JP5929672B2 - Wireless communication system, wireless communication device, and communication control program - Google Patents

Description

  The present invention relates to a technique for performing wireless communication between a plurality of communication devices.

  2. Description of the Related Art Conventionally, there is a wireless communication system including an initiator that is a wireless communication device that transmits data and a target that is a wireless communication device that receives data (see Patent Document 1). In this wireless communication system, when the size of the data scheduled to be transmitted is equal to or less than the threshold, the initiator selects NFC (Near Field Communication or near field communication) as a communication method and targets the data as a target. Send. On the other hand, when the size of the data scheduled to be transmitted is equal to or greater than the threshold, the initiator switches the communication method from NFC to Bluetooth (registered trademark), which has a longer communicable distance than the NFC, and transmits the data to the target.

JP 2010-178002 A

  By the way, as described above, the communication method such as Bluetooth (registered trademark) has a longer communicable distance than NFC. Therefore, when the communication method such as Bluetooth is used, the user of the initiator is compared with the case where NFC is used. May move to a location relatively far away from the target. In this case, for example, various inconveniences may occur due to wireless communication over a relatively long distance such that the user cannot immediately cope with an error or the like generated on the target side.

  The present specification discloses a technique capable of suppressing the occurrence of inconvenience due to wireless communication at a relatively far distance.

  The wireless communication system disclosed in the present specification is a wireless communication system including a first communication device and a second communication device, and the first communication device includes short-range wireless communication and the short-range wireless communication. A first interface for executing long-distance wireless communication having a longer communicable distance than communication; and a first control unit, wherein the second communication device includes the short-distance wireless communication and the long-distance wireless communication. A second interface and a second control unit for executing at least one of the first control unit and the second control unit, wherein the wireless communication establishment state is the short-range wireless communication and the long-distance Whether the wireless communication connection has been established, or the short-range wireless communication connection has been disconnected, and the long-distance wireless communication connection has been established, or When it is determined that the state determination process to be determined and the wireless communication establishment state are the both establishment states, data is transmitted from the first communication device by the long-distance wireless communication to the second communication. A function execution process for transmitting a function to the apparatus and executing a function based on the transmitted data; and, in the process of executing the function, if it is determined that the wireless communication establishment state is the one-side establishment state, the data transmission / reception And a stop process for stopping at least one of the executions of the functions.

  When it is determined that both wireless communication establishment states are established, the wireless communication system transmits data from the first communication device to the second communication device by long-distance wireless communication. Perform functions based on the transmitted data. Further, in this execution process, when it is determined that the wireless communication establishment state has become one establishment state, at least one of data transmission / reception and function execution is stopped. Thereby, since transmission / reception of data and execution of functions are suppressed as they are in one-side established state, it is possible to suppress the occurrence of inconvenience due to wireless communication at a relatively long distance.

  In the wireless communication system, at least one of the first control unit and the second control unit has a configuration for executing a data determination process for determining whether the data is specific data or non-specific data. In the function execution process, when it is determined that the data is the non-specific data, the transmission / reception of the data and the execution of the function are performed regardless of whether the wireless communication establishment state is the one-side establishment state. It is also possible to adopt a configuration that does not stop.

  When it is determined that the data is non-specific data, the wireless communication system does not stop data transmission / reception and execution of functions even if the wireless communication establishment state becomes one of the established states. As a result, when the data is non-specific data, priority is given to the continuation of data transmission / reception and execution of functions rather than suppressing the occurrence of inconvenience due to wireless communication at a relatively long distance. Can do.

  In the wireless communication system, at least one of the first control unit and the second control unit stops at least one of transmission / reception of the data and execution of the function, and then the state of establishment of the wireless communication is the state of both establishments If it is determined that the operation has stopped, the start process for starting the operation stopped by the stop process may be executed.

  When the wireless communication system determines that both wireless communication establishment states have been established after stopping at least one of data transmission / reception and function execution, the wireless communication system starts the stopped operation. Accordingly, when both wireless communication establishment states are established, the stopped operation can be automatically started without requiring an operation by the user.

  In the wireless communication system, at least one of the first control unit and the second control unit is configured such that, in the start process, an elapsed time after stopping at least one of transmission / reception of the data and execution of the function is a reference time. If it is determined that the establishment state of the wireless communication has become the establishment state of both, the operation stopped by the stop process is started, and even if the elapsed time reaches the reference time, the wireless communication is started. In a case where it is not determined that the communication establishment state is the both establishment state, a stop process for stopping the operation stopped by the stop process may be executed.

