JP4882950B2 - Recording apparatus, recording method, and program - Google Patents

Description

  The present invention relates to a recording apparatus, a recording method, and a program.

  Conventionally, as described in, for example, Patent Document 1, Patent Document 2, and Patent Document 3 below, recorded data can be read from the recording medium even when the recording process on the recording medium is not normally completed. Such a device is known.

JP 2006-65912 A Japanese Patent Laying-Open No. 2005-243078 JP 2005-173758 A

  By the way, in the above-described conventional technique, recording of data such as input video is performed in units of clips. A clip is a unit of the number of times of imaging processing, and one clip is imaging processing from when the recording button (REC button) of the recording / reproducing apparatus is operated until the stop button (STOP button) is operated, or recording button (REC). This corresponds to the imaging process from the operation of the (button) to the operation of the pause button (PAUSE button).

  When video data is recorded on the optical disc, management data is created for each clip. When the disc is inserted, the management information related to all clips recorded on the optical disc is read. Therefore, if the number of clips recorded on the optical disc increases excessively, a lot of time is spent reading the management information, and recording or playback is performed. The standby time for starting becomes longer. For this reason, a certain limit is imposed on the number of clips that can be recorded. In the case of an optical disc, only the number of clips of 300 clips or less can be recorded on the optical disc.

  However, if the number of clips that can be recorded is limited, for example, if the operation of recording to pause to recording to pause is repeated in a short time, even if the substantial recording time is short, the clip There is a problem that the number increases and the remaining amount of clips that can be recorded decreases.

  For this reason, when continuous recording is performed by operating the pause button, it is conceivable that new recording is performed in the same clip as the video captured immediately before without creating a new clip. . According to such a method, even when the recording is repeatedly performed by operating the pause button, a plurality of recordings are performed in the same clip, so that the number of recorded clips can be suppressed. It is.

However, when a plurality of recordings are performed in the same clip, it is assumed that a problem occurs when the recorded data is read when the recording process on the recording medium is not normally completed. Specifically, in the method described in the above-mentioned patent document, since recorded data is read by a salvage marker recorded during video data (annual ring data), immediately after resuming recording after pausing If an abnormality such as a power interruption occurs, the data recorded immediately before the temporary stop may be lost. Usually, the user thinks that the data recorded before the suspension is normally recorded, and therefore the user feels uncomfortable if the data before the suspension is lost due to an abnormality after the suspension.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to record when a plurality of data can be recorded in a single clip set on a recording medium. It is an object of the present invention to provide a new and improved recording apparatus, recording method, and program capable of reading recorded data from a recording medium even when processing is not normally completed.

  In order to solve the above-described problem, according to an aspect of the present invention, a plurality of pieces of separated data separated in time series are continuously recorded in a single clip for data recording set on a recording medium. A continuous recording section and a data copying section for copying the last recorded data of the one separated data at the beginning of the next separated data when the next separated data is recorded after the recording of the first separated data is completed And a data deleting unit that logically deletes the last recorded data of the one separated data, and a data restoring unit that restores the logically deleted data when an abnormality occurs. .

  According to the above configuration, in the recording apparatus in which a plurality of pieces of separated data separated in time series are continuously recorded in a single data recording clip set on the recording medium, one piece of separated data is recorded. When the next separated data is recorded after ending, the data recorded at the end of one separated data is copied to the beginning of the next separated data. The data recorded at the end of one piece of separated data is logically deleted. When an abnormality occurs, the logically deleted data is restored. Therefore, when an abnormality occurs, it is possible to reliably restore the data arranged at the boundary portion of the separated data recorded adjacently.

  The separated data may include at least video data and audio data, and may be data separated in time series by operating a pause button that temporarily stops recording. According to this configuration, in a recording apparatus that records separated data composed of video data and audio data in a single clip, the data can be reliably restored when an abnormality occurs.

  Each of the separated data includes a plurality of pieces of divided data divided by time, and the data copying unit sets the divided data recorded at the end of the one separated data at the beginning of the next separated data. The copy and the data deletion unit may logically delete the divided data recorded at the end of the one separated data. According to this configuration, it is possible to delete only the division data necessary for data restoration.

