JP6650793B2 - Communication device, communication device control method, and program - Google Patents

Description

  The present invention relates to a communication device capable of communicating with another device via wireless communication.

  2. Description of the Related Art In recent years, a digital camera that is connected to a mobile phone via a wireless LAN (Local Area Network) and is capable of transmitting and receiving image data has been known. Also, in order to omit a part of the procedure that must be operated by the user for the connection via the wireless communication, communication parameters for connecting via the wireless communication are shared using another wireless communication. Techniques (so-called handovers) are known. For example, Patent Document 1 discloses that communication parameters for connecting devices via a wireless LAN are shared between the devices by using NFC (Near Field Communication).

JP 2013-157736 A

  Generally, when the handover technique disclosed in Patent Document 1 is used, an application that realizes the function is used. However, at present, there are OSs that can control the wireless LAN connection setting of the operating system (OS) from the application side and OSs that cannot. Therefore, even if the communication parameters can be shared, depending on the type of the OS, the application cannot set the parameters of the wireless LAN in the OS, and the connection to the wireless LAN cannot be automatically executed. In this case, the user has to open a setting menu of the OS and manually input communication parameters.

  The present invention has been made in view of the above circumstances, and has as its object to reduce the loss of user convenience depending on the type of OS.

In order to achieve the above object, a communication device of the present invention includes a first communication unit that communicates with an external device via a first wireless communication, and a second wireless communication different from the first wireless communication. A second communication unit that communicates with the external device via the communication unit, a generation unit that generates a communication parameter used in the first wireless communication, and a case where the second communication unit communicates with the external device and the external device. And when at least one of the cases where an instruction to communicate via the first communication unit is received from the user occurs, the control unit controlling to communicate with the external device by the first communication unit, the generating means, the operating system of the external device, a first operating sheet that can change the setting of the first communication means of the external device from optionally installable applications Whether it is Temu, depending on whether the second operating system can not change the setting of the first communication means of the external device from optionally installable applications, the external device via the first wireless communication It is characterized in that the format of the communication parameter used when communicating with the server is changed.

  According to the present invention, it is possible to reduce the loss of user convenience depending on the type of OS.

FIG. 1A is a block diagram illustrating a configuration of a digital camera according to a first embodiment. 2B and 2C are external views of the digital camera according to the first embodiment. FIG. 2A is a block diagram illustrating a configuration of a smart device according to the first embodiment. FIG. 2B is an external view of the smart device according to the first embodiment. 5 is an example of a screen displayed on the smart device according to the first embodiment. 5 is an example of a screen displayed on the smart device according to the first embodiment. FIG. 3 is a diagram illustrating a communication sequence between the digital camera and the smart device according to the first embodiment. FIG. 3 is a diagram illustrating a communication sequence between the digital camera and the smart device according to the first embodiment. 3 is an example of a screen displayed by the digital camera according to the first embodiment. 5 is an example of a screen displayed on the smart device according to the first embodiment. FIG. 3 is a diagram illustrating a communication sequence between the digital camera and the smart device according to the first embodiment. 3 is a flowchart of the digital camera according to the first embodiment.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.
The embodiment described below is an example of a means for realizing the present invention, and may be appropriately modified or changed depending on the configuration of the apparatus to which the present invention is applied and various conditions. Further, the respective embodiments can be appropriately combined.

[First Embodiment]
<Configuration of Digital Camera 100>
FIG. 1A is a block diagram illustrating a configuration example of a digital camera 100 which is an example of a communication device according to the present embodiment. Although a digital camera is described here as an example of the communication device, the communication device is not limited to this. For example, the communication device may be an information processing device such as a portable media player, a so-called tablet device, or a personal computer.

  The control unit 101 controls each unit of the digital camera 100 according to an input signal and a program described later. Note that, instead of the control unit 101 controlling the entire apparatus, a plurality of hardware may share processing to control the entire apparatus.

  The imaging unit 102 includes, for example, an optical lens unit and an optical system that controls aperture, zoom, focus, and the like, and an imaging element that converts light (video) introduced through the optical lens unit into an electrical video signal. Be composed. In general, a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device) is used as the imaging device. The imaging unit 102 is controlled by the control unit 101 to convert subject light imaged by a lens included in the imaging unit 102 into an electric signal by an imaging device, perform noise reduction processing and the like, and convert digital data into an image. Output as data. In the digital camera 100 of the present embodiment, the image data is recorded on the recording medium 110 in accordance with the DCF (Design Rule for Camera File system) standard.

