JP6737353B2 - Communication equipment - Google Patents

Description

The present specification discloses a communication device including a wireless interface.

Patent Document 1 discloses an NFC interface for executing NFC (Near Field Communication) wireless communication and a wireless LAN interface for executing WFD (Wi-Fi Direct) wireless communication. A multi-function device including the above is disclosed. The multi-function device operates in the WFD Group Owner state (hereinafter, referred to as “G/O state”) to form a WFD wireless network. The multi-function device transmits the wireless setting of the wireless network to the mobile terminal via the NFC interface. As a result, since the mobile terminal participates in the wireless network, the multi-function device receives the print data from the mobile terminal via the wireless LAN interface using the wireless network.

JP, 2013-214804, A

There may occur a situation where the wireless settings of the wireless network should not be transmitted to the mobile terminal via the NFC interface, but Patent Document 1 does not consider such a situation at all. The present specification provides a technique in which a communication device can transmit the transmission target data in the memory of the wireless interface to an external device in an appropriate situation.

A communication device disclosed by the present specification includes a first wireless interface and a control unit, the first wireless interface according to a first memory and a writing instruction obtained from the control unit. A write process for writing transmission target data to be transmitted to an external device in the first memory, and a transmission process for transmitting the transmission target data written in the first memory to the external device And a second state in which the processor can execute the transmission process and a second state in which the processor cannot execute the transmission process. The control unit operates in any one of a plurality of operating states, the control unit monitors the change of the state of the communication device between an error state and a non-error state, and the control unit is a predetermined unit. When the control unit should start the predetermined process due to the state of the communication device changing between the error state and the non-error state in the first period in which the process is not executed, A first changing unit for changing the operating state of the first wireless interface from the first state to the second state; and changing the operating state of the first wireless interface to the second state In a second period after the operation, the process execution unit executing the predetermined process in the second period in which the operation state of the first wireless interface is the second state; A second changing unit that changes the operating state of the first wireless interface from the second state to the first state in response to the completion of the processing.
Further, the communication device disclosed in the present specification includes a first wireless interface and a control unit. The first wireless interface includes a first memory and a processor. The processor writes the transmission target data to be transmitted to the external device in the first memory according to the write instruction acquired from the control unit, and the transmission target data written in the first memory to the external device. And a transmission process to be transmitted to. The first wireless interface operates in any one of a plurality of operating states including a first state in which the processor can execute the transmission process and a second state in which the processor cannot execute the transmission process. To do. The control unit changes the operating state of the first wireless interface from the first state to the second state when the control unit should start the predetermined process in the first period during which the control unit does not execute the predetermined process. And a second changing period of the first wireless interface and the second wireless interface after the operating state of the first wireless interface is changed to the second state, and the operating state of the first wireless interface is the second state. In a second period, a process execution unit that executes a predetermined process, and a second state that changes the operation state of the first wireless interface from the second state to the first state in response to the completion of the predetermined process. And a changing unit.

According to the above configuration, in a situation where the predetermined process is executed, that is, in a situation where the data in the first memory of the first wireless interface should not be transmitted to the external device, the data is not transmitted to the external device. On the other hand, in a situation where the predetermined process is not executed, the transmission target data in the first memory of the first wireless interface may be transmitted to the external device. Therefore, the communication device can transmit the transmission target data in the first memory of the first wireless interface to the external device in an appropriate situation.

In the second state, even if the processor receives a request signal for establishing a communication session with the external device from the external device, the processor does not transmit a response signal to the request signal and does not establish a communication session with the external device. Therefore, the transmission process may not be executed. With this configuration, it is possible to suppress the data in the first memory of the first wireless interface from being transmitted to the external device in the situation where the predetermined process is executed.

The first wireless interface may further include a second memory. When the first value is stored in the second memory, the processor transmits the response signal to the request signal even when receiving the request signal for establishing the communication session with the external device from the external device. Alternatively, the transmission process may not be executed by establishing the communication session with the external device, and the transmission process may be executable when the first value is not stored in the second memory. The first changing unit supplies the processor with a first storage instruction for storing the first value in the second memory when the control unit should start a predetermined process in the first period. Good. The second changing unit may supply the processor with a first deletion instruction for deleting the first value from the second memory in response to the completion of the predetermined process. With this configuration, since the first storage instruction is supplied to the processor, the operating state of the first wireless interface can be changed from the first state to the second state. Further, since the first deletion instruction is supplied to the processor, the operating state of the first wireless interface can be changed from the second state to the first state.

The processor can execute the transmission process when the first value is not stored in the second memory and the second value different from the first value is stored in the second memory. May be The first storage instruction may be an instruction for storing the first value in the second memory instead of the second value. The first deletion instruction may be an instruction for storing the second value in the second memory instead of the first value.

The first memory is a non-volatile memory and may include a header block and a data block in which the transmission target data is to be written. The second memory may be a volatile memory. When the third value is stored in the header block, the processor does not execute the transmission process by not reading the transmission target data from the data block even when the communication session with the external device is established, and the header is not executed. The transmission process may be executable when the third value is not stored in the block. The first changing unit may supply the processor with a second storage instruction for storing the third value in the header block when the control unit should start the predetermined process in the first period. .. The second changing unit may supply the processor with a second deletion instruction for deleting the third value from the header block in response to the completion of the predetermined process. According to this configuration, for example, when the third value is stored in the header block in the first memory and the first value is stored in the second memory, the power supply of the communication device is turned on. When turned off, the first value is deleted from the second memory, which is a volatile memory, but the third value is not deleted from the header block in the first memory, which is a nonvolatile memory. Therefore, it is possible to prevent the transmission target data from being transmitted to the external device after the power of the communication device is turned off.

The first changing unit may supply the second storage instruction to the processor after supplying the first storage instruction to the processor when the control unit should start the predetermined processing in the first period. .. The second changing unit may supply the first deletion instruction to the processor after supplying the second deletion instruction to the processor in response to the completion of the predetermined process. With this configuration, the first and second storage instructions can be supplied to the processor in an appropriate order. Also, the first and second delete instructions may be provided to the processor in the proper order.

In the second state, the processor does not have to execute the transmission processing by establishing the communication session with the external device but not reading the transmission target data from the first memory. With this configuration, it is possible to suppress the data in the first memory of the first wireless interface from being transmitted to the external device in the situation where the predetermined process is executed.

In the second state, the processor may further transmit a packet that does not include transmission target data to the external device when the communication session with the external device is established.

The first memory may include a header block and a data block in which the transmission target data is to be written. When the third value is stored in the header block, the processor does not execute the transmission process by not reading the transmission target data from the data block even when the communication session with the external device is established, and the header is not executed. The transmission process may be executable when the third value is not stored in the block. The first changing unit may supply the processor with a second storage instruction for storing the third value in the header block when the control unit should start the predetermined process in the first period. .. The second changing unit may supply the processor with a second deletion instruction for deleting the third value from the header block in response to the completion of the predetermined process. According to this configuration, since the second storage instruction is supplied to the processor, the operating state of the first wireless interface can be changed from the first state to the second state. Moreover, since the second deletion instruction is supplied to the processor, the operating state of the first wireless interface can be changed from the second state to the first state.

The processor may execute the transmission process when the third value is not stored in the header block and the fourth value different from the third value is stored in the header block. Good. The second storage instruction may be an instruction for storing the third value in the header block instead of the fourth value. The second deletion instruction may be an instruction for storing the fourth value in the header block instead of the third value.

The predetermined process may include a process for supplying the processor with a write instruction for changing the content of the transmission target data in the first memory. With this configuration, it is possible to prevent the data in the first memory of the first wireless interface from being transmitted to the external device in the situation where the predetermined process for supplying the write instruction to the processor is executed. it can.

The communication device may further include a second wireless interface different from the first wireless interface. The transmission target data may include data for establishing a wireless connection via the second wireless interface with an external device. The predetermined process may include a process for establishing a wireless connection via the second wireless interface with an external device. According to this configuration, the data in the first memory of the first wireless interface is transmitted to the external device in a situation where a predetermined process for establishing a wireless connection with the external device via the second wireless interface is executed. Can be suppressed.

The communication device may further include an operation unit including a button for switching the power supply of the communication device between an ON state and an OFF state. The predetermined process may include a process for switching the power of the communication device from the ON state to the OFF state due to the operation unit being operated by the user while the power of the communication device is in the ON state. Good. According to this configuration, the data in the first memory of the first wireless interface is transmitted to the external device in the situation where the predetermined process for switching the power supply of the communication device from the ON state to the OFF state is executed. Can be suppressed.

A control method, a computer program, and a computer-readable recording medium that stores the computer program for realizing the communication device are also novel and useful. A communication system including the above communication device and an external device is also new and useful.

1 shows a configuration of a communication system. The flowchart of the process at the time of power supply ON of CPU is shown. The flowchart of the monitoring process of CPU is shown. 7 shows a flowchart of a process of a processor of an NFC interface. The sequence diagram of the case A to which the write instruction is supplied is shown. The sequence diagram of the case B in which a connection process is performed is shown. The sequence diagram of case C in which the power-off process is executed is shown. 9 shows a flowchart of the processing of the processor of the NFC interface of the second embodiment. The sequence diagram of the case D of 2nd Example is shown. The sequence diagram of the case E of 3rd Example is shown.

(First embodiment)
(Structure of communication system 2)
As shown in FIG. 1, the communication system 2 includes a printer PR and a plurality of mobile terminals PT1 and PT2. Each of the devices PR, PT1, and PT2 has a wireless communication according to the Wi-Fi system (hereinafter referred to as "Wi-Fi communication") and a wireless communication according to the NFC (abbreviation of Near Field Communication) (hereinafter, " Called "NFC communication").

(Structure of printer PR)
The printer PR is a peripheral device (that is, a peripheral device such as the mobile terminals PT1 and PT2) that can execute a printing function. The printer PR includes an operation unit 12, a display unit 14, a print execution unit 16, a wireless LAN (abbreviation of Local Area Network) interface 20, an NFC interface 30, and a control unit 40. Each of the units 12 to 40 is connected to a bus line (reference numeral omitted). Hereinafter, the interface is referred to as “I/F”.