  The data restoration unit may restore the deleted data when an abnormality occurs immediately after the recording of the next separated data is started. According to such a configuration, even if an abnormality occurs immediately after the start of recording of the next separated data, it is possible to reliably restore the immediately preceding separated data.

  In addition, a restoration marker recording unit that records a restoration marker for restoring the division data together with the division data is recorded, and a predetermined number of the restoration markers are recorded after the recording of the next separated data is started. If an abnormality occurs after the recovery, the next separated data may be restored by the restoration marker. According to this configuration, when an abnormality occurs after a predetermined number of restoration markers have been recorded since the start of recording of the next separation data, it is possible to restore the next separation data using the restoration marker. Become.

In order to solve the above-described problem, according to another aspect of the present invention, a plurality of separated data separated in time series in a single clip for data recording set on a recording medium is continuously generated. In this recording method, after the recording of one separated data is completed, the next recorded data is copied at the beginning of the next separated data when the next separated data is recorded. A copying step, a deletion step of logically deleting the last recorded data of the one separated data, a restoration step of restoring the logically deleted data when an abnormality occurs,
A recording method is provided.

  According to the above configuration, in the method of continuously recording a plurality of separated data separated in time series in a single clip for data recording set on a recording medium, recording of one separated data is completed After that, when recording the next separated data, the data recorded at the end of the one separated data is copied to the beginning of the next separated data. The data recorded at the end of one piece of separated data is logically deleted. When an abnormality occurs, the logically deleted data is restored. Therefore, when an abnormality occurs, it is possible to reliably restore the data arranged at the boundary portion of the separated data recorded adjacently.

  The separated data may include at least video data and audio data, and may be data separated in time series by operating a pause button that temporarily stops recording. According to such a configuration, when separating data composed of video data and audio data is recorded in a single clip, the data can be reliably restored when an abnormality occurs.

  Each of the separated data is composed of a plurality of divided data divided by time, and in the copying step, the divided data recorded at the end of the one separated data is copied to the beginning of the next separated data. In the deletion step, the section data recorded at the end of the one separated data may be logically deleted. According to this configuration, it is possible to delete only the division data necessary for data restoration.

  In the restoration step, the deleted data may be restored when an abnormality occurs immediately after the recording of the next separated data is started. According to such a configuration, even if an abnormality occurs immediately after the start of recording of the next separated data, it is possible to reliably restore the immediately preceding separated data.

  And a step of recording a restoration marker for restoring the division data together with the division data, and an abnormality occurs after a predetermined number of the restoration markers are recorded after the start of recording of the next separated data. If this occurs, the next separated data may be restored by the restoration marker. According to this configuration, when an abnormality occurs after a predetermined number of restoration markers have been recorded since the start of recording of the next separation data, it is possible to restore the next separation data using the restoration marker. Become.

  In order to solve the above-described problem, according to another aspect of the present invention, a plurality of separated data separated in time series in a single clip for data recording set on a recording medium is continuously generated. Means for copying the data recorded at the end of the first separated data at the beginning of the next separated data when the next separated data is recorded after the recording of the first separated data is completed, There is provided a program for causing a computer to function as means for logically deleting data recorded at the end of one separated data and means for restoring the logically deleted data when an abnormality occurs.

  According to the above configuration, in the program for continuously recording a plurality of separated data separated in time series in a single data recording clip set on the recording medium, recording of one separated data is completed. After that, when recording the next separated data, the data recorded at the end of the one separated data is copied to the beginning of the next separated data. The data recorded at the end of one piece of separated data is logically deleted. When an abnormality occurs, the logically deleted data is restored. Therefore, when an abnormality occurs, it is possible to reliably restore the data arranged at the boundary portion of the separated data recorded adjacently.

  According to the present invention, when a plurality of data can be recorded in a single clip set on the recording medium, the recorded data is recorded from the recording medium even when the recording process is not normally completed. It can be read out.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIG. 1 is a schematic diagram showing a configuration example of a recording / reproducing apparatus 100 according to an embodiment of the present invention, and shows a configuration example of a recorder that records data on a medium 200 such as an optical disc. As shown in FIG. 1, the recording / reproducing apparatus 100 includes a video recording / reproducing memory 102, a video recording / reproducing block 104, a proxy (PROXY) recording / reproducing DSP (Digital Signal Processor) 106, and a control task 108. ing. A medium (recording medium such as an optical disk) 200 for storing a video signal converted into digital data is inserted into the recording / reproducing apparatus 100. In this embodiment, an optical disk is illustrated as the medium 200.

