Communication device, control method, and program

Abstract

To provide a communication device, a control method thereof, and a program that reduce the possibility that the communication device will acquire only some of a plurality of moving image files from an imaging device.SOLUTION: A communication device communicates with an imaging device capable of executing a first recording operation of dividing a moving image into a plurality of moving image files and recording them. A shooting and automatic transfer processing method involving automatic switching of operation modes includes: control means that, when the operation mode of the communication device is an automatic transfer ON mode (first operation mode), executes acquisition control to acquire a new moving image file from the imaging device each time the new moving image file is generated in the imaging device, and does not execute acquisition control when the operation mode is an automatic transfer OFF mode (second operation mode); detection means that detects that the imaging device has started the first recording operation; and switching means that switches the operation mode to the first operation mode in response to detection of the start of the first recording operation while the operation mode is the second operation mode.SELECTED DRAWING: Figure 7A

Description

[Technical Field]

[0001] The present invention relates to a communication device, a control method, and a program. [Background technology]

[0002] A technology is known in which an imaging device such as a digital video camera is equipped with a wireless communication function, and moving images input from the imaging device are divided into predetermined time segments, recorded, and then transmitted to an external device as moving image files (Patent Document 1). This technology makes it possible to transmit moving images to an external device more efficiently. This type of divided recording of moving images is called chunk recording.

[0003] In recent years, mass media companies, such as news agencies and telecommunications companies, have been required to quickly deliver filmed content to their news agencies on set, which has led to the use of various file transfer solutions that utilize network communications.

[0004] As an example, a mobile application that runs on a mobile device such as a smartphone and that acquires image, video, and audio files captured and recorded by an imaging device is known. The mobile application then transmits the acquired files to an external File Transfer Protocol (FTP) server via a network.

[0005] Furthermore, such a mobile application has a function (hereinafter referred to as the "automatic shooting and transfer function") that automatically executes a series of processes, such as acquiring a video file from the imaging device and transferring it to an external FTP server, when it receives a recording completion notification of the video file from the imaging device using, for example, the PTP / IP protocol. By enabling the automatic shooting and transfer function, the user can automatically deliver the video to an external delivery destination without having to perform an operation to select the captured file. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2022-96304 Summary of the Invention [Problem to be solved by the invention]

[0007] Multiple video files generated by chunk recording (hereinafter referred to as "chunk video files") are generally combined at the delivery destination so that they can be treated as a single video. Therefore, at the time of delivery, it is necessary that the entire series of files from the first chunk video file to the last chunk video file are present. If the delivery is made with some chunk video files missing, problems will arise such as the files not being able to be combined properly at the delivery destination.

[0008] Consider a case where the automatic shooting and transfer function of a mobile application is enabled after an imaging device transmits one or more recording completion notifications corresponding to one or more chunk video files including the first chunk video file. In this case, the mobile application is unable to acquire one or more chunk video files corresponding to one or more recording completion notifications transmitted before the automatic shooting and transfer function was enabled. If the chunk video files acquired after the automatic shooting and transfer function was enabled are sent to the delivery destination, the previous chunk video files required for joining will be missing at the delivery destination.

[0009] The present invention has been made in consideration of such circumstances, and aims to provide a technology that reduces the possibility that a communication device will acquire only a portion of multiple video files from an imaging device when the imaging device divides and records a video into multiple video files. [Means for solving the problem]

[0010] In order to solve the above problem, the present invention provides a communication device configured to communicate with an imaging device capable of performing a first recording operation in which a video is divided into multiple video files and recorded, the communication device comprising: a control means that, when the operation mode of the communication device is a first operation mode, executes acquisition control to acquire a new video file from the imaging device each time the new video file is generated in the imaging device, and does not execute the acquisition control when the operation mode is a second operation mode; a detection means that detects when the imaging device has started the first recording operation; and a switching means that switches the operation mode to the first operation mode in response to detection of the start of the first recording operation while the operation mode is the second operation mode. [Effects of the Invention]

[0011] According to the present invention, when an imaging device divides a video into multiple video files and records them, it is possible to reduce the possibility that a communication device will acquire only a portion of the multiple video files from the imaging device.

[0012] Other features and advantages of the present invention will become more apparent from the accompanying drawings and the following detailed description of the preferred embodiment of the present invention. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a schematic diagram illustrating a configuration of a communication system. [Figure 2] 1A is a block diagram showing an example of the configuration of an image capturing apparatus 100. FIG. 1B is a diagram showing an example of the appearance of the image capturing apparatus 100. [Figure 3] FIG. 2 is a block diagram showing an example of the configuration of a communication device 200. [Figure 4A] 2A to 2C are diagrams illustrating two methods by which the imaging device 100 records a moving image file for transfer in MP4 file format onto the recording medium 110. [Figure 4B] 10A and 10B are diagrams for explaining the time required from the start of recording to the completion of transfer of a video file in proxy recording and chunk recording, respectively. [Figure 5] 2 is a diagram illustrating a user interface (a screen displayed on a display unit 206) of a transfer application executed by a communication device 200. FIG. [Figure 6A] FIG. 10 is a diagram showing a processing sequence for automatic shooting and transfer in the case of proxy recording. [Figure 6B] FIG. 10 is a diagram showing a processing sequence for automatic image capture and transfer in the case of chunk recording. [Figure 7A] 10 is a flowchart of an automatic image capture and transfer process involving automatic switching of operation modes. [Figure 7B] 7B is a flowchart showing a modification of FIG. 7A. [Figure 8] 7B is a diagram showing a processing sequence for automatic image capture and transfer when the communication device 200 performs the processing of FIG. 7A. [Figure 9] FIG. 10 is a diagram showing an example of a screen for allowing a user to select whether or not to switch the operation mode to an automatic transfer ON mode. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the scope of the invention claimed. Although multiple features are described in the embodiments, not all of these multiple features are necessarily essential to the invention, and multiple features may be combined arbitrarily. Furthermore, in the accompanying drawings, the same reference numerals are used to designate the same or similar components, and redundant explanations will be omitted.

[0015] [First embodiment] <Communication system configuration> FIG. 1 is a schematic diagram illustrating the configuration of a communication system. In FIG. 1, 100 is an imaging device such as a digital video camera. 200 is a communication device such as a mobile terminal. Communication device 200 is an information processing device with a communication function, such as a smartphone or a computer. 300 is a server. Server 300 is an image storage device installed at the connection destination via a communication network such as the Internet.

