specifically, the first determination unit 45 determines whether or not the SSID included in the CL WFD affiliation information in the memory 34 matches the SSID included in the request data. The first determination unit 45 determines that the MFP 10 and the mobile terminal 50 belong to the same WFDNW (MFP = CL) when the two SSIDs match. If the first determination unit 45 determines that the MFP 10 and the portable terminal 50 belong to the same WFDNW (MFP = CL) in the second determination process, the first determination unit 45 determines YES in S44 and proceeds to S46. .

  On the other hand, the first determination unit 45 determines in the first determination process that the MFP 10 and the mobile terminal 50 do not belong to the same normal Wi-Fi NW, and in the second determination process, the MFP 10 and the mobile terminal 50 When it is determined that 50 does not belong to the same WFDNW (MFP = CL), NO is determined in S44, and the process proceeds to S48.

  In S46, forming unit 44 causes MFP 10 to transition to the autonomous G / O mode. As described above, when a new WFD network is to be formed, a G / O negotiation is usually performed to determine a G / O device and a CL device. On the other hand, in the autonomous G / O mode, it is determined that the MFP 10 is a G / O device without performing G / O negotiation. At the stage of S46, the MFP 10 is a G / O device, but no CL device exists. That is, by executing S46, the forming unit 44 forms a WFDNW (MFP = G / O) to which only the G / O device (that is, the MFP 10) belongs.

  The autonomous G / O mode is a mode in which the MFP 10 keeps operating in the G / O state. For example, when the MFP 10 is in the G / O state by G / O negotiation and forms a WFD network, when there is no CL device from the WFD network, the MFP 10 shifts from the G / O state to the device state (that is, the device state). , WFD network disappears). On the other hand, for example, when the MFP 10 is in the G / O state in the autonomous G / O mode to form the WFD network, the MFP 10 maintains the G / O state even without the CL device (ie, Maintain WFD network).

  When S46 is started, the MFP 10 may belong to the WFDNW (MFP = CL). In this case, in S46, the forming unit 44 newly forms a WFDNW (MFP = G / O) without removing the MFP 10 from the WFDNW (MFP = CL). That is, a state is formed in which the MFP 10 simultaneously belongs to two WFDNWs. This is the same in S48 described later.

  In S46, the forming unit 44 further prepares WFD wireless settings (that is, authentication method information, encryption method information, SSID, BSSID, and password) to be used in the WFDNW (MFP = G / O). The method for preparing the WFD wireless settings is as described above. In S46, the forming unit 44 further causes the memory 34 to store the G / O WFD affiliation information including the status value indicating the G / O status and the prepared WFD wireless settings. When S46 ends, the process proceeds to S70.

  In S70, first, the second information transmitting unit 42 generates response data. More specifically, the second information transmission unit 42 determines, from one or more affiliation information in the memory 34 (that is, normal Wi-Fi affiliation information, WFD affiliation information), both the MFP 10 and the portable terminal 50. Is assigned (hereinafter, referred to as “specific assignment information”) corresponding to the wireless network to which the user belongs (that is, the wireless network determined to be YES in S44). The specific affiliation information is normal Wi-Fi affiliation information or WFD affiliation information for CL. Then, the second information transmitting unit 42 determines the wireless setting (that is, the normal Wi-Fi wireless setting or the WFD wireless setting of WFDNW (MFP = CL)) included in the specific belonging information and the first priority And first priority information that is associated with the priority information indicating. Next, the second information transmitting unit 42 sets the WFD wireless setting included in the G / O WFD belonging information in the memory 34 (that is, the WFD wireless setting prepared in S46) and the priority indicating the second priority. And generating second association information in which the information and the information are associated with each other. The second information transmitting unit 42 generates response data including the first correspondence information and the second correspondence information. In S70, the second information transmitting unit 42 further transmits the generated response data to the mobile terminal 50 via the NFC I / F 22.

  As described above, in S70, the wireless setting corresponding to the wireless network to which the mobile terminal 50 belongs has the first priority. For this reason, the portable terminal 50 preferentially uses the wireless network in the application processing of FIG. 4 described below. At this time, since the mobile terminal 50 already belongs to the wireless network, the mobile terminal 50 does not need to execute the connection process (S210 in FIG. 4) (YES in S208 in FIG. 4). Therefore, the processing load on the portable terminal 50 can be reduced.

  On the other hand, in S48, forming section 44 shifts MFP 10 to the autonomous G / O mode. S48 is the same as S46. Next, in S60 executed after S48, the third information transmitting unit 43 includes the WFD wireless setting included in the G / O WFD belonging information in the memory 34 (that is, the WFD wireless setting prepared in S48). Generate response data. Unlike S70, in S60, the response data does not include the normal Wi-Fi wireless setting or the WFD wireless setting corresponding to the WFDNW (MFP = CL), and does not include the priority information. In S60 executed after S48, the third information transmitting unit 43 further transmits the generated response data to the mobile terminal 50 via the NFC I / F 22.

  As described above, even if the MFP 10 belongs to the normal Wi-Fi NW, if the mobile terminal 50 does not belong to the normal Wi-Fi NW (NO in S36 or NO in S44), the MFP 10 The normal Wi-Fi wireless setting corresponding to the Wi-Fi NW is not transmitted to the portable terminal 50 (S60). For this reason, it is possible to prevent the security of the normal Wi-Fi NW to which the MFP 10 belongs from being reduced. Similarly, even if the MFP 10 belongs to the WFDNW (MFP = CL), if the mobile terminal 50 does not belong to the WFDNW (MFP = CL) (NO in S44), the MFP 10 returns to the WFDNW (MFP = CL). ) Is not transmitted to the portable terminal 50 (S60). For this reason, it is possible to suppress a decrease in security of the WFDNW (MFP = CL) to which the MFP 10 belongs.

  On the other hand, in the WFDNW (MFP = G / O) to which the MFP 10 belongs, there is no problem even if the MFP 10 determines the security policy of the WFDNW. For this reason, in the present embodiment, even if the portable terminal 50 does not belong to the WFDNW (MFP = G / O), the MFP 10 sets the WFD wireless setting corresponding to the WFDNW (MFP = G / O). The data is transmitted to the portable terminal 50 (S50, S60, S70). Thus, as will be described in detail later, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the WFDNW (MFP = G / O).

