JP2005303943A - Video recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mark a video image under recording while maintaining compatibility of a file format. <P>SOLUTION: An instruction acquisition part 121 of a mark request section 120 acquires an instruction from a user via a user interface 110 and requests the registration of a mark according to the instruction. An event acquisition part 122 acquires a predetermined event that occurs in the case of recording a video image, and requests the registration of the mark according to the event. A mark registration section 130 registers the mark in a mark table 700 based on the mark registration request from the mark request section 120. An effect processing section 140 applies effect processing while defining a video portion held between marks held in the mark table 700 as an editing unit. An edit list creating section 150 produces an edit list table 576 while defining a video portion determined by marks held in the mark table 700 as an editing unit. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a video recording apparatus, and more particularly, to a video recording apparatus that records video in a format accessible for each predetermined editing unit, a processing method thereof, and a program that causes a computer to execute the method.

  A QuickTime file format is known as one of recording formats in the recording / reproducing apparatus. This QuickTime file format is a file format for handling multimedia data. Actual data of video data and audio data is held in a media data atom (also referred to as movie data), and the management information is stored in a movie atom (movie). (Also called resources). This allows video data and audio data to be edited "non-destructively" without having to modify the actual data directly.

  When recording video (video data and audio data) using this QuickTime file format, a mark (mark) is attached to the video so that it can be used later for editing. No function is provided in the specification. On the other hand, a movie atom in the QuickTime file format can be provided with an area called a user data atom that holds information defined by the user. Therefore, conventionally, in order to put a mark, this user data atom must be used under the control of the user.

This user data atom is used for various purposes. For example, a method for recording session information for transmitting movie data in the user data atom has been proposed (for example, see Patent Document 1).
Japanese translation of PCT publication No. 2003-526227 (paragraph 0142)

  However, the user data atom is a unique specification used under the management of the user, and there is a problem that compatibility as a file format cannot be maintained. That is, the information defined in the user data atom cannot be used by others unless the specification is separately communicated in some form.

  In addition, when a user data atom is provided, information for managing it is required in addition to the original information, and there is a problem that an area for recording the management information is consumed.

  On the other hand, while it is possible to forcibly divide the video by repeatedly stopping and restarting recording while recording the video, the user does not want to destruct the recorded content more destructively than necessary. . In particular, in the case of an image including music, it is desirable to avoid interruption during recording.

  Accordingly, an object of the present invention is to add a mark (separator) to a video being recorded while maintaining compatibility of file formats.

  In order to solve the above-mentioned problem, a video recording apparatus according to claim 1 of the present invention is a video recording apparatus for recording a video, and includes a delimiter position holding means for holding a delimiter position in the video, and recording of the video. A separator position registration request means for requesting registration of the separator position at the time, a separator position registration means for registering the separator position in the separator position holding means based on the request, and a separator held in the separator position holding means Editing unit generating means for generating a video portion determined by the position as an editing unit. Thereby, when the video is recorded, a delimiter position is given, and an image portion defined by the delimiter position is generated as an editing unit.

  The video recording apparatus according to claim 2 of the present invention is the video recording apparatus according to claim 1, wherein the delimiter position registration request means includes instruction acquisition means for acquiring an instruction from a user, and the instruction recording means according to the instruction. Requests registration of the break position. Thereby, there is an effect that the separation position is given in accordance with the instruction from the user.

  The video recording apparatus according to claim 3 of the present invention is the video recording apparatus according to claim 1, wherein the delimiter position registration requesting unit acquires a predetermined event that occurs when the video is recorded. Means for requesting registration of the break position according to the event. This brings about the effect that a delimiter position is given according to a predetermined event.

  The video recording apparatus according to claim 4 of the present invention is the video recording apparatus according to claim 3, wherein the event acquisition means acquires an event that "the video is within a predetermined zoom range". It is. As a result, an effect is provided in which a separation position is given when the video image falls within a predetermined zoom range.

  The video recording apparatus according to claim 5 of the present invention is the video recording apparatus according to claim 3, wherein the event acquisition means indicates that “the predetermined period has elapsed after the video is within a predetermined zoom range”. To get the event. Accordingly, there is an effect that a delimiter position is given when a predetermined period elapses after the video is within a predetermined zoom range.

  The video recording apparatus according to claim 6 of the present invention is the video recording apparatus according to claim 3, wherein the event acquisition means acquires an event that "the video is within a predetermined focus range". It is. As a result, there is an effect that a delimiter position is given when an image falls within a predetermined focus range.

  The video recording apparatus according to claim 7 of the present invention is the video recording apparatus according to claim 3, wherein the event acquisition means indicates that “the predetermined period has elapsed after the video is within a predetermined focus range”. To get the event. Accordingly, there is an effect that a delimiter position is given when a predetermined period elapses after the video is within a predetermined focus range.

  The video recording apparatus according to claim 8 of the present invention is the video recording apparatus according to claim 1, wherein the delimiter position holding means holds a relative time from the recording start position of the video as the delimiter position. It is. As a result, the editing unit is generated from the relative time from the video recording start position.

  According to a ninth aspect of the present invention, there is provided the video recording apparatus according to the first aspect, wherein the video recording apparatus according to the first aspect applies a video effect in units of a video portion defined by the separation position held in the separation position holding means. An effect processing means is further provided. This brings about the effect that it is possible to apply the video effect before generating the editing unit.