  The video recording / playback memory 102 is a memory for storing data read from the optical disc 200 and data to be written to the optical disc 200. The video recording / playback memory 102 stores data obtained by converting a video signal into digital data. The video recording / playback memory 102 has a main video memory area 102a and a PROXY video memory area 102b. Data sent from the video recording / reproducing block 104 is stored in the main video memory area 102a. In the PROXY video memory area 102b, data sent from the PROXY recording / playback DSP 106 is stored.

  In the recording / reproducing apparatus 100 of the present embodiment, the captured video is compressed at a higher compression rate than the main line data, in addition to the main line data compressed at a relatively low compression rate so as to minimize the deterioration of image quality. The proxy video data (low-resolution video data) is recorded on the optical disc 200. In addition to the main line audio data, high-compression proxy audio data (audio data) and metadata are created as necessary for the captured audio. Proxy video data and proxy audio data are data for performing so-called non-linear editing that is generally performed in recent years, and are high-compression, low-resolution audio, video, and metadata for editing and high-speed access. . Proxy video data, proxy audio data, and the like are used as editing materials after being taken into a personal computer, for example.

  The video recording / playback block 104 receives input of video / audio data (hereinafter referred to as input video). The input video is a video or audio signal acquired by a video camera (not shown), a video or audio signal reproduced from an arbitrary recording medium (not shown), or the like. The video recording / playback block 104 receives the operation system control from the control task 108, converts (encodes) the input video to predetermined digital data, records it on the optical disc 200, and reads out the data recorded on the optical disc 200. And output as a video signal. In response to a command from the video recording / reproducing block 104, the video recording / reproducing memory 102 records the stored data on the optical disc 200, and stores the data read from the optical disc 200.

  The PROXY recording / playback DSP 106 receives the operation system control from the control task 108, converts (encodes) the signal received from the video recording / playback block 104 into a PROXY image during ENC operation, and writes it to the video recording / playback memory 102. Do. Further, during the DEC operation, the PROXY image is converted (decoded) into video output data (DEC image) and output to the display device 300 such as a monitor.

  The control task 108 controls the video recording / playback block 104 and the PROXY recording / playback DSP 106 in accordance with a recording instruction input from the operation panel 400. The operation panel 400 is provided with a recording button (REC) 402, a pause button (PAUSE) 404, and a recording stop button (STOP) 406.

  When the recording button (REC) 402 is pressed (during recording), the control task 108 switches the PROXY recording / playback DSP 106 to the ENC operation. Further, the control task 108 performs control so that the video recording / playback block 104 converts the input signal into a recording format, stores the converted input signal in the video recording / playback memory 102, and writes it to the optical disc 200 during recording. Do. The control task 108 performs write control when writing to the optical disc 200 and performs read control when reading from the optical disc 200.

  FIG. 2 is a schematic diagram showing a data flow in the configuration of FIG. In FIG. 2, the arrows indicated by broken lines indicate the flow of data when the main line drawing is recorded. Moreover, the arrow shown with a dashed-dotted line has shown the flow of the data at the time of recording a PROXY image.

  As shown in FIG. 2, when a main line image is recorded, the input video is sent from the video recording / playback block 104 to the video recording / playback memory 102 and recorded on the optical disc 200. The input video is output from the video recording / playback block 104 to the display device 300 via the PROXY recording / playback DSP 106.

  On the other hand, when a PROXY image is recorded, an ENC operation is performed, and video data (ENC image) is sent from the PROXY recording / playback DSP 106 to the video recording / playback memory 102 and recorded on the optical disc 200.

  The recording / reproducing apparatus 100 includes a pickup unit (not shown) for recording information on the optical disc 200. At the time of recording, the pickup unit records a recording signal on the optical disc 200 with laser light. At the time of reproduction, the optical disc 200 is irradiated with laser light, and the reflected light is photoelectrically converted to generate a current signal. In addition, the recording / reproducing apparatus 100 includes a signal processing unit that modulates data to be recorded on the optical disc 200 to generate a recording signal and supplies the recording signal to the pickup unit. The signal processing unit also demodulates the signal read by the pickup unit to generate reproduction data.

