JP2017005391A - Recording apparatus and recording apparatus control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a user with a time capable of recording on a recording medium more appropriately, when recording video data on a recording medium.SOLUTION: A recorder records a video file including video data on a recording medium, and acquires a first recordable time capable of recording on a recording medium based on an idle capacity recordable on the recording medium, and a second recordable time recordable on the recording medium based on the number of files recordable on the recording medium. Out of the first recordable time and second recordable time, the short recordable time is displayed in a display section, as the recordable time of the video data onto the recording medium.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a recording apparatus and a control method for the recording apparatus, and more particularly to an apparatus for recording moving image data on a recording medium.

  In recent years, moving image data has been improved in image quality and resolution, and the amount of data per frame constituting the moving image data has increased or the number of frames per unit time (fps) has increased. The capacity of moving image data tends to increase dramatically. Further, with the increase in capacity of moving image data, there are large-capacity memories (recording media) such as 256 gigabytes (GB) and 512 GB.

  Moving image data shot by a digital camera or the like is generally recorded in a moving image file format such as MOV or MP4, and these moving image files are recorded on a recording medium by a file system such as FAT32 (File Allocation Table 32 bits). In the file system, there is an upper limit on the manageable file size, and the data capacity per file is limited. For example, a recording medium formatted with FAT32 cannot record more than 4 GB per file.

  Conventionally, when recording recorded video data in memory, the display unit displays how much video data can be recorded in order to prevent sudden recording failure due to lack of recordable memory capacity. There is an image recording apparatus (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-172269

  In order to record moving image data larger than the upper limit value of the file size (4 GB in FAT32) according to the file system of the recording medium, there is a technique of dividing the moving image data into a plurality of files and recording. On the other hand, in the DCF (Design rule for Camera File system) standard used in digital cameras, video cameras, and the like, there is an upper limit on the number of directories that can be recorded on a recording medium and the number of files that can be recorded in each directory. For this reason, even if there is a free space that can be recorded on the recording medium, a file may not be generated due to the upper limit of the number of files, and moving image data may not be recorded.

  The present invention has been made in view of such a background, and an object of the present invention is to more appropriately provide a user with a recordable time when recording moving image data on a recording medium.

  In order to achieve the above object, a recording apparatus according to the present invention can record a moving image file including moving image data on a recording medium, and record on the recording medium based on a free space that can be recorded on the recording medium. Obtaining a first recordable time, obtaining a second recordable time recordable on the recording medium based on the number of files recordable on the recording medium, and obtaining by the obtaining means Control means for controlling the display unit to display a short recordable time out of the first recordable time and the second recordable time as the recordable time of moving image data on the recording medium. It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, when moving image data is recorded on a recording medium, the time which can be recorded on a recording medium can be provided to a user more appropriately.

1 is a block diagram illustrating a configuration of a recording apparatus according to the present invention. It is a flowchart which shows the recording process in the division | segmentation recording mode of moving image data. 3 is a flowchart illustrating a recordable time acquisition process according to the first embodiment. FIG. 11 is a schematic diagram when a recordable time is displayed on the display unit 110. It is a flowchart which shows the recording process in the extended recording mode of moving image data. 10 is a flowchart illustrating a recordable time acquisition process according to the second embodiment.

  Hereinafter, the present invention will be described with reference to the accompanying drawings.

(Embodiment 1)
FIG. 1 is a block diagram illustrating a configuration example of a digital camera 100 as a recording apparatus according to the first embodiment. The imaging unit 101 generates and outputs image data indicating a photographed subject. The imaging unit 101 includes an optical system such as a zoom lens and a focus lens, an image sensor such as a CMOS, an iris, an AD converter that converts a captured image signal into a digital signal, and processing necessary for image data output from the AD converter. Including a processing circuit. When an instruction for recording a still image is output from the control unit 105, the imaging unit 101 generates and outputs still image data for one screen at a timing corresponding to the still image shooting instruction, and stores it in the volatile memory 102. In addition, when an instruction to record a moving image is output from the control unit 105, the imaging unit 101 generates and outputs moving image data in a format according to the set number of pixels, a frame rate, a target bit rate, and the like. Store in the memory 102.

  The volatile memory 102 temporarily stores still image data and moving image data output from the imaging unit 101, still image data and moving image data encoded by the signal processing unit 104, and the file system of the recording medium 108. And various information such as management information are stored. The non-volatile memory 103 includes an execution program to be processed by the control unit 105 and data for generating an additional information image (graphical user interface / GUI) to be displayed on the display unit 110 while being superimposed on still image data or moving image data. Etc. are stored. The additional information is, for example, information such as a set value when recording a still image or a moving image, the number of still images that can be recorded, a recording elapsed time or a recordable time of the moving image, and the like. The signal processing unit 104 performs encoding processing according to a known encoding method such as JPEG or MPEG on the still image data or moving image data output from the imaging unit 101, and compresses the information amount.