  In this wireless communication system, if it is not determined that both wireless communication establishment states have been established even if the elapsed time after stopping at least one of data transmission / reception and function execution reaches the reference time, the stop processing is performed. Stops the stopped operation. As a result, since both wireless communication establishment states do not return to the establishment state, it is possible to prevent the data transmission / reception and the function execution stop state from continuing for a long time.

  In the wireless communication system, at least one of the first control unit and the second control unit generates an error in executing the function based on information on the data and / or at least one of the second communication devices An error determination process for determining whether or not there is a possibility of the occurrence of the error, and in the function execution process, when it is determined that the error is not likely to occur, the wireless communication establishment state is the one-side establishment state Even when it is determined that the data has been received, the transmission / reception of the data and the execution of the function may not be stopped.

  The wireless communication system determines whether or not there is a possibility that an error will occur in the execution of the function based on information on at least one of the data and the second communication device. Even when it is determined that the communication establishment state is the one establishment state, data transmission / reception and function execution are not stopped. As a result, when there is no possibility of an error in executing the function, data transmission / reception and execution of the function are performed rather than suppressing the occurrence of inconvenience due to wireless communication at a relatively long distance. You can prioritize continuation.

  In the wireless communication system, setting information for establishing a connection for the long-distance wireless communication is transmitted from the first communication apparatus to the second communication apparatus by the short-range wireless communication, and the long-distance communication is performed. You may have the structure which performs the communication establishment process which establishes the connection of radio | wireless communication.

  This wireless communication system transmits setting information for establishing a long-distance wireless communication connection from a first communication device to a second communication device by short-range wireless communication, and establishes a connection for long-distance wireless communication. Establish. Accordingly, it is possible to establish a long-distance wireless communication connection more efficiently than a configuration in which the user himself inputs the setting information.

  The present invention is realized in various modes such as a wireless communication system, a wireless communication device, a wireless communication disconnection method, a computer program for realizing the functions of these methods or devices, and a recording medium on which the computer program is recorded. be able to.

  According to the invention disclosed in this specification, it is possible to suppress the occurrence of inconvenience due to wireless communication at a relatively long distance.

1 is a block diagram illustrating a wireless communication system according to an embodiment. Flow chart showing mobile terminal processing Flow chart showing MFP processing Sequence diagram when an interruption request is required and the NFC communication connection is disconnected

  An embodiment will be described with reference to FIGS. As shown in FIG. 1, a wireless communication system 1 according to this embodiment includes a mobile terminal 10, a multi-function device (hereinafter referred to as MFP (Multi Function Peripheral)) 20, and an access point (hereinafter referred to as “AP”). 30).

(Configuration of mobile device)
The mobile terminal 10 is an example of a first communication device, and is, for example, a mobile phone (for example, a smartphone), a PDA, a notebook PC, a tablet PC, a portable music playback device, a portable video playback device, or the like. The mobile terminal 10 includes a terminal control unit 11, a wireless LAN interface 12, an NFC interface 13, an operation unit 14, and a display unit 15.

  The terminal control unit 11 (an example of a first control unit) includes a central processing unit (hereinafter referred to as CPU) 11A and a memory 11B. The memory 11B includes, for example, a ROM, a RAM, and the like. The ROM includes an OS, application software capable of creating print data, a printer driver for controlling the MFP 20, application software capable of processing read data from the MFP 20, Various programs such as a program for executing a portable terminal process (an example of a communication control program) to be described later are stored. CPU11A controls each part of the portable terminal 10 according to the program read from ROM. The storage medium for storing the various programs may be a non-volatile memory such as a CD-ROM, a hard disk device, or a flash memory (registered trademark) in addition to the ROM and RAM.

  The wireless LAN interface 12 is an example of a first interface, and the terminal control unit 11 performs wireless communication in accordance with a Wi-Fi Direct method (hereinafter referred to as WFD method), wireless communication in accordance with normal Wi-Fi, It is an interface for executing. Both types of wireless communication are examples of long-range wireless communication. In the WFD system, wireless communication is performed based on the IEEE standard of IEEE (The Institute of Electrical and Electronics Engineers, Inc.) and standards conforming thereto (for example, 802.11a, 11b, 11g, 11n, etc.). Is done. In addition, the wireless communication according to the WFD method is direct wireless communication that does not use the AP 30, and wireless communication is possible exclusively between one-to-one wireless devices, and unless the wireless communication connection is disconnected, Wireless communication cannot be performed with another wireless device. Normally, wireless communication according to Wi-Fi is indirect wireless communication using the AP 30, and wireless communication is possible between one-to-many wireless devices.

