JP2019041372A - Imaging apparatus, electronic device, and method of transferring image data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve user convenience when transmitting still image data to another electronic device. An image pickup device configured to be remotely controlled from an external electronic device, the communication unit for communicating with the electronic device, and a moving image for capturing a subject and cutting out still image data. It includes an image pickup unit that generates data, a recording unit that records the moving image data generated by the image pickup unit on a recording medium, and a control unit that controls the operation of the image pickup device. When the control unit receives the first request from the electronic device, the control unit generates the moving image data according to the first request, and when the control unit receives the second request from the electronic device, the control unit generates the moving image data. According to the second request, at least one frame is cut out from the moving image data recorded on the recording medium to execute a process to generate the still image data, and the generated still image data is used as the electronic device. Transfer to. [Selection diagram] FIG. 7

Description

  The present disclosure relates to an imaging device capable of generating moving image data for extracting still image data, an electronic device that remotely controls the imaging device, and a method of transferring image data from the imaging device to the electronic device.

  Patent Document 1 discloses an imaging apparatus that captures a moving image in a mode suitable for a still image and generates still image data by cutting out a frame image from the captured moving image. With this configuration, it is possible to generate an image taken at a decisive moment, which has been difficult in the past, without being aware of the shutter chance.

  Patent Document 2 discloses an electronic device that communicates with an imaging device via USB communication and performs an instruction to the imaging device and acquisition of image data from the imaging device. The electronic device includes a communication unit and a communication control unit. The communication unit communicates with the imaging device through a plurality of buffer areas in accordance with a USB (Universal Serial Bus) communication protocol. The plurality of buffer areas respectively correspond to the plurality of end points of the imaging device. The communication control unit causes the communication unit to perform communication for acquiring image data from the imaging device through the first buffer area of the plurality of buffer areas. The communication control unit causes the imaging apparatus to transmit an instruction through the second buffer area among the plurality of buffer areas. The instruction is at least one of an imaging instruction for instructing imaging and a setting change instruction for changing the setting state of the imaging operation of the imaging apparatus. With this configuration, even when a large amount of data such as image data is received from the imaging device via USB communication, an instruction relating to imaging can be immediately transmitted to the imaging device via USB communication.

Japanese Patent Laying-Open No. 2006-32302 JP 2014-17560 A

  The present disclosure relates to an imaging device and an electronic device that improve convenience for a user when an image capturing device that captures a moving image and generates a still image from the captured moving image transmits the generated still image data to another electronic device. provide.

  A first aspect of the present disclosure is an imaging apparatus configured to be remotely controlled from an external electronic device. The imaging device includes a communication unit for communicating with the electronic device, an imaging unit for imaging a subject and generating moving image data for extracting still image data, and the moving image data generated by the imaging unit. A recording unit for recording on a recording medium; and a control unit for controlling the operation of the imaging apparatus. When receiving the first request from the electronic device, the control unit executes a process so as to generate the moving image data in accordance with the first request. When the control unit receives a second request from the electronic device, the control unit cuts out at least one frame from the moving image data recorded on the recording medium according to the second request, and extracts the still image data. Process to generate. The control unit causes the generated still image data to be transferred to the electronic device.

  A second aspect of the present disclosure is an electronic device that performs remote control on an imaging device that generates moving image data for extracting still image data. The electronic device includes a communication unit for communicating with the imaging device, a recording medium that holds the still image data generated from the moving image data in the imaging device, and a user inputs an instruction for the remote control And an operation unit for controlling the operation of the electronic device. The control unit causes the communication unit to transmit a first request for instructing generation of the moving image data to the imaging device in accordance with an instruction to start shooting input by the operation unit. The control unit instructs to generate at least one frame from the moving image data and generate the still image data when receiving a notification indicating completion of the generation of the moving image data from the imaging device. This request is transmitted to the imaging device by the communication unit. When the still image data is received from the imaging device, the control unit records the received still image data on the recording medium.

  A third aspect of the present disclosure is a method for transferring image data of an imaging apparatus that is remotely controlled from an external electronic device. When receiving the first request from the electronic device, the imaging apparatus shoots a moving image and generates moving image data in accordance with the first request. When receiving the second request from the electronic device, the imaging apparatus generates still image data by cutting out at least one frame from the generated moving image data in accordance with the second request. The imaging device transfers the generated still image data to the electronic device.

  According to the imaging device, the electronic device, and the data transfer method of the present disclosure, in the imaging device that captures a moving image and generates a still image from the captured moving image, the generated still image data is transmitted to another electronic device. User convenience can be improved.

1 is a diagram illustrating an imaging system according to the present disclosure. A block diagram showing an internal configuration of a digital camera of the present disclosure The block diagram which shows the internal structure of PC (Personal Computer) of this indication The figure which showed the screen for remote control to the photographing operation of the digital camera which is displayed on PC Diagram for explaining 4K photo mode A flowchart showing processing at the time of USB connection in a digital camera Flowchart showing processing at the time of image shooting when still image button or moving image button is operated in the imaging system The figure explaining the exchange of information between the digital camera and the PC in image capturing and image data transfer operations in the normal still image capturing mode The figure for demonstrating the process of the imaging system at the time of 4K photo photography The figure which shows the screen for confirming to a user whether transfer of the cut-out image displayed on PC is performed The figure which shows the process of the batch data transfer of the cut-out image in Embodiment 1 The figure which shows the screen of PC displayed during transfer of cutout image data The figure which shows the screen of PC displayed when the transfer of cutout image data is completed The figure which shows the screen of PC for designating the start frame and number of sheets of the clipped image to transfer in Embodiment 2 The figure which shows the data transfer process (designation of a start frame and the number of transfer images) of the cutout image in Embodiment 2. The figure explaining the button for marker setting displayed on the display part of PC in Embodiment 3 The figure which shows the marker information in Embodiment 3 The figure which shows the screen of PC for designating the start position and number of sheets of the cutout image to transfer in Embodiment 3 The figure which shows the data transfer process (designation of a start frame and the number of transfer images) of the cutout image in Embodiment 3 The figure which shows the screen of PC where the thumbnail picture for designating the cut section is displayed The figure which shows the screen of PC displayed during the acquisition of the information of a cutout image The figure which shows the data transfer process (designation by a thumbnail) of the cutout image in Embodiment 4 The figure which shows the data transfer process (designation by a thumbnail) of the cutout image in Embodiment 4 (continuation of FIG. 22) The figure which shows the screen for notifying that cutout image data is being transferred The figure which shows the data transfer process of the cutout image in Embodiment 5 The figure which shows the selection screen of 4K animation file

  Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, a detailed description of already well-known matters or a redundant description of substantially the same configuration may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art.

  The inventor provides the accompanying drawings and the following description in order for those skilled in the art to fully understand the present disclosure, and is not intended to limit the subject matter described in the claims. Absent.

(Embodiment 1)
Hereinafter, the configuration and operation of a digital camera that is an embodiment of an imaging apparatus according to the present disclosure will be described using the drawings. The digital camera described below can shoot moving images. By moving image shooting, moving image data including an image signal indicating a moving image and an audio signal recorded in synchronization with the moving image is generated.