[0016] 1, the imaging device 100 and the communication device 200 are connected by wired communication using a cable or wireless communication using technology such as Wi-Fi. The imaging device 100 can transfer a generated video file to the communication device 200. The communication device 200 and the server 300 are connected using communication technology such as mobile data communication. The communication device 200 can transfer information stored in the communication device 200 to the server 300 in accordance with a communication protocol such as FTP.

[0017] The configuration of the communication system is not limited to the above configuration. For example, the imaging device 100, the communication device 200, and the server 300 may be connected to the same network via an access point without using mobile data communication.

[0018] <Configuration of imaging device 100> 2(a) is a block diagram showing an example of the configuration of the imaging device 100. Note that, although a digital video camera will be described here as an example of the imaging device 100, the imaging device 100 is not limited to a digital video camera. For example, the imaging device 100 may be a portable media player, a so-called tablet device, or an information processing device such as a personal computer.

[0019] The control unit 101 controls each unit of the imaging device 100 in accordance with input signals and a program described below. Note that instead of the control unit 101 controlling the entire imaging device 100, the entire imaging device 100 may be controlled by having multiple pieces of hardware share the processing.

[0020] The imaging unit 102 includes, for example, an optical lens unit including an aperture mechanism, a zoom lens, and a focus lens, and an imaging element for converting light introduced through the optical lens unit into an electrical image signal. The imaging element may be, for example, a complementary metal oxide semiconductor (CMOS) or a charge coupled device (CCD). The imaging unit 102 converts subject light formed by a lens included in the imaging unit 102 into an electrical signal using the imaging element under the control of the control unit 101. The imaging unit 102 performs noise reduction processing and the like on the electrical signal, and outputs digital data corresponding to the electrical signal as video data. The video data is recorded on the recording medium 110.

[0021] The nonvolatile memory 103 is an electrically erasable and recordable nonvolatile memory, and stores programs to be executed by the control unit 101 and the like.

[0022] The working memory 104 is used as a buffer memory for temporarily storing moving image data captured by the imaging unit 102, a memory for displaying moving images on the display unit 106, a working area for the control unit 101, and the like.

[0023] The operation unit 105 is used to receive instructions from the user for the imaging device 100. The operation unit 105 includes, for example, a power button used by the user to turn the imaging device 100 on / off, a release switch used to instruct the user to start / stop shooting, and a playback button used to instruct the user to play back video data. The operation unit 105 also includes operation members such as a connection button used to start communication with an external device via a communication unit 111 described below. The operation unit 105 also includes a touch panel formed on a display unit 106 described below.

[0024] The display unit 106 displays a viewfinder image during shooting, displays captured video data, displays text for interactive operation, etc. The display unit 106 does not necessarily have to be built into the imaging device 100. The imaging device 100 can be connected to an internal or external display unit 106, and it is sufficient that the imaging device 100 has at least a display control function for controlling the display on the display unit 106.

[0025] The audio input unit 107 is a device for inputting audio. The audio input unit 107 generates audio data based on the input audio. The audio data is recorded on the recording medium 110 in an audio file format.

[0026] The recording medium 110 can record video data output from the imaging unit 102 and audio data output from the audio input unit 107. The imaging device 100 has two slots for inserting the recording medium 110. The control unit 101 records a high-resolution video file (hereinafter referred to as the "main video file") on the recording medium 110 in the first slot. The resolution of the main video file is, for example, a recording resolution specified by the user (e.g., the highest resolution of the image sensor of the imaging unit 102). The control unit 101 can also generate a low-resolution or low-bitrate video file (hereinafter referred to as the "proxy video file") to be transmitted from the communication unit 111 to the communication device 200 via a network, or a chunk video file for chunk recording. The control unit 101 can record the generated proxy video file or chunk video file on the recording medium 110 in the second slot.

[0027] The number of slots provided in the imaging device 100 may be one, or may be three or more. The recording medium 110 may be built into the imaging device 100. In this case, too, the number of recording media 110 is not particularly limited. That is, the imaging device 100 only needs to have a function for accessing at least one recording medium 110.

[0028] The communication unit 111 is an interface for communicating with an external device. The imaging device 100 can exchange data with the external device via the communication unit 111. For example, the imaging device 100 can transmit video data generated by the imaging unit 102 and audio data generated by the audio input unit 107 to the external device via the communication unit 111. In this embodiment, the communication unit 111 includes an interface for communication via a so-called wireless LAN in accordance with the IEEE802.11 standard.

[0029] The communication unit 111 also includes a Universal Serial Bus (USB) interface for communicating with an external device via a USB cable. The control unit 101 controls the communication unit 111 to realize wireless communication and wired communication with the external device.

[0030] The communication unit 111 has an access point mode (hereinafter referred to as “AP mode”) in which it operates as an access point in infrastructure mode. The communication unit 111 also has a client mode (hereinafter referred to as “CL mode”) in which it operates as a client in infrastructure mode. Operating the communication unit 111 in CL mode allows the imaging device 100 to operate as a CL device in infrastructure mode. When the imaging device 100 operates as a CL device, it can connect to a nearby AP device and participate in a network formed by the AP device. Operating the communication unit 111 in AP mode also allows the imaging device 100 to operate as a simplified AP (hereinafter referred to as a “simple AP”), which is a type of AP but has more limited functionality. When the imaging device 100 operates as a simple AP, it forms a network by itself. Peripheral devices of the imaging device 100 recognize the imaging device 100 as an AP device and can participate in the network formed by the imaging device 100. It is assumed that a program for operating the imaging device 100 as described above is stored in the non-volatile memory 103.

[0031] Although a simple AP is a type of AP, it does not have a gateway function for transferring data received from a CL device to an Internet provider, etc. Therefore, even if the imaging device 100 operating as a simple AP receives data from other devices participating in the network formed by the imaging device 100 itself, it cannot transfer the data to a network such as the Internet.

[0032] Next, the external appearance of the imaging device 100 will be described with reference to Fig. 2(b). Fig. 2(b) is a diagram showing an example of the external appearance of the imaging device 100. The release switch 105a, zoom lever 105b, playback button 105c, and touch panel 105d are operation members included in the operation unit 105. In addition, a moving image obtained as a result of imaging by the imaging unit 102 is displayed on the display unit 106.