  The NFC interface 13 is an example of a first interface, and is an interface for the terminal control unit 11 to perform short-range wireless communication according to an NFC (Near Field Communication) method. NFC wireless communication is an example of short-range wireless communication. Note that NFC wireless communication is performed based on the international standard of ISO / IEC21481 or ISO / IEC18092. Further, the NFC scheme and the Wi-Fi scheme are different in wireless communication scheme, and the communication speed of the Wi-Fi scheme wireless communication is faster than the communication speed of the NFC scheme wireless communication. Further, the communicable distance of Wi-Fi wireless communication is longer than the communicable distance of NFC wireless communication.

  The operation unit 14 has a plurality of buttons, and various input operations can be performed by the user. The display unit 15 includes a liquid crystal display, a lamp, and the like, and can display various setting screens and operation states of the apparatus.

(MFP configuration)
The MFP 20 is an example of a second communication device, and includes an MFP control unit 21, a wireless LAN interface 22, an NFC interface 23, an operation unit 24, a display unit 25, a print execution unit 26, and a reading execution unit 27.

  The MFP control unit 21 (an example of a second control unit) includes a CPU 21A and a memory 21B. The memory 21B includes, for example, a ROM, a RAM, and the like. The ROM includes a program for executing MFP processing described later, a program for executing various operations of the print execution unit 26 and the read execution unit 27, and the like. Is remembered. The CPU 21A controls each unit of the MFP 20 according to the program read from the ROM. In addition to the ROM and RAM, the medium storing the various programs may be a non-volatile memory such as a CD-ROM, a hard disk device, or a flash memory.

  The wireless LAN interface 22 is an example of a second interface, and is an interface for the MFP control unit 21 to execute wireless communication in accordance with the WFD method and wireless communication in accordance with normal Wi-Fi. The NFC interface 23 is an example of a second interface, and is an interface for the MFP control unit 21 to perform near field communication according to the NFC method.

  The operation unit 24 has a plurality of buttons, and various input operations can be performed by the user. The display unit 25 includes a liquid crystal display, a lamp, and the like, and can display various setting screens and operation states of the apparatus. The print execution unit 26 is an example of a process execution unit, and is a printing mechanism such as an inkjet method or an electrophotographic method. The print execution unit 26 prints an image based on print data received from the mobile terminal 10 on a printing sheet (not shown). The reading execution unit 27 has a reading device such as a charge coupled drive image sensor (CCD) or a contact image sensor (CIS), and reads an image on a document sheet (not shown).

(Mobile device processing)
The user of the mobile terminal 10 can input an instruction for starting the application program and causing the MFP 20 to execute the printing function or the scanning function by using the operation unit 14. Hereinafter, a case where a print function execution instruction is input will be described as an example. While the MFP 20 is powered on, the NFC I / F 23 is in a state of detecting a device capable of performing NFC wireless communication by emitting a detection radio wave.

  After the user inputs the print function execution instruction, when the portable terminal 10 is brought close to the MFP 20 and the distance between the portable terminal 10 and the MFP 20 becomes shorter than the distance (for example, 10 cm) where radio waves reach each other, the NFC interface 13 receives the detected radio wave from the MFP 20 and transmits a response radio wave to the MFP 20. Thereafter, the terminal control unit 11 performs communication for establishing an NFC communication connection (NFC communication session) between the mobile terminal 10 and the MFP 20 via the NFC interfaces 13 and 23 with the MFP control unit 21 of the MFP 20. Run between.

  When the NFC communication connection is established, the terminal control unit 11 starts the portable terminal process shown in FIG. 2 and starts NFC communication with the MFP 20 (S1). The terminal control unit 11 transmits a Wi-Fi connection request to the MFP 20 by NFC communication (S2). The process of S2 is an example of a communication establishment process, and at this time, the terminal control unit 11 functions as a communication establishment unit. The Wi-Fi connection request includes Wi-Fi connection information (an example of setting information) for establishing a Wi-Fi communication connection (Wi-Fi communication session). The Wi-Fi connection information includes, for example, a communication method, an authentication method, an encryption method, an SSID (Service Set Identifier) that is an identifier for identifying a wireless network, and a unique identifier of an access destination for constructing the wireless network. A certain BSSID (Basic Service Set Identifier) or the like is included.