  The video recording apparatus according to claim 10 of the present invention is the video recording apparatus according to claim 1, wherein the editing unit is defined as a video portion sandwiched between the delimiter positions. As a result, the editing unit is generated from the break position registered in the break position holding means.

  The video recording apparatus according to claim 11 of the present invention is the video recording apparatus according to claim 10, wherein the video is recorded as a media data atom in the QuickTime format, and the editing unit is an edit restore tom in the QuickTime format. It will be recorded. This brings about the effect of giving a break position to the video being recorded while maintaining the compatibility of the QuickTime file format.

  According to a twelfth aspect of the present invention, in the video recording apparatus including a delimiter position holding unit for holding a delimiter position in a video to be recorded, the delimiter position is set to the delimiter position holding unit at the start of recording. A procedure for registering the delimiter position in the delimiter position holding means when an instruction from the user is acquired, a procedure for registering the delimiter position in the delimiter position holding means when recording is stopped, And a procedure for generating, as an editing unit, a video portion defined by the break position held in the break position holding means. Thus, a delimiter position is given according to an instruction from the user, and the video portion defined by the delimiter position is generated as an editing unit.

  According to a thirteenth aspect of the present invention, in the video recording apparatus comprising a delimiter position holding unit for holding a delimiter position in a video to be recorded, the delimiter position is set to the delimiter position holding unit at the start of recording. A procedure for registering the delimiter position in the delimiter position holding means when a predetermined event is acquired, a procedure for registering the delimiter position in the delimiter position holding means when recording is stopped, and And a procedure for generating, as an editing unit, a video portion defined by the break position held in the break position holding means. Thereby, a delimiter position is given according to a predetermined event, and an effect is produced in which a video portion defined by the delimiter position is generated as an editing unit.

  According to a fourteenth aspect of the present invention, in the video recording apparatus comprising a separation position holding means for holding a separation position in a video to be recorded, the separation position is registered in the separation position holding means at the start of recording. A procedure for registering the separation position in the separation position holding means when an instruction from the user is acquired, a procedure for registering the separation position in the separation position holding means when stopping recording, and the separation position And causing the computer to execute a procedure for generating a video portion defined by a break position held by the position holding means as an editing unit. Thus, a delimiter position is given according to an instruction from the user, and the video portion defined by the delimiter position is generated as an editing unit.

  According to a fifteenth aspect of the present invention, in the video recording apparatus including a delimiter position holding unit for holding a delimiter position in a video to be recorded, the delimiter position is registered in the delimiter position holding unit at the start of recording. A procedure for registering the delimiter position in the delimiter position holding means when a predetermined event is acquired, a procedure for registering the delimiter position in the delimiter position holding means when recording is stopped, and the delimiter position And causing the computer to execute a procedure for generating, as an editing unit, a video portion defined by a delimiter position held in the holding means. Thereby, a delimiter position is given according to a predetermined event, and an effect is produced in which a video portion defined by the delimiter position is generated as an editing unit.

  According to the present invention, it is possible to achieve an excellent effect of adding a mark to a video being recorded while maintaining compatibility of file formats.

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

  FIG. 1 is a diagram showing an example of the overall configuration of a video recording apparatus 300 according to an embodiment of the present invention. The video recording apparatus 300 includes a lens unit 310, motors 315 and 316 that operate the lens unit 310, and a motor driver 319. The video recording apparatus 300 also includes an image sensor 321, an analog processor 322, an A / D converter 323, a digital processor 324, a timing generator 325 that generates these timings, a camera control unit 329, and the like. Is provided. The video recording apparatus 300 includes a video encoder 331, an audio encoder 332, a file generator 333, a file decoder 334, a video decoder 335, an audio decoder 336, a memory 337, and a memory thereof. A controller 338 and a system control unit 339 are provided. A signal line from a user input button 390 is connected to the system control unit 339. Furthermore, the video recording apparatus 300 includes an error corrector 341, a data modulator / demodulator 342, a magnetic field modulation driver 343, a magnetic field head 344, a servo circuit 345, a motor 346, an optical pickup 347, and a drive control unit 349. It has. In addition, for example, an optical disc 370 is mounted on the video recording apparatus 300 as a recording medium for recording video.

  The lens unit 310 receives light from the subject and includes a zoom lens 311 and a focus lens 312. Motors 315 and 316 are connected to the zoom lens 311 and the focus lens 312, respectively, and the zoom lens 311 and the focus lens 312 can be moved by driving the motors 315 and 316. A motor driver 319 is connected to the motors 315 and 316, and the motors 315 and 316 are controlled by the motor driver 319.

  The imaging element 321 is an element that converts light received by the lens unit 310 into static electricity and stores the static electricity. For example, a CCD (Charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor) sensor, or the like is used. The analog processor 322 removes noise in the analog signal from the image sensor 321 by correlated double sampling (CDS) and corrects the high and low portions of the analog signal by automatic gain control (AGC). The A / D converter 323 converts the analog signal from the analog processor 322 into a digital signal. The digital processor 324 performs processing such as white balance and gamma conversion.

  An output signal from the digital processor 324 becomes a video input of the video encoder 331. Information detected by the digital processor 324 is transmitted to the camera control unit 329. The camera control unit 329 controls the motor driver 319 and the timing generator 325 based on the information detected by the digital processor 324. The timing generator 325 generates timing signals for the image sensor 321, the analog processor 322, the A / D converter 323, and the digital processor 324.