  FIG. 3 is a schematic diagram showing data written on the optical disc 200 in the recording / reproducing apparatus 110 of the present embodiment. The recording / reproducing apparatus 100 according to the present embodiment can write data continuously in one clip by operating a pause button (REC PAUSE) 404. FIG. 3 shows data (separated data) written continuously in one clip by this operation.

  As shown in FIG. 3, first, recording of take 1 is started (REC START) by first pressing the recording button 402, and then recording of take 1 is ended when the pause button 404 is pressed down. . Next, when the pause button 404 is pressed again or the recording button 402 is pressed, recording of the take 2 is started (REC START). In this way, data of take 1 (Take 1), take 2 (Take 2)... Take 4 (Take 4) can be sequentially recorded in one clip. Such a continuous recording (continuous recording) means that a new recording is performed within the same clip by depressing the pause button 404 or the recording button 402 after depressing the pause button 404 during recording. ; Continuous REC). A REC START essential mark (REC START EM) indicating the boundary position is given to the boundary position of each take. When the recording stop button (STOP) 406 is pressed, the clip ends. When the recording button 402 is pressed next, recording of the next clip is started.

  Therefore, as shown in FIG. 3, when continuous recording is performed by operating the pause button 404, a plurality of takes can be recorded in one clip. Thereby, even when a plurality of video scenes are recorded, the number of recorded clips does not increase, and a large number of videos can be recorded until the number of clips reaches the upper limit.

  The data shown in FIG. 3 is recorded in the file recording area of the optical disc 200. Management information (file system) is recorded in the file system recording area of the optical disc 200. The management information is information indicating what kind of file is recorded in the file recording area, and is referred to when the file is read from the optical disc.

  Files such as video / audio data recorded on the optical disc 200 are managed by a file system. For example, when reproducing the optical disc 200, the recording / reproducing apparatus 100 refers to the file system recorded on the optical disc 200, records one or more file names recorded on the optical disc 200, and records each file on the optical disc 200. Get location etc. When the user instructs the reproduction of the desired file, the recording position of the designated file is specified based on the file system, and the video / audio data constituting the file is read from the recording position and reproduced. Data recorded in the file recording area is managed as a file by the file system, and managed as logical data based on a directory structure or the like.

  FIG. 4 is a block diagram showing a functional configuration of the control task 108. As shown in FIG. 4, the control task 108 includes a continuous recording unit (continuous recording unit) 108a, a salvage marker recording unit 108b, a salvage marker detecting unit 108c, a data copying unit 108d, a data deleting unit 108e, and a data restoring unit 108f. It is equipped with. When continuous recording is performed by operating the pause button 404 described above, the continuous recording unit (continuous recording unit) 108a performs control to continuously record data in a single clip. . The functions of the salvage marker recording unit 108b, the salvage marker detection unit 108c, the data copying unit 108d, the data deletion unit 108e, and the data restoration unit 108f will be described later. The functional configuration of the control task 108 illustrated in FIG. 4 can be realized by a program that causes an arithmetic processing unit (CPU or the like) to function, for example.

  FIG. 5 shows a timing at which input video data is input, a timing at which data is stored in the video recording / playback memory 102, a timing at which data is written to the optical disc 200, and a control task in the recording / playback apparatus 100 according to this embodiment. It is a timing chart which shows the timing of operation | movement of 108 in parallel.

  As shown in FIG. 5, a predetermined delay (time lag) occurs in the timing at which data is stored in the video recording / playback memory 102 with respect to the timing at which input video data is input. Similarly, a predetermined delay (time lag) occurs in the timing at which data is written into the optical disc 200 with respect to the timing at which data is stored in the video recording / playback memory 102.

  Recording start time point 1 (REC) shown in FIG. 5 is a time point when the recording button 402 is pressed by the user and the recording operation is started, and recording of take 1 shown in FIG. 3 starts at this timing. The video recording / playback memory 102 stores data called annual ring data as data to be written to the optical disc 200. Here, one annual ring data corresponds to an input video every 2 seconds. The annual ring data includes audio data, video data, proxy data, and metadata, and a plurality of these data are arranged in time series in the annual ring data every 2 seconds. The annual ring data stored in the video recording / playback memory 102 is sequentially written on the optical disc 200.