[1. Constitution]
FIG. 1 is a diagram illustrating a configuration of an embodiment of an imaging system according to the present disclosure. The imaging system 10 includes a digital camera 100 that is an example of an imaging apparatus, and a personal computer (hereinafter referred to as “PC”) 500 that is an example of an electronic device. The electronic device is an information processing apparatus. The digital camera 100 and the PC 500 are connected by a USB cable 400. Communication between the digital camera 100 and the PC 500 is performed in accordance with an image transfer protocol (Picture Transfer Protocol, hereinafter referred to as “PTP”). This communication enables remote control of the digital camera 100 from the PC 500 and transfer of image data from the digital camera 100 to the PC 500.

[1-1. Digital camera]
FIG. 2 is a block diagram showing the internal configuration of the digital camera 100. The digital camera 100 images a subject, generates image data (data of at least one of a still image and a moving image), and records it on a recording medium. Hereinafter, each component of the digital camera 100 will be specifically described.

  As shown in FIG. 2, the interchangeable lens 301 includes an optical system including a focus lens 310, a correction lens 318, and a zoom lens 312. The interchangeable lens 301 further includes a lens controller 320, a lens mount 330, a focus lens driving unit 311, a zoom lens driving unit 313, an aperture 316, an aperture driving unit 317, an operation ring 315, an OIS (Optical Image Stabilizer) driving unit 319, a DRAM ( Dynamic Random Access Memory) 321, flash memory 322, and the like.

  The lens controller 320 controls the entire operation of the interchangeable lens 301. The lens controller 320 can control the focus lens driving unit 311, the OIS driving unit 319, and the diaphragm driving unit 317 so as to drive the focus lens 310, the correction lens 318, and the diaphragm 316, respectively. In addition, the lens controller 320 can control the zoom lens driving unit 313 to receive an operation by the user of the operation ring 315 and drive the zoom lens 312 according to the operation.

  The OIS drive unit 319 includes a drive mechanism configured with, for example, a magnet and a flat plate coil. The OIS drive unit 319 controls the drive mechanism based on a detection signal from a gyro sensor (not shown). With this control, the OIS driving unit 319 shifts the correction lens 318 within a plane perpendicular to the optical axis of the optical system in accordance with the shake of the interchangeable lens 301. Thereby, the influence (for example, image blurring) on the captured image due to camera shake is reduced. Note that the gyro sensor detects a shake of the interchangeable lens 301.

  The lens controller 320 is connected to the DRAM 321 and the flash memory 322, and can write information into and read data from these memories as necessary. The lens controller 320 can communicate with the controller 130 of the camera body 102 via the lens mount 330. The lens controller 320 may be configured with a hard-wired electronic circuit or a microcomputer using a program.

  The lens mount 330 is connected to the body mount 140 of the camera body 102 and mechanically and electrically connects the interchangeable lens 301 and the camera body 102. When the interchangeable lens 301 and the camera body 102 are connected, the lens controller 320 and the controller 130 can communicate with each other. The body mount 140 can transmit a signal received from the lens controller 320 via the lens mount 330 to the controller 130 of the camera body 102.

  The camera body 102 includes a CCD (Charge Coupled Device) image sensor 143 and an AFE (Analog Front End) 144.

  The CCD image sensor 143 captures a subject image formed through the interchangeable lens 301 and generates image information. Note that another type of image sensor (for example, a CMOS image sensor) may be used as the image sensor.

  The AFE 144 suppresses noise by correlated double sampling for the image information read from the CCD image sensor 143, amplifies the input range width of the A / D converter by an analog gain controller, and performs A / D conversion by the A / D converter. To implement.

  The camera body 102 further includes a built-in microphone 111 (an example of a sound input unit) for inputting sound.

  The built-in microphone 111 includes two microphones in order to separately collect main sounds (that is, recording target sounds) from the left and right directions. Each microphone converts an audio signal into an electric signal (for example, an analog audio signal). The analog audio signal from each microphone is input to the analog audio processing unit 115.

  The analog audio processing unit 115 amplifies the analog audio signal input from the built-in microphone 111, converts it to a digital audio signal, and outputs the digital audio signal to the digital image / audio processing unit 120.

  The digital image / sound processor 120 performs various processes on the image information output from the AFE 144 and the sound signal input from the analog sound processor 115. For example, the digital image / sound processing unit 120 performs gamma correction, white balance correction, flaw correction, encoding processing, and the like on the image information in accordance with an instruction from the controller 130. The digital image / audio processing unit 120 performs various processes on the audio signal in accordance with instructions from the controller 130. The digital image / sound processing unit 120 may be realized by a hard-wired electronic circuit, or may be realized by a microcomputer that executes a program. A circuit for realizing the digital image / audio processing unit 120 may be integrated in one or a plurality of semiconductor integrated circuits. For example, the digital image / sound processing unit 120 is configured by a CPU (Central Processing Unit), an FPGA (Field-Programmable Gate Array), an ASIC (Application Specific Integrated Circuit), or a DSP (Digital Signal).

  The display unit 190 is disposed on the back surface of the digital camera 100. The display unit 190 may be configured by a liquid crystal display or an organic EL (Electro Luminescence) display. The display unit 190 displays an image based on the image information processed by the digital image / sound processing unit 120.

  The viewfinder 191 is disposed at the upper back of the digital camera 100. Similar to the display unit 190, the viewfinder 191 displays an image based on the image information processed by the digital image / audio processing unit 120. The image information may be displayed on both the display unit 190 and the viewfinder 191 at the same time, or may be displayed on only one of them.

  The controller 130 controls the overall operation of the digital camera 100. The controller 130 may be realized by a hard-wired electronic circuit, or may be realized by a microcomputer that executes a program. Further, the controller 130 may be realized as one semiconductor chip integrally with the digital image / audio processing unit 120 and the like. For example, the controller 130 can be configured by a CPU, an MPU (Micro Processing Unit), an FPGA, an ASIC, a DSP, or the like alone or integrally with the digital image / audio processing unit 120.

  A ROM (Read Only Memory) 170 stores a program to be executed by the controller 130. The program is, for example, a program for overall control of the operation of the entire digital camera 100 in addition to a program related to autofocus control (AF control), automatic exposure control (AE control), and flash emission control. The ROM 170 stores various conditions and settings regarding the digital camera 100. The ROM 170 does not need to exist outside the controller 130 (that is, separately from the controller 130), and may be incorporated in the controller 130. In the present embodiment, the ROM 170 is a flash ROM.

  A RAM (Random Access Memory) 150 functions as a work memory for the digital image / sound processor 120 and the controller 130. The RAM 150 is realized by an SDRAM (Synchronous Dynamic Random Access Memory) or a flash memory. The RAM 150 also functions as an internal memory for recording image information and audio signals.

  The memory card 160 is a detachable recording medium having a nonvolatile storage element such as a flash memory inside. The memory card 160 is an SD card, for example. The memory card 160 is inserted into the card slot 165. Under the control of the controller 130, the card slot 165 records moving image data and still image data generated by image shooting in the memory card 160, and reads moving image data and still image data from the memory card 160. The card slot 165 is an example of a recording unit of the present disclosure.

  The operation unit 180 is a general term for operation interfaces such as operation buttons and operation dials arranged on the exterior of the digital camera 100. The operation unit 180 receives an operation by a user. For example, the operation unit 180 includes a release button, a power switch, and a mode dial provided on the upper surface of the digital camera 100, a center button, a cross button, and a touch panel provided on the back surface of the digital camera 100. When receiving an operation by the user, the operation unit 180 notifies the controller 130 of signals for instructing various operations.

  The communication unit 195 is a communication interface circuit for connecting to an external device according to a predetermined communication standard. In the present embodiment, the communication unit 195 includes an interface circuit and a connection terminal for performing communication according to the USB (Universal Serial Bus) standard.