(Process after S14 in FIG. 2)
When S50, S60, or S70 in FIG. 3 is executed, the response transmission processing in FIG. 3 ends. In this case, the process proceeds to S14 of FIG. Regardless of which of S50, S60, and S70 in FIG. 3 is executed, the WFD wireless setting corresponding to the WFDNW (MFP = G / O) is transmitted to the portable terminal 50. As will be described in detail later, when the mobile terminal 50 does not belong to the WFDNW (MFP = G / O), the mobile terminal 50 uses the WFD wireless setting to connect to participate in the WFDNW (MFP = G / O). A signal (for example, an Authentication Request signal and an Association Request signal) is transmitted to the MFP 10 (see S210 in FIG. 4). In S14, the control unit 30 monitors reception of a connection signal from the portable terminal 50 via the wireless LAN I / F 20. When receiving the connection signal from the portable terminal 50, the control unit 30 determines YES in S14 and proceeds to S16. In the case where S14 is NO, the process proceeds to S18.

  In S16, the control unit 30 transmits a connection response signal (for example, an Authentication Response signal, an Association Response signal), which is a response signal to the connection signal, to the portable terminal 50 via the wireless LAN I / F 20. As a result, the mobile terminal 50 can participate in the WFDNW (MFP = G / O). That is, the MFP 10 and the portable terminal 50 belong to the same WFDNW (MFP = G / O). When S16 ends, the process proceeds to S18.

  As will be described later in detail, the portable terminal 50 transmits a confirmation signal (for example, a ping signal) to the MFP 10 using the wireless network to which both the MFP 10 and the portable terminal 50 belong (see S212 in FIG. 4). . In S18, the communication execution unit 47 monitors reception of a confirmation signal from the portable terminal 50 via the wireless LAN I / F 20. When receiving the confirmation signal from the portable terminal 50, the communication execution unit 47 determines YES in S18, and proceeds to S20. In the case where S18 is NO, the process returns to S14.

In S20, the control unit 30 transmits an acknowledgment signal (for example, a PING Response signal), which is a response signal to the above acknowledgment signal, to the mobile terminal 50 via the wireless LAN I / F 20.
When S20 ends, the process proceeds to S22.

  Note that even if a confirmation signal is transmitted from the portable terminal 50 to the MFP 10 using a wireless network to which both the MFP 10 and the portable terminal 50 belong (hereinafter, referred to as “both belonging NW”), the MFP 10 transmits the confirmation signal. May not be able to receive. For example, in a situation where both the affiliated NWs are normal Wi-Fi NWs, if the PS setting of the AP forming the normal Wi-Fi NW is ON, the AP receives a confirmation signal from the mobile terminal 50. However, the confirmation signal is not transmitted to the MFP 10. Further, for example, in a situation where the both NWs are WFDNWs in which both the MFP 10 and the portable terminal 50 operate as CL devices (that is, WFDNW (MFP = CL, portable terminal = CL)), the WFDNW (MFP = CL, When the PS setting of the G / O device forming the portable terminal (CL) is ON, the G / O device transmits the confirmation signal to the MFP 10 even if the confirmation signal is received from the portable terminal 50. do not do. As described above, even if both NWs are used, there is a possibility that communication of the confirmation signal and the confirmation response signal cannot be executed. When such both-affiliated NWs are used, communication of target data (that is, print data or scan data) cannot be executed.

  On the other hand, when both the affiliated NWs are WFDNWs (MFP = G / O), the MFP 10 and the portable terminal 50 do not execute communication via the relay device (that is, the AP or the G / O device). And perform the communication directly. Therefore, an event that the data communication does not succeed due to the PS setting of the relay device being ON does not occur. In addition, even when both NWs are a normal Wi-Fi NW or a WFDNW (MFP = CL, mobile terminal = CL), if the PS setting of the relay device is OFF, communication of the confirmation signal and the confirmation response signal is performed. It is possible. When such a dual NW is used, communication of target data (that is, print data or scan data) can be executed.

  In view of such a situation, in S22, the communication execution unit 47 uses the wireless network (hereinafter, referred to as “specific wireless network”) in which the communication of the confirmation signal and the confirmation response signal has succeeded, and The communication of the target data is executed via F20. Thereby, the MFP 10 and the mobile terminal 50 can appropriately execute the communication of the target data. For example, in S22 executed via S50 in FIG. 3, the normal Wi-Fi NW or WFDNW (MFP = G / O) is the above specific wireless network. Further, for example, in S22 executed after S60 in FIG. 3, the WFDNW (MFP = G / O) is the above specific wireless network. Further, for example, in S22 executed after S70 in FIG. 3, the normal Wi-Fi NW, WFDNW (MFP = CL), or WFDNW (MFP = G / O) is the specific wireless network.

  For example, when the request data received in S10 includes a print instruction, in S22, the communication execution unit 47 uses the specific wireless network described above to transmit the request from the portable terminal 50 via the wireless LAN I / F 20. Receive print data. Next, the control unit 30 supplies the print data (that is, the target data) to the print execution unit 16. Thereby, the print execution unit 16 prints the image represented by the print data on the print medium. If the request data received in S10 includes a scan instruction, the control unit 30 activates the scan execution unit 18 in S22. As a result, the scan executing unit 18 scans the document and generates scan data. Next, the communication execution unit 47 transmits the scan data (that is, the target data) to the mobile terminal 50 via the wireless LAN I / F 20 using the specific wireless network. When S22 ends, the process returns to S10.

  The print data or scan data usually has a larger data size than each data (for example, request data, response data) communicated by NFC communication. As described above, the communication speed of the NFC communication is lower than the communication speed of the WFD communication or the normal Wi-Fi communication. Therefore, if a configuration is adopted in which wireless communication of target data is performed using NFC communication between the MFP 10 and the mobile terminal 50, a long time is required for wireless communication of target data. In view of such circumstances, in the present embodiment, the MFP 10 transmits response data for executing wireless communication of target data to the mobile terminal 50 by WFD communication or normal Wi-Fi communication. Thereby, the MFP 10 and the mobile terminal 50 can execute the WFD communication or the normal Wi-Fi communication of the target data, and as a result, can quickly execute the wireless communication of the target data.

(Application processing of portable terminal 50; FIG. 4)
Next, with reference to FIG. 4, a description will be given of the contents of processing executed by the control unit 70 of the mobile terminal 50 according to the application 76. When the user of the portable terminal 50 desires to cause the MFP 10 to execute the print function or the scan function, the user operates the operation unit 52 to activate the application 76. Accordingly, the control unit 70 starts the flowchart of FIG.

  The user operates the operation unit 52 to select a function (print function or scan function) to be executed by the MFP 10. When selecting a print function, the user further operates the operation unit 52 to select data to be printed (that is, print data) stored in the memory 74 of the mobile terminal 50. When the printing function or the scanning function is selected by the user, the control unit 70 determines YES in S200 and proceeds to S202.

