JP7146428B2 - Image recording device and its control method - Google Patents

Description

The present invention relates to an image recording apparatus.

In video cameras such as digital cinema cameras as image recording devices, in order to facilitate data management and post-production data management, following the conventions of film shooting, uniquely linking to the recording medium before and during shooting. Set the reel number. Then, the set reel number is recorded in a management file or the like in which information (file name, etc.) of the captured content is recorded in order to use it as a catalog of the captured content (Patent Document 1). At the time of reproduction, by reading reel number information from the recording medium, it is possible to grasp the reel number set in the recording medium. The reel number, together with the date and camera name, is used for data management of captured content. At that time, there is an unacceptable problem that a plurality of reel numbers coexist on the same recording medium lowers the operability of data management.

Also, when collectively managing captured content using a management file that describes the attribute information of the captured content such as the file name, there are use cases where the usage is divided for each video format. may generate files. In such an operation, it is necessary to avoid generating a management file in which a different reel number is assigned to each moving image format on the same recording medium.

JP 2016-167788 A

Even when management files are 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 files in the same recording medium.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an image recording apparatus capable of recording a management file including appropriate reel number information even when a management file is generated for each moving image format.

In order to solve the above problems, the image recording apparatus of the present invention includes:
An image recording apparatus having a detachable recording medium, the recording control means for controlling recording of a moving image file and a management file including reel number information of the recording medium on the recording medium;
determining means for determining the reel number of the recording medium to be recorded in the management file; and setting means for setting the recording format of the moving image file from among a plurality of moving image formats, wherein the recording control means determines the moving image format. the management file is recorded on the recording medium each time, 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; is recorded, the determining means determines the reel number of the first moving image format based on reel number information included in the management file of the other moving image format; The recording control means is characterized in that it controls to record the management file of the first moving picture format including the determined reel number information on the recording medium.

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

Block diagram of image recording device Flowchart of management file generation processing before video recording starts Flowchart of management file generation and recording processing when recording video Schematic diagram of management file generation/recording processing in the image recording apparatus 100

<First Embodiment>
FIG. 1 is a block diagram showing an internal configuration example of an image recording apparatus 100 according to this embodiment. In the present invention, an imaging device will be described as an example of the image recording device 100, but the present invention can be applied to any device or system that can record moving images 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, an imaging It is composed of a section 111 and a reel number setting section 112 .

A bus 101 is composed of an address bus, a data bus, and a control bus. A bus 101 is used to communicate commands and data between the components of the image recording apparatus 100 .

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

The display unit 108 is composed of 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 in the recording medium 110, and the like on a TFT liquid crystal for the user.

A display control unit 107 performs various image processing for outputting an image in an image format (aspect ratio, etc.) suitable for the display unit 108 .

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

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

A recording medium 110 is a removable recording medium such as an SD card, and is inserted into the image recording apparatus 100 to record image data.

A recording control unit 109 is a control unit for writing data to and reading data from the recording medium 110 . The recording control unit 109 receives the read command notified from the CPU 102, sequentially reads the specified area of the recording medium 110 in units of a certain size, develops it in the RAM 104, and buffers it. In addition, 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 for each fixed size. . Next, when reading or writing is completed, the recording control unit 109 notifies the CPU 102 to that effect.

The imaging unit 111 is composed of a photographing 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 generated video signal is subjected to various image processing in the image processing circuit to generate image data. In the case of still image shooting, the image is encoded in a recording format such as JPEG to generate a still image file. In the case of moving picture shooting, H. H.264/AVC encoded video data and audio data input from a microphone (not shown) are multiplexed and shaped into a video format set as a recording format to generate a video file. Since the generated image file is written to the recording medium 110, the CPU 102 issues a write command.

A reel number setting unit 112 is a setting unit for changing the setting value of the reel number recorded in the ROM 103 . "001" is recorded in the ROM 103 as the initial value of the set value of the reel number. The reel number setting unit 112 changes the setting value of the reel number recorded in the ROM 103 according to the user's selection operation to 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 the reel number value (for example, "007" etc.) for the next recording on the recording medium.

The image recording apparatus 100 of FIG. 1 has a plurality of blocks. A dedicated processing circuit may be used for each block, or a general-purpose processor may read a processing program from the ROM and execute processing based on the program. Also, a plurality of blocks may be implemented by a single processor.

