JP2005328154A - Recording apparatus, file dividing method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording apparatus, a file dividing method, and a program capable of dividing a file at a position intended by a photographer and creating the file in a form easily used for editing. <P>SOLUTION: First the recording apparatus records video data outputted from an imaging element 101 to a first file provided to a recording medium 110. When a division instruction section 111 receives a division instruction input from a user during photographing by the imaging element 101, the recording apparatus records video data outputted from the imaging element 101 after receiving the division instruction, to a second file different from the first file provided to the recording medium 110. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recording apparatus, a file dividing method, and a program, and in particular, a recording apparatus that records video data obtained by a photographing unit on a randomly accessible recording medium, a file dividing method applied to the recording apparatus, and The present invention relates to a program for causing a computer to execute the file dividing method.

  Some conventional video recording / reproducing apparatuses record various related information related to the video data together with the captured video data at the time of shooting (see, for example, Patent Document 1).

  That is, an index area for recording various related information is provided on the video recording medium, and the video data is recorded on the video recording medium in response to the depression of the shutter switch, and the video data is stored in the index recording area in the video recording medium. The address of the recorded position, the video data length, and related information of the video data are recorded.

  In addition, there is a type in which a user can perform scene division by image analysis on already captured data during editing.

  FIG. 9 is a block diagram showing a configuration of a conventional video recording / reproducing apparatus.

  In FIG. 9, reference numeral 101 denotes an image sensor, which converts a subject image incident on a lens into an electric signal to obtain digital image data. A camera signal processing unit 102 performs signal processing such as white balance on the digital image data from the image sensor 101. An image compression / decompression processing unit 103 performs image compression processing on the signal from the camera signal processing unit 102 during recording, and performs decompression processing of data recorded on the recording medium 110 during reproduction. The compression here is mainly performed by compression by intra-screen (spatial) correlation and / or compression by inter-screen (temporal) correlation.

  An output processing unit 104 converts the signal-processed data output from the camera signal processing unit 102 at the time of shooting and the data expanded by the image compression / decompression processing unit 103 into an external output signal or display data. Reference numeral 105 denotes a display unit such as a viewfinder or a liquid crystal panel, which displays captured images and reproduced images. A recording / playback processing unit 106 writes and reads compressed data to and from the recording medium 110. Reference numeral 107 denotes an optical system control unit which controls the focus, the diaphragm, and the like. Reference numeral 108 denotes a system controller that performs state management and execution processing control of each processing unit. Reference numeral 109 denotes an operation unit, which includes a main body button / switch or a remote control for the user to instruct the apparatus to execute / stop processing such as shooting start / end. Reference numeral 110 denotes a recording medium, which is often a magnetic tape. Here, a randomly accessible magnetic disk / optical disk is used. In the index area 911 in the recording medium 110, the position address of the video data, the video data length, and the like are recorded together with the video data.

As for the audio processing unit, although not shown here, an audio signal input from a microphone or the like is converted into digital audio data, compressed, and recorded in the same manner as image data. Necessary output processing is performed during reproduction.
JP-A-8-294080 (page 9, FIG. 2)

  By the way, in the shooting of various events and lectures, long-time continuous shooting (panning shot) is performed and editing may be performed after shooting. In this case, the cut (clip, file) used for editing is long. There was a problem that editing work was difficult.

  That is, in the conventional video recording / playback apparatus, when only one index information is given to a long-time continuous file, cut editing cannot be performed efficiently.

  Also, when performing cut editing, even if video search is performed based on index information, etc., the index image position is not necessarily the cut-in position at the time of editing, so the edit cut-in and cut-out positions are set. It was necessary to recut out.

  Furthermore, the method of performing scene division by image analysis at the time of editing after shooting has a drawback that the intention of the photographer is not necessarily reflected in the dividing position.

  The present invention has been made in view of such problems, and enables recording of a file at a position intended by the photographer and enables creation of a file in a form that is easy to use for editing. An object is to provide an apparatus, a file dividing method, and a program.

