JP2008113111A - Recording device - Google Patents

Abstract

【Task】
The file name of the video stream is skipped.
[Solution]
The management information of the latest recorded scene is read and the file number n is detected (S3). The recording time t (min) of the latest recording scene is detected (S4). Next, the file number N (= t + n + 1) of the file name of the scene to be recorded is set (S5). The next scene is recorded with a file name including the file number N (S6 to S9), and an object information file including the same file number is created (S10).
[Selection] Figure 3

Description

  The present invention relates to an apparatus for recording video as a file for each scene.

  In recent years, in digital video cameras, products that use magnetic tape as a video recording medium, as well as recording media that can be accessed randomly, such as a memory card using a non-volatile memory, a hard disk device, or an optical disk, have been put into practical use. Has been. If random access is possible, it is possible to find the recorded video instantly regardless of the recording position. In addition, a measure for preventing overwriting on the previously recorded video is provided in the file management.

  In addition, it has been proposed to record moving image data on a recording medium as an independent stream file for each scene so that the content can be easily edited after recording (for example, see Patent Document 1). The recorded video is generally transferred to a personal computer, a video recording / reproducing apparatus with a DVD (Digital Versatile Disk) recording function, etc. after shooting, and recorded on a DVD suitable for long-term storage after editing. It is.

  An SD-Video format as shown in FIG. 9 is known as a recording format when a memory card is used as a recording medium. Each time a user shoots one scene, a video stream file and an object information file are recorded. The extension of the video stream file is MOD, and the extension of the object information file is MOI. The file name of the video stream file is, for example, MOVxxx. MOD, and the file name of the object information file is MOVxxx. It becomes a MOI file, and a series of hexadecimal serial numbers are assigned to the three-digit portion of “xxx”.

  In FIG. 9, a folder SD_VIDEO for storing information relating to moving images is placed under the root directory of the recording area of the memory card. Under the folder SD_VIDEO, a management information folder MNG_INFO that stores management information files and a program folder PRG001 that stores moving image data in units of programs are placed.

  In the management information folder MNG_INFO, a management data file MGR_DATA storing overall version information and text information, a program management file PRG_MGR storing information such as the total number of programs, playback time and attributes, and playlist management A playlist management file PLST_MGR for storing information is stored.

  Under the program folder PRG001, a stream file (MOV) for storing compressed moving image data and an object information file (MOI) for storing object information such as a time stamp are stored in pairs for each scene. The program information file (PGI) stores the number of scenes in one program.

  In this recording method, when recording the recorded data on another medium, only one or a plurality of files corresponding to the desired scene may be read and transferred. This recording method has an advantage that since a stream is a separate file for each scene, it is difficult to form a huge file, and the compatibility with a system with a limited file size is good.

On the other hand, when the same editing is attempted in a filing method in which moving image data is stored in one stream file and scene identification information such as chapters and titles is recorded in another management information file as in the DVD-VR format. It is necessary to cut out a necessary part from one stream file of a large size by a seek operation.
JP 2003-022434 A

  In a recording format in which a scene and a file correspond one-on-one like the SD-Video format, it is necessary to avoid duplication of file names.

  As described above, when image data is recorded while adding file numbers one by one in the order of shooting, the recorded image data has consecutive file numbers in the recorded order.

  However, for example, as illustrated in FIG. MOD, MOV002. MOD, MOV003. When three scenes are recorded in the MOD, the file MOV002. When dividing the MOD into two scenes, the problem is what to do with one of the divided file names.

  For example, the file name MOV003. If the MOD can be used, the continuity of the scene becomes clear, but in the case of FIG. 9, the file name MOV003. MOD has been used. Used file name MOV003. If the serial number portion of the file name after MOD is carried down, file name collision can be avoided, but this is not practical when the number of scenes is large. In addition, a file name including an unused serial number, for example, MOV004. If MOD is used, the first half of the file MOV002. The number between the MOD and the second half file becomes discontinuous. Therefore, it becomes difficult to understand that these two files are originally one file and related files only by the file number.

  For example, when copying recorded data to another recording medium, it may be desired to copy a plurality of divided files together.

  However, when multiple file numbers after division are separated, it is difficult to assume multiple files divided only from the file number, and it is necessary to play back and check the contents of each file There is.

  Therefore, in view of the above-described problems, the present invention is based on a recording format in which a scene and a file have a one-to-one correspondence and file names are given in order of scenes. It is an object of the present invention to provide a device that can easily recognize that the file is a related file.