The operation unit 12 includes a plurality of buttons including a power button PB. The user can give various instructions to the printer PR by operating the operation unit 12. The power button PB is a button for switching the power of the printer PR between an ON state and an OFF state. The power button PB is a so-called soft button. Therefore, when the power button PB is operated while the power of the printer PR is ON, the control unit 40 can execute various processes for switching the power of the printer PR from the ON state to the OFF state. After that, the power of the printer PR is switched from the ON state to the OFF state. The display unit 14 is a display for displaying various information. The print execution unit 16 is a printing mechanism such as an inkjet method or a laser method.

The wireless LAN I/F 20 is a wireless I/F for executing Wi-Fi communication according to the Wi-Fi system. The Wi-Fi method is in accordance with, for example, the IEEE (abbreviation of The Institute of Electrical and Electronics Engineers, Inc.) 802.11 standard, and a standard pursuant thereto (for example, 802.11a, 11b, 11g, 11n, etc.). , A wireless communication system for executing wireless communication. The wireless LAN I/F 20 particularly supports the WFD (abbreviation of Wi-Fi Direct) method. The WFD method is a wireless communication method described in a standard document “Wi-Fi Peer-to-Peer (P2P) Technical Specification Version 1.1” created by Wi-Fi Alliance.

The NFC I/F 30 is a wireless I/F for executing NFC communication (that is, a kind of so-called short-range wireless communication) according to the NFC method. The NFC method is, for example, a wireless communication method based on the international standard of ISO/IEC 21481 or 18092. As the types of I/F for executing NFC communication, an I/F called an NFC Forum device (NFC Forum Device) and an I/F called an NFC Forum Tag are known. The NFC I/F 30 is an NFC forum tag and functions as an NFC IC tag.

The NFC I/F 30 includes a processor 32, an SRAM 34, and an NVRAM 36. The processor 32 is communicable with the control unit 40, and executes a writing process for writing the transmission target data SD to be transmitted to the mobile terminal in the NVRAM 36 according to the writing instruction acquired from the control unit 40. Further, the processor 32 executes the following transmission processing when receiving a Polling signal from a mobile terminal (eg PT1). That is, in the transmission process, the processor 32 first transmits a response signal to the Polling signal to the mobile terminal to establish a communication session with the mobile terminal. Then, the processor 32 reads out the transmission target data SD previously written in the NVRAM 36 from the NVRAM 36 before the communication session with the mobile terminal is established, and transmits the transmission target data SD to the mobile terminal using the communication session. To do.

The processor 32 uses the power supplied from the power source of the printer PR and executes the above-described writing process according to the writing instruction acquired from the control unit 40. Therefore, the processor 32 cannot execute the above-mentioned writing process when the power of the printer PR is OFF. Further, when the power of the printer PR is in the ON state, the processor 32 uses the power supplied from the power of the printer PR to execute the above transmission processing, and the power of the printer PR is in the OFF state. Then, the transmission process described above is executed by using the electromotive force caused by the induced current generated between the NFC I/F 30 and the NFC I/F of the mobile terminal. Therefore, the processor 32 can execute the above-mentioned transmission processing even in a situation where the power of the printer PR is in the OFF state.

The SRAM 34 is a volatile memory and stores the prohibition flag PF. The prohibition flag PF is a flag indicating whether to allow or prohibit the transmission of the response signal to the Polling signal, and has a value of either “0” or “1”. Specifically, when the processor 32 receives the Polling signal from the mobile terminal in the state where “0” is stored as the value of the prohibition flag PF, the processor 32 transmits a response signal to communicate with the mobile terminal. Establish a session. That is, the processor 32 can execute the transmission process when “0” is stored as the value of the prohibition flag PF. Further, the processor 32 does not transmit a response signal and does not establish a communication session with the mobile terminal even if a Polling signal is received from the mobile terminal in a state where “1” is stored as the value of the prohibition flag PF. .. As a result, the transmission target data SD is not transmitted to the mobile terminal. That is, the processor 32 cannot execute the transmission process when “1” is stored as the value of the prohibition flag PF. Since the SRAM 34 is a volatile memory, when the power of the printer PR is switched from the ON state to the OFF state, all the data indicating “1” in the SRAM 34 is changed to “0”. That is, the value of the prohibition flag PF is changed to "0".

The NVRAM 36 is a non-volatile memory and includes a header block HB and a data block DB. The header block HB is a block for storing header information, and stores, for example, a writing flag WF. The writing flag WF is used in the second and third embodiments described later. The data block DB stores the transmission target data SD to be transmitted to the mobile terminal.

Here, the difference between the wireless LAN I/F 20 and the NFC I/F 30 will be described. 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 faster than the communication speed of the wireless communication via the NFC I/F 30 (for example, the maximum communication speed is 100 to 424 Kbps). .. In addition, the frequency of the carrier wave in the wireless communication via the wireless LAN I/F 20 (for example, 2.4 GHz band or 5.0 GHz band) is the frequency of the carrier wave in the wireless communication via the NFC I/F 30 (for example, 13.56 MHz band). different. Further, the maximum distance (for example, about 100 m at the maximum) at which the wireless communication via the wireless LAN I/F 20 can be executed is greater than the maximum distance (for example, at about 10 cm at the maximum) at which the wireless communication via the NFC I/F 30 can be executed. Is also big.

The control unit 40 includes a CPU 42 and a memory 44. The CPU 42 is a processor that executes various processes according to the program PG stored in the memory 44. The memory 44 is composed of a RAM, a ROM and the like.

(Configuration of mobile terminals PT1 and PT2)
Each of the mobile terminals PT1 and PT2 is a portable terminal device such as a mobile phone (for example, a smartphone), a PDA, a notebook PC, a tablet PC, a portable music reproducing device, a portable moving image reproducing device, or the like. Each of the mobile terminals PT1 and PT2 includes a wireless LAN I/F (not shown) and can execute Wi-Fi communication. In particular, each mobile terminal PT1, PT2 supports the WFD system. In addition, each of the mobile terminals PT1 and PT2 includes an NFC I/F (not shown), and can execute NFC communication. The NFC I/F of each mobile terminal PT1, PT2 is an NFC forum device.

(Process when CPU 42 is powered on; FIG. 2)
Next, with reference to FIG. 2, a power-on process executed by the CPU 42 of the control unit 40 will be described. When the power button PB is operated by the user while the power of the printer PR is off, the CPU 42 executes the power-on process.

In S10, the CPU 42 determines whether the printer PR is in an error state or a non-error state. The error state is a state in which the printer PR cannot execute the print function, and the non-error state is a state in which the printer PR can execute the print function. Specifically, the CPU 42 acquires the output value of each error sensor (not shown). Each of the error sensors described above includes, for example, a sensor for detecting the remaining amount of consumable items (toner, ink, etc.) used for printing, a sensor for detecting the presence or absence of paper jam, and the like. Then, the CPU 42 determines that the printer PR is in an error state when the output value of any of the error sensors indicates an error (for example, the remaining amount of consumables is zero, paper jam, etc.) (S10). If YES, the process proceeds to S20, and if none of the error sensor output values indicates an error, it is determined that the printer PR is in the non-error state (NO in S10), and the process proceeds to S30.

In S20, the CPU 42 acquires from the memory 44 an error URL (abbreviation of Uniform Resource Locator) corresponding to the error currently occurring in the printer PR. Each error URL corresponding to each error is stored in the memory 44 in advance. Each error URL indicates a position in a server (not shown) installed on the Internet by the vendor of the printer PR. The server stores a web page showing a method for eliminating each error. Therefore, for example, the mobile terminal can display the web page by receiving the error URL from the printer PR and accessing the server in accordance with the error URL. As a result, the user of the mobile terminal can eliminate the error currently occurring in the printer PR. When S20 ends, the process proceeds to S40.

In S30, the CPU 42 prepares a wireless profile. When the printer PR receives the Polling signal from the portable terminal, the printer PR operates in the WFD Group Owner state (hereinafter, referred to as “G/O state”) to form a WFD wireless network. The wireless profile prepared in S30 is information to be used in the wireless network. That is, the wireless profile prepared in S30 is information to be used in a wireless network that can be formed by the printer PR in the future. Therefore, for example, when the mobile terminal receives the wireless profile from the printer PR, it can join the wireless network. As a result, for example, the mobile terminal can send the print data to the printer PR using the above wireless network. The wireless profile prepared in S30 includes SSID (abbreviation of Service Set Identifier), authentication method, encryption method, password and the like. The CPU 42 prepares the SSID and password by randomly selecting a character string. Further, the CPU 42 prepares a predetermined authentication method and encryption method. The CPU 42 stores the wireless profile in the memory 44. Here, when the old wireless profile is already stored in the memory 44, the CPU 42 deletes the wireless profile from the memory 44 and stores the new wireless profile prepared in S30 in the memory 44. When S30 ends, the process proceeds to S40.

In S40, the CPU 42 changes the value of the prohibition flag PF in the SRAM 34 of the NFC I/F 30. At the time when the power of the printer PR is changed from the OFF state to the ON state, the prohibit flag PF in the SRAM 34 shows the value “0”. In S40, the CPU 42 supplies the NFC I/F 30 (that is, the processor 32) with a PF change instruction for storing “1” in place of “0” as the value of the inhibition flag PF in the SRAM 34 of the NFC I/F 30. .. As a result, the processor 32 changes the value of the prohibition flag PF in the SRAM 34 from “0” to “1” (YES in S110 of FIG. 4, see S112). As a result, even if the Polling signal is received from the mobile terminal, the response signal is not transmitted and the communication session with the mobile terminal is not established.

