JP2018121260A - Communication device, control method of communication device, program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem in which execution of service via Bluetooth may not be smooth, during wireless LAN connection of a communication device with other device.SOLUTION: A communication device has control means for controlling changeover processing for breaking connection with an external device by first communication means and connecting with the external device via second communication means, when receiving an operation requiring execution of a service using the second communication means from the user by the first communication means during connection with the external device. When the external device connected via the second communication means is a communication partner with the first communication means broken by the changeover processing, the control means requests start of the service, and when the external device connected via the second communication means is not the communication partner with the first communication means broken by the changeover processing, the control means controls not to request start of the service.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a communication device that communicates with an external device by wireless communication.

  In recent years, a model in which a digital camera has a plurality of wireless communication functions and is connected to a mobile phone wirelessly is known. For example, Patent Document 1 discloses a digital camera that is equipped with a wireless LAN and Bluetooth (registered trademark) and is wirelessly connected to a mobile phone.

Japanese Patent Laying-Open No. 2015-088789

  In a digital camera or the like equipped with both wireless LAN and Bluetooth communication means, there is a concern that radio wave interference may occur depending on the configuration of the communication module. This is because the wireless LAN IEEE802.11b / g / n and Bluetooth are both a communication standard using the same communication frequency band. In order to avoid radio wave interference, a configuration is possible in which both communications are excluded, that is, Bluetooth is not used when the wireless LAN is used, and conversely, the wireless LAN is not used when Bluetooth is used. In this case, even if a means for switching the connection from Bluetooth to the wireless LAN is provided, it is necessary to provide a state in which both communications are once disconnected. Therefore, the mobile phone needs to acquire in advance the SSID and password of the wireless LAN network created by the camera as information necessary for switching the connection to the target wireless LAN network during the Bluetooth connection before switching. There is. On the other hand, if the Bluetooth communication is paired between devices, it is possible to connect without collecting information necessary for switching at the switching timing.

  On the other hand, a cellular phone can use a wireless LAN and Bluetooth at the same time. In the mobile phone, a plurality of cameras can be connected via Bluetooth communication.

  Under these circumstances, when the camera uses a Bluetooth-dedicated function while the camera is connected to the mobile phone with the wireless LAN, the camera must disconnect the wireless LAN and reconnect the Bluetooth. At this time, if a service request is received from another camera connected via Bluetooth before the mobile phone is reconnected via Bluetooth, the service request from the original camera may not be met. For example, there is a case where the service is a function that can serve only one camera among a plurality of cameras connected by Bluetooth. For example, it is expected that a service that allows a mobile phone to function as a camera remote control is not assumed to be executed simultaneously with a plurality of cameras.

  In view of the above, an object of the present invention is to make it easier to execute a service via Bluetooth when a mobile phone is connected to another device via a wireless LAN.

  In order to achieve the above object, a communication device according to the present invention includes a first communication unit connected to an external device by a first communication, a second communication unit connected to the external device by a second communication, When an operation requesting execution of a service using the second communication unit is received from a user while the first communication unit is connected to the external device, the connection to the external device by the first communication unit And a control means for controlling a switching process for connecting to the external device via the second communication means, and the external device connected via the second communication means is controlled by the switching process. When the communication partner is the disconnected first communication means, the control means requests the external device to start the service, and the external device connected via the second communication means Switching If not communicating party by the first communication means is cut by the processing, the control unit may be controlled so as not to require a start of the service to the external device.

  According to the present invention, it is possible to more smoothly execute a service via Bluetooth when a mobile phone is connected to another device via a wireless LAN.

1 is a block diagram and an external view of a digital camera according to a first embodiment. It is the block diagram and external view which show the structure of the mobile telephone in 1st Embodiment. It is the schematic which shows the connection form of the digital camera and mobile telephone in 1st Embodiment. It is a state transition diagram of the mobile phone in the connection state with the digital camera in the first embodiment. It is an example of the screen displayed on the display part of the mobile telephone in 1st Embodiment. 6 is a flowchart illustrating an operation of the mobile phone when switching from BLE to wireless LAN connection in the first embodiment. 6 is a flowchart illustrating an operation of the mobile phone when switching from BLE to wireless LAN connection in the first embodiment. (A) It is a flowchart which shows operation | movement of the mobile telephone which receives the wireless LAN or BLE function start request | requirement from 2nd Embodiment from a digital camera. (B) It is a flowchart which shows operation | movement of the digital camera which transmits the wireless LAN or BLE function start request | requirement to a mobile phone in 2nd Embodiment.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail using attached drawing.