  The recording stop time point shown in FIG. 5 is a time point when the user presses the pause button 404 and recording of take 1 is stopped. In the example of FIG. 5, the recording stop time is in the middle of input of input video 5. For this reason, the data of the annual ring 5 recorded corresponding to the input 5 is less than the data for 2 seconds. Therefore, the data amount of the annual ring 5 recorded on the optical disc 200 is smaller than the data amount of the other annual rings 1 to 4.

  When the pause button 404 is pressed at the time of recording stop, the state of the control task 108 becomes a creation state of a fill (Fill), a footer (Footer), and a header (Header). Stores footer and header data (management information). Of the management information, “Fill” is data for immediately entering dummy data of a specific size and rounding the size in order to efficiently manage memory and media. The header is an area for storing information (recording format, size, start time code, etc.) necessary for reproducing the corresponding clip. The footer is data indicating the end of the clip. The stored fill, footer, and header data are written to the optical disc 200. After the fill, footer, and header creation states, the control task 108 enters a media write wait state, and the video recording / playback memory 102 enters a write wait state.

  When the recording button 402 is pressed again at the recording start time point 2 (REC) and continuous recording is performed, the input video (after input 12) sent to the video recording / playback memory 102 after waiting for media writing is recorded. Is stored. Immediately after the media write waiting time, the data of the annual ring 5 which is less than 2 seconds in the take 1 is stored again in the video recording / reproducing memory 102, and a part of the data of the input 12 ( Input #) is added. Thereby, the data of the annual ring 5 is converted into data for 2 seconds (annual ring 5 + input #) and stored in the video recording / reproducing memory 102. After the data (annual ring 5 + input #), the data of the annual ring 7 and the annual ring 8 corresponding to the input image for 2 seconds are sequentially stored. Data stored in the video recording / playback memory 102 is written to the optical disc 200 with a certain delay. As described above, the data of the last annual ring 5 of the take 1 is copied at the beginning of the take 2 and recorded on the optical disc 200. This processing is performed by the data copying unit 108d in FIG.

  Next, the salvage function when an abnormality occurs according to the present embodiment will be described. FIG. 6 is a schematic diagram showing a method of restoring data when an abnormality occurs using salvage markers SM written before and after annual ring data.

  FIG. 6A shows a state in which the power is cut off due to an abnormality while the annual ring data N + 1 is being written immediately after the take 2 recording is started. Although not shown in FIG. 5 for convenience of explanation, a salvage marker SM is written between each annual ring data N, N + 1,..., And one salvage marker is recorded corresponding to each annual ring data. The The recording of the salvage marker SM is controlled by the salvage marker recording unit 108b of FIG.

  The salvage marker includes a recognition pattern (salvage ID) indicating that this data is a salvage marker, identification information (for example, a file name) for specifying a file name to which the data belongs. The recording / reproducing apparatus 100 can detect the salvage marker by searching the salvage ID from the data read from the file recording area of the optical disc 200. Specifically, the detection of the salvage marker is controlled by the salvage marker detection unit 108c in FIG. For example, when the power supply is cut off due to the removal of the battery and the recording process is not normally completed, that is, when the data recorded on the optical disk is not registered in the file system as one file, after the power is restored In this step, with reference to the salvage marker, the recording position on the optical disc 200 of the data recorded until the recording process is interrupted is specified. Based on this, a file including data recorded until the recording process is interrupted is registered in the file system. As a result, even when the recording process is not normally completed, the data recorded on the optical disc 200 can be reproduced before the recording process is interrupted.

  When the insertion of the optical disc 200 interrupted in the middle without detecting the end of the recording process is detected, the recording / reproducing apparatus 100 searches the optical disc 200 for a salvage ID. Then, the recording / reproducing apparatus 100 determines the file name of the annual ring data recorded after the salvage marker based on the identification information for specifying the file name included in the salvage marker.

  For example, in the case of full salvage processing (processing for restoring a file system based only on information recorded on the optical disc 200) described in Patent Document 1, the recording / reproducing apparatus 100 is stopped due to an abnormality. However, the annual ring data up to the second annual ring can be restored from the last recorded salvage marker. Further, in the case of the quick salvage process described in Patent Document 1 (a process for restoring a file system based on information in a nonvolatile memory included in the recording / reproducing apparatus 100 and a salvage marker recorded on the optical disc 200), The annual ring data up to one year before the salvage marker recorded last can be restored.