In S42, the CPU 42 executes a write instruction supply process of supplying a write instruction to the NFC I/F 30. In S42 executed through S20, the CPU 42 supplies the NFC I/F 30 with a write instruction including the error URL acquired in S20. Further, in S42 executed after S30, the CPU 42 supplies the NFC I/F 30 with a write instruction including the wireless profile prepared in S30. As a result, the processor 32 writes (that is, stores) the information (that is, the error URL or the wireless profile) included in the write instruction in the data block DB as the transmission target data SD. When the old transmission target data SD has already been written in the data block DB, the processor 32 deletes the old transmission target data SD from the data block DB and sets new transmission target data included in the write instruction. Write SD to data block DB.

In S44, the CPU 42 restores the value of the prohibition flag PF in the SRAM 34 to the original value in response to the completion of the write instruction supply process. Specifically, the CPU 42 supplies the NFC I/F 30 with a PF return instruction for storing “0” instead of “1” as the value of the prohibition flag PF in the SRAM 34 of the NFC I/F 30. As a result, the processor 32 changes the value of the prohibition flag PF in the SRAM 34 from "1" to "0" (YES in S120 of FIG. 4, see S122). As a result, when the Polling signal is received from the mobile terminal, the response signal is transmitted and the communication session with the mobile terminal is established.

In S50, the CPU 42 starts a monitoring process (see FIG. 3 described later). When S50 ends, the process of FIG. 2 ends.

As described above, after the value of the prohibition flag PF is changed to "1" in S40, the write instruction supply process is executed in S42. The reason is as follows. If the transmission process in which the data in the data block DB is transmitted from the NFC I/F 30 to the mobile terminal is executed while the write process is being executed in the NFC I/F 30 according to the write instruction, the following event will occur. Can occur. That is, before all of the transmission target data SD is written to the data block DB according to the write instruction, only some data (that is, some written data) of the transmission target data SD is transmitted to the mobile terminal. Can be done. In this case, since the mobile terminal cannot execute the process according to the part of the data, it acquires unnecessary data. In order to avoid this, in the present embodiment, the write instruction supply process is performed after the value of the prohibition flag PF is changed to “1”, that is, after the NFC I/F 30 becomes incapable of executing the transmission process. Is executed. As described above, according to the present embodiment, the printer PR can suppress the transmission of incomplete data (that is, unnecessary data) to the mobile terminal.

(Monitoring process of CPU 42; FIG. 3)
Subsequently, the monitoring process executed by the CPU 42 of the control unit 40 will be described with reference to FIG. The monitoring process starts in S50 of FIG. 2, and the monitoring steps of S60, S70, S80, and S90 are sequentially executed.

In S60, the CPU 42 monitors that the printer PR changes from the non-error state to the error state. Specifically, the CPU 42 determines YES in S60 when the output value of any error sensor changes from a state in which the output value does not indicate an error to a state in which the output value of any error sensor indicates an error. In this case, in S62, the CPU 42 acquires from the memory 44 the error URL corresponding to the error currently occurring in the printer PR. S62 is the same as S20 of FIG. When S62 ends, the process proceeds to S64.

In S70, the CPU 42 monitors that the printer PR changes from the error state to the non-error state. Specifically, the CPU 42 determines YES in S70 when the output value of any error sensor changes from a state indicating an error to a state in which the output value of any error sensor does not indicate an error. In this case, in S72, the CPU 42 prepares a wireless profile. S72 is the same as S30 of FIG. When S72 ends, the process proceeds to S64.

S64 to S68 are the same as S40 to S44 of FIG. Therefore, the printer PR can suppress the transmission of incomplete data to the mobile terminal. When S68 ends, the process returns to S60.

In S80, the CPU 42 monitors whether a specific connection request is received from the mobile terminal via the wireless LAN I/F 20. The specific connection request is a Probe Request, which is prepared in SSID in the wireless profile currently stored in the memory 44 (hereinafter referred to as “current wireless profile”), that is, in S30 of FIG. 2 or S72 of FIG. SSID in the current wireless profile. As described above, the printer PR shifts to the G/O state when receiving the Polling signal from the mobile terminal. The specific connection request is a request received when the printer PR is in the G/O state. When receiving the specific connection request from the mobile terminal, the CPU 42 determines YES in S80, and proceeds to S82.

In S82, the CPU 42 supplies the PF change instruction to the NFC I/F 30. S82 is the same as S40 of FIG.

In S83, the CPU 42 executes a connection process for establishing a wireless connection with the mobile terminal (hereinafter referred to as “target mobile terminal”) that is the transmission source of the specific connection request in S80. Specifically, the CPU 42 transmits a response signal (ie, Probe Response) to the specific connection request to the target mobile terminal via the wireless LAN I/F 20. Further, the CPU 42 executes communication such as Provision Discovery Request/Response, Association Request/Response, Authentication Request/Response, and 4-Way Handshake via the wireless LAN I/F 20. In this process, each information (eg, authentication method, encryption method, password, etc.) included in the current wireless profile is transmitted from the target mobile terminal to the printer PR, and the printer PR uses each information to target mobile phone. Perform terminal authentication. When the authentication of the target mobile terminal is successful, the printer PR establishes a wireless connection via the wireless LAN I/F 20 with the target mobile terminal and uses the WFD wireless network in which the current wireless profile is used. Wireless network”). The target wireless network is a wireless network in which the printer PR operates in the W/FD G/O state and the target mobile terminal operates in the WFD client state.

In S84, the CPU 42 supplies a PF return instruction to the NFC I/F 30. S84 is the same as S44 of FIG.

In S85, the CPU 42 executes print processing. Specifically, the CPU 42 first receives print data representing an image to be printed from the target mobile terminal via the wireless LAN I/F 20 using the target wireless network. Then, the CPU 42 supplies the print data to the print executing unit 16 and causes the print executing unit 16 to print an image.

Since the print data is an image file or the like, it has a relatively large data size. The communication speed of NFC communication is slower than the communication speed of Wi-Fi communication. Therefore, if a configuration is adopted in which wireless communication of print data is performed between the printer PR and the target mobile terminal according to NFC communication, the printer PR requires a long time to receive the print data. On the other hand, in the present embodiment, since the wireless communication of the print data is executed between the printer PR and the target mobile terminal according to the Wi-Fi communication, the printer PR can quickly receive the print data. ..

In S86, the CPU 42 shifts the operating state of the printer PR from the G/O state to the device state in response to the completion of the printing process. Here, the device state is a state in which the printer PR is not operating in the G/O state or the client state, and the printer PR does not belong to the wireless network. When the printer PR shifts from the G/O state to the device state, the target wireless network disappears and the wireless connection between the printer PR and the target portable terminal is disconnected. When S86 ends, the process proceeds to S60.

As described above, after the value of the prohibition flag PF is changed to "1" in S82, the connection process is executed in S83. The reason is as follows. The number of mobile terminals that can participate in the target wireless network (hereinafter referred to as “upper limit number”) is predetermined, and is “1” in this embodiment. For example, if the transmission target data SD that is the current wireless profile is transmitted from the NFC I/F 30 to the mobile terminal PT2 while the printer PR is performing the connection process with the mobile terminal PT1, the following event may occur. That is, a specific connection request may be received from the mobile terminal PT2 while the connection processing with the mobile terminal PT1 is being executed. In this case, the connection process with the mobile terminal PT2 may be executed before the wireless connection with the mobile terminal PT1 is established, and the wireless connection with the mobile terminal PT2 may be established. That is, although the current wireless profile has been transmitted to the mobile terminal PT1 of the two mobile terminals PT1 and PT2 first, the wireless connection with the mobile terminal PT2 can be established. In this case, since the upper limit number is “1”, the mobile terminal PT1 cannot participate in the target wireless network. In order to avoid this, in the present embodiment, the connection process is executed after the value of the prohibition flag PF is changed to “1”, that is, after the NFC I/F 30 is in a state in which the transmission process cannot be executed. It As a result, in the above example, the event that the current wireless profile is transmitted to the mobile terminal PT2 does not occur while the connection processing with the mobile terminal PT1 is being executed, so that the wireless connection with the mobile terminal PT1 is appropriately performed. Established. In this way, the printer PR can suppress the occurrence of an event in which the mobile terminal that has received the current wireless profile cannot participate in the target wireless network.

In S90, the CPU 42 monitors that the power button PB (see FIG. 1) of the operation unit 12 is operated. When the power button PB is operated, the CPU 42 determines YES in S90, and proceeds to S92.

In S92, the CPU 42 supplies the PF change instruction to the NFC I/F 30. S92 is the same as S40 of FIG.

In S94, the CPU 42 executes a power OFF process. Specifically, for example, the CPU 42 performs maintenance of the print performing unit 16 (for example, a cap on the head surface of the inkjet head) or erases unnecessary data in the memory 44. Further, the CPU 42 indicates that the power of the printer PR is OFF when the printer PR is in the non-error state, that is, when the current wireless profile is stored in the NFC I/F 30 as the transmission target data SD. A write instruction supply process of supplying a write instruction including OFF information to the NFC I/F 30 is executed. Thereby, the processor 32 writes (that is, stores) the OFF information included in the write instruction in the data block DB as the new transmission target data SD, instead of the old transmission target data SD (that is, the current wireless profile). .. For example, the mobile terminal can display the OFF information if the OFF information is received from the printer PR. As a result, the user of the mobile terminal can know that the power of the printer PR is off.

When S94 ends, the CPU 42 switches the power supply of the printer PR from the ON state to the OFF state, and ends the processing of FIG. At the stage immediately before the processing of FIG. 3 ends, the value of the prohibition flag PF in the SRAM 34 of the NFC I/F 30 is "1" (see S92), but since the printer PR is powered off, the volatile memory The value of the prohibition flag PF in the SRAM 34 is changed to “0”. However, in a modification, the CPU 42 may supply the PF return instruction to the NFC I/F 30 after S94 ends.