  The non-volatile memory 103 is an electrically erasable and recordable non-volatile memory, and stores a program to be described later, which is executed by the control unit 101, and the like.

  The work memory 104 is used as a buffer memory that temporarily stores image data captured by the image capturing unit 102, an image display memory of the display unit 106, a work area of the control unit 101, and the like.

  The operation unit 105 is used by a user to receive an instruction for the digital camera 100 from the user. The operation unit 105 includes, for example, a power button for instructing the user to turn on / off the power of the digital camera 100, a release switch for instructing shooting, and a playback button for instructing playback of image data. Further, it includes an operation member such as a dedicated connection button for starting communication with an external device via a communication unit 111 described later. Further, a touch panel formed on a display unit 106 described later is also included in the operation unit 105. The release switch has SW1 and SW2. When the release switch is in a so-called half-pressed state, SW1 is turned on. Thus, an instruction for performing shooting preparation such as AF (auto focus) processing, AE (auto exposure) processing, AWB (auto white balance) processing, and EF (flash pre-flash) processing is received. When the release switch is in a so-called full-press state, SW2 is turned on. Thus, an instruction to perform shooting is received.

  The display unit 106 performs display of a viewfinder image at the time of photographing, display of photographed image data, character display for interactive operation, and the like. The display unit 106 does not necessarily need to be built in the digital camera 100. The digital camera 100 can be connected to an internal or external display unit 106 and only needs to have at least a display control function of controlling display on the display unit 106.

  The recording medium 110 can record the image data output from the imaging unit 102. The recording medium 110 may be configured to be detachable from the digital camera 100, or may be built in the digital camera 100. That is, the digital camera 100 only needs to have at least means for accessing the recording medium 110.

  The communication unit 111 is an interface for connecting to an external device. The digital camera 100 of the present embodiment can exchange data with an external device via the communication unit 111. For example, image data generated by the imaging unit 102 can be transmitted to an external device via the communication unit 111. In the present embodiment, the communication unit 111 includes an interface for communicating with an external device via a so-called wireless LAN according to the IEEE 802.11 standard. The control unit 101 realizes wireless communication with an external device by controlling the communication unit 111.

  The short-range wireless communication unit 112 includes, for example, an antenna for wireless communication and a modulation / demodulation circuit and a communication controller for processing wireless signals. The short-range wireless communication unit 112 outputs a modulated wireless signal from an antenna, and demodulates a wireless signal received by the antenna to perform short-range wireless communication in accordance with the IEEE 802.15 standard (so-called Bluetooth (registered trademark)). To achieve. In the present embodiment, Bluetooth (registered trademark) communication employs version 4.0 of Bluetooth (registered trademark) Low Energy, which has low power consumption. This Bluetooth (registered trademark) communication has a narrower communicable range (that is, a shorter communicable distance) than wireless LAN communication. The communication speed of Bluetooth (registered trademark) communication is lower than that of wireless LAN communication. On the other hand, Bluetooth (registered trademark) communication consumes less power than wireless LAN communication.

  The communication unit 111 of the digital camera 100 according to the present embodiment has an AP mode operating as an access point in the infrastructure mode and a CL mode operating as a client in the infrastructure mode. By operating the communication unit 111 in the CL mode, the digital camera 100 according to the present embodiment can operate as a CL device in the infrastructure mode. When the digital camera 100 operates as a CL device, it is possible to participate in a network formed by AP devices by connecting to peripheral AP devices. In addition, by operating the communication unit 111 in the AP mode, the digital camera 100 according to the present embodiment operates as a simple AP, which is a kind of an AP but has more limited functions (hereinafter, a simple AP). Is also possible. When the digital camera 100 operates as a simple AP, the digital camera 100 forms a network by itself. A device around the digital camera 100 recognizes the digital camera 100 as an AP device and can participate in a network formed by the digital camera 100. A program for operating the digital camera 100 as described above is stored in the nonvolatile memory 103.

  When the communication unit 111 of the digital camera 100 operates in the AP mode, it is possible to prevent an image from being leaked due to eavesdropping on communication or the like by using a predetermined security method. In this embodiment, a case will be described in which WPA (Wi-Fi (registered trademark) Protected Access 2) or PSK (PreShared Key) mode of WPA2 is adopted as a security method. In the PSK mode of WPA or WPA2, two types of security keys can be used. One is an ASCII character (pass phrase) of 8 to 63 characters. Alternatively, a 64-digit hexadecimal number (PSK) can be used. If a passphrase is selected during an actual authentication operation, the passphrase is converted into PSK based on an algorithm defined in WPA / WPA2 and used.