  The control unit 105 includes a microcomputer (CPU) and other necessary memory, and controls the operation of each unit of the digital camera 100 in accordance with an instruction from the operation unit 106 according to a program stored in the nonvolatile memory 103. The operation unit 106 includes various switches such as a power switch, a trigger switch for instructing start and stop of moving image shooting, a still image shooting switch, a zoom switch, a playback switch, a menu switch, and the like from a user input via the switch. An instruction is transmitted to the control unit 105. A part of the operation unit 106 may be configured with a touch panel and may be attached to the display unit 110.

  The recording / playback unit 107 reads file system information, management information, and the like from the recording medium 108 and stores them in the volatile memory 102. The file system information includes data indicating the file name, file size, recording address, and the like of the file recorded on the recording medium 108, for example. Still image data, moving image data, audio data, and various information to be recorded on the recording medium 108 are managed according to the file system of the recording medium 108.

  The recording / reproducing unit 107 has a known interface such as ATA (AT Attachment), and in accordance with a control command from the control unit 105, information such as still image data and moving image data stored in the volatile memory 102 is stored in a predetermined unit. Every time, it is recorded on the recording medium 108. The recording / playback unit 107 reads still image data, moving image data, and the like recorded on the recording medium 108 in accordance with an instruction from the control unit 105. The recording medium 108 is a random access recording medium such as a large-capacity hard disk (HDD) or a memory card. The recording medium 108 may be built in the main body of the digital camera 100 or may be configured to be detachable from the digital camera 100 by a mounting / discharging mechanism (not shown).

  The display control unit 109 displays various data such as still image data and moving image data stored in the volatile memory 102 and GUI data stored in the nonvolatile memory 103 on the display unit 110 in accordance with an instruction from the control unit 105. Image processing is performed. The display unit 110 displays still image data, moving image data, GUI, and the like image-processed by the display control unit 109 in accordance with an instruction from the control unit 105. The display unit 110 includes a known display device such as a liquid crystal panel. The internal bus 111 is used to transfer various data and commands between the units of the digital camera 100.

  Next, basic recording processing by the digital camera 100 will be described. The digital camera 100 can record a still image file including still image data and a moving image file including moving image data on the recording medium 108. When a power-on instruction is given by the operation unit 106, the control unit 105 controls each unit to set the digital camera 100 to a recording standby state. In the recording standby state, the imaging unit 101 outputs moving image data, and an image of a subject related to the moving image data from the imaging unit 101 is displayed on the display unit 110.

  The still image data recording process is performed by the control unit 105 controlling each unit in response to the input of a still image data recording instruction from the operation unit 106 in the recording standby state of the digital camera 100. The imaging unit 101 generates and outputs still image data of one screen at a timing corresponding to the input of a still image data recording instruction by the operation unit 106. The output still image data is compressed by the signal processing unit 104 and recorded on the recording medium 108 in a predetermined format (JPEG or the like) as a still image file by the recording / reproducing unit 107.

  Next, the moving image data recording process will be described. In this embodiment, the digital camera 100 records a moving image file including moving image data on the recording medium 108 in response to an instruction to start recording moving images from the operation unit 106, and records moving image data in response to an instruction to stop recording moving images. To stop the recording process. In the present embodiment, moving image data is recorded in two recording modes. When the file size of the moving image file being recorded is larger than a predetermined threshold, the divided recording mode for recording a series of moving image data into a plurality of files and the normal recording for recording the moving image data in one moving image file There is a mode. In the divided recording mode, a new moving image file is generated on the recording medium 108 every time the file size of the moving image file being recorded reaches a predetermined threshold. In the normal recording mode, one moving image file is generated by one recording instruction regardless of the file size of the moving image file being recorded.

  In the present embodiment, the control unit 105 determines whether to record moving image data in the divided recording mode based on the file system of the recording medium 108. Specifically, the control unit 105 analyzes file system information stored in the volatile memory 102 and identifies whether the file system used in the recording medium 108 is exFAT or FAT32. When the file system of the recording medium 108 is exFAT, the control unit 105 determines that recording is not performed in the divided recording mode (recording is performed in the normal recording mode), and when the file system is FAT32, it is determined that recording is performed in the divided recording mode. When recording in the split recording mode, a file size that is smaller by a predetermined amount than the upper limit (4 GB in FAT32) of the file size defined by the file system of the recording medium 108 is set as a threshold for file splitting and stored in the volatile memory 102. The The control unit 105 controls to divide the file and record moving image data when the file size of the moving image file being recorded exceeds the file division threshold.