  The video encoder 331 encodes a video signal. The audio encoder 332 encodes an audio signal. The file generator 333 multiplexes the encoded video data and audio data to generate a video file (multiplexed data). The file decoder 334 decodes the video file and outputs video data and audio data. The video decoder 335 decodes the video data and outputs a video signal. The audio decoder 336 decodes the audio data and outputs an audio signal.

  In FIG. 1, although the input signal of the audio encoder 332 and the output signals of the video decoder 335 and the audio decoder 336 are omitted, the audio input signal, the video output signal, and the audio output signal are respectively connected. The

  The memory 337 holds a video file, a mark table 700 described later, and the like. The memory controller 338 writes the multiplexed data supplied from the file generator 333 and the error corrector 341 to the memory 337, reads the multiplexed data from the memory 337, and supplies the multiplexed data to the error corrector 341 and the file decoder 334. .

  The system control unit 339 controls the operation of the memory controller 338 and the operations of the file generator 333 and the file decoder 334 as described above. Further, the system control unit 339 connects to the drive control unit 349 and requests the operation of the disk drive. Further, the system control unit 339 can be connected to the camera control unit 329 to obtain whether or not the autofocus is in focus and the focal length as the autofocus and zoom states.

  Further, a user input button 390 is connected to the system control unit 339, and an instruction input from the user can be grasped. As the user input button 390, for example, a zoom-related button and a recording-related button are provided. The system control unit 339 is connected to the camera control unit 329, and controls zooming and the like according to an instruction input from the user.

  The error corrector 341 adds a code for interleaving and error correction to the multiplexed data from the memory controller 338 and supplies the data to the data modulator / demodulator 342. The error corrector 341 performs deinterleaving and error correction processing on the demodulated signal from the data modulator / demodulator 342 and supplies multiplexed data to the memory controller 338.

  The data modulator / demodulator 342 performs predetermined modulation for recording on the optical disc 370 and then outputs the signal to the magnetic field modulation driver 343 and simultaneously outputs a signal for driving the optical pickup 347. Further, the data modulator / demodulator 342 performs predetermined demodulation processing on the signal from the optical pickup 347 and outputs it to the error corrector 341 as a demodulated signal.

  The magnetic field modulation driver 343 applies a magnetic field to the optical disk 370 by driving the magnetic field head 344 according to the input signal at the time of recording. The optical pickup 347 records a signal on the optical disc 370 by irradiating the optical disc 370 with a recording laser beam during recording. Further, the optical pickup 347 irradiates the optical disc 370 with a reproduction laser beam during reproduction, photoelectrically converts the beam amount reflected from the optical disc 370 into an electric signal, and obtains a reproduction signal. In response to a request from the system control unit 339, the drive control unit 349 issues a request to the servo circuit 345 to control the entire disk drive. The servo circuit 345 controls the movement of the optical pickup 347 in the radial direction of the disk, the tracking servo, and the focus servo, and also controls the spindle servo of the motor 346.

  In the above configuration example, a magneto-optical disk that performs magnetic field modulation is assumed, but the basic configuration is the same even in the case of a phase change disk.

  FIG. 2 is a diagram illustrating an example of a recording state of a video file on an optical disc as a recording target of the video recording apparatus 300 according to the embodiment of the present invention. The optical disk 371 records video files on the recording areas 372 and 373. As one of the recording formats, for example, in the QuickTime file format, actual data of video data and audio data is held in a media data atom (type name: 'mdat'), and management information thereof is a movie atom (type name: 'moov'). ') Hold on.

  These media data atom and movie atom may be stored closed in one file, or a movie atom may refer to a media data atom in another file. For example, a file in which a movie atom 381 and a media data atom 382 are stored together like a file recorded in the recording area 372 is called a self-included file. On the other hand, a file storing a movie atom 383 that refers to a media data atom 382 in another file, such as a file recorded in the recording area 373, is called an external reference file.

  The media data atom 382 stores, for example, audio data encoded by a compression encoding method based on MPEG1 Audio Layer 2 and image data encoded by a compression encoding method according to the MPEG2 Video standard. The encoding method is not limited to these. For example, Motion JPEG, Motion JPEG2000, MPEG4 and AVC (Advanced Video Coding: MPEG4-part10), audio such as Dolby AC3 and ATRAC may be used, and compression encoding is performed. It is also possible to store linear data that has not been processed.

  FIG. 3 is a diagram illustrating a configuration example of a movie atom in the QuickTime file format. A movie atom ('moov') 500 that is management information of the media data atom ('mdat') is a movie header atom ('mvhd') 510, a user data atom ('udta') 520, and a video track atom 540. And an audio track atom 590 and the like.

  The movie header atom 510 is a part that holds the header information of the movie atom 500, and shows the characteristics of the entire movie. For example, the period, time scale, creation date, etc. of the entire movie are included as items.

  The user data atom 520 includes arbitrary information defined by the user. For example, it is possible to hold a movie window position, a playback method, creation information, and the like. This user data atom 520 holds movie user data 530 in a list format.

  The track atom ('trak') stores different types of data such as sound, video, and text in different tracks. In FIG. 3, a track header atom ('tkhd') is used as the video track atom 540. ) 550, an edit atom ('edts') 560, and a media atom ('mdia') 580. Although the audio track atom 590 is omitted, the audio track atom 590 has the same configuration as that of the video.