  Note that the digital camera 100 according to the present embodiment is a kind of AP, but is a simple AP that does not have a gateway function for transferring data received from a CL device to an Internet provider or the like. Therefore, even if data is received from another device participating in the network formed by the own device, it cannot be transferred to a network such as the Internet.

  Next, the appearance of the digital camera 100 will be described. FIGS. 1B and 1C are views showing an example of the external appearance of the digital camera 100. FIG. The release switch 105a, the reproduction button 105b, the direction key 105c, and the touch panel 105d are operation members included in the operation unit 105 described above. Further, on the display unit 106, an image obtained as a result of the imaging by the imaging unit 102 is displayed.

  The above is the description of the digital camera 100.

<About the internal configuration of the smart device 200>
FIG. 2A is a block diagram illustrating a configuration example of a smart device 200 which is an example of the information processing apparatus according to the present embodiment. Note that the smart device includes a mobile phone such as a smartphone and a so-called tablet device. Here, a smart device will be described as an example of the information processing apparatus, but the information processing apparatus is not limited to this. For example, the information processing device may be a digital camera with a wireless function, a printer, a television, a personal computer, or the like.

  The control unit 201 controls each unit of the smart device 200 according to an input signal and a program described later. Note that, instead of the control unit 201 controlling the entire apparatus, a plurality of hardware may share the processing to control the entire apparatus.

  The imaging unit 202 converts subject light formed by a lens included in the imaging unit 202 into an electric signal, performs noise reduction processing and the like, and outputs digital data as image data. After the captured image data is stored in the buffer memory, the control unit 201 performs a predetermined operation and records the data on the recording medium 210.

The nonvolatile memory 203 is an electrically erasable and recordable nonvolatile memory. The non-volatile memory 203 stores an OS (Operating System), which is basic software executed by the control unit 201, and an application that realizes an applied function in cooperation with the OS. In the present embodiment, an application (hereinafter, an application) for communicating with the digital camera 100 is stored in the nonvolatile memory 203.
The work memory 204 is used as an image display memory of the display unit 206, a work area of the control unit 201, and the like.

  The operation unit 205 is used to receive an instruction for the smart device 200 from a user. The operation unit 205 includes, for example, an operation member such as a power button for a user to instruct ON / OFF of the power of the smart device 200 and a touch panel formed on the display unit 206.

  The display unit 206 performs display of image data, character display for interactive operation, and the like. The display unit 206 does not necessarily need to be provided in the smart device 200. The smart device 200 can be connected to the display unit 206 and has at least a display control function of controlling display on the display unit 206.

  The recording medium 210 can record the image data output from the imaging unit 202. The recording medium 210 may be configured to be detachable from the smart device 200, or may be built in the smart device 200. That is, the smart device 200 only needs to have at least means for accessing the recording medium 210.

  The communication unit 211 is an interface for connecting to an external device. The smart device 200 of the present embodiment can exchange data with the digital camera 100 via the communication unit 211. In the present embodiment, the communication unit 211 is an antenna, and the control unit 101 can connect to the digital camera 100 via the antenna. The connection with the digital camera 100 may be made directly or via an access point. As a protocol for communicating data, for example, PTP / IP (Picture Transfer Protocol over Internet Protocol) through a wireless LAN can be used. The communication with the digital camera 100 is not limited to this.

  In the communication with the digital camera 100 in the present embodiment, the communication unit 111 of the digital camera 100 operates in the AP mode. The communication unit 211 of the smart device 200 establishes a communication connection by connecting to the communication unit 111 of the digital camera 100 operating in the AP mode.

  When using the communication unit 211 of the smart device 200, communication parameters must be set. Here, there are two types of systems: a system in which a dedicated setting application provided by a system developer must be used, and a system in which communication connection can be controlled by a user application provided by a third party who is not the system developer. . The user application provided by the third party here is an application that can be arbitrarily installed by the user of the smart device 200.

  In a system in which a dedicated setting application provided by a system development maker must be used, the user must set the communication unit 211 from the wireless LAN connection setting screen of the dedicated setting application. For example, an SSID (Service Set Identifier) of a wireless LAN network to be connected is selected, and a password of the wireless LAN network is input if necessary. Thus, the communication unit 211 of the smart device 200 can establish a communication connection with the communication unit 111 of the digital camera 100 operating in the AP mode.