  In order to achieve the above object, according to the first aspect of the present invention, in the recording apparatus for recording the video data obtained by the photographing means on a randomly accessible recording medium, the video data obtained by the photographing means is Recording means for recording on the recording medium, division instruction means for arbitrarily instructing division of video data to be recorded on the recording medium, and video data output from the photographing means in response to an instruction to start recording Video stored in the first file and recorded on the recording medium, and output from the photographing unit after the division instruction in accordance with an instruction from the division instruction unit during recording of the video data of the first file Control means for controlling the recording means to store data in a second file different from the first file and record the data in the recording medium. Recording apparatus is provided to symptoms.

  According to a twelfth aspect of the present invention, in the file dividing method applied to a recording apparatus for recording video data obtained by the photographing means on a randomly accessible recording medium, the video data obtained by the photographing means. Are recorded on the recording medium, a division instruction step for arbitrarily instructing division of video data to be recorded on the recording medium, and video data output from the photographing unit in response to a recording start instruction Is stored in the first file and recorded on the recording medium, and is output from the photographing unit after the division instruction in response to an instruction by the division instruction step during recording of the video data of the first file. The recording step is controlled so that video data is stored in a second file different from the first file and recorded on the recording medium. File splitting method characterized by a control step of is provided.

  Furthermore, a program for causing a computer to execute the file dividing method is provided.

  According to the present invention, in the recording apparatus for recording the video data obtained by the photographing unit on the recording medium that can be randomly accessed, the video data obtained by the photographing unit is recorded on the recording medium. When receiving an instruction to divide the video data to be recorded on the recording medium, the video data output from the photographing unit is stored in the first file and recorded on the recording medium in response to an instruction to start recording. In addition, in response to the division instruction during recording of the video data of the first file, the video data output from the photographing unit after the division instruction is stored in a second file different from the first file. And recorded on the recording medium.

  As a result, the file can be divided at the position intended by the photographer, and the file can be created in a form that is easy to use for editing. In other words, the recording file can be divided (clip creation) for cut-in / out designation at the time of editing without interrupting recording at the time of shooting. Opened. Furthermore, by performing the divided video recording in a general-purpose format, it becomes easy to reuse the file for video search and editing without adding special processing in the reproduction environment.

  In addition, in the file division process at the time of division designation, the end part data of the finished file is added to the top part of the new file and duplicated recording is performed, so that clips can be created without being aware of cut-in / out in the division operation Furthermore, since the additional data is past data, a margin for division instruction operation delay and a scene change in editing is included, so that editing can be performed efficiently.

  Furthermore, it is possible to perform continuous reproduction with the overlapping portion skipped, and reproduction can be performed without being aware of the overlapping portion.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a video recording / reproducing apparatus according to the first embodiment of the present invention. In FIG. 1, the same components as those of the conventional video recording / reproducing apparatus shown in FIG. 9 are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 1, reference numeral 111 denotes a division instruction unit provided in the operation unit 109, which includes buttons provided separately from the shooting start / end buttons that constitute the operation unit 109 in the related art. Reference numeral 112 denotes an overlap setting unit provided in the system controller 108, which holds an overlap time set by the user. A division processing unit 113 connected to the system controller 108 and the recording / playback processing unit 106 performs file division processing in accordance with a division instruction given by the user to the division instruction unit 111. That is, the recording / playback processing unit 106 is instructed to close the currently written file and create a new file, and the previous file corresponding to the duplication time held in the duplication setting unit 112. Instructed to write the video data traced back from the end of the file as an overlapped portion at the beginning of the current file.

  Reference numeral 114 denotes a buffer. Since the file division processing is performed, there is a possibility that a delay occurs in the writing processing of the video data to the recording medium 110. In order to prevent the video recording on the recording medium 110 from being interrupted, a buffer 114 is provided. Temporarily store the delayed compressed data.

  Reference numeral 115 denotes a recorded video from the start of shooting to the end of shooting stored in the recording medium 110, which is divided into a plurality of files. The hatched portion is the overlap between the previous file and the current file.