[0033] <Configuration of communication device 200> 3 is a block diagram showing an example of the configuration of communication device 200. Note that, although a portable mobile terminal is described here as an example of communication device 200, communication device 200 is not limited to a portable mobile terminal. For example, communication device 200 may be a digital video camera with a wireless function, a tablet device, a personal computer, or the like.

[0034] The control unit 201 controls each unit of the communication device 200 in accordance with input signals and a program described below. Note that instead of the control unit 201 controlling the entire communication device 200, the entire communication device 200 may be controlled by multiple pieces of hardware sharing the processing.

[0035] The imaging unit 202 converts the subject light imaged by the lens included in the imaging unit 202 into an electrical signal, performs noise reduction processing on the electrical signal, and outputs digital data corresponding to the electrical signal as video data. The captured video data is stored in a buffer memory. The control unit 201 then performs a predetermined calculation on the video data and records it on the recording medium 210.

[0036] The nonvolatile memory 203 is an electrically erasable and recordable nonvolatile memory. The nonvolatile memory 203 stores programs and the like executed by the control unit 201. The programs stored in the nonvolatile memory 203 include an operating system (OS), which is basic software executed by the control unit 201, and applications that work with the OS to realize applied functions.

[0037] In this embodiment, the nonvolatile memory 203 also stores a transfer application (hereinafter referred to as a "transfer app") that enables the communication device 200 to communicate with the imaging device 100 and the server 300. The nonvolatile memory 203 also stores a file management application (hereinafter referred to as a "file management app") and an image management application (hereinafter referred to as an "image management app") that manage video files and audio files output from the imaging device 100.

[0038] The working memory 204 is used as an image display memory for the display unit 206, a working area for the control unit 201, a buffer memory, etc. In this embodiment, when the communication device 200 transfers a moving image file received from the imaging device 100 to the server 300, the moving image file is temporarily stored in the working memory 204.

[0039] The operation unit 205 is used to receive instructions from a user for the communication device 200. The operation unit 205 includes, for example, an operation member such as a power button for the user to instruct the power of the communication device 200 to be turned on / off, and a touch panel formed on the display unit 206.

[0040] The display unit 206 displays video data and text for interactive operations. Note that the display unit 206 does not necessarily have to be included in the communication device 200. The communication device 200 only needs to be able to connect to the display unit 206 and have at least a display control function for controlling the display of the display unit 206.

[0041] The recording medium 210 can record video data output from the imaging unit 202. The recording medium 210 may be configured to be detachable from the communication device 200, or may be built into the communication device 200. In other words, the communication device 200 only needs to have at least the function of accessing the recording medium 210.

[0042] The communication unit 211 is an interface for communicating with an external device. The communication device 200 can exchange data with the imaging device 100 and the server 300 via the communication unit 211. The communication unit 211 includes an antenna. The control unit 201 can be connected to the imaging device 100 via the antenna. The communication device 200 may be connected to the imaging device 100 and the server 300 directly or via an access point. As a protocol for communicating data, for example, Picture Transfer Protocol over Internet Protocol (PTP / IP) via a wireless LAN can be used.

[0043] The communication unit 211 also includes a Universal Serial Bus (USB) interface for communicating with an external device via a USB cable.

[0044] The method of communication with an external device is not limited to the above-mentioned method. For example, the communication unit 211 may include a wireless communication module such as an infrared communication module, a Bluetooth (registered trademark) communication module, or a Wireless USB.

[0045] The public network connection unit 213 is an interface used when performing public wireless communication. The communication device 200 can communicate with other devices via the public network connection unit 213. In this case, the control unit 201 inputs and outputs audio signals via the microphone 214 and the speaker 215, thereby realizing the communication.

[0046] The communication device 200 can also exchange data with the server 300 via the public network connection unit 213. The public network connection unit 213 includes an antenna. The control unit 201 can connect to the public network via the antenna. Note that the communication unit 211 and the public network connection unit 213 can also share a single antenna. Furthermore, generally, communication via the communication unit 211 has a faster communication speed than communication via the public network. Therefore, the communication device 200 of this embodiment prioritizes communication via the communication unit 211 when no call is being made.

[0047] <Proxy Recording and Chunk Recording> Next, two methods will be described using Figure 4A for the imaging device 100 to record a transfer moving image file in MP4 file format on the recording medium 110. The transfer moving image file has at least one of a lower resolution and a lower bit rate than the main moving image file. When the user presses the release switch 105a of the imaging device 100, recording of the moving image begins, and when the user presses the release switch 105a again, recording of the moving image ends.

[0048] The first method is to record a proxy video file with the same recording time as the main video file as a transfer video file (hereinafter referred to as "proxy recording"). In Fig. 4A, 401 indicates a proxy video file whose recording time is the time from the start to the end of recording. In this way, proxy recording generates one proxy video file corresponding to the time from the start to the end of recording.

[0049] In this embodiment, for example, the file name of the proxy video file 401 starts with "MVI," the fourth character following this is "P," and then includes a file number and an extension. For example, the file name is written as "MVIP0001.MP4."

[0050] The second method is to record, as a transfer video file, small proxy video files that are divided every time a predetermined time has elapsed during video recording (hereinafter referred to as "chunk recording"). In this embodiment, each of the divided small proxy video files generated by chunk recording is used as a chunk video file. For example, a new chunk video file is generated 30 seconds after the start of recording or the generation of the previous chunk video file. In FIG. 4A, the control unit 201 generates a chunk video file 402a 30 seconds after the start of recording. Then, 30 seconds after the generation of the chunk video file 402a, the control unit 201 generates a chunk video file 402b. If the user presses the release switch 105a before 30 seconds have elapsed since the generation of the chunk video file 402b, the control unit 201 ends the video recording and generates a chunk video file 402c that corresponds to the time from the generation of the chunk video file 402b to the end of recording.

[0051] In this embodiment, for example, the file names of the chunk movie files are determined as follows: The file name of the chunk movie file 402a generated first starts with "MVI" and the fourth character following this is "B". The fourth character "B" indicates that the chunk movie file 402a is the first chunk movie file (at the start of recording). The file name includes a file number and an extension following "B". Therefore, the file name is "MVIB0001.MP4". The file name of the chunk movie file 402b generated next starts with "MVI" and the fourth character following this is "D". The fourth character "D" indicates that the chunk movie file 402b is an intermediate chunk movie file. The file name includes a file number and an extension following "D". Therefore, the file name is "MVID0002.MP4". The file name of the chunk movie file 402c generated last starts with "MVI" and the fourth character following this is "E". The fourth character, "E," indicates that the chunk video file 402c is the last chunk video file (when recording is complete). The file name includes the file number and extension following "E." Therefore, the file name will be "MVIE0003.MP4."

