JP2022187863A - Communication apparatus, computer program for terminal device, and terminal device - Google Patents

Abstract

To provide a technique for improving convenience of a user of a communication apparatus.SOLUTION: A communication apparatus includes: a first wireless interface; a second wireless interface for executing wireless communication based on a second standard; and a third wireless interface. In response to establishment of a first wireless connection via the first wireless interface, when a second wireless connection is established with a terminal device via the second wireless interface after the operation state of the second wireless interface is shifted from a first state to a second state, the communication apparatus uses the second wireless connection to receive from the terminal device a first SSID (abbreviation of Service Set Identifier) and a first password of the first wireless network. The communication apparatus uses the first SSID and the first password to establish first Wi-Fi connection with an access point that operates as a master station of the first wireless network, via the third wireless interface.SELECTED DRAWING: Figure 2

Description

This specification discloses a technique for establishing a Wi-Fi connection between a communication device and an access point using a terminal device.

Patent Literature 1 discloses a communication system including an information processing device and a communication device. The information processing device transmits a BLE (abbreviation for Bluetooth (registered trademark) Low Energy) connection request to the communication device via the short-range wireless communication unit, and establishes a BLE connection with the communication device. Then, the information processing device acquires network information including information (SSID, password, etc.) of the access point to which the communication device is connected by performing GATT communication with the communication device. Thereby, the information processing device can establish a wireless connection with the access point using the network information.

JP 2017-184169 A JP 2019-36319 A

This specification provides a technology that can improve convenience for users of communication devices.

Disclosed herein is a communication device. The communication device includes a first wireless interface for performing wireless communication according to a first standard different from the Wi-Fi standard, and a second wireless interface different from the first standard and the Wi-Fi standard. A terminal through a second wireless interface for performing wireless communication according to the standard, a third wireless interface for performing wireless communication according to the Wi-Fi standard, and the first wireless interface a first transition unit for transitioning an operating state of the second wireless interface from a first state to a second state when a first wireless connection is established with a device, the first transition unit The state is a state in which a second wireless connection cannot be established with the terminal device via the second wireless interface, and the second state is the terminal device via the second wireless interface. wherein the operating state of the first transition unit and the second wireless interface is transitioned from the first state to the second state, which is a state in which the second wireless connection can be established with the in response to establishing the second wireless connection with the terminal device via the second wireless interface, the second wireless connection is used from the terminal device to transmit the second a first SSID (abbreviation of Service Set Identifier) of a first wireless network and a first password via the wireless interface of the first wireless network; Operates as a master station of the first wireless network via the third wireless interface using the first SSID and the first password when a first password is received and a first establishing unit for establishing a first Wi-Fi connection with the access point.

According to this configuration, the communication device establishes the first wireless connection with the terminal device via the first wireless interface without receiving an operation on the operation unit of the communication device from the user. The operating state of the radio interface is shifted from the first state to the second state. As a result, the communication device is able to establish a second wireless connection with the terminal over the second wireless interface, and utilizes the second wireless connection to communicate with the terminal over the first wireless network. A first SSID and a first password can be received. Accordingly, the communication device can establish a first Wi-Fi connection via the third wireless interface with the access point acting as the parent station of the first wireless network. For this reason, it is possible to improve convenience for the user of the communication device.

Also disclosed herein is a computer program product for a terminal device. The terminal device has a first wireless interface for performing wireless communication according to a first standard different from the Wi-Fi standard, and a second standard different from the first standard and the Wi-Fi standard. and a computer. The computer program causes the computer to communicate with the communication device via the second wireless interface in response to establishing a first wireless connection with the communication device via the first wireless interface. When a second wireless connection is established, a first wireless network of a first wireless network according to the Wi-Fi standard via the second wireless interface using the second wireless connection A setting information transmission unit configured to transmit an SSID (abbreviation of Service Set Identifier) and a first password to the communication device, wherein the first SSID and the first password are used for the first wireless network. It may function as the setting information transmission unit used by the communication device to establish a first Wi-Fi connection with an access point operating as a master station.

According to this configuration, the terminal device establishes the second wireless connection with the communication device via the second wireless interface in response to establishing the first wireless connection with the communication device via the first wireless interface. When establishing a connection, the second wireless connection is utilized to transmit a first SSID and a first password of the first wireless network to the communication device. Therefore, the communication device establishes the second wireless connection with the terminal device when establishing the first wireless connection with the terminal device without receiving an operation on the operation unit of the communication device from the user. A first SSID and a first password can be received from the terminal device. Accordingly, the communication device can establish a first Wi-Fi connection with an access point acting as a parent station for the first wireless network. For this reason, it is possible to improve convenience for the user of the communication device.