  The overlap time (for example, t) set by the user and held in the overlap setting unit 112 should be long in consideration of the delay of the division instruction by the user in the important scene, while short in consideration of the buffer amount and characteristics of the apparatus. Better. Furthermore, it can be considered that a few seconds of scene change time applied during editing is also effective. Note that when t = 0, there is no overlapping portion, and only division processing is performed.

  FIG. 2 is a diagram showing one recorded video from the start of shooting to the end of shooting and a plurality of divided files.

  In FIG. 2, 201 is a recorded video, and 202, 204, 206, and 208 are files (clips) created by dividing a file storing the recorded video 201 according to a division instruction by a user. is there. Reference numerals 203, 205, and 207 denote overlapping portions, which are copies of video data that are traced back by the overlapping time t from the respective ends of the files 202, 204, and 206, and are added to the leading portions of the files 204, 206, and 208, respectively. .

  FIG. 3 is a flowchart showing a procedure of video data recording processing including file division processing performed by the video recording / playback apparatus according to the first embodiment. This video data recording process is started by a shooting (recording) start instruction to the operation unit 109 by the user.

  In step S301, in order to start recording video data, a new file (for example, the file 202 in FIG. 2) is created on the recording medium 110, and in step S302, the recorded video data is written and recorded in the file.

  In step S303, it is determined whether or not the user has instructed the photographing (recording) end to the operation unit 109. If so, the process proceeds to step S304 to close (close and close) the file being written and recorded. ) End recording. On the other hand, if the photographing (recording) end instruction has not been issued, the process proceeds to step S305, where it is determined whether or not the user has given a division instruction to the division instruction unit 111.

  As a result, if no division instruction is given, the process returns to step S302 to continue recording video data. On the other hand, if a division instruction has been issued, the process proceeds to step S306, where the division processing unit 113 closes the file being recorded (for example, the file 202 in FIG. 2). In step S307, a new file (for example, 203 and 204 in FIG. 2) is created to continuously record the photographed data.

  Here, assuming that the elapsed time (continuous shooting recording time) from the shooting start time of one recording video (for example, the recording video 201 in FIG. 2) is T, it overlaps with the continuous shooting recording time T in step S308. Comparison with the overlap time t held in the setting unit 112 is performed, and when the continuous shooting recording time T is equal to or shorter than the overlap time t, that is, when the time t has not yet elapsed from the shooting start time, the process proceeds to step S309. The overlap time is set to T. On the other hand, if the continuous shooting recording time T is longer than the overlap time t, the process proceeds to step S310.

  In step S310, a closed file (for example, file 202 in FIG. 2) is searched for a position (duplicate head) that is back by the overlap time t from the end, and in step S311, the overlap time t from this position to the end is searched. The video data is copied from the closed file and written to the new file created in step S307 (for example, the overlapping portion 203 in FIG. 2).

  On the other hand, in order to temporarily record video data (for example, video data to be written to the file 204 in FIG. 2) input during the processing from step S306 to step S311, the processing from step S306 to step S311 is performed. In parallel, step S312 and step S313 are executed simultaneously.

  In step S312, the video data input after the division instruction is temporarily recorded in the buffer 114. In step S313, the video data temporarily recorded in the buffer 114 is written in the new file created in step S307 (for example, the file shown in FIG. 2). 204).

  However, the time required for the file close process and the new file creation process and the search process for the beginning of the duplicate part depends on the video data write unit to the recording medium 110 and the bit rate (bps) of the compressed video / audio data. If the time interval for writing data to the determined recording medium 110 is sufficiently short, steps S312 and S313 can be omitted, and in this case, the buffer 114 is also unnecessary. Note that the storage capacity required for the buffer 114 can be obtained from these relationships.

  As described above, it is possible to divide a file at the position intended by the photographer at the time of shooting and recording, and by recording duplicate video data at the time of file division, it is easy to use for editing Can be created.

