JP6504927B2 - Recording apparatus and control method of recording apparatus - Google Patents

Description

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

  In recent years, with the progress of high quality and high resolution moving image data, the amount of data per frame making up the moving image data increases, or the number of frames per unit time (fps) increases. The capacity of video data tends to increase dramatically. Also, with the increase in moving image data capacity, there is a large capacity memory (recording medium) such as 256 gigabytes (GB) and 512 GB.

  Moving image data captured by a digital camera or the like is generally recorded in a moving image file format such as MOV or MP4, and those moving image files are recorded on a recording medium in a file system such as FAT 32 (File Allocation Table 32 bit). In the file system, there is an upper limit to the manageable file size, and the data capacity per file is limited. For example, it is not possible to record over 4 GB per file on a recording medium formatted in FAT32.

  Conventionally, when recording captured moving image data in a memory, it is displayed on the display unit how much remaining moving image data can be recorded, in order to prevent the storage capacity of the recordable memory from running out suddenly. There is an image recording apparatus (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 10-172269

  In order to record moving image data larger than the file size upper limit (4 GB in FAT 32) by the file system of the recording medium, there is a technique of dividing and recording the moving image data into a plurality of files. On the other hand, in the DCF (Design rule for Camera File System) standard used in digital cameras and video cameras, there is an upper limit to the number of directories that can be recorded in a recording medium and the number of files that can be recorded in each directory. For this reason, even if the recording medium has a recordable free space, the file can not be generated due to the upper limit of the number of files, and the moving image data may not be recorded.

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

  In order to achieve the above object, a recording apparatus according to the present invention can record on a recording medium based on recording means for recording a moving picture file including moving picture data on a recording medium, and a free space recordable on the recording medium Acquisition means for acquiring a first recordable time, and acquiring a second recordable time recordable on the recording medium based on the number of files recordable on the recording medium, and acquired by the acquisition means A control unit configured to control a display unit to display a shorter recordable time of the first recordable time and the second recordable time as a recordable time of moving image data on the recording medium It is characterized by

  According to the present invention, when recording moving image data on a recording medium, it is possible to more appropriately provide the user with the time that can be recorded on the recording medium.

It is a block diagram showing composition of a recording device in the present invention. 5 is a flowchart showing recording processing in the division recording mode of moving image data. 5 is a flowchart showing acquisition processing of the recordable time in the first embodiment. FIG. 6 is a schematic view of a case where a recordable time is displayed on a display unit 110. 5 is a flowchart showing a recording process in a movie data extended recording mode. 7 is a flowchart showing acquisition processing of a recordable time in the second embodiment.

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

(Embodiment 1)
FIG. 1 is a block diagram showing 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. An 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. Processing circuit and the like. When the control unit 105 outputs a still image recording instruction, the imaging unit 101 generates and outputs still image data of one screen at a timing corresponding to the still image shooting instruction, and stores the still image data in the volatile memory 102. Further, when the control unit 105 outputs a moving image recording instruction, the imaging unit 101 generates and outputs moving image data in a format according to the set number of pixels, the frame rate, the target bit rate, etc. It is stored 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, etc., 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 processed by the control unit 105 and data for generating an image (graphical user interface / GUI) of additional information to be displayed on the display unit 110 superimposed on still image data and moving image data. Etc are stored. The additional information is, for example, information such as a setting value at the time of recording a still image or a moving image, the recordable number of still images, the recording elapsed time of the moving image, and the recordable time. The signal processing unit 104 subjects the still image data and the moving image data output from the imaging unit 101 to encoding processing in accordance with a known encoding method such as JPEG or MPEG, and compresses the amount of information.

  The control unit 105 has a microcomputer (CPU) and other necessary memory, and controls the operation of each unit of the digital camera 100 according to an instruction from the operation unit 106 according to a program stored in the non-volatile 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, and a menu switch, and the user inputs The instruction is transmitted to the control unit 105. A part of the operation unit 106 may be a touch panel and may be attached to the display unit 110.

