JP2001350655A - Data record reproducing device and recorded data processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the progress state of a compile process easily graspable and efficiently conduct the compile process. SOLUTION: A management section 40 generates the management information on a record position when recording a plurality of time sequence data groups in a disk array section 30 and generates a first concatenated information for reading data based on the edit information and the management information and second concatenated information for continuing the data indicated by the edit information when receiving the edit information from an edit device 70. An input/output process section 20 discriminates the data for changing the record position from the first and second concatenated information, reads the data based on the first concatenated information, and rerecords the data based on the second concatenated information. At rerecord processing, the progress information indicating the process progress position is generated, and the data to be recorded next are selected. A process progress state can be grasped by the progress information, and the process can be resumed from the middle by the progress information even if the progress is interrupted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a data recording / reproducing apparatus and a recorded data processing method. More specifically, management information for managing a recording position when recording a plurality of time-sequential data groups on a randomly accessible recording medium is created, and based on editing information and management information indicating data used as one file. Creating first link information for reading out the data indicated by the edit information and second link information for continuing the recording position of the data indicated by the edit information;
A re-recording process of determining data for changing a recording position based on the first and second connection information and recording data from a position based on the first connection information to a position based on the second connection information is determined. This is repeated until the re-recording of the data is completed, and in the case of the re-recording process, progress information indicating the progress position of the process is created, and the data to be re-recorded next is selected.

[0002]

2. Description of the Related Art In recent years, with the increase in the number of channels for providing information, there has been an increasing demand for a recording / reproducing apparatus capable of simultaneously recording or reproducing a plurality of video / audio data or reproducing while recording. In order to satisfy this demand, a device called an AV (Audio and / or Video) server capable of recording and reproducing video / audio data and the like using a randomly accessible recording medium, for example, a disk using magnetism or light, has become widespread. It is getting. In addition, AV servers used in broadcasting stations and the like are designed to have a large capacity so that materials can be recorded for a long time with high image quality and high sound quality.

[0003] In producing a program or the like, a broadcasting station or the like extracts and uses only a desired portion from video data and audio data of a material recorded in an AV server. Here, when there are many materials to be used for the program, a process of reading only the data to be used from the video data and audio data of the materials recorded in the AV server is frequently performed. Therefore, the ratio of the time required for reading data from the recording medium to the time for reading data from the recording medium is increased, and the AV server cannot be used efficiently.

For this reason, video data and audio data of a material used for a program are consecutively arranged in advance in an empty area where no data is recorded by using a period in which data recording / reproducing processing in the AV server has a margin. The compile process for re-recording is performed as described above, and by reading out the compile-processed data, video data and audio data can be continuously and efficiently read.

[0005]

By the way, in the conventional compiling process, the compiling process is sequentially performed for each channel as shown in FIG. For example, when the process of re-recording the data so that the video data DV-0 to DV-k for the time ta of the video channel "V" is continuous is completed, the audio channel "Aa" is then re-recorded for the time ta. Audio data DAa
Re-recording processing is performed so that -0 to DAa-m are continuous. When the re-recording process for the audio channel “Aa” is completed, the audio data DAx-0 is output for the audio channel “Ax”.
The re-recording process is performed so that ~ DAx-n continues.

In such a compiling process, it is necessary to grasp the progress of the compiling process based on the number of channels for which the compiling process has been completed, and it is easy to determine how long the compiling process has been completed. Cannot be determined.

In such a compile process, the compile process of the video / audio data of the material used in the edited program or the like is not completed sequentially as time passes, so the compile process is interrupted in the middle. For example, when a low-priority compile process is interrupted to prioritize another data recording process or a data reproduction process, or when the power supply is stopped and the compile process is interrupted Then, the compile process was performed again from the beginning. For this reason, even if the compiling process is performed halfway, the result of this process is not effectively utilized, and the compiling process cannot be performed efficiently.

In view of the above, the present invention provides a data processing apparatus and a recording data processing method capable of easily grasping the progress of the compile processing and efficiently performing the compile processing.