As described above, the power OFF process is executed in S94 after the value of the prohibition flag PF is changed to "1" in S92. The reason is as follows. Even if the current wireless profile in the data block DB is transmitted from the NFC I/F 30 to the mobile terminal while the power OFF process is being executed, the mobile terminal uses the current wireless profile to communicate with the printer PR. Unable to establish wireless connection (ie cannot join the target wireless network). This is because the power of the printer PR is switched to the OFF state when the power OFF process ends. In order to avoid this, in the present embodiment, the power-off process is executed after the value of the prohibition flag PF is changed to "1", that is, after the NFC I/F 30 is in a state in which the transmission process cannot be executed. To be done. This prevents the current wireless profile from being transmitted to the mobile terminal while the power-off process is being executed. As described above, according to the present embodiment, the printer PR can suppress the occurrence of an event in which the mobile terminal that has received the current wireless profile cannot participate in the target wireless network. Further, in the power OFF process, the write instruction supply process may be executed. Therefore, since the write instruction supply process can be executed after the value of the prohibition flag PF is changed to “1”, incomplete data can be suppressed from being transmitted to the mobile terminal.

(Processing of processor 32; FIG. 4)
Next, processing executed by the processor 32 of the NFC I/F 30 will be described with reference to FIG. In the process of FIG. 4, the monitoring steps S100, S110, S120, and S130 are sequentially executed.

In S100, the processor 32 monitors the acquisition of the write instruction (see S42 of FIG. 2, S66 and S94 of FIG. 3) from the control unit 40 (that is, the CPU 42). The processor 32 determines YES in S100 when acquiring the write instruction from the control unit 40. In this case, in S102, the processor 32 executes a writing process of writing the new transmission target data SD in the write instruction acquired in S100 into the data block DB in the NVRAM 36, instead of the old transmission target data SD. To do. When S102 ends, the process returns to S100.

In S110, the processor 32 monitors whether the PF change instruction (see S40 in FIG. 2, S64, S82, and S92 in FIG. 3) is acquired from the control unit 40. When obtaining the PF change instruction from the control unit 40, the processor 32 determines YES in S110. In this case, in S112, the processor 32 changes the value of the prohibition flag PF in the SRAM 34 from “0” to “1”. When S112 ends, the process returns to S100.

In S120, the processor 32 monitors the acquisition of the PF return instruction (see S44 of FIG. 2, S68 and S84 of FIG. 3) from the control unit 40. When acquiring the PF return instruction from the control unit 40, the processor 32 determines YES in S120. In this case, in S122, the processor 32 changes the value of the prohibition flag PF in the SRAM 34 from “1” to “0”. When S122 ends, the process returns to S100.

In S130, the processor 32 monitors whether a Polling signal, which is a request signal for establishing a communication session, is received from the mobile terminal. When the distance between the NFC I/F 30 of the printer PR and the NFC I/F of the mobile terminal becomes a predetermined distance (for example, 10 cm) or less, the processor 32 receives the Polling signal from the mobile terminal and determines YES in S130. , S132. Although not shown, the processor 32 supplies a predetermined notification to the control unit 40 when receiving a Polling signal from the mobile terminal. In this case, the CPU 42 of the control unit 40 shifts the operating state of the printer PR from the device state to the G/O state when the operating state of the printer PR is the WFD system device state.

In S132, the processor 32 determines whether the value of the prohibition flag PF in the SRAM 34 is “0”. If the processor 32 determines that the value of the prohibition flag PF is “0” (YES in S132), the processor 32 proceeds to S134 and determines that the value of the prohibition flag PF is “1” (NO in S132). Then, the process returns to S100 without executing S134 to S138.

In S134, the processor 32 transmits a response signal to the Polling signal to the mobile terminal. As a result, a communication session is established between the NFC I/F 30 of the printer PR and the NFC I/F of the mobile terminal. In S136, the processor 32 reads the transmission target data SD from the data block DB in the NVRAM 36. Then, in S138, the processor 32 uses the communication session established in S134 to transmit the transmission target data SD to the mobile terminal. When S138 ends, the process returns to S100.

Each instruction of S100, S110, and S120 is supplied from the control unit 40 while the power of the printer PR is ON, and is controlled while the power of the printer PR is OFF. Not supplied from part 40. Therefore, the processes of S102, S112, and S122 are not executed in the situation where the power of the printer PR is in the OFF state. On the other hand, the processing of S130 to S138 is executed even when the power of the printer PR is in the ON state, but is executed by using the electromotive force caused by the induced current even when the power of the printer PR is in the OFF state. To be done. That is, the processor 32 can execute the transmission processing of S134 to S138 regardless of whether the power of the printer PR is ON or OFF.

(Case A; Figure 5)
Next, specific cases A to C realized by the flowcharts of FIGS. 2 to 4 will be described with reference to FIGS. In the initial state of case A in FIG. 5, the printer PR is in the non-error state. Therefore, the wireless profile is stored as the transmission target data SD in the data block DB of the NFC I/F 30 (S30 and S42 in FIG. 2, or S72 and S66 in FIG. 3).

The user of the mobile terminal PT1 brings the mobile terminal PT1 closer to the printer PR. As a result, the distance between the NFC I/F 30 of the printer PR and the NFC I/F of the mobile terminal PT1 becomes a predetermined distance (for example, 10 cm) or less, and the NFC I/F 30 of the printer PR receives the Polling signal 200 from the mobile terminal PT1. It receives (YES in S130 of FIG. 4) and transmits the response signal 202 to the mobile terminal PT1 (YES in S132, S134). As a result, a communication session is established. Then, the NFC I/F 30 uses the communication session to transmit the wireless profile that is the transmission target data SD to the mobile terminal PT1.

Although not shown, when the printer PR receives the Polling signal 200 from the portable terminal PT1, when the operating state of the printer PR is the device state, the operating state of the printer PR changes from the device state to G/ Move to O state. This point is the same when each Polling signal described below (reference numerals 220 and 240 in FIG. 5, reference numerals 300 and 320 in FIG. 6, etc.) is received. Then, when the printer PR is operating in the G/O state and receives a specific connection request from the mobile terminal PT1 (YES in S80 of FIG. 3), the printer PR establishes a wireless connection with the mobile terminal PT1. Then, the target wireless network is formed (S83). However, if the printer PR does not receive a specific connection request from the portable terminal PT1 even after a lapse of a predetermined time after shifting to the G/O state, the printer PR changes the operating state from the G/O state to the device. Return to the state.

The printer PR shifts from the non-error state to the error state during the first period in which the write instruction supply process is not executed (YES in S60 of FIG. 3). In this case, the control unit 40 of the printer PR supplies the PF change instruction 210 to the NFC I/F 30 (S64). As a result, in the NFC I/F 30, the value of the prohibition flag PF is changed from “0” to “1” (YES in S110 of FIG. 4, S112). Then, the control unit 40 executes the write instruction supply process of supplying the write instruction 212 including the error URL to the NFC I/F 30 in the second period in which the value of the prohibition flag PF is "1" (S66). .. As a result, in the NFC I/F 30, the error URL is written as the transmission target data SD instead of the wireless profile.

Before the writing instruction supply process of the control unit 40 is completed, that is, before the writing of the error URL to the NFC I/F 30 is completed, the user of the mobile terminal PT1 brings the mobile terminal PT1 closer to the printer PR again. As a result, the NFC I/F 30 of the printer PR receives the Polling signal 220 from the mobile terminal PT1 (YES in S130 of FIG. 4). However, since the value of the prohibition flag PF is "1", the NFC I/F 30 does not transmit the response signal to the mobile terminal PT1 (NO in S132). As a result, since the communication session is not established, the data in the NFC I/F 30 is not transmitted to the mobile terminal PT1.

The control unit 40 of the printer PR supplies the PF return instruction 214 to the NFC I/F 30 in response to the completion of the write instruction supply process (S68 in FIG. 3). As a result, in the NFC I/F 30, the value of the prohibition flag PF is changed from “1” to “0” (YES in S120 of FIG. 4, S122).

After that, the user of the mobile terminal PT1 brings the mobile terminal PT1 closer to the printer PR again. As a result, the NFC I/F 30 of the printer PR receives the Polling signal 240 from the mobile terminal PT1 (YES in S130 of FIG. 4) and transmits the response signal 242 to the mobile terminal PT1 (YES in S132, S134). As a result, a communication session is established. Then, the NFC I/F 30 uses the communication session to transmit the error URL that is the transmission target data SD to the mobile terminal PT1.

The mobile terminal PT1 accesses the error URL and displays a web page showing a method for eliminating the error currently occurring in the printer PR. As a result, the user can eliminate the error in the printer PR.

In Case A, the printer PR suppresses the data in the NFC I/F 30 from being transmitted to the mobile terminal PT1 while executing the write instruction supply process for writing the error URL in the NVRAM 36 of the NFC I/F 30. can do. Therefore, the printer PR can prevent incomplete data from being transmitted to the mobile terminal PT1.

(Case B; FIG. 6)
The initial state of case B of FIG. 6 is the same as the initial state of case A of FIG. 5, the printer PR is in the non-error state, and the wireless profile is stored in the data block DB of the NFC I/F 30. The communication of the signals 300 and 302 is executed, and the wireless profile is transmitted to the mobile terminal PT1 as in the case A of FIG.

The control unit 40 of the printer PR receives the specific connection request 305 including the SSID in the wireless profile from the mobile terminal PT1 via the wireless LAN I/F 20 in the first period in which the connection process is not executed (FIG. 3). YES in S80). Next, the control unit 40 supplies the PF change instruction 310 to the NFC I/F 30 (S82) and changes the value of the prohibition flag PF to “1” (YES in S110 of FIG. 4, S112). Then, the control unit 40 executes a connection process for establishing a wireless connection with the mobile terminal PT1 in the second period in which the value of the prohibition flag PF is “1”.

Before the connection process of the control unit 40 is completed, that is, before the wireless connection with the mobile terminal PT1 is established, the user of the mobile terminal PT2 different from the mobile terminal PT1 brings the mobile terminal PT2 closer to the printer PR. As a result, the NFC I/F 30 of the printer PR receives the Polling signal 320 from the mobile terminal PT2 (YES in S130 of FIG. 4). However, since the value of the prohibition flag PF is "1", the NFC I/F 30 does not transmit the response signal to the mobile terminal PT2 (NO in S132). As a result, since the communication session is not established, the wireless profile in the NFC I/F 30 is not transmitted to the mobile terminal PT2.