  The recording and reproducing unit 107 reads file system information, management information, and the like from the recording medium 108 and stores the information in the volatile memory 102. The information of the file system includes, for example, data indicating the file name of the file recorded on the recording medium 108, the file size, the recording address, and the like. Still image data, moving image data, audio data, and various information to be recorded in 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 according to a control command from the control unit 105, predetermined units of information such as still image data and moving image data stored in the volatile memory 102 Each time recording is performed on the recording medium 108. The recording and reproducing unit 107 also 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, for example, a random access recording medium such as a large capacity hard disk drive (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 an attachment / discharge 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 data of a GUI stored in the non-volatile memory 103 on the display unit 110 according to an instruction from the control unit 105. Perform image processing to The display unit 110 displays still image data, moving image data, GUI, and the like subjected to image processing in 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 an instruction to turn on the power is given from the operation unit 106, the control unit 105 controls each unit to set the digital camera 100 in the 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.

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

  Next, recording processing of moving image data will be described. In the present embodiment, the digital camera 100 records a moving image file including moving image data in the recording medium 108 in response to an instruction to start recording the moving image from the operation unit 106, and records the moving image data in accordance with the instruction to stop recording the moving image. To stop the recording process. In the present embodiment, recording of moving image data is performed in two recording modes. When the file size of the moving image file being recorded is larger than a predetermined threshold, a division recording mode in which a series of moving image data is divided and recorded into a plurality of files and a normal recording in which a series of moving image data is recorded in one moving image file There is a mode. In the division recording mode, a moving image file is newly generated on the recording medium 108 each 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 division recording mode based on the file system of the recording medium 108. Specifically, the control unit 105 analyzes the file system information stored in the volatile memory 102 to identify whether the file system used in the recording medium 108 is exFAT or FAT32. The control unit 105 determines that recording is not performed in the division recording mode (recording is performed in the normal recording mode) when the file system of the recording medium 108 is exFAT, and it is determined that recording is performed in the division recording mode in the case of FAT32. When recording in the division recording mode, a size smaller by a predetermined amount than the file size upper limit (4 GB for FAT 32) defined by the file system of the recording medium 108 is set as the file division threshold and stored in the volatile memory 102. Ru. The control unit 105 performs control 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 division recording mode. When instructed to start recording a moving image from the operation unit 106 in the recording standby state, the control unit 105 controls the respective units in step S201 to generate a new moving image file on the recording medium 108 and output from the imaging unit 101 Record movie data in the created movie file. At this time, the imaging unit 101 outputs moving image data of the number of pixels and the frame rate set by the user. Further, the signal processing unit 104 compresses the moving image data so as to achieve the target bit rate according to the set recording format of the moving image. Then, the recording / reproducing unit 107 records the compressed moving image data on the recording medium 108 in predetermined units along with the audio data input from the audio input unit (not shown).

  In step S202, the control unit 105 determines whether there is free space in the recording medium 108 capable of recording moving image data. When there is no free space, the control unit 105 stops the recording of moving image data in step S208. Then, in step S209, the control unit 105 causes the recording and reproducing unit 107 to form a file for which recording has been completed in a predetermined format (MOV, MP4, etc.) and record the file on the recording medium 108 (file closing process). End the process.

  If there is free space (Yes in S202), in step S203, the control unit 105 determines whether an instruction to stop recording moving image data has been received. When the recording stop instruction is received through the operation unit 106 or the like, the control unit 105 performs the process of ending the moving image data recording process of 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 the file size of the moving image file currently recorded has reached the threshold of file division stored in the volatile memory 102.

  If 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 moving image data recording process of step S201. If the file size of the moving image file being recorded reaches the file division threshold value, then in step S205, the control unit 105 terminates recording of the moving image data in the file currently being recorded and can generate a new next file? to decide. If a new file can be generated, the control unit 105 performs file close processing on the file for which recording has been completed (step S206), and generates a new file (step S207), and records moving image data in the new file. Continue. If a new file can not be generated (No in step S205), the control unit 105 performs processing for ending the moving image data recording process in steps S208 and S209 as described above.

  Next, a method of adding file names (file numbers) of moving image files, still image files, and various other files in this embodiment will be described. In the present 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 numerals from 100 to 999 is added. Further, a file name including a file number using numbers 0001 to 9999 is added to the files recorded in each directory.

  The new directory created on the recording medium 108 is recorded from the file of the file number 0001. When a new file is generated, the maximum file number of the files recorded in the file recording directory is increased by 1 and a file name including a continuous file number is added to the new file. When the file of file number 9999 is recorded in the directory and a file is newly generated next time, a new directory is created. Then, the maximum directory number among the directories recorded in the recording medium 108 is increased by one, a directory name including a continuous directory number is added to a new directory, and a file is recorded in the new directory. .