  In S202, first, the specific data transmission unit 80 generates request data including an instruction (print instruction or scan instruction) corresponding to the selected function. When the normal Wi-Fi affiliation information or the WFD affiliation information is stored in the memory 74, the specific data transmission unit 80 identifies the SSID included in the affiliation information. Then, the specific data transmission unit 80 generates request data including the specified SSID. In S202, the specific data transmission unit 80 further monitors that an NFC communication session is established between the MFP 10 and the portable terminal 50. Specific data transmitting section 80 transmits the generated request data to MFP 10 via NFC I / F 62 when the NFC communication session is established. Thereby, the MFP 10 receives the request data (see S10 in FIG. 2).

  As described above, in S50, S60, or S70 of FIG. 3, the MFP 10 transmits the response data to the portable terminal 50. As a result, in S204, the information receiving unit 81 receives the response data from the MFP 10 via the NFC I / F 62.

  Next, in S206, the communication execution unit 82 specifies the wireless setting having the highest priority among the one or more wireless settings included in the response data received in S204. For example, if the response data includes a WFD wireless setting corresponding to the WFDNW (MFP = G / O) and does not include other wireless settings (see S60 in FIG. 3), the communication execution unit 82 sets the WFD wireless Identify settings. For example, when the response data includes two wireless settings (see S50 and S70 in FIG. 3), in the first S206, the communication execution unit 82 sets the priority information indicating the first priority. Identify the associated wireless settings. This wireless setting matches the wireless setting included in the affiliation information in the memory 74, that is, the wireless setting corresponding to the wireless network to which the mobile terminal 50 belongs. This is because in S50 or S70 in FIG. 3, the wireless setting corresponding to the wireless network to which both the MFP 10 and the portable terminal 50 belong is associated with the priority information indicating the first priority.

  Next, in S208, the communication execution unit 82 determines whether the mobile terminal 50 belongs to a wireless network corresponding to the wireless setting specified in S206 (hereinafter, referred to as a “target wireless network”). . More specifically, if the wireless setting specified in S206 matches the wireless setting included in the affiliation information in the memory 74, the communication execution unit 82 determines YES in S208 and proceeds to S210. Skip to step S212. On the other hand, if the wireless setting specified in S206 does not match the wireless setting included in the affiliation information in the memory 74, the communication execution unit 82 determines NO in S208 and proceeds to S210.

In S210, the communication execution unit 82 executes a connection process using the wireless setting specified in S206. More specifically, the communication execution unit 82 is a connection for connecting to a target relay device (for example, the MFP 4 operating as a G / O device or the like) that forms a target wireless network. Generate a signal. Next, the communication execution unit 82 transmits the connection signal to the target relay device via the wireless LAN I / F 60, and as a result, receives the connection response signal from the target relay device via the wireless LAN I / F 60 I do. The communication of the connection signal and the connection response signal is executed a plurality of times. For example, an Authentication Request signal is transmitted as a connection signal, and an Authentication Response signal is received as a connection response signal.
Further, for example, an Association Request signal is transmitted as a connection signal, and an Association Response signal is received as a connection response signal. When the target relay device is the MFP 10 operating as a G / O device, the MFP 10 receives the connection signal from the portable terminal 50 in S14 of FIG. 2, and transmits the connection response signal to the portable terminal 50 in S16. Send to 50.

In the process of communicating the connection signal and the connection response signal, the communication execution unit 82 transmits the authentication method information, the encryption method information, the password, the SSID, and the BSSID included in the wireless setting specified in S206. Accordingly, the target relay device executes authentication of the mobile terminal 50. If the authentication is successful, the connection between the mobile terminal 50 and the target relay device is successful, and as a result, the mobile terminal 50 newly joins the target wireless network. At the stage where S210 is executed, the mobile terminal 50 may belong to an existing wireless network.
In this case, the mobile terminal 50 leaves the existing wireless network and newly joins the target wireless network.

  Next, in S212, the communication execution unit 82 transmits a confirmation signal (for example, a ping signal) to the MFP 10 via the wireless LAN I / F 60 using the wireless network to which the mobile terminal 50 belongs. For example, in the case of YES in S208, the wireless network used in S212 is the existing wireless network to which the mobile terminal 50 belongs at the stage when the application processing in FIG. 4 is started. Further, for example, in the case of NO in S208, the wireless network used in S212 is the wireless network to which the portable terminal 50 has newly joined in the connection processing in S210.

  In S214, the communication execution unit 82 monitors reception of an acknowledgment signal (for example, a PING Response signal) from the MFP 10 via the wireless LAN I / F 60. As described above, when the PS setting of the relay device forming the wireless network used for the communication of the confirmation signal is ON, the communication execution unit 82 does not receive the confirmation response signal. In this case, the communication execution unit 82 determines NO in S214, and proceeds to S216. On the other hand, when receiving the confirmation response signal, the communication execution unit 82 determines YES in S214 and proceeds to S218.

  In S216, the communication execution unit 82 determines whether there is a wireless setting that has not yet been specified in S206 among the one or more wireless settings included in the response data received in S204. If there is no wireless setting that has not yet been specified in S206, the communication execution unit 82 determines NO in S216, and proceeds to S220. On the other hand, if there is a wireless setting that has not yet been specified in S206, the communication execution unit 82 determines YES in S216 and executes the second S206.

  In the second S206, the communication execution unit 82 specifies the wireless setting having the highest priority among the wireless settings that have not yet been specified in the first S206. In this embodiment, since “2” is the maximum as the number of wireless settings included in the response data, in the second S206, the communication execution unit 82 associates the wireless execution with the priority information indicating the second priority. The configured wireless settings. This wireless setting is a WFD wireless setting corresponding to the WFDNW (MFP = G / O). This is because, in S50 or S70 in FIG. 3, the WFD wireless setting corresponding to the WFDNW (MFP = G / O) is associated with the priority information indicating the second priority. Therefore, when S208 to S214 are executed thereafter, the communication execution unit 82 normally receives an acknowledgment signal from the MFP 10 in S214. In the WFDNW (MFP = G / O), since the communication is directly performed without the intervention of the relay device, the event that the data communication does not succeed due to the PS setting of the relay device being ON is caused. This is because it does not occur.

  In S218, the communication execution unit 82 communicates the target data via the wireless LAN I / F 60 using the wireless network in which the communication of the confirmation signal and the response signal has succeeded (hereinafter, referred to as a “specific wireless network”). Execute For example, when the print function is selected in S200, in S218, the communication execution unit 82 transmits print data to the MFP 10 via the wireless LAN I / F 60 using the specific wireless network. When the scan function is selected in S200, in S218, the communication execution unit 82 receives scan data from the MFP 10 via the wireless LAN I / F 60 using the specific wireless network. In this case, the control unit 70 causes the memory 74 to store the scan data. When S218 ends, the application processing of FIG. 4 ends.