The control unit 40 of the printer PR supplies the PF restoration instruction 314 to the NFC I/F 30 in response to the completion of the connection process, that is, the establishment of the wireless connection with the portable terminal PT1 (S84 of FIG. 3). ), the value of the prohibition flag PF is changed to “0” (YES in S120 of FIG. 4, S122). Next, the control unit 40 uses the target wireless network to receive the print data 340 from the mobile terminal PT1 via the wireless LAN IF 20 and execute the print processing (S85 in FIG. 3). Then, the control unit 40 shifts the operating state of the printer PR from the G/O state to the device state and causes the target wireless network to disappear (S86). As a result, the wireless connection between the printer PR and the mobile terminal PT1 is cut off.

In case B, the printer PR suppresses the transmission of the wireless profile in the NFC I/F 30 to the mobile terminal PT2 while executing the connection process for establishing the wireless connection with the mobile terminal PT1. You can For this reason, the printer PR can suppress the occurrence of an event in which the mobile terminal PT1 that has received the wireless profile cannot participate in the target wireless network.

(Case C; Fig. 7)
The initial state of case C of FIG. 7 is similar to the initial state of case A of FIG. 5, the printer PR is in the non-error state, and the wireless profile is stored in the data block DB of the NFC I/F 30. The communication of the signals 400 and 402 is executed, and the wireless profile is transmitted to the mobile terminal PT1 as in the case A of FIG.

During the first period in which the power OFF process is not executed, the power button PB of the printer PR is operated by the user (YES in S90 of FIG. 3). In this case, the control unit 40 of the printer PR supplies the PF change instruction 410 to the NFC I/F 30 (S92) and changes the value of the prohibition flag PF to “1” (YES in S110 of FIG. 4, S112). Then, the control unit 40 executes the power OFF processing in the second period in which the value of the prohibition flag PF is "1" (S94).

Before the power-off process of the control unit 40 is completed, the user of the mobile terminal PT1 brings the mobile terminal PT1 closer to the printer PR again. As a result, the NFC I/F 30 of the printer PR receives the Polling signal 420 from the mobile terminal PT1 (YES in S130 of FIG. 4). However, since the value of the prohibition flag PF is "1", the NFC I/F 30 does not transmit the response signal to the mobile terminal PT2 (NO in S132). As a result, since the communication session is not established, the wireless profile in the NFC I/F 30 is not transmitted to the mobile terminal PT1.

The control unit 40 of the printer PR executes the write instruction supply process of supplying the write instruction 412 including the OFF information to the NFC I/F 30 in the process of executing the power OFF process (S94). As a result, in the NFC I/F 30, the OFF information is written as the transmission target data SD instead of the wireless profile (YES in S100 of FIG. 4, S102). The control unit 40 switches the power of the printer PR from the ON state to the OFF state in response to the completion of the power OFF process (end of the process in FIG. 3). As a result, in the NFC I/F 30, the value of the prohibition flag PF is changed to “0” because it is volatile.

After that, the user of the mobile terminal PT1 brings the mobile terminal PT1 closer to the printer PR again. As a result, the NFC I/F 30 of the printer PR receives the Polling signal 440 from the mobile terminal PT1 (YES in S130 of FIG. 4) and transmits the response signal 442 to the mobile terminal PT1 (YES in S132, S134). As a result, a communication session is established. Then, the NFC I/F 30 uses the communication session to transmit the OFF information, which is the transmission target data SD, to the mobile terminal PT1.

The mobile terminal PT1 displays the OFF information. As a result, the user can know that the power of the printer PR is off.

In Case C, the printer PR can suppress the transmission of the wireless profile in the NFC I/F 30 to the mobile terminal PT1 while executing the power OFF process. For this reason, the printer PR can suppress the occurrence of an event in which the mobile terminal PT1 that has received the wireless profile cannot participate in the target wireless network. Further, before the power of the printer PR is switched to the OFF state, the NFC I/F 30 writes the OFF information instead of the wireless profile. Therefore, when the power of the printer PR is in the OFF state, the wireless profile is not transmitted to the mobile terminal PT1, but the OFF information is transmitted to the mobile terminal PT1. Also in this respect, the printer PR can suppress the occurrence of an event in which the mobile terminal PT1 that has received the wireless profile cannot participate in the target wireless network.

If the printer PR is in an error state, that is, if the error URL is written in the NFC I/F 30, the write instruction including the OFF information is issued to the NFC I/F in the power OFF process (S94 in FIG. 3). Not supplied to F30. Therefore, the error URL is transmitted to the portable terminal PT1 when the power of the printer PR is off. Therefore, the mobile terminal PT1 accesses the error URL and displays the web page. Therefore, the user can know that the printer PR is in the error state even when the power of the printer PR is in the OFF state, and can eliminate the error in the printer PR.

(Effect of the first embodiment)
As shown in Cases A to C in FIGS. 5 to 7, in the present embodiment, the printer PR executes the write instruction supply process, the connection process, or the power OFF process, that is, the NFC I/F 30. In a situation where the data in the should not be transmitted to the mobile terminal, the data is not transmitted to the mobile terminal. Therefore, it is possible to prevent incomplete data from being transmitted to the mobile terminal (Case A in FIG. 5), and the mobile terminal that receives the wireless profile cannot join the target wireless network. Can be suppressed (cases B and C in FIGS. 6 and 7). Then, in a situation where each of the above processes is not executed, the transmission target data SD is transmitted to the mobile terminal. Therefore, the printer PR can transmit the transmission target data SD in the NFC I/F 30 to the mobile terminal in an appropriate situation.

(Correspondence)
The printer PR and the mobile terminals PT1 and PT2 are examples of “communication device” and “external device”, respectively. The NFC I/F 30 and the wireless LAN I/F 20 are examples of the “first wireless interface” and the “second wireless interface”, respectively. The NVRAM 36 and the SRAM 34 are examples of the “first memory” and the “second memory”, respectively. The state in which the value of the prohibition flag PF is “0” and the state in which the value of the prohibition flag PF is “1” are examples of the “first state” and the “second state”, respectively. The value “1” and the value “0” of the prohibition flag PF are examples of the “first value” and the “second value”, respectively. The PF change instruction and the PF return instruction are examples of the “first storage instruction” and the “first deletion instruction”, respectively.

S40 of FIG. 2, S64, S82, and S92 of FIG. 3 are an example of processing executed by the “first changing unit”. The write instruction supply process of S42 of FIG. 2, the write instruction supply process of S66 of FIG. 3, the connection process of S83, and the power OFF process of S94 are the “predetermined processes” executed by the “process execution unit”. This is an example. S44 of FIG. 2, S66 and S84 of FIG. 3, and terminating the process of FIG. 3 (that is, turning off the power of the printer PR) are examples of the process executed by the “second changing unit”.

(Second embodiment)
Differences from the first embodiment will be described. In the present embodiment, the NFC I/F 30 does not use the prohibition flag PF in the SRAM 34, but uses the writing flag WF (see FIG. 1) in the header block HB of the NVRAM 36.

The writing flag WF is in either a non-writing state in which data is not written in the data block DB or a writing state in which data is written in the data block DB. The value “0” and the value “1” indicate the non-writing state and the writing state, respectively. When the communication session with the mobile terminal is established in the state where the value “0” is stored as the writing flag WF (that is, in the non-writing state), the processor 32 transmits the data to be transmitted from the data block DB. The SD is read and the transmission target data SD is transmitted to the mobile terminal. That is, the processor 32 can execute the transmission process when the value “0” is stored as the writing flag WF. On the other hand, the processor 32 transmits from the data block DB when the communication session with the mobile terminal is established in the state where the value “1” is stored as the writing flag WF (that is, the writing state). The target data SD is not read and an empty packet containing no data is transmitted to the mobile terminal. That is, the processor 32 cannot execute the transmission process when the value “1” is stored as the writing flag WF. As will be described in detail later, in the present embodiment, "1" can be stored as the value of the writing flag WF even in the situation where the writing process is not executed. That is, in the present embodiment, “1” may be stored as the value of the writing flag WF in order to prohibit the processor 32 from executing the transmission process.

(Process of CPU 42; FIGS. 2 and 3)
In this embodiment, S40 and S44 of FIG. 2 are different from those of the first embodiment. In S40, the CPU 42 supplies the NFC I/F 30 with a WF change instruction for storing “1” in place of “0” as the value of the writing flag WF in the header block HB in the NVRAM 36. As a result, the processor 32 changes the value of the writing flag WF in the header block HB from “0” to “1” (YES in S110A of FIG. 8, see S112A). Further, in S44, the CPU 42 supplies the NFC I/F 30 with a WF return instruction for storing “0” in place of “1” as the value of the writing flag WF in the header block HB in the NVRAM 36. .. As a result, the processor 32 changes the value of the writing flag WF in the header block HB from “1” to “0” (YES in S120A of FIG. 8, see S122A).

Further, in the present embodiment, the CPU 42 supplies the WF change instruction to the NFC I/F 30 in S64, S82, and S92 of FIG. Although the write instruction supply process is not executed in the connection process of S83, “1” is stored as the value of the writing flag WF in S82. When the printer PR is in the error state, the write instruction supply process is not executed in the power OFF process of S94, but "1" is stored as the value of the writing flag WF in S92.

Further, in S68 and S84 of FIG. 3, the CPU 42 supplies a WF return instruction to the NFC I/F 30. The CPU 42 further supplies a WF recovery instruction to the NFC I/F 30 in S96 after the power OFF processing in S94 is completed. The reason is as follows. That is, the writing flag WF is stored in the NVRAM 36 which is a non-volatile memory. Therefore, the value of the writing flag WF is not changed from "1" to "0" due to the power supply of the printer PR being switched to the OFF state. Therefore, in this embodiment, the process of S96 is executed in order to change the value of the writing flag WF to "0" before the power of the printer PR is switched to the OFF state.