  In order to achieve the above object, a recording apparatus according to the present invention includes recording means for recording image data on a recording medium in accordance with a predetermined file format, and recording on the recording medium between recording start and recording stop. A management unit that manages the series of moving image data as a single moving image file and assigns a file name including a number to the moving image file to manage the file. After recording the moving image file of the first scene, a number obtained by adding a number according to a predetermined condition relating to the moving image file of the first scene to the moving image file number of the first scene is recorded. It is added to the moving image file of the second scene to be recorded.

  The recording apparatus according to claim 2 is characterized in that the predetermined condition is a recording time of the first scene.

  The recording apparatus according to a third aspect is characterized in that the predetermined condition is a file size of a moving image file of the first scene.

  A recording apparatus according to a fourth aspect includes an imaging unit that outputs the moving image data, and the imaging unit includes an automatic exposure adjustment unit that automatically adjusts an aperture and a shutter speed according to the brightness of the subject. The predetermined condition is the number of times the amount of change in brightness of the subject detected by the automatic exposure adjusting means during the first scene recording becomes a predetermined value or more.

  The recording apparatus according to claim 5 includes an imaging unit that outputs the moving image data, and the imaging unit detects a color temperature of a light source and automatically adjusts a white balance of the captured image. And the predetermined condition is a portion where the amount of change in the color temperature detected by the white balance adjusting means during the first scene shooting is greater than or equal to a predetermined value.

  The recording apparatus according to claim 6, wherein the recording unit further records the input audio data together with the moving image data, and the predetermined condition is that the input audio is recorded during the first scene recording. The amount of change in the data level is a predetermined value or more, or the sound level is a predetermined value or less.

  The recording apparatus according to claim 7, wherein a management information file in which management information for recording time or file management is recorded is generated corresponding to the moving image file, and the same number as the number assigned to the moving image file is set. By having the file name, the moving image file and the management information file are managed as a set.

  The recording apparatus according to claim 8, wherein the management means determines the number of the moving image file of the first scene when the number determined according to the predetermined condition exceeds a predetermined maximum value. The number added with the maximum value is assigned to the second moving image file.

  The recording apparatus according to claim 9, wherein the management unit divides the moving image file of the first scene according to the dividing instruction in response to a dividing instruction to divide one moving image file into two files. Of the two moving image files generated after the division, the file name of the previous part is given the same file name as the original file name before the division, and the file of the moving image file before the division is assigned to the file of the rear part. A number between the number and the number of the moving image file of the next scene is assigned.

  The recording apparatus according to claim 10, wherein the management unit includes a division position in the first moving image file before dividing, a moving image file number of the first scene, and a moving image file of the second scene. The number to be assigned to the file in the subsequent portion is determined based on the difference between the numbers.

  When the difference between the number of the moving image file of the first scene and the number of the moving image file of the second scene is 1, the recording apparatus according to claim 11 stores the moving image file of the first scene. It is characterized by prohibiting division.

  According to the present invention, the number of skips of the file number in the next scene is defined by information such as the shooting time of the previous scene. Since it is considered that the longer the time taken, the higher the probability that division will be performed in later division editing, a video camera capable of division editing corresponding to that can be provided.

  In addition, since the number of skips of the file number in the next scene can be specified by camera shooting information such as the change point of the exposure setting at the time of previous scene shooting, it can be edited later when moving outdoors or indoors during shooting. When it is desired to divide, it becomes a predictable number, and a video camera convenient for divided editing can be provided.

  Furthermore, since the file number between the file numbers of the previous scene and the subsequent scene is assigned to the file generated by the divided file even after being divided by the divided editing, the time series of the scene can be displayed to the user even after the divided editing. It is easy to grasp the lineup.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic configuration block diagram of an imaging apparatus to which an embodiment of the present invention is applied. Specifically, the imaging device 10 is a digital video camera, a digital still camera, or the like that uses a randomly accessible recording medium such as a memory card, an HDD, or a recordable optical disk as a moving image recording medium. However, a solid line indicates the flow of image data or audio data, and a broken line indicates a control signal.