[0052] In this way, this embodiment uses a naming convention that changes the fourth character of the file name. Therefore, by checking the fourth character of the moving image file, the communication device 200 can determine whether the current moving image recording is proxy recording or chunk recording. In addition, in the case of chunk recording, the communication device 200 can determine whether each chunk moving image file is the first file, the middle file, or the last file.

[0053] Next, the time required from the start of recording a video file to the completion of transfer in both proxy recording and chunk recording will be described with reference to FIG. 4B.

[0054] In the case of proxy recording, the proxy video file is not completed while video recording is in progress. Therefore, the imaging device 100 cannot transmit the proxy video file while video recording is in progress. After recording of the proxy video file is completed, the imaging device 100 starts the process of transmitting (transferring) the proxy video file to the communication device 200. After receiving the proxy video file, the communication device 200 starts the process of transmitting the received proxy video file to the server 300. Therefore, the time 403 from the start of proxy recording to the completion of transfer of the proxy video file 401 includes the recording time of the proxy video file 401 as well as the transmission time of the proxy video file 401.

[0055] In the case of chunk recording, the imaging device 100 can sequentially transmit generated chunk moving image files even during moving image recording. For example, once chunk moving image file 402a is generated, the imaging device 100 can start the process of transferring chunk moving image file 402a even during moving image recording. Therefore, in the case of chunk recording, the imaging device 100 can start transfer earlier by differential time 404 than in the case of proxy recording. As a result, time 405 from the start of chunk recording to the completion of transfer of the last chunk moving image file 402c is shortened by differential time 406 compared to time 403 in the case of proxy recording.

[0056] As described above, the imaging device 100 can selectively perform chunk recording (a first recording operation in which a video is divided into multiple video files and recorded) or proxy recording (a second recording operation in which a video is recorded in a single video file) as a video recording operation.

[0057] <User interface of the transfer app> The user interface (screen displayed on display unit 206) of the transfer application executed by communication device 200 will be described with reference to FIG.

[0058] 5(a) shows a function selection screen 501. The function selection screen 501 is displayed after the transfer application is launched and the communication device 200 is connected to the imaging device 100. The function selection screen 501 includes a camera content list display button 502 and an automatic capture and transfer button 503. When the user presses the camera content list display button 502, the transfer application screen transitions to a camera content list screen (not shown) that displays a list of files recorded in the imaging device 100. When the user presses the automatic capture and transfer button 503, the transfer application screen transitions to an automatic capture and transfer screen 504 shown in FIG. 5(b).

[0059] The automatic capture and transfer screen 504 is a screen for displaying a file generated by the imaging device 100 and transferred to the server 300 via the communication device 200. When the transfer application screen transitions to the automatic capture and transfer screen 504, the communication device 200 performs a switching process to switch the operation mode of the communication device 200 from automatic transfer OFF mode (second operation mode) to automatic transfer ON mode (first operation mode). In the automatic transfer ON mode, the communication device 200 accepts a video file generation notification (hereinafter, may be simply referred to as a "generation notification") from the imaging device 100. When the imaging device 100 transmits the generation notification to the communication device 200, if the operation mode of the communication device 200 is the automatic transfer ON mode, the communication device 200 accepts the generation notification and performs automatic transfer processing (various processes required for transferring the video file). When the communication device 200 is in the automatic transfer OFF mode (when the transfer application screen has not transitioned to the automatic capture and transfer screen 504), the communication device 200 discards the generation notification even if it has been received. In this case, automatic transfer processing is not performed.

[0060] In the following description, it is assumed that the imaging device 100 transmits a generation notification to the communication device 200 each time a new video file is generated, regardless of whether the operation mode of the communication device 200 is the automatic transfer ON mode. However, a configuration may be adopted in which the imaging device 100 does not transmit a generation notification while the operation mode of the communication device 200 is the automatic transfer OFF mode. In this case, the communication device 200 transmits a generation notification start request to the imaging device 100 in response to switching the operation mode to the automatic transfer ON mode. In response to receiving the generation notification start request, the imaging device 100 detects that the operation mode of the communication device 200 has been switched to the automatic transfer ON mode and enables transmission of the generation notification. Furthermore, in response to switching the operation mode to the automatic transfer OFF mode, the communication device 200 transmits a generation notification stop request to the imaging device 100. In response to receiving the generation notification stop request, the imaging device 100 detects that the operation mode of the communication device 200 has been switched to the automatic transfer OFF mode and disables transmission of the generation notification.

[0061] The automatic photo-taking and transfer screen 504 includes a back button 505 for returning to the previous screen. Before the file transfer starts, the automatic photo-taking and transfer screen 504 also includes a display area 506 in which a message prompting the user to take a photo ("Please take a photo") is displayed.

[0062] When the user presses back button 505, the screen of the transfer application transitions to function selection screen 501. When the screen of the transfer application transitions to function selection screen 501, communication device 200 performs a switching process to switch the operation mode of communication device 200 from automatic transfer ON mode (first operation mode) to automatic transfer OFF mode (second operation mode). Therefore, communication device 200 can switch the operation mode between automatic transfer ON mode and automatic transfer OFF mode in accordance with a user instruction using capture automatic transfer button 503 or back button 505.

[0063] When the file transfer starts, the capture and automatic transfer screen 504 includes display areas 507 and 508 instead of the display area 506, as shown in FIGS. 5(c) and 5(d).

[0064] FIG. 5(c) shows an example of the display of the automatic shooting and transfer screen 504 when transferring a proxy video file. A display area 507 displays information about the video file being transferred (here, a thumbnail image and a file name). The information about the video file is included, for example, in a generation notification received from the image capture device 100. The display area 507 also displays a character string and a progress bar indicating the progress of the transfer. The character string indicating the progress of the transfer is displayed as a different character string ("Acquiring" or "Transmitting") depending on whether the communication device 200 is acquiring the video file from the image capture device 100 or the communication device 200 is transmitting the video file to the server 300. The progress bar also includes an area whose length changes depending on the acquired data size of the video file from the image capture device 100 or the transmitted data size of the video file to the server 300.

[0065] Display area 508 displays a list of information about video files (including video files being acquired or transmitted) that have been transferred after the transfer application screen has transitioned to automatic shooting transfer screen 504. The information about each video file includes a thumbnail image, a file name, and a status icon indicating the transfer progress.