  In S220, control unit 70 causes display unit 54 to display information indicating that communication between MFP 10 and target data is not executable. When S220 ends, the application processing of FIG. 4 ends. When the mobile terminal 50 has left the existing wireless network and joined a new wireless network in S210, the control unit 70 further executes the following processing when the application processing of FIG. 4 ends. Execute. That is, the control unit 70 disconnects the mobile terminal 50 from the wireless network that participated in S210, and causes the mobile terminal 50 to rejoin the existing wireless network.

(Specific case)
Next, a specific case realized by the MFP 10 and the mobile terminal 50 according to the present embodiment will be described with reference to FIGS. 5 to 8, a thin arrow between the MFP 10 and the portable terminal 50 indicates NFC communication, and a thick arrow between the MFP 10 and the portable terminal 50 indicates WFD communication or normal Wi-Fi communication. The PS setting of the AP 4a is ON.

(Fig. 5; Case A)
In Case A, a WFDNW (MFP = G / O) in which MFP 10 is a G / O device and PC 6 is a CL device is formed. In the WFDNW (MFP = G / O), the WFD wireless setting WS1 including the SSID “01” is used. Further, the MFP 10 and the portable terminal 50 belong to a normal Wi-Fi NW formed by the AP 4a. In the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS4 including the SSID “04” is used.

  When the print function is selected by the user (YES in S200 of FIG. 4), portable terminal 50 transmits request data including a print instruction and SSID “04” to MFP 10 using NFC communication (S202). .

  When receiving the request data from the portable terminal 50 (YES in S10 in FIG. 2), the MFP 10 determines YES in S30 in FIG. 3, determines YES in S32, determines YES in S34, and determines YES in S36. I do. As a result, the MFP 10 sets the normal Wi-Fi wireless setting WS4 associated with the priority information indicating the first priority and the WFD wireless setting associated with the priority information indicating the second priority. WS1 is transmitted to the portable terminal 50 using NFC communication (S50).

  Upon receiving the response data from the MFP 10 (S204 in FIG. 4), the mobile terminal 50 specifies the normal Wi-Fi wireless setting WS4 associated with the priority information indicating the first priority (S206). Next, the portable terminal 50 determines YES in S208, and transmits a confirmation signal to the MFP 10 using the normal Wi-Fi NW (S212). However, since the PS setting of the AP 4a is ON, the AP 4a does not transmit the confirmation signal to the MFP 10 even when receiving the confirmation signal from the mobile terminal 50. As a result, the portable terminal 50 does not receive the confirmation response signal, and determines NO in S214.

  Next, the mobile terminal 50 specifies the WFD wireless setting WS1 associated with the priority information indicating the second priority (S206). In this case, the mobile terminal 50 determines NO in S208, uses the WFD wireless setting WS1, connects to the MFP 10, which is a G / O device, and newly participates in the WFDNW (MFP = G / O) (S210). ). Next, the portable terminal 50 transmits a confirmation signal to the MFP 10 using the WFDNW (MFP = G / O) (S212).

  In the WFDNW (MFP = G / O), the confirmation signal is transmitted to the MFP 10 without passing through the relay device. Therefore, MFP 10 receives the confirmation signal from portable terminal 50 using WFDNW (MFP = G / O) (YES in S18 of FIG. 2). In this case, the MFP 10 transmits a confirmation response signal to the mobile terminal 50 using the WFDNW (MFP = G / O) (S20).

  When receiving the confirmation signal from MFP 10 (YES in S214 in FIG. 4), portable terminal 50 transmits the print data to MFP 10 using WFDNW (MFP = G / O) (S218). As a result, the MFP 10 receives the print data using the WFDNW (MFP = G / O) (S22 in FIG. 2). Thereby, the image represented by the print data is printed on the print medium.

(Fig. 6; Case B)
In Case B, the WFDNW (MFP = G / O) to which the MFP 10 and the PC 6 belong is the same as the WFDNW (MFP = G / O) in Case A. The MFP 10 belongs to the normal Wi-Fi NW formed by the AP 4a. In the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS4 including the SSID “04” is used. Further, the mobile terminal 50 belongs to the normal Wi-Fi NW formed by the AP 4b. In the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS5 including the SSID “05” is used.

  When the print function is selected by the user (YES in S200 of FIG. 4), portable terminal 50 transmits request data including a print instruction and SSID “05” to MFP 10 using NFC communication (FIG. 4). S202).

  When receiving the request data from portable terminal 50 (YES in S10 in FIG. 2), MFP 10 determines YES in S30 in FIG. 3, determines YES in S32, determines YES in S34, and determines NO in S36. I do. As a result, the MFP 10 transmits the response data including the WFD wireless setting WS1 and not including the normal Wi-Fi wireless setting WS4 to the mobile terminal 50 using the NFC communication (S60 in FIG. 3).

  Upon receiving the response data from the MFP 10 (S204 in FIG. 4), the mobile terminal 50 specifies the WFD wireless setting WS1 (S206). Next, the portable terminal 50 determines NO in S208, uses the WFD wireless setting WS1, connects to the MFP 10, which is a G / O device, and newly joins the WFDNW (MFP = G / O) (S210). . The subsequent operations of the MFP 10 and the portable terminal 50 are the same as those in the case A.

(Fig. 7; Case C)
In Case C, similarly to Case A, the MFP 10 and the mobile terminal 50 belong to the normal Wi-Fi NW formed by the AP 4a. In the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS2 including the SSID “02” is used. The MFP 10 and the portable terminal 50 do not belong to the WFDNW.

  When the print function is selected by the user (YES in S200 of FIG. 4), portable terminal 50 transmits request data including a print instruction and SSID “02” to MFP 10 using NFC communication (FIG. 4). S202).

  When receiving the request data from the portable terminal 50 (YES in S10 of FIG. 2), the MFP 10 determines NO in S30 of FIG. 3, determines YES in S40, determines YES in S42, and determines YES in S44. I do. As a result, the MFP 10 shifts to the autonomous G / O mode and forms a WFDNW (MFP = G / O) (S46). In the WFDNW (MFP = G / O), the WFD wireless setting WS3 is used. Next, the MFP 10 sets the normal Wi-Fi wireless setting WS2 associated with the priority information indicating the first priority and the WFD wireless setting WS3 associated with the priority information indicating the second priority. Is transmitted to the portable terminal 50 using NFC communication (S70).