  In the first embodiment, the buffer 114 is provided between the image compression / decompression processing unit 103 and the recording / playback processing unit 106. However, the storage capacity of the buffer 114 is sufficient for the file division processing. Instead, the buffer 114 may be provided between the recording / reproduction processing unit 106 and the recording medium 110 instead. As a result, the overlapping portion of the video data can be buffered to the buffer 114 at the same time as recording to the recording medium 110, and the overlapping portion is copied from the buffer 114 without searching for the overlapping portion of the file closed when the division instruction is given. Is possible. In addition, the buffer 114 can use a free area in the recording medium 110.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  Since the configuration of the second embodiment is basically the same as the configuration of the first embodiment, in the description of the second embodiment, the same parts as the configuration of the first embodiment are used. Are denoted by the same reference numerals, and the description of the first embodiment is used, and only different portions will be described.

  When editing video data such as lectures and talks, audio breaks are often selected as cut positions. Therefore, in the second embodiment, when a division instruction is issued from the user, the state where the audio level is equal to or lower than a predetermined value is traced back to the position where the predetermined time continues and the position from which the division instruction is issued is overlapped. Try to be a part.

  In the video recording / playback apparatus shown in FIG. 1 used by the second embodiment, the audio-related component block is not shown, but in reality, the audio signal input from the microphone or the like is the same as the image data. After being converted into digital audio data, it is compressed and recorded. Necessary output processing such as decompression is performed during reproduction.

  In the duplication setting unit 112 in the second embodiment, a predetermined audio level v and a predetermined time s are set by the user.

  FIG. 4 is a diagram illustrating one recorded video from the start of shooting to the end of shooting, the corresponding recorded audio, and a plurality of divided files according to the second embodiment.

  In the figure, 401 is one recorded video from the start of shooting to the end of shooting, and 409 is recorded audio corresponding to this recorded video 401. Reference numerals 402, 404, 406, and 408 denote files created by dividing a file that stores the recorded video 401 and the recorded audio 409 according to a division instruction from the user. Reference numerals 403, 405, and 407 denote overlapping portions, which are copies of the data at the end portions of the files 402, 404, and 406, respectively, and are added to the head portions of the files 404, 406, and 408, respectively.

  The video data recording process performed by the video recording / reproducing apparatus in the second embodiment is basically the same as the video data recording process in the first embodiment shown in FIG. 3, but the second embodiment. Then, the processing of steps S308 to S310 in FIG. 3 is different from that of the first embodiment. That is, in the second embodiment, the processes in steps S308 and S309 are not necessary, and the process in step S310 is as follows.

  In step S310 in the second embodiment, a position where the state in which the audio level is equal to or lower than the predetermined audio level v continues for a predetermined time s in the recorded audio 409 is searched retroactively from the end of the closed file. The part up to the position where the division instruction is given is made an overlapping part.

  In the second embodiment, as described above, the same processing as in the first embodiment is performed except for the processing in steps S308 to S310 in FIG.

  In the second embodiment, in step S310, when it is not possible to detect a position where the sound level of the recorded sound 409 is lower than or equal to the predetermined sound level v for a predetermined time s, the first embodiment. Alternatively, the method may be switched to a method of searching for a position that is back by the overlap time t from the end of the closed file.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.

  Since the configuration of the third embodiment is basically the same as the configuration of the first embodiment, in the description of the third embodiment, the same parts as the configuration of the first embodiment are used. Are denoted by the same reference numerals, and the description of the first embodiment is used, and only different portions will be described.

  In the third embodiment, compression by inter-screen correlation is performed in the image compression / decompression processing unit 103, and a setting is made by the user to set the intra picture to the head of the overlapped portion by the user. If there is a division instruction from the user, the intra picture is searched retroactively from the video data position where the division instruction is given, and the video data from the detected intra picture to the position where the division instruction is given is copied. Make it an overlapping part.

  FIG. 5 is a diagram showing one recorded video from the start of shooting to the end of shooting, the picture type configuration of the recorded video, and a plurality of divided files according to the third embodiment. Here, it is assumed that an MPEG (Moving Picture Experts Group) system is used as a compression method based on correlation between screens.