  FIG. 2 is a flowchart showing a recording process when moving image data is recorded in the divided recording mode. When there is an instruction to start recording a moving image from the operation unit 106 in the recording standby state, the control unit 105 controls each unit to generate a new moving image file on the recording medium 108 and output it from the imaging unit 101 in step S201. Record the video data in the generated video file. At this time, the imaging unit 101 outputs moving image data having the number of pixels and the frame rate set by the user. Further, the signal processing unit 104 compresses the moving image data so that the target bit rate is set in accordance with the set moving image recording format. The recording / reproducing unit 107 records the compressed moving image data on the recording medium 108 for each predetermined unit together with the audio data input from the audio input unit (not shown).

  In step S <b> 202, the control unit 105 determines whether the recording medium 108 has a free capacity capable of recording moving image data. If there is no free space, the control unit 105 stops recording moving image data in step S208. In step S209, the control unit 105 causes the recording / playback unit 107 to form the recorded file in a predetermined format (MOV, MP4, etc.) and record it on the recording medium 108 (file closing process), thereby recording moving image data. The process ends.

  If there is free space (Yes in S202), the control unit 105 determines in step S203 whether a moving image data recording stop instruction has been received. When receiving a recording stop instruction via the operation unit 106 or the like, the control unit 105 performs a process of ending the moving image data recording process in steps S208 and S209 as described above. If the recording stop instruction has not been received, in step S204, the control unit 105 determines whether or not the file size of the currently recorded moving image file has reached the file division threshold value stored in the volatile memory 102.

  When the file size of the moving image file being recorded has not yet reached the file division threshold, the control unit 105 controls to continue the recording processing of the moving image data in step S201. If the file size of the moving image file being recorded has reached the file division threshold, in step S205, the control unit 105 can finish recording the moving image data in the currently recorded file and generate a new next file. to decide. If a new file can be generated, the control unit 105 performs a file closing process on the file that has been recorded (step S206), performs a new file generation process (step S207), and records moving image data in the new file. Continue. When a new file cannot be generated (No in step S205), the control unit 105 performs a process of ending the moving image data recording process in steps S208 and S209 as described above.

  Next, a method for adding file names (file numbers) of moving image files, still image files, and other various files in this embodiment will be described. In this embodiment, these files are generated based on the DCF (Design rule for Camera File system) standard. A directory capable of storing a plurality of files is generated on the recording medium 108, and a directory name including a directory number using numbers from 100 to 999 is added. A file name including a file number using numbers from 0001 to 9999 is added to the file recorded in each directory.

  A new directory created in the recording medium 108 is recorded from the file with the file number 0001. When a new file is generated, the maximum file number among the files already recorded in the directory in which the file is recorded is increased by 1, and a file name including consecutive file numbers is added to the new file. When recording of the file with the file number 9999 is finished in the directory and a new file is generated next, a new directory is created. Then, the maximum directory number among the directories already recorded on the recording medium 108 is incremented by 1, a directory name including a continuous directory number is added to the new directory, and files are recorded in the new directory. .

  For example, when a newly generated file is recorded after the files of file number 0001 to 9999 are recorded in the directory of directory number 100, a new directory of directory number 101 is created. The newly generated file is recorded as a file with the file number 0001 in the directory with the directory number 101.

  As described with reference to FIG. 2 in the present embodiment, when the moving image data is divided and recorded into a plurality of files, the file generated in step S207 in FIG. Is added to the file number.

  In this embodiment, the file number added to the new file is a number obtained by adding 1 to the maximum file number recorded in the directory of the maximum directory number recorded in the recording medium 108 when the file is generated. Is used. For example, if the file with the file number 0100 has already been recorded in the directory with the largest directory number 300 in the recording medium 108, the new file is recorded as the file with the file number 0101 in the directory with the directory number 300. If the file with the file number 9999 has already been recorded in the directory with the largest directory number 300 in the recording medium 108, the new file is recorded as the file with the file number 0001 in the newly created directory with the directory number 301. The

  In this embodiment, when a number smaller than the maximum file number recorded in one directory is not used as a file number for any file in the same directory, a file in which this unused number is newly recorded Do not use for file numbers. For example, if a file is deleted after recording, and the deleted file is not the last file (the file with the highest file number recorded in the folder with the highest folder number), the file number of the deleted file is the file of the new file. Not used for numbers. In this case, a new file cannot be generated on the recording medium in which the file with the maximum file number 9999 is recorded in the directory with the maximum directory number 999, and the file cannot be recorded.