  The imaging device 10 includes an imaging lens 12, an aperture 14, a CCD imaging device 16, a CDS (correlated double sampling) / AGC (automatic gain control) circuit 18, a digital signal processing circuit 20, a frame memory 22, a pixel number adjustment circuit 24, Data bus 26, microphone 28, amplifier 30, A / D converter 32, liquid crystal display (LCD) 34, LCD driving device 36, MPEG codec 38, video output terminal 40, NTSC encoder 42, recording medium 44, recording / reproducing device 46 A stream buffer 48, a USB terminal 50, and a USB controller 52.

  The imaging device 10 further includes an operation key 60, a main microcomputer (main microcomputer) 62, a RAM 64, an EEPROM 66, and a control bus 68 for transmitting control signals.

  The taking lens 12 forms an optical image of the subject on the image pickup surface of the CCD image pickup device 16. The aperture 14 adjusts the amount of light of the subject. The CCD image sensor 16 converts an optical image from the imaging lens 12 and the diaphragm 14 into an electric image signal. The CDS / AGC circuit 18 samples and holds the image signal from the CCD image pickup device 16, removes noise, and adjusts the signal level. The digital signal processing circuit 20 converts the image signal from the CDS / AGC circuit 18 from an analog format to a digital format, and performs known signal processing (for example, gamma correction, color balance adjustment, luminance / color separation) and the like in the camera. .

  The frame memory 22 temporarily stores digital image signals from the digital signal processing circuit 20 in the order of frames. The pixel number adjustment circuit 24 adjusts the number of pixels of the image data stored in the frame memory 22 to a predetermined number of pixels. The data bus 26 functions integrally with a DMA controller (not shown) and is used to transfer image data and audio data.

  The microphone 28 takes in surrounding sounds and converts them into electric sound signals. The amplifier 30 amplifies the audio signal from the microphone 28 to an appropriate level. The A / D converter 32 converts the analog output audio signal of the amplifier 30 into a digital signal.

  The liquid crystal display (LCD) 34 is driven by the LCD driving device 36 and displays an image according to image data (so-called camera image signal) from the pixel number adjusting circuit 24 at the time of photographing. At the time of reproduction, an image according to the image data from the MPEG codec 38 (so-called reproduction image data) is displayed. In this embodiment, a graphic-based GUI (Graphical User Interface) or a character-based CUI (Character-based User Interface) screen can be displayed on the screen of the LCD 34.

  The MPEG codec 38 compresses the image data from the pixel number adjustment circuit 24 and the audio data from the A / D converter 32 in accordance with the MPEG2 compression encoding method, and decompresses the compressed data reproduced from the recording medium 44. As other moving image compression methods, Motion JPEG, JPEG2000, MPEG4, and the like can be used.

  The NTSC encoder 42 converts an image signal displayed on the liquid crystal display 34 into an NTSC format analog signal and outputs the analog signal to the video output terminal 40. The recording / reproducing apparatus 46 records the compressed data by the MPEG codec 32 on the recording medium 44 and reads the compressed data recorded on the recording medium 44.

  The recording medium 44 is a random access recording medium such as a nonvolatile flash memory card, HDD, or DVD. The recording medium 44 stores files in a directory structure as shown in FIG. This directory structure will be described later.

  The recording / reproducing device 46 records the compressed data from the MPEG codec 38 on the recording medium 44 and reproduces the compressed data from the recording medium 44. The stream buffer 48 temporarily records and holds the compressed data from the MPEG codec 38 before recording it on the recording medium 44.

  The USB terminal 50 outputs data from the USB controller 52. The USB controller 52 outputs data designated by the main microcomputer 62, for example, compressed data reproduced from the recording medium 44, to the USB terminal 50.

  The operation key 60 is used to instruct the main microcomputer 62 of the operation mode of the imaging apparatus 10 and the recording destination, for example, the recording medium 44. Further, although not shown, the operation key 60 includes an imaging switch, a recording switch, a stop switch, and a reproduction switch, which are used in an imaging mode, a recording mode, and a reproduction mode, respectively. The operation key 60 includes a cross key and a determination key, which are used for various selection operations and determination operations.

  The main microcomputer 62 controls the entire imaging apparatus 10 according to the operation of the operation key 60. The main microcomputer 62 stores temporary data in the RAM 64. The EEPROM 66 is a non-volatile memory and stores management information (operations after automatic initialization, finalization, and setup) described later. The control bus 68 transmits a control signal from the main microcomputer 62 and a control signal from the operation key 60.

