JP2013191258A - Imaging device and control method thereof, program, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record a large capacity of content in a built-in recording medium by taking communication capability into consideration.SOLUTION: An imaging device has a first recording medium built in the device, connection means with a second recording medium having capacity smaller than the first recording medium does detachable therefrom, determination means for determining whether the second recording medium connected to the connection means has a communication function, recording means for dividing data to be recorded in the first recording medium into units of a data size transmittable by the communication function of the second recording medium to record the data in the case that the second recording medium has a communication function, and control means for transferring each data unit divided and recorded by the recording means at a time from the first recording medium to the second recording medium.

Description

  The present invention relates to an imaging apparatus in which a recording medium with a communication function is detachable.

  In recent years, a memory card with a wireless LAN function in which a nonvolatile semiconductor memory chip and a wireless LAN module are built in a housing of a general-purpose flash memory card is known. This is handled in the same way as a general flash memory card on the imaging device side, but when an image file of a predetermined format is recorded, a wireless LAN is sent to a destination server set in advance by control on the memory card side. Can be sent automatically through. The memory card with the wireless LAN function may transmit a moving image file in MPEG format (.MPG), Windows (registered trademark) Media format (.WMV), AVI format (.AVI), QuickTime format (.MOV), or the like. it can.

  On the other hand, a video camera for high-definition image quality recording has a maximum recording bit rate of 24 Mbps, and when recording on a general 4 to 8 GB memory card, recording is possible only for about 30 minutes to 1 hour. For this reason, in recent video cameras, in addition to a removable memory card slot, a 32 GB flash memory and a 120 GB HDD (hard disk drive) are separately provided as built-in recording media, thereby realizing long-time recording. Has been released.

  In such a video camera, there are the following two methods for transmitting moving image content to the server using the above-described memory card with a wireless LAN function. The first is a method in which the recording destination setting of the video camera is set to a memory card slot, and an image file is directly recorded and transmitted to a memory card with a wireless LAN function. Second, the image file recorded on the above-described built-in recording medium is copied to a memory card with a wireless LAN function using the inter-recording medium file copy function of the video camera, and the copied image file is transmitted. Is the method.

  However, since a memory card with a wireless LAN function has a small capacity of about 2 to 4 GB, as described above, when a memory card slot is selected as a recording destination of an image file, only a short recording of about 15 to 30 minutes can be performed. Absent. In addition, when an internal recording medium is selected as the recording destination of the image file, continuous recording for a long time is possible, but an image file having a data size exceeding the capacity of the memory card with the wireless LAN function cannot be copied. Cannot be sent.

  As a similar problem, when video content that has been recorded for a long time on a built-in recording medium is ultimately stored on a DVD, the data size of the video content exceeds the capacity of the DVD, and dubbing cannot be performed. There is. In order to solve this problem, Patent Document 1 describes that a virtual disk is created in advance in an internal recording medium and recorded on the virtual disk.

JP 2006-331577 A

  However, Patent Document 1 is based on the premise that the dubbing destination disk is always an unused disk. Therefore, special circumstances of communication are considered, such as when data is already recorded on the dubbing destination recording medium and the available capacity is reduced, or when the data size that can be transmitted is limited by the specifications of the destination server. Absent.

  The present invention has been made in view of the above problems, and an object thereof is to record a large volume of content on a built-in recording medium in consideration of communication capacity.

  In order to solve the above problems and achieve the object, the present invention solves the above problems and achieves the object, the imaging device of the present invention includes a first recording medium built in the apparatus, A connection unit that can attach and detach a second recording medium having a smaller capacity than the first recording medium, a determination unit that determines whether the second recording medium connected to the connection unit has a communication function, Recording means for recording data to be recorded on the first recording medium by dividing it into data size units that can be transmitted by the communication function of the second recording medium when the second recording medium has a communication function And control means for transferring each data unit divided and recorded by the recording means from the first recording medium to the second recording medium.

  According to the present invention, it is possible to record a large amount of content on a built-in recording medium in consideration of communication capacity.