  Upon receiving the response data from the MFP 10 (S204 in FIG. 4), the mobile terminal 50 specifies the normal Wi-Fi wireless setting WS2 associated with the priority information indicating the first priority (S206). Next, the portable terminal 50 determines YES in S208, and transmits a confirmation signal to the MFP 10 using the normal Wi-Fi NW (S212). However, since the PS setting of the AP 4a is ON, the AP 4a does not transmit the confirmation signal to the MFP 10 even when receiving the confirmation signal from the mobile terminal 50. As a result, the portable terminal 50 does not receive the confirmation response signal, and determines NO in S214.

  Next, the portable terminal 50 specifies the WFD wireless setting WS3 associated with the priority information indicating the second priority (S206). In this case, the portable terminal 50 determines NO in S208, connects to the MFP 10 as a G / O device using the WFD wireless setting WS3, and newly participates in the WFDNW (MFP = G / O) (S210). ). The subsequent operations of the MFP 10 and the portable terminal 50 are the same as those in the case A.

(FIG. 8; Case D)
In Case D, the MFP 10 belongs to the normal Wi-Fi NW formed by the AP 4a. In the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS2 including the SSID “02” is used. Further, the mobile terminal 50 belongs to the normal Wi-Fi NW formed by the AP 4b. In the normal Wi-Fi NW, a normal Wi-Fi wireless setting WS6 including the SSID “06” is used.

  When the print function is selected by the user (YES in S200 of FIG. 4), portable terminal 50 transmits request data including a print instruction and SSID “06” to MFP 10 using NFC communication (FIG. 4). S202).

  When receiving the request data from portable terminal 50 (YES in S10 in FIG. 2), MFP 10 determines NO in S30 in FIG. 3, determines YES in S40, determines YES in S42, and determines NO in S44. I do. As a result, the MFP 10 shifts to the autonomous G / O mode and forms a WFDNW (MFP = G / O) (S48). In the WFDNW (MFP = G / O), the WFD wireless setting WS3 is used. Next, the MFP 10 transmits the response data including the WFD wireless setting WS3 and not including the normal Wi-Fi wireless setting WS2 to the mobile terminal 50 using the NFC communication (S60).

  Upon receiving the response data from the MFP 10 (S204 in FIG. 4), the mobile terminal 50 specifies the WFD wireless setting WS3 (S206). Next, the portable terminal 50 determines NO in S208, uses the WFD wireless setting WS3 to connect to the MFP 10, which is a G / O device, and newly participates in the WFDNW (MFP = G / O) (S210). . The subsequent operations of the MFP 10 and the portable terminal 50 are the same as those in the case A.

(Effect of the first embodiment)
As shown in cases A and B in FIGS. 5 and 6, when the MFP 10 belongs to the WFDNW (MFP = G / O), the MFP 10 sets the WFD wireless setting WS1 corresponding to the WFDNW (MFP = G / O). Is transmitted to the portable terminal 50. For this reason, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the WFDNW (MFP = G / O).

  If the MFP 10 belongs to not only the WFDNW (MFP = G / O) but also the normal Wi-Fi NW, the MFP 10 is classified into Case A and Case B. That is, in the case A of FIG. 5, since the MFP 10 and the portable terminal 50 belong to the same normal Wi-Fi NW, the MFP 10 sets the normal Wi-Fi wireless setting WS4 corresponding to the normal Wi-Fi NW and the WFDNW (MFP = G / O) corresponding to the WFD wireless setting WS1. As a result, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the normal Wi-Fi NW or the WFDNW (MFP = G / O). Particularly, in case A, since the PS setting of the AP 4a is ON, the MFP 10 and the portable terminal 50 cannot execute the communication of the target data using the normal Wi-Fi NW. However, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the WFDNW (MFP = G / O).

  In case B of FIG. 6, since the MFP 10 and the mobile terminal 50 do not belong to the same normal Wi-Fi NW, the MFP 10 transmits the normal Wi-Fi wireless setting WS4 corresponding to the normal Wi-Fi NW to the mobile terminal 50. Instead, the WFD wireless setting WS1 corresponding to the WFDNW (MFP = G / O) is transmitted to the portable terminal 50. As a result, it is possible to suppress the security of the normal Wi-Fi NW to which the MFP 10 belongs from being reduced. Moreover, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the WFDNW (MFP = G / O).

  As shown in case C of FIG. 7, MFP 10 does not belong to WFDNW (MFP = G / O), but if it belongs to normal Wi-FiNW, WFDNW (MFP = G / O) Is newly formed. Since the MFP 10 and the portable terminal 50 belong to the same normal Wi-Fi NW, the MFP 10 has the normal Wi-Fi wireless setting WS2 corresponding to the normal Wi-Fi NW and the WFD wireless corresponding to the WFDNW (MFP = G / O). The setting WS3 is transmitted to the portable terminal 50. As a result, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the normal Wi-Fi NW or the WFDNW (MFP = G / O). Particularly, in case C, since the PS setting of the AP 4a is ON, the MFP 10 and the portable terminal 50 cannot execute the communication of the target data using the normal Wi-Fi NW. However, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the WFDNW (MFP = G / O).

  Further, as shown in case D of FIG. 8, since the MFP 10 and the portable terminal 50 do not belong to the same normal Wi-Fi NW, the MFP 10 transmits the normal Wi-Fi wireless setting WS2 corresponding to the normal Wi-Fi NW. The WFD wireless setting WS3 corresponding to the WFDNW (MFP = G / O) is transmitted to the portable terminal 50 without transmitting to the terminal 50. For this reason, it is possible to prevent the security of the normal Wi-Fi NW to which the MFP 10 belongs from being reduced. Moreover, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the WFDNW (MFP = G / O).

(Correspondence)
The MFP 10 is an example of a “communication device”. The NFC I / F 22 and the wireless LAN I / F 20 of the MFP 10 are examples of “a first type of communication device interface” and “two types of communication device interface”, respectively. The NFC I / F 62 and the wireless LAN I / F 60 of the mobile terminal 50 are examples of a “first type interface of a mobile terminal” and a “second type interface of a mobile terminal”, respectively. The request data communicated in S10 of FIG. 2 and S202 of FIG. 4 and the SSID included in the request data are examples of “specific data” and “identification information”, respectively. The wireless setting included in the response data communicated in S12 of FIG. 2 and S204 of FIG. 4 is an example of “specific information”. The priority information transmitted in S50 and S70 in FIG. 3 is an example of “instruction information”. The G / O state is an example of a “parent station”, and the client state or a state of participating in a normal Wi-Fi NW is an example of a “child station”.