  The embodiment described below is an example as 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. Moreover, it is also possible to combine each embodiment suitably.

[First Embodiment]
<Configuration of digital camera>
FIG. 1A is a block diagram illustrating a configuration example of a digital camera 100 that is an example of a communication apparatus according to the present embodiment. Although a digital camera is described here as an example of a 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 the processing to control the entire apparatus.

  The imaging unit 102 includes, for example, an optical lens unit, an optical system that controls the aperture, zoom, focus, and the like, and an imaging device that converts light (video) introduced through the optical lens unit into an electrical video signal. Composed. In general, a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device) is used as the imaging element. 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 electrical signal by the imaging device, and perform noise reduction processing or the like to convert the 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 / recordable non-volatile memory, and stores a program to be described later executed by the control unit 101.

  The work memory 104 is used as a buffer memory that temporarily holds image data picked up by the image pickup 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 for the user to accept 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 digital camera 100, a release switch for instructing photographing, and a reproduction button for instructing reproduction of image data. Furthermore, an operation member such as a dedicated connection button for starting communication with an external device via the communication unit 111 described later is included. A touch panel formed on the 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. As a result, an instruction for making preparations for shooting such as AF (autofocus) processing, AE (automatic exposure) processing, AWB (auto white balance) processing, and EF (flash pre-emission) processing is accepted. Further, when the release switch is in a fully-pressed state, SW2 is turned on. As a result, an instruction for photographing is received.

  The display unit 106 displays a viewfinder image at the time of shooting, displays shot image data, and displays characters for interactive operation. Note that the display unit 106 is not necessarily 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 for 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 a means for accessing at least the recording medium 110.

  The communication unit 111 is an interface for connecting to an external device. The digital camera 100 of this 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 addition, imaging by the imaging unit 102 can be controlled from an external device via the communication unit 111. In the present embodiment, the communication unit 111 includes an interface for communicating with an external apparatus via a so-called wireless LAN in accordance with 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 a wireless signal. The short-range wireless communication unit 112 outputs a modulated wireless signal from the antenna and demodulates the wireless signal received by the antenna, thereby realizing short-range wireless communication in accordance with the IEEE 802.15 standard (so-called Bluetooth). In this embodiment, the Bluetooth communication employs Bluetooth Low Energy version 4.0 (hereinafter referred to as BLE), which has low power consumption. This BLE communication has a narrower communicable range than wireless LAN communication (that is, a communicable distance is short). BLE communication has a lower communication speed than wireless LAN communication. On the other hand, BLE communication consumes less power than wireless LAN communication. The digital camera 100 of this embodiment can exchange data with an external device via the short-range wireless communication unit 112. For example, imaging by the imaging unit 102 can be controlled from an external device via the communication unit 111. However, since the communication speed is low, the image data generated by the imaging unit 102 is not transmitted.

  Note that the communication unit 111 of the digital camera 100 in this embodiment has an AP mode that operates as an access point in the infrastructure mode, and a CL mode that operates as a client in the infrastructure mode. Then, by operating the communication unit 111 in the CL mode, the digital camera 100 in the present embodiment can operate as a CL device in the infrastructure mode. When the digital camera 100 operates as a CL device, it can participate in a network formed by the AP device by connecting to a peripheral AP device. In addition, by operating the communication unit 111 in the AP mode, the digital camera 100 according to the present embodiment is a kind of AP, but operates as a simple AP (hereinafter referred to as a simple AP) with more limited functions. Is also possible. When the digital camera 100 operates as a simple AP, the digital camera 100 forms a network by itself. Devices around the digital camera 100 can recognize the digital camera 100 as an AP device and participate in a network formed by the digital camera 100. It is assumed that a program for operating the digital camera 100 is held in the nonvolatile memory 103 as described above.

  Note that although the digital camera 100 in this embodiment is a kind of AP, it 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. 1B and 1C are diagrams illustrating an example of the appearance of the digital camera 100. FIG. The release switch 105a, the playback button 105b, the direction key 105c, and the touch panel 105d are operation members included in the operation unit 105 described above. Further, the display unit 106 displays an image obtained as a result of imaging by the imaging unit 102.

  The above is the description of the digital camera 100.

<Internal configuration of mobile phone 200>
FIG. 2 is a block diagram illustrating a configuration example of the mobile phone 200 that is an example of the information processing apparatus of the present embodiment. Although a mobile phone is described here as an example of the information processing apparatus, the information processing apparatus is not limited to this. For example, the information processing apparatus may be a digital camera with a wireless function, a tablet device, or a personal computer.