1 is a block diagram showing a configuration of an imaging apparatus according to an embodiment of the present invention. FIG. 3 is a diagram illustrating functions of the imaging apparatus according to the present embodiment. 6 is a flowchart showing an operation in a shooting mode of the present embodiment. 6 is a flowchart showing an operation in a shooting mode of the present embodiment. 4 is a diagram illustrating a moving image content management file of the imaging apparatus according to the embodiment. FIG. The figure which illustrates the structure of the moving image content file produced | generated by this embodiment. The block diagram which shows the structure of the memory card with a communication function of this embodiment. The flowchart which shows operation | movement of the memory card with a communication function of this embodiment. 6 is a diagram illustrating a UI screen in a copy mode of the imaging apparatus according to the embodiment. FIG. 6 is a flowchart illustrating an operation in a copy mode of the imaging apparatus according to the present embodiment.

  Hereinafter, embodiments for carrying out the present invention will be described in detail. The embodiment described below is an example for realizing the present invention, and should be appropriately modified or changed according to the configuration and various conditions of the apparatus to which the present invention is applied. It is not limited to the embodiment. Moreover, you may comprise combining suitably one part of each embodiment mentioned later.

  [Embodiment 1] An embodiment in which the imaging apparatus of the present invention is applied to a digital video camera for recording content such as a moving image will be described below. Note that the imaging apparatus can be applied to a so-called digital camera whose main function is imaging, a mobile phone with a camera, a tablet terminal with a camera, and the like.

  <Apparatus Configuration> First, the configuration of an imaging apparatus according to an embodiment of the present invention will be described with reference to FIG.

  In FIG. 1, the photographing lens 101 captures a subject and forms an image on the imaging surface of the image sensor 103. The diaphragm 102 limits the amount of light of the subject image incident from the photographing lens 101 to a predetermined amount. The imaging element 103 converts the subject imaged by the photographing lens 101 into an electrical signal by a photoelectric conversion element that constitutes a CMOS image sensor or the like, and outputs the electrical signal to the CDS / AGC circuit 104. The CDS / AGC circuit 104 samples and holds the image signal generated by the image sensor 103 to obtain an appropriate signal level. The digital signal processing circuit 105 converts the analog image signal from the CDS / AGC circuit 104 into a digital signal and performs digital signal processing.

  The frame memory 106 stores the raw data from the digital signal processing circuit 105 for each frame. The pixel number conversion circuit 107 converts the number of pixels in the frame memory 106 into a preset number of pixels for recording by the MPEG method described later.

  The image data bus 108 is a transmission path for image data between blocks. The liquid crystal panel 109 displays playback image data from an MPEG codec 112 (to be described later) in the playback mode and an image captured by the image sensor 103 in the shooting mode, and is driven by the liquid crystal driver 110.

  The stream buffer 111 temporarily stores and holds MPEG encoded data from the later-described MPEG codec 112 before being recorded in the later-described built-in flash memory 116 or flash memory card 118. The stream buffer 111 absorbs the difference between the bit rate of the encoded data output from the MPEG codec 112 and the recording bit rate of the built-in flash memory 116 or the flash memory card 118. The MPEG codec 112 compresses and encodes a digital signal from the image data bus 108 by the MPEG method and expands MPEG compressed data recorded in the built-in flash memory 116 or the flash memory card 118.

  The USB terminal 113 outputs image data from the image data bus 108 by the USB controller 114. The USB controller 114 outputs MPEG image data recorded in the built-in flash memory 116 or the flash memory card 118 to the outside from the USB terminal 113. An ATA (AT Attachment) driver 115 is a driver conforming to the interface specification for controlling writing / reading of the built-in flash memory 116.

  A built-in flash memory (hereinafter, built-in memory) 116 records MPEG compressed data from the image data bus 108 as a first recording medium. The memory card driver / slot 117 includes a driver that controls writing / reading to / from a flash memory card (hereinafter, memory card) 118 and a memory card slot that holds the memory card 118. A card detection switch (SW) 117 a is provided in the memory card slot 117 and detects the presence or absence of the memory card 118.