  A basic operation of imaging, recording and reproduction of the imaging apparatus 10 will be described. In the moving image camera mode, the photographic lens 12 forms an optical image of the subject on the imaging surface of the CCD image sensor 16. The CCD image sensor 16 outputs a subject image signal corresponding to the optical image on the imaging surface. The CDS / AGC circuit 18 removes noise of the image signal from the CCD image pickup device 16 and amplifies the image signal to a predetermined level. The digital signal processing circuit 20 converts the output image signal of the CDS / AGC circuit 18 into a digital signal, and sequentially stores it in the frame memory 22 after predetermined camera signal processing. The frame memory 22 outputs the image data to the pixel number adjustment circuit 24 in the recording order. The pixel number adjusting circuit 24 adjusts the number of pixels of the image data from the frame memory 22 and applies it to the LCD driving device 36 via the data bus 26. The LCD driving device 36 drives the liquid crystal display 34 in accordance with the output image signal of the pixel number adjusting circuit 24. Thereby, the user can confirm the range and composition of the subject.

  In the recording mode, the MPEG codec 38 compresses and encodes the image data from the pixel number adjustment circuit 24 and transfers the compressed image data to the recording / reproducing device 46. The recording / reproducing device 46 records the compressed image data on the recording medium 44. In this way, the compressed image data of the photographed image is stored in the recording medium 44.

  In the playback mode, the recording / playback device 46 reads the compressed image data of the designated image from the recording medium 44 and transfers it to the MPEG codec 38. The MPEG codec 38 decompresses the compressed image data from the recording / reproducing device 46 and restores the image data. The restored image data is applied to the liquid crystal display 34 via the LCD driving device 36. As a result, the reproduced image is displayed on the screen of the liquid crystal display 34.

  Here, with reference to FIG. 2, the directory structure of the recording medium 44 and the method of determining the file name will be described. FIG. 2 shows a directory structure of the recording medium 44.

  In FIG. 2, a folder SD_VIDEO for storing information relating to a moving image is placed directly under the root directory. Under the folder SD_VIDEO, a management information folder MNG_INFO that stores management information files and a program folder PRG001 that stores moving image data in units of programs are placed.

  In the management information folder MNG_INFO, a management data file MGR_DATA storing overall version information and text information, a program management file PRG_MGR storing information such as the total number of programs, playback time and attributes, and playlist management A playlist management file PLST_MGR for storing information is stored. Up to this point, it is the same as the conventional example (FIG. 9).

  Under the program folder PRG001, a stream file (MOV) for storing compressed moving image data and an object information file (MOI) for storing object information such as a time stamp are stored in pairs for each scene. However, in this embodiment, a discrete value is adopted in the 3-digit hexadecimal part of the file names of the stream file and the object information file. The file name generation rule will be described later. In the example shown in FIG. 2, the file name body excluding the extension portion is made into a string of characters such as MOV001, MOV005, MOV008,... In preparation for file division. The program information file (PGI) stores the number of scenes in one program as in the conventional example.

  In the SD-Video format, the number of scenes that can be stored in one program folder is limited to 99, and “xxx” in the body part “MOVxxx” of the file name is 99 in hex numbers from 001 to FFF. Can be used.

  The operation of this embodiment will be described with reference to FIGS. FIG. 3 is a flowchart of generation and recording of file names of video streams and object information of each scene. FIG. 4 is a diagram showing a video stream of each scene. In the flow shown in FIG. 3, the number of recorded scene divisions is quantitatively evaluated by the recording time, and the file number portion of the file name is jumped by an amount that can cover the number of divisions.

  First, when the user designates the moving image shooting mode with the mode dial or the power is turned on in the moving image shooting mode, the recording medium 44 is recognized, the recording scene management information is read (S1), and the scene is recorded. Whether or not is detected (S2). If no scene is recorded (S2), the file number N = 001 is set (S11).

  When a scene is recorded (S2), the management information of the latest recorded scene recorded immediately before is read, and the file number n in the file name is detected (S3). The recording time t (min) is detected in minutes from the latest recording scene management information (S4), and the file number N = t + n + 1 is set (S5).

  When the user presses the moving image shooting switch, recording is started (S6). Video stream file MOV + with file name including file number N (hexadecimal notation of N). The MOD is opened and the compressed data is written sequentially (S7).

  When the user presses the stop switch, the recording operation ends (S8), and the video stream file MOV + (N hexadecimal notation). The MOD is closed (S9). Related object information file MOV + (N hexadecimal notation). The MOI is opened, and object information such as a time stamp is stored and closed (S10). Thereby, recording of one scene is completed.