  For example, in the case of recording a newly generated file after recording files of file number 0001 to file number 9999 in the directory of directory number 100, a new directory of directory number 101 is created. Then, the newly generated file is recorded as a file of file number 0001 in the directory of directory number 101.

  As described with reference to FIG. 2 in the present embodiment, when moving image data is divided and recorded into a plurality of files, the file generated in step S207 in FIG. 2 is one file number of the file closed in step S206. File number is added.

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

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

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

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

  The setting items such as shooting conditions at the time of recording still image data and moving image data may be set by the user. The setting items for still image data include the number of recording pixels, white balance, exposure, and the like. The setting items for moving image data include the number of pixels per frame, the frame rate, the target bit rate, and the recording format of moving image data such as a compression method. When there are a plurality of setting items, the user may optionally set at least one of the plurality of setting items, or the user may set any one of the plurality of setting items in advance. Other items may be set automatically. For example, the recording format of moving image data is UHD (3840 × 2160/30 fps), FHD (1920 × 1080/30 fps), SD (640 × 480/30 fps), and the number of frame pixels and frame rate are set and selected from three types It may be configured.

  The control unit 105 stores, in the volatile memory 102, information indicating setting items for recording still image data and moving image data. When instructed to start recording still image data or moving image data from the operation unit 106, 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, reproduction processing of still image data and moving image data will be described. When the reproduction mode is instructed by the operation unit 106, the control unit 105 causes the display unit 110 to display an index screen including representative images (thumbnails) of still image files and moving image files recorded in the recording medium 108. The user operates the operation unit 106, selects one of representative images of the files displayed on the display unit 110, and instructs reproduction. When reproduction is instructed, the control unit 108 controls the recording and reproduction unit 107 to reproduce a still image file or a moving image file corresponding to the selected representative image. The recording and reproducing unit 107 reads out the designated still image file or moving image file from the recording medium 108 as needed according to an instruction from the control unit 105 and stores the file in the volatile memory 102. The signal processing unit 104 reads out and decodes the still image file or moving image file to be reproduced from the volatile memory 102, and stores it again in the volatile memory 102 as reproduced still image data or moving image data. The display unit 110 displays the still image data or the moving image data reproduced from the volatile memory 102 by the display control unit 109. When an instruction to stop reproduction is given from the operation unit 106, the control unit 108 stops reproduction of still image data or moving image data, and causes the display unit 110 to display the index screen again.

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

  In step S301, the control unit 105 acquires free space in the recording medium 108 capable of recording moving image data and still image data. Then, in step S302, the control unit 105 determines whether the recording medium 108 has a free space capable of recording moving image data. When there is no free space (No in step S301), in step S312, control unit 105 controls display control unit 109 to display on recording unit 108 that there is no recordable time of moving image data. To complete this process.

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

  In step S304, the control unit 105 acquires the recordable time A of moving image data in 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 (empty capacity 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 and the recording format of 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 S305, is the control unit 105 recorded in the divided recording mode in which moving image data is recorded while being divided into a plurality of files based on the information of the file system of the recording medium 108 stored in the volatile memory 102? Determine if. When the file system of the recording medium 108 is exFAT, the control unit 105 determines that recording is not performed in the division recording mode (recording is performed in the normal recording mode), and in the case of FAT32, recording is performed in the division recording mode (file size upper limit value Is 4GB).

  If it is determined in step S305 that recording is not performed in the division 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. Do. When the recording format of 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. 4A.

  When Movie Data is Recorded in the Split Recording Mode (Yes in Step S305) In step S306, the control unit 105 stores the upper limit of the file size when recording in the split recording mode, the file system stored in the volatile memory 102 Get from the information of When the file system of the recording medium 108 is FAT32, the upper limit 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 108. In the present embodiment, various files such as still image files and moving image files are generated according to the DCF standard. To the newly generated file, a file name recorded in the directory of the maximum directory number recorded in the recording medium 108 is added with a file name using a file number obtained by adding 1 to the maximum file number. Therefore, in the present embodiment, the number of files that can be recorded in the directory with the largest directory number recorded in the recording medium 108 is from 9999 of the largest value of the file numbers, the largest file of files recorded in the directory. It becomes the value minus the number. For example, when the maximum directory number recorded in the recording medium 108 is 900 and a file with the file number 9995 is 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 four.