[1-2. PC]
FIG. 3 is a block diagram showing an internal configuration of a PC (personal computer) 500. The PC 500 includes a controller 511 that controls the overall operation, a display unit 513 that performs screen display, an operation unit 515 that is operated by a user, and a data storage unit 517 that stores data and programs.

  The display unit 513 is configured by, for example, a liquid crystal display or an organic EL display. The operation unit 515 is a device for a user to give an instruction, and includes, for example, at least one of a keyboard, a mouse, a touch panel, and the like.

  The data storage unit 517 is a recording medium that stores parameters, data, and programs necessary for the PC to realize its functions. The data storage unit 517 stores a control program executed by the controller 511 and various data. The data storage unit 517 is constituted by, for example, a hard disk (HDD), a semiconductor storage device (SSD), or a flash memory.

  The controller 511 is configured by a CPU or MPU, and realizes a predetermined function by executing a predetermined control program stored in the data storage unit 517. The control program executed by the controller 511 may be provided via a network or may be provided by a recording medium such as a CD-ROM. The function of the controller 511 may be realized by cooperation of hardware and software, or may be realized only by a hardware circuit. That is, the controller 511 can be configured by not only a CPU and MPU but also a DSP, FPGA, ASIC, or the like.

  The PC 500 further includes a communication unit 518 for connecting to an external device (in this embodiment, the digital camera 100). The communication unit 518 includes an interface circuit and a connection terminal that perform data communication with an external device in accordance with the USB standard. The PC 500 may further include a network interface 519 for connecting to the network 700. A network interface 519 is a circuit that performs communication in accordance with standards such as IEEE 802.11 and WiFi.

[2. Operation]
Hereinafter, the operation of the imaging system 10 having the above configuration will be described. The digital camera 100 can capture a subject and generate moving image data and still image data. The moving image data and still image data are stored in the memory card 160 in the digital camera 100. Data in the memory card 160 is transferred from the digital camera 100 to the PC 500 in accordance with a user instruction.

[2-1. Remote control of digital camera]
The imaging system 10 is configured to be able to remotely control the digital camera 100 from the PC 500 using an extended function of PTP (Picture Transfer Protocol). Therefore, the PC 500 and the digital camera 100 are connected via the USB cable 400. The PC 500 can instruct the digital camera 100 to perform a shooting operation and can instruct transfer of image data from the digital camera 100 to the PC 500 in accordance with a user operation.

  FIG. 4 is a diagram illustrating an example of an operation screen displayed on the display unit 513 of the PC 500 for remote control of the digital camera 100. The operation screen 601 includes an area 610 for displaying an image captured by the CCD 143 of the digital camera 100 in real time (that is, live view display) during moving image shooting or standby for shooting. The operation screen 601 further includes an area 620 for displaying buttons 622, 624, and 626 for instructing the digital camera 100. The moving image button 622 receives an instruction to start / end moving image shooting. The AF button 624 receives a setting for enabling / disabling the autofocus function. The still image button 626 receives an instruction to shoot a still image. The area 620 also displays various settings 628 such as shutter speed, exposure, shooting mode (P / A / S / M), drive mode (single shooting, continuous shooting, 4K photo), and image size. ing.

[2-2.4K photo mode]
The digital camera 100 has a single shooting mode in which images are taken one by one and a continuous shooting mode in which a plurality of images are continuously shot in one operation as drive modes for taking still images. In addition to these modes, the digital camera 100 further has a 4K photo mode. The 4K photo mode is a mode for shooting a high-definition moving image (hereinafter referred to as “4K photo moving image”) at a high resolution such as 4K or 6K. After shooting the 4K photo moving image, a desired frame is cut out from the frame group constituting the 4K photo moving image, thereby generating a still image (see, for example, Patent Document 1). Furthermore, the digital camera 100 has a normal moving image mode as a drive mode for shooting a moving image. That is, the digital camera of this embodiment can shoot a moving image in either the 4K photo mode or the normal moving image mode.

  FIG. 5 is a diagram for explaining generation of a still image from a 4K photo moving image. A 4K photo moving image is composed of a plurality of frame images continuous in time. Still image data is generated by cutting out a desired frame image from a plurality of frame images constituting a 4K photo moving image. In this way, since an image (frame image) of a desired scene is cut out as a still image from a moving image, the user does not need to be aware of the shutter chance, and an image in which a decisive moment that has been difficult in the past is generated can be generated. It becomes possible. That is, it is possible to easily take a picture of a happening or accident that does not know when it occurs or a picture of an instantaneous state of a subject whose state changes over time (for example, liquid or flame).

  Each frame image constituting the 4K photo moving image is cut out as a still image. Therefore, in the 4K photo moving image, the image quality of the cut out still image is given priority over the quality and image quality as a moving image. For this reason, when the 4K photo mode is set, various settings relating to shooting are automatically set to specific settings suitable for recording still images (see, for example, Patent Document 1). For example, regarding the image quality setting (resolution), in the normal moving image mode, a value designated by the user is set within a range of VGA to 4K (around 4000 pixels × 2000 pixels). On the other hand, in the 4K photo mode, the image quality setting (resolution) is set to the highest resolution value (for example, 4K or 6K) that can be set in the digital camera 100. As a result, high-quality frame images can be recorded, and high-quality still images can be cut out.

[2-3. USB connection mode]
The digital camera 100 has the following three modes as operation modes (hereinafter referred to as “USB connection mode”) when an external device (for example, the PC 500) is connected via a USB cable.

  1) PC mode: a mode in which the memory card 160 operates as a reader. In this mode, data recorded on the memory card 160 can be read from an external device.

  2) PictBridge mode: A mode for printing an image stored in the memory card 160 with a printer. In this mode, the digital camera 100 and the printer can be directly connected, and the image stored in the digital camera 100 can be printed by the printer.

  3) Remote control mode: A mode for remotely controlling the digital camera 100 from the PC 500. In this mode, the PC 500 and the digital camera 100 perform communication according to PTP.

  In the digital camera 100, the USB connection mode is set to one of the above three modes.

[2-4. Processing during USB connection]
Processing in the digital camera 100 when an external device is connected to the digital camera 100 via a USB connection will be described with reference to the flowchart of FIG.

  In FIG. 6, first, the controller 130 of the digital camera 100 determines which of the USB connection modes is set (S11, S16).

  When the USB connection mode is set to the remote control mode, the controller 130 determines whether or not the digital camera 100 is set to the shooting mode (S12). If the digital camera 100 is not in the shooting mode (NO in S12), the controller 130 sets the digital camera 100 to the shooting mode (S15).

  Thereafter, the controller 130 performs connection settings for remote control (S13). For example, the following settings are made as connection settings for remote control.

1) Device Descriptor setting The ID for RemoteControl is set to the vendor ID.

2) Configuration Descriptor setting Set Class, Subclass, and Protocol for StillImage.

3) PTP: GetDeviceInfo response setting Sets commands, events, and device property definitions as extended settings for the remote control mode.

  On the other hand, when the USB connection mode is set to the PictBridge mode (NO in S11 and YES in S16), the controller 130 determines whether or not the digital camera 100 is set to the playback mode (S17). If the digital camera 100 is not in the playback mode (NO in S17), the controller 130 sets the digital camera 100 in the playback mode (S19).