  The memory card 118 is detachable from the apparatus main body by a memory card driver / slot 117, and records MPEG compressed data from the image data bus 108 as a second recording medium. As the memory card 118, a memory card with a wireless LAN function (hereinafter referred to as a memory card with a communication function) incorporating a wireless LAN module 118a can be used. The memory card with a communication function includes a controller and a flash memory, and an image file recorded in the flash memory can be transmitted to an external device such as a server under the control of the controller.

  The operation key 119 is an operation means for the user to operate the apparatus main body. The operation keys 119 are not limited to physical buttons, and a touch panel or the like can be used. The RAM 120 is a volatile memory in which the CPU 121 holds temporary data. The CPU 121 controls the overall operation of the apparatus and executes various functions in response to input operations using the operation keys 119. The EEPROM 122 is a non-volatile memory that stores data that needs to be retained even during a predetermined state of the CPU 121 and when the power is turned off. The control data bus 123 is a transmission path for control signals from the CPU 121, input signals from the operation keys 119, and file number information described later.

  <Description of Functions> With reference to FIG. 2, the appearance and functions of the image pickup apparatus of this embodiment will be described.

  In FIG. 2, the apparatus main body 200 is provided with a shooting trigger switch 201 and a recording destination changeover switch 202. The shooting trigger switch 201 is included in the operation key 119 and is used by the user to start or end moving image shooting. The recording destination changeover switch 202 is included in the operation key 119, and is used for the user to switch the recording destination of the moving image data to the built-in memory 116 or the memory card 118 at the time of moving image shooting. The built-in memory 116 is mounted inside the apparatus and is not shown in the drawing. When the recording destination changeover switch 202 is set to the “built-in memory” side, the moving image data recording destination is set to the built-in memory 116, and when set to the “card slot” side, the memory card 118 is set.

  <Description of Operation> The operation of the image pickup apparatus of this embodiment will be described with reference to FIGS. 3A and 3B. This process is realized by the CPU 121 developing and executing a program stored in the ROM 122 or the built-in memory 116 in the work area of the RAM 120.

  3A, when the power is turned on, the CPU 121 detects the setting of the recording destination changeover switch 202 (S301), and if it is set in the built-in memory 116, the process proceeds to S302 and is set in the memory card 118. In the case, the process proceeds to S327 in FIG. 3B.

  In S302, the CPU 121 mounts the built-in memory 116 and can be used as a moving image recording drive.

  In step S <b> 303, the CPU 121 determines whether a reproducible moving image file is recorded in the built-in memory 116. If it is recorded, the maximum number of clip numbers already recorded is acquired and set as a value of N (S305), and if not recorded, the value of N is set to 0 (S304). .

  In S306, the CPU 121 increments the value of N by one and sets it as the clip number for the next moving image shooting.

  In S307, the CPU 121 determines whether the memory card 118 is inserted in the memory card slot 117 by the card detection switch 118a. When the memory card 118 is attached, the CPU 121 determines whether the attached memory card 118 is a memory card with a communication function (S308). If it is determined that the communication function is provided, the CPU 121 performs drive mounting of the memory card 118 (S309), and acquires the total capacity of the memory card 118 (S310).

  Note that when the moving image file reaches a predetermined capacity during moving image shooting, the imaging apparatus of the present embodiment temporarily closes this moving image file, newly creates another file, and records subsequent moving image data. Has the ability to continue. This function is called “file break”. The predetermined capacity can be set by a parameter “FB”. In this embodiment, if the value is not FB = 0, a file break is performed with the capacity of that value, and if FB = 0, the capacity of the moving image file is set. Regardless of file break is configured.

  In S312, the CPU 121 sets a value obtained by multiplying the total capacity of the memory card 118 acquired in S310 by 0.9 as FB. By this processing, a file break is made within a range not exceeding the capacity of the memory card 118. For this reason, it is guaranteed that the created file has a data size that can be recorded on the memory card 118. The reason for multiplying by 0.9 is as follows. In other words, the division position of the moving image file is limited to the boundary of the GOP (Group Of Pictures) in the MPEG format, and it is assumed that the position of the boundary exceeds the target file capacity, This is to ensure a margin. If the memory card 118 is not attached in S307 or if the memory card 118 attached in S308 is not equipped with a communication function, FB = 0 is set in S311.