  For example, in step S205 of FIG. 2, when the file number of the currently recorded moving image file is 9999 and is recorded in the directory with the directory number 999, the control unit 105 determines that a new file cannot be generated.

  The file number to be added to the newly generated file is not limited to the above-described determination method. For example, a file number that is not used in each directory may be used to add to the new file. In this case, even if a recording medium in which a file with a file number 9999 is recorded in a directory with a directory number 999 when a new file is recorded, if there is an unused number as a file number in each directory, the unused number is used. A new file can be generated.

  Setting items such as shooting conditions when recording still image data and moving image data may be configured to be set by the user. Setting items for still image data include the number of recorded pixels, white balance, exposure, and the like. Setting items for moving image data include the number of pixels per frame, a frame rate, a target bit rate, a moving image data recording format such as a compression method, and the like. When there are a plurality of setting items, at least one of the plurality of setting items may be arbitrarily set by the user. When these setting items are associated with each other and the user sets one of them In addition, other items may be automatically set. For example, the video data recording format is UHD (3840 x 2160/30 fps), FHD (1920 x 1080/30 fps), SD (640 x 480/30 fps), and the number of frame pixels and the frame rate are selected from three types. It may be configured.

  The control unit 105 stores information indicating setting items for recording still image data and moving image data in the volatile memory 102. When the operation unit 106 instructs to start recording still image data or moving image data, the control unit 105 controls each unit to record still image data or moving image data based on the setting items stored in the volatile memory 102. To start.

  Next, playback processing of still image data and moving image data will be described. When the playback unit is instructed by the operation unit 106, the control unit 105 displays an index screen including a representative image (thumbnail) of a still image file or a moving image file recorded on the recording medium 108 on the display unit 110. The user operates the operation unit 106, selects any one of the representative images of each file displayed on the display unit 110, and instructs reproduction. When reproduction is instructed, the control unit 108 controls the recording / reproducing unit 107 to reproduce a still image file or a moving image file corresponding to the selected representative image. The recording / playback unit 107 reads out a designated still image file or moving image file from the recording medium 108 as needed in accordance with an instruction from the control unit 105 and stores it in the volatile memory 102. The signal processing unit 104 reads and decodes a still image file or a moving image file to be reproduced from the volatile memory 102, and stores the decoded still image data or moving image data in the volatile memory 102 again as reproduced still image data or moving image data. The display unit 110 displays still image data or moving image data reproduced from the volatile memory 102 by the display control unit 109. When the operation unit 106 instructs to stop the reproduction, the control unit 108 stops the reproduction of the still image data or the moving image data, and displays the index screen on the display unit 110 again.

  Next, the acquisition processing of the recordable time of moving image data in the present embodiment will be described. FIG. 3 is a flowchart showing a recordable time acquisition process according to this embodiment. In the present embodiment, the recordable time of the moving image data is acquired based on the free capacity of the recording medium that can record the moving image data or the number of files that can be recorded on the recording medium. In the present embodiment, the processing of FIG. 3 is performed during recording standby of the moving image data or before the start of recording, but may be performed at predetermined intervals during recording of the moving image data.

  In step S <b> 301, the control unit 105 acquires a free space in which the moving image data and still image data can be recorded on the recording medium 108. In step S302, the control unit 105 determines whether the recording medium 108 has a free capacity capable of recording moving image data. If there is no free space (No in step S301), in step S312, the control unit 105 controls the display control unit 109 to display on the display unit 110 that the recording medium 108 has no recordable time for moving image data. Then, this process ends.

  When there is free space (Yes in step S302), in step S303, the control unit 105 acquires the target bit rate of the moving image data from the setting items of the moving image data stored in the volatile memory 102. As the value of the target bit rate of the moving image, a value set in advance by the user as one of the setting items of the moving image data may be used, or the set recording format of the moving image data (the number of pixels per frame, It may be obtained from the frame rate. In this embodiment, the target bit rate is set according to the number of pixels per frame and the frame rate of the moving image data to be recorded. For example, the target bit rate for SD (640 × 480/30 fps) moving image data is 10 Mbps, and the target bit rate for UHD (3840 × 2160/30 fps) moving image data is 500 Mbps.

  In step S304, the control unit 105 acquires the recordable time A of the moving image data on the recording medium 108 based on the free space of the recording medium 108 acquired in step S301 and the target bit rate of the moving image data acquired in step S303. . Here, the recordable time A is obtained by (free space of the recording medium 108) / (target bit rate of moving image data to be recorded). For example, when the free space of the recording medium 108 is 48.4 GB, if the recording format of the moving image data is UHD (3840 × 2160/30 fps) and the target bit rate is 500 Mbps, the recordable time A is 12 minutes 54 seconds.