  Thereafter, the controller 130 performs connection settings for PictBridge (S18). For example, the following settings are performed as connection settings for PictBridge.

1) Device Descriptor setting An ID for PictBridge is set in the vendor ID.

2) Configuration Descriptor setting Set Class, Subclass, and Protocol for StillImage.

3) PTP: GetDeviceInfo response setting Sets the PTP command, event, and device property definition used in PictBridge.

  When the USB connection mode is neither the remote control mode nor the PictBridge mode (NO in S11 and NO in S16), that is, in the PC mode, the controller 130 performs connection settings for the PC mode (S20). For example, the following settings are performed as connection settings for the PC mode.

1) Device Descriptor setting The PC mode ID is set in the vendor ID.

2) Configuration Descriptor setting Class, Subclass, and Protocol for bulk-only transfer are set in the mass storage class.

  When the connection setting for remote control (S13), the connection setting for PictBridge (S18), or the connection setting for PC mode (S20) is completed, the controller 130 establishes USB communication between USB devices specified by the USB standard. USB connection processing is performed (S14). The USB connection process is a predetermined process defined by the USB standard for establishing USB communication between USB devices.

[2-5. Processing during image capture]
An operation when an image is captured in the 4K photo mode will be described as an example of an operation of capturing, extracting, and transferring a moving image in the imaging system 10. In the following description, it is assumed that the digital camera 100 is set to a remote control mode that enables remote control from the PC 500. In this case, the shooting operation of the digital camera 100 can be remotely controlled by the still image button 626 or the moving image button 622 on the operation screen 601 (see FIG. 4) displayed on the display unit 513 of the PC 500.

  FIG. 7 is a flowchart showing processing at the time of image capturing in the imaging system 10. Processing at the time of image shooting will be described with reference to the flowchart of FIG.

  When the user presses the still image button 626 for instructing to capture a normal still image on the PC 500 (YES in S31), the digital camera 100 determines whether or not the 4K photo mode is set (S32). . If the 4K photo mode is not set (NO in S32), the digital camera 100 executes a normal still image shooting process (S40). Specifically, predetermined image processing is performed on the image signal generated by the CCD 143 to generate still image data.

  On the other hand, when the 4K photo mode is set (YES in S32), the digital camera 100 starts moving image shooting (S33). The shooting of the moving image for 4K photo continues while the still image button 626 is kept pressed (S33, S34).

  When the moving image or still image shooting process ends (S34, S40), the digital camera 100 records the shot image data in the memory card 160 (S35).

  If it is determined in step S31 that the still image button 626 has not been pressed, the controller 130 on the PC 500 causes the user to press the moving image button 622 for instructing shooting of a moving image or a moving image for 4K photo. It is determined whether or not (S43). When the movie button 622 is pressed (YES in S43), shooting of a movie is started according to the set mode (S44). For example, shooting of a moving image for 4K photo continues while the moving image button 622 is kept pressed (S44, S45). When the moving image shooting process ends (YES in S45), the controller 130 records the shot moving image data in the memory card 160 (S35).

  After step S35, the controller 130 of the digital camera 100 determines whether or not the drive mode of the digital camera 100 is the 4K photo mode (S36A).

  When the drive mode is not the 4K photo mode (NO in S36A), the controller 130 transmits an image addition notification to the PC 500 (S41). Thereafter, in accordance with a request from the PC 500, the controller 130 transfers the moving image data or still image data generated by shooting to the PC 500 (S42).

  On the other hand, when the drive mode is the 4K photo mode (YES in S36A), the digital camera 100 determines whether or not the recorded moving image data is data captured by operating the still image button 626 (S36B). If the recorded moving image data is not data captured by operating the still image button 626 (NO in S36B), for example, if it is data captured by operating the moving image button 622, the process proceeds to step S41 described above. On the other hand, when the recorded moving image data is data taken by operating the still image button 626 (YES in S36B), the digital camera 100 shifts from the shooting mode to the cut-out mode (S37).

  After shifting to the cut-out mode, the digital camera 100 transmits a “cut-out preparation OK notification” indicating that the image is ready to be cut out to the PC 500 (S38). After that, the digital camera 100 performs a cut-out image transfer process (S39). Specifically, still image data is cut out from 4K photo moving image data recorded in the 4K photo mode and transmitted to the PC 500.

[2-5-1. Transfer still image data]
Hereinafter, the exchange of information between the digital camera 100 and the PC 500 regarding the image shooting in the still image shooting mode such as the single shooting mode or the continuous shooting mode and the subsequent image data transfer operation will be specifically described with reference to FIG. explain.

  When the still image button 626 is pressed on the operation screen 601 of the PC 500 (S100), a still image shooting request is transmitted from the PC 500 to the digital camera 100 (S101). Upon receiving the still image shooting request, the digital camera 100 performs a still image shooting process (S102), and then transmits a response indicating that the still image shooting has been completed to the PC 500 (S103). Furthermore, the digital camera 100 transmits an image addition notification for notifying that a new image has been added to the PC 500 (S104). The PC 500 can recognize that an image newly captured by the digital camera 100 is added by receiving the image addition notification.

  Thereafter, the PC 500 transmits to the digital camera 100 an image information acquisition request for requesting information regarding the captured still image (S105). When the digital camera 100 receives the image information acquisition request, the digital camera 100 acquires information about the captured image (S106). Specifically, the digital camera 100 acquires a still image data size, an image format, and the like. Thereafter, in response to the image information acquisition request, the digital camera 100 transmits image information including the data size, image format, and the like of the still image to the PC 500 (S107).

  When receiving the image information, the PC 500 transmits an image data acquisition request for requesting transfer of image data to the digital camera 100 (S108). When the digital camera 100 receives the image data acquisition request, the digital camera 100 sequentially transfers image data relating to the captured image to the PC 500 (S109, S110). The PC 500 stores the image data received from the digital camera 100 in the data storage unit 517 (S111).

  Information exchange between the digital camera 100 and the PC 500 regarding image shooting and image data transfer operations in the moving image shooting mode is the same as that in the still image shooting mode.

[2-5-2. Cutout image data transfer]
Next, as an example of the exchange between the digital camera 100 and the PC 500 related to the shooting and transfer of moving images in the imaging system 10, the exchange related to the image shooting and transfer of image data in the 4K photo mode will be given and will be specifically described with reference to FIG. Explained. FIG. 9 shows processing when the imaging operation of the digital camera 100 is remotely controlled from the PC 500.

  When the user presses the still image button 626 (S130), the PC 500 transmits a 4K photo shooting start request (an example of a first request) to instruct the start of shooting in the 4K photo mode to the digital camera 100. (S131). In response to this request, the digital camera 100 starts shooting in the 4K photo mode (S132). After shooting in the 4K photo mode, the digital camera 100 transmits a response indicating the start of shooting in the 4K photo mode to the PC 500 (S133).

  The digital camera 100 continues shooting in the 4K photo mode while the still image button 626 is pressed by the user.

  When the user releases the still image button 626 (S134), the PC 500 transmits a 4K photo shooting end request for instructing the end of shooting to the digital camera 100 (S135). In response to this request, the digital camera 100 ends shooting in the 4K photo mode (S136), and transmits a response indicating the end of shooting to the PC 500 (S137). At this time, 4K photo moving image data shot in the 4K photo mode is recorded in the memory card 160.

  Thereafter, the digital camera 100 transitions from the shooting mode to the cut-out mode (S138). When the transition to the cutout mode is completed, the digital camera 100 transmits to the PC 500 a cutout preparation OK notification indicating that a still image is ready to be cut out (S139).