[0066] As the status icon, an icon 509 indicating that the transfer is complete or an icon 510 indicating that the transfer is currently being processed is displayed.

[0067] Fig. 5(d) shows an example of the display of the automatic shooting and transfer screen 504 when transferring a chunk video file. The automatic shooting and transfer screen 504 in Fig. 5(d) has the same configuration as the automatic shooting and transfer screen 504 in Fig. 5(c), except that the video file is a chunk video file.

[0068] <Processing sequence for automatic recording transfer (in the case of proxy recording)> The processing sequence for automatic shooting and transfer in the case of proxy recording will be described with reference to Fig. 6A. Before the processing sequence starts, the screen of the transfer application of the communication device 200 is assumed to have transitioned to automatic shooting and transfer screen 504. Therefore, the operation mode of the communication device 200 is automatic transfer ON mode. Also, the recording mode of the imaging device 100 is assumed to be set to a mode in which proxy recording is performed.

[0069] At T601, the control unit 101 of the imaging device 100 receives a recording start operation from the user via the operation unit 105. When the recording start operation is received, the control unit 101 starts proxy recording (a second recording operation for recording moving images into one moving image file).

[0070] In T602, the control unit 101 receives a recording stop operation from the user via the operation unit 105. When the recording stop operation is received, the control unit 101 ends the proxy recording.

[0071] In T603, the control unit 101 generates a proxy video file.

[0072] In T604, the control unit 101 transmits a generation notification indicating that a proxy video file has been generated to the communication device 200. The control unit 201 of the communication device 200 receives the generation notification from the imaging device 100.

[0073] At T605a, the control unit 201 of the communication device 200 transmits a video file acquisition request to the imaging device 100. The control unit 101 of the imaging device 100 receives the video file acquisition request from the communication device 200.

[0074] At T605b, the control unit 101 of the imaging device 100 transmits the proxy moving image file to the communication device 200 in response to the moving image file acquisition request. The control unit 201 of the communication device 200 acquires (receives) the proxy moving image file from the imaging device 100.

[0075] In T606, the control unit 201 of the communication device 200 transmits the proxy video file acquired from the imaging device 100 to the server 300. The server 300 receives the proxy video file from the communication device 200.

[0076] Through the above series of processes, the proxy video file recorded by the image capture device 100 can be transferred to the server 300 via the communication device 200.

[0077] <Processing sequence for automatic shooting transfer (in the case of chunk recording)> 6B, the processing sequence for automatic image capture and transfer in the case of chunk recording will be described. Before the processing sequence starts, the transfer application screen of the communication device 200 is assumed to have transitioned to automatic image capture and transfer screen 504. Therefore, the operation mode of the communication device 200 is automatic transfer ON mode. Also, the recording mode of the imaging device 100 is assumed to be set to a mode for performing chunk recording.

[0078] At T607, the control unit 101 of the imaging device 100 receives a recording start operation from the user via the operation unit 105. When the recording start operation is received, the control unit 101 starts chunk recording (a first recording operation in which a moving image is divided into multiple moving image files and recorded).

[0079] At T608, the control unit 101 starts a periodic timer. The periodic timer is used to periodically detect the passage of a predetermined time. The predetermined time here is, for example, a time specified in advance by the user, and corresponds to the recording time of one chunk video file.

[0080] At T609, one period of the periodic timer expires.

[0081] At T610, the control unit 101 generates a chunked video file. This chunked video file is the first chunked video file, and therefore has the file name "MVIB0001.MP4."

[0082] At T611, the control unit 101 transmits a generation notification indicating that a chunked video file has been generated to the communication device 200. The control unit 201 of the communication device 200 receives the generation notification from the imaging device 100.

[0083] At T612a, the control unit 201 of the communication device 200 transmits a video file acquisition request to the imaging device 100. The control unit 101 of the imaging device 100 receives the video file acquisition request from the communication device 200.

[0084] At T612b, the control unit 101 of the imaging device 100 transmits the chunked moving image file to the communication device 200 in response to the moving image file acquisition request. The control unit 201 of the communication device 200 acquires (receives) the chunked moving image file from the imaging device 100.

[0085] At T613, the control unit 201 of the communication device 200 transmits the chunked moving image file acquired from the imaging device 100 to the server 300. The server 300 receives the chunked moving image file from the communication device 200.

[0086] At T614, one period of the periodic timer expires.

[0087] At T615, the control unit 101 of the imaging device 100 generates a chunk moving image file. This chunk moving image file is an intermediate chunk moving image file, and therefore has the file name "MVID0002.MP4".

[0088] The processing of T616, T617a, T617b, and T618 is similar to the processing of T611, T612a, T612b, and T613.

[0089] At T619, the control unit 101 of the imaging device 100 receives a recording stop operation from the user via the operation unit 105. When the recording stop operation is received, the control unit 101 ends the proxy recording.

[0090] At T620, the control unit 101 stops the period timer.

[0091] At T621, the control unit 101 generates a chunked video file. This chunked video file is the last chunked video file, and therefore has the file name "MVIE0003.MP4".

[0092] The processing of T622, T623a, T623b, and T624 is similar to the processing of T611, T612a, T612b, and T613.

[0093] By the above series of processes, a series of chunked video files recorded by the imaging device 100 can be transferred to the server 300 via the communication device 200.

[0094] <Automatic image transfer process with automatic switching of operation modes> In the description of FIG. 6B above, it was assumed that before the start of the processing sequence, the screen of the transfer application of the communication device 200 transitioned to the capture and automatic transfer screen 504, and the operation mode of the communication device 200 was switched to the automatic transfer ON mode. However, there is a possibility that the user performs a recording start operation on the imaging device 100 without performing an operation on the communication device 200 to transition to the capture and automatic transfer screen 504. In this case, the operation mode of the communication device 200 is the automatic transfer OFF mode. Therefore, even if the control unit 201 receives a generation notification at T611, the control unit 201 discards the generation notification without accepting it, and does not transmit a video file acquisition request at T612a. Therefore, the communication device 200 is unable to acquire the first chunk video file.

[0095] Thereafter, before T616, it is assumed that the user performs an operation on the communication device 200 to transition to the capture automatic transfer screen 504, and the operation mode of the communication device 200 changes to automatic transfer ON mode. In this case, in response to receiving the generation notification at T616, the control unit 201 transmits a video file acquisition request at T617a. Therefore, the communication device 200 can acquire the middle chunk video file. Similarly, the communication device 200 can acquire the last chunk video file. As a result, even though the communication device 200 cannot transmit some of the chunk video files that should be combined to the server 300, it transmits the remaining chunk video files to the server 300.