  In S313, the recording start operation is awaited by the user, and when the recording start operation is performed, the CPU 121 starts storing the MPEG encoded data obtained by encoding the captured moving image data with the MPEG codec 112 in the stream buffer 111. (S314).

  In S315, the value of “M” is set to 1, and in S316, the file name “¥ VIDEO ¥ CLIP (N 4-digit notation) ¥ (N 4-digit notation) _ (M 3-digit notation) .MPG” In step S317, writing of the moving image stream to the moving image file is started.

  While the recording stop operation is not detected in S318, the CPU 121 determines the value of FB (S322), and in the case of 0, the process returns to S317, and the writing of the moving image stream to the moving image file is continued. If a value other than 0 is set in S322, the CPU 121 detects the file size FS of the moving image file (S323). If FS is greater than or equal to FB, the CPU 121 closes the moving image file (S325).

  In S326, the CPU 121 increments the value of “M” by one, and then returns to S316, where “¥ VIDEO ¥ CLIP (N 4-digit notation) ¥ (N 4-digit notation) _ (M 3-digit notation). A new movie file is created with the file name “MPG”. In step S317, the writing of the moving image stream to the moving image file is started.

  If a recording stop operation is detected in S318, the CPU 121 stops storing the MPEG encoded data obtained by encoding the captured moving image data with the MPEG codec 112 in the stream buffer 111 (S319), and closes the moving image file. (S320).

  In S321, the CPU 121 describes “\ VIDEO \ CLIP (N four-digit notation) ¥ (N four-digit notation) .INF” in which a list of moving image files recorded in one clip from the start to the stop of recording is described. A management file is created with the file name as described above, and the process returns to S306.

  Subsequently, in FIG. 3B, when the recording destination changeover switch 202 is set to “card slot” in S301, the CPU 121 mounts the memory card 118 and can be used as a recording drive (S327).

  In S328, the CPU 121 determines whether a reproducible moving image file is recorded on the memory card 118. If it is recorded, the maximum value of the clip number already recorded is acquired and set as the value of N (S329). If not recorded, the value of N is set to 0 (S330). .

  In S331, the CPU 121 increments the value of N by one and sets it as the clip number for the next moving image shooting.

  In step S <b> 332, the recording start operation is waited for by the user, and when the recording start operation is performed, the CPU 121 starts storing the MPEG encoded data obtained by encoding the captured moving image data with the MPEG codec 112 in the stream buffer 111. (S333).

  In S334, the CPU 121 creates a moving image file with the file name “¥ VIDEO ¥ CLIP (N four-digit notation) ¥ (N four-digit notation) _001.MPG” and starts writing the moving image stream to the moving image file (S334). S335).

  While the recording stop operation is not detected in S336, the writing of the moving image stream to the moving image file is continued. If a recording stop operation is detected in S336, the CPU 121 stops storing the MPEG encoded data obtained by encoding the captured moving image data with the MPEG codec 112 in the stream buffer 111 (S337), and closes the moving image file. (S338). Then, a file name “¥ VIDEO ¥ CLIP (N four-digit notation) ¥ (N four-digit notation) .INF” describing a list of moving image files recorded in one clip from the start to the stop of recording is described. A management file is created, and the process returns to S331.

  Here, referring to FIG. 4 and FIG. 5, a memory card 118 with a communication function having a capacity of 2 GB is mounted, the recording destination changeover switch 202 is set to “built-in memory”, and the recording bit rate of the moving image is set to 15 Mbps. The operation when set is described.

  FIG. 5 exemplifies a file structure of recorded content recorded in the internal memory 116 by the following operation.

  When the power of the apparatus is turned on, it is determined in S301 that the setting of the recording destination changeover switch 202 is “built-in memory”, so that the built-in memory 116 is drive-mounted in S302 and recording is possible.

  Since a reproducible moving image file is not recorded in S303, the clip number is set to N = 0 in S304, and N is incremented by 1 and becomes N = 1 in S306.

  In S307, the memory card 118 is inserted into the memory card slot 117, and in S308, it is determined that the communication function is provided. Further, in S309, the memory card 118 is drive-mounted, and in S310, it is detected that the capacity of the memory card is 2 GB.