A computer program for implementing the above communication device, a computer storage medium storing the computer program, and a method performed by the communication device are also novel and useful. A computer readable storage medium storing a computer program for the above terminal, the terminal itself, and the method performed by the terminal are also new and useful. Also, a communication system comprising the above communication device and terminal device is novel and useful.

1 shows the configuration of a communication system; FIG. 4 shows a sequence diagram of processing for establishing a Wi-Fi connection between a printer and an access point; FIG. 4 shows a sequence diagram of processing for establishing a Wi-Fi connection between a printer and a mobile terminal;

(Configuration of communication system 2; Fig. 1)
As shown in FIG. 1, the communication system 2 includes a mobile terminal 10 (hereinafter simply referred to as "terminal 10"), a printer 100, and an access point 200. An access point is hereinafter referred to as "AP (abbreviation for Access Point)". The terminal 10 has established a wireless connection with the AP 200, that is, a wireless connection conforming to the Wi-Fi standard (hereinafter referred to as "Wi-Fi connection"). The AP 200 stores an SSID (abbreviation of Service Set Identifier) 'ap01' for identifying a wireless network formed by the AP 200 and a password 'xxx' used in the wireless network. In this embodiment, the terminal 10 is used to establish a Wi-Fi connection between the printer 100 and the AP 200 or between the printer 100 and the terminal 10 (hereinafter referred to as "setup"). exist).

(Configuration of terminal 10)
The terminal 10 is a portable terminal device such as a mobile terminal (for example, smart phone), PDA, tablet PC, or the like. In a modification, the terminal 10 may be a stationary terminal device such as a desktop PC. The terminal 10 includes a display unit 12 , a Wi-Fi interface 14 , a BT (abbreviation for Bluetooth (registered trademark)) interface 16 , an NFC interface 18 , and a control unit 30 . Each unit 12 to 30 is connected to a bus line (reference numerals omitted). In addition, below, an interface is simply described as "I/F."

The display unit 12 is a display for displaying various information. The display unit 12 also functions as a touch panel (that is, an operation unit) that receives instructions from the user.

The Wi-Fi I/F 14 is a wireless interface for executing wireless communication conforming to the Wi-Fi standard (hereinafter referred to as "Wi-Fi communication"). The Wi-Fi standard is, for example, the IEEE (abbreviation of The Institute of Electrical and Electronics Engineers, Inc) 802.11 standard and standards conforming thereto (eg, 802.11a, 11b, 11g, 11n, 11ac, etc.) is.

The BTI/F 16 is an I/F for executing wireless communication conforming to the BT standard (hereinafter referred to as "BT communication"). The BT standard is, for example, the IEEE802.15.1 standard and standards based thereon. More specifically, the BTI/F 16 supports BLE (short for Bluetooth Low Energy). BLE is implemented in BT standard version 4.0 and later versions.

Describe the differences between Wi-Fi communication and BT communication. The communication speed of Wi-Fi (for example, the maximum communication speed is 600 Mbps) is faster than the communication speed of BT communication (for example, the maximum communication speed is 24 Mbps). The carrier wave frequency in Wi-Fi communication is 2.4 GHz band or 5.0 GHz band. The carrier frequency in BT communication is 2.4 GHz. That is, when the 5.0 GHz band is adopted as the frequency of the carrier wave in Wi-Fi communication, the frequency of the carrier wave in Wi-Fi communication is different from the frequency of the carrier wave in NFC communication. Also, the maximum distance over which Wi-Fi communication can be performed (eg, about 100 m) is longer than the maximum distance over which BT communication can be performed (eg, about several tens of meters).

The NFCI/F 18 is an I/F for performing wireless communication (hereinafter referred to as "NFC communication") conforming to the NFC standard. The NFC system is a wireless communication system based on international standards such as ISO/IEC14443, 15693, 18092, for example.

The differences between BT communication and NFC communication will be described. The communication speed of BT communication (for example, the maximum communication speed is 24 Mbps) is faster than the communication speed of NFC communication (for example, the maximum communication speed is 100 to 424 Kbps). The frequency of carrier waves in BT communication is in the 2.4 GHz band. The carrier frequency in NFC communication is 13.56 GHz. That is, the frequency of the carrier wave in BT communication is different from the frequency of the carrier wave in NFC communication. Also, the maximum distance over which BT communication can be performed (for example, about several tens of meters) is longer than the maximum distance over which NFC communication can be performed (for example, about 10 cm).