[0096] A configuration for preventing such a situation from occurring will be described below. In the following description, it is assumed that, upon receiving a video recording start operation, imaging device 100 transmits to communication device 200 a notification indicating that video recording has started (video recording start notification).

[0097] 7A is a flowchart of the automatic image capture and transfer process involving automatic switching of the operation mode, which is executed by the communication device 200. Unless otherwise specified, the processing of each step in this flowchart is realized by the control unit 201 executing a program stored in the nonvolatile memory 203. When the communication device 200 is connected to the imaging device 100 while the function selection screen 501 is displayed on the display unit 206 (i.e., while the operation mode is the automatic transfer OFF mode), the processing of this flowchart starts.

[0098] In S701, the control unit 201 determines whether or not a moving image recording start notification has been received from the imaging device 100. The control unit 201 repeats the determination in S701 until the moving image recording start notification is received. When the moving image recording start notification is received, the control unit 201 advances the process to S702.

[0099] In S702, the control unit 201 acquires the recording status of the imaging device 100 by transmitting a recording status acquisition request to the imaging device 100. The recording status here includes information (second information) indicating whether the video recording operation by the imaging device 100 is chunk recording (first recording operation) or proxy recording (second recording operation).

[0100] In S703, the control unit 201 determines whether the imaging device 100 has started chunk recording based on the acquired recording status information (second information). If the imaging device 100 is currently recording chunks, the control unit 201 proceeds to S704. If the imaging device 100 is not currently recording chunks, the processing of this flowchart ends. In this case, even if a generation notification is received, the control unit 201 discards the generation notification and does not acquire a video file.

[0101] In S704, the control unit 201 displays the capture automatic transfer screen 504 and switches the operation mode to the automatic transfer ON mode.

[0102] In S705, the control unit 201 determines whether or not a moving image file generation notification has been received from the imaging device 100. If a moving image file generation notification has been received, the control unit 201 proceeds to S706; otherwise, the control unit 201 proceeds to S708.

[0103] In S706, the control unit 201 transmits a moving image file acquisition request to the imaging device 100 to acquire the chunked moving image file corresponding to the generation notification.

[0104] In S707, the control unit 201 transmits the chunked video file acquired from the imaging device 100 to the server 300.

[0105] In S708, the control unit 201 determines whether the user has pressed the back button 505 arranged on the automatic image capture and transfer screen 504. If the back button 505 has not been pressed, the control unit 201 returns the process to S705. If the back button 505 has been pressed, the control unit 201 advances the process to S709.

[0106] In S709, the control unit 201 switches the operation mode to the automatic transfer OFF mode, and displays the function selection screen 501 on the display unit 206.

[0107] 7A, the control unit 201 switches the operation mode to automatic transfer ON mode in response to detecting the start of chunk recording in the imaging device 100 while the function selection screen 501 is displayed (i.e., while the operation mode is automatic transfer OFF mode). This reduces the possibility of acquiring intermediate chunk moving image files without acquiring the first chunk moving image file. Therefore, it is possible to prevent the remaining chunk moving image files from being transferred to the server 300 even though some of the chunk moving image files to be combined have not been transferred to the server 300.

[0108] In the above description, the control unit 201 determines whether to switch the operation mode to automatic transfer ON mode based on information about the recording status. However, the control unit 201 may determine whether to switch the operation mode to automatic transfer ON mode by additionally considering whether information necessary for transfer (for example, the server name (identification information) and folder name of the transfer destination server 300) has been set. Even in the case of chunk recording, if the information necessary for transfer has not been set, the control unit 201 may not display the capture automatic transfer screen 504 and may maintain the operation mode in automatic transfer OFF mode.

[0109] The communication device 200 is configured to display a menu screen for setting information necessary for transfer, such as identification information of the server 300. The control unit 201 sets information necessary for transfer, such as identification information of the server 300, in accordance with a user's operation on this menu screen. In this case, in S707, the control unit 201 transmits the chunked video file to the server identified by the set identification information.

[0110] Furthermore, in order to prevent the automatic capture transfer from being started unintentionally by the user, the control unit 201 may display a screen that prompts the user to select whether or not to switch the operation mode to the automatic transfer ON mode.

[0111] FIG. 9A is a diagram showing an example of a screen for prompting the user to select whether or not to switch the operation mode to automatic transfer ON mode. If the determination in S703 is "YES," the control unit 201 displays a screen 901 as shown in FIG. 9A. The screen 901 includes a message confirming whether or not to start automatic image capture transfer. If the user presses a "Yes" button 902, the control unit 201 proceeds to the process in S704 and switches the operation mode to automatic transfer ON mode. If the user presses a "No" button 903, the control unit 201 maintains the operation mode in automatic transfer OFF mode and ends the process of FIG. 7A.

[0112] FIG. 9B shows another example of a screen for prompting the user to select whether to switch the operation mode to automatic transfer ON mode. If the determination in S703 is "YES," the control unit 201 displays the screen 904 shown in FIG. 9B. The screen 904 includes a message for selecting a destination server, allowing the user to select the desired server. Therefore, the example of FIG. 9B can also prevent transfer to an unintended server. When the user selects the desired server and presses the transfer button 905, the control unit 201 proceeds to S704 and switches the operation mode to automatic transfer ON mode. When the user presses the cancel button 906, the control unit 201 maintains the operation mode in automatic transfer OFF mode and ends the processing of FIG. 7A.

[0113] Also, an option for selecting ON / OFF of automatic start of automatic capture transfer may be provided in the setting menu of the communication device 200. If automatic start is set to ON and the determination in S703 is "YES," the control unit 201 proceeds to the process in S704 and switches the operation mode to automatic transfer ON mode. If automatic start is set to OFF, the control unit 201 does not perform the process in Fig. 7A. Therefore, even if chunk recording starts, the operation mode remains in automatic transfer OFF mode.

[0114] <Processing sequence corresponding to Figure 7A> FIG. 8 is a diagram showing a processing sequence for automatic image capture and transfer when communication device 200 performs the processing of FIG. 7A.

[0115] In T801, the control unit 101 of the imaging device 100 receives, via the operation unit 105, a recording start operation from the user.