  After transmitting the Wi-Fi connection request, the terminal control unit 11 determines whether a Wi-Fi connection response to the request is received from the MFP 20 (S3), and determines that the Wi-Fi connection response is not received. In the case (S3: NO), when waiting and determining that a Wi-Fi connection response has been received (S3: YES), a Wi-Fi communication connection is established between the mobile terminal 10 and the MFP 20. Accordingly, a Wi-Fi communication connection can be established more efficiently than a configuration in which the user himself / herself manually inputs the Wi-Fi connection information into the MFP 20. Then, the terminal control unit 11 starts data transmission processing for transmitting a print job to the MFP 20 based on the print function execution instruction by Wi-Fi communication (S4). The process of S4 is an example of a function execution process. At this time, the terminal control unit 11 functions as a function execution unit.

  The print job includes print data and setting information. The print data is an example of data and is image data to be processed by the print function. The setting information includes information about the job and processing condition information. The information regarding the job includes information regarding whether or not the job is a keyed job that can be processed by successful authentication such as a password, and information regarding data such as the amount of print data and the number of prints. The processing condition information includes various printing conditions such as the type of printing sheet (thick paper, plain paper, etc.), the printing method (single-sided printing, double-sided printing, multiple pages printed on one sheet (also referred to as Nin1 printing), etc.). included.

  After starting transmission of the print job, the terminal control unit 11 determines whether or not an interruption request for transmission of the print job has been received from the MFP 20 (S5). If the terminal control unit 11 determines that the transmission of the print job has been completed without receiving the interruption request (S5: NO and S10: YES), the terminal control unit 11 ends the portable terminal process, for example, the WiS with the MFP 20 -Disconnect Fi communication connection.

  On the other hand, for example, when the NFC communication connection is disconnected due to the user moving from the MFP 20 to a place away from the NFC communicable distance while holding the mobile terminal 10, the MFP 20 connects the mobile terminal 10 to the mobile terminal 10 as described later. Send the above interruption request. If the terminal control unit 11 determines in S5 that the interruption request has been received (S5: YES), even if the Wi-Fi communication connection is not disconnected, the transmission of the print job by the Wi-Fi communication is interrupted. (S6). The process of S6 is an example of a stop process. Next, the terminal control unit 11 determines whether or not an NFC restart request has been transmitted to the MFP 20 within a first reference time (for example, 10 minutes) from when the print job transmission is interrupted (S7).

  For example, when the NFC communication connection is established when the user brings the mobile terminal 10 close to the MFP 20 again, the terminal control unit 11 transmits an NFC restart request to the MFP 20. If it is determined that the NFC restart request has not been transmitted within the first reference time (S7: NO), the terminal control unit 11 cancels the print job and performs a notification operation (S11). The process ends. The process of S11 is an example of a cancellation process. In the process of canceling the print job, for example, the terminal control unit 11 removes the print job from the transmission candidates or deletes the print job from the memory 11B, and performs a standby process or a communication process with another communication apparatus. Processing that prioritizes execution is included. Further, the notification process includes a process of notifying the outside, for example, the terminal control unit 11 displaying on the display unit 15 that the print job has been canceled.

  The terminal control unit 11 transmits an NFC restart request within the first reference time (S7: YES), and sends a restart response, which will be described later, within a second reference time (for example, 1 minute) from when the NFC restart request is transmitted. If it is determined that the print job is received (S8: YES), transmission of the print job is resumed by Wi-Fi communication (S9). Thereafter, when the terminal control unit 11 determines that the transmission of the print job is not completed (S10: NO), the terminal control unit 11 returns to S5 and determines that the transmission of the print job is completed (S10: YES). Terminate terminal processing. If the terminal control unit 11 determines in S8 that the restart response has not been received from the MFP 20 within the second reference time (S8: NO), the process proceeds to S11.

(MFP processing)
As described above, the user brings the mobile terminal 10 close to the MFP 20, the NFC interface 23 receives the response radio wave from the mobile terminal 10, and the MFP controller 21 connects the NFC communication (NFC) between the mobile terminal 10 and the MFP 20. When the communication for establishing the communication session is executed, the MFP control unit 21 executes the MFP process shown in FIG.