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

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

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

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

A moving image file 21 is recorded in the second moving image format folder 410 . Therefore, in the management file 2, the file name of the moving image file 21 is described as the reel number 412 and the 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, reel number information is recorded in each management file, and the reel number can be confirmed from any management file. Here, since the reel number is information that is 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 if the management files are different, it is conceivable to collectively create and collectively record management files for all moving picture formats recordable in the image recording apparatus. Since it is recorded all at once, it is possible to easily record the information of the same reel number. However, in this case, a management file is generated even for a moving image format in which moving image files are not recorded, and unnecessary data is recorded. In addition, since the management file is recorded without data, confusion may occur when the user or another image recording device confirms the management file.

Therefore, in the present embodiment, when a moving image file is actually recorded, if the management file of the moving image format of the moving image file to be recorded is not recorded on the recording medium 110, the management file including reel number information is recorded. I try to record it on media.

Generation and recording processing of reel numbers in this embodiment will be described with reference to FIGS. These processes are executed by controlling each block and performing various calculations based on programs read from the ROM 103 by the CPU 102 .

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

In S201, CPU 102 inquires via recording control unit 109 whether or not a management file exists in recording medium 110 attached to image recording apparatus 100. (recorded). If it is determined that the management file does not exist (is not recorded) in the recording medium 110, the process proceeds to S202. On the other hand, if it is determined that the management file exists (is recorded) in the recording medium 110, the process proceeds to S204.

In S202, the CPU 102 validates an update flag indicating whether or not to update the setting value of the reel number recorded in the ROM 103 when recording the management file, 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 the reel number to be recorded in the newly generated management file.

In S204, 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 when recording the management file, stores it in the RAM 104, and shifts 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 management file for the moving image format 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 made because the recording medium 110 attached to the image recording apparatus 100 does not have a management file of a moving image format to be recorded, but a management file of another moving image format not to be recorded is recorded. If there is Also, the process shifts to S209 when the management file of the moving image format to be recorded exists in the recording medium 110 attached to the image recording apparatus 100 . Also, the transition to S202 occurs when there is no management file in the recording medium 110 loaded in the image recording apparatus 100 .

In S206, the CPU 102 reads from the recording medium 110 a management file of another moving picture format not to be recorded, and develops it in the RAM 104. FIG. 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 not to be recorded. Then, it changes to S207. Since the management file read in S206 will not be used thereafter unless the setting of the moving picture format is changed, it may be deleted from the RAM 104 .

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

In S209, the CPU 102 reads the management file of the moving image format to be recorded from the recording medium 110, develops it in the RAM 104, and ends the management file generation processing before starting recording. That is, when the management file of the moving image format to be recorded exists in the recording medium 110 attached to the image recording apparatus 100 at which the process proceeds to S209, the management file of the moving image format to be recorded is recorded. management files are not generated.

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

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

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

As described above, when no management file is recorded, a reel number setting value pre-recorded in the ROM is used as a reel number to generate a management file of the moving image format to be recorded. If there is no management file for the moving picture format to be recorded, but a management file for another moving picture format not to be recorded is recorded, the reel number recorded in the management file for the other moving picture format is used. to generate a management file of the video format to be recorded.

Next, with reference to FIG. 3, the flow of management file generation and recording processing when recording a moving image file will be described.

When the user operates the operation unit 106 and the operation control unit 105 notifies the CPU 102 of an instruction to start recording a moving image, the processing in FIG. 3 is started.

In S<b>300 , the imaging unit 111 performs moving image shooting, various image processing, compression processing, etc., 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 generated in the RAM 104 in advance before instructing recording of the moving image by the processing of FIG. Information such as the file name of the moving image file generated in S300 is added to the areas (areas 403 and 413 in FIG. 4) for recording the moving image file information in the management file stored in the RAM 104 . The information of the moving image file recorded in the management file is not limited to the file name, and may be the shooting date and time, the recording time, and the like. Then, it changes to S302.

In S302, the CPU 102 refers to the RAM 104 and determines whether or not the update flag indicating whether or not to update the setting value of the reel number recorded in the ROM 103 is valid. 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 developed in the RAM 104 to the recording medium 110 is executed.

In S<b>303 , the CPU 102 acquires the setting 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. Note that this process is the same in S203 and S211 of FIG. 2, so either one of them may be performed.

Subsequently, in S<b>304 , the reel number setting unit 112 increments the reel number setting value recorded in the ROM 103 . Then, in S<b>305 , the CPU 102 invalidates the update flag stored in the RAM 104 . As a result, the setting value of the reel number recorded in the ROM 103 is not updated when recording the moving image file from the next time. Also, since the set value of the reel number in the ROM 103 is updated, the next time the set value of the reel number recorded in the ROM 103 is used, the reel number will be different from the current reel number.