  In FIG. 5, reference numeral 501 denotes one recorded video from the start of shooting to the end of shooting, and 501 a is a picture type component of the recorded video 501. 502 is an intra (I) picture (intra-frame encoded image), 503 is a bidirectional (B) prediction encoded image, and 504 is an inter-frame prediction (P) encoded image. Reference numerals 505 and 507 denote files created by dividing a file storing the recorded video 501 in accordance with a division instruction from the user. Reference numeral 506 denotes an overlapping portion, which is a copy of data at the end portion of the file 505 and is added to the head portion of the file 507.

  When there is a division instruction from the user, the division processing unit 113 in the third embodiment searches for an intra (I) picture retroactively from the end of the closed file, and the division instruction is issued from the detected intra picture. A copy of the video data up to a certain position is set as an overlapping portion 506.

  Note that the intra picture here does not necessarily need to be detected first when going back from the end of the closed file, and the intra picture detected a plurality of times may be adopted. .

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described.

  Since the configuration of the fourth embodiment is basically the same as the configuration of the first embodiment, in the description of the fourth embodiment, the same parts as the configuration of the first embodiment are used. Are denoted by the same reference numerals, and the description of the first embodiment is used, and only different portions will be described.

  In the fourth embodiment, the image compression / decompression processing unit 103 and the recording / reproduction processing unit 106 perform reproduction / decompression simultaneously with compression / recording, and reverse reproduction is possible in the reproduction. . For example, when the division instruction unit 111 is a button, reverse playback is performed when the button is kept pressed after the division instruction. When this button is released, reverse playback is stopped. In addition, it is assumed that the user has set the overlap setting unit 112 to search for the beginning of the overlap portion by reverse playback. That is, the user can arbitrarily select the head of the overlapping portion while viewing the reversely reproduced video.

  FIG. 6 is a flowchart showing a procedure of video data recording processing including file division processing performed in the video recording / playback apparatus according to the fourth embodiment. Since this video data recording process is basically the same as the video data recording process in the first embodiment shown in FIG. 3, the same steps are denoted by the same step numbers and description thereof is omitted. .

  In the fourth embodiment, the processes in steps S608 to S610 are different from the processes in steps S308 to S310 in the first embodiment shown in FIG.

  In step S608, if the setting by the overlap setting unit 112 is reverse playback, reverse playback is started from the end of the file closed in step S306, and the output processing unit 104 converts the captured image and the reverse playback image into a picture-in. The images are combined by a technique such as a picture and displayed on the display unit 105.

  In step S609, it is determined whether or not reverse playback should be ended depending on whether or not the button pressing operation of the division instruction unit 111 has ended. If the pressing operation is continued, the process returns to step S608 to continue the reverse reproduction. On the other hand, if the button pressing operation is completed, the process proceeds to step S610.

  In step S610, the reverse playback stop position is set to the beginning of the overlapping portion.

  In the fourth embodiment, as described above, the same processing as in the first embodiment is performed except for the processing in steps S608 to S610 in FIG.

  In the fourth embodiment, reverse playback is performed to search for the beginning of the overlapping portion. Instead, reverse playback and reverse skip playback are performed to search for the beginning of the overlapping portion. You may do it.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described.

  Since the configuration of the fifth embodiment is basically the same as the configuration of the fourth embodiment, the configuration of the fourth embodiment is used in the description of the fifth embodiment.

  In the fifth embodiment, the reverse processing image in the fourth embodiment is displayed on the external device by the output processing unit 104. Then, a user who can view the reverse reproduction image displayed on the external device can be remotely operated for the division instruction unit 111. As a result, a user other than the photographer can issue a file division instruction.

[Sixth Embodiment]
Next, a sixth embodiment of the present invention will be described.

  Since the configuration of the sixth embodiment is basically the same as the configuration of the first embodiment, in the description of the sixth embodiment, the same parts as the configuration of the first embodiment are used. Are denoted by the same reference numerals, and the description of the first embodiment is used, and only different portions will be described.