  The track header atom 550 is a part that holds the header information of the track atom 540 and indicates the characteristics of the track. For example, the number of video pixels, sound volume, creation date, and the like are included as items.

  The edit atom 560 holds track editing information as an edit restore tom ('elst') 570. The edit atom 560 will be described in detail with reference to FIG.

  The media atom 580 stores information regarding actual data actually used in the track. That is, the media atom 580 stores information on the entire media, information on handling of media data, information on the configuration of the media, and the like. Actual data is divided into minimum units called samples, and a collection of an arbitrary number of samples is called a chunk. The media atom 580 stores the sample size, the chunk storage location, the display time of each sample, and the like.

  FIG. 4 is a diagram illustrating a configuration example of an edit atom in the QuickTime file format. As shown in FIG. 4A, the edit atom 560 includes a size 561 indicating the size of the edit atom 560, a type 562 indicating that it is an edit atom, and an edit restore tom 570.

  The edit restore tom 570 includes a size 571 indicating the size of the edit restore tom 570, a type 572 indicating that it is an edit restore tom, an edit restore tom version 573, an unused flag 574, and an edit list table 576. And the number of entries 575 in the edit list table 576.

  The edit list table 576 is composed of the number of entries indicated by the number of entries 575. As shown in FIG. 4B, each entry in the edit list table 576 includes a track period 5761, a media time 5762, and a media rate 5763. A track period 5761 indicates a period of a corresponding editing unit. The media time 5762 indicates the start time in the media data atom of the corresponding editing unit. If the media time 5762 indicates “−1”, it means that the corresponding editing unit does not exist in the media data atom. The media rate 5763 indicates the time ratio at the time of reproduction, and indicates “1.0” when the reproduction time does not change between the time axis in the media data atom and the time axis after editing.

  FIG. 5 is a diagram illustrating an example of a functional configuration of the video recording apparatus 300 according to the embodiment of the present invention. In this functional configuration, the video recording apparatus 300 includes a user interface 110, a mark request unit 120, a mark registration unit 130, an effect processing unit 140, an edit list creation unit 150, a mark table 700, and an edit list table 576. With.

  The user interface 110 performs display for the user or accepts input from the user. For example, a user input button 390 or a display (not shown) corresponds to this.

  The mark requesting unit 120 requests registration of a mark when recording a video. This mark is a mark (separation position) attached to the video and is used for editing after video recording. The mark request unit 120 further includes an instruction acquisition unit 121 and an event acquisition unit 122.

  The instruction acquisition unit 121 acquires an instruction from the user via the user interface 110, and requests registration of a mark according to the instruction from the user. This instruction from the user includes, for example, an explicit instruction by the user such as pressing a mark request button or an implicit instruction such as pressing a recording start button or recording stop button. Further, the event acquisition unit 122 acquires a predetermined event that has occurred during video recording, and requests registration of a mark according to the event. The predetermined event includes, for example, an event such as when the user falls within a predetermined zoom range due to a zoom operation by the user, or when the user falls within a predetermined focus range due to autofocus.

  The mark registration unit 130 registers a mark in the mark table 700 based on the mark registration request from the mark request unit 120. The mark table 700 holds a temporal position at the time of video recording as a mark. For example, the relative time from the recording start position can be held with the recording start position as time zero.

  The effect processing unit 140 performs effect processing using video portions sandwiched between marks held in the mark table 700 as edit units. At this time, the effect processing unit 140 indicates the editing unit to the user via the user interface 110 and prompts the user to specify the content of the effect processing. Then, the contents of the designated effect processing are stored in the effect track of the movie atom.

  Note that the processing in the effect processing unit 140 is not necessarily performed at this stage, and can be performed even after the edit list table 576 is created by the edit list creation unit 150. The editing process after creation of the edit list table 576 is the same as a known procedure, and the description thereof is omitted here.

  The edit list creation unit 150 generates an edit list table 576 using the video portion defined by the mark held in the mark table 700 as an editing unit. Each entry in the edit list table 576 is as described with reference to FIG. 4B, and the edit list creation unit 150 performs the track period 5761, media time 5762, and media of each entry based on the marks held in the mark table 700. A rate 5763 is output.

  Note that the mark request unit 120, the mark registration unit 130, the effect processing unit 140, and the edit list creation unit 150 can be realized as the system control unit 339 in the video recording apparatus 300 of FIG. Also, the mark table 700 can be stored in the memory 337 in the video recording apparatus 300 of FIG. The edit list table 576 can be stored on the optical disc 370 as a part of the movie atom 500.

  FIG. 6 is a diagram showing an example of an external configuration of the video recording apparatus 300 according to the embodiment of the present invention. This external configuration includes a lens unit 310, a disk drive 340, a zoom wide-angle button 391, a zoom telephoto button 392, a recording start button 393, a playback start button 394, a stop button 395, and a mark button 396. It is shown.

  The lens unit 310 receives light from the subject as described above, and the outermost lens appears on the exterior surface. The disk drive 340 can mount the optical disk 370, and the optical disk 370 is read and written via the optical pickup 347 and the like described above.