  In case A of FIG. 5, the WFDNW (MFP = G / O), the WFD wireless setting WS1, the normal Wi-Fi NW, and the normal Wi-Fi wireless setting WS4 are “first wireless network” and “first information,” respectively. , "Fourth wireless network", and "fourth information". 7 and 8, the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS2, the WFDNW (MFP = G / O) formed by the MFP 10, and the WFD wireless setting WS3 are respectively “second Wireless network "," second information "," third wireless network ", and" third information ". The wireless network used in S22 of FIG. 2 and S218 of FIG. 4 is an example of the “specific wireless network”. The case of YES in S30 of FIG. 3 and the case of YES in S42 are examples of the “first case” and the “second case”, respectively. S50 of FIG. 3 or S60 executed through S36 is an example of a process executed by the “first information transmitting unit”. S70 is an example of processing executed by the “second information transmitting unit”. S60 executed after S48 is an example of the processing executed by the “third information transmitting unit”.

  In cases A and B of FIGS. 5 and 6, the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS4, the WFDNW (MFP = G / O), and the WFD wireless setting WS1 are respectively a “fifth wireless network”, It is an example of "fifth information", "sixth wireless network", and "sixth information". In Cases C and D of FIGS. 7 and 8, the normal Wi-Fi NW, the normal Wi-Fi wireless setting WS2, the WFDNW (MFP = G / O) formed by the MFP 10, and the WFD wireless setting WS3 are respectively referred to as “fifth. Wireless network "," fifth information "," sixth wireless network ", and" sixth information ". The case of YES in S36 of FIG. 3 or the case of YES in S44 is an example of the “third case”, and the case of NO in S36 or the case of NO in S44 is the “fourth case”. This is an example.

(Second embodiment)
In the present embodiment, the contents of the response transmission process (FIG. 3) in S12 of FIG. 2 are different from those of the first embodiment. As described above, in the first embodiment, if the MFP 10 and the portable terminal 50 do not belong to the same normal Wi-Fi NW (NO in S36 or NO in S44 in FIG. 3), the MFP 10 sets the normal Wi-Fi wireless setting. It is not transmitted to the portable terminal 50 (S60). If the MFP 10 and the portable terminal 50 do not belong to the same WFDNW (MFP = CL) (NO in S44), the MFP 10 does not transmit the WFD wireless setting corresponding to the WFDNW (MFP = CL) to the portable terminal 50 ( S60). In contrast, in the present embodiment, the MFP 10 is compatible with all wireless networks that can execute communication of target data with the mobile terminal 50 regardless of whether the MFP 10 and the mobile terminal 50 belong to the same wireless network. All the wireless settings to be performed are transmitted to the mobile terminal 50.

  S130 and S132 in FIG. 9 are the same as S30 and S34 in FIG. If YES in S132, the MFP 10 belongs to the normal Wi-Fi NW and the WFDNW (MFP = G / O). In this case, in S150, the first information transmitting unit 41 executes the same processing as S50 in FIG. If NO in S132, the MFP 10 belongs to the WFDNW (MFP = G / O). In this case, in S160, the first information transmitting unit 41 executes the same processing as in S60 of FIG.

  S134 is the same as S132. If YES in S134, control unit 30 determines in S136 whether MFP 10 belongs to the WFDNW (MFP = CL). The determination method in S136 is the same as the determination method used in S42 in FIG. The forming unit 44 executes S138 if YES in S136, and executes S140 if NO in S136. S138 and S140 are the same as S46 (or S48) in FIG.

  When S138 is executed, the MFP 10 belongs to the normal Wi-Fi NW, the WFDNW (MFP = CL), and the WFDNW (MFP = G / O). In S170 executed after S138, the second information transmitting unit 42 associates the normal Wi-Fi wireless setting corresponding to the normal Wi-Fi NW with the priority information indicating the first priority. First correspondence information is generated. The second information transmitting unit 42 further generates second correspondence information in which the WFD wireless setting corresponding to the WFDNW (MFP = CL) is associated with the priority information indicating the second priority. I do. The second information transmitting unit 42 further includes a third correspondence information in which the WFD wireless setting corresponding to the WFDNW (MFP = G / O) is associated with the priority information indicating the third priority. Generate Then, the second information transmitting unit 42 generates response data including the first correspondence information, the second correspondence information, and the third correspondence information. In S170, the second information transmitting unit 42 further transmits the generated response data to the mobile terminal 50 via the NFC I / F 22.

  At the stage of S170, the mobile terminal 50 cannot belong to the WFDNW (MFP = G / O). This is because the WFDNW (MFP = G / O) is a new WEDNW formed by the MFP 10 in S138. However, at the stage of S170, the portable terminal 50 may belong to the normal Wi-Fi NW or WFDNW (MFP = CL). Therefore, in this embodiment, in S170, the response data is generated such that the priority of the normal Wi-Fi NW and the WFDNW (MFP = CL) is higher than the priority of the WFDNW (MFP = G / O). . Thereby, the possibility that the portable terminal 50 does not need to execute the connection processing of S210 in FIG. 4 can be increased, and as a result, the processing load on the portable terminal 50 can be reduced. In the modified example, in S170, the second information transmitting unit 42 sets the priority of the WFDNW (MFP = CL) to the first priority, and sets the priority of the normal Wi-FiNW to the second priority. As such, response data may be generated.

  When S140 is executed, the MFP 10 belongs to the normal Wi-Fi NW and the WFDNW (MFP = G / O). S180 executed after S140 is the same as S70 in FIG. 3 in which the normal Wi-Fi NW is adopted as the first priority.

  S142 is the same as S136. The forming unit 44 executes S144 when S142 is YES, and executes S146 when S142 is NO. S144 and S146 are the same as S46 (or S48) in FIG.

  When S144 is executed, the MFP 10 belongs to WFDNW (MFP = CL) and WFDNW (MFP = G / O). S190 executed after S144 is the same as S70 in FIG. 3 in which WFDNW (MFP = CL) is adopted as the first priority.

  When S146 is executed, the MFP 10 belongs to the WFDNW (MFP = G / O). S160 executed after S146 is the same as S60 in FIG.