  When it is determined that the Wi-Fi connection request is not received from the mobile terminal 10 (S21: NO), the MFP control unit 21 waits, and when it is determined that the Wi-Fi connection request is received (S21: YES), A Wi-Fi connection response is transmitted to the mobile terminal 10 by NFC communication (S22), and reception of the print job from the mobile terminal 10 is started (S23). Further, the MFP control unit 21 starts printing based on the received print data (S23). The process of S23 is an example of a function execution process.

  Next, the MFP controller 21 determines whether or not it is necessary to interrupt transmission / reception of a print job by Wi-Fi communication (S24). The MFP control unit 21 makes this determination using at least one of the setting information included in the print job described above and information about the MFP. The process of S24 is an example of a data determination process and an error determination process. At this time, the MFP control unit 21 functions as a data determination unit and an error determination unit. Specifically, when two or more of the following determination elements are used, the MFP control unit 21 needs to be interrupted if the determination result of at least one determination element needs to be interrupted. It is preferable to judge that.

[When using job information]
This is an example of using setting information included in a print job. The MFP control unit 21 determines whether it is necessary to interrupt transmission / reception of the print job based on whether the print job is a specific job. Specifically, if the MFP control unit 21 determines that the print job is a job that needs to be kept secret from another person, the MFP control unit 21 determines that the transmission / reception of the print job needs to be interrupted. For example, when the print job is a keyed job or the print data includes characters such as secrets, the MFP control unit 21 determines that the transmission / reception of the print job needs to be interrupted. In this case, if the user has moved to a location far away from the MFP 20, there is a possibility that the printing unit generated based on the print data may be removed by another person. On the other hand, if the MFP control unit 21 determines that the print job is not a job that needs to be kept secret from others, the MFP control unit 21 determines that there is no need to interrupt transmission / reception of the print job.

  If the MFP control unit 21 determines that the amount of print data or the number of prints is equal to or greater than the specified value, the print control unit 21 determines that the print job is likely to cause a print abnormality error or is a high job, and prints. It is determined that the job transmission / reception needs to be interrupted. In this case, there is a possibility that a printing error such as disappearance of consumables or replacement items such as a printing sheet and a colorant during printing may occur or is high. If the user has moved to a location far away from the MFP 20 when this abnormal printing error actually occurs, there will be inconveniences such as not being aware of the abnormal printing error or slowing down the resolution. For this reason, the MFP control unit 21 determines that the transmission / reception of the print job needs to be interrupted.

  Note that the abnormal printing error at this time is a resolvable error that can eliminate the prohibited state of the processing based on the print data by supplementing the printing sheet or the colorant. On the other hand, if the MFP control unit 21 determines that the print data amount or the like is less than the specified value, it is determined that it is not necessary to interrupt transmission / reception of the print job because there is no possibility that the above-described print abnormality error occurs.

[When using processing condition information]
This is an example of using setting information included in a print job. When the type of printing sheet is thick paper or a special size, or the printing method is double-sided printing or Nin1 printing, the MFP control unit 21 may generate a printing abnormality error such as sheet jamming or is high. Even if it is determined, it is determined that it is necessary to interrupt transmission / reception of the print job. This is also because inconveniences such as a delay in the work for eliminating the abnormal printing error occur. Note that this print abnormality error is a resolvable error that can eliminate the prohibited state of processing based on print data by removing a jammed print sheet. On the other hand, when the MFP control unit 21 determines that there is no possibility or low occurrence of the above-described abnormal printing error, such as the type of printing sheet is plain paper or a standard size, or the printing method is single-sided printing. It is determined that there is no need to interrupt transmission / reception of the print job.

[When using information about MFP]
The MFP control unit 21 determines whether or not an error may occur based on the state of the MFP 20. For example, when the MFP control unit 21 determines that the print job is received in a state where the remaining amount of the printing sheet or the colorant in the MFP 20 is equal to or less than a specified amount, the MFP control unit 21 determines that the transmission / reception of the print job needs to be interrupted. In this case, there is a high possibility that the printing sheet and the colorant are lost during printing and the above-mentioned printing abnormality error occurs. On the other hand, if the MFP control unit 21 determines that the print job has been received with the remaining amount of the print sheet or the like exceeding the specified amount, the print error error is unlikely to occur. Judge that no interruption is necessary.