  The buttons 391 to 396 correspond to the user input button 390 in FIG. 1, and various buttons can be provided for each model. The zoom wide-angle button 391 and the zoom telephoto button 392 are buttons used for zoom adjustment. When the zoom wide-angle button 391 is pressed, the zoom lens 311 moves in the wide-angle direction, and when the zoom telephoto button 392 is pressed, the zoom is zoomed in. The lens 311 moves in the telephoto direction.

  The recording start button 393 is pressed when the user instructs to start recording. The playback start button 394 is pressed when the user gives an instruction to start playback. A stop button 395 is pressed when the user instructs to stop recording or reproduction. The mark button 396 is pressed when the user instructs registration of a mark.

  FIG. 7 is a diagram showing a configuration example of the mark table 700 according to the embodiment of the present invention. The mark table 700 includes a mark time table 710 and a final entry pointer 720. The mark table 700 is held in the memory 337 in the video recording apparatus 300 of FIG.

  The mark time table 710 holds the time when a mark is registered in each entry. For example, the relative time from the recording start position can be sequentially held with the recording start position as time zero. The number of entries in the mark time table 710 is arbitrary, and the final entry pointer 720 points to the final entry.

  FIG. 8 is a diagram showing a usage example of the mark table 700 and the edit list table 576 in the embodiment of the present invention. In FIG. 8A, recording starts at time “0” (A), and a first mark request is made at time “1” (B). Thereafter, a second mark request is made at time “4” (C), and a third mark request is made at time “7” (D). Then, recording stops at time “9” (E).

  FIG. 8B shows an example of a mark table 700 in which marks are registered for (A) to (E). The mark table 700 holds the corresponding times for each of (A) to (E). With these marks (A) to (E), the media data is divided into editing units (1) to (4) as movie images as shown in FIG.

  FIG. 8C shows an example of an edit list table 576 that defines the editing units (1) to (4). In the track period 5761, the time length of the corresponding editing unit is stored. The media time 5762 stores the start time on the media time scale of the corresponding editing unit. Also, as the media rate 5763, “1.0” is stored in all since there is no change in the time scale.

  As described above, the edit list table 576 is created based on the marks registered in the mark table 700 at the time of video recording and stored in the movie atom 500, so that the QuickTime file format compatibility is maintained while recording. A mark can be given to the video.

  In the example of FIG. 8, the video from the start to the stop of recording is stored in the media data, but in a predetermined period (for example, about 2 seconds) immediately before the recording start button 393 is pressed in the standby mode. The video is automatically stored in the media data (referred to as pre-recording), or the video for a predetermined period (for example, about 2 seconds) immediately after the stop button 395 is pressed during recording is automatically stored in the media data. (This is called post-recording.) In this case, pre-recording and post-recording can be used as a so-called “paste” in editing.

  FIG. 9 is a diagram showing an example of the processing content of the effect processing unit 140 in the embodiment of the present invention. FIG. 9A shows an example of a screen displayed to the user by the effect processing unit 140. A representative screen 810 is displayed for each editing unit separated by marks.

  When the user designates the target editing unit from the representative screen 810, the effect processing content 820 can be designated for the editing unit. In the example of FIG. 9A, “fade in” is designated as the effect type, and “black” is designated as the parameter.

  Note that the effect types that can be used in the QuickTime file format are classified into three types: filter effects such as embossing, transition effects such as wipe, and generator effects such as water surface expression. Then, parameters are specified for each effect type.

  FIG. 9B shows a stored image in the video file. As described above, the contents of the video file can be divided into media data atom 387 which is actual data and movie atom 384 which is management information thereof. The media data atom 387 stores media data 388, an effect parameter group 389, and the like. The movie atom 384 stores a video track 385, an effect track 386, and the like. The contents of the above-described effect processing are stored in this effect track 386. The effect track 386 includes an effect description (effect description) and an input map.

  Next, the operation of the video recording apparatus 300 in the embodiment of the present invention will be described with reference to the drawings.

  FIG. 10 is a diagram showing an example of a processing procedure of the video recording apparatus 300 according to the embodiment of the present invention. First, the mark requesting unit 120 checks the input state of the user (step S911), and when a recording start request is issued (step S912), requests the mark registration. In response to this, the mark registration unit 130 registers the recording start time as a mark in the mark table 700 (step S913).

  After the start of recording, movie data is sequentially recorded on the optical disc 370 (step S914), and the management information is held in the memory 337 as the movie atom 500 (step S915). Meanwhile, the mark requesting unit 120 checks the input state of the user (step S916), and when a mark request is issued (step S917), requests the mark registration. In response to this, the mark registration unit 130 registers a mark in the mark table 700 (step S918). Further, when a stop request is issued (step S919), the mark request unit 120 requests registration of a mark. In response to this, the mark registration unit 130 registers the recording stop time as a mark in the mark table 700 (step S921).

  Thereafter, the effect processing unit 140 performs effect processing on the movie data in accordance with an instruction from the user (step S922). Then, the edit list creation unit 150 creates an edit list table 576 based on the mark table 700 (step S923). The management information including the edit list table 576 is then recorded on the optical disc 370 (step S924).

  FIG. 11 is a diagram illustrating an example of a procedure of user input processing according to the embodiment of the present invention. This user input process corresponds to step S911 or S916 in FIG. The mark requesting unit 120 acquires the state of the user input button 390 (step S931), and performs the following processing according to the state (step S932). That is, the instruction acquisition unit 121 issues a recording start request when the recording start button 393 is pressed (step S933). If the playback start button 394 is pressed, a playback start request is issued (step S934). If the stop button 395 is pressed, a stop request is issued (step S935). If the mark button 396 is pressed, a mark request is issued (step S936).