  On the other hand, in a system in which communication connection can be controlled by a user application provided by a third party who is not a system development maker, the application can automatically set the communication unit 211. For example, if the application acquires the SSID / password from the digital camera 100 via the short-range wireless communication unit 212 described later, the user can establish communication with the digital camera 100 and the wireless LAN without selecting the wireless LAN network. it can.

  The short-range wireless communication unit 212 includes, for example, an antenna for wireless communication and a modulation / demodulation circuit and a communication controller for processing wireless signals. The short-range wireless communication unit 212 outputs a modulated wireless signal from an antenna, and demodulates a wireless signal received by the antenna to perform short-range wireless communication according to the IEEE 802.15 standard (so-called Bluetooth (registered trademark)). To achieve. In this embodiment, Bluetooth (registered trademark) communication adopts Bluetooth (registered trademark) Low Energy version 4.0 (BLE), which has low power consumption. This Bluetooth (registered trademark) communication has a narrower communicable range (that is, a shorter communicable distance) than wireless LAN communication. In addition, Bluetooth (registered trademark) communication has a lower communication speed than wireless LAN communication. On the other hand, Bluetooth (registered trademark) communication consumes less power than wireless LAN communication. Note that when transmitting an image captured by the digital camera 100 to the smart device 200, it is not realistic to use BLE in terms of communication speed. On the other hand, if the wireless LAN connection is always used, the power consumption is large, and it is not possible to keep the connection even when the image is not taken. Therefore, the digital camera 100 and the smart device 200 according to the present embodiment are normally connected by BLE with low power consumption, and switch from BLE communication to wireless LAN communication at the timing of receiving an image transfer instruction, thereby achieving the above-described communication. Solve speed and power issues.

  Further, in the short-range wireless communication with the digital camera 100 in the present embodiment, it is necessary to perform a process of mutually recognizing devices to be connected by short-range wireless communication called pairing at the first connection. In this pairing, the connection may be limited to a connection with encryption. However, in the present embodiment, regardless of the presence or absence of the encryption, the two devices can establish a Bluetooth (registered trademark) connection with each other. The process of recognizing and registering as targets is called pairing.

  In pairing, the digital camera 100 becomes a peripheral, for example, and broadcasts an Advertise signal using the short-range wireless communication unit 112 to notify the surroundings of its own device. On the other hand, the smart device 200 operates as a Central, performs a Scan operation using the short-range wireless communication unit 212, and waits for an Advertise signal from the digital camera 100. Upon receiving the Advertise signal, the smart device 200 discovers the digital camera 100, requests participation by an Initiate operation, and establishes a short-range wireless communication connection. The communication partner that has established a connection by pairing is automatically connected thereafter without any special user operation as long as it is close to a communicable range.

  The public network connection unit 213 is an interface used when performing public wireless communication. The smart device 200 can communicate with another device via the public network connection unit 213. At this time, the control unit 201 realizes a call by inputting and outputting an audio signal via the microphone 214 and the speaker 215. In the present embodiment, the public network connection unit 213 is an antenna, and the control unit 101 can connect to the public network via the antenna. Note that the communication unit 211 and the public network connection unit 213 can be shared by one antenna.

  Next, the appearance of the smart device 200 will be described. FIG. 2B is a diagram illustrating an example of the external appearance of the smart device 200. The power button 205a, the home button 205b, and the touch panel 205c are operation members included in the operation unit 205 described above. When the user presses the home button 205b, the application being executed can be interrupted, and the display unit 206 can display a home screen on which another application can be selected.

  The above is the description of the smart device 200.

  In the following, a description will be given of a method of establishing a wireless LAN communication via BLE communication in order to transfer an image with only a simple operation of the smart device 200 by a simpler operation.

To further simplify the operation, it is necessary to switch the operation of the digital camera 100 depending on the system of the smart device 200. Therefore, an operation performed by the digital camera 100 for the following two smart device 200 systems and an operation of the smart device 200 at that time will be described.
A system in which a dedicated setting application provided by the system developer must be used. A system in which wireless LAN communication can be set from a user application provided by a third party who is not the system developer.

<About the flow up to image transfer in a system that requires the use of a dedicated setting application provided by the system developer>
First, the flow up to image transfer in a system in which a dedicated setting application provided by a system developer must be used will be described.