  If the MFP control unit 21 determines that the transmission / reception of the print job needs to be interrupted (S24: YES), the MFP control unit 21 executes a state determination process for determining whether the NFC communication connection is disconnected (S25). For example, when the NFC interface 23 constantly monitors the NFC communication radio waves from the mobile terminal and determines that the NFC communication radio wave has not been received from the mobile terminal 10 for a predetermined time, the MFP control unit 21 performs NFC communication. It is determined that the connection is disconnected. At this time, the NFC communication connection is disconnected, and the Wi-Fi communication connection is established. This state is an example of the one-side established state.

  On the other hand, if the NFC interface 23 determines that the NFC communication radio wave is received from the mobile terminal 10, the MFP control unit 21 determines that the NFC communication connection has been established. At this time, both NFC communication connection and Wi-Fi communication connection are established, and this state is an example of both established states.

  If the MFP control unit 21 determines that the NFC communication connection is disconnected (S25: YES), the MFP control unit 21 transmits an interruption request to the mobile terminal 10 by Wi-Fi communication (S26). This interruption request requests the mobile terminal 10 to interrupt transmission of a print job. Further, the MFP controller 21 interrupts the printing started in S23 (S26). The process of S26 is an example of a stop process.

  Next, when the MFP control unit 21 determines that the NFC restart request has been received within a third reference time (for example, 10 minutes) from the transmission of the interruption request (S27: YES), the Wi-Fi communication is performed. A restart response is transmitted to the portable terminal 10 (S28). Then, the MFP control unit 21 resumes reception of the print job via Wi-Fi communication and printing based on the print job (S29). The process of S29 is an example of a start process. Accordingly, when both wireless communication establishment states are established, it is possible to automatically start transmission / reception and printing of the interrupted print job without requiring any user operation. The MFP control unit 21 may be configured to restart reception and printing from the beginning for all data portions of the print job.

  If the MFP control unit 21 determines that the reception and printing of the print job has been completed after the reception and printing are resumed (S30: YES), the MFP processing is terminated. On the other hand, if the MFP controller 21 determines in S24 that there is no need to interrupt transmission / reception of the print job (S24: NO), it continues to receive and print the print job without executing the processing of S25 and the like. Thereafter, when it is determined that the processing has been completed (S31: YES), the MFP processing is terminated. As a result, for example, when the print job is a job with low error occurrence, it is possible to send and receive print jobs and to reduce the function rather than suppressing the inconvenience caused by wireless communication at a relatively long distance. Priority can be given to continued execution.

  If the MFP control unit 21 determines in S24 that the transmission / reception of the print job needs to be interrupted (S24: YES), but determines that the NFC communication connection is established (S25: NO), The process proceeds to S30 without executing the process of S27 and the like. Further, if the MFP controller 21 determines in S27 that an NFC restart request has not been received within the third reference time (S27: NO), the print job is canceled (S32), and the MFP process is terminated. To do. The process of S32 is an example of a cancellation process. As a result, since both wireless communication establishment states do not return to the establishment state, it is possible to prevent the data transmission / reception and the function execution stop state from continuing for a long time.

(Sequence when an interruption request is required and the NFC communication connection is disconnected)
As shown in FIG. 4, when the MFP control unit 21 determines that the interruption is necessary (S24: YES) and determines that the NFC communication connection is disconnected (S25: YES), the MFP control unit 21 sends an interruption request to the mobile terminal 10. Then, the printing is interrupted (S26). Thereafter, when the user brings the mobile terminal 10 closer to the MFP 20, the terminal control unit 11 transmits an NFC restart request to the MFP 20 (S7: YES).

  On the other hand, when the MFP control unit 21 transmits a restart response to the portable terminal 10 (S28), the terminal control unit 11 resumes transmission of the print job (S9), and the MFP control unit 21 resumes printing (S29). ). Accordingly, transmission / reception of a print job is executed on condition that both the NFC communication connection and the Wi-Fi communication connection are established, and when the NFC communication connection is disconnected, the Wi-Fi communication connection is established. It is interrupted even in the state.