  When the user presses the pause button 404, information up to the header shown in FIG. Thereafter, when the pause button 404 is pressed again, take 2 is started, and as described with reference to FIG. 5, the data of the annual ring N + 1 is written together with the salvage marker SM written in front of the annual ring N + 1 in take 1. Thereafter, the data of annual ring N + 2, annual ring N + 3,... Are sequentially written.

  When the power interruption shown in FIG. 6A occurs, the salvage marker corresponding to the data of the annual ring N + 1 written in take 2 is not written. However, in take 1, since the data of annual ring N + 1 and two salvage markers SM are written immediately after that, the data of annual ring N + 1 can be restored. Therefore, as shown in FIG. 6B, data up to the end of take 1 can be restored.

  Similarly, FIG. 6C shows a state in which the power interruption occurs after the data of the annual ring N + 2 is written to the optical disc 200 in the take 2 and the subsequent salvage marker SM is written. At this time, in the case of quick salvage, it is possible to restore to the annual ring N + 2 before the last written salvage marker. In the case of full salvage, it is possible to restore up to data of annual ring N + 1.

  FIG. 6D shows a state where data is restored by salvage in the case of FIG. In the case of quick salvage, the data up to the annual ring N + 2 is restored, and the footer and header written in the last take 1 are written. The annual ring N + 1 data, footer, and header data written in take 1 physically exist on optical disc 200 but are logically deleted.

  The salvage function as described above will be described in detail. FIG. 7 shows a salvage state when the power is turned off at the timing of the power-off 1 shown in FIG.

  FIG. 7A shows data written on the optical disc 200 with the position of (1) in FIG. 5 as the end point. FIG. 7B shows data written on the disc with the position of (2) in FIG. 5 as the end point. As shown in FIG. 7B, in the salvage of the present embodiment, after the take 1 is finished and the header is written, when the data of the take 2 is written, the annual ring 5 and the fill written at the end of the take 1 are filled. , Footer and header data are logically deleted. As described above, the data of the annual ring 5 of the take 1 is written again at the beginning of the take 2, and at the end of the take 2, the fill, footer, and header data are written in the same manner as at the end of the take 1. When a clip ends, the fill, footer, and header data recorded in the last take is left as management information for that clip, and the fill, footer, and header data for other takes are logically deleted. It becomes the state.

  When the power interruption occurs at the timing of the power interruption 1 in FIG. 5, the power interruption occurs while the data of the annual ring 5 is being written, so that the salvage marker for restoring the annual ring 5 is insufficient. Become. For this reason, in this embodiment, as shown in FIG. 7C, the data of the annual ring 5, the fill, footer, and header data in the take 1 that is originally logically deleted is restored. Data restoration is controlled by the data restoration unit 108f shown in FIG. Then, the data of the annual ring 5 that was being written in the take 2 is logically deleted.

  As a result, in the recording / reproducing apparatus 100 of the present embodiment in which a plurality of data is written in the same clip, if the power is cut off immediately after the start of writing a new take, the data written up to the immediately preceding take can be reliably confirmed. It is possible to restore to.

  FIG. 8 shows a salvage state when the power is turned off at the timing of the power-off 2 shown in FIG. Here, FIG. 8A shows data written on the optical disc 200 with the position of (1) in FIG. 5 as the end point. FIG. 8B shows data written on the optical disc 200 with the position of (3) in FIG. 5 as the end point.

  When the power interruption occurs at the timing of the power interruption 2 in FIG. 5, data is written on the optical disk 200 up to the annual ring 5, the annual ring 6, and the annual ring 7 as shown in FIG. 8B. Therefore, as described with reference to FIGS. 6C and 6D, it is possible to restore at least the data up to the annual ring 5 of the take 2. The annual ring 5 data, fill, footer, and header data in take 1 are logically deleted.