  FIG. 7 is a diagram showing a file recording configuration of a recording medium according to the sixth embodiment.

  In the sixth embodiment, a process of collecting new files (steps S301 and S307 in FIG. 3) created by the division processing unit 113 into the same directory is performed. That is, in the first new file creation (step S301 in FIG. 3), a new directory is created on the recording medium 715, and a folder 712 containing a plurality of files 704 to 706 related to the recorded video 701 is created in the directory. I do. In the second new file creation (step S307 in FIG. 3), a folder 713 containing the file 707 related to the recorded video 702 is created in the same directory. In the third new file creation (step S307 in FIG. 3), a folder 714 containing a plurality of files 708 to 711 related to the recorded video 703 is created in the same directory.

  Note that if the first image in each file is an index screen (thumbnail image) and the list of files in the recording medium 715 can be listed, for example, if the recording medium 110 is in a personal computer environment, the file is identified. It can be done easily.

  Further, the file accommodation configuration in which the plurality of recorded videos are accommodated in one directory is applicable to any of the first to fifth embodiments.

[Seventh Embodiment]
Next, a seventh embodiment of the present invention will be described.

  Since the configuration of the seventh embodiment is basically the same as the configuration of the first embodiment, in the description of the seventh embodiment, the same parts as the configuration of the first embodiment are used. Are denoted by the same reference numerals, and the description of the first embodiment is used, and only different portions will be described.

  In the seventh embodiment, the link information of the corresponding file and the information regarding the duplication time are recorded at the head of each file.

  FIG. 8 is a diagram illustrating a file format according to the seventh embodiment. (A) shows the recording format and examples of link information and duplication time information inserted at the beginning of each file, and (B) shows examples of files.

  In FIG. 8A, reference numeral 801 denotes a recording format of link information and duplication time information. The file name of the own file, pointer information of the previous and subsequent files to be linked, and information for specifying the duplicate portion included in the own file It consists of overlapping time as In the example of the file shown in FIG. 8B, the reproduced image (recorded video) 810 is divided into files 805, 807, and 809, and an overlapping portion 806 of the overlapping time t1 is added to the head of the file 807, and the overlapping time t2 Are added to the top of the file 809.

  When the actual example of the file shown in FIG. 8B is applied to the recording format shown in FIG. 8A, the file 805, the overlapping portion 806 of the file 807, and the overlapping portion 808 of the file 809 should be inserted at the beginning. The files are inserted files 802 to 804. For example, “P (file 2)” is a pointer indicating the start position of the entire file 807 including the overlapping portion 806 in the storage medium 110.

  Based on link information and duplication time information as illustrated in FIG. 8A, it is possible to remove duplicate portions from a plurality of recorded files and reproduce them together with original continuous information.

  Note that, in the recording format shown in FIG. 8A, duplication information represented as information for specifying the duplication portion is recorded, but instead, the memory size of the duplication portion may be recorded. .

  Moreover, the structure which records said link information and duplication time information for every file is applicable to any of said 1st thru | or 6th embodiment.

[Other Embodiments]
The object of the present invention is to supply a storage medium storing software program codes for realizing the functions of the above-described embodiments to a system or apparatus, and a computer (or CPU, MPU, etc.) of the system or apparatus. Is also achieved by reading and executing the program code stored in the storage medium.

  In this case, the program code itself read from the storage medium realizes the novel function of the present invention, and the storage medium and program storing the program code constitute the present invention.

  The storage medium for supplying the program code is, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW. DVD + RW, magnetic tape, nonvolatile memory card, ROM, etc. can be used. Alternatively, the program is supplied by downloading from another computer or database connected to the Internet, a commercial network, a local area network, or the like.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (Operating System) running on the computer based on the instruction of the program code. Includes a case where the functions of the above-described embodiments are realized by performing part or all of the actual processing.