  The control unit 201 controls each unit of the mobile phone 200 according to an input signal and a program described later. Note that instead of the control unit 201 controlling the entire apparatus, the entire apparatus may be controlled by a plurality of pieces of hardware sharing the processing.

  The imaging unit 202 converts subject light imaged by a lens included in the imaging unit 202 into an electrical signal, performs noise reduction processing, and outputs digital data as image data. The captured image data is stored in the buffer memory, and then a predetermined calculation is performed by the control unit 201 and recorded on the recording medium 210.

  The nonvolatile memory 203 is an electrically erasable / recordable nonvolatile memory. The nonvolatile memory 203 stores an OS (operating system) that 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, the nonvolatile memory 203 stores a camera application (hereinafter referred to as an application) for communicating with the digital camera 100 and remotely controlling the digital camera 100.

  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 mobile phone 200 from the user. The operation unit 205 includes, for example, operation members such as a power button for the user to instruct ON / OFF of the power supply of the mobile phone 200 and a touch panel formed on the display unit 206.

  The display unit 206 displays image data, characters for interactive operation, and the like. Note that the display unit 206 is not necessarily provided in the mobile phone 200. The mobile phone 200 can be connected to the display unit 206 and has at least a display control function for controlling the display of the display unit 206.

  The mobile phone 200 according to the present embodiment has a touch panel capable of detecting contact with the display unit 206 as one of the operation units 205, and the touch panel and the display unit 206 are integrally configured. For example, a touch panel is configured so that display by the display unit 206 is not hindered by light transmittance, and the touch panel is attached to the upper layer of the display surface of the display unit 206. Then, the input coordinates on the touch panel are associated with the display coordinates on the display unit 206. Thereby, it is possible to configure a GUI as if the user can directly operate the screen displayed on the display unit 206. In addition, the touch panel uses any one of various touch panels, such as a resistive film method, a capacitance method, a surface acoustic wave method, an infrared method, an electromagnetic induction method, an image recognition method, and an optical sensor method. Also good.

The control unit 201 can detect the following operations on the touch panel.
(1) Touching the touch panel with a finger or a pen (hereinafter referred to as touch-down).
(2) The touch panel is touched with a finger or a pen (hereinafter referred to as touch-on).
(3) The touch panel is moved while being touched with a finger or a pen (hereinafter referred to as a move).
(4) The finger or pen touching the touch panel is released (hereinafter referred to as touch-up).
(5) The touch panel is in a state where nothing is touched (hereinafter referred to as touch-off).

  These operations and information on the position coordinates where the finger or pen touches the touch panel are notified to the control unit 201, and what operation has been performed on the touch panel based on the notified information. Determine. Regarding the move, the moving direction of the finger or pen moving on the touch panel can also be determined for each vertical component / horizontal component on the touch panel based on the change in position coordinates. Further, it is assumed that a stroke is drawn when touch-up is performed on the touch panel through a certain move from touch-down. Hereinafter, an operation of drawing a stroke quickly is called a flick. A flick is an operation of quickly moving a certain distance while touching a finger on the touch panel and then releasing it, in other words, an operation of quickly tracing a finger on the touch panel. If it is detected that a movement over a predetermined distance is performed at a predetermined speed or more, and a touch-up is detected as it is, it is determined that a flick has been performed. In addition, when it is detected that the movement is performed at a predetermined distance or more and less than a predetermined speed, it is determined that the drag has been performed.

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

  The communication unit 211 is an interface for connecting to an external device. The mobile phone 200 of this 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 be connected to the digital camera 100 via the antenna. In connection with the digital camera 100, it may be connected 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. Note that communication with the digital camera 100 is not limited to this. For example, the communication unit 211 can include a wireless communication module such as an infrared communication module, a Bluetooth communication module, or a WirelessUSB.

  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 a wireless signal. The short-range wireless communication unit 212 outputs a modulated wireless signal from the antenna and demodulates the wireless signal received by the antenna, thereby realizing short-range wireless communication in accordance with the IEEE 802.15 standard (so-called Bluetooth). In the present embodiment, Bluetooth communication uses Bluetooth Low Energy version 4.0 (hereinafter referred to as BLE), which has low power consumption, as in the configuration of the digital camera 100 described above.