(Effect of Second Embodiment)
In the present embodiment, when the MFP 10 belongs to the WFDNW (MFP = G / O) (YES in S130), the MFP 10 transmits the WFD wireless setting corresponding to the WFDNW (MFP = G / O) to the portable terminal 50 ( S150, S160). For this reason, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data using the WFDNW (MFP = G / O). MFP 10 does not belong to WFDNW (MFP = G / O), but belongs to another wireless network (normal Wi-FiNW or WFDNW (MFP = CL)) (YES in S134, or In S142 (YES in S142), a WFDNW (MFP = G / O) is newly formed, and the wireless setting corresponding to the other wireless network (normal Wi-Fi wireless setting or WFDNW (MFP = CL)) is supported. The WFD wireless setting) and the WFD wireless setting corresponding to the WFDNW (MFP = G / O) are transmitted to the portable terminal 50 (S170, S180, S190). For this reason, the MFP 10 and the portable terminal 50 can appropriately execute the communication of the target data by using the other wireless network or the WFDNW (MFP = G / O). Even if the MFP 10 and the portable terminal 50 cannot execute the communication of the target data by using the other wireless network, the MFP 10 and the portable terminal 50 can use the WFDNW (MFP = G / O), the communication of the target data can be appropriately executed.

(Correspondence)
The case of YES in S130 is an example of the “first case”. That is, the WFDNW (MFP = G / O) is an example of the “first wireless network”. The case of YES in S134 or the case of YES in S142 is an example of the “second case”. That is, the normal Wi-Fi NW or the WFDNW (MFP = CL) is an example of the “second wireless network”. The WFDNW (MFP = G / O) formed in S138, S140, or S146 is an example of the “third wireless network”. Further, S150 or S160 is an example of a process executed by the “first information transmitting unit”. S170, S180, or S190 is an example of processing executed by the “second information transmission unit”.

  As described above, the specific examples of the present invention have been described in detail. However, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. Modifications of the above embodiment are listed below.

(Modification 1) In case A of FIG. 5, the first information transmitting unit 41 of the MFP 10 transmits all information (ie, authentication method information, encryption method information, SSID, BSSID, , Password) is transmitted to the portable terminal 50 (S50 in FIG. 3). Instead, the first information transmitting unit 41 may transmit, to the portable terminal 50, response data including a part of the information (for example, the SSID and the password) of the WFD wireless setting WS1. In this case, when the mobile terminal 50 should newly participate in the WFDNW (MFP = G / O), the communication execution unit 82 of the mobile terminal 50 executes an SSID search (that is, transmits a PReq signal). A Pres signal may be received from the MFP 10 operating as a G / O device. The PREs signal includes various information used in the WFDNW (MFP = G / O) (that is, authentication method information, encryption method information, SSID, and BSSID). Accordingly, the communication execution unit 82 can acquire each piece of information (that is, the authentication method information, the encryption method information, and the BSSID) other than a part of the information included in the response data, and newly join the WFDNW. can do. That is, the “first information” may be all information of the WFD wireless setting WS1 as in the above-described embodiment, or may be one of the WFD wireless settings WS1 as in the present modification. Department information may be used. Similarly, the “sixth information” may be all information of the WFD wireless setting WS1, or may be a part of the information of the WFD wireless setting WS1.

(Modification 2) As in Modification 1, the “second information” may be all information in the normal Wi-Fi wireless setting WS2 (see case C in FIG. 7) or the normal Wi. It may be a part of the information of the Fi wireless setting WS2. In case C of FIG. 7, since the MFP 10 and the mobile terminal 50 belong to the same normal Wi-Fi NW, the memory 74 of the mobile terminal 50 has already stored the normal Wi-Fi wireless setting. Therefore, instead of transmitting the normal Wi-Fi wireless setting WS2, the second information transmitting unit 42 transmits the continuous usage information indicating that the wireless network to which the mobile terminal 50 belongs to is continuously used, to the mobile terminal 50. May be sent. In the present modification, the continuous use information is an example of “second information”. Similarly, the “fifth information” may be all the information of the normal Wi-Fi wireless setting WS2 or may be a part of the information of the normal Wi-Fi wireless setting WS2. Alternatively, it may be continuous usage information.

(Modification 3) Similarly to Modification 1, the “third information” may be all information of the WFD wireless setting WS3 (see cases C and D in FIGS. 7 and 8), It may be a part of information of the WFD wireless setting WS3. Similarly, the “sixth information” may be all the information of the WFD wireless setting WS3, or may be a part of the information of the WFD wireless setting WS3.

(Modification 4) As in Modification 1, the “fourth information” may be all information of the normal Wi-Fi wireless setting WS4 (see case A in FIG. 5) or the normal Wi. It may be a part of the information of the Fi wireless setting WS4. Further, similarly to the second modification, the first information transmitting unit 41 may transmit the continuous usage information to the mobile terminal 50 instead of transmitting the normal Wi-Fi wireless setting WS4. In the present modification, the continuous use information is an example of “fourth information”. Similarly, the “fifth information” may be all the information of the normal Wi-Fi wireless setting WS4, or may be a part of the information of the normal Wi-Fi wireless setting WS4. Alternatively, it may be continuous usage information.

(Modification 5) In S50, S70 of FIG. 3, S150, S170, S180, or S190 of FIG. 9, the response data including the priority information indicating the priority different from the priority adopted in the process is used. It may be sent. For example, in S50 of FIG. 3, in the response data, the WFD wireless setting may have the first priority, and the normal Wi-Fi wireless setting may have the second priority. That is, in each of the above processes, the priority order indicated by the instruction information transmitted by the first and second information transmitting units 41 and 42 is not particularly limited.

(Modification 6) In S50, S70 of FIG. 3, S150, S170, S180, or S190 of FIG. 9, response data including a plurality of wireless settings without transmitting the priority information may be transmitted. In this case, the communication execution unit 82 of the mobile terminal 50 may sequentially use, for example, each of the plurality of wireless settings included in the response data at random. Generally speaking, the second information transmitting section 42 only needs to transmit the second information and the third information to the portable terminal, and the first information transmitting section 41 has the first information and the fourth information. May be transmitted to the mobile terminal.

(Modification 7) If YES in S30 of FIG. 3, the MFP 10 may execute S60 without executing S32 to S36 and S50. That is, the first information transmitting unit 41 may transmit the first information in the first case. Further, the MFP 10 may skip S40 and execute S42 if NO in S30 of FIG. 3, and may skip S44 and execute S46 and S70 if YES in S42. That is, the second information transmitting section 42 may transmit the second information and the third information in the second case. Generally speaking, in one technology disclosed in the present specification, the device-side control unit includes a specific data receiving unit, a first information transmitting unit, a forming unit, a second information transmitting unit, and a device-side control unit. What is necessary is just to have at least the communication execution part.

(Modification 8) The MFP 10 executes S32 to S36, S50, and S60 in the case of YES in S30 of FIG. 3, but does not execute communication of the target data with the portable terminal 50 in the case of NO in S30. Is also good. Further, the MFP 10 may execute S40 to S48, S60, and S70 without executing S30 to S36 and S50 in FIG. That is, generally speaking, according to one technology disclosed in the present specification, the device-side control unit may include at least the specific data receiving unit, the determination unit, the information transmitting unit, and the device-side communication execution unit. I just need.