  Further, the event acquisition unit 122 acquires an event (step S937), and when a predetermined event is acquired (step S938), issues a mark request (step S939).

  FIG. 12 is a diagram showing an example of the procedure of effect processing in the embodiment of the present invention. This effect process corresponds to step S922 in FIG. The effect processing unit 140 reads the mark table 700 (step S941), and displays the editing unit divided by the mark as an editing section (step S942).

  When the user selects an editing section, the effect processing unit 140 accepts the selection (step S943). When the user selects an effect type and its parameters, the effect processing unit 140 accepts the selection (step S944). Then, the effect processing unit 140 holds the contents of the effect processing as management information (step S945). If the user selects effect processing for another editing section, the processing from step S943 is repeated again, otherwise the processing ends (step S946).

  FIG. 13 is a diagram showing an example of the procedure of edit list table creation processing in the embodiment of the present invention. This edit list table creation process corresponds to step S923 in FIG. Here, the variable indicating the entry number of the mark table 700 or the edit list table 576 is represented by i, and the contents of each entry of the mark table 700 are represented by M (i). A value indicating the total number of entries in the mark table 700 is represented as N.

  First, after initializing the variable i to “1” (step S951), the track period 5761 of the i-th entry in the edit list table 576 is calculated (step S952). That is, the track period 5761 is calculated by subtracting the value of the i-th entry from the value of the (i + 1) -th entry of the mark table 700 and converting it to the unit of the movie time scale.

  Then, the media time 5762 of the i-th entry in the edit list table 576 is calculated (step S953). That is, the media time 5762 is calculated by converting the value of the i-th entry of the mark table 700 into the unit of the media time scale. Note that if a shift occurs on the media time scale as a result of performing the above-described pre-recording, the time required for the pre-recording is subtracted from each value of the mark table 700 and then converted to the unit of the media time scale. Time 5762 is calculated.

  Further, “1.0” is given to the media rate 5762 of the i-th entry in the edit list table 576 (step S954). The track period 5761, the media time 5762, and the media rate 5762 edit list table 576 calculated in this way are added as the i-th entry (step S955). Thereafter, “1” is added to the variable i (step S956), and the processing from step S952 is repeated until the value of “i + 1” exceeds the total number N of entries in the mark table 700 (step S957).

  Next, a specific example of event acquisition processing of the video recording apparatus 300 in the embodiment of the present invention will be described with reference to the drawings. This event acquisition process corresponds to step S937 in FIG.

FIG. 14 is a diagram illustrating an example of acquiring an event indicating that the image is within a predetermined zoom range, as an example of event acquisition processing according to the embodiment of the present invention. It is assumed that the zoom lens 311 is on the telephoto side at the start of recording. When the user presses the zoom wide-angle button 391, the position of the zoom lens 311 gradually moves in the wide-angle direction, and enters the mark permission area beyond the telephoto limit. This mark permission area means a predetermined position of the zoom lens 311. This mark permission area is an area sandwiched between the telephoto limit and the wide-angle limit. When the position of the zoom lens 311 is within this mark permission area, a predetermined period T _keep (for example, about 2 seconds) has elapsed since the mark request has not yet been made and the zoom wide-angle button 391 has not been pressed. On this condition, the event acquisition unit 122 requests mark registration as having acquired the event.

  Here, the zoom wide-angle button 391 is taken as an example, but the same processing can be performed for the operation of the zoom telephoto button 392 as well.

  FIG. 15 is a diagram illustrating a processing procedure of an example in which an event indicating that the image is within a predetermined zoom range is acquired as an example of the event acquisition processing according to the embodiment of the present invention. First, as a premise of this process, it is checked whether or not the user permits the mark to be given during the zoom operation (step S961). If the user does not permit such processing, the following processing is not performed.

  The event acquisition unit 122 acquires the state of the user input button 390 (step S962), and if the zoom wide-angle button 391 is pressed, the subsequent processing is not performed (step S963). On the other hand, if the zoom wide-angle button 391 has not been pressed, the event acquisition unit 122 acquires zoom parameters from the camera control unit 329 (step S964). If the position of the zoom lens 311 is not in the mark permission area, the subsequent processing is not performed (step S965).

  The above-mentioned zoom parameter is a value that is, for example, “100” at the zoom wide-angle limit and “0” at the zoom telephoto limit. On the other hand, for example, if the wide angle limit of the mark permission area is set to “100” and the telephoto limit of the mark permission area is set to “20”, it can be determined whether or not the position of the zoom lens 311 is in the mark permission area. it can.

If it is determined in step S965 that the position of the zoom lens 311 is within the mark permission area, a mark request has not yet been made, and a predetermined period T _{keep has} elapsed since the zoom wide-angle button 391 was not pressed ( In step S966), the event acquisition unit 122 requests mark registration as an event acquisition (step S967). In this way, when the zoom wide-angle button 391 is pressed to enter the mark permission area, a mark is given to the mark table 700.