(Processing of Processor 32; FIG. 8)
The processor 32 of the NFC I/F 30 executes the process of FIG. 8 instead of the process of FIG. S100 and S102 of FIG. 8 are the same as S100 and S102 of FIG. When acquiring the WF change instruction from the control unit 40, the processor 32 determines YES in S110A and changes the value of the writing flag WF from “0” to “1” in S112A. Further, when acquiring the WF return instruction from the control unit 40, the processor 32 determines YES in S120A, and changes the value of the writing flag WF from “1” to “0” in S122A.

Further, when receiving the Polling signal from the mobile terminal, the processor 32 determines YES in S130 and transmits a response signal to the mobile terminal in S140. That is, in this embodiment, since the prohibition flag PF is not used, the response signal is always transmitted (that is, the communication session is always established) when the Polling signal is received from the mobile terminal.

In S142, the processor 32 determines whether or not the value of the writing flag WF is “0”. When determining that the value of the writing flag WF is “0” (YES in S142), the processor 32 executes S146 and S148. S146 and S148 are the same as S136 and S138 of FIG. On the other hand, when the processor 32 determines that the value of the in-writing flag WF is “1” (NO in S142), the processor 32 does not read the transmission target data SD from the data block DB and does not include the data in S150. Send an empty packet to the mobile terminal. Note that, similarly to the first embodiment, the processor 32 can execute the processing of S130 to S150 regardless of whether the power of the printer PR is in the ON state or the OFF state.

(Case D; FIG. 9)
Next, with reference to FIG. 9, a specific case D realized by this embodiment will be described. In the initial state of case D in FIG. 9, the printer PR is in the non-error state, and the wireless profile is stored in the data block DB of the NFC I/F 30. The communication of the signals 500 and 502 is executed, and the wireless profile is transmitted to the mobile terminal PT1 as in the case A of FIG.

The printer PR shifts from the non-error state to the error state during the first period in which the write instruction supply process is not executed (YES in S60 of FIG. 3). In this case, the control unit 40 of the printer PR supplies the WF change instruction 510 to the NFC I/F 30 (S64) to change the value of the writing flag WF to "1" (YES in S110A in FIG. 8, S112A). ). Then, the control unit 40 executes the write instruction supply process of supplying the write instruction 512 including the error URL to the NFC I/F 30 in the second period in which the value of the writing flag WF is “1” ( S66). As a result, in the NFC I/F 30, the error URL is written as the transmission target data SD instead of the wireless profile.

Before the write instruction supply process of the control unit 40 is completed, the NFC I/F 30 of the printer PR receives the Polling signal 520 from the mobile terminal PT1 (YES in S130 of FIG. 8) and sends the response signal 522 to the mobile terminal PT1. It is transmitted (S140). As a result, a communication session is established. Since the value of the writing flag WF is “1”, the NFC I/F 30 transmits an empty packet to the mobile terminal PT1 (NO in S142, S150). That is, the data in the data block DB is not transmitted to the mobile terminal PT1.

In response to the completion of the writing process, the control unit 40 of the printer PR supplies the WF return instruction 514 to the NFC I/F 30 (S68) and changes the value of the writing flag WF to "0" ( (YES in S120A of FIG. 4, S122A). After that, the communication of the signals 540 and 542 is executed, and the error URL is transmitted to the mobile terminal PT1 as in the case A of FIG.

(Effect of the second embodiment)
Also in the present embodiment, as shown in the case D of FIG. 9, the printer PR stores data in the data block DB while executing the write instruction supply process for writing the error URL in the NFC I/F 30. It is possible to suppress the transmission to the mobile terminal PT1. For this reason, the printer PR can suppress incomplete data from being transmitted to the mobile terminal PT1. Although a specific case is omitted in the figure, the data in the data block DB is not transmitted to the mobile terminal even in the situation where the connection process or the power OFF process is executed in the printer PR. Therefore, it is possible to suppress the occurrence of an event in which the mobile terminal receiving the wireless profile cannot participate in the target wireless network. Also in the present embodiment, the printer PR can transmit the transmission target data SD in the NFC I/F 30 to the mobile terminal in an appropriate situation.

(Correspondence)
The state in which the value of the writing flag WF is “0” and the state in which the value of the writing flag WF is “1” are examples of the “first state” and the “second state”, respectively. .. The value “1” and the value “0” of the writing flag WF are examples of the “third value” and the “fourth value”, respectively. The WF change instruction and the WF return instruction are examples of the “second storage instruction” and the “second deletion instruction”, respectively. Further, not only S44 and the like in FIG. 2, but the process of S96 is also an example of the process executed by the “second changing unit”.

(Third embodiment)
Differences from the first and second embodiments will be described. In the present embodiment, the NFC I/F 30 uses both the prohibition flag PF in the SRAM 34 and the writing flag WF in the NVRAM 36. The processing of the processor 32 of the NFC I/F 30 corresponds to the combination of FIG. 4 and FIG. 8 although not shown. Specifically, the processor 32 executes S100 to S122 of FIG. 4, S110A, S112A, S120A, and S122A of FIG. Further, the processor 32 executes S130 to S134 of FIG. 4, and then executes S142 to S150 of FIG.

(Process of CPU 42; FIGS. 2 and 3)
In S40 of FIG. 2, S64, S82, and S92 of FIG. 3, the CPU 42 supplies the PF change instruction to the NFC I/F 30, and then supplies the WF change instruction to the NFC I/F 30. Further, in S44 of FIG. 2, S68 of FIG. 3, and S84, the CPU 42 supplies a WF return instruction to the NFC I/F 30, and then supplies a PF return instruction to the NFC I/F 30. Further, in S96, the CPU 42 supplies a WF return instruction to the NFC I/F 30. However, in S96, the PF return instruction is not supplied to the NFC I/F 30. This is because when the power of the printer PR is switched to the OFF state, the value of the prohibition flag PF is changed to “0” due to the volatility. However, in a modified example, in S96, the CPU 42 may supply both the WF return instruction and the PF return instruction to the NFC I/F 30.

(Case E; FIG. 10)
Next, with reference to FIG. 10, a specific case E realized by the present embodiment will be described. In the initial state of case E in FIG. 9, the printer PR is in the non-error state, and the wireless profile is stored in the data block DB of the NFC I/F 30. The communication of the signals 600 and 602 is executed, and the wireless profile is transmitted to the mobile terminal PT1 as in the case A of FIG.

The printer PR shifts from the non-error state to the error state during the first period in which the write instruction supply process is not executed (YES in S60 of FIG. 3). In this case, the control unit 40 of the printer PR first supplies the PF change instruction 610 to the NFC I/F 30 (S64) and changes the value of the prohibition flag PF to "1" (YES in S110 of FIG. 4, S112). ). Next, the control unit 40 supplies the WF change instruction 611 to the NFC I/F 30 (S64) and changes the value of the writing flag WF to "1" (YES in S110A in FIG. 8, S112A). Then, the control unit 40 executes the write instruction supply process of supplying the write instruction 612 including the error URL to the NFC I/F 30 in the second period in which the value of the prohibition flag PF is "1" (S66). .. As a result, in the NFC I/F 30, the error URL is written as the transmission target data SD instead of the wireless profile (YES in S100 of FIG. 4, S102).

Before the write instruction supply process of the control unit 40 is completed, the user forcibly switches the power source of the printer PR from the ON state to the OFF state. For example, when the operation of the power button PB which is the soft button is not executed and the operation of another power button which is the hard button is executed, the power of the printer PR is forcibly switched to the OFF state. Further, for example, when the operation of disconnecting the power cord of the printer PR from the outlet is executed, the power of the printer PR is forcibly switched to the OFF state. When the power of the printer PR is forcibly switched to the OFF state, the NFC I/F 30 changes the value of the prohibition flag PF to “0” due to the volatility. However, the value of the in-writing flag WF is maintained at “1” due to the non-volatility.

After that, the user of the mobile terminal PT1 brings the mobile terminal PT1 closer to the printer PR again. As a result, the NFC I/F 30 of the printer PR receives the Polling signal 640 from the mobile terminal PT1 (YES in S130 of FIG. 4) and transmits the response signal 642 to the mobile terminal PT1 (YES in S132, S134). As a result, a communication session is established. However, since the value of the writing flag WF is “1”, the NFC I/F 30 transmits an empty packet to the mobile terminal PT1 (NO in S142, S150). That is, the data in the data block DB is not transmitted to the mobile terminal PT1.

(Effect of the third embodiment)
Also in the present embodiment, the printer PR can transmit the transmission target data SD in the NFC I/F 30 to the mobile terminal in an appropriate situation. Further, as shown in case E, the PF change instruction 610 is supplied to the NFC I/F 30, and “1” is stored as the value of the prohibition flag PF. Further, the WF change instruction 611 is supplied to the NFC I/F 30, and “1” is stored as the value of the writing flag WF. Therefore, when the communication session with the mobile terminal PT1 is established after the power of the printer PR is forcibly switched to the OFF state, an empty packet is transmitted to the mobile terminal PT1 and the data in the data block DB is transferred. It is not sent to the terminal PT1. Therefore, for example, while the power of the printer PR is in the OFF state, it is possible to suppress the event that the data in the data block DB is transmitted to the mobile terminal PT1. For example, when the power of the printer PR is forcibly switched to the OFF state while the wireless profile is stored in the data block DB, the wireless profile is changed while the power of the printer PR is in the OFF state. It is possible to suppress the transmission to the mobile terminal PT1. In this case, it is possible to prevent the event in which the mobile terminal PT1 receiving the wireless profile cannot participate in the target wireless network. Further, for example, when the power of the printer PR is forcibly switched to the OFF state while the wireless profile is being rewritten to the error URL in the data block DB, the power of the printer PR is in the OFF state. It is possible to prevent incomplete data from being transmitted to the mobile terminal PT1 during a certain period.