The control unit 30 has a CPU 32 and a memory 34 . CPU 32 executes various processes according to programs 36 and 38 stored in memory 34 . The memory 34 comprises a volatile memory, a non-volatile memory, etc., and includes an OS (Operating System) program 36 (hereinafter simply referred to as "OS 36") and a print application 38 (hereinafter simply referred to as "application 38"). do). The memory 34 further stores an SSID (abbreviation of Service Set Identifier) 'ap01' for identifying the wireless network formed by the AP 200 and a password 'xxx' used in the wireless network.

The OS 36 is a program for controlling basic operations of the terminal 10. For example, i
OS (registered trademark), Android (registered trademark), and the like. For example, the application 38 may be installed in the terminal 10 from a server on the Internet provided by the vendor of the printer 100 or the like, or may be installed in the terminal 10 from media shipped together with the printer 100 or the like.

(Configuration of Printer 100)
The printer 100 is a peripheral device capable of executing a print function (for example, a peripheral device of the terminal 10). The printer 100 may be a multi-function device capable of executing a scanning function, a FAX function, etc. in addition to the printing function. Printer 100 includes display unit 112 , Wi-Fi I/F 114 , BTI/F 116 , NFCI/F 118 , print execution unit 120 , operation unit 122 and control unit 130 .

The display unit 112 is a display for displaying various information. Wi-Fi I/F 114 is the same as Wi-Fi I/F 14 of terminal 10 . BTI/F 116 is similar to BTI/F 16 of terminal 10 . NFCI/F 118 is similar to NFCI/F 18 of terminal 10 .

The print execution unit 120 is a printing mechanism such as an inkjet method or a laser method. The operation unit 122 has a plurality of keys. A user can input various instructions to the printer 100 by operating the operation unit 122 .

Control unit 130 includes CPU 132 and memory 134 . CPU 132 executes various processes according to programs 136 stored in memory 134 . The memory 134 is composed of a volatile memory, a nonvolatile memory, or the like. The memory 134 also stores the device name “dv1” assigned to the printer 100 .

(Connection processing; Figs. 2 and 3)
2 and 3, processing for establishing Wi-Fi connection between printer 100 and AP 200 (see FIG. 2), and processing for establishing Wi-Fi connection between printer 100 and terminal 10. The establishment process (see FIG. 3) will be described. In the initial state of FIGS. 2 and 3, the terminal 10 has established a Wi-Fi connection with the AP200.

In the following, for ease of understanding, when describing processing executed by the CPU 32 of the terminal 10 according to the OS 36 or the application 38, the terminal 10 will be described as the main subject instead of the CPU 32 as the main subject. Also, when describing the processing executed by the CPU 132 of the printer 100 by means of the program 136, the CPU 132 will not be the subject of the description, but the printer 100 will be the subject of the description. In the drawings of FIGS. 2 and 3, BT communication, Wi-Fi communication, and NFC communication are represented by thick solid lines, thin solid lines, and broken lines, respectively.

(Case A; Fig. 2)
At T10, the printer 100 accepts an operation to turn on the power. As a result, the printer 100 is powered on.

The terminal 10 displays a selection screen on the display unit 12 at T22 in response to receiving an operation for starting the application 38 from the user at T20. The selection screen includes a button B1 for establishing a Wi-Fi connection between the printer 100 and the AP 200 and a button B2 for establishing a Wi-Fi connection between the printer 100 and the terminal 10. FIG. In this case A, the terminal 10 receives an operation of selecting the button B1 from the user at T24. In case B of FIG. 3, which will be described later, button B2 is selected.

When the terminal 10 accepts the operation of selecting the button B1 in T24, it causes the display unit 12 to display an instruction screen in T26. The instruction screen is a screen for establishing Wi-Fi connection between the printer 100 and the AP 200 . The instruction screen includes a message to the effect that the printer is to be connected to the AP, and a message to prompt that the terminal 10 should be tapped (that is, brought closer to the printer 100). Therefore, the user can know to tap the terminal 10 to the printer 100 .

When the user brings the terminal 10 close to the printer 100 at T28, an NFC connection is established between the NFCI/F 18 of the terminal 10 and the NFCI/F 118 of the printer 100 at T30. In this case, the printer 100 shifts to WFD (abbreviation of Wi-Fi Direct (registered trademark)) system G/O (abbreviation of Group Owner) at T31.