FIG. 16 is a diagram illustrating an example of acquiring an event indicating that the image is within a predetermined focus range by autofocus as another example of event acquisition processing according to the embodiment of the present invention. It is assumed that the position of the focus lens 312 is on the short distance side at the start of recording. When the autofocus function starts to work, the position of the focus lens 312 gradually moves in the long distance direction and enters the focus area. After entering this focus area, the event acquisition unit 122 is conditioned on the condition that a mark request has not yet been made and a predetermined period T _keep (for example, about 2 seconds) has elapsed since entering this focus area. A mark registration request is made as an event acquisition.

  FIG. 17 is a diagram illustrating a processing procedure for realizing the autofocus function. In this processing procedure, the autofocus function is realized by utilizing the feature that images with the same angle tend to have higher contrast and more high-frequency components as the image is in focus.

  First, the focus lens 312 is slightly moved in a predetermined direction (step S971). Then, a high pass filter (HPF) operation is performed on the input frame image at that time (step S972). As a result of the calculation, the maximum value among them is set as the evaluation value (step S973).

  Then, the evaluation value obtained in step S973 this time is compared with the previous evaluation value. If the previous evaluation value is larger (step S974), the moving direction of the focus lens 312 is reversed (step S975). ). And the process after step S971 is repeated.

  As a result, the focus lens 312 moves so that the evaluation value increases, and an image with more high-frequency components can be obtained. That is, it falls within a predetermined focus area by the autofocus function. This processing procedure always operates as long as the autofocus function is enabled.

  FIG. 18 is a diagram illustrating a processing procedure of an example of acquiring an event indicating that the event is within a predetermined focus range by autofocus as another example of the event acquisition processing according to the embodiment of the present invention. First, as a premise of this process, it is checked whether or not the user permits the mark to be given during autofocus (step S981). If the user does not permit such processing, the following processing is not performed.

The event acquisition unit 122 acquires a focus parameter from the camera control unit 329 (step S982). If it is confirmed by the focus parameter that it is within the focus range, a mark request has not been made since the focus range has been reached, and a predetermined period T _{keep has} elapsed since the focus range was reached. (Step S983), the event acquisition unit 122 makes a mark registration request as an event acquisition (Step S984). In this way, when focus is achieved with the autofocus function enabled, a mark is given to the mark table 700.

  As described above, according to the embodiment of the present invention, marks are registered in the mark table 700 at the time of video recording, and the edit list table 576 is created based on the marks and stored in the movie atom 500. Thus, it is possible to add a mark to the video being recorded while maintaining compatibility of the QuickTime file format. This mark can be used not only for editing but also for skip reproduction.

  The embodiment of the present invention is an example for embodying the present invention and has a corresponding relationship with the invention-specific matters in the claims as shown below, but is not limited thereto. However, various modifications can be made without departing from the scope of the present invention.

  That is, in claim 1, the delimiter position holding means corresponds to the mark table 700, for example. The delimiter position registration request unit corresponds to the mark request unit 120, for example. The delimiter position registration unit corresponds to the mark registration unit 130, for example. The editing unit generation means corresponds to the edit list creation unit 150, for example.

  Further, in claim 2, the instruction acquisition unit corresponds to, for example, the instruction acquisition unit 121.

  Further, in claim 3, the event acquisition means corresponds to, for example, the event acquisition unit 122.

  Further, in claim 9, the video effect processing means corresponds to the effect processing unit 140, for example.

  Further, in claim 12 or 14, the separation position holding means corresponds to the mark table 700, for example. The procedure for registering the separation position in the separation position holding means at the start of recording corresponds to, for example, step S913. The procedure for registering the break position in the break position holding means when an instruction from the user is acquired corresponds to, for example, step S918. The procedure for registering the break position in the break position holding means when recording is stopped corresponds to, for example, step S921. The procedure for generating the video portion defined by the break position held in the break position holding means as the editing unit corresponds to, for example, step S923.

  Further, in claim 13 or 15, the delimiter position holding means corresponds to the mark table 700, for example. Further, the procedure for registering the separation position in the separation position holding means at the start of recording corresponds to, for example, step S913. The procedure for registering the break position in the break position holding means when a predetermined event is acquired corresponds to, for example, step S918. The procedure for registering the break position in the break position holding means when recording is stopped corresponds to, for example, step S921. The procedure for generating the video portion defined by the break position held in the break position holding means as the editing unit corresponds to, for example, step S923.

  The processing procedure described in the embodiment of the present invention may be regarded as a method having a series of these procedures, and a program for causing a computer to execute these series of procedures or a recording medium storing the program May be taken as

  As an application example of the present invention, for example, the present invention can be applied when a mark is added to a video being recorded by a video recording apparatus.