Further, in this embodiment, the PF change instruction 610 is supplied before the WF change instruction 611. If the configuration in which the WF change instruction 611 is supplied before the PF change instruction 610 is adopted, it is possible to use a mobile terminal between the WF change instruction 611 and the PF change instruction 610. Communication session is established and an empty packet can be transmitted. Further, if the configuration in which the PF return instruction is supplied before the WF return instruction is adopted in S44 of FIG. 2 and the like, from the time the PF return instruction is supplied until the WF return instruction is supplied. Then, a communication session with the mobile terminal is established and an empty packet can be transmitted. On the other hand, in this embodiment, the PF change instruction 610 is supplied before the WF change instruction 611, and the WF return instruction is supplied before the PF return instruction, so that the communication session with the mobile terminal is performed. It is possible to suppress the occurrence of an event in which an established empty packet is transmitted. As a result, the processing load of the printer PR can be reduced.

Specific examples of the present invention have been described above in detail, but 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 the above-described embodiment, the CPU 42 of the printer PR includes the write instruction supply process of S42 of FIG. 2 and S66 of FIG. 3, the connection process of S83, and the power OFF process of S94. When any one of the two processes is to be started, the operating state of the NFC I/F 30 is changed from the state in which the processor 32 can execute the transmission process to the state in which the processor 32 cannot execute the transmission process (see FIG. 2). S40, S64, S82, S92 in FIG. 3). Instead of this, the CPU 42 changes the operation state of the NFC I/F 30 when one or two of the above-mentioned three processes should be started. The operation state of the NFC I/F 30 does not have to be changed when the process should be started. For example, the CPU 42 changes the operating state of the NFC I/F 30 when starting the power OFF processing, but changes the operating state of the NFC I/F 30 when starting the write instruction supply processing or the connection processing. You don't have to. That is, the “predetermined process” does not have to include all of the above three processes.

(Modification 2) The “predetermined process” may be a process different from the above three processes described in the modification 1. For example, the CPU 42 changes the operating state of the NFC I/F 30 from the state in which the processor 32 can execute the transmission process to the state in which the processor 32 cannot execute the transmission process when the print process should be started. Good. Then, the CPU 42 may return the operating state of the NFC I/F 30 to the original state in response to the completion of the printing process. In this case, the wireless profile is not transmitted to the mobile terminal while the printing process is being executed. As a result, since the CPU 42 does not receive the connection request from the mobile terminal while executing the print processing, the CPU 42 does not have to execute the connection processing due to the connection request, and the connection processing prevents the print processing from being interrupted. Can be suppressed. In this modification, the printing process is an example of the “predetermined process”.

(Modification 3) The CPU 42 of the printer PR forms a wireless network by shifting the state of the printer PR from the WFD system device state to the G/O state. Instead of this, the CPU 42 may form a wireless network in which the printer PR operates as an AP by activating a so-called SoftAP (abbreviation of Access Point). In this modification, in S30 of FIG. 2 or S72 of FIG. 3, the CPU 42 prepares a wireless profile (SSID, password, etc.) to be used in the wireless network. Further, in S83 of FIG. 3, the CPU 42 establishes a wireless connection with the mobile terminal via the wireless LAN I/F 20 in order to allow the mobile terminal to participate in the wireless network. In this modification, the wireless profile of the wireless network in which the printer PR operates as an AP is an example of “transmission target data”.

(Modification 4) "Data to be transmitted" is not limited to a wireless profile, an error URL, and the like. The “transmission target data” may include, for example, data indicating the status of the printer PR (eg, printing, waiting, etc.), or data for identifying the printer PR (eg, device name of the printer PR, MAC address etc.) may be included. That is, the “data to be transmitted” may be any data that should be transmitted to the external device.

(Modification 5) In the first embodiment described above, "0" or "1" is stored in the SRAM 34 as the prohibition flag PF. Instead of this, for example, when the predetermined data indicating the predetermined character string is stored in the SRAM 34, the processor 32 cannot execute the transmission process, and the predetermined data is stored in the SRAM 34. When not in use, the processor 32 may be able to execute the transmission process. As in this modification, the above-mentioned predetermined data is an example of the “first value”, and the “second value” may not be used. Further, in the above-described second embodiment, "0" or "1" is stored in the NVRAM 36 as the writing flag WF. Instead of this, for example, when the NVRAM 36 stores predetermined data indicating a predetermined character string, the processor 32 cannot execute the transmission process, and the NVRAM 36 stores the predetermined data. When not in use, the processor 32 may be able to execute the transmission process. As in this modification, the above-mentioned predetermined data is an example of the “third value”, and the “fourth value” may not be used.

(Modification 6) In the third embodiment described above, the PF change instruction is supplied to the NFC I/F 30 before the WF change instruction, but instead, the WF change instruction is sent before the PF change instruction. It may be supplied to /F30. That is, the order in which the “first storage instruction” and the “second storage instruction” are supplied is not particularly limited. Further, in the third embodiment described above, the WF return instruction is supplied to the NFC I/F 30 before the PF return instruction, but instead of this, the PF return instruction is sent to the NFC I/F 30 before the WF return instruction. It may be supplied. That is, the order in which the “first deletion instruction” and the “second deletion instruction” are supplied is not particularly limited.

(Modification 7) In the second and third embodiments described above, when the value of the writing flag WF is "0" (NO in S142 of FIG. 8), an empty packet is transmitted (S150). Alternatively, when the value of the writing flag WF is “0”, the empty packet may not be transmitted. In this case, a communication session with the mobile terminal is established, but no packet is sent to the mobile terminal. That is, the “processor” does not have to transmit the packet that does not include the transmission target data to the external device.

(Modification 8) The NFC I/F 30 need not be an NFC forum tag, and may be an NFC forum device including a processor 32 and memories 34 and 36. Further, the printer PR may be provided with a wireless interface for performing wireless communication according to another method such as the TransferJet method or the BlueTooth (registered trademark) method instead of the NFC I/F 30. Generally speaking, the “first wireless interface” may be a wireless interface including a first memory and a processor.

(Modification 9) The “communication device” is not limited to the printer PR, but may be a scanner, a copier, a multi-function device, a mobile terminal, a PC, a server, or the like. The “external device” is not limited to the mobile terminals PT1 and PT2, and may be a printer, a scanner, a copy machine, a multi-function machine, a PC, a server, or the like.

(Modification 10) In the above-described embodiment, the CPU 42 of the printer PR executes the program PG (that is, software) in the memory 44 to realize the processes of FIGS. 2 and 3. Instead of this, at least one of the processes of FIGS. 2 and 3 may be realized by hardware such as a logic circuit.

Further, the technical elements described in the present specification or the drawings exert technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technique illustrated in the present specification or the drawings achieves a plurality of purposes at the same time, and achieving the one purpose among them has technical utility.
The features of the technology described in the present specification are listed below.
(Item 1)
Communication equipment,
A first wireless interface,
And a control unit,
The first wireless interface is
A first memory,
According to a write instruction obtained from the control unit, a writing process for writing the transmission target data to be transmitted to an external device in the first memory, and the transmission target data written in the first memory A transmission process for transmitting to an external device, and a processor for executing the process,
The first wireless interface has one of a plurality of operating states including a first state in which the processor can execute the transmission process and a second state in which the processor cannot execute the transmission process. Works with any of the
The control unit is
When the control unit should start the predetermined process during the first period in which the control unit does not execute the predetermined process, the operation state of the first wireless interface is changed from the first state to the second state. A first change unit for changing to a state,
The second period after the operating state of the first wireless interface is changed to the second state, and the operating state of the first wireless interface is the second state. A processing execution unit that executes the predetermined processing in the period 2;
A second changing unit that changes the operating state of the first wireless interface from the second state to the first state in response to the completion of the predetermined process;
Communication equipment equipped with.
(Item 2)
In the second state, the processor does not transmit a response signal to the request signal even if it receives a request signal for establishing a communication session with the external device from the external device, Item 2. The communication device according to Item 1, wherein the transmission process is not executed by not establishing the communication session.
(Item 3)
The first wireless interface further comprises a second memory,
The processor is
When the first value is stored in the second memory, even if a request signal for establishing a communication session with the external device is received from the external device, a response signal to the request signal is transmitted. Without performing the transmission process by not establishing the communication session with the external device,
The transmission process can be executed when the first value is not stored in the second memory,
The first changing unit stores a first storage instruction for storing the first value in the second memory when the control unit should start the predetermined process in the first period. To the processor,
The second changing unit supplies the processor with a first deletion instruction for deleting the first value from the second memory in response to the completion of the predetermined process, item 1 or The communication device according to 2.
(Item 4)
The processor may be configured such that the first value is not stored in the second memory and a second value different from the first value is stored in the second memory, The transmission process can be executed,
The first storage instruction is an instruction for storing the first value in the second memory in place of the second value,
4. The communication device according to item 3, wherein the first deletion instruction is an instruction for storing the second value in the second memory instead of the first value.
(Item 5)
The first memory is a non-volatile memory, and includes a header block and a data block in which the transmission target data is to be written,
The second memory is a volatile memory,
The processor is
When the third value is stored in the header block, even if the communication session with the external device is established, the transmission process is executed by not reading the transmission target data from the data block. No
The transmission process can be executed when the third value is not stored in the header block,
The first changing unit, during the first period, when the control unit should start the predetermined process, the second changing unit stores a second storage instruction for storing the third value in the header block. Supply to the processor,
The second changing unit supplies the processor with a second deletion instruction for deleting the third value from the header block in response to the completion of the predetermined process. In item 3 or 4, Communication equipment as described.
(Item 6)
The first changing unit supplies the second storage instruction to the processor when the control unit should start the predetermined process during the first period and then supplies the first storage instruction to the processor. Supply to the processor,
Item 6. The second changing unit supplies the first deletion instruction to the processor after supplying the second deletion instruction to the processor in response to the completion of the predetermined process, Item 5. Communication equipment.
(Item 7)
In the second state, the processor does not execute the transmission process by not reading the transmission target data from the first memory even if a communication session with the external device is established. Communication equipment as described.
(Item 8)
Item 8. The communication according to Item 7, wherein in the second state, the processor further transmits a packet not including the transmission target data to the external device when the communication session with the external device is established. machine.
(Item 9)
The first memory includes a header block and a data block in which the transmission target data is to be written,
The processor is
When the third value is stored in the header block, even if the communication session with the external device is established, the transmission process is executed by not reading the transmission target data from the data block. No
The transmission process can be executed when the third value is not stored in the header block,
The first changing unit outputs a second storage instruction for storing the third value in the header block when the control unit should start the predetermined process during the first period. Supply to the processor,
The second changing unit supplies the processor with a second deletion instruction for deleting the third value from the header block in response to the completion of the predetermined process. Communication equipment as described.
(Item 10)
The processor performs the transmission process when the third value is not stored in the header block and a fourth value different from the third value is stored in the header block. Is feasible,
The second storage instruction is an instruction for storing the third value in the header block instead of the fourth value,
10. The communication device according to item 9, wherein the second deletion instruction is an instruction for storing the fourth value in the header block instead of the third value.
(Item 11)
11. The predetermined process includes a process for supplying the processor with the write instruction for changing the content of the transmission target data in the first memory, according to any one of items 1 to 10. Communication equipment.
(Item 12)
The communication device further comprises
A second wireless interface different from the first wireless interface,
The transmission target data includes data for establishing a wireless connection with the external device via the second wireless interface,
12. The communication device according to any one of Items 1 to 11, wherein the predetermined process includes a process for establishing the wireless connection with the external device via the second wireless interface.
(Item 13)
The communication device further comprises
An operation unit including a button for switching the power supply of the communication device between an ON state and an OFF state,
The predetermined process is for switching the power supply of the communication device from the ON state to the OFF state due to the operation unit being operated by the user while the power supply of the communication device is in the ON state. 13. The communication device according to any one of items 1 to 12, including the process of.
(Item 14)
A computer program for a communication device,
The communication device includes a first wireless interface and a control unit,
The first wireless interface is
A first memory,
According to a write instruction obtained from the control unit, a writing process of writing transmission target data to be transmitted to an external device in the first memory, and the transmission target data written in the first memory A transmission process for transmitting to an external device, and a processor for executing the process,
The first wireless interface has a plurality of operating states including a first state in which the processor can execute the transmission process and a second state in which the processor cannot execute the transmission process. Works with any of the
The computer program causes the control unit to perform the following processes:
During the first period in which the control unit does not execute the predetermined process, the operation state of the first wireless interface is changed from the first state to the second state when the control unit should start the predetermined process. Changing to a state,
In the second period after the operating state of the first wireless interface is changed to the second state, the operating state of the first wireless interface is the second state. Performing the predetermined process in the period of 2, and
Changing the operating state of the first wireless interface from the second state to the first state in response to completion of the predetermined process;
A computer program that causes a computer to execute.

