JP2019180054A - Image recording device and control method thereof - Google Patents

Abstract

To provide an image recording device capable of recording management files including information on an appropriate reel number even when a management file is generated for each moving image format.SOLUTION: When a recording format of a moving image file is set to a first moving image format and although a management file of the first moving image format is not recorded on a recording medium, a management file of another moving image format is recorded, control is performed so as to determine a reel number of the recording medium on the basis of information on the reel number included in the management file of the other moving image format (S206, S207, and S208), and record a management file of the first moving image format including information on the determined reel number on the recording medium.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an image recording apparatus.

  In video cameras such as digital cinema cameras as image recording devices, data management and post-production data management are performed smoothly, so that film recording practices are followed and the recording medium is uniquely associated before and during shooting. Set the reel number. Then, the set reel number is recorded in a management file or the like in which shooting content information (file name and the like) is recorded for use as a list of shooting content (Patent Document 1). At the time of reproduction, the reel number set on the recording medium can be grasped by reading the reel number information from the recording medium. The reel number is used for data management of photographed content together with the date and camera name. In that case, mixing of a plurality of reel numbers on the same recording medium has an unacceptable problem because it reduces the operability of data management.

  In addition, when managing shot content collectively using a management file that contains attribute information of the shot content such as the file name, there is a use case that divides the usage for each video format, so it is managed for each video format on the same recording medium. May generate a file. In such an operation, it is necessary to avoid that a management file in which a different reel number is assigned for each moving image format on the same recording medium is not generated.

JP, 2006-167788, A

  Even when a management file is generated and recorded for each moving image format in the same recording medium, it is desirable to assign the same reel number to the management file in the same recording medium.

  Therefore, an object of the present invention is to provide an image recording apparatus capable of recording a management file including information on appropriate reel numbers even when a management file is generated for each moving image format.

In order to solve the above-described problem, an image recording apparatus of the present invention provides
An image recording apparatus in which a recording medium is detachable, a recording control means for controlling recording of a moving image file and a management file including information on a reel number of the recording medium on the recording medium, and a recording medium for recording on the management file And a setting means for setting a recording format of the moving image file from a plurality of moving image formats, and the recording control means records the management file on the recording medium for each moving image format. When the recording format of the moving image file is set to the first moving image format and the management file of the first moving image format is not recorded on the recording medium, but the management file of another moving image format is recorded, The determining means determines the reel number of the recording medium based on the reel number information included in the management file of another video format, Recording control means, a management file of the first video format including information of the determined reel number and controls to record on the recording medium.

  According to the present invention, it is possible to provide an image recording apparatus capable of recording a management file including information on appropriate reel numbers even when a management file is generated for each moving image format.

Block diagram of image recording device Flow chart of management file generation processing before starting video recording Management file generation and recording process flowchart for video recording Schematic diagram of management file generation / recording process in image recording apparatus 100

<First Embodiment>
FIG. 1 is a block diagram illustrating an internal configuration example of an image recording apparatus 100 according to the present embodiment. In the present invention, an imaging apparatus will be described as an example of the image recording apparatus 100, but the present invention can be applied to any apparatus or system capable of recording a moving image on a recording medium. As shown in FIG. 1, the image recording apparatus 100 includes a bus 101, a CPU 102, a ROM 103, a RAM 104, an operation control unit 105, an operation unit 106, a display control unit 107, a display unit 108, a recording control unit 109, a recording medium 110, and an image pickup. Part 111 and a reel number setting part 112.

  The bus 101 includes an address bus, a data bus, and a control bus. The bus 101 is used when commands and data are communicated between the components of the image recording apparatus 100.

  The CPU 102 is a processor for reading out a program stored in the ROM 103 and executing the program to control each component of the image recording apparatus 100. The ROM 103 is a non-volatile memory that stores programs, various setting information, and the like. The RAM 104 is a volatile memory used as a work memory.

  The display unit 108 includes a display such as a TFT liquid crystal. The display unit 108 displays a menu setting selection screen, a live view image captured by the imaging unit 111, an image recorded on the recording medium 110, and the like on the TFT liquid crystal.