In S<b>306 , the recording control unit 109 writes the management file developed in the RAM 104 to the recording medium 110 . Then, the recording control unit 109 writes the moving image file generated in S300 and stored in the RAM 104 to the recording medium 110 in S307. In the above description, the management file is recorded before recording the moving image file on the recording medium 110, but either one may be recorded first. Also, the processes of S301 to S306 may be executed in parallel with the recording of the moving image file on the recording medium 110. FIG.

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 within one recording medium. If no management file is recorded in the recording medium, the set value recorded in advance in the ROM of the image recording apparatus is used as the reel number to be recorded in the management file. Since the determination of the reel number and the generation of the management file are performed before recording the moving image, it is possible to prevent the processing from being delayed during the recording of the moving image. By incrementing the ROM reel number setting value only when recording the management file containing the setting value reel number on the recording medium, the next time the ROM reel number setting value is used, this time A different reel number can be set.

Although the present invention has been described in detail based on its preferred embodiments, the present invention is not limited to these specific embodiments, and various forms without departing from the gist of the present invention can be applied to the present invention. included. Some of the above-described embodiments may be combined as appropriate.

In addition, when a software program that implements the functions of the above-described embodiments is supplied directly from a recording medium or via wired/wireless communication to a system or apparatus having a computer capable of executing the program, and the program is executed. is also included in the present invention.

Therefore, in order to implement the functional processing of the present invention in a computer, the program code itself supplied and installed in the computer also implements the present invention. In other words, the present invention also includes the computer program itself for realizing the functional processing of the present invention.

In that case, the form of the program, such as object code, a program executed by an interpreter, or script data supplied to the OS, does not matter as long as it has the function of a program.

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

Also, as a program supply method, a method of storing a computer program forming the present invention in a server on a computer network, and a connected client computer downloading and programming the computer program is also conceivable.

Claims (10)

An image recording device in which a recording medium is detachable,
recording control means for controlling recording of a moving image file and a management file including reel number information 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 a recording format of a moving image file from among a plurality of moving image 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 means determines the reel number of the first moving picture format based on reel number information included in the management file of the other moving picture format, and the recording control means determines the determined reel number. An image recording apparatus characterized by performing control so as to record a management file of said first moving picture format containing information on said recording medium. if no moving image format management file is recorded on the recording medium, the determining means determines the reel number of the recording medium based on the reel number preset in the image recording apparatus; 2. The image recording apparatus according to claim 1, wherein said recording control means performs control to record a management file containing information of said 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 the management file of any moving image format is not recorded on the recording medium, the determining means is set in advance in the image recording device. The reel number of the recording medium is determined based on the reel number of the recording medium, and the recording control means records the management file of the first moving picture format including the information of the determined reel number on the recording medium. 2. The image recording apparatus according to claim 1, wherein the image recording apparatus controls The recording control means responds to an instruction to start recording a moving image when a management file in a moving image format set as the recording format of the moving image file by the setting means is not recorded on the recording medium. 2. The image recording apparatus according to claim 1, wherein control is performed to record a format management file 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 generation means;
information of the reel number determined by the determination means before the instruction to record 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 means is not recorded on the recording medium; is generated by the generation means and stored in the storage means, and in response to the instruction to record the moving image, the recording control means stores the moving image file and the management file stored in the storage means 3. The image recording apparatus according to claim 2, wherein control is performed so as to record on the recording medium. When the management file of the moving picture format set by the setting means is not recorded on the recording medium, the reel number of the recording medium is set by the determining means in response to the setting of the moving picture format by the setting means. 6. The image recording apparatus according to claim 5, wherein said generation means generates a management file containing information on said determined reel number and stores it in said storage means. The recording control means records the moving image file and a management file in which information about the moving image file is added to a management file stored in the storage means, in response to the recording instruction of the moving image, on the recording medium. 6. The image recording apparatus according to claim 5, wherein the control is such that set in the image recording device in response to recording on the recording medium a management file containing reel number information determined by the determining means based on reel numbers preset in the image recording device; 3. The image recording apparatus according to claim 2, further comprising updating means for updating the reel number. A control method for an image recording device in which a recording medium is detachable, comprising:
a setting step of setting a recording format of a moving image file from among a plurality of moving image formats;
a determination step of determining the reel number of the recording medium;
a recording control step for controlling recording of a management file containing information on the reel number of the recording medium 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. and determining the reel number of the first moving picture format based on reel number information included in the management file of the other moving picture format in the determining step, and determining the determined reel number in the recording control step. A control method for an image recording apparatus, comprising: controlling to record a management file of the first moving image format containing information on the recording medium. A program for causing a computer to function as each means of the image recording apparatus according to any one of claims 1 to 8.

Images