  In short-range wireless communication with the digital camera 100 in the present embodiment, it is necessary to first connect to the short-range wireless communication unit 112 of the digital camera 100 by an operation for 1: 1 connection in short-range wireless communication called pairing. There is. In the pairing operation, for example, the digital camera 100 becomes a BLE peripheral device, and periodically transmits a signal called “Advertise” for notifying the existence of itself to the surroundings using the short-range wireless communication unit 112. Then, the mobile phone 200 operates as a Central and performs a Scan operation using the short-range wireless communication unit 212, thereby detecting the Digital camera 100 by receiving the Advertise from the digital camera 100. When the digital camera 100 is found, the mobile phone 200 establishes a short-range wireless communication connection by making a participation request through an Initiate operation.

  The public network communication unit 213 is an interface used when performing public wireless communication. The mobile phone 200 can talk with other devices via the public network communication unit 213. At this time, the control unit 201 inputs and outputs an audio signal via the microphone 214 and the speaker 215, thereby realizing a call. In the present embodiment, the public network communication unit 213 is an antenna, and the control unit 101 can be connected to the public network via the antenna. Note that the communication unit 211 and the public network communication unit 213 can be shared by a single antenna.

  Next, the appearance of the mobile phone 200 will be described. FIG. 2B is a diagram showing an example of the appearance of the mobile phone 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 is interrupted, and a home screen on which another application can be selected can be displayed on the display unit 206.

  The above is the description of the mobile phone 200.

<Camera and mobile phone system diagram>
Next, a connection form between the mobile phone 200 and the digital camera 100 in this embodiment will be described.

  FIG. 3A shows a state in which the mobile phone 200 and the digital camera 100 are connected by BLE communication. In this state, as described in the description of the internal configuration of the mobile phone described above, the mobile phone 200 is operated by the short distance wireless communication of the digital camera 100 by an operation for 1: 1 connection in short distance wireless communication called pairing first. It is necessary to connect to the communication unit 112. The Advertise from the digital camera 100 is received by performing the Scan operation using the short-range wireless communication unit 212. As a result, the digital camera 100 is discovered, and when the digital camera 100 is discovered, the mobile phone 200 establishes a connection by the Initiate operation. In this state, execution of a BLE function that can be executed by BLE communication can be started.

  FIG. 3B shows a state where the mobile phone 200 and the digital camera 100 are connected via a wireless LAN. As described above, the communication unit 111 of the digital camera 100 has an AP mode and a CL mode. In the AP mode, the mobile phone 200 joins a simple AP network formed by the digital camera 100 to establish a wireless LAN connection. can do. In this state, the execution of a wireless LAN function that can be executed by wireless LAN communication can be started.

  In this embodiment, the digital camera 100 excludes wireless LAN and BLE communication in order to avoid radio wave interference. That is, Bluetooth is not used while using the wireless LAN. Conversely, the wireless LAN is not used while using Bluetooth. Among them, the BLE communication function and the wireless LAN communication function can be used by switching between the state of FIG.

  In the present embodiment, it is assumed that the mobile phone 200 can establish a BLE connection simultaneously with a plurality of digital cameras 100 as shown in FIG. For this reason, even if a mobile phone establishes a BLE connection with any camera, it can continue to perform a Scan operation and receive the Advertise from the digital camera 100 to find and connect to the digital camera 100. However, in this embodiment, in order to prevent the specification and the system from becoming complicated, only one unit can use the BLE function even when a plurality of cameras can be connected.

  Even when connected to a plurality of cameras by BLE communication, the wireless LAN function can be used as shown in FIG. 3D by switching from BLE communication to wireless LAN connection for one selected by the user. However, in this embodiment, in order to prevent complication of the specification and the system, only one camera can be connected to the wireless LAN, and the wireless LAN connection request of other cameras is not accepted during the wireless LAN connection.

<Mobile phone state transition diagram>
Next, state transition of the mobile phone 200 will be described with reference to FIG.

  In the mobile phone 200, a state in which an application for executing a function connected to the digital camera 100 is activated is a state 400. At this time, camera search processing is performed in both BLE communication and wireless LAN communication so that a connection request for BLE communication or wireless LAN communication from the camera can be received.

  In the state 400, when a camera is found by BLE communication, a BLE connection is established with the found camera, and the state transitions to the state 401.

  In the state 401, since the BLE connection is established at the same time as a plurality of cameras in the state 401 as described above, the BLE connection is similarly established in the state 401 when the camera is continuously searched by the BLE communication and the camera is found. To do. If disconnection of the BLE communication is detected and no unit is connected, the process returns to the state 400.

  In the state 401, the BLE function can be used, and when the function is started, the state transitions to the state 402. However, in this embodiment, the function cannot be used simultaneously for a plurality of units. When a plurality of cameras are connected in the state 401, the BLE function is started on the target camera by accepting a request for selecting one camera from the plurality of connected cameras at the time of execution as the state 405.