  The display control unit 107 performs various types of image processing for outputting in an image format (such as an aspect ratio) suitable for the display unit 108.

  The operation unit 106 includes a power button, a shutter button, a moving image recording button, and a cross key for performing a selection operation such as menu setting on the UI screen displayed on the display unit 108. The operation unit 106 may be realized by a touch panel instead of a physical button.

  The operation control unit 105 detects that the user has operated the operation unit 106 and notifies the CPU 102 of the detected operation.

  The recording medium 110 is a detachable recording medium such as an SD card, and is inserted into the image recording apparatus 100 in order to record image data.

  The recording control unit 109 is a control unit for writing / reading data to / from the recording medium 110. The recording control unit 109 receives the reading command notified from the CPU 102, sequentially reads the designated area of the recording medium 110 for every fixed size, and develops and buffers the RAM 104. Further, the recording control unit 109 receives a write command notified from the CPU 102, receives write target data (image data, management data, etc.) developed in the RAM 104, and sequentially writes the received data to the recording medium 110 at a certain size. . Next, when reading or writing is completed, the recording control unit 109 notifies the CPU 102 to that effect.

  The imaging unit 111 includes a photographic lens, an image sensor, an image processing circuit, and the like. First, a subject image incident through a photographing lens is formed on an image sensor and photoelectrically converted to generate a video signal. Subsequently, the image processing circuit performs various image processing on the generated video signal to generate image data. In the case of still image shooting, a still image file is generated by encoding in a recording format such as JPEG. H. H.264 / AVC encoded moving image data and audio data input from a microphone (not shown) are multiplexed and shaped into a moving image format set as a recording format to generate a moving image file. Since the generated image file is written to the recording medium 110, the CPU 102 issues a write command.

  The reel number setting unit 112 is a setting unit for changing the set value of the reel number recorded in the ROM 103. “001” is recorded in the ROM 103 as an initial value of the set value of the reel number. The reel number setting unit 112 changes the set value of the reel number recorded in the ROM 103 in accordance with the user's selection operation on the operation unit 106 notified from the CPU 102. On the menu setting screen, the reel number setting value can be changed by initializing the reel number or selecting a reel number value (for example, “007” or the like) for the next recording on the recording medium.

  The image recording apparatus 100 in FIG. 1 has a plurality of blocks. A dedicated processing circuit may be used for each block, or may be realized by a general-purpose processor reading a processing program from the ROM and executing processing based on the program. A plurality of blocks may be realized by one processor.

  A management file recorded on the recording medium 110 by the image recording apparatus 100 in the present embodiment will be described with reference to FIG.

  As shown in FIG. 4A, the recording medium 110 includes folders (first moving image format folder 400, second moving image format folder) for each moving image format (for example, MXF file and MP4 file). 410) and management files (management file 1, management file 2).

  As shown in FIG. 4B, each management file describes information on the reel number and information on the file name of the moving image file recorded in the same folder as the management file.

  In the first moving image format folder 400, a moving image file 11, a moving image file 12, and a moving image file 13 are recorded. Therefore, the management file 1 includes the reel number 402 and the file names of the moving image file 11, the moving image file 12, and the moving image file 13 as the moving image file information 403 recorded in the first moving image format folder 400. is described.

  The moving image file 21 is recorded in the folder 410 of the second moving image format. Therefore, in the management file 2, the reel number 412 and the file name of the moving image file 21 are described as moving image file information 413 recorded in the folder 410 of the second moving image format.

  As described above, in this embodiment, a management file is recorded for each moving image format, and reel number information is recorded in the management file so that the reel number can be confirmed from any management file. Here, since the reel number is information uniquely associated with the recording medium, it is necessary to record the same reel number even in different management files within the same recording medium.

  As a method of recording the same reel number even in different management files, it is conceivable to collectively create management files of all moving image formats that can be recorded in the image recording apparatus and record them in a lump. Since information is recorded in a lump, information of the same reel number can be easily recorded. However, in this case, a management file is also generated for a moving image format in which no moving image file is recorded, and unnecessary data is recorded. Further, since the management file is recorded without data, there is a possibility that confusion will occur when the management file is confirmed by the user or another image recording apparatus.