  Next, in step S <b> 305, based on the file system information of the recording medium 108 stored in the volatile memory 102, the control unit 105 records in the divided recording mode in which the moving image data is recorded while being divided into a plurality of files. Judge whether. When the file system of the recording medium 108 is exFAT, the control unit 105 determines that recording is not performed in the divided recording mode (recording is performed in the normal recording mode), and when the file system is FAT32, recording is performed in the divided recording mode (upper limit value of the file size). 4GB).

  If it is determined in step S305 that recording is not performed in the divided recording mode, the process proceeds to step S311 and the control unit 105 controls the display control unit 109 to display the recordable time A acquired in step S304 on the display unit 110. To do. When the recording format of the moving image data is UHD (3840 × 2160/30 fps) and the recordable time A is 12 minutes 54 seconds, the recordable time is displayed on the display unit 110 as shown in FIG.

  When moving image data is recorded in the divided recording mode (Yes in step S305), in step S306, the control unit 105 stores the upper limit value of the file size for recording in the divided recording mode in the volatile memory 102. Get from the information of. When the file system of the recording medium 108 is FAT32, the upper limit value of the file size is 4 GB.

  Next, in step S307, the control unit 105 acquires the number of files that can be recorded on the recording medium. In the present embodiment, various files such as still image files and moving image files are generated in accordance with the DCF standard. The newly generated file is added with a file name using a file number obtained by adding 1 to the maximum file number recorded in the directory having the maximum directory number recorded on the recording medium 108. Therefore, in the present embodiment, the number of files that can be recorded in the directory having the maximum directory number recorded on the recording medium 108 is from the maximum value 9999 of the file number to the maximum number of files recorded in the directory. The number is subtracted. For example, if the maximum directory number recorded on the recording medium 108 is 900 and a file with the file number 9955 has already been recorded in the directory with the directory number 900, the number of files that can be recorded in the directory with the directory number 900 is 4.

  Further, the number of files that can be recorded in a directory having a directory number that has not yet been created on the recording medium 108 is 9999 for each directory. Therefore, the number of files that can be recorded in a directory having a directory number that has not yet been created on the recording medium 108 is obtained by multiplying the value obtained by subtracting the maximum directory number recorded on the recording medium 108 from the maximum value 999 of the directory number. Value. From the above, the number of files that can be recorded on the recording medium 108 is the number of files that can be recorded in the directory with the maximum directory number recorded on the recording medium 108 and the number of files that can be recorded in the directory with the directory number that has not yet been created. Will be added.

  The method for obtaining the number of files that can be recorded on the recording medium 108 is not limited to the above. For example, when adding a file number that is not used in each directory as the file number of a new file, use the value obtained by adding the number of files that can be recorded in each directory, including directories that have not yet been created. May be.

  In step S308, the control unit 105 acquires the recordable time B of the moving image data in the recording medium 108 based on the number of files that can be recorded in the recording medium 108 acquired in step S307. In the present embodiment, one moving image file at the target bit rate of the set moving image data recording format based on the target bit rate of the moving image data acquired in step S303 and the upper limit value of the file size acquired in step S306. Get the recordable time per hit. Specifically, the recordable time per file is obtained by (upper limit value of file size) / (target bit rate of moving image data to be recorded). For example, when the recording format of moving image data is the aforementioned UHD, the target bit rate is 500 Mbps, and the upper limit value of the file size is 4 GB, the recordable time per file is 1 minute 4 seconds.

  The method for obtaining the recordable time per file is not limited to the above calculation method. For example, the recordable time value per file is stored in the nonvolatile memory 103 or the like in a table or the like for each moving image data recording format (the above-mentioned UHD, FHD, SD, etc.), and the set moving image data recording format Depending on, the value may be read and acquired.

  When the recordable time B is acquired during recording standby or before the start of recording of moving image data, a value obtained by multiplying the recordable time per file by the number of recordable files acquired in step S307 can be recorded. Time B is assumed. For example, when the recording format of moving image data is UHD, the target bit rate is 500 Mbps, and the number of files that can be recorded on the recording medium 108 is 4, the recordable time B is 4 minutes and 16 seconds.

  When the recordable time B is acquired during recording of moving image data, the remaining recordable time of the currently recorded file is added to the value obtained by multiplying the recordable time per file by the number of recordable files. The recorded value is defined as a recordable time B.