It is a figure which shows the example of whole structure of the video recording apparatus 300 in embodiment of this invention. It is a figure which shows an example of the recording state of the video file in the optical disk as a recording target of the video recording apparatus 300 of embodiment of this invention. It is a figure which shows the structural example of the movie atom in a QuickTime file format. It is a figure which shows the structural example of the edit atom in a QuickTime file format. It is a figure which shows an example of a function structure of the video recording apparatus 300 in embodiment of this invention. It is a figure which shows an example of an external appearance structure of the video recording apparatus 300 in embodiment of this invention. It is a figure which shows the structural example of the mark table 700 in embodiment of this invention. It is a figure which shows the usage example of the mark table 700 and the edit list table 576 in embodiment of this invention. It is a figure shown about an example of the processing content of the effect process part 140 in embodiment of this invention. It is a figure which shows an example of the process sequence of the video recording apparatus 300 in embodiment of this invention. It is a figure which shows an example of the procedure of the user input process in embodiment of this invention. It is a figure which shows an example of the procedure of the effect process in embodiment of this invention. It is a figure which shows an example of the procedure of the edit list table preparation process in embodiment of this invention. It is a figure which shows the example which acquires the event of having settled in the predetermined zoom range as an example of the event acquisition process in embodiment of this invention. It is a figure which shows the process sequence of the example which acquires the event of having settled in the predetermined zoom range as an example of the event acquisition process in embodiment of this invention. It is a figure which shows the example which acquires the event of having settled in the predetermined focus range by autofocus as another example of the event acquisition process in embodiment of this invention. It is a figure which shows the process sequence for implement | achieving an auto-focus function. It is a figure which shows the process sequence of the example which acquires the event of having settled in the predetermined focus range by autofocus as another example of the event acquisition process in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 110 User interface 120 Mark request part 121 Instruction acquisition part 122 Event acquisition part 130 Mark registration part 140 Effect processing part 150 Edit list creation part 300 Video recording device 310 Lens part 311 Zoom lens 312 Focus lens 315 Motor 319 Motor driver 321 Image sensor 322 Analog processor 323 A / D converter 324 Digital processor 325 Timing generator 329 Camera control unit 331 Video encoder 332 Audio encoder 333 File generator 334 File decoder 335 Video decoder 336 Audio decoder 337 Memory 338 Memory controller 339 System control unit 340 Disk drive 341 Error corrector 342 Data modulator / demodulator 343 Magnetic field modulation driver Bas 344 field head 345 servo circuit 346 motor 347 optical pickup 349 drive control section 370 optical disk 390 user input buttons 391 zoom wide button 392 zoom telephoto button 393 recording start button 394 playback start button 395 stop button 396 mark button

Claims (15)

A video recording device for recording video,
Delimiter position holding means for holding a delimiter position in the video;
Delimiter position registration request means for requesting registration of the delimiter position when recording the video;
Delimiter position registering means for registering the delimiter position in the delimiter position holding unit based on the request;
An image recording apparatus comprising: an edit unit generating means for generating a video portion defined by a break position held in the break position holding means as an edit unit. 2. The video recording apparatus according to claim 1, wherein the delimiter position registration request unit includes an instruction acquisition unit that acquires an instruction from a user, and requests registration of the delimiter position according to the instruction. 2. The delimiter position registration request unit includes an event acquisition unit that acquires a predetermined event that occurs when the video is recorded, and requests registration of the delimiter position according to the event. Video recording device. The video recording apparatus according to claim 3, wherein the event acquisition unit acquires an event indicating that the video is within a predetermined zoom range. The video recording apparatus according to claim 3, wherein the event acquisition unit acquires an event indicating that a predetermined period has elapsed after the video is within a predetermined zoom range. 4. The video recording apparatus according to claim 3, wherein the event acquisition means acquires an event indicating that the video is within a predetermined focus range. 4. The video recording apparatus according to claim 3, wherein the event acquisition unit acquires an event indicating that a predetermined period has elapsed after the video is within a predetermined focus range. 2. The video recording apparatus according to claim 1, wherein the separation position holding unit holds a relative time from a recording start position of the video as the separation position. 2. The video recording apparatus according to claim 1, further comprising video effect processing means for applying a video effect in units of video portions defined by the break positions held by the break position holding means. The video recording apparatus according to claim 1, wherein the editing unit is defined as a video portion sandwiched between the division positions. The video is recorded as a media data atom in the QuickTime format,
11. The video recording apparatus according to claim 10, wherein the editing unit is recorded as an edit restore tom in the QuickTime format. In a video recording apparatus comprising a separation position holding means for holding a separation position in a video to be recorded,
A procedure for registering the separation position in the separation position holding means at the start of recording;
A procedure for registering the break position in the break position holding means when an instruction from the user is acquired;
A procedure for registering the separation position in the separation position holding means when recording is stopped;
A video recording method comprising: generating a video portion defined by a break position held in the break position holding means as an editing unit. In a video recording apparatus comprising a separation position holding means for holding a separation position in a video to be recorded,
A procedure for registering the separation position in the separation position holding means at the start of recording;
A procedure for registering the separation position in the separation position holding means when a predetermined event is acquired;
A procedure for registering the separation position in the separation position holding means when recording is stopped;
A video recording method comprising: generating a video portion defined by a break position held in the break position holding means as an editing unit. In a video recording apparatus comprising a separation position holding means for holding a separation position in a video to be recorded,
A procedure for registering the separation position in the separation position holding means at the start of recording;
A procedure for registering the break position in the break position holding means when an instruction from the user is acquired;
A procedure for registering the separation position in the separation position holding means when recording is stopped;
A program for causing a computer to execute a procedure for generating, as an editing unit, a video portion defined by a break position held by the break position holding means. In a video recording apparatus comprising a separation position holding means for holding a separation position in a video to be recorded,
A procedure for registering the separation position in the separation position holding means at the start of recording;
A procedure for registering the separation position in the separation position holding means when a predetermined event is acquired;
A procedure for registering the separation position in the separation position holding means when recording is stopped;
A program for causing a computer to execute a procedure for generating, as an editing unit, a video portion defined by a break position held by the break position holding means.

Images