  In the present embodiment, cut-out image (still image) data is generated and transferred from all frame images constituting a 4K photo moving image shot in the 4K photo mode. Hereinafter, the process of transferring all captured frame images as still image data will be referred to as “batch data transfer”. In batch data transfer, the same number of cut-out images as the number of frame images constituting a 4K photo moving image are generated and transferred.

  When receiving the cutout preparation OK notification, the PC 500 transmits a cutout image information request for requesting cutout image information to the digital camera 100 (S141). The cut-out image information includes the number of all frame images.

  The digital camera 100 acquires the number of cutout images (that is, the number of frames) from the 4K photo moving image data (S142). The digital camera 100 transmits cut-out image information including information regarding the acquired number to the PC 500 (S143).

  When receiving the cutout image information, the PC 500 displays a confirmation screen on the display unit 513. FIG. 10 shows an example of the confirmation screen 603. The confirmation screen 603 is a screen for confirming whether or not the batch data transfer can be started for the user.

  When an instruction to start the clipping process ("Yes" input) is received from the user on the confirmation screen 603 (S144), the PC 500 issues a clipping start request (an example of a second request) for instructing the clipping start. It transmits to the digital camera 100 (S145). Upon receiving this cutout start request, the digital camera 100 reads 4K photo moving image data from the memory card 160, sequentially cuts out frame images from the 4K photo moving image data (S146), and transfers the cut image data to the PC 500 ( S147). The PC 500 stores the cut-out image data received from the digital camera 100 in the data storage unit 517 (S148).

[2-5-3. Batch data transfer]
Hereinafter, the details of the batch data transfer processing (steps S146 and S147 in FIG. 9) of the cutout image will be described. FIG. 11 is a diagram illustrating batch data transfer processing of cut-out images in the imaging system 10.

  In FIG. 11, when the digital camera 100 (controller 130) receives a cutout start request (S145) from the PC 500, the digital camera 100 (controller 130) sets a pointer N to 1 (S151). The pointer N is a value indicating a frame image to be processed.

  Next, the digital camera 100 acquires the image data of the Nth frame from the 4K photo moving image (S152). Specifically, the controller 130 executes processing so that the digital image / sound processing unit 120 reads 4K photo moving image data from the memory card 160 and cuts out data of the Nth frame. Subsequently, the controller 130 executes a process so that the digital image / sound processing unit 120 adds a JPEG header to the cut frame data and generates cut image data (S153). The clipped image data is stored in the RAM 150.

  Next, the digital camera 100 transmits a transfer preparation OK notification indicating that the cut-out image data is ready to be transferred to the PC 500 (S154). The transfer preparation OK notification includes the size of the still image data. When receiving the transfer preparation OK notification (162), the PC 500 secures a recording area for saving the cut-out image in the data storage unit 517 based on the size of the still image data (S163). Thereafter, the PC 500 transmits a cut-out image data acquisition request to the digital camera 100 (S155).

  Upon receiving the cut image data acquisition request from the PC 500, the digital camera 100 reads the cut image data from the RAM 150 and transfers it to the PC 500 (S156). The PC 500 stores the received cutout image data in the data storage unit 517 (S164).

  During the transfer of the image data, the PC 500 displays a screen 604 showing the progress status of the data transfer as shown in FIG. When the user presses a cancel button on this screen 604, data transfer is stopped. That is, when the cancel button is pressed by the user (YES in S165), the PC 500 transmits a cutout cancellation request to the digital camera 100 (S168). When the digital camera 100 receives the cutout cancellation request (YES in S157), the digital camera 100 ends the cutout mode (S158) and shifts to the shooting mode.

  If the digital camera 100 does not receive a cutout cancellation request from the PC 500 (NO in S157), the digital camera 100 sets the pointer N to N + 1 (S161), and acquires the image data of the (N + 1) th frame (S152). Thereafter, cut-out image data is generated and transferred to the PC 500 (S153, S156). As described above, for all the frames constituting the 4K photo moving image (S160), when the transfer of the cutout image data is completed (YES in S160), the digital camera 100 ends the cutout mode (S158). On the other hand, when the transfer of the clipped image data is completed for all frames (YES in S166), the PC 500 displays a transfer completion message as shown in FIG. 13 (S167).

  As described above, according to the imaging system 10 of the present embodiment, when an image is captured in the 4K photo mode, a plurality of still image data generated in the digital camera 100 is collectively transferred to the PC 500. Thereby, it is possible to improve the convenience of the user regarding the transfer of the image data shot in the 4K photo mode.

[3. Effect, etc.]
The digital camera 100 or the camera body 102 (an example of an imaging device) according to the present embodiment is an imaging device that can be remotely controlled from a PC 500 (an example of an external electronic device). The digital camera 100 or the camera body 102 has a communication unit 195 for communicating with the PC 500 and a CCD 143 (imaging unit) that captures a subject and generates 4K photo moving image data (an example of moving image data) for extracting still image data. An example), a card slot 165 (an example of a recording unit) that records moving image data generated by the CCD 143 on a memory card 160 (an example of a predetermined recording medium), and an operation of the digital camera 100 or the camera body 102. Controller 130 (an example of a control unit).

  When the controller 130 receives a 4K photo shooting start request (an example of a first request) from the PC 500, the controller 130 executes processing to generate 4K photo moving image data in accordance with the request. For example, the controller 130 controls the CCD 143 and the digital image / audio processing unit 120 so as to generate 4K photo moving image data. When the controller 130 receives a clipping start request (an example of a second request) from the PC 500, the controller 130 clips at least one frame from the 4K photo moving image data recorded on the memory card 160 in accordance with the request, and still image data. The process is executed to generate For example, the controller 130 controls the digital image / sound processing unit 120 so as to generate still image data by cutting out at least one frame from the recorded 4K photo moving image data. Alternatively, the controller 130 itself generates at least one frame by cutting out at least one frame from the recorded 4K photo moving image data. In addition, the controller 130 controls the communication unit 195 so as to transfer the generated still image data to the PC 500.

  The PC 500 (an example of an external electronic device) is an electronic device that remotely controls the digital camera 100 or the camera body 102 that can generate a 4K photo moving image (an example of moving image data for extracting still image data). is there. The PC 500 includes a communication unit 518 for communicating with the digital camera 100 or the camera body 102, and a data storage unit 517 for storing still image data generated from 4K photo moving image data in the digital camera 100 or the camera body 102 (a recording medium). An example), an operation unit 515 in which a user inputs an instruction for remote control, and a controller 511 (control unit) that controls the operation of the PC 500.

  The controller 511 communicates a 4K photo shooting start request (first request) instructing generation of 4K photo moving image data to the digital camera 100 or the camera body 102 in accordance with the shooting start instruction input from the operation unit 515. The data is transmitted to the unit 518 (S131). When the controller 511 receives a notification indicating the completion of the generation of the 4K photo moving image data from the digital camera 100 or the camera body 102 (S137, S139), the controller 511 sends a cutout start request (second request) to the digital camera 100 or The camera body 102 is transmitted to the communication unit 518 (S145). The clipping start request is a request for instructing to generate still image data by clipping at least one frame from 4K photo moving image data. When the controller 511 receives still image data from the digital camera 100 or the camera body 102, the controller 511 records the received still image data in the data storage unit 517 (S148).