  In step S309, the control unit 105 compares the recordable time A acquired in step S304 with the recordable time B acquired in step S308. If the recordable time B is shorter than the recordable time A (Yes in step S309), the control unit 105 controls the display control unit 109 to display the recordable time B on the display unit 110 in step S310. Then, this process ends. When the recording format of the moving image data is UHD and the recordable time B is 4 minutes 16 seconds, the recordable time is displayed on the display unit 110 as shown in FIG. If the recordable time A is shorter than the recordable time B (No in step S309), the control unit 105 causes the display control unit 109 to display the recordable time A on the display unit 110 in step S311. To end the present process.

  For example, consider a case where the free space of the recording medium 108 is 48.4 GB, the number of files that can be recorded is 4, and UHD moving image data is recorded with an upper limit value of the file size of 4 GB. In this case, the recordable time A acquired based on the free space of the recording medium 108 is 12 minutes 54 seconds, and the recordable time B acquired based on the number of recordable files is 4 minutes 16 seconds. That is, moving image data corresponding to a recording time of 12 minutes and 54 seconds can be recorded in the free space of the recording medium 108, but actually, only 4 minutes and 16 seconds can be recorded due to the upper limit of the number of files. In such a case, in this embodiment, the actually recordable 4 minutes 16 seconds can be displayed on the display unit 110 as the recordable time.

  In step S305 of FIG. 3 of the present embodiment as described above, it is determined that the moving image data is not recorded in the divided recording mode when the file system of the recording medium 108 is exFAT. However, the present invention is not limited to this. For example, even if the file system of the recording medium 108 is exFAT, the upper limit value of the file size per file can be set to a predetermined value (4 GB or the like) by the user or the like. In such a case, the control unit 105 determines to record in the divided recording mode in step S305 in FIG. At this time, the upper limit value of the file size set by the user or the like is stored in the volatile memory 102 as a setting item for moving image data, and the control unit 105 reads the file size from the volatile memory 102 in step S306 in FIG. Get the upper limit.

  As described above, in the present embodiment, the recordable time acquired based on the free space of the recording medium capable of recording moving image data and the recordable time acquired based on the number of files recordable on the recording medium. The short recordable time is displayed. With such a configuration, it is possible to provide the user with a more suitable recording time of moving image data on the recording medium.

(Embodiment 2)
In the present embodiment, the digital camera 100 has a configuration in which the upper limit value of the file size per file can be set by the user or the like when the file system of the recording medium 108 is exFAT. The upper limit value of the file size can be set to a value smaller than the upper limit value of the file size defined by the file system of the recording medium 108 and is stored in the volatile memory 102. The upper limit of the file size in exFAT is 16 exbytes (EiB).

  In the first embodiment, whether to record moving image data in the divided recording mode (step S305 in FIG. 3) is determined based on the file system of the recording medium 108. When the file system is exFAT, the moving image data is not recorded in the divided recording mode ( Recording in the normal recording mode). On the other hand, in the present embodiment, even if the file system of the recording medium 108 is exFAT, if the upper limit value of the file size is set to a value smaller than the capacity of the recording medium 108 by the user or the like, the moving image data is divided into the divided recording mode. Record with.

  When the file system is exFAT and the upper limit value of the file size is set by the user or the like, a size smaller than the set upper limit value of the file size by a predetermined amount is set as the file division threshold and stored in the volatile memory 102 Is done. The control unit 105 controls to divide the file and record moving image data when the file size of the moving image file being recorded exceeds the file division threshold.

  Also in the present embodiment, as in the first embodiment, a moving image file, a still image file, and other various files are generated based on the DCF standard. In this configuration, even when the file system is exFAT, if a moving image file is generated so as not to exceed the upper limit value of the set file size, the number of files can be increased even if there is a free space that can be recorded on the recording medium 108. Recording of moving image data may not be possible due to the upper limit.

  Therefore, in the present embodiment, only the final file that can be recorded on the recording medium 108 (the file with the file number 9999 recorded in the directory with the directory number 999) is an extension that records the moving image data exceeding the set upper limit of the file size. Has a recording mode. When moving image data is recorded in the extended recording mode, the upper limit value of the file size of the final file that can be recorded on the recording medium 108 is defined by the file system of the recording medium 108 from the upper limit value of the file size set by the user or the like. It is changed to the upper limit. Specifically, when the file system of the recording medium 108 is exFAT and the upper limit value of the file size is set to 4 GB, the upper limit value of the file size of the final file that can be recorded on the recording medium 108 is changed to 16 EiB (0xFFFFFFFFFFFFFFFF). The

  In the present embodiment, whether or not the extended recording of moving image data is possible is determined based on whether or not the file system of the recording medium 108 is exFAT. When the file system of the recording medium 108 is exFAT, even if the upper limit value of the file size is set to 4 GB or 8 GB by the user or the like, the upper limit value of the file size on the file system is 16 EiB, which is much larger than the recording capacity of the recording medium. Big. For this reason, the last file can extend and record moving image data exceeding the set upper limit of the file size.