  For this reason, in the present embodiment, when the moving image file is actually recorded, if the moving image format management file of the moving image file to be recorded is not recorded on the recording medium 110, the management file including the reel number information is recorded. It is recorded on the medium.

  Reel number generation and recording processing in this embodiment will be described with reference to FIGS. These processes are executed by controlling each block and performing various calculations based on a program read from the ROM 103 by the CPU 102.

  A management file generation process before the start of recording will be described with reference to FIG. First, in S200, the CPU 102 determines whether or not the moving image format setting has been changed. Specifically, the CPU 102 determines whether the user has changed the moving image format using the operation unit 106 based on the selection operation on the operation unit 106 notified from the operation control unit 105. If it is determined that the moving image format has been changed, the process proceeds to S201, and the process of the flowchart of FIG. 2 is executed. Note that when the power of the image recording apparatus 100 is turned on or set to the shooting mode, the processing after S201 in FIG. 2 is executed even if the moving image format is not changed.

  In S <b> 201, the CPU 102 inquires through the recording control unit 109 whether or not a management file exists in the recording medium 110 attached to the image recording apparatus 100, and the management file exists in the recording medium 110. (Recorded). If it is determined that the management file does not exist (not recorded) on the recording medium 110, the process proceeds to S202. On the other hand, if it is determined that the management file exists (recorded) in the recording medium 110, the process proceeds to S204.

  In S202, when recording the management file, the CPU 102 enables an update flag indicating whether or not to update the set value of the reel number recorded in the ROM 103, stores it in the RAM 104, and proceeds to S203.

  In S203, the CPU 102 reads the set value of the reel number recorded in advance in the ROM 103, and sets the read reel number as a reel number to be recorded in a newly generated management file.

  In S204, when recording the management file, the CPU 102 invalidates the update flag indicating whether or not to update the setting value of the reel number recorded in the ROM 103, stores it in the RAM 104, and proceeds to S205.

  In S <b> 205, the CPU 102 acquires the setting of the currently set moving image format, and determines whether or not the management file of the currently set moving image format to be recorded exists in the recording medium 110. If there is no moving image format management file to be recorded, the process proceeds to S206. On the other hand, if it is determined that there is a management file of the moving image format to be recorded, the process proceeds to S209.

  Here, the transition to S206 is that a management file of a moving image format to be recorded does not exist on the recording medium 110 mounted on the image recording apparatus 100, but a management file of another moving image format that is not a recording target is recorded. It will be the case. Further, the process proceeds to S209 when a management file of a moving image format to be recorded exists in the recording medium 110 mounted on the image recording apparatus 100. The process proceeds to S202 when there is no management file in the recording medium 110 mounted on the image recording apparatus 100.

  In S <b> 206, the CPU 102 reads a management file of another moving image format that is not a recording target from the recording medium 110 and develops it in the RAM 104. Subsequently, in S207, the CPU 102 analyzes the management file developed in the RAM 104 in S206, and acquires the reel number recorded in the management file of the moving image format that is not the recording target. Subsequently, the flow proceeds to S207. Since the management file read in S206 is not used thereafter unless the moving image format setting is changed, it may be deleted from the RAM 104.

  In S208, the CPU 102 stores the reel number acquired from the management file of the moving image format not to be recorded in S207 in the RAM 104 as the reel number to be recorded in the management file of the moving image format to be recorded.

  In step S209, the CPU 102 reads the management file of the moving image format to be recorded from the recording medium 110, expands it in the RAM 104, and ends the management file generation process before starting recording. In other words, when the management file of the recording target moving image format exists in the recording medium 110 attached to the image recording apparatus 100, the process proceeds to S209, the management target file of the recording target moving image format is recorded. A new management file is not generated.

  When the management file of the moving image format to be recorded is not recorded and a new management file is generated, the processing from S210 is executed.

  In S <b> 210, the CPU 102 reads a management file template recorded in the ROM 103 and expands it in the RAM 104 in order to generate a management file in a moving image format to be recorded. That is, a management file that does not include moving image file information or reel number information is generated in the RAM 104.