(Modification 9) The communication execution unit 82 of the portable terminal 50 does not execute the communication of the confirmation signal and the confirmation response signal (without performing S212 and S214 in FIG. 4), and outputs the plurality of data included in the response data. The communication of the target data may be attempted using a wireless network corresponding to any one of the wireless settings. In this case, when the communication of the target data fails, the communication execution unit 82 attempts to communicate the target data using a wireless network corresponding to another wireless setting among the plurality of wireless settings. Good. This modification is also an example of “using each of a plurality of wireless networks sequentially”.

(Variation 10) A “master station” is not limited to a WFDNW G / O device, but is in a state of managing each device belonging to a wireless network (for example, a state in which wireless communication between devices belonging to a wireless network can be relayed) ), Any state is acceptable. Further, the “slave station” is not limited to the WFDNW client state or the state belonging to the normal Wi-Fi NW, but may be any state as long as it is managed by the master station of the wireless network. Good.

(Modification 11) The “first type interface” is not limited to an interface for executing NFC communication, but may be an interface for executing infrared communication, or may be an interface for executing Bluetooth (registered trademark). Interface or an interface for executing Transfer Jet. Generally speaking, it is sufficient that the communication speed of wireless communication via the second type interface is faster than the communication speed of wireless communication via the first type interface.

(Modification 12) The “first type interface” and the “second type interface” are two interfaces (for example, two IC chips) configured separately as in the above embodiment. It may be a single interface or a single interface (for example, one IC chip).

(Modification 13) The “communication device” is not limited to the MFP 10 and may be another communication device (for example, a printer, a scanner, a facsimile device, a copier, a telephone, a desktop PC, a notebook PC, a tablet PC, a server, a mobile phone, a PDA). Terminal or the like). The “target data” is not limited to print data and scan data, but may be other data (for example, voice data, FAX data, and the like).

(Modification 14) In the above embodiment, the functions of the units 40 to 47 are realized by the CPU 32 of the MFP 10 executing the program (ie, software) in the memory 34. Instead, at least one of the units 40 to 47 may be realized by hardware such as a logic circuit. Similarly, at least one of the units 80 to 82 may be realized by hardware such as a logic circuit.

  In addition, the technical elements described in the present specification or the drawings exhibit technical utility singly or in various combinations, and are not limited to the combinations described in the claims at the time of filing. The technology illustrated in the present specification or the drawings simultaneously achieves a plurality of objects, and has technical utility by achieving one of the objects.

  2: Communication system, 4a, 4b: AP, 10: MFP, 50: portable terminal, WS1 to WS6: wireless setting

Claims (6)

A mobile terminal,
A first type of interface for performing communication apparatus and the wireless communication,
A second type interface for executing wireless communication with the communication device, wherein the communication speed of the wireless communication via the second type interface is the communication speed of the wireless communication via the first type interface. Faster than the second type of interface,
A terminal-side control unit,
The communication device can belong to both of a plurality of wireless networks at the same time, and the mobile terminal cannot belong to both of the plurality of wireless networks at the same time,
The terminal-side control unit includes:
An information receiving unit that receives a first SSID and a second SSID from the communication device via the first type interface, wherein the first SSID identifies a first wireless network. is information for the second SSID, the first Ri information der for identifying different second wireless network and a wireless network, the first identified by the first SSID The wireless network is a network formed by a relay device different from the communication device, and the second wireless network identified by the second SSID is a network formed by the communication device. ,
A determining unit that determines whether or not communication with the communication device is possible via the first wireless network identified by the received first SSID;
In a first case where it is determined that communication with the communication device is possible via the first wireless network, the communication is performed via the second type interface using the first wireless network. A second case of performing communication between the device and the target data and determining that communication with the communication device is not possible via the first wireless network , using the second SSID; A terminal-side connection execution unit that executes connection processing for the mobile terminal to belong to the second wireless network;
A terminal-side communication execution unit that executes communication between the communication device and the target data via the second type of interface using the second wireless network;
A mobile terminal comprising:   The information receiving unit further receives priority information including information indicating that the priority of the first SSID is higher than the second SSID,
  The determination unit is capable of communicating with the communication device via the first wireless network identified by the received first SSID according to the priority indicated by the received priority information. The mobile terminal according to claim 1, wherein the mobile terminal determines whether or not the mobile terminal is connected. Said first terminal side communication execution unit executes at least one of receiving the scanned data from the transmission and the communication device of the print data to the communication device, a portable terminal according to claim 1 or 2. The second type of interface performs wireless communication in accordance with the 802.11 standard of the Institute of Electrical and Electronic Engineers, Inc. and the standard conforming to the 802.11 standard of the Institute of Electrical and Electronic Engineers, Inc. The mobile terminal according to any one of claims 1 to 3 , which is an interface for executing. The mobile terminal according to any one of claims 1 to 4 , wherein the first type interface is an interface for executing wireless communication in accordance with Near Field Communication standards. A computer program for a mobile terminal,
The mobile terminal,
A first type of interface for performing communication apparatus and the wireless communication,
A second type interface for executing wireless communication with the communication device, wherein the communication speed of the wireless communication via the second type interface is the communication speed of the wireless communication via the first type interface. Faster than said second type of interface,
The communication device can belong to both of a plurality of wireless networks at the same time, and the mobile terminal cannot belong to both of the plurality of wireless networks at the same time,
The computer program stores the following processes in a computer mounted on the mobile terminal, namely:
An information receiving process of receiving a first SSID and a second SSID from the communication device via the first type interface, wherein the first SSID identifies a first wireless network. is information for the second SSID, the first Ri information der for identifying different second wireless network and a wireless network, the first identified by the first SSID wireless network is a network to which the communication device is different from the relay apparatus to form said second wireless network identified by the second SSID is Ru network der which the communication device is formed, the information reception process When,
A determination process of determining whether communication with the communication device is possible via the first wireless network identified by the received first SSID;
In a first case where it is determined that communication with the communication device is possible via the first wireless network, the communication is performed via the second type interface using the first wireless network. A second case of performing communication between the device and the target data and determining that communication with the communication device is not possible via the first wireless network , using the second SSID; Terminal-side connection execution processing for executing connection processing for the mobile terminal to belong to the second wireless network;
Using the second wireless network, via the second type of interface, a terminal-side communication execution process for executing communication between the communication device and the target data;
A computer program that runs

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