  The transition of the file name will be described with reference to the recording example shown in FIG. In the example shown in FIG. 4, three scenes are recorded, and the recording times of scenes 1, 2, and 3 are 3 minutes, 2 minutes, and 4 minutes, respectively.

  In the example shown in FIG. 4, since the scene 1 starts recording from the state where there is no recording scene, the file number N in the file name is 001, and the video stream file MOV001. MOD and object information file MOV001. The MOI is recorded as shown in FIGS.

For scene 2, since the recording time of scene 1 recorded immediately before is 3 minutes, t = 3, and since the file number of the file name is 001, n = 1. Therefore, the file number N of the file name for the scene 2 is
N = t + n + 1 = 3 + 1 + 1 = 5
Video stream file MOV005. MOD and object information file MOV005. The MOI is recorded.

For scene 3, since the recording time of scene 2 recorded immediately before is 2 minutes, t = 2, and since the file number of the file name is 005, n = 5. Therefore, the file number N of the file name for the scene 3 is
N = t + n + 1 = 2 + 5 + 1 = 8
Video stream file MOV008. MOD and object information file MOV008. The MOI is recorded.

  Incidentally, since the recording time of scene 3 is 4 minutes, the file number of the file name for the next scene 4 is 008 + 4 + 1 = 00D, and the file name of the video stream file is MOV00D. MOD, and the file name of the object information file is MOV00D. MOI.

  In the flowchart shown in FIG. 3, it is assumed that the scene can be divided in about one minute. When division in shorter time units is assumed, the recording time t may be evaluated in smaller time units. Alternatively, a maximum value of t may be set, and when the recording time of the scene recorded immediately before exceeds the maximum time, the file number of the next scene may be determined using the maximum value.

In the example of file names shown in FIGS. 2 and 4, there are four file names between scene 1 and scene 2. Therefore, even when the scene 1 is divided into four at maximum, the file numbers of these divided files are sequentially increased without including files of other scenes in the middle. An example in which the scene 1 is divided into two is shown in FIG. In FIG. 5, the scene 1 is divided at the second position. Along with the division, stream file MOV001. MOD and object information file MOV001. The MOI is also divided, and the same file name is used before the division point. As the file name of the file after the division point, the file number prorated at the division position with respect to the recording time of the scene 1 is set as the file number of the file name of the scene before and after the division. In the example shown in FIG. 5, the file number of scene 1 is 001 and the file number of scene 2 is 005.
(2/3) × ((005-001) -001) + 1 = 003
And the stream file after the dividing point has MOV003. MOD, object information file contains MOV003. A file name of MOI is given.

  The number of recording scene divisions can be quantified not only by recording time but also by file size. This is because the expected file size of the shortest scene is usually known in advance. Therefore, in the flow shown in FIG. 3, the file number N included in the file name of the new file may be determined using the file size instead of the recording time. For example, the expected division number t of the file size is set in units of 100 MB, and the file number N is determined.

  Further, when the file number advances under the above-mentioned various conditions, the number of advancement of the file number may be limited until the file number is actually used in the next scene.

  If there is no file number that can be used as the file number portion of the file name between successive scenes, scene division may be prohibited.

  In the first embodiment, attention is paid to the recording time or file size of the video stream, but in the second embodiment, attention is paid to the exposure amount of the video stream. For example, when the exposure fluctuates greatly, it is considered that the possibility of editing is high, and in particular, it is considered that an underexposed or overexposed part is often deleted.

  FIG. 6 is a flowchart of file name generation and recording of a video stream according to the second embodiment. FIG. 7 is a schematic diagram showing an example of the relationship between the video stream and the exposure amount. FIG. 8 is a diagram showing the directory structure and file arrangement of the video stream for the example shown in FIG.

  In the flow shown in FIG. 6, steps S21 to S23 and S26 to S31 are the same as steps S1 to S3 and S6 to S11 in FIG. 3, and the part (S24, S25) for determining the file number N is shown in FIG. The float shown in 3 is different.

  First, when the user designates the moving image shooting mode with the mode dial or the power is turned on in the moving image shooting mode, the recording medium 44 is recognized, the recording scene management information is read (S21), and the scene is recorded. Whether or not is detected (S12). If no scene is recorded (S22), the file number N = 001 is set (S31).