[0116] In T802, the control unit 101 transmits a moving image recording start notification to the communication device 200. The control unit 201 of the communication device 200 receives the moving image recording start notification.

[0117] At T803a, the control unit 201 transmits a recording status acquisition request to the imaging device 100. The control unit 101 receives the recording status acquisition request.

[0118] In T803b, the control unit 101 transmits recording status information including information (second information) indicating whether the video recording operation is chunk recording (first recording operation) or proxy recording (second recording operation) to the communication device 200. The processing of the control unit 201 in T803a and T803b corresponds to S702 in Fig. 7A.

[0119] If the recording operation is chunk recording, the control unit 201 displays the capture automatic transfer screen 504 in T804.

[0120] In T805, the control unit 201 switches the operation mode to the automatic transfer ON mode. The processing of the control unit 201 in T804 and T805 corresponds to S704 in Fig. 7A. In parallel with this processing, the imaging device 100 performs processing similar to T608 in Fig. 6B.

[0121] Thereafter, the same processes as those from T609 to T624 in Fig. 6B are performed. The process by the control unit 201 here corresponds to S705 to S708 in Fig. 7A.

[0122] If the recording operation is proxy recording, the control unit 101 of the imaging device 100 performs the same processes as T602 to T604 in Fig. 6A. However, the control unit 201 of the communication device 200 discards the received generation notification, and therefore the video file is not acquired.

[0123] <Modification of Figure 7A> 7A, the control unit 201 determines whether to switch the operation mode to the automatic transfer ON mode based on the recording state information acquired from the imaging device 100. However, the method of determining whether to switch the operation mode to the automatic transfer ON mode is not limited to the method described in FIG. 7A.

[0124] Fig. 7B is a flowchart showing a modification of Fig. 7A In this modification, image capture device 100 does not need to transmit a moving image recording start notification.

[0125] In S711, the control unit 201 determines whether or not a moving image file generation notification has been received from the imaging device 100. The control unit 201 repeats the determination in S711 until a generation notification is received. When a generation notification is received, the control unit 201 advances the process to S712.

[0126] In S712, the control unit 201 determines whether the imaging device 100 has started chunk recording based on the generation notification. As described above, the generation notification includes the file name of the moving image file, and if the moving image file is the first chunk moving image file, the fourth character of the file name is “B.” That is, the generation notification transmitted first after the start of chunk recording (first recording operation) includes information (first information) indicating that the imaging device 100 has started chunk recording, and this information is included, for example, in the file name included in the generation notification. The control unit 201 can detect that chunk recording has started in response to receiving a generation notification including a file name with “B” as the fourth character. If chunk recording has started, the control unit 201 proceeds to S713; if not (if the fourth character of the file name is “P”), the control unit 201 ends the processing of this flowchart.

[0127] The process of S713 is the same as S704 in Fig. 7A. However, in Fig. 7B, since the first generation notification has already been received, the control unit 201 advances the process from S713 to S706. The subsequent processes are the same as in Fig. 7A.

[0128] <Summary of the First Embodiment> As described above, according to this embodiment, the communication device 200 is configured to communicate with the image capture device 100, which is capable of executing chunk recording (first recording operation) in which a moving image is divided into multiple moving image files and recorded. When the operation mode of the communication device 200 is the automatic transfer ON mode (first operation mode), the communication device 200 executes acquisition control to acquire a new moving image file each time the image capture device 100 generates the new moving image file (e.g., T611 to T623b in FIG. 6B and S705 to S708 in FIGS. 7A and 7B). When the operation mode is the automatic transfer OFF mode (second operation mode), the communication device 200 does not execute acquisition control. Furthermore, the communication device 200 detects that the image capture device 100 has started chunk recording (first recording operation) (e.g., S703 in FIG. 7A and S712 in FIG. 7B). The communication device 200 switches the operation mode to the automatic transfer ON mode (first operation mode) in response to detecting the start of chunk recording (first recording operation) while the operation mode is the automatic transfer OFF mode (second operation mode) (e.g., S703 to S704 in Figure 7A and S712 to S713 in Figure 7B).

[0129] Therefore, according to this embodiment, when an imaging device divides a video into multiple video files and records them, it is possible to reduce the possibility that a communication device will acquire only a portion of the multiple video files from the imaging device.

[0130] [Other embodiments] The present invention can also be realized by supplying a program that realizes one or more functions of the above-described embodiments to a system or device via a network or a storage medium, and having one or more processors in the computer of the system or device read and execute the program.The present invention can also be realized by a circuit (e.g., ASIC) that realizes one or more functions.