  Furthermore, the number of files that can be recorded in a directory having a directory number not yet created in the recording medium 108 is 9999 for each directory. Therefore, the number of files that can be recorded in the directory with the directory number not yet created in the recording medium 108 is 999 multiplied by the value obtained by subtracting the maximum directory number recorded in the recording medium 108 from the maximum directory number 999. Value. From the above, the number of files that can be recorded in the recording medium 108 is the number of files that can be recorded in the directory of the directory number not created yet in the number of files that can be recorded in the directory with the largest directory number recorded in the recording medium 108 The result is

  The method of acquiring 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 not used in each directory as the file number of a new file, a value obtained by adding the number of recordable files in each directory including a directory not yet created is used. 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 recordable in the recording medium 108 acquired in step S307. In this embodiment, one moving image file at the target bit rate of the recording format of the moving image data set 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 per-recordable time. Specifically, the recordable time per file is obtained by (upper limit of file size) / (target bit rate of moving image data to be recorded). For example, when the recording format of the moving image data is the above-mentioned UHD, the target bit rate is 500 Mbps, and the upper limit of the file size is 4 GB, the recordable time per file is 1 minute and 4 seconds.

  The method of acquiring the recordable time per file is not limited to the above calculation method. For example, the value of recordable time per file is held in a table etc. in the non-volatile memory 103 etc. for each recording format of moving image data (the above UHD, FHD, SD etc.) and the recording format of the set moving image data Depending on the value may be read and obtained.

  Then, during recording standby of moving image data or when acquiring the recordable time B before the start of recording, it is possible to record a value obtained by multiplying the recordable time per file by the number of recordable files acquired in step S307. Let it be time B. 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 four, the recordable time B is 4 minutes and 16 seconds.

  When acquiring the recordable time B during recording of moving image data, the remaining recordable time of the file currently being recorded is added to the value of the recordable time per file multiplied by the number of recordable files. Is the 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 recordable time B is shorter than recordable time A (Yes at step S309), control unit 105 controls display control unit 109 to display recordable time B on display unit 110 at step S310. To complete this process. When the recording format of the moving image data is UHD and the recordable time B is 4 minutes and 16 seconds, the recordable time is displayed on the display unit 110 as shown in FIG. 4B. If recordable time A is shorter than recordable time B (No in step S309), control unit 105 causes display control unit 109 to display recordable time A on display unit 110 in step S311. To end this process.

  For example, it is assumed that the free capacity of the recording medium 108 is 48.4 GB and the number of recordable files is 4, and the moving image data of UHD is recorded with the upper limit value of the file size as 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, although the moving image data corresponding to the recording time of 12 minutes and 54 seconds can be recorded in the free space of the recording medium 108, 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 the present embodiment, 4 minutes and 16 seconds which can be actually recorded can be displayed on the display unit 110 as the recordable time.

  Although it has been determined in step S305 in FIG. 3 of the present embodiment that the file system of the recording medium 108 is exFAT, moving image data is not recorded in the division recording mode, 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 (such as 4 GB) by the user or the like. In such a case, the control unit 105 determines to record in the division 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 in step S306 in FIG. Get the upper limit value.

  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 And display a short recordable time. With such a configuration, it is possible to provide the user with a more appropriate recording time of moving image data on the recording medium.

Second Embodiment
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 in 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 exbibytes (EiB).

  In the first embodiment, it is determined based on the file system of the recording medium 108 whether moving image data is to be recorded in the division recording mode (step S305 in FIG. 3), and recording is not performed in the division recording mode when the file system is exFAT ( Recording is performed 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 of the file size is set to a value smaller than the capacity of the recording medium 108 by the user etc. Record with

  When the file system is exFAT and the upper limit of the file size is set by the user etc., a size smaller by a predetermined amount than the set upper limit of the file size is set as the threshold of file division and stored in the volatile memory 102 Be done. The control unit 105 performs control 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, the moving image file, the still image file, and other various files are generated based on the DCF standard. In this configuration, if a moving image file is generated so as not to exceed the set file size upper limit even if the file system is exFAT, the number of files can be increased even if there is free space available for recording on the recording medium 108. Due to the upper limit, video data may not be recorded.