  3A and 3B are examples of a display screen of the smart device 200. The user advances the sequence shown in FIGS. 4A and 4B by viewing and operating these screens. FIGS. 4A and 4B show the flow up to image transfer between the digital camera 100 and the smart device 200 equipped with a system that must use a dedicated setting application provided by the system developer.

  The sequence in FIG. 4A starts when the smart device 200 and the digital camera 100 can communicate with each other by BLE. In a state where the connection in the BLE is established, the mark of Bluetooth (registered trademark) is displayed on the screen of the digital camera 100 as shown in a screen 320 of FIG.

  A screen 301 in FIG. 3A is an example of a home screen of the smart device 200. In S401 of FIG. 4A, the user activates an application for controlling the digital camera 100 by BLE or wireless LAN on this screen. When the application starts, a function capable of controlling the digital camera 100 is displayed as indicated by 302 in FIG. 3A.

  When the user selects a function for performing “wireless LAN connection” in S402, a wireless LAN connection request is transmitted from the smart device 200 to the digital camera 100 in S403.

  In step S403, along with the wireless LAN connection request, the smart device 200 also transmits information indicating "a system in which a dedicated setting application provided by a system developer must be used when connecting to the wireless LAN".

  Upon receiving the wireless LAN connection request, in step S404, the digital camera 100 generates an SSID and a passphrase used for the wireless LAN network generated in the AP mode. The reason why the passphrase is generated instead of PSK as the password is that the user can easily operate and set the smart device 200 in the steps described later.

  Next, in step S405, the digital camera 100 generates PSK from the passphrase using a calculation method defined by the authentication method.

  Subsequently, in step S406, the digital camera 100 transmits a wireless LAN connection response to the effect that a wireless LAN network is to be created in the AP mode to the smart device 200. This wireless LAN connection response includes the SSID / authentication / encryption method / passphrase used in the generated wireless LAN network.

  Upon receiving the wireless LAN connection response, the smart device 200 disconnects the BLE in step S407 and displays the screen shown in the screen 303 of FIG. On the screen 303, a message prompting to establish a wireless LAN connection from a dedicated setting application provided by the system developer is displayed together with the SSID and the passphrase.

  On the other hand, the digital camera 100 stops the operation of the short-range wireless communication unit 112 in S408.

  In subsequent step S409, the digital camera 100 starts transmitting a beacon in the AP mode using the SSID generated in step S404 and the PSK generated in step S405, thereby generating a wireless LAN network. At this time, the digital camera 100 displays the communication parameters as shown in a screen 321 in FIG. The user can connect to the network generated by the digital camera 100 by operating the smart device 200 while viewing the parameters displayed on this screen.

  Next, the user interrupts the application for controlling the camera with the home button 205b of the smart device 200 in S410 (screen 304 in FIG. 3A).

  Next, in step S411, the user selects and activates a dedicated setting application provided by the system development maker on the screen 303 in FIG. 3A.

  When the user selects an item related to the connection of the wireless LAN from the selection items of the setting application in S412 (the screen 304 in FIG. 3A), the smart device 200 searches for a surrounding network. Specifically, it is determined whether or not a beacon transmitted from the surrounding has been received. If received, the SSID included in the beacon is displayed on the screen (screen 305 in FIG. 3A). Each time a beacon is received, it is added to the screen 305. Next, the process proceeds to S413 in FIG.

  In S413 of FIG. 4B, the user selects a network displaying the same SSID as the SSID received from the digital camera 100 in S406, from the networks displayed on the screen 305 of FIG. 3A.

  Next, a screen for inputting a password, such as the screen 306 in FIG. 3A, is displayed on the display unit 206 of the smart device 200. On this screen, the user can operate the touch panel 205c to input the passphrase received from the digital camera 100 in S406. When the correct passphrase is input, the smart device 200 generates a PSK using a calculation method defined by the authentication method, participates in the wireless LAN network generated by the digital camera 100, and establishes a wireless LAN connection in S415.

  When the wireless LAN connection is established, a check mark is displayed on the screen of the smart device 200 as shown in a screen 307 of FIG. On the other hand, in the digital camera 100, information on the connected smart device is displayed as in a screen 322 in FIG.

  Thereafter, the user operates the home button 205c of the smart device 200 in S416 to return to the home screen (screen 308 in FIG. 3B).

  In S417, the user starts the application for controlling the digital camera 100 again on the home screen.