  When a scene is recorded (S22), the latest recorded scene management information is read, and the file number n in the file name is detected (S23). The number x of EV value changes is detected for the latest recorded scene (S24), and the file number N = t + n + 1 is set (S25). The EV value change count x is calculated, for example, by the number of times the EV value changes by 5 or more in 10 seconds. Details of the operation of step S24 will be described later.

  When the user presses the moving image shooting switch, recording is started (S26). Video stream file MOV + with file name including file number N (hexadecimal notation of N). The MOD is opened, and the compressed data is written sequentially (S27).

  When the user presses the stop switch, the recording operation ends (S28), and the video stream file MOV + (N hexadecimal notation). The MOD is closed (S29). Related object information file MOV + (N hexadecimal notation). The MOI is opened, and object information such as a time stamp is stored and closed (S30). Thereby, recording of one scene is completed.

  The operation in step S24 will be specifically described. The EV value is a numerical value indicating the brightness of the subject and depends on the shutter speed and the aperture value at the time of shooting. When the shutter speed is 1 second and the aperture value F is 1.0, EV = 0. The value increases by 1 each time the shutter speed advances one step in the slow direction or the aperture value advances one step toward the small aperture side. For example, when the shutter speed is 1/2 second and the aperture value F is 1.0, EV = 1. EV = 1 even when the shutter speed is 1 second and the aperture value F is 1.4. When the shutter speed is 1/2 second and the aperture value F is 1.4, EV = 2. When the shutter speed is 1/60 and the aperture value F is 4, EV = 10 because the shutter speed is 6 steps higher than EV = 1 and the aperture value is open 4 steps.

  In this embodiment, the EV value per second is recorded in the object information file during shooting. In step S24, a point where the EV value has changed by 5 or more in any 10 seconds is searched from the object information file of the latest recorded scene, and the number of points is stored in the variable x. In normal shooting, the EV value does not vary so much, but if the photographer makes some movements such as going in and out of the room or vice versa while continuing shooting, the EV value varies greatly.

  FIG. 7 shows an example of recording three scenes. FIG. 7 shows the recording of the scene and the temporal change of the EV value in time series. There are two change points where the EV value changes by 5 or more per 10 seconds in scene 1, there is one change point in scene 2, and there is no change point in scene 3.

  In the example shown in FIG. 7, since the scene 1 is the first scene, the file number N is 001, and the video stream file MOV001. MOD and object information file MOV001. The MOI is recorded.

  When scene 2 is to be recorded, since there are two EV value change points in scene 1, x = 2, file number N = n + x + 1 = 001 + 2 + 1 = 004, and the file name of the video stream file is MOV004. MOD, and the file name of the object information file is MOV004. MOI.

  Since there is one change point in the scene 2, the file number N for the scene 3 is 004 + 1 + 1 = 006, and the file name of the video stream file is MOV006. MOD, and the file name of the object information file is MOV006. MOI.

  Since there is no EV value change point in scene 3, the file number N for scene 4 (not shown) is 006 + 1 = 007, and the file name of the video stream file is MOV007. MOD, and the file name of the object information file is MOV007. MOI.

  As a result, the video stream files MOV001. MOD, MOV004. MOD, MOV006. MOD and object information file MOV001. MOI, MOV004. MOI, MOV006. The MOI is stored. In this example, even if the video stream of scene 1 is divided up to three, the correspondence between the time order and the file name order can be maintained.

  If the maximum value of x is set and the number of exposure changes of the scene recorded immediately before exceeds the maximum value, the file number of the next scene may be determined using the maximum value.

  When the recorded scene is divided, the file number is determined according to the recording time or the file size for the file after the dividing point, as in the first embodiment.

  In this embodiment, the file number used for shooting the next scene is increased by one for each change point of the EV value that is equal to or higher than the constant change rate of the previous scene. The color temperature by the balance detection or the sound level from the microphone may be recorded, and the file number used in the shooting of the next scene may be increased by the number of changes of the color temperature or the sound level more than a certain change rate. For example, if there is a change of 2000 ° K or more within 10 seconds, it is counted as one change, and the file number of the next scene is increased by that number. In the case of the audio level, the maximum level is set to 0 dB, and the number of times when the audio level becomes, for example, −30 dB or less is counted, and the file number of the next scene is increased by that number.

  Further, when the file number advances under the above-mentioned various conditions, the number of advancement of the file number may be limited until the file number is actually used in the next scene.