  The image data transfer method according to the present embodiment is a method for transferring image data of the digital camera 100 or the camera body 102 (an example of an imaging device) that is remotely controlled from the PC 500 (an example of an external electronic device). .

  When the digital camera 100 or the camera body 102 receives a 4K photo shooting start request (an example of the first request) from the PC 500, the digital camera 100 or the camera body 102 takes a 4K photo movie (an example of a moving image) according to the first request. Generate video data.

  When the digital camera 100 or the camera body 102 receives a cutout start request (an example of a second request) from the PC 500, the digital camera 100 or the camera body 102 cuts out at least one frame from the generated moving image data according to the second request, and still image data Is generated.

  The digital camera 100 or the camera body 102 transfers the generated still image data to the PC 500.

  With the above configuration, when shooting a 4K photo moving image, still image data is automatically generated from the 4K photo moving image data and transferred to the PC 500 without operating the digital camera 100 or the camera body 102. Can be improved.

(Embodiment 2)
In the first embodiment, the configuration (collective data transfer) of the imaging system 10 that cuts out image data of all frames constituting a 4K photo moving image and transfers the image data to the PC 500 after completion of shooting in the 4K photo mode has been described. The configuration of the present disclosure is not limited to this, and only some of the image data of all the frames constituting the 4K photo moving image may be cut out and transferred to the PC 500.

  Therefore, in the present embodiment, a configuration of the imaging system 10 that cuts out and transfers only some of the frames specified by the user will be described. Specifically, the imaging system 10 receives from the user the designation of the start frame number, that is, what number the frame from which clipping is to start is. Further, the imaging system 10 accepts designation of how many frames are cut out from a designated number of frames (hereinafter referred to as a start frame), that is, the number of frames. As a result, as many cutout images as the number of frames specified by the user are generated and transferred.

  The configuration and operation of the imaging system 10 of the present embodiment are basically the same as those of the first embodiment. In the following, differences from the imaging system 10 of the present embodiment from that of the first embodiment will be mainly described.

  In the first embodiment, in the process shown in FIG. 9, when receiving the cut-out image information (S143), the PC 500 confirms whether to start batch data transfer as shown in FIG. 10 on the display unit 513. A confirmation screen 603 is displayed (S144). On the other hand, in this embodiment, when receiving the cut-out image information (S143), the PC 500 displays the input screen 606 shown in FIG. 14 instead of the confirmation screen 603 shown in FIG. The input screen 606 includes areas 606a and 606b for designating a cutout start frame and the number of frames to be transferred (number of cutout images), respectively. The cutout start frame and the number of frames to be transferred are information for specifying the range of frames to be cut out. When the user designates the start frame and the number of frames to be transferred on the input screen 606 shown in FIG. 14, the PC 500 transmits a cutout start request to the digital camera 100 (S145). Upon receiving the cutout start request, the digital camera 100 cuts out a frame image from the 4K photo moving image according to the designated frame range, generates still image data from the cutout frame image, and transfers the still image data to the PC 500.

  FIG. 15 is a diagram for explaining a detailed operation of the imaging system 10 after a cut-out start request is transmitted from the PC 500 in the present embodiment. The process shown in FIG. 15 corresponds to the process shown in FIG. 11 in the first embodiment.

  At the start of the process shown in FIG. 15, the input screen 606 shown in FIG. 14 is displayed on the display unit 513 of the PC 500. In the areas 606a and 606b on the input screen 606, when the user designates the start frame number and the number of transfer frames, and the cut start button 606c is pressed, the PC 500 sends a cut start request to the digital camera 100. Transmit (S145). At this time, the cutout start request includes information indicating the cutout type, the designated start frame number, and the number of transfer frames. In the present embodiment, “partial cutout” is designated as the cutout type.

  Upon receiving the cutout start request, the digital camera 100 recognizes that it is a partial cutout process, and first sets the start frame number designated on the input screen to the pointer N (S151b). Further, the digital camera 100 cuts out image data of the Nth frame from the 4K photo moving image, generates cut-out image data (S152, S153), and transfers the data to the PC 500 (S156). Thereafter, while sequentially moving the pointer N, the cut image is generated from the 4K photo moving image by the number of frames designated on the input screen 606 (S160b, S161), and transferred to the PC 500 (S153, S156).

  Processes other than those shown in FIG. 15 are the same as those described in the first embodiment (FIG. 11), and thus description thereof is omitted here.

  Through the processing described above, the imaging system 10 can generate a cutout image and transfer it to the PC 500 from the frame at the desired frame start position specified by the user within the range of the desired number of frames. Thereby, since the imaging system 10 can transfer only image data required by the user, it is possible to reduce wasteful consumption of the storage capacity of the data storage unit 517 in the PC 500.

(Embodiment 3)
In the present embodiment, another configuration of the imaging system 10 that cuts out and transfers only some of the frames specified by the user will be described. Hereinafter, in the imaging system 10 of the present embodiment, differences from the second embodiment will be mainly described.

  The PC 500 according to the present embodiment has a function of remotely marking a 4K photo moving image while the digital camera 100 captures an image in the 4K photo mode. The marking may be performed at any timing designated by the user. For example, the PC 500 displays a screen as shown in FIG. 16 on the display unit 513 during image shooting in the 4K photo mode. This screen 601 is provided with a marker setting button 627 for the user to perform marking.

  When the user operates the marker setting button 627 during shooting of a 4K photo moving image, a marker setting request is transmitted from the PC 500 to the digital camera 100. Upon receiving this marker setting request, the digital camera 100 adds a marker to the frame being shot. Specifically, the digital camera 100 updates the marker information shown in FIG. As shown in FIG. 17, the marker information is managed by associating the marker number with the frame number to which the marker is attached. When the controller 130 of the digital camera 100 receives the marker setting request, the controller 130 associates the marker number with the marker number in the marker information (that is, the frame number) when the marker information is received. The marker may be added to a plurality of frames in the 4K photo moving image.

  In the second embodiment, the start frame of the clipped image is specified by the frame number. However, in the present embodiment, the start frame of the clipped image is specified by the marker number.

  For this reason, in the present embodiment, in the processing shown in FIG. 9, the PC 500 receives information indicating the total number of frames, information indicating the number of markers, and marker information as cut-out image information (S143). Then, instead of the input screen 606 shown in FIG. 14 in the second embodiment, an input screen 607 shown in FIG. 18 is displayed. The input screen 607 shown in FIG. 18 has a “selected marker” area 607a. In this area 607a, the user designates a marker number as information indicating the start frame of the clipped image.

  FIG. 19 is a diagram for describing a detailed operation of the imaging system after a cut start request is transmitted from PC 500 in the present embodiment. The process shown in FIG. 19 corresponds to the process shown in FIG. 15 in the second embodiment.

  At the start of the process shown in FIG. 19, an input screen 607 shown in FIG. 18 is displayed. In the areas 607a and 607b on the input screen 607, when the user specifies a marker number and the number of transfer frames and the cutout start button 607c is pressed, the PC 500 transmits a cutout start request to the digital camera 100. (S145). At this time, the cutout start request includes information indicating the cutout type, the designated marker number, and the number of transfer frames. In the present embodiment, “marker cutout” is designated as the cutout type.

  Upon receiving the cutout start request, the digital camera 100 recognizes that it is a marker cutout process, and first sets a frame number corresponding to the designated marker number in the pointer N (S151c). The controller 511 of the digital camera 100 can recognize the frame number corresponding to the designated marker number by referring to the marker information.