  In step S418, the digital camera 100 and the smart device 200 find each other on the same network using device search methods such as UPnP (Universal Plug and Play) and mDNS (multicastDNS). Then, a protocol connection for image transfer on a wireless LAN network such as PTP-IP is established.

  Next, in step S419, the digital camera 100 transmits the thumbnail image of the image file stored in the recording medium 110 to the smart device 200, and the smart device 200 displays the received thumbnail image on the display unit 206 (screen 310 in FIG. 3B). ). On the other hand, in the digital camera 100, a screen 323 is displayed to prompt the user to operate the smart device.

  The user selects a thumbnail image displayed on the display unit 206 of the smart device 200 in step S420 by operating the touch panel 205 (c), and the smart device 200 accepts an instruction to start receiving the selected image.

  Upon receiving an instruction to start receiving an image from the user, the smart device 200 requests the digital camera 100 to transmit the image selected by the user in S421.

  Upon receiving the image transmission request from the smart device 200, the digital camera 100 transmits the main image to the smart device 200 in S422 (screen 324 in FIG. 5). On the other hand, the smart device 200 stores the main image received in S423 in the recording medium 210 (screens 311 and 312 in FIG. 3B).

  The above is the flow up to image transfer between the digital camera 100 and the smart device 200 equipped with the system that requires the use of a dedicated setting application provided by the system developer.

<About the flow from a user application provided by a third party who is not a system development maker to image transfer in a system where wireless LAN communication can be set>
Next, a flow from a user application provided by a third party who is not a system development maker to image transfer in a system in which wireless LAN communication can be set will be described.

  FIG. 6 is an example of a display screen of the smart device 200. The user advances the sequence shown in FIG. 7 by viewing and operating this screen. FIG. 7 shows the flow from image transfer between the digital camera 100 and a user device provided by a third party who is not a system development maker to a smart device 200 equipped with a system capable of setting wireless LAN communication.

  The sequence in FIG. 7 starts when the smart device 200 and the digital camera 100 can communicate by BLE.

  A screen 331 in FIG. 6 represents a home screen of the smart device 200. In S731 of FIG. 7, the user activates an application for controlling the digital camera 100 by BLE or wireless LAN on this screen. When the application is activated, a function capable of controlling the digital camera 100 is displayed as in a screen 332 in FIG.

  When the user selects a function for performing “wireless LAN connection” in S732, a wireless LAN connection request is transmitted from the smart device 200 to the digital camera 100 in S733. In step S733, the smart device 200 transmits, together with the wireless LAN connection request, information indicating "a system capable of setting wireless LAN communication from a user application provided by a third party who is not a system development maker when establishing a wireless LAN connection". .

  Upon receiving the wireless LAN connection request, in step S734, the digital camera 100 generates an SSID and a PSK to be used for the wireless LAN network generated in the AP mode. Here, it is not the passphrase but the PSK that generates the PSK instead of the passphrase as the password that is actually used in the generation of the wireless LAN network. This is because of this. Further, when the smart device 200 is equipped with a system capable of setting wireless LAN communication from a user application provided by a third party, the application can automatically set PSK in the OS. No input operation is required. That is, it is not necessary to adopt a passphrase for reducing the trouble of user input, which is one of the reasons for using PSK. In addition, since the user does not need to input a passphrase, the digital camera 100 does not display a screen indicating the communication parameters to the user as in the screen 321 in FIG.

  In step S735, the digital camera 100 transmits a wireless LAN connection response notifying that a wireless LAN network is to be created in the AP mode to the smart device 200. This wireless LAN connection response includes the SSID / authentication / encryption method / PSK used in the generated wireless LAN network. Upon receiving the wireless LAN connection response, the smart device 200 disconnects the BLE in S736. When the BLE is disconnected from the smart device 200, the digital camera 100 stops the operation as the BLE of the short-range wireless communication unit 112 in S737.

  In step S738, the digital camera 100 generates a wireless LAN network by starting transmitting a beacon in the AP mode using the SSID and PSK generated in step S734.

  In step S739, the smart device 200 searches for a wireless LAN network generated by the digital camera 100, and establishes a wireless LAN network connection using the SSID / authentication / encryption method / PSK received in step S735 without user operation (see FIG. 6). Screen 334).

  In S740, a wireless LAN connection is established.

  In S741, the digital camera 100 and the smart device 200 discover the presence of a device on the same network using a device search technique such as UPnP (Universal Plug and Play) or mDNS (multicastDNS). Then, a protocol connection for image transfer on a wireless LAN network such as PTP-IP is established.