  Furthermore, when the file number is not given to the subsequent file generated by dividing the scene, such as when the difference between the file number of the previous scene and the file number of the next scene is 001, the divided editing is performed. It is good also as a structure to prohibit.

1 is a block diagram of a schematic configuration of an imaging apparatus to which an embodiment of the present invention is applied. It is an example of the directory structure and file arrangement of the recording medium 44. 10 is a flowchart of file name generation and recording for generating a file number according to recording time. It is a schematic diagram which shows the video stream of scenes 1, 2, and 3. FIG. In the example shown in FIG. 4, it is an example of dividing the video stream of scene 1. 10 is a flowchart of file name generation and recording for generating a file number based on the number of EV value changes. It is a schematic diagram which shows an example of the relationship between exposure amount and a video stream. It is a figure which shows the example of a directory structure of a video stream and file arrangement | positioning with respect to the example shown in FIG. It is a schematic diagram of a conventional directory structure and file arrangement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Imaging device 12 Shooting lens 14 Aperture 16 CCD imaging device 18 CDS / AGC circuit 20 Digital signal processing circuit 22 Frame memory 24 Pixel number adjustment circuit 26 Data bus 28 Microphone 30 Amplifier 32 A / D converter 34 Liquid crystal display (LCD)
36 LCD drive circuit 38 MPEG codec 40 Video output terminal 42 NTSC encoder 44 Recording medium 46 Recording / playback device 48 Stream buffer 50 USB terminal 52 USB controller 60 Operation key 62 Main microcomputer 64 RAM
66 EEPROM
68 Control bus

Claims (11)

Recording means for recording image data on a recording medium in accordance with a predetermined file format;
A series of moving image data recorded on the recording medium from the start of recording to the stop of recording is managed as a single moving image file, and a file name including a number is assigned to the moving image file. Management means to perform,
The management means adds a number obtained by adding a number according to a predetermined condition relating to the moving image file of the first scene to the number of the moving image file of the first scene, and the moving image of the first scene A recording apparatus, characterized in that the recording apparatus adds the second scene to the moving image file to be recorded after the image file is recorded.   The recording apparatus according to claim 1, wherein the predetermined condition is a recording time of the first scene.   The recording apparatus according to claim 1, wherein the predetermined condition is a file size of a moving image file of the first scene. An imaging means for outputting the moving image data;
The imaging means has automatic exposure adjustment means for automatically adjusting the aperture and shutter speed according to the brightness of the subject,
2. The predetermined condition is the number of times that the amount of change in brightness of the subject detected by the automatic exposure adjustment unit during the first scene recording becomes a predetermined value or more. 4. The recording apparatus according to any one of items 3. An imaging means for outputting the moving image data;
The imaging unit includes an automatic white balance adjustment unit that detects the color temperature of the light source and automatically adjusts the white balance of the captured image;
4. The predetermined condition is a portion where a change amount of the color temperature detected by the white balance adjusting means during the first scene shooting is a predetermined amount or more. The recording apparatus according to claim 1. The recording means further records the input audio data together with the moving image data,
The predetermined condition is that the amount of change in the level of the audio data input during the recording of the first scene is greater than or equal to a predetermined value, or the audio level is less than or equal to a predetermined value. The recording apparatus according to claim 1.   Corresponding to the moving image file, a management information file recording management information for recording time or file management is generated, and having a file name having the same number as the number assigned to the moving image file, The recording apparatus according to claim 1, wherein the moving image file and the management information file are managed as a set.   When the number determined according to the predetermined condition exceeds a predetermined maximum value, the management means sets a number obtained by adding the maximum value to the moving image file number of the first scene. The recording apparatus according to claim 1, wherein the recording apparatus is attached to the second moving image file. When the management unit divides the moving image file of the first scene according to the division instruction in accordance with a division instruction to divide one moving image file into two files, two moving images generated after the division are generated. The same file name as the original file name before the division is given to the file of the previous part of the image file, and the number of the moving image file before the division and the moving image of the next scene are assigned to the file of the rear part. The recording apparatus according to claim 1, wherein numbers between file numbers are assigned.   The management means, based on the division position in the first moving image file before dividing, the difference between the number of the moving image file of the first scene and the number of the moving image file of the second scene, The recording apparatus according to claim 9, wherein a number to be assigned to the subsequent file is determined.   When the difference between the number of the moving image file of the first scene and the number of the moving image file of the second scene is 1, division editing of the moving image file of the first scene is prohibited. The recording apparatus according to claim 9 or 10.

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