  Further, the digital camera 100 cuts out image data of the Nth frame from the 4K photo moving image, generates cut-out image data (S152, S153), and transfers the data to the PC 500 (S156). Thereafter, while sequentially moving the pointer N, the cut image is generated from the 4K photo moving image by the number of frames designated on the input screen 607 (S160b, S161), and transferred to the PC 500 (S153, S156).

  Since the processing other than the above shown in FIG. 19 is the same as that described in the second embodiment, description thereof is omitted here.

  In the above example, a configuration has been described in which images specified by the designated number are continuously cut out with the frame indicated by the marker number designated by the user as the start position. The method for designating the cut-out frame using the marker number is not limited to this. For example, the PC 500 may accept designation of a plurality of marker numbers by the user. In this case, the PC 500 may transmit a cutout start request including a plurality of designated marker numbers to the digital camera 100. The digital camera 100 may cut out image data of a frame corresponding to each of the plurality of marker numbers included in the received cutout start request, and may transmit the image data to the PC 500. Thereby, the imaging system 10 can cut out a plurality of images arbitrarily designated by the user.

  As described above, according to the imaging system 10 of the present embodiment, an image marked in advance by the user can be set as a cutout start position. For this reason, the user can save time and labor when searching for the cutout start position. Therefore, user convenience can be improved.

(Embodiment 4)
In Embodiments 2 and 3, the range of frames to be extracted from the 4K photo moving image is specified by the extraction start position and the number of frames. The method for specifying the frame group to be cut out from the 4K photo moving image is not limited to these methods. In this embodiment, a configuration for designating a frame to be extracted from a 4K photo moving image from a thumbnail image will be described.

  FIG. 20 is a diagram showing an input screen displayed on the PC 500 for designating a clipping range (section) using a thumbnail image. The input screen 609 includes a cutout range designation window 630 in which a plurality of thumbnail images 632 are arranged. Each thumbnail image 632 is a thumbnail image for each of the frame images constituting the 4K photo moving image shot by the digital camera 100. The user designates a frame cutout range by designating the thumbnail images at the start position and the end position on the input screen 609. In the example of FIG. 20, the range from the frame image “C” to the frame image “N” is designated as the cutout range.

  In the present embodiment, a message screen 608 shown in FIG. 21 is displayed instead of the input screen 606 shown in FIG. 14 in the second embodiment. This message screen 608 is a screen for notifying the user that the PC 500 is acquiring cut-out image information from the digital camera 100. When the acquisition of the cut-out image information is completed, the PC 500 transmits a cut-out start request to the digital camera 100 (S145).

  22 and 23 are diagrams for explaining detailed operations of the imaging system 10 after a cut-out start request is transmitted from the PC 500 in the present embodiment. The processes shown in FIGS. 22 and 23 correspond to the process shown in FIG. 11 in the first embodiment.

  The cutout start request from the PC 500 includes information indicating the cutout type. In this embodiment, “thumbnail acquisition” is designated as the cutout type. Upon receiving the cutout start request (S145), the digital camera 100 recognizes that it is a thumbnail acquisition process, cuts out a frame image from the 4K photo moving image data, and generates cutout image data (S153d). Next, the digital camera 100 generates a thumbnail image by resizing each clipped image (S153e). The generated cutout image data and thumbnail image data are stored in the RAM 150 as a work area.

  When the generation of the thumbnail image data is completed, the digital camera 100 transmits a transfer preparation OK notification to the PC 500 (S154). In response, the PC 500 transmits a still image data acquisition request (an example of a third request) to the digital camera 100 (S155a). In response to the still image data acquisition request, the digital camera 100 transmits thumbnail image data of all frames to the PC 500 (S156a).

  When receiving the thumbnail image data from the digital camera 100, the PC 500 stores them in the data storage unit 517 (S164a).

  The above processing (S145, S153d, S153e, S154, S155a, S156a, S164a) is performed for each frame. That is, a thumbnail image is generated for each frame, transferred to the PC 500, and stored. When the saving of the thumbnail images for all the frames is completed, the PC 500 displays an input screen 609 (FIG. 20) for designating a clipping range on the display unit 513 (S164b). On the input screen 609, thumbnail images are arranged.

  On the input screen 609, when the user specifies a clipping range using a thumbnail image and presses the image transfer button 628, a confirmation screen 606 as shown in FIG. 14 is further displayed. At this time, values calculated based on information specified by the user on the input screen 609 shown in FIG. 20 are set in the input area 606a and the input area 606b on the confirmation screen 606. By referring to the confirmation screen 606, the user can confirm the cutout range set by the user using the thumbnail image.

  Thereafter, when the user presses the cutout start button 606c on the confirmation screen 606, the PC 500 transmits a cutout start request to the digital camera 100 (S145b). This cutout start request includes information indicating the cutout type, the designated start frame number, and the number of transfer frames. In the present embodiment, “partial cutout” is designated as the cutout type. Thereafter, the process shown in FIG. 23 is executed.

  That is, when receiving the cutout start request, the digital camera 100 recognizes that it is a partial cutout process, and first sets the received start frame number in the pointer N (S151d). Further, the digital camera 100 reads out and obtains clipped image data corresponding to the Nth frame from the RAM 150 (S153b), and transfers it to the PC 500 (S156). Thereafter, the digital camera 100 acquires clipped image data for the number of frames designated by the user (S160b, S161) while sequentially moving the pointer N, and transfers it to the PC 500 (S153b, S156).

  During the transfer of the cutout image data, a screen 633 for notifying the user that the cutout image data is being transferred is displayed on the display unit 513 of the PC 500 as shown in FIG. When the cancel button 635 is pressed on this screen 633 (YES in S165), the transfer of the image data is stopped (S168, S157, S158).

  Since the processing other than the above shown in FIG. 23 is the same as that described in the first embodiment, description thereof is omitted here.

  With the above configuration, the user can specify a cut-out section while referring to a thumbnail image. For this reason, it is possible to easily specify the section while confirming the content of the image, and it is possible to improve the convenience for the user.

(Embodiment 5)
In the first to fourth embodiments, a configuration has been described in which 4K photo is continuously cut out and transferred to the PC 500 after completion of image capturing in the 4K photo mode. The transfer of the cut-out image does not need to be performed following the image shooting in the 4K photo mode. The clipped image may be transferred at a timing independent of the timing of image shooting. In the present embodiment, a configuration for generating a cut-out image from an already recorded 4K photo moving image at an arbitrary timing and transferring it to the PC 500 will be described. FIG. 25 is a sequence diagram for explaining the operation of the imaging system 10 of the present embodiment.

  The PC 500 transmits a 4K moving image file information acquisition request to the digital camera 100 (S201). In response to this request, the digital camera 100 transmits 4K moving image file information to the PC 500 (S202). The 4K moving image file information includes information related to the 4K moving image file recorded on the memory card 160 of the digital camera 100. Specifically, the 4K moving image file information includes the following information regarding the 4K moving image file recorded on the memory card 160.

-Number of 4K moving image files recorded on the memory card 160-Handle information for specifying a 4K moving image file-Thumbnail image of the first frame of each 4K moving image file-Frame number, marker number, marker information of each 4K moving image file When the PC 500 receives the 4K moving image file information from the digital camera 100, the PC 500 displays a selection screen for the user to select a 4K moving image file for which a clipped image is to be generated (S203). FIG. 26 shows an example of this selection screen. The selection screen 611 in FIG. 26 indicates that six 4K moving image files are recorded on the memory card 160 of the digital camera 100. Further, the selection screen 611 shown in FIG. 26 indicates that the 4K moving image file “CC” is selected by the user and the number of frames of the 4K moving image file “CC” is 140.