[0009]

A data recording / reproducing apparatus according to the present invention records a plurality of time-ordered data groups inputted on a recording medium which can be randomly accessed, or records a plurality of time-ordered data groups to be output. An input / output processing unit for reading from the medium; and a management unit for creating and holding management information for managing the recording positions of the plurality of time-sequential data groups recorded on the recording medium. For reading out the data indicated by the editing information based on the management information and the editing information indicating the data to be used as one file from the plurality of time-sequential data groups recorded on the supplied recording medium. The first linking information and the second linking information for making the recording position of the data indicated by the editing information continuous are created and supplied to the input / output processing means. The connection information and the data for changing the recording position determined on the basis of the second connection information, second read data from the position based on the first connection information recording medium
The re-recording process of recording at the position of the recording medium indicated by the link information is repeatedly performed until the re-recording of the determined data is completed, and at the time of the re-recording process, the progress information indicating the progress position of the process. Is generated and the data to be re-recorded is selected.

In the recording data processing method, when recording a plurality of time-ordered data groups on a randomly accessible recording medium, management information for managing a recording position is created, and one of the plurality of time-ordered data groups is generated from the plurality of time-ordered data groups. Based on the editing information and the management information indicating the data to be used as one file, the first link information for reading the data indicated by the editing information and the second linking the recording position of the data indicated by the editing information. Creating link information, determining data whose recording position is to be changed based on the first link information and the second link information, reading data from the position of the recording medium based on the first link information, and reading the read data. The re-recording process of recording at the position of the recording medium based on the second link information is repeatedly performed until the re-recording of the determined data is completed. It is for selecting the data to be next recorded again to create a progress information indicating a row position.

According to the present invention, when recording a time-ordered data group such as video data and audio data on a randomly accessible recording medium such as a hard disk, management information for managing data recording positions on the hard disk is created. Is done. Further, first connection information for reading out the data indicated by the editing information is created based on the editing information and the management information indicating the data used as one file.
Also, second link information for making the recording positions of the data used as one file continuous is created, and the data whose recording position is to be changed is determined based on the first and second link information. The process of re-recording the discriminated data from the position based on the first connection information to the position based on the second connection information is sequentially performed, and at the time of the re-recording process, for example, a frame indicating a progress position of the process is displayed. Number information is created, and data to be re-recorded next is selected based on the frame number information. In the case of performing re-recording processing of video data and audio data of a plurality of channels, re-recording is performed next based on frame number information of each channel so that the variation in the progress of the re-recording processing among the plurality of channels is reduced. The data is selected.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a diagram showing a configuration of a data processing device, for example, an AV server. AV
The server 10 includes an input / output processing unit 20 and a disk array unit 3
0 and the operation management unit 40.

A plurality of input / output processing units 20 are provided.
The plurality of input / output processing units 20-1, 20-2, ..., 20
-p records the time-ordered data group input from the outside in the disk array unit 30 and reads out the data recorded in the disk array unit 30 and outputs the time-ordered data group to the outside. For example, in the input / output processing unit 20-1, a video and / or audio data signal SD of a material used to compose a program or the like input as a time-sequential data group is provided.
After encoding the in-1, the data is recorded in the disk array unit 30. Also, the data recorded in the disk array unit 30 is read out, decompressed, and output as a video and / or audio data signal SDout-1. . (Hereinafter, the video and / or audio data signal of the input material is referred to as “material input data signal” and the video and / or audio data signal of the output material is referred to as “material output data signal”). In addition, other input / output processing units similarly perform input / output processing of the material input data signal SDin. The material input data signal SDin and the material output data signal SDout are transmitted as a serial digital interface (SDI) format standardized by, for example, SMPTE259M.

Here, the input / output processing units 20-1, 20-2,.
.., 20-p have the same configuration, and in the following description, only the input / output processing unit 20-1 will be described. The input / output processing unit 20-1 includes an external interface circuit 201, an encode / decode circuit 202, a buffer memory 203, and an input / output control circuit 205.

The external interface circuit 201 is for performing data transmission with the outside, and converts the supplied material input data signal SDin-1 into the encode / decode circuit 20