  Therefore, in the present embodiment, only the final file recordable on the recording medium 108 (the file having the file number 9999 recorded in the directory having the directory number 999) is extended to record moving image data exceeding the set file size upper limit. It has a recording mode. When moving image data is recorded in the extended recording mode, the upper limit of the file size of the final file recordable on the recording medium 108 is defined in the file system of the recording medium 108 from the upper limit of the file size set for the user etc. It is changed to the upper limit value. Specifically, when the file system of the recording medium 108 is exFAT and the upper limit of the file size is set to 4 GB, the upper limit of the file size of the final file recordable on the recording medium 108 is changed to 16EiB (0xFFFFFFFFFFFFFFFF) Ru.

  In the present embodiment, it is determined whether the file system of the recording medium 108 is exFAT whether the extended recording of moving image data is possible. When the file system of the recording medium 108 is exFAT, even if the upper limit of the file size is set to 4 GB or 8 GB by the user etc., the upper limit of the file size on the file system is 16 EiB, which is much larger than the recording capacity of the recording medium. Great. Therefore, the final file can extend and record moving image data exceeding the set file size upper limit.

  With this configuration, even if the file system of the recording medium 108 is exFAT and the upper limit of the file size is set, the recordable free space of the recording medium 108 is efficiently used to record moving image data. 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 of recording moving image data in the extended recording mode when the upper limit of the file size is set by the user or the like. The processes performed in step S201 to step S209 in FIG. 5 are the same as the processes 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 threshold for file division when the file system of the recording medium 108 is FAT32 is a size smaller by a predetermined amount than the upper limit (4 GB) of the file size defined by FAT32 as described in the first embodiment. . The threshold of file division when the file system of the recording medium 108 is exFAT is a size 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 that the new file can not be created in step S205 if the file currently being recorded in the present embodiment is the final file of the final directory, the control unit 105 determines in step S501 whether extension recording of the moving image data is possible. To judge. In the present embodiment, the determination in step S501 is made based on whether the file system of the recording medium is exFAT. If the file system of the recording medium 108 is exFAT and extension recording of moving image data is possible, the control unit 105 updates the file size upper limit value of the file currently recorded (final file of 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 the moving image data is continuously recorded to the file currently being recorded. At this time, even if the control unit 105 controls the display control unit 109 to display, on the display unit 110, information indicating that moving image data is recorded exceeding the upper limit of the file size set by the user or the like. Good.

  When moving image data is recorded in the extended recording mode, the free space of the recording medium 108 runs out (No in step S202) or a recording stop instruction is received (Yes in step S203), the moving image data in steps S208 and S209 described above End the recording process of.

  If the file system of the recording medium 108 is FAT 32 or the like and extension 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.

  In the following, as described above in the present embodiment, the upper limit of the file size can be set by the user or the like, and the recordable time of moving image data in digital camera 100 capable of recording moving image data in extended recording mode Explain how to get

  FIG. 6 is a flow showing acquisition processing of recordable time of moving image data in the present embodiment. In the present embodiment, the processing of FIG. 6 is performed during recording standby of moving image data or before the start of recording, but may be performed at predetermined intervals during recording of 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 moving image data in the division recording mode, based on the information of the file system 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 to record in the divided recording mode when the file system of the recording medium 108 is FAT32 and when the file system is exFAT and the upper limit 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 division recording mode (recording is normally performed in the recording mode) when the file system of the recording medium 108 is exFAT and the file size upper limit is not set by the user or the like. .

  If it is determined in step S601 that recording in the division recording mode is not performed, the process advances 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.

  In the case of recording in the division recording mode, in step S603, the control unit 105 determines whether extension recording of moving image data is possible with the last file of the last directory recordable on the recording medium 108. In the present embodiment, the determination in step S602 is determined based on whether the file system of the recording medium 108 is exFAT. When the file system of the recording medium 108 is exFAT, it is possible to extend and record moving image data beyond the upper limit of the file size set in the final file, even if the upper limit of the file size is set. to decide. If the file system of the recording medium 108 is FAT32 or the like and not exFAT, the file system upper limit is determined by the file system, so even if it is the final file, the moving image data should be extended and recorded beyond the file size upper limit. I can not judge.