  As described above, in the recording / reproducing apparatus 100 of the present embodiment, the video data immediately before the end of one-take shooting is logically recorded in the recording / reproducing apparatus 100 capable of recording a plurality of input videos in one clip. Delete it and record it at the beginning of the next take. For this reason, when the power interruption occurs immediately after the start of the next take, it is possible to completely restore the data of the finished take by restoring the logically deleted data. In addition, if a power interruption occurs after recording multiple annual ring data after the start of the next take, restore the annual ring data immediately before the power interruption using the salvage marker recorded corresponding to the annual ring data. Is possible.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

It is a schematic diagram which shows the structural example of the recording / reproducing apparatus which concerns on one Embodiment of this invention. FIG. 2 is a schematic diagram showing a data flow in the configuration of FIG. 1. It is a schematic diagram which shows the data written on the optical disk in the recording / reproducing apparatus of this embodiment. It is a block diagram which shows the function structure of a control task. 4 is a timing chart showing in parallel a timing at which input video data is input, a timing at which data is stored in a video recording / playback memory, a timing at which data is written to an optical disc, and an operation timing of a control task. It is a schematic diagram which shows the method of decompress | restoring data at the time of abnormality using the salvage marker SM written before and after annual ring data. It is a schematic diagram which shows the salvage state when a power supply is cut off at the timing of the power-off 1 shown in FIG. It is a schematic diagram which shows the salvage state when a power supply is cut off at the timing of the power-off 2 shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Recording / reproducing apparatus 108 Control task 108a Continuous recording part 108b Salvage marker recording part 108c Salvage marker detection part 108d Data copying part 108e Data deletion part 108f Data restoration part

Claims (11)

A continuous recording unit for continuously recording a plurality of separated data separated in time series in a single clip for data recording set in a recording medium;
A data copying unit for copying the data recorded at the end of the one separated data at the beginning of the next separated data when recording the next separated data after the recording of the one separated data is completed;
A data deletion unit that logically deletes data recorded at the end of the one separated data;
A data restoration unit for restoring the logically deleted data when an abnormality occurs;
A recording apparatus comprising:   The recording according to claim 1, wherein the separated data includes at least video data and audio data, and is data separated in time series by operation of a pause button for temporarily stopping recording. apparatus. Each of the separation data is composed of a plurality of division data divided every time,
The data copying unit copies the section data recorded at the end of the one separated data to the beginning of the next separated data,
The recording apparatus according to claim 1, wherein the data deletion unit logically deletes the division data recorded at the end of the one separated data.   The recording apparatus according to claim 1, wherein the data restoring unit restores the deleted data when an abnormality occurs immediately after the recording of the next separated data is started. Along with the division data, a restoration marker recording unit that records a restoration marker for restoring the division data,
When an abnormality occurs after a predetermined number of the restoration markers have been recorded since the start of recording of the next separation data, the next separation data is restored by the restoration marker, The recording apparatus according to claim 3. A recording method for continuously recording a plurality of separated data separated in time series in a single clip for data recording set in a recording medium,
A copy step of copying the data recorded at the end of the one separated data at the beginning of the next separated data when recording the next separated data after the recording of the one separated data is completed;
A deletion step of logically deleting the last recorded data of the one separated data;
A restoration step of restoring the logically deleted data when an abnormality occurs;
A recording method comprising:   7. The recording according to claim 6, wherein the separated data includes at least video data and audio data, and is separated in time series by operation of a pause button for temporarily stopping recording. Method. Each of the separation data is composed of a plurality of division data divided every time,
In the copying step, the section data recorded at the end of the one separated data is copied at the beginning of the next separated data;
The recording method according to claim 6, wherein in the deleting step, the segment data recorded at the end of the one separated data is logically deleted.   The recording method according to claim 6, wherein in the restoration step, the deleted data is restored when an abnormality occurs immediately after the recording of the next separated data is started. The step of recording a restoration marker for restoring the division data together with the division data,
When an abnormality occurs after a predetermined number of the restoration markers have been recorded since the start of recording of the next separation data, the next separation data is restored by the restoration marker, The recording method according to claim 8. Means for continuously recording a plurality of separated data separated in a time series in a single clip for data recording set in a recording medium;
Means for copying the data recorded at the end of the one separated data at the beginning of the next separated data when recording the next separated data after the recording of the one separated data is completed;
Means for logically deleting the last recorded data of the one separated data;
Means for restoring the logically deleted data when an abnormality occurs;
As a program to make the computer function as.

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