  On the other hand, in the state 400, when a camera is found by wireless LAN communication, a wireless LAN connection is established with the found camera, and the state transitions to the state 403.

  In the state 403, the wireless LAN function can be used, and when the function starts, the state transitions to the state 404. As described above, in the present embodiment, unlike BLE communication, only one camera can always be connected by wireless LAN communication.

  In this embodiment, the wireless LAN function can be started from the BLE connection in the state 401. In the state 401, when the user operates the application to request the start of wireless LAN function execution, the connection is switched from the BLE communication to the wireless LAN communication with the target camera, and the state transitions to the state 403. Then, the wireless LAN function can be started by automatically transitioning to the state 404. At this time, if a plurality of cameras are connected in the state 401, a request for selecting one of the plurality of cameras connected to the user at the time of execution is received as the state 406, and the target camera switches to a wireless LAN connection. The wireless LAN function is started.

  In the present embodiment, the BLE function can be used while the wireless LAN is connected in the state 403. In state 403, when the user operates the application to request the start of execution of the BLE function, the connection with the target camera is switched from wireless LAN communication to BLE communication, the state transitions to state 401, and then the state automatically transitions to state 402. The BLE function can be started.

<Example of mobile phone screen>
Next, a screen example of an application executed on the mobile phone 200 will be described with reference to FIG.

  FIG. 5A shows a main screen 500 of the application according to the present embodiment. Regardless of the connection state of the camera by BLE or wireless LAN communication, the display is performed on the display unit 206 of the mobile phone 200 in the state 400, state 401, and state 403 where the function is not yet executed.

  On the main screen 500, buttons corresponding to executable functions are arranged.

  A button 501 is a button for starting a function when image data stored in the storage medium 110 of the digital camera 100 is displayed on an application. This function is a function that can be executed during wireless LAN communication with a camera having a high communication speed in order to transfer image data.

  A button 502 is a remote shooting function that allows a user to instruct shooting while repeatedly acquiring a live view image from the digital camera 100 and displaying the live view image on an application and viewing the screen of the digital camera through the screen of the mobile phone 200. It is a button to start. This function is also a function that can be executed during wireless LAN communication with a camera having a high communication speed. An example of a screen when executing this function is as shown in FIG.

  A button 503 is a button for starting a remote control function in which the user can only instruct photographing of the digital camera without displaying a live view table from the digital camera 100. This function is a function that can be executed during BLE communication with the camera because the amount of communication data is small. A screen example when this function is executed is as shown in FIG.

  A connection state display area 504 arranged at the bottom of the main screen 500 displays the current connection state with the camera. If no camera corresponding to the state 400 is connected, the label “not connected” is displayed. If the camera is connected by BLE communication corresponding to the state 401, the camera name is displayed as a camera identification information together with a mark indicating BLE connection. When a plurality of cameras are connected by BLE communication, a “multiple cameras” label is displayed together with a mark indicating BLE connection. If the camera is connected by wireless LAN communication corresponding to the state 403, only the camera name is displayed as a label.

  When the user operates the button of each function on the main screen 500, the screen transitions to the target function screen. For example, the button 502 displays a screen 520 displayed in FIG. The button 503 displays a screen 530 displayed in FIG.

  In the BLE connection state corresponding to the state 401 on the main screen 500, when two or more cameras are connected, the front of the main screen 500 is displayed as shown in FIG. A multiple camera selection dialog 510 is displayed. When an operation for selecting a target camera is received from the user, the selected camera and the BLE function can be started, or the target function can be started by switching to wireless LAN communication.

  Subsequently, operations of the mobile phone 200 and the digital camera 100 for realizing the above-described operation will be described in detail.

<Operation of mobile phone when switching from BLE to wireless LAN connection>
FIG. 6A is a flowchart showing an operation of the mobile phone 200 when a function is started in response to a user operation on the main screen 500 in a state 401 during BLE communication connection.

  In step S <b> 1101, the control unit 201 determines whether a start request for a function requiring wireless LAN communication, such as the remote shooting button 502, among the function buttons on the main screen 500 is received in the state 401.

  If it is determined in step S1101 that the wireless LAN function start request has been received from the user, the process advances to step S1102.

  In step S1102, the control unit 201 requests the digital camera 100 to switch to wireless LAN connection through BLE communication.