  With this configuration, even when the file system of the recording medium 108 is exFAT and the upper limit value of the file size is set, moving image data is recorded using the recordable free space of the recording medium 108 efficiently. can do.

  A recording process performed by the digital camera 100 in the present embodiment will be described with reference to FIG. FIG. 5 is a flowchart showing a recording process for recording moving image data in the extended recording mode when the upper limit value of the file size is set by the user or the like. In FIG. 5, the processing performed from step S201 to step S209 is the same as the processing described in FIG. 2 of the first embodiment.

  As the file division threshold used in step S204, the file division threshold stored in the volatile memory 102 is used. In the present embodiment, the file division threshold when the file system of the recording medium 108 is FAT32 is a size smaller by a predetermined amount than the upper limit value (4 GB) of the file size defined by FAT32 as described in the first embodiment. . In addition, when the file system of the recording medium 108 is exFAT, the file division threshold is smaller by a predetermined amount than the upper limit value of the file size set by the user or the like as described above.

  If it is determined in step S205 that a new file cannot be created when the file currently being recorded in this embodiment is the final file in the final directory, the control unit 105 determines in step S501 whether extended recording of moving image data is possible. Judging. In the present embodiment, the determination in step S501 is made based on whether the file system of the recording medium is exFAT. When the file system of the recording medium 108 is exFAT and extended recording of moving image data is possible, the control unit 105 updates the upper limit value of the file size of the currently recorded file (final file in the final directory) to 16EiB in step S502.

  Then, the control unit 105 returns to step S201 and controls each unit to perform recording in the extended recording mode in which moving image data is continuously recorded in the file currently being recorded. At this time, the control unit 105 may control the display control unit 109 to display information indicating that the moving image data is recorded exceeding the upper limit value of the file size set by the user or the like on the display unit 110. Good.

  When recording moving image data in the extended recording mode, when there is no free space in the recording medium 108 (No in step S202) or a recording stop instruction is received (Yes in step S203), the moving image data is recorded in the above-described steps S208 and S209. The recording process is terminated.

  If the file system of the recording medium 108 is FAT32 or the like and extended recording of moving image data is not possible (No in step S501), the control unit 105 ends the moving image data recording process in steps S208 and S209.

  Hereinafter, as described above in the present embodiment, the upper limit value of the file size can be set by the user or the like, and the recordable time of the moving image data in the digital camera 100 capable of recording the moving image data in the extended recording mode. The acquisition method of will be described.

  FIG. 6 is a flow showing the acquisition processing of the recordable time of the moving image data in the present embodiment. In the present embodiment, the processing of FIG. 6 is performed during recording standby of the moving image data or before the start of recording, but may be performed at predetermined intervals during recording of the moving image data. The processes performed in steps S301 to S304 and steps S307 to S312 are the same as the processes described in FIG. 3 of the first embodiment.

  In step 601, the control unit 105 determines whether to record the moving image data in the divided recording mode based on the file system information of the recording medium 108 stored in the volatile memory 102 and the upper limit value of the file size. The control unit 105 determines that the recording is performed in the divided recording mode when the file system of the recording medium 108 is FAT32 or when the file system is exFAT and the upper limit value of the file size is set by the user or the like. On the other hand, the control unit 105 determines that recording is not performed in the split recording mode (recording is performed in the normal recording mode) when the file system of the recording medium 108 is exFAT and the upper limit value of the file size is not set by the user or the like. .

  If it is determined in step S601 that recording is not performed in the divided recording mode, the process proceeds to step S311 and the control unit 105 controls the display control unit 109 to display the recordable time A acquired in step S304 on the display unit 110.

  When recording in the divided recording mode, in step S603, the control unit 105 determines whether extended recording of moving image data is possible with the final file in the final directory recordable on the recording medium 108. In this embodiment, the determination in step S602 is determined based on whether the file system of the recording medium 108 is exFAT. If the file system of the recording medium 108 is exFAT, even if the upper limit value of the file size is set, the final file can be extendedly recorded with moving image data exceeding the set upper limit value of the file size. to decide. When the file system of the recording medium 108 is FAT32 or the like and is not exFAT, the upper limit value of the file size is determined by the file system. Therefore, even for the final file, the moving image data is recorded in an extended manner exceeding the upper limit value of the file size. Judge that it is not possible.

  When it is determined that extended recording of moving image data is possible, the control unit 105 controls the display control unit 109 to display the recordable time A acquired in step S304 on the display unit 110. This is because moving image data can be recorded in the recordable free space of the recording medium 108 when continuing the extended recording of moving image data to the final file exceeding the set upper limit of the file size. is there.