Next, at T32, the printer 100 uses the NFC connection to send the SSID "pr01" and the password "yyy" to the terminal 10. FIG. The SSID “pr01” and password “yyy” transmitted here are the SSID of the wireless network in which the printer 100 operates as a WFD (abbreviation of Wi-Fi Direct (registered trademark)) system G/O (abbreviation of Group Owner). and password. However, in this case A, a Wi-Fi connection according to the WFD method is not established between the terminal 10 and the printer 100 . For this reason, the SSID 'pr01' and the password 'yyy' are not used by the terminal 10 .

When the NFC connection is established at T30, the printer 100 further starts repeatedly transmitting advertising signals according to the BT standard at T34. That is, the BTI/F 116 transitions from a state of not transmitting an advertising signal to a state of transmitting an advertising signal. As a result, the printer 100 changes the state of the BTI/F 116 from a state in which it is impossible to establish an L2CAP Link (that is, a BT connection) with the terminal 10 via the BTI/F 116 to a state in which a BT connection can be established. migrate. In this way, the printer 100 does not transition to a state in which the BT connection can be established until the NFC connection with the terminal 10 is established. For this reason, the communication load on the BTI/F 116 is reduced compared to a configuration that always maintains a state in which a BT connection can be established, that is, a state in which an advertisement signal is transmitted in this embodiment. The advertise signal transmitted at T34 includes the device name “dv1” of the printer 100 .

When the terminal 10 establishes the NFC connection with the printer 100 at T30, the terminal 10 causes the BTI/F 16 to scan the advertise signal at T34. That is, the BTI/F 16 transitions from a state of not receiving an advertising signal to a state of receiving an advertising signal. As a result, the terminal 10 shifts the state of the BTI/F 16 from the state in which the BT connection with the printer 100 cannot be established via the BTI/F 16 to the state in which the BT connection can be established. In this way, the terminal 10 does not transition to a state in which the BT connection can be established until the NFC connection with the printer 100 is established. For this reason, the communication load on the BTI/F 16 is reduced compared to a configuration that always maintains a state in which a BT connection can be established, that is, a state in which advertising signals are received in this embodiment.

When the terminal 10 receives the advertise signal including the device name "dv1" from the printer 100 at T34, the device confirmation screen is displayed on the display unit 12 at T40. The device confirmation screen includes the device name "dv1" in the received advertising signal and a connect button. In T42, the terminal 10 accepts the user's operation to select the connection button in the device confirmation screen, and in T44, transmits a CONNECT_IND signal to the printer 100 via the BTI/F 16. FIG.

Upon receiving the CONNECT_IND signal from the terminal 10 at T44, the printer 100 establishes a BT connection with the terminal 10 via the BTI/F 116 at T50.

In T50, the terminal 10 causes the display unit 12 to display a password input screen in response to the establishment of the BT connection in T60. The password entry screen includes the SSID "ap01" stored in the memory 34 (that is, the SSID of the wireless network to which the terminal 10 currently belongs (that is, the SSID of AP200)) and a password entry area. Therefore, the user can confirm the SSID "ap01" of the AP 200 with which the printer 100 should establish a Wi-Fi connection, and can enter the password.

When the terminal 10 accepts the input of the password "xxx" from the user at T62, the terminal 10 uses the BT connection to transmit the SSID "ap01" and the entered password "xxx" to the printer 100 at T64.

When the printer 100 receives the SSID "ap01" and the password "xxx" from the terminal 10 using the BT connection at T64, at T66 the transmission of the advertising signal is stopped. As a result, the printer 100 changes the state of the BTI/F 116 from the state in which the BT connection with the terminal 10 can be established via the BTI/F 116 to the state in which the BT connection cannot be established. In this way, the printer 100 does not have to continuously transmit the advertising signal after receiving the predetermined data (that is, the SSID "ap01" and the password "xxx" of the AP 200). Therefore, the communication load on the BTI/F 116 is reduced.

At T70, the printer 100 establishes a Wi-Fi connection with the AP 200 using the SSID "ap01" and the password "xxx". Specifically, the printer 100 performs various communications such as Probe, Authentication, Association, and 4-Way Handshake. In the process of these various communications, communications using the SSID "ap01" and password "xxx" are executed, and the AP 200 authenticates the SSID "ap01" and password "xxx". If this authentication succeeds, printer 100 can establish a Wi-Fi connection with AP 200 .

As described above, the terminal 10 can make the printer 100 belong to the wireless network to which the terminal 10 currently belongs. As a result, the terminal 10 can use the wireless network (that is, via the AP 200) to send the image data representing the image to be printed to the printer 100 and cause the printer 100 to print.

(Case B; Fig. 3)
Next, with reference to FIG. 3, the processing of case B for establishing a Wi-Fi connection between the printer 100 and the terminal 10 will be described.