  When the user selects a desired 4K moving image file on the selection screen 611 as shown in FIG. 26, the PC 500 transmits a cutout start request to the digital camera 100 (S204). The cutout start request includes a cutout type (thumbnail acquisition), a start frame number (the number of the first frame), the number of transfer frames (the total number of frames), handle information for specifying the 4K video file selected by the user, Is included.

  Upon receiving the cutout start request (S204), the digital camera 100 recognizes that it is a thumbnail acquisition process, cuts out all frame images from the 4K photo moving image data, and generates cutout image data (S205). Next, the digital camera 100 generates a thumbnail image by resizing each clipped image (S206). The generated cutout image data and thumbnail image data are stored in the RAM 150 as a work area.

  When the generation of the thumbnail image data is completed, the digital camera 100 transmits a transfer preparation OK notification to the PC 500 (S207). In response to this, the PC 500 transmits a still image data acquisition request to the digital camera 100 (S208). In response to the still image data acquisition request, the digital camera 100 transmits thumbnail image data of all frames to the PC 500 (S209).

  When receiving the thumbnail image data from the digital camera 100, the PC 500 stores them in the data storage unit 517 (S210). Further, the PC 500 causes the display unit 513 to display a screen 609 (see FIG. 20) for specifying a cutout range including each thumbnail image (S211).

  On the screen 609, when the user designates a cutout section using a thumbnail image, the PC 500 transmits a cutout start request to the digital camera 100 (S212). This cutout start request includes information indicating the cutout type (partial cutout), the designated start frame number, and the number of transfer frames. Thereafter, processing similar to the processing shown in FIG. 23 is executed, and the cut-out image is transferred to the PC 500.

  By the method as described above, a cut-out image can be generated from a 4K photo moving image recorded in the digital camera 100 at an arbitrary timing and transferred to the PC 500.

(Other embodiments)
As described above, Embodiments 1 to 5 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed. Moreover, it is also possible to combine each component of the imaging system 10 demonstrated in the said Embodiments 1-5, and it can also be set as a new embodiment.

  In the above embodiment, PTP is used as an example of a communication protocol between the imaging apparatus and an external electronic device, but other communication protocols may be used. Further, a USB communication standard may be adopted as a communication standard between the imaging apparatus and an external electronic device.

  In the embodiment described above, an interchangeable lens type digital camera has been described as the digital camera. However, the digital camera may be one in which a lens and a body are integrated.

  Moreover, although the digital camera or the camera body has been described as the imaging device of the present disclosure, the imaging device of the present disclosure may be another electronic device. For example, the imaging apparatus of the present disclosure may be an apparatus that can capture an image, such as a video camera, a smartphone, or a tablet terminal. Moreover, although PC was demonstrated as an external electronic device of this indication, an external electronic device is not limited to this. For example, the electronic device of the present disclosure may be another electronic device such as a smartphone or a tablet terminal.

  As described above, the embodiments have been described as examples of the technology in the present disclosure. For this purpose, the accompanying drawings and detailed description are provided.

  Accordingly, among the components described in the accompanying drawings and the detailed description, not only the components essential for solving the problem, but also the components not essential for solving the problem in order to illustrate the above technique. May also be included. Therefore, it should not be immediately recognized that these non-essential components are essential as those non-essential components are described in the accompanying drawings or the detailed description.

  Moreover, since the above-mentioned embodiment is for demonstrating the technique in this indication, a various change, replacement, addition, abbreviation, etc. can be performed in a claim or its equivalent range.

  The idea of the present disclosure can be applied to an imaging device capable of generating moving image data for extracting still image data and an electronic device that remotely controls the imaging device.

10 imaging system 100 digital camera (imaging device)
DESCRIPTION OF SYMBOLS 102 Camera body 120 Digital image / audio processing part 130 Controller 143 CCD image sensor 160 Memory card 165 Card slot 180 Operation part 190 Display part 195 Communication part 301 Interchangeable lens 400 USB cable 500 Personal computer (PC)
511 Controller 513 Display unit 517 Data storage unit 518 Communication unit 622 Movie button 626 Still image button

Claims (12)

An imaging device configured to be remotely controlled from an external electronic device,
A communication unit for communicating with the electronic device;
An imaging unit that captures a subject and generates moving image data for extracting still image data;
A recording unit for recording the moving image data generated by the imaging unit on a recording medium;
A control unit for controlling the operation of the imaging device,
The controller is
When receiving a first request from the electronic device, according to the first request, execute processing to generate the moving image data,
When receiving a second request from the electronic device, processing is performed so as to generate the still image data by cutting out at least one frame from the moving image data recorded on the recording medium in accordance with the second request. Run
Transferring the generated still image data to the electronic device;
Imaging device. When the control unit receives the second request, the control unit cuts out all the frames constituting the moving image data, and generates the still image data from the cut out frames. And causing the generated still image data to be transferred to the electronic device.
The imaging device according to claim 1. When the control unit receives the second request, the control unit cuts out the at least one frame included in the range specified by the second request from the moving image data, and also extracts the frame from the cut out frame. Processing is performed so as to generate still image data, and the generated still image data is transferred to the electronic device.
The imaging device according to claim 1. When the control unit receives a third request from the electronic device, the control unit executes a process so as to generate thumbnail image data corresponding to at least one frame constituting the moving image data from the moving image data, Transferring the generated thumbnail image data to the electronic device;
The imaging device according to claim 1. The communication unit performs communication according to an image transfer protocol (PTP: Picture Transfer Protocol) with the electronic device.
The imaging device according to claim 1. The communication unit is electrically connected to the electronic device via a USB (Universal Serial Bus) cable.
The imaging device according to claim 1. An electronic device that performs remote control on an imaging device that generates moving image data for cutting out still image data,
A communication unit for communicating with the imaging device;
A recording medium for holding the still image data generated from the moving image data in the imaging device;
An operation unit for a user to input an instruction for the remote control;
A control unit for controlling the operation of the electronic device,
The controller is
In accordance with an instruction to start shooting input by the operation unit, the communication unit transmits a first request to instruct generation of the moving image data to the imaging device,
A second request for instructing to cut out at least one frame from the moving image data and generate the still image data when receiving a notification indicating completion of the generation of the moving image data from the imaging device; Let the communication unit transmit to the imaging device,
When the still image data is received from the imaging device, the received still image data is recorded on the recording medium.
Electronics. The second request includes information indicating a range of the at least one frame cut out from the moving image data.
The electronic device according to claim 7. The operation unit includes an input screen for accepting designation of the range.
The electronic device according to claim 8. The input screen includes an area that accepts designation of the position of a frame from which to start clipping and the number of frames to be clipped,
The electronic device according to claim 9.   The electronic device according to claim 9, wherein the input screen receives the designation of the range using a thumbnail image corresponding to at least one frame constituting the moving image data. An image data transfer method for an imaging device that is remotely controlled from an external electronic device,
When receiving a first request from the electronic device, in accordance with the first request, shooting a moving image to generate moving image data,
When receiving the second request from the electronic device, in accordance with the second request, generate at least one frame from the generated moving image data to generate still image data,
A method of transferring image data, wherein the generated still image data is transferred to the electronic device.