2: communication system, PR: printer, PT1, PT2: mobile terminal, 12: operation unit, PB: power button, 14: display unit, 16: print execution unit, 20: wireless LAN interface, 30: NFC interface, 32: Processor, 34: VRAM, PF: prohibition flag, 36: NVRAM, HB: header block, WF: writing flag, DB: data block, SD: transmission target data, 40: control unit, 42: CPU, 44: memory , PG: Program, 200: Polling signal, 202: Response signal, 210: PF change instruction, 212: Write instruction, 214: PF return instruction

Claims (15)

Communication equipment,
A first wireless interface,
And a control unit,
The first wireless interface is
A first memory,
According to a write instruction obtained from the control unit, a writing process for writing the transmission target data to be transmitted to an external device in the first memory, and the transmission target data written in the first memory A transmission process for transmitting to an external device, and a processor for executing the process,
The first wireless interface has one of a plurality of operating states including a first state in which the processor can execute the transmission process and a second state in which the processor cannot execute the transmission process. Works with any of the
The control unit is
A monitoring unit that monitors that the state of the communication device changes between an error state and a non-error state,
During the first period in which the control unit does not execute the predetermined process, the control unit starts the predetermined process due to the state of the communication device changing between the error state and the non-error state. A first changing unit that changes the operating state of the first wireless interface from the first state to the second state when the predetermined process is performed in the first memory. A first changing unit including a process for supplying the processor with the write instruction for changing the content of the transmission target data ,
The second period after the operating state of the first wireless interface is changed to the second state, and the operating state of the first wireless interface is the second state. A processing execution unit that executes the predetermined processing in the period 2;
A second changing unit that changes the operating state of the first wireless interface from the second state to the first state in response to completion of the predetermined process;
Communication equipment equipped with. The communication device further includes an error sensor,
The processing execution section, by the error sensor, wherein when the the communication device state changes to the error state from the non-error state is detected, and executing the predetermined processing,
The predetermined process includes a process for supplying the processor with the write instruction for changing the content of the transmission target data in the first memory into information for eliminating the error state, The communication device according to claim 1 . The communication device according to claim 2 , wherein the information for eliminating the error state includes a URL (abbreviation of Uniform Resource Locator) of a web page indicating a method for eliminating the error state. The communication device further comprises
A second wireless interface different from the first wireless interface , wherein a communication speed of wireless communication via the second wireless interface is faster than a communication speed of wireless communication via the first wireless interface. , Comprising the second wireless interface ,
The process execution unit executes the predetermined process when the state of the communication device changes from the error state to the non-error state,
The predetermined process changes the content of the transmission target data in the first memory into a wireless profile for the external device to communicate with the communication device via the second wireless interface. the write instruction contains a process for supplying to the processor, the communication device according to any one of claims 1 to 3. The second wireless interface is an interface for executing wireless communication according to the Wi-Fi system,
The communication device according to claim 4 , wherein the wireless profile includes an SSID (abbreviation of Service Set Identifier) of a wireless network for the external device to communicate with the communication device via the second wireless interface. The communication device according to claim 5 , wherein the wireless network is formed by the communication device operating as a Wi-Fi Direct type Group Owner state or an AP (abbreviation of Access Point). The first wireless interface, NFC is an interface for performing wireless communication according to scheme (Near Field Communication Abbreviation) communications device according to any one of claims 1 to 6. In the second state, the processor does not transmit a response signal to the request signal even if it receives a request signal for establishing a communication session with the external device from the external device, The communication device according to any one of claims 1 to 7 , wherein the transmission process is not executed by not establishing the communication session of. The first wireless interface further comprises a second memory,
The processor is
Even if a request signal for establishing a communication session with the external device is received from the external device in the second state in which the first value is stored in the second memory, the request signal By not transmitting a response signal and not establishing the communication session with the external device, the transmission process is not executed,
The transmission process can be executed in the first state in which the first value is not stored in the second memory,
The first changing unit stores a first storage instruction for storing the first value in the second memory when the control unit should start the predetermined process in the first period. To the processor,
The second changing unit supplies a first deletion instruction for deleting the first value from the second memory to the processor in response to completion of the predetermined process. 9. The communication device according to any one of items 8 to 8 . Wherein the processor is said first value indicating the second state to the second memory is not stored, and, at a second value different from the first value to the second memory If the second value indicating the first state is stored, the transmission process can be executed.
The first storage instruction is an instruction for storing the first value in the second memory in place of the second value,
The communication device according to claim 9 , wherein the first deletion instruction is an instruction for storing the second value in the second memory instead of the first value. In the second state, the processor does not execute the transmission process by not reading the transmission target data from the first memory even if a communication session with the external device is established. 7. The communication device according to any one of items 1 to 7 . In the second state, said processor further, when the communication session with the external device is established, and transmits the packet not including the transmission target data to said external device, according to claim 11 Communication equipment. The first memory includes a header block and a data block in which the transmission target data is to be written,
The processor is
In the second state in which the third value is stored in the header block, even if the communication session with the external device is established, the transmission target data is not read from the data block, so that the transmission is performed. Without performing any processing,
The transmission process can be executed in the first state in which the third value is not stored in the header block,
The first changing unit outputs a second storage instruction for storing the third value in the header block when the control unit should start the predetermined process during the first period. Supply to the processor,
Said second change portion, the predetermined processing in response to the completed, supplies a second deletion instruction for deleting the third value from the header block to said processor, according to claim 11 or 12 Communication equipment according to. In the processor, the third value indicating the second state is not stored in the header block, and the processor block has a fourth value different from the third value , The transmission process can be executed when the fourth value indicating the first state is stored,
The second storage instruction is an instruction for storing the third value in the header block instead of the fourth value,
The communication device according to claim 13 , wherein the second deletion instruction is an instruction for storing the fourth value in the header block instead of the third value. A computer program for a communication device,
The communication device includes a first wireless interface and a control unit,
The first wireless interface is
A first memory,
According to a write instruction obtained from the control unit, a writing process for writing the transmission target data to be transmitted to an external device in the first memory, and the transmission target data written in the first memory A transmission process for transmitting to an external device, and a processor for executing the process,
The first wireless interface has one of a plurality of operating states including a first state in which the processor can execute the transmission process and a second state in which the processor cannot execute the transmission process. Works with any of the
The computer program causes the control unit to perform the following processes:
Observing that the state of the communication device changes between an error state and a non-error state,
During the first period in which the control unit does not execute the predetermined process, the control unit starts the predetermined process due to the state of the communication device changing between the error state and the non-error state. Changing the operating state of the first wireless interface from the first state to the second state when
The second period after the operating state of the first wireless interface is changed to the second state, and the operating state of the first wireless interface is the second state. Performing the predetermined process in the period of 2, and
Changing the operating state of the first wireless interface from the second state to the first state in response to completion of the predetermined process;
Was executed,
The predetermined process is a computer program including a process for supplying the processor with the write instruction for changing the content of the transmission target data in the first memory .

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