  If it is determined that extended recording of moving image data is not possible (No in step S602), in step S603, the control unit 105 acquires an upper limit value of the file size when recording moving image data in the divided recording mode. The upper limit value of the file size at the time of divided recording is acquired from the file system information stored in the volatile memory 102 or the upper limit value of the set file size. From the file system information, when the file system of the recording medium 108 is FAT32, the upper limit value of the file size at the time of divided recording is set to 4 GB, and when it is exFAT, the upper limit value of the set file size is set at the time of divided recording. The upper limit value of. And the control part 105 performs the process below step S307.

  In the embodiment described above, whether or not moving image data can be extended and recorded exceeding the upper limit of the file size in the final file is determined based on whether or not the file system of the recording medium 108 is exFAT. For example, when the upper limit value of the file size is set to 2 GB by the user or the like in the FAT 32, only the final file may be extended to the maximum file size value of 4 GB in the FAT 32. In this case, the control unit 105 determines that extended recording is possible in step S602 of FIG.

  Then, the control unit 105 obtains the recordable time C based on the number of files that can be recorded on the recording medium 108 instead of the recordable time A based on the recording capacity of the recording medium 108 (step S311). To do. At this time, the recordable time C is acquired based on the upper limit value of the file size acquired in step S603 (2 GB for the files other than the final file, 4BG for the final file) and the number of files that can be recorded on the recording medium 108 acquired in step S307. Is done. Specifically, the recordable time C is the time when movie data can be recorded in a recordable file other than the last file (upper limit of file size is 2 GB), and the last recordable file (upper limit of file size is 4 GB). Is a value obtained by adding the recordable time.

  As described above, in the embodiment, when the moving image data can be extended and recorded in the final file, the recordable time based on the free capacity of the recording medium and the recordable time based on the number of files recordable on the recording medium , More suitable video data recordable time is displayed. With such a configuration, even when moving image data can be extended and recorded in the final file, it is possible to provide the user with a more suitable recording time of moving image data on a recording medium.

DESCRIPTION OF SYMBOLS 100 Digital camera 101 Image pick-up part 102 Volatile memory 103 Non-volatile memory 104 Signal processing part 105 Control part 106 Operation part 107 Recording / reproducing part 108 Recording medium 109 Display control part 110 Display part 111 Internal bus

Claims (6)

A recording means for recording a moving image file including moving image data on a recording medium;
A first recordable time that can be recorded on the recording medium based on the free space that can be recorded on the recording medium is acquired, and a second that can be recorded on the recording medium based on the number of files that can be recorded on the recording medium. Acquisition means for acquiring the recordable time of
Of the first recordable time and the second recordable time acquired by the acquisition means, a short recordable time is displayed on the display unit as a recordable time of moving image data on the recording medium. And a control means for controlling the recording apparatus.   2. The acquisition unit according to claim 1, wherein the acquisition unit acquires the second recordable time based on a recordable time per movie file and a number of movie files that can be recorded on the recording medium. Recording device.   When the file size of the moving image file being recorded reaches a predetermined value, the recording means closes the moving image file being recorded, generates a new moving image file, and continues recording moving image data. The recording apparatus according to claim 1 or 2. The recording means includes a first recording mode that divides the moving image file every time the file size of the moving image file being recorded reaches a predetermined value, and a second recording mode that records the moving image file being recorded without being divided. And
The control means sets a short recordable time out of the first recordable time and the second recordable time when the recording means records moving image data in the first mode. Control to display on the display unit as the recordable time of video data to
When the recording unit records moving image data in the second mode, control is performed so that the first recordable time is displayed on the display unit as the recordable time of moving image data on the recording medium. The recording apparatus according to any one of claims 1 to 3. In the recording of moving image data in the first mode in which the recording unit divides the moving image file every time the file size of the moving image file being recorded reaches a predetermined value, only the final file that can be recorded on the recording medium is the predetermined file A third mode for recording video data exceeding the value of
When the recording unit records moving image data in the third mode, the control unit causes the display unit to display the first recordable time as the recordable time of moving image data on the recording medium. The recording apparatus according to claim 1, wherein the recording apparatus is controlled as follows. Recording a moving image file including moving image data on a recording medium;
A first recordable time that can be recorded on the recording medium based on the free space that can be recorded on the recording medium is acquired, and a second that can be recorded on the recording medium based on the number of files that can be recorded on the recording medium. Obtaining the recordable time of
A step of controlling the display unit to display a short recordable time out of the first recordable time and the second recordable time as the recordable time of moving image data on the recording medium. A control method for a recording apparatus.

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