[0131] [summary] The above-described embodiment discloses at least the inventions shown in the following items, but is not limited to these inventions. [Item 1] 1. A communication device configured to communicate with an imaging device capable of performing a first recording operation of dividing a moving image into a plurality of moving image files and recording the divided moving image files, a control means that, when the operation mode of the communication device is a first operation mode, executes acquisition control to acquire a new moving image file from the imaging device every time the new moving image file is generated in the imaging device, and does not execute the acquisition control when the operation mode is a second operation mode; a detection means for detecting that the imaging device has started the first recording operation; a switching means for switching the operation mode to the first operation mode in response to detection of start of the first recording operation while the operation mode is the second operation mode; A communication device comprising: [Item 2] the imaging device is configured to transmit, each time a new moving image file is generated, a generation notification indicating that the new moving image file has been generated to the communication device; In the acquisition control, the control means acquires a new video file corresponding to the generation notification from the imaging device every time the generation notification is received from the imaging device. 2. The communication device according to item 1, [Item 3] the generation notification that is first transmitted by the imaging device after the start of the first recording operation includes first information indicating that the imaging device has started the first recording operation; the detection means detects that the imaging device has started the first recording operation in response to receiving the generation notification including the first information from the imaging device. 3. The communication device according to item 2. [Item 4] the generation notification includes a file name of a new video file corresponding to the generation notification; the first information is included in a file name included in the generation notification that is first transmitted after the start of the first recording operation; 4. The communication device according to item 3, [Item 5] the switching means switches the operation mode between the first operation mode and the second operation mode in accordance with a user instruction; 5. The communication device according to any one of items 1 to 4. [Item 6] the imaging device is capable of selectively executing, as a recording operation of the moving image, the first recording operation or a second recording operation of recording the moving image into one moving image file; the control means executes the acquisition control when the operation mode is the first operation mode, regardless of whether the recording operation is the first recording operation or the second recording operation, and does not execute the acquisition control when the operation mode is the second operation mode. 6. The communication device according to any one of items 1 to 5, [Item 7] the detection means detects that the imaging device has started the second recording operation, when the start of the second recording operation is detected while the operation mode is the second operation mode, the switching means does not switch the operation mode to the first operation mode. 7. The communication device according to item 6, [Item 8] the imaging device is capable of selectively executing, as a recording operation of the moving image, the first recording operation or a second recording operation of recording the moving image into one moving image file; The detection means detecting that the imaging device has started the recording operation; acquiring second information indicating whether the recording operation is the first recording operation or the second recording operation from the imaging device in response to detection of the start of the recording operation; detecting, based on the second information, that the imaging device has started the first recording operation or that the imaging device has started the second recording operation; 3. The communication device according to item 1 or 2. [Item 9] a display means for displaying a screen for prompting a user to select whether or not to switch the operation mode to the first operation mode in response to detection of the start of the first recording operation while the operation mode is the second operation mode; 9. The communication device according to any one of items 1 to 8, further comprising: [Item 10] A transmitting means for transmitting the moving image file acquired by the acquisition control to a server. 10. The communication device according to any one of items 1 to 9, further comprising: [Item 11] a setting means for setting identification information of the server; a transmitting means for transmitting the video file acquired by the acquisition control to a server identified by the identification information; Further provided with even if the start of the first recording operation is detected while the operation mode is the second operation mode, if the identification information is not set, the switching means does not switch the operation mode to the first operation mode. 10. The communication device according to any one of items 1 to 9, [Item 12] 1. A control method executed by a communication device configured to communicate with an imaging device capable of performing a first recording operation of dividing a moving image into a plurality of moving image files and recording the divided moving image files, comprising: a control step of executing acquisition control to acquire a new moving image file from the imaging device every time the new moving image file is generated in the imaging device when the operation mode of the communication device is a first operation mode, and not executing the acquisition control when the operation mode is a second operation mode; a detection step of detecting that the imaging device has started the first recording operation; a switching step of switching the operation mode to the first operation mode in response to detection of start of the first recording operation while the operation mode is the second operation mode; A control method comprising: [Item 13] A program for causing a computer to function as each of the means of the communication device described in any one of items 1 to 11.

[0132] The invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention. Accordingly, the following claims are appended to apprise the public of the scope of the invention. [Explanation of symbols]

[0133] 100...imaging device, 200...communication device, 201...control unit, 203...nonvolatile memory, 204...working memory, 205...operation unit, 206...display unit, 210...recording medium, 211...communication unit, 213...public network connection unit, 300...server

Claims

1. 1. A communication device configured to communicate with an imaging device capable of performing a first recording operation of dividing a moving image into a plurality of moving image files and recording the divided moving image files, a control means for executing acquisition control to acquire a new moving image file from the imaging device every time the new moving image file is generated in the imaging device when the operation mode of the communication device is a first operation mode, and not executing the acquisition control when the operation mode is a second operation mode; a detection means for detecting that the imaging device has started the first recording operation; a switching means for switching the operation mode to the first operation mode in response to detection of the start of the first recording operation while the operation mode is the second operation mode; A communication device comprising:

2. the imaging device is configured to transmit a generation notification indicating that a new moving image file has been generated to the communication device each time the new moving image file is generated; In the acquisition control, the control means acquires a new video file corresponding to the generation notification from the imaging device every time the generation notification is received from the imaging device.

2. The communication device according to claim 1.

3. the generation notification that is first transmitted by the imaging device after the start of the first recording operation includes first information indicating that the imaging device has started the first recording operation; the detection means detects that the imaging device has started the first recording operation in response to receiving the generation notification including the first information from the imaging device; 3. The communication device according to claim 2.

4. the generation notification includes a file name of a new video file corresponding to the generation notification; the first information is included in a file name included in the generation notification that is first transmitted after the start of the first recording operation; 4. The communication device according to claim 3.

5. the switching means switches the operation mode between the first operation mode and the second operation mode in accordance with a user instruction; 2. The communication device according to claim 1.

6. the imaging device is capable of selectively executing, as a recording operation of the moving image, the first recording operation or a second recording operation of recording the moving image into one moving image file; the control means executes the acquisition control when the operation mode is the first operation mode, regardless of whether the recording operation is the first recording operation or the second recording operation, and does not execute the acquisition control when the operation mode is the second operation mode.

2. The communication device according to claim 1.

7. the detection means detects that the imaging device has started the second recording operation, when the start of the second recording operation is detected while the operation mode is the second operation mode, the switching means does not switch the operation mode to the first operation mode.

7. The communication device according to claim 6.

8. the imaging device is capable of selectively executing, as a recording operation of the moving image, the first recording operation or a second recording operation of recording the moving image into one moving image file; The detection means detecting that the imaging device has started the recording operation; acquiring, in response to detection of the start of the recording operation, second information indicating whether the recording operation is the first recording operation or the second recording operation from the imaging device; detecting, based on the second information, that the imaging device has started the first recording operation or that the imaging device has started the second recording operation; 2. The communication device according to claim 1.

9. a display means for displaying a screen for prompting a user to select whether or not to switch the operation mode to the first operation mode in response to detection of the start of the first recording operation while the operation mode is the second operation mode; 2. The communication device according to claim 1, further comprising:

10. A transmitting means for transmitting the moving image file acquired by the acquisition control to a server.

2. The communication device according to claim 1, further comprising:

11. a setting means for setting identification information of the server; a transmitting means for transmitting the video file acquired by the acquisition control to a server identified by the identification information; Further provided with even if the start of the first recording operation is detected while the operation mode is the second operation mode, if the identification information is not set, the switching means does not switch the operation mode to the first operation mode.

2. The communication device according to claim 1.

12. 1. A control method executed by a communication device configured to communicate with an imaging device capable of performing a first recording operation of dividing a moving image into a plurality of moving image files and recording the divided moving image files, the control method comprising: a control step of executing acquisition control to acquire a new moving image file from the imaging device every time the imaging device generates the new moving image file when the operation mode of the communication device is a first operation mode, and not executing the acquisition control when the operation mode is a second operation mode; a detection step of detecting that the imaging device has started the first recording operation; a switching step of switching the operation mode to the first operation mode in response to detection of start of the first recording operation while the operation mode is the second operation mode; A control method comprising:

13. A program for causing a computer to function as each of the means of the communication device according to any one of claims 1 to 11.

Images