(Effect of this embodiment)
When it is determined that both wireless communication establishment states are established, the wireless communication system 1 transmits data from the mobile terminal 10 to the MFP 20 by long-distance wireless communication, and the transmitted data is converted into the transmitted data. Perform the function based on. Further, in this execution process, when it is determined that the wireless communication establishment state has become one establishment state, at least one of data transmission / reception and function execution is stopped. Thereby, since transmission / reception of data and execution of functions are suppressed as they are in one-side established state, it is possible to suppress the occurrence of inconvenience due to wireless communication at a relatively long distance.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and includes, for example, the following various aspects.
The “first communication device” is not limited to the portable terminal 10 and may be a personal computer or a server.

  In the above embodiment, the terminal control unit 11 and the MFP control unit 21 are configured to execute the processes of FIGS. However, the present invention is not limited to this, and the terminal control unit 11 and the MFP control unit 21 are configured by only a hardware circuit such as an ASIC (Application Specific Integrated Circuit) or the like in which each process of FIGS. 3 may be configured, or the CPU and the hardware circuit may execute the processes illustrated in FIGS.

  The wireless LAN interfaces 12 and 22 may be configured to execute only one of wireless communication according to a Wi-Fi Direct method (hereinafter referred to as WFD method) and wireless communication according to normal Wi-Fi. The “first interface and second interface” execute NFC wireless communication, infrared communication, Bluetooth (registered trademark), Transfer Jet, and the like in addition to NFC wireless communication and Wi-Fi wireless communication. It may be an interface for

  The “short-range wireless communication” may be infrared communication, Bluetooth (registered trademark), Transfer Jet, or the like in addition to the NFC wireless communication. The “long-distance wireless communication” may be an interface for executing NFC wireless communication, infrared communication, Bluetooth (registered trademark), Transfer Jet, and the like in addition to Wi-Fi wireless communication. “Short-range wireless communication” and “long-range wireless communication” are not related to how long each communicable distance is specifically, but the latter is more communicable than the former. Good.

The “second communication device” is not limited to the MFP that can execute the print function and the scan function, but may be a printer that can execute only the print function of the print function and the scan function, or a scanner that can execute only the scan function. . Further, the “second communication device” is a device (for example, a PC, a server, a portable device) that executes a function or process (for example, an image display function, a data calculation function, or a facsimile function) different from the print function and the scan function. A telephone, a smartphone, etc.).

  The “function execution process” is not limited to a print job transmission / reception process or a print process, and may be any process that executes a process based on data. For example, the image execution process by the reading execution unit 27 or the display units 15 and 25. It is also possible to perform processing for displaying an image, data calculation processing, or the like.

  In the above embodiment, when a scan function execution instruction is input by the user, the MFP control unit 21 executes a process of transmitting the read data read by the read execution unit 27 to the mobile terminal 10. This process is an example of a function execution process. At this time, the MFP control unit 21 functions as a function execution unit.

  In the above-described embodiment, the MFP control unit 21 also starts printing at the start of receiving a print job (S23). However, the present invention is not limited to this, and the MFP control unit 21 may be configured to start printing after reception of all print jobs is completed.

  The MFP control unit 21 may determine whether it is necessary to interrupt transmission / reception of the print job before receiving the print job (before S23). For example, the MFP control unit 21 may receive only the setting information first from the mobile terminal 10 and start receiving a print job after determining whether or not it is necessary to continue the connection. In this case, the MFP control unit 21 may receive the setting information by NFC communication. In addition, the terminal control unit 11 of the mobile terminal 10 may be configured to determine whether transmission / reception needs to be interrupted. However, in this case, only information related to the MFP needs to be received from the MFP 20.

  In the above embodiment, the MFP control unit 21 may be configured to execute the processing from S25 on all print jobs without making the determination in S24. Further, when the MFP control unit 21 determines that there is no need for interruption (S24: NO), the process itself of S25 is not executed. However, the present invention is not limited to this, and if the MFP control unit 21 determines that there is no need for interruption (S24: NO), it executes the processing of S25, but continues to send and receive print jobs and print regardless of the determination result. The structure to do may be sufficient.

  For the above embodiment, the terminal control unit 11 may execute a process corresponding to the state determination process of S25. Specifically, when the NFC interface 13 determines that the NFC interface 13 has not received NFC communication radio waves from the MFP 20 for a predetermined time, the terminal control unit 11 determines that the NFC communication connection is in a disconnected state.

  The “stop process” may be a process for stopping only one of a print job transmission attempt and printing. Further, the “cancel process” may be a process in which either the terminal control unit 11 or the MFP control unit 21 disconnects the Wi-Fi communication connection.