T10 to T22 in FIG. 3 are the same processing as T10 to T22 in FIG. After that, at T124, the terminal 10 receives the selection of the button B2 in the selection screen from the user. In this case, the terminal 10 displays an instruction screen at T126. This instruction screen is a screen for establishing a Wi-Fi connection (that is, a WFD connection) between the printer 100 and the terminal 10 without going through the AP 200, unlike the instruction screen in FIG. The instruction screen includes a message to directly connect to the printer and a message to prompt the terminal 10 to tap (that is, bring the terminal 10 closer to the printer 100). The subsequent T28 to T34 are the same processing as T28 to T34 in FIG.

When the terminal 10 receives the SSID "pr01" and the password "yyy" from the printer 100 using the NFC connection at T32, the terminal 10 receives the SSID "pr01" at T140 without establishing a BT connection with the printer 100. and password “yyy” to establish a WFD connection with the printer 100 . Specifically, the terminal 10 performs various communications such as Probe, Authentication, Association, 4-Way Handshake, etc. with the printer 100 . In the course of these various communications, the terminal 10 transmits to the printer 100 a request signal (for example, Authentication Request, Association Request, etc.) including the SSID “pr01” as the destination. In the process of these various communications, communications using the SSID "pr01" and the password "yyy" are performed, and the printer 100 authenticates the SSID "pr01" and the password "yyy". If this authentication succeeds, the terminal 10 can establish a WFD connection with the printer 100 .

Without establishing a BT connection with the terminal 10, the printer 100 establishes a WFD connection with the terminal 10 in response to receiving the request signal including the SSID "pr01" as the destination from the terminal 10 at T140. Establish. In this case, the printer 100 stops transmitting the advertising signal at T142. As a result, the printer 100 changes the state of the BTI/F 116 from the state in which the BT connection with the terminal 10 can be established via the BTI/F 116 to the state in which the BT connection cannot be established. In this way, the printer 100 does not have to keep sending advertising signals after establishing a WFD connection with the terminal 10 . Therefore, the communication load on the BTI/F 116 is reduced.

As described above, the terminal 10 can belong to a wireless network in which the printer 100 operates as G/O without going through the AP200. As a result, the terminal 10 can use the wireless network (that is, not through the AP 200) to send the image data representing the image to be printed to the printer 100 and cause the printer 100 to print.

(Effect of this embodiment)
According to the present embodiment, the printer 100 changes the state of the BTI/F 116 when establishing an NFC connection with the terminal 10 (T30 in FIG. 2) without receiving an operation on the operation unit 122 of the printer 100 from the user. , the state in which the BT connection cannot be established with the terminal 10 is shifted to the state in which the BT connection can be established (T34). As a result, the printer 100 can establish a BT connection with the terminal 10 (T50), and can receive the SSID "ap01" and the password "xxx" of the AP 200 from the terminal 10 (T64). Therefore, the printer 100 can establish a Wi-Fi connection with the AP 200 (T70). In this manner, the user of the printer 100 does not need to operate the operation unit 122 of the printer 100 to change the state of the BTI/F 116, thereby improving convenience for the user.

In addition, the terminal 10 sets the type of the instruction screen (T26 in FIG. 2, T126 in FIG. 3) displayed on the display unit 12 when the NFC connection (T30 in FIG. 2 and T30 in FIG. ), perform different setup processes. Therefore, if the user selects a desired setup on the selection screen (T22 in FIG. 2) displayed on the terminal 10, the desired setup is executed without operating the operation unit 122 of the printer 100. be able to.

(correspondence relationship)
The printer 100 and the terminal 10 are examples of the "communication device" and the "terminal device", respectively. The NFC system and the BT system are examples of the "first standard" and the "second standard", respectively. NFCI/F118 (or NFCI/F18), BTI/F116 (or BTI/F16), Wi-FiI/F114 (or Wi-FiI/F14) are respectively "first wireless interface", "second wireless It is an example of "interface" and "third wireless interface". T30 in FIG. 2 or T30 in FIG. 3 is an example of "first wireless connection". T50 in FIG. 2 is an example of "second wireless connection". The wireless network in which the AP 200 operates as a master station, SSID "ap01" and password "xxx" are examples of "first wireless network", "first SSID" and "first password", respectively. The Wi-Fi connection of T70 in FIG. 2 and the WDF connection of T140 in FIG. 3 are examples of the "first Wi-Fi connection" and the "second Wi-Fi connection", respectively. The wireless network in which the printer 100 operates as G/O, SSID "pr01", and password "yyy" are examples of "second wireless network", "second SSID", and "second password", respectively. .