  In S312, the file division size FB = 2 × 0.9 = 1.8 GB is set.

  When the user performs a recording start operation in S313, accumulation of MPEG encoded data obtained by encoding the moving image data captured in S314 with the MPEG codec 112 in the stream buffer 111 is started.

  In S315, the value of “M” is set to 1.

  In S316, the moving image file 504 is created with the file name “¥ VIDEO ¥ CLIP0001 ¥ 0001_001.MPG” in the clip 503 of CLIP0001 immediately below the VIDEO 502 in the root directory 501.

  In S317, the writing of the moving image stream to the moving image file is started, and it is determined whether or not the value of the moving image file capacity FS detected in S323 exceeds the FB of 1.9 GB while the shooting of the moving image is continued. (S324). In this embodiment, since the moving image recording bit rate is set to 15 Mbps, the moving image file capacity FS reaches 1.9 GB 18 minutes and 08 seconds after the start of recording. Then, the moving image file 504 created in S316 is closed (S325), and M = 2 is set in S326.

  Thereafter, the process returns to S316, and a moving image file 505 is newly created with the file name “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 002.MPG”, and writing of the moving image stream to this moving image file is started. It should be noted that the moving image data is buffered from the time when the file 504 of “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 001.MPG” is closed until the writing of the moving image stream to the file 505 of “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 002.MPG” is resumed. The data is not lost.

  Similarly, when the capacity FS of the file 505 of “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 002.MPG” reaches 1.9 GB, the moving image file 505 created in S316 is closed (S325), and M = 3 in S326. .

  Thereafter, the process returns to S316, a new moving image file 506 is created with a file name of “¥ VIDEO ¥ CLIP0001 ¥ 0001_003.MPG”, and writing of a moving image stream to this moving image file is started. When the user performs a recording stop operation, the MPEG codec 112 stops operating in S319, and the accumulation of moving image data in the stream buffer 111 is stopped. Thereafter, the moving image file 506 created in S316 is closed (S320), and a management file 507 is created with a file name of “¥ VIDEO ¥ CLIP0001 ¥ 0001.INF” in S321.

  FIG. 4 illustrates the contents of the management file. One clip “CLIP0001” is composed of three files “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 001.MPG”, “¥ VIDEO ¥ CLIP0001 ¥ 0001 —002.MPG”, and “¥ VIDEO ¥ CLIP0001 ¥ 0001_003.MPG”. With this management file, it is possible to display one thumbnail per clip on the index screen in the playback mode, and the user can perform the playback operation of this clip without being aware that the file constituting the clip is divided. be able to.

  Thereafter, the process returns to S306, N is incremented to N = 2, and S307 to S317 are repeatedly executed, and writing of the video stream to the file 508 with the file name “¥ VIDEO ¥ CLIP0002 ¥ 0002 — 001.MPG” is started. Is done.

  Thereafter, when the video file capacity FS reaches FB in steps S322 to S324 while the movie is being shot, the file 508 is closed in step S325, and M = 2 is set in step S326. Thereafter, the process returns to S316, a new moving image file 509 is created with the file name “¥ VIDEO ¥ CLIP0002 ¥ 0002 — 002.MPG”, and writing of the moving image stream to this moving image file is started.

  When the user performs a recording stop operation, the storage of the moving image data is stopped in S319 to S321, the moving image file 509 is closed, and the management file 510 with the file name “¥ VIDEO ¥ CLIP0002 ¥ 0002.INF” is created. Created.

  3B is the same as S302 to S306, S313 to S314, and S316 to S321 in FIG. 3A.

  <Configuration of Memory Card with Communication Function> Here, details of the memory card with communication function will be described. FIG. 6 shows an example of the configuration of a memory card with a communication function.

  In FIG. 6, an input / output terminal 601 exchanges data between the device and the memory card 118 via the input / output terminal of the memory card slot 117. The controller 602 controls a NAND flash memory 603 and a wireless LAN transmission / reception unit 604 described later. A NAND flash memory 603 is a data storage location, 604 is a wireless LAN transmission / reception unit that transmits / receives data by wireless LAN, and 605 is a transmission / reception antenna connected to the wireless LAN transmission / reception unit 604. Each of these elements is housed in the same housing as a general-purpose flash memory card. Note that the memory card 118 of the present embodiment is formatted in the FAT32 format.