  Further, after the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. This includes the case where the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows the structure of the video recording / reproducing apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows one recording image | video from imaging | photography start to imaging | photography end, and the some divided | segmented file. It is a flowchart which shows the procedure of the video data recording process containing the file division | segmentation process performed with the video recording / reproducing apparatus in 1st Embodiment. It is a figure which shows one recorded image | video from the imaging | photography start to the completion | finish of imaging | photography in 2nd Embodiment, the corresponding recording audio | voice, and the some divided | segmented file. It is a figure which shows one recorded image | video from the imaging | photography start in the 3rd Embodiment to the completion | finish of imaging | photography, the picture type structure of this recording video | video, and the some divided | segmented file. It is a flowchart which shows the procedure of the video data recording process containing the file division | segmentation process performed with the video recording / reproducing apparatus in 4th Embodiment. It is a figure which shows the file recording structure of the recording medium in 6th Embodiment. It is a figure which shows the file form in 7th Embodiment. It is a block diagram which shows the structure of the conventional video recording / reproducing apparatus.

Explanation of symbols

101... Imaging element (imaging means)
DESCRIPTION OF SYMBOLS 102 ... Camera signal processing part 103 ... Image compression / decompression processing part 104 ... Output processing part 105 ... Display part 106 ... Recording / reproduction | regeneration processing part (recording means)
DESCRIPTION OF SYMBOLS 107 ... Optical system control part 108 ... System controller 109 ... Operation part 110 ... Recording medium 111 ... Division instruction | indication part (division instruction | indication means)
112: Duplicate setting unit 113 ... Division processing unit (control means)
114 ... Buffer 115 ... Recorded video

Claims (24)