The instruction screen at T26 in FIG. 2 and the instruction screen at T126 in FIG. 3 are examples of the "first screen" and the "second screen", respectively. The device name “dv1” and the device confirmation screen are examples of the “identification information” and the “selection screen”, respectively.

The correspondence regarding "communication device" is as follows. T34 and T66 in FIG. 2 are examples of processing implemented by the "first transition section" and the "second transition section", respectively. T64 and T70 are examples of processing implemented by the "setting information receiving unit" and the "first establishing unit", respectively. T140 and T142 in FIG. 3 are examples of processing implemented by the "second establishment unit" and the "third transition unit", respectively.

The correspondence regarding "terminal device" is as follows. T26, T34, T40, and T64 in FIG. 2 are examples of processing implemented by the "first display control unit", the "transition unit", the "third display control unit", and the "setting information transmission unit", respectively. is. T32, T126, and T140 in FIG. 3 are examples of processing implemented by the "receiving section," "second display control section," and "establishment processing executing section," respectively.

Although specific examples of the present invention have been described in detail above, 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 T62, instead of transmitting the SSID "ap01" and password "xxx" of the AP 200 of the wireless network to which the terminal 10 currently belongs to the printer 100, the terminal 10 The SSID and password of the AP of the wireless network that is not connected to the printer 100 may be sent to the printer 100 . The AP may be an AP of a wireless network to which the terminal 10 has belonged in the past, or may be an AP of a wireless network to which the terminal 10 has never belonged. Generally speaking, the access point of the “first wireless network” is not limited to the access point 200 of the wireless network to which the terminal 10 currently belongs.

(Modification 2) The 'second standard' of the 'communication device' and 'terminal device' is not limited to the Bluetooth (registered trademark) standard, and may be, for example, the Zigbee (registered trademark) standard. In this modification, the "first state" may be a state in which the I/F for executing wireless communication conforming to the Zigbee standard is sleeping, and the "second state" may be a state in which the I/F is sleeping. /F may be in a non-sleep state.

(Modification 3) Instead of executing T34 in FIG. 2, that is, instead of the printer 100 transmitting the advertising signal, the terminal 10 may transmit the advertising signal. In this case, the printer 100 shifts from the state of not executing the scanning of the advertising signal to the state of executing the scanning. Generally speaking, the “first state” and “second state” of the “communication device” may be the state of not receiving the advertising signal and the state of receiving the advertising signal, respectively. Also, the “first state” and “second state” of the “terminal device” may be a state of not transmitting an advertising signal and a state of transmitting an advertising signal, respectively.

(Modification 4) The processing of T66 in FIG. 2 may be omitted. That is, the printer 100 may continue to transmit the advertising signal after establishing the BT connection with the terminal 10 . In this modified example, the “second transition unit” of the “communication device” can be omitted.

(Variation 5) After receiving the SSID “ap01” and password “xxx” of the AP 200 at T64 and before stopping the advertising signal at T66, the printer 100 establishes a Wi-Fi connection with the AP 200. may be established. Generally speaking, the 'first establishing part' of the 'communication device' establishes a first connection with the access point before the operational state of the second wireless interface transitions from the second state to the first state. may establish a Wi-Fi connection.

(Modification 6) In the above embodiment, when the NFC connection with the terminal 10 is established, the printer 100 shifts to WFD G/O at T31. Alternatively, the printer 100 may activate a so-called Soft AP. In another modification, terminal 10 may operate as G/O. In this case, the printer 100 knows in advance the SSID and password of the wireless network in which the terminal 10 operates as G/O (that is, stored in the application 38), and when receiving an Invitation Request from the terminal 10, A WFD connection with the terminal 10 is established using the SSID and the password. In this modification, Invitation Request is an example of the "request signal". Also, in this modification, the "first wireless interface" does not have to use the first wireless connection to transmit the second SSID and the second password to the terminal device. In yet another variation, terminal 10 and printer 100 may perform G/O negotiation to determine which will be the G/O. In this case as well, when the printer 100 itself decides to become the G/O, it suffices to establish a WFD connection with the terminal 10 by executing various communications similar to those in the above embodiment. .

(Modification 7) The process of T142 in FIG. 3 may be omitted. That is, the printer 100 may continue to transmit the advertising signal after establishing the WFD connection with the terminal 10 . In this modified example, the “third transition unit” of the “communication device” can be omitted.

(Modification 8) The "first standard" is not limited to the NFC standard, and may be, for example, the Transfer Jet standard.