  In S211, the CPU 102 updates the reel number information of the management file developed in the RAM 104 to the reel number set in S203 or S208. That is, a management file including reel number information is generated and temporarily stored in the RAM before starting the recording of the moving image file.

  As described above, when no management file is recorded, the management file of the moving image format to be recorded is generated using the set value of the reel number recorded in advance in the ROM as the reel number. If there is no management file for the video format to be recorded but a management file for another video format that is not a recording target is recorded, the reel number recorded in the management file for the other video format is used. Then, a management file of a moving image format to be recorded is generated.

  Next, the flow of management file generation and recording processing during recording of a moving image file will be described with reference to FIG.

  When the user operates the operation unit 106 to notify the CPU 102 from the operation control unit 105 that an instruction to start recording a moving image is issued, the processing in FIG. 3 is started.

  In S300, the imaging unit 111 performs moving image shooting, various image processing, compression processing, and the like, generates a moving image file, and stores it in the RAM 104.

  In S301, the CPU 102 adds the information of the moving image file generated in S300 to the management file that has been generated in the RAM 104 in advance before the recording instruction of the moving image by the process of FIG. Information such as the file name of the moving image file generated in S300 is added to an area for recording information of the moving image file in the management file stored in the RAM 104 (areas 403 and 413 in FIG. 4). The information of the moving image file to be recorded in the management file is not limited to the file name, and the shooting date / time and recording time may be recorded. Subsequently, the flow proceeds to S302.

  In S <b> 302, the CPU 102 determines whether or not an update flag indicating whether or not to update the set value of the reel number recorded in the ROM 103 is valid with reference to the RAM 104. If it is determined that the update flag is valid, the process proceeds to S303. If it is determined that the update flag is invalid, the process proceeds to S306 without executing the processes of S303 to S305, and the process of writing the management file expanded in the RAM 104 to the recording medium 110 is executed.

  In step S <b> 303, the CPU 102 acquires the set value of the reel number recorded in the ROM 103. Then, the reel number of the management file developed in the RAM 104 is updated to the acquired reel number. Since this process is the same in S203 and S211 in FIG. 2, either one may be performed.

  In step S <b> 304, the reel number setting unit 112 increments the set value of the reel number recorded in the ROM 103. In step S <b> 305, the CPU 102 invalidates the update flag stored in the RAM 104. Thereby, the set value of the reel number recorded in the ROM 103 is not updated at the next recording of the moving image file. Since the set value of the reel number in the ROM 103 is updated, the next time the reel number set value recorded in the ROM 103 is used, the number is different from the current reel number.

  In S <b> 306, the recording control unit 109 writes the management file expanded in the RAM 104 to the recording medium 110. In step S <b> 307, the recording control unit 109 writes the moving image file generated in step S <b> 300 and stored in the RAM 104 to the recording medium 110. In the above description, the management file is recorded before the moving image file is recorded on the recording medium 110, but either one may be recorded first. Further, the processing of S301 to S306 may be executed in parallel with the recording of the moving image file on the recording medium 110.

  By performing such processing, even when a management file is generated for each moving image format, information of the same reel number is recorded in the management file in one recording medium. If no management file is recorded in the recording medium, the setting value recorded in advance in the ROM of the image recording apparatus is used as the reel number recorded in the management file. Since such reel number determination and management file generation are performed before recording a moving image, it is possible to prevent a processing delay from occurring during recording of the moving image. Then, only when the management file including the reel number of the set value is recorded on the recording medium, the set value of the reel number of the ROM is incremented. Different reel numbers can be set.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined.

  Also, when a software program that realizes the functions of the above-described embodiments is supplied from a recording medium directly to a system or apparatus having a computer that can execute the program using wired / wireless communication, and the program is executed Are also included in the present invention.

  Accordingly, the program code itself supplied and installed in the computer in order to implement the functional processing of the present invention by the computer also realizes the present invention. That is, the computer program itself for realizing the functional processing of the present invention is also included in the present invention.

  In this case, the program may be in any form as long as it has a program function, such as an object code, a program executed by an interpreter, or script data supplied to the OS.