In a recording apparatus for recording video data obtained by a photographing means on a randomly accessible recording medium,
Recording means for recording video data obtained by the photographing means on the recording medium;
Division instruction means for arbitrarily instructing division of video data to be recorded on the recording medium;
In response to an instruction to start recording, the video data output from the photographing unit is stored in the first file and recorded on the recording medium, and the division instruction unit during recording of the video data of the first file In response to the instruction, control for controlling the recording means to store the video data output from the photographing means after the division instruction in a second file different from the first file and record it in the recording medium And a recording device.   The control means further adds a portion near the end of the video data recorded in the first file as an overlapping portion to the head of the video data output from the photographing means after the division instruction, The recording apparatus according to claim 1, wherein the recording unit is controlled to store in the second file.   The recording apparatus according to claim 2, further comprising a determining unit that determines a period of the overlapping portion.   The recording apparatus according to claim 3, wherein the determination unit determines the overlap period based on a time designated by a user. The recording means further stores and records audio data related to the video data in the first and second files,
The determination means detects the position where the state in which the sound level indicated by the sound data is less than or equal to a predetermined value continues for a predetermined time by tracing back the sound data recorded in the first file. The recording apparatus according to claim 3, wherein the overlapping period is determined from a position to the end. The recording apparatus further includes an encoding unit that encodes video data obtained by the imaging unit by selectively using intra-frame encoding and inter-screen prediction encoding,
The determining means detects a frame encoded in the screen retroactively from the end of the video data recorded in the first file, and the period from the detected in-screen encoded frame to the end is used as the overlap period. 4. The recording apparatus according to claim 3, wherein the recording apparatus is determined. The recording apparatus further includes reproducing means for reproducing video data from the recording medium,
The control means further controls the reproduction means to reversely reproduce the video data recorded in the first file from the end during the recording of the video data for the second file,
4. The determination unit according to claim 3, wherein the determining unit determines, from the position where the reverse playback stop instruction is given to the end point, as the overlap period, in response to an instruction to stop reverse playback during the reverse playback. Recording device.   8. The recording apparatus according to claim 7, wherein the reproduction unit causes the image display unit to simultaneously display an image based on the video data output from the photographing unit and an image based on the reverse reproduction or rewind reproduction.   The reproduction means displays the image by the reverse reproduction or rewind reproduction on an external image display means different from the image display means for displaying an image based on video data output from the photographing means. The recording apparatus according to claim 7.   3. The recording apparatus according to claim 2, wherein the first and second files are accommodated in the same hierarchical structure provided on the recording medium. The recording means further records size information indicating the size of the overlapped portion recorded in the first file and relationship information indicating the interrelationship between the files for the first and second files,
It further has a reproducing means for reproducing the video data recorded in the first and second files from the recording medium without reproducing the overlapped part using the size information and the relationship information. The recording apparatus according to claim 2. In a file division method applied to a recording apparatus for recording video data obtained by a photographing means on a randomly accessible recording medium,
A recording step of recording video data obtained by the photographing means on the recording medium;
A division instruction step for arbitrarily instructing division of video data to be recorded on the recording medium;
In response to an instruction to start recording, the video data output from the photographing unit is stored in the first file and recorded on the recording medium, and the division instruction step during recording of the video data of the first file is performed. Control for controlling the recording step so that the video data output from the photographing means after the division instruction is stored in a second file different from the first file and recorded on the recording medium according to the instruction And a file dividing method.   The control step further includes adding a portion near the end of the video data recorded in the first file as an overlapping portion to the head of the video data output from the photographing unit after the division instruction, 13. The file dividing method according to claim 12, wherein the recording step is controlled so as to be stored in the second file.   14. The file dividing method according to claim 13, further comprising a determining step for determining a period of the overlapping portion.   15. The file dividing method according to claim 14, wherein the determining step determines the overlap period based on a time designated by a user. The recording step further stores and records audio data related to the video data in the first and second files,
In the determination step, the audio data recorded in the first file is traced back from the end, and the position where the audio level indicated by the audio data is below a predetermined value is detected for a predetermined time. 15. The file dividing method according to claim 14, wherein the overlapping period is determined from a position to the end. An encoding step of encoding the video data obtained by the imaging means by selectively using intra-frame encoding and inter-screen prediction encoding;
The determining step detects a frame in which the video data recorded in the first file is retrocoded from the end to an intra-frame encoded frame, and the period from the detected intra-frame encoded frame to the end is used as the overlap period. 15. The file dividing method according to claim 14, wherein the file dividing method is determined. A reproduction step of reproducing video data from the recording medium;
The control step further controls the reproduction step to reversely reproduce the video data recorded in the first file from the end during the recording of the video data for the second file,
15. The determination step according to claim 14, wherein the overlap period is determined from a position where the reverse playback stop instruction is issued to the end in accordance with an instruction of reverse playback stop during the reverse playback. File division method.   19. The file division method according to claim 18, wherein the reproduction step causes the image display unit to simultaneously display an image based on the video data output from the photographing unit and an image based on the reverse reproduction or rewind reproduction. .   The reproduction step displays the image by the reverse reproduction or the rewind reproduction on an external image display means different from the image display means for displaying an image based on the video data output from the photographing means. The file dividing method according to claim 18.   14. The file division method according to claim 13, wherein the first and second files are accommodated in the same hierarchical structure provided on the recording medium. The recording step further records, for the first and second files, size information indicating the size of the overlapping portion recorded in the own file, and relationship information indicating a mutual relationship between the files,
The method further comprises a reproduction step of reproducing the video data recorded in the first and second files from the recording medium without reproducing the overlapped part using the size information and the relationship information. The file dividing method according to claim 13. In a program for causing a computer to execute a file division method applied to a recording apparatus that records video data obtained by a photographing unit on a randomly accessible recording medium,
A recording step of recording video data obtained by the photographing means on the recording medium;
A division instruction step for arbitrarily instructing division of video data to be recorded on the recording medium;
In response to an instruction to start recording, the video data output from the photographing unit is stored in the first file and recorded on the recording medium, and the division instruction step during recording of the video data of the first file is performed. Control for controlling the recording step so that the video data output from the photographing means after the division instruction is stored in a second file different from the first file and recorded on the recording medium according to the instruction A program comprising steps.   The control step further includes adding a portion near the end of the video data recorded in the first file as an overlapping portion to the head of the video data output from the photographing unit after the division instruction, 24. The program according to claim 23, wherein the recording step is controlled so as to be stored in the second file.

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