  1: Wireless communication system 10: Mobile terminal 11: Terminal control unit 12: Wireless LAN interface 13: NFC interface 20: MFP 22: Wireless LAN interface 23: NFC interface 21: MFP control unit 30: Access point

Claims (8)

A wireless communication system comprising a first communication device and a second communication device,
The first communication device includes a first interface for executing short-range wireless communication and long-range wireless communication having a longer communicable distance than the short-range wireless communication, and a first control unit,
The second communication device includes a second interface and a second control unit for executing the short-range wireless communication and the long-range wireless communication,
At least one of the first controller and the second controller is
The established state of the wireless communication is a state where both the short distance wireless communication and the long distance wireless communication are established, or the short distance wireless communication is disconnected, and the long distance is established. A state determination process for determining whether the wireless communication connection has been established;
When it is determined that the wireless communication establishment state is the both establishment state, data is transmitted from the first communication device to the second communication device by the long-distance wireless communication, and the transmission is performed. A function execution process for executing a function based on the generated data;
A configuration for executing a stop process for stopping at least one of the transmission / reception of the data and the execution of the function when it is determined that the establishment state of the wireless communication is the one-side establishment state in the process of executing the function A wireless communication system. The wireless communication system according to claim 1,
At least one of the first controller and the second controller is
A configuration for performing a data determination process for determining whether the data is specific data or non-specific data;
In the function execution process, when it is determined that the data is the non-specific data, transmission / reception of the data and execution of the function are stopped regardless of whether the wireless communication establishment state is the one-side establishment state. No, wireless communication system. The wireless communication system according to claim 1 or 2,
At least one of the first controller and the second controller is
After stopping at least one of the transmission / reception of the data and the execution of the function, if it is determined that the state of establishment of the wireless communication is the state of establishment of both, a start process for starting the operation stopped by the stop process is executed A wireless communication system having a configuration. A wireless communication system according to claim 3,
At least one of the first controller and the second controller is
In the start process, when it is determined that the established state of the wireless communication is the established state before the elapsed time after stopping at least one of the transmission / reception of the data and the execution of the function reaches a reference time, The operation stopped by the stop process is started,
In addition, even if the elapsed time reaches the reference time, when it is not determined that the wireless communication establishment state has become the both establishment state, a stop process for stopping the operation stopped by the stop process is executed. Wireless communication system. The wireless communication system according to any one of claims 1 to 4,
At least one of the first controller and the second controller is
Based on information related to at least one of the data and the second communication device, an error determination process is performed to determine whether or not an error may occur in the execution of the function,
In the function execution process, when it is determined that there is no possibility of the error occurring, even when it is determined that the wireless communication establishment state is the one-side establishment state, transmission / reception of the data and execution of the function are stopped. No, wireless communication system. A wireless communication system according to any one of claims 1 to 5,
Setting information for establishing the connection of the long-distance wireless communication is transmitted from the first communication apparatus to the second communication apparatus by the short-range wireless communication, and the connection of the long-distance wireless communication is established. A wireless communication system having a configuration for executing communication establishment processing. A wireless communication device that receives data from an external device,
An interface for executing short-range wireless communication and long-range wireless communication having a longer communicable distance than the short-range wireless communication;
A control unit,
The controller is
The established state of the wireless communication is a state where both the short distance wireless communication and the long distance wireless communication are established, or the short distance wireless communication is disconnected, and the long distance is established. A state determination process for determining whether the wireless communication connection has been established;
Function execution processing for receiving data from the external device by the long-distance wireless communication and executing a function based on the received data when the wireless communication establishment state is determined to be the both establishment state When,
A configuration for executing a stop process for stopping at least one of the reception of the data and the execution of the function when it is determined that the establishment state of the wireless communication is the one-side established state during the execution of the function; A wireless communication device. To a wireless communication apparatus having an interface for executing short-range wireless communication and long-range wireless communication having a longer communicable distance than the short-range wireless communication,
The established state of the wireless communication is a state where both the short distance wireless communication and the long distance wireless communication are established, or the short distance wireless communication is disconnected, and the long distance is established. A state determination process for determining whether the wireless communication connection has been established;
When it is determined that the establishment state of the wireless communication is the both establishment state, data transmission processing for transmitting data to an external device by the long distance wireless communication;
A communication control program for executing a stop process for stopping the data transmission when it is determined that the wireless communication establishment state is the one-side establishment state in the data transmission process.

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