  In step S1103, the control unit 201 receives network information formed by the camera using the simple AP function. The network information here means information necessary for the mobile phone 200 to participate in the network, such as an SSID and a password. The network information may not be acquired at this timing, but may be acquired from the digital camera 100 in advance when BLE communication is established. When the network information is acquired from the digital camera 100, the process proceeds to step S1104. If an error is returned from the digital camera 100 or information cannot be acquired within a predetermined time, the processing is interrupted and terminated.

  In step S1104, the control unit 201 participates in the wireless LAN network formed by the camera and requests connection with the camera. If it is determined that the connection has been established, the process advances to step S1106 to transmit a request for starting the desired wireless LAN function to the camera to start the function.

  On the other hand, if no start request for the wireless LAN function is received from the user on the main screen 500 in step S1101, it is determined in step S1107 whether there is a start request for the BLE function. If there is a request for starting the BLE function, in step S1108, the start request for the target BLE function is transmitted to the digital camera 100 by BLE communication.

<Camera operation when switching from BLE to wireless LAN connection>
FIG. 6B is a flowchart showing an operation of the digital camera 100 when a function is started in response to a request from the mobile phone 200 in the state 401 in which the BLE communication is connected.

  In step S <b> 1201, the control unit 101 determines whether a request for switching to the wireless LAN connection is received from the mobile phone 200. If it is determined that it has been received, the process proceeds to step S1202.

  In step S <b> 1202, the control unit 101 transmits network information formed by the simple AP function to the mobile phone 200.

  Subsequently, in step S1203, the control unit 101 disconnects the BLE communication, and forms a network in step S1204.

  Thereafter, in step S1205, the control unit 101 waits for participation of the mobile phone in the formed network and establishment of a connection. If the connection is established, the process proceeds to step S1206.

  In step S1206, the control unit 101 waits for a function start request from the mobile phone 200 through wireless LAN communication, and upon receiving the request, starts the wireless LAN function requested in step S1207.

  On the other hand, if a request for switching to the wireless LAN connection from the mobile phone 200 is not received in step S1201, the process proceeds to step S1208.

  In step S1208, the control unit 101 determines whether there is a BLE function start request. If there is a request to start the BLE function, the requested BLE function is started in step S1209.

<Operation of mobile phone when switching from wireless LAN to BLE connection>
FIG. 7A is a flowchart showing the operation of the mobile phone 200 when the BLE function is started in response to a user operation on the main screen 500 in the state 403 during wireless LAN communication connection.

  In step S <b> 2101, the control unit 201 determines whether a start request for a function requiring BLE communication from a user such as the button 503 among the function buttons on the main screen 500 is received in the state 403.

  If it is determined in step S2101 that a BLE function start request has been received from the user, the process advances to step S2102.

  In step S2102, the control unit 201 stores identification information of the digital camera 100 currently connected. The identification information is other information as long as it can be acquired even after the connection to the BLE communication is switched, such as the MAC address of the wireless LAN module or BLE module of the camera, the serial number of the camera, or the internal UUID. Also good. When the identification information of the digital camera 100 is stored, the process proceeds to step S2103.

  In step S2103, the control unit 201 requests the digital camera 100 to disconnect from the wireless LAN connection. Note that the wireless LAN function of the mobile phone 200 remains effective even after the wireless LAN connection is disconnected. That is, the connection with other devices is maintained. However, searching for an external device using a wireless LAN is not executed during scanning by BLE communication in the subsequent processing.

  Subsequently, in step S2104, the control unit 201 starts searching for a camera through BLE communication. That is, so-called scan processing is executed.

  In step S2105, the control unit 201 sets a time-out whether a predetermined time has passed or not, and if a camera is found in step S2106, the process continues until it can be confirmed in step S2107 that the camera has been paired. If a paired camera is found through these processes, a connection for BLE communication is requested to the camera in step S2108.

  Subsequently, in step S2109, the control unit 201 acquires identification information from the camera by BLE communication. The identification information acquired here is information that can be compared with information acquired by BLE communication during BLE connection in step S2103. The acquired identification information is compared with the information stored in step S2103. If it is determined in step S2110 that they are the same camera, the BLE function is started in step S2111. If it is determined in step S2110 that they are not the same camera, the process returns to step S2105 and is repeated for a predetermined time until the same camera can be found. If the same camera is not found within a predetermined time, the process is interrupted and the process ends with an error. Note that the BLE connection with the cameras that have been connected so far but have been paired but are not the same is maintained.

  On the other hand, if no start request for the BLE function from the user is received on the main screen 500 in step S2101, the control unit 201 determines in step S2112 whether there is a start request for the wireless LAN function. If there is a request for starting the wireless LAN function, in step S2113, a request for starting the target wireless LAN function is transmitted to the digital camera 100 by wireless LAN communication.