  When it is determined that extension 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 when extension recording of moving image data to the final file is continued beyond the upper limit value of the set file size, moving image data can be recorded in the recordable free space of the recording medium 108. is there.

  When it is determined that extension recording of moving image data is not possible (No in step S602), in step S603, the control unit 105 acquires the upper limit value of the file size when recording moving image data in the division recording mode. The upper limit value of the file size at the time of divisional recording is acquired from the information of the file system stored in the volatile memory 102 or the upper limit value of the set file size. From the file system information, if the file system of the recording medium 108 is FAT32, the upper limit of the file size for divisional recording is 4 GB, and if it is exFAT, the file size for divisional recording of the set upper limit of the file size The upper limit of Then, the control unit 105 performs the process of step S307 and subsequent steps.

  In the embodiment described above, it is judged whether the file system of the recording medium 108 is exFAT or not, whether the final file can extend record the moving image data beyond the upper limit of the file size. For example, when the upper limit of the file size is set to 2 GB by the user or the like in FAT32, for example, extension recording may be possible up to 4 GB, which is the upper limit of the file size in FAT32. In this case, the control unit 105 determines that extension recording is possible in step S602 in FIG.

  Then, the control unit 105 acquires the recordable time C based on the number of files recordable on the recording medium 108 instead of the recordable time A based on the recording capacity of the recording medium 108 (step S311) as the recordable time to be displayed. 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 except the final file, and the final file is 4BG) and the number of files recordable in the recording medium 108 acquired in step S307. Be done. Specifically, the recordable time C is moving image data to the final file (the upper limit of the file size is 4 GB) at the time when the moving image data can be recorded to the recordable file (the upper limit of the file size is 2 GB) other than the final file. It becomes the value which added the time which can be recorded.

  From the above, in the embodiment, when the moving image data can be extended and recorded in the final file, of the recordable time based on the free space of the recording medium and the recordable time based on the number of files recordable on the recording medium. Display the recordable time of moving image data more appropriately. 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 recordable time of moving image data on a more appropriate recording medium.

Reference Signs List 100 digital camera 101 imaging unit 102 volatile memory 103 non-volatile memory 104 signal processing unit 105 control unit 106 operation unit 107 recording and reproduction unit 108 recording medium 109 display control unit 110 display unit 111 internal bus

Claims (6)

Recording means for recording a moving image file including moving image data on a recording medium;
The first recordable time recordable on the recording medium is obtained based on the free space recordable on the recording medium, and the second recordable time can be recorded on the recording medium based on the number of files recordable on the recording medium Acquisition means for acquiring the recordable time of the
Of the first recordable time acquired by the acquisition means and the second recordable time, a shorter recordable time is displayed on the display unit as a recordable time of moving image data on the recording medium. And a control unit configured to control the recording unit.   2. The apparatus according to claim 1, wherein the acquisition unit acquires the second recordable time based on the recordable time per one moving image file and the number of moving image files recordable on the recording medium. Recording device.   The recording means is characterized in that, when the file size of the moving picture file being recorded reaches a predetermined value, the moving picture file being recorded is closed, a moving picture file is newly generated, and the recording of the moving picture data is continued. The recording apparatus according to claim 1. The recording means divides the moving image file into a first recording mode for dividing 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 for recording the moving image file being recorded without division Have and
The control means is configured to record the shorter recordable time of the first recordable time and the second recordable time when the recording means records moving image data in the first recording mode. Controlling to display the moving image data on the medium as the recordable time of the medium,
When the recording unit records moving image data in the second recording mode, the first recordable time is controlled to be 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, wherein the recording apparatus is characterized. The recording means divides the moving image file in the first recording mode in which the moving image file is divided every time the file size of the moving image file being recorded reaches a predetermined value. Have a third recording mode to record video data beyond the value of
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 when the recording means records moving image data in the third recording mode. The recording apparatus according to any one of claims 1 to 4, wherein the control is performed as follows. Recording a moving image file including moving image data on a recording medium;
The first recordable time recordable on the recording medium is obtained based on the free space recordable on the recording medium, and the second recordable time can be recorded on the recording medium based on the number of files recordable on the recording medium Obtaining the recordable time of the
Controlling, among the first recordable time and the second recordable time, the display unit to display a shorter recordable time as a recordable time of moving image data on the recording medium And controlling the recording apparatus.

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