  <Description of Operation of Memory Card> The operation of the memory card with the communication function will be described with reference to FIG.

  This process is realized by the controller 602 expanding and executing a program stored in a ROM (not shown) in the RAM work area.

  In FIG. 7, the operation starts when the device is attached to the apparatus. In step S701, the controller 602 monitors whether there is a write in the FAT file entry area in which file information is stored.

  In step S702, the controller 602 determines whether a new file entry has been written (file size = 0) in a predetermined folder. If there is a write, the controller 602 determines whether the extension of the file name of the registered file entry is an extension name indicating a file format that can be transmitted by the wireless LAN transmission / reception unit 604 (S703). If it is not the extension name of the file format that can be transmitted, the process returns to S702 to continue monitoring the file entry, and if it is the extension name of the file format that can be transmitted, the process proceeds to S704.

  In step S703, the controller 602 waits until the file of the registered file entry is written (the file size is updated and a numerical value other than 0 is recorded in the file size). When the file writing is completed, the wireless LAN transmission / reception unit 604 transmits the file (S705).

  <File Transmission Function> With reference to FIGS. 8 and 9, the operation of transmitting a moving image file by the imaging apparatus of this embodiment will be described.

  In FIG. 8, reference numeral 801 denotes a UI screen for copying a moving image file from the built-in memory 116 to the memory card 118 to transmit a moving image, and reference numerals 802 and 803 denote thumbnails corresponding to the two clips shown in FIG. . A copy start button 804 is used by the user to instruct the start of transmission of a moving image file.

  FIG. 9 is a flowchart illustrating the operation in the copy mode in the imaging apparatus according to the present embodiment. This process is realized by the CPU 121 developing and executing a program stored in the ROM 122 or the built-in memory 116 in the work area of the RAM 120.

  In FIG. 9, when the process is started, in S901, the CPU 121 determines whether the memory card inserted in the memory card slot 117 has a communication function. If the communication function is provided, the screen 801 shown in FIG. 8 is put into a standby state for a copy start operation by the user (S902).

  Here, it is assumed that the user selects a thumbnail 802 and operates the copy start button 804 on the screen 801 shown in FIG. In step S903, the CPU 121 reads the management file 507 having the file name “¥ VIDEO ¥ CLIP0001 ¥ 0001.INF” illustrated in FIG. 5 and acquires the number and file names of the MPG files constituting the clip 0001.

  In step S <b> 904, the CPU 121 starts transferring the selected file and copies “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 001.MPG” to the memory card 118. When the file transfer ends, the memory card side executes the operation of FIG. 7 and transmits the file “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 001.MPG” to the file server by the wireless LAN transmission / reception unit 604.

  If the CPU 121 determines in S905 that the transmission has been completed, it deletes the transmitted file “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 001.MPG” from the memory card 118 (S906).

  In step S907, the CPU 121 determines whether transmission of the last “¥ VIDEO ¥ CLIP0001 ¥ 0001_003.MPG” file of the clip has been completed. Since it has not been transmitted at this time, the process returns to S904, and similarly the file “¥ VIDEO ¥ CLIP0001 ¥ 0001 — 002.MPG” is transmitted (S905 to S907). Similarly, when the file “¥ VIDEO ¥ CLIP0001 ¥ 0001_003.MPG” is transmitted, and the last file “¥ VIDEO ¥ CLIP0001 ¥ 0001_003.MPG” of the clip is transmitted in S907, the processing ends. If the installed memory card does not have a communication function in S901, the processing of S908 to S911 is omitted from the processing of S903 to S907, waiting for the transmission to be completed in S905, and the deletion of the transmitted file in S906. Process.

  As described above, according to the present embodiment, since the moving image file is divided and recorded with the data size calculated from the total capacity of the memory card with the communication function, the moving image content is recorded for a long time. Also, it can be reliably transmitted by the wireless LAN in divided data units.