(Modification 9) The processing of T22 to T26 in FIG. 2 may be omitted. In this case, the terminal 10 can execute the processing after T28, and cannot execute the processing of FIG. 3 (that is, the processing of establishing a WFD connection with the printer 100). In this modification, the “first display control unit”, the “second display control unit”, and the “receiving unit” of the “terminal device” can be omitted.

(Modification 10) The processing of T60 to T62 may be omitted. In this case, the terminal 10 acquires the SSID "ap01" and the password "xxx" from the memory 34, and transmits the acquired SSID "ap01" and the password "xxx" to the printer 100 at T64. According to this configuration, the user does not have to enter the password "xxx" into the terminal 10. FIG. In this modified example, the "third display control unit" of the "terminal device" can be omitted.

(Modification 11) The "communication device" may not be a printer, but may be another device such as a scanner, a facsimile machine, a PC, or a server.

(Modification 12) In the above embodiment, each process in FIGS. 2 and 3 is implemented by software, but at least one of these processes may be implemented by hardware such as a logic circuit.

In addition, the technical elements described in this specification or in the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques exemplified in this specification or drawings achieve multiple purposes at the same time, and achieving one of them has technical utility in itself.

2: communication system, 10: mobile terminal, 12: display unit, 14: Wi-Fi I/F, 16: BTI/F, 18: NFCI/F, 30: control unit, 32: CPU, 34: memory, 36: OS program, 38: print application, 100: printer, 112: display unit, 114: Wi-Fi I/F, 116: BTI/F, 118: NFCI/F, 120: print execution unit, 122: operation unit, 130: Control unit, 132: CPU, 134: memory, 136: OS program

Claims (20)