  The recording medium for supplying the program may be, for example, a magnetic recording medium such as a hard disk or a magnetic tape, an optical / magnetomagnetic storage medium, or a nonvolatile semiconductor memory.

  As a program supply method, a computer program that forms the present invention is stored in a server on a computer network, and a connected client computer downloads and programs the computer program.

Claims (10)

An image recording apparatus in which a recording medium is detachable,
A recording control means for controlling to record a moving image file and a management file including information on a reel number of the recording medium on the recording medium;
Determining means for determining a reel number of the recording medium to be recorded in the management file;
Setting means for setting the recording format of the video file from a plurality of video formats,
The recording control means records the management file on the recording medium for each moving image format,
When the recording format of the moving image file is set to the first moving image format, and the management file of the first moving image format is not recorded on the recording medium, but the management file of another moving image format is recorded The determining unit determines a reel number of the recording medium based on reel number information included in the management file of the other moving image format, and the recording control unit includes the determined reel number information. An image recording apparatus that controls to record the management file of the first moving image format on the recording medium.   When no management file of any moving image format is recorded on the recording medium, the determining unit determines a reel number of the recording medium based on a reel number preset in the image recording apparatus, The image recording apparatus according to claim 1, wherein the recording control unit controls to record a management file including information on the determined reel number on a recording medium.   When the recording format of the moving image file is set to the first moving image format, and no management file of any moving image format is recorded on the recording medium, the determining means is set in advance in the image recording apparatus. The recording control unit determines a reel number of the recording medium based on the reel number being recorded, and the recording control unit records the management file of the first moving image format including the information on the determined reel number on the recording medium. The image recording apparatus according to claim 1, wherein the image recording apparatus is controlled.   The recording control means, when the management file of the moving picture format set as the recording format of the moving picture file by the setting means is not recorded on the recording medium, the set moving picture according to a moving picture recording start instruction 2. The image recording apparatus according to claim 1, wherein control is performed so that a format management file is recorded on the recording medium. Generating means for generating a management file to be recorded on the recording medium;
Storage means for temporarily storing the management file generated by the generating means,
Information on the reel number determined by the determining unit before the recording instruction of the moving image when the management file of the moving image format set as the recording format of the moving image file by the setting unit is not recorded on the recording medium. A management file including the management file stored in the storage unit, and the recording control unit generates a management file stored in the storage unit. The image recording apparatus according to claim 2, wherein control is performed so that recording is performed on the recording medium.   When the management file of the moving image format set by the setting unit is not recorded on the recording medium, the determination unit sets the reel number of the recording medium according to the setting of the moving image format by the setting unit. 6. The image recording apparatus according to claim 5, wherein a management file including information on the determined reel number is generated by the generation unit and stored in the storage unit.   The recording control unit records the moving image file and a management file in which information related to the moving image file is added to the management file stored in the storage unit in the recording medium in response to the moving image recording instruction. The image recording apparatus according to claim 5, wherein the image recording apparatus is controlled as follows.   The management file including information on the reel number determined by the determining unit based on the reel number set in advance in the image recording apparatus is set in the image recording apparatus in response to recording on the recording medium. The image recording apparatus according to claim 2, further comprising an updating unit configured to update the reel number being stored. A control method for an image recording apparatus to which a recording medium can be attached and detached,
A setting process for setting the recording format of the video file from a plurality of video formats;
A determination step of determining a reel number of the recording medium;
A recording control step for controlling the recording file including information on the reel number of the recording medium to be recorded on the recording medium,
In the recording control step, the management file is recorded on the recording medium for each moving image format,
When the recording format of the moving image file is set to the first moving image format, and the management file of the first moving image format is not recorded on the recording medium, but the management file of another moving image format is recorded In the determining step, the reel number of the recording medium is determined based on the reel number information included in the management file of the other video format, and the recording control step includes the determined reel number information. A control method for an image recording apparatus, comprising: controlling the management file of the first moving image format to be recorded on the recording medium.   A program for causing a computer to function as each unit of the image recording apparatus according to any one of claims 1 to 8.

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