  Next, in step S742, the digital camera 100 transmits the thumbnail image of the image file stored in the recording medium 110 to the smart device 200, and the smart device 200 displays the received thumbnail image on the display unit 206 (screen 335 in FIG. 6). ).

  The user selects a thumbnail image displayed on the display unit 206 of the smart device 200 in step S743 by operating the touch panel 205c, and starts reception. Upon receiving the image reception instruction from the user, the smart device 200 requests the digital camera 100 to transmit the image selected by the user in S744.

Upon receiving the image transmission request from the smart device 200, the digital camera 100 transmits the main image to the smart device 200 in S745, and the smart device 200 stores the main image received in S746 in the recording medium 210 (screen 336 in FIG. 6). , Screen 337).
The above is the flow from the digital camera 100 and the image transfer between the digital camera 100 and the smart device 200 equipped with the system capable of setting the wireless LAN communication from the user application provided by the third party who is not the system development maker.

<Digital camera 100 flowchart>
Next, the processing of the digital camera 100 that realizes the above-described sequence will be described with reference to the flowchart in FIG.

  This flowchart is started in a state where the digital camera 100 and the smart device 200 are connected by BLE using the short-range wireless communication units 112 and 212 of each other.

  In step S801, the control unit 101 of the digital camera 100 waits for a wireless LAN connection request to be transmitted from the smart device 200 via BLE via the short-range wireless communication unit 112.

  Upon receiving the wireless LAN connection request from the smart device 200 via the short-range wireless communication unit 112, the control unit 101 determines the system of the smart device in S802. If the smart device system is a “system that requires the use of a dedicated setting application provided by the system developer” when setting the wireless LAN connection, the process proceeds to step S803. In this case, the control unit 101 of the digital camera 100 generates an SSID and a passphrase in S803.

  After that, in step S804, the control unit 101 of the digital camera 100 generates a PSK from the passphrase based on the calculation method specified by the authentication method. In step S805, the control unit 101 of the digital camera 100 transmits the SSID and the password generated in step S803 to the smart device via the short-range wireless communication unit 112.

  On the other hand, if it is determined in step S802 that the system is capable of setting wireless LAN communication from a user application provided by a third party who is not a system development maker, the process advances to step S806. In this case, the control unit 101 of the digital camera 100 generates the SSID and PSK in S806, and transmits the SSID and PSK to the smart device 200 via the short-range wireless communication unit 112 in S807.

  Next, in step S808, the control unit 101 of the digital camera 100 waits until the BLE is disconnected from the smart device 200 via the short-range wireless communication unit 112 in step S808. When detecting the BLE disconnection from the smart device 200, the control unit 101 of the digital camera 100 instructs the short-range wireless communication unit 112 to stop the BLE in S809.

  In S810, the control unit 101 of the digital camera 100 uses the communication unit 111 to generate a wireless LAN network in the AP mode using the SSID and PSK generated in S803 / S804 or S806.

  In step S811, the control unit 101 waits for the smart device 200 to join the wireless LAN network created in step S810. Upon detecting that the smart device 200 has joined the wireless LAN network, the control unit 101 connects to the smart device 200 via the communication unit 111 using an image transfer protocol over a wireless LAN such as PTP-IP. When the connection by the image transfer protocol is established, the control unit 101 extracts the thumbnail image of the image file from the recording medium 110 and transmits the thumbnail image to the smart device 200 through the communication unit 111.

  In step S814, the control unit 101 waits for receiving an image transmission request from the smart device via the communication unit 111. When receiving the image transmission request from the smart device via the communication unit 111, the control unit 101 acquires the main image from the recording medium 110 and transmits the designated main image to the smart device 200 via the communication unit 111.

  When the image transmission is completed by a user operation or the like and the connection of the wireless LAN is terminated, the communication in BLE is automatically restarted.

  As described above, the digital camera according to the present embodiment switches between passing a passphrase and passing a PSK as a password for a wireless LAN network that is activated and generated in the AP mode according to the OS of the smart device. As a result, both maintaining security and enabling smooth wireless LAN connection can be achieved.

[Other Embodiments]
In the above-described embodiment, the system in which the BLE and the wireless LAN cannot be used simultaneously (exclusively) due to the factor of the digital camera 100 or the smart device 200 has been described. In this regard, when both can use the BLE and the wireless LAN at the same time, the wireless LAN connection may be performed without disconnecting the BLE.

  In the above-described embodiment, the handover from the BLE to the wireless LAN has been described as an example. This may be applied to a handover from NFC to a wireless LAN by mounting NFC, for example.

  Alternatively, NFC has a limited amount of data that can be transmitted at one time from BLE, so in consideration of a desire to reduce the amount of data, in the case of handover from NFC to a wireless LAN, the type of OS of the smart device is Regardless, the passphrase may always be shared.

  The present invention supplies a program for realizing one or more functions of the above-described embodiments to a system or an apparatus via a network or a recording medium, and one or more processors in a computer of the system or the apparatus read and execute the program. This process can be realized. Further, it can also be realized by a circuit (for example, an ASIC) that realizes one or more functions.

Claims (13)

First communication means for communicating with the external device via the first wireless communication,
A second communication unit that communicates with the external device via a second wireless communication different from the first wireless communication,
Generating means for generating a communication parameter used in the first wireless communication,
The first communication is performed when at least one of a case in which communication with the external device is performed by the second communication unit and a case in which an instruction to communicate with the external device through the first communication unit is received from a user occurs. Control means for controlling communication with the external device by means,
The generating means may be an operating system of the external device, a first operating system capable of changing a setting of a first communication unit of the external device from an arbitrarily installable application, or an arbitrarily installable application. Depending on whether it is a second operating system that cannot change the setting of the first communication means of the external device, if the format of the communication parameter used when communicating with the external device via the first wireless communication is different, A communication device, characterized in that When the operating system of the external device is a first operating system capable of changing a setting of a first communication unit of the external device from an arbitrarily installable application, the generation unit includes a communication parameter of a first format. Produces
When the operating system of the external device is a second operating system that cannot change the setting of the first communication unit of the external device from an arbitrarily installable application, the generation unit includes a communication parameter of a second format. Produces
The communication device according to claim 1, wherein the communication parameter of the first format can be generated from the communication parameter of the second format. When the communication parameter of the second format is shared with the external device by the second communication unit, the control unit uses the communication parameter of the first format generated from the communication parameter of the second format. 3. The communication device according to claim 2 , wherein the first communication unit controls the communication with the external device. Wherein said first communication parameter is PSK, the communication apparatus according to claim 2 or 3, wherein the second communication parameter is passphrase. Communication device according to any one of claims 1 to 3 wherein the communication parameter is characterized in that it is a security key. When communicating with the external device by the second communication unit and sharing the communication parameter, the control unit communicates with the external device by the first communication unit using the shared communication parameter. The communication device according to any one of claims 1 to 5 , wherein the communication device performs control. The communication according to any one of claims 1 to 6 , wherein the first communication unit generates a network by the first communication by transmitting a beacon, and waits for access from the external device. apparatus. Further comprising an imaging means for imaging the subject and generating image data;
The first communication unit transmits image data generated by the imaging unit,
It said second communication means, the communication device according to any one of claims 1 to 7, characterized in that does not transmit the image data generated by the imaging means. Communication device according to any one of claims 1 to 8 wherein the first communication means a second communication means characterized in that it operates exclusively. 10. The communication device according to claim 9 , wherein when the communication by the first communication unit is completed, the control unit controls to start the communication by the second communication unit. 2. The information processing apparatus according to claim 1, further comprising: receiving information about an operating system of the external device from the external device using the second communication unit, and determining a type of the operating system of the external device based on the information. The communication device according to any one of claims 10 to 10 . Communication having a first communication means for communicating with an external device via a first wireless communication, and a second communication means for communicating with the external device via a second wireless communication different from the first wireless communication A method for controlling an apparatus, comprising:
Generating a communication parameter used in the first wireless communication,
The first communication is performed when at least one of a case in which communication with the external device is performed by the second communication unit and a case in which an instruction to communicate with the external device through the first communication unit is received from a user occurs. Controlling the device to communicate with the external device by means,
In the generating step, the operating system of the external device is a first operating system capable of changing the setting of the first communication unit of the external device from an arbitrarily installable application or an arbitrarily installable application. Depending on whether it is a second operating system that cannot change the setting of the first communication means of the external device, if the format of the communication parameter used when communicating with the external device via the first wireless communication is different, A method for controlling a communication device, comprising: Computer, claims 1 to 11 or to function as each unit of the communication apparatus according to item 1, the computer readable program.

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