<Camera operation when switching from wireless LAN to BLE connection>
FIG. 7B is a flowchart showing an operation of the digital camera 100 when a function is started in response to a request from the mobile phone 200 in the state 403 during wireless LAN communication connection.

  In step S2201, the control unit 101 determines whether a wireless LAN connection disconnection request has been received from the mobile phone 200. If it is determined that it has been received, the process proceeds to step S2202.

  In step S2202, the control unit 101 terminates the network formed by the simple AP function in order to disconnect the wireless LAN connection.

  In step S2203, the control unit 101 starts transmitting an BLE communication advertisement signal in order to establish a connection for BLE communication.

  Thereafter, in step S2204, the control unit 101 waits for reception of a BLE connection request from the mobile phone 200. If the connection is established, the process proceeds to step S2205.

  In step S2205, the control unit 101 waits for a BLE function start request from the mobile phone 200 through BLE communication, and upon receiving the request, starts the BLE function requested in step S2206.

  On the other hand, if the wireless LAN connection disconnection request is not received from the mobile phone 200 in step S2201, the control unit 101 determines in step S2207 whether there is a wireless LAN function start request. If there is a request to start the wireless LAN function, the requested wireless LAN function is started in step S2208.

  The above is the description of the first embodiment. In the present embodiment, when switching communication, it is determined whether or not the communication partner before switching. This makes it possible to select a communication partner to execute the service more smoothly. In addition, the connection itself is maintained even with other communication partners. Thereby, when the service with a certain apparatus is complete | finished, the start of a service with another apparatus can be made smoother. That is, since it is not necessary to make a connection with another device again, the procedure and time for the connection can be saved.

[Second Embodiment]
In the second embodiment, the operation when a wireless LAN or BLE function start request is sent from another digital camera 100 when the mobile phone 200 is already using the wireless LAN or BLE function with the digital camera 100 will be described. To do.

  As functions that can be started by an operation from the digital camera 100, there are two main functions: image data transmission and position information acquisition. Image data transmission is a function of switching communication to a wireless LAN and transmitting image data captured by the digital camera 100 to the mobile phone 200 while the digital camera 100 and the mobile phone 200 are connected by BLE. This function is a wireless LAN function performed by wireless LAN communication. On the other hand, acquisition of position information is a function in which the digital camera 100 goes to acquire position information acquired by the mobile phone 200 while the digital camera 100 and the mobile phone 200 are connected by BLE. This function is a BLE function performed by BLE communication.

  Note that the second embodiment also includes the digital camera 100 and the mobile phone 200, and the communication between the digital camera 100 and the mobile phone 200 is the same as that of the first embodiment, and thus the description of the components is omitted. .

  Further, since the state transition of the mobile phone 200 and the operation of the application are the same as those in the first embodiment, description thereof will be omitted.

<Operation of mobile phone when wireless LAN or BLE function start request is sent from camera>
When the cellular phone 200 is already in a wireless LAN connection 403, wireless LAN function in use 404, or BLE function in use 402, a wireless LAN or BLE function start request is sent from another digital camera 100 The operation of the mobile phone will be described. Here, it demonstrates using the flowchart of Fig.8 (a).

  As described in the first embodiment, the mobile phone 200 can establish wireless LAN communication with only one digital camera 100. Further, the function can be used only by one digital camera 100 in any communication of wireless LAN connection and BLE connection.

  In step S <b> 3101, the control unit 201 determines whether a wireless LAN function start request is received from the digital camera 100. If it is determined that the wireless LAN function start request has been received from the digital camera 100, the process advances to step S3103. If the wireless LAN function start request has not been received, the process proceeds to step S3102.

  In step S <b> 3102, the control unit 201 determines whether a BLE function start request is received from the digital camera 100. If it is determined that a BLE function start request has been received from the digital camera 100, the process advances to step S3103. If the BLE function start request has not been received, the process ends.

  In step S3103, the control unit 201 determines whether the digital camera 100 different from the digital camera 100 that has transmitted the request in step S3101 or step S3102 and the mobile phone 200 are already connected to the wireless LAN. If it is determined that the wireless LAN connection is already established with another digital camera 100, the process advances to step S3105. If it is determined that the wireless LAN connection is not established with another digital camera 100, the process advances to step S3104.

  In step S3104, the control unit 201 determines whether the digital camera 100 different from the digital camera 100 that sent the request in step S3101 or step S3102 and the mobile phone 200 are already using the BLE function. If it is determined that the BLE function is already being used with another digital camera, the process advances to step S3105. If it is determined that the BLE function is not being used with another digital camera, the process advances to step S3106.