  In the present embodiment, the value of FB, which is a data unit for performing a file break, is calculated from the total capacity of the memory card with communication function, but is calculated from the capacity of the unrecorded area of the memory card with communication function. It is good also as a structure. Thereby, since another file is already recorded on the memory card with the communication function, the moving image content can be transmitted even when the free space is small.

  Further, when the unrecorded area of the memory card with communication function is less than a predetermined amount, the FB value may be calculated from the total capacity of the memory card with communication function. Thereby, since another file has already been recorded, even if the free space is extremely small, it is possible to leave the possibility that the moving image content can be transmitted by deleting the recorded file.

  Further, the FB value may be calculated from the file size specification that can be handled by the wireless LAN transmission / reception unit 604 at a single transmission on the server side that is the file transmission destination. For example, moving image content may be transmitted on a server that provides a so-called moving image sharing service. In this case, the file size that can be uploaded may be limited depending on the specifications on the server side. Therefore, it is also possible to acquire transmission destination information stored in a memory card with a communication function in advance and determine an FB value smaller than the transmittable size.

  Further, the FB value may be calculated from the smallest capacity among the total capacity of the memory card with the communication function, the capacity of the unrecorded area, and the file size specification that can be handled by one transmission on the file server side. This makes it possible to reliably transmit moving image content under any of the above conditions.

  Furthermore, the FB value may be calculated from the size of the transmission packet, which is the minimum data unit when the wireless LAN transmission / reception unit 604 transmits a file. This makes it possible to transmit moving image content under more conditions.

  Further, a configuration may be added in which after all the moving image files constituting one clip are transmitted, the moving image files divided and recorded on the memory card with a communication function are combined. As a result, since one clip can be handled as one file after the moving image content is transmitted, the usability of the user is improved when editing the moving image content again using the moving image editing software of the PC.

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

Claims (9)

A first recording medium built in the apparatus;
Connection means to which a second recording medium having a smaller capacity than the first recording medium can be attached and detached;
Determination means for determining whether the second recording medium connected to the connection means has a communication function;
When the second recording medium has a communication function, the data to be recorded on the first recording medium is divided and recorded in units of data size that can be transmitted by the communication function of the second recording medium. Recording means;
An image pickup apparatus comprising: control means for transferring data units divided and recorded by the recording means from the first recording medium to the second recording medium.   The data size that can be transmitted by the communication function is a size that is limited by a transmission destination of data by the second recording medium, a size that is calculated from a free capacity among the total capacity of the second recording medium, and the The image pickup apparatus according to claim 1, wherein the image pickup apparatus is set to the smallest size among the sizes calculated from the total capacity of the second recording medium.   The data size that can be transmitted by the communication function is a size calculated from the total capacity of the second recording medium when the free capacity of the second recording medium is less than a predetermined amount. The imaging device described in 1.   When the data recorded separately on the first recording medium has been transmitted by the communication function of the second recording medium, the data recorded separately on the first recording medium are combined. The imaging apparatus according to claim 1.   The control means controls the data not to be divided by the recording means when the communication function is off even if the second recording medium has a communication function. The imaging apparatus according to 1. It further has a photographing means for photographing a movie,
When the moving image file reaches a predetermined capacity corresponding to the data unit during shooting of the moving image, the recording unit stops writing the moving image data to the moving image file and creates a new file. 6. The image pickup apparatus according to claim 1, wherein recording of a continuous moving image is continued. A control method for an imaging apparatus, comprising: a first recording medium built in the apparatus; and a connecting means to which a second recording medium having a smaller capacity than the first recording medium can be attached and detached,
A determination step of determining whether the second recording medium connected to the connection means has a communication function;
When the second recording medium has a communication function, the data to be recorded on the first recording medium is divided and recorded in units of data size that can be transmitted by the communication function of the second recording medium. Recording process;
And a control step of transferring each data unit divided and recorded in the recording step from the first recording medium to the second recording medium.   A program that causes a computer to function as each unit of the imaging apparatus according to any one of claims 1 to 6.   A storage medium storing a program that causes a computer to function as each unit of the imaging apparatus according to claim 1.