A communication device,
a first wireless interface for performing wireless communication according to a first standard different from the Wi-Fi standard;
a second wireless interface for performing wireless communication according to a second standard different from the first standard and the Wi-Fi standard;
a third wireless interface for performing wireless communication according to the Wi-Fi standard;
a first wireless interface for shifting an operation state of the second wireless interface from a first state to a second state when a first wireless connection is established with a terminal device via the first wireless interface; In the transition unit, the first state is a state in which a second wireless connection with the terminal device cannot be established via the second wireless interface, and the second state is the second wireless interface. the first transition unit in a state capable of establishing the second wireless connection with the terminal device via two wireless interfaces;
the second wireless connection with the terminal device via the second wireless interface in response to transition of the operating state of the second wireless interface from the first state to the second state; is established, the first SSID (abbreviation of Service Set Identifier) of the first wireless network from the terminal device via the second wireless interface using the second wireless connection and a setting information receiving unit that receives the first password;
when the first SSID and the first password are received from the terminal device, using the first SSID and the first password via the third wireless interface, a first establishing unit that establishes a first Wi-Fi connection with an access point that operates as a master station of the first wireless network;
A communication device comprising: The second standard is the Bluetooth (registered trademark) standard,
the first state is a state in which the second wireless interface does not execute communication of the advertising signal, or a state in which the second wireless connection is not established even if communication of the advertising signal is executed;
2. The communication device according to claim 1, wherein said second state is a state in which said second wireless connection can be established in response to communication of said advertising signal by said second wireless interface. the first state is a state in which the second radio interface does not transmit the advertising signal;
3. The communication device according to claim 2, wherein said second state is a state in which said second wireless interface transmits said advertising signal. The communication device further
a second method for shifting the operating state of the second wireless interface from the second state to the first state when the first SSID and the first password are received from the terminal device; 4. A communication device according to any one of claims 1 to 3, comprising a transition unit. The first establishing unit establishes the first Wi-Fi connection with the access point after the operating state of the second wireless interface transitions from the second state to the first state. 5. A communication device according to claim 4. The communication device further
From the terminal device without establishing the second wireless connection with the terminal device after the operating state of the second wireless interface is shifted from the first state to the second state, When a request signal requesting establishment of a second Wi-Fi connection is received via the third wireless interface, the second communication with the terminal device via the third wireless interface A communication device according to any one of claims 1 to 5, comprising a second establishing unit for establishing a Wi-Fi connection. The first wireless interface uses the first wireless connection to transmit a second SSID and a second password of a second wireless network in which the communication device operates as a master station to the terminal device. death,
7. The communication device of claim 6, wherein said second SSID and said second password are utilized by said terminal device to establish said second Wi-Fi connection with said communication device. The communication device further
when the second Wi-Fi connection with the terminal device is established via the third wireless interface, the operating state of the second wireless interface is changed from the second state to the first state 8. A communication device according to claim 6 or 7, comprising a third transition unit for transitioning between states. 9. The communication device according to any one of claims 1 to 8, wherein said first standard is a Near Field Communication standard. A computer program for a terminal device, comprising:
The terminal device
a first wireless interface for performing wireless communication according to a first standard different from the Wi-Fi standard;
a second wireless interface for performing wireless communication according to a second standard different from the first standard and the Wi-Fi standard;
a computer;
The computer program causes the computer to:
A second wireless connection is established with the communication device via the second wireless interface in response to establishing a first wireless connection with the communication device via the first wireless interface. In the case, using the second wireless connection, via the second wireless interface, the first SSID (abbreviation of Service Set Identifier) of the first wireless network according to the Wi-Fi standard and a setting information transmission unit configured to transmit a first password to the communication device, wherein the first SSID and the first password are an access point that operates as a master station of the first wireless network; A computer program used by the communication device to function as the setting information transmitter to establish a first Wi-Fi connection. The terminal device further comprises a display unit,
The computer program further causes the computer to:
functioning as a first display control unit that causes the display unit to display a first screen for establishing the first Wi-Fi connection between the communication device and the access point;
In a state where the first screen is displayed on the display unit, the setting information transmission unit transmits the 11. The computer according to claim 10, wherein when a second wireless connection is established, said second wireless connection is used to transmit said first SSID and said first password to said communication device. program. The terminal device further
a display unit;
a third wireless interface according to the Wi-Fi standard;
The computer program further causes the computer to:
a second display control unit that causes the display unit to display a second screen for establishing a second Wi-Fi connection not via the access point between the communication device and the terminal device;
When the first wireless connection with the communication device is established in a state where the second screen is displayed on the display unit, the second wireless connection with the terminal device is established. an establishment process execution unit that executes a process for establishing the second Wi-Fi connection with the communication device via the third wireless interface without
12. A computer program according to claim 10 or 11, functioning as a The computer program further causes the computer to:
A second SSID and a second password of a second wireless network in which the communication device operates as a master station from the communication device, using the first wireless connection, via the first wireless interface. function as a receiver for receiving and
12. The establishment processing execution unit uses the second SSID and the second password to execute processing for establishing the second Wi-Fi connection with the communication device. the computer program described in . The second standard is the Bluetooth (registered trademark) standard,
14. A computer according to any one of claims 10 to 13, wherein said second wireless connection is established with said communication device after said second wireless interface has carried out communication of an advertising signal with said communication device. program. 15. The computer program product of claim 14, wherein the second wireless connection is established with the communication device after the second wireless interface receives the advertising signal from the communication device. The terminal device further comprises a display unit,
The advertising signal includes identification information that identifies the communication device,
The computer program further causes the computer to:
functioning as a third display control unit that causes the display unit to display a selection screen containing the identification information when the second wireless interface receives the advertising signal from the communication device;
16. The computer program product of claim 15, wherein said second wireless connection with said communication device is established when said identification information is selected by a user in said selection screen. The computer program further causes the computer to:
a transition unit that transitions an operation state of the second wireless interface from a first state to a second state when the first wireless connection with the communication device is established, wherein the first The state is a state in which the second wireless connection with the communication device cannot be established via the second wireless interface, and the second state is the terminal via the second wireless interface. 17. A computer program product according to any one of claims 10 to 16, acting as said transition unit, being ready to establish said second wireless connection with a device. The second standard is the Bluetooth (registered trademark) standard,
the first state is a state in which the second wireless interface does not execute communication of the advertising signal, or a state in which the second wireless connection is not established even if communication of the advertising signal is executed;
18. The computer program according to claim 17, wherein said second state is a state in which said second wireless connection can be established in response to said second wireless interface performing communication of said advertising signal. the first state is a state in which the second wireless interface does not receive the advertising signal or a state in which the second wireless connection is not established even if the advertising signal is received;
19. The computer program according to claim 18, wherein said second state is a state in which said second wireless interface can establish said second wireless connection in response to receiving said advertising signal. A terminal device,
a first wireless interface for performing wireless communication according to a first standard different from the Wi-Fi standard;
a second wireless interface for performing wireless communication according to a second standard different from the first standard and the Wi-Fi standard;
A second wireless connection is established with the communication device via the second wireless interface in response to establishing a first wireless connection with the communication device via the first wireless interface. In the case, using the second wireless connection, via the second wireless interface, the first SSID (abbreviation of Service Set Identifier) of the first wireless network according to the Wi-Fi standard and a setting information transmission unit configured to transmit a first password to the communication device, wherein the first SSID and the first password are an access point that operates as a master station of the first wireless network; the configuration information transmitter utilized by the communication device to establish a first Wi-Fi connection;
A terminal device.

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