  In step S3105, the control unit 201 returns an error to the digital camera 100 that has transmitted the wireless LAN or BLE function start request. In this case, the BLE connection with the digital camera 100 that has sent the BLE function start request is maintained.

  In step S3106, the control unit 201 returns OK to the digital camera 100 that has transmitted the wireless LAN or BLE function start request.

  In step S3107, the function use with the requested digital camera 100 is started.

<Operation of the digital camera when sending a wireless LAN connection request or BLE function use request to a mobile phone>
An operation when the digital camera 100 transmits a wireless LAN or BLE function start request to the mobile phone 200 will be described with reference to FIG.

  In step S3201, the control unit 101 sends a wireless LAN or BLE function start request to the mobile phone 200.

  In step S3202, a timeout is set to determine whether a predetermined time has elapsed. If the predetermined time has elapsed, the process proceeds to step S3205. If a response to the request in step S3201 is received from the mobile phone 200 in step S3203 before the predetermined time elapses, the process proceeds to step S3204.

  In step S3204, the control unit 101 determines whether the response received in step S3203 is NG. If it is NG, the process proceeds to step S3205. If it is not NG, the process proceeds to step S3206.

  In step S3205, the control unit 101 displays an error message indicating that communication could not be established on the display unit 106 of the digital camera 100.

  In step S <b> 3206, the control unit 101 starts using the function transmitted in step S <b> 3201 with the mobile phone 200.

  The above is the description of the second embodiment. In the second embodiment, when a request from the digital camera 100 that cannot be accepted is received, the mobile phone 200 surely returns an error. This eliminates the need to disconnect from the digital camera 100 that is already connected and in use. In addition, the digital camera 100 that has sent the request does not have to wait.

  The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, etc.) of the system or apparatus reads the program code. It is a process to be executed. In this case, the program and the storage medium storing the program constitute the present invention.

Claims (10)

A first communication means for connecting to an external device through a first communication;
Second communication means for connecting to the external device by second communication;
When an operation requesting execution of a service using the second communication unit is received from a user while the first communication unit is connected to the external device, the connection to the external device by the first communication unit And a control means for controlling a switching process for connecting to the external device via the second communication means,
When the external device connected via the second communication means is a communication partner of the first communication means disconnected by the switching process, the control means starts the service to the external device. Request,
If the external device connected via the second communication means is not the communication partner of the first communication means disconnected by the switching process, the control means requests the external device to start the service A communication device that is controlled so as not to occur.   The communication apparatus according to claim 1, wherein the first communication unit is connected to the external apparatus via a wireless LAN.   The communication apparatus according to claim 1, wherein the second communication unit is connected to the external apparatus via Bluetooth.   The second communication unit starts a connection by the second communication with the external device by executing a scan process for scanning an advertisement signal transmitted from the external device. Item 4. The communication device according to Item 3.   The communication apparatus according to claim 4, wherein the second communication unit executes a scan process even after connection with the second apparatus is established by the second communication.   Even if the external device connected via the second communication means is not the communication partner of the first communication means disconnected by the switching process, the second communication means is connected to the external device. 6. The control unit according to claim 3, wherein the control unit performs control so as not to request the start of the service to the external apparatus while maintaining the connection by the second communication. Communication device.   7. The communication device according to claim 1, wherein control is performed so that an external device search by the first communication unit is not executed during the scan processing by the second communication unit. 8.   The control unit is connected via the second communication unit based on the identification information acquired from the external device through the first communication and the identification information acquired from the external device through the second communication. The communication apparatus according to claim 1, wherein the external apparatus determines whether or not the external apparatus is a communication partner of the first communication unit disconnected by the switching process. A control method for a communication device, comprising: a first communication unit that connects to an external device through first communication; and a second communication unit that connects to the external device through second communication,
When an operation requesting execution of a service using the second communication unit is received from a user while the first communication unit is connected to the external device, the connection to the external device by the first communication unit A control step for controlling a switching process for disconnecting the external device and connecting to the external device via the second communication means;
Requesting the external device to start the service when the external device connected via the second communication means is a communication partner of the first communication means disconnected by the switching process;
Controlling the external device not to request the start of the service to the external device when the external device connected via the second communication means is not a communication partner of the first communication means disconnected by the switching process. A method for controlling a communication apparatus.   A computer-readable program for causing a computer to function as each unit of the communication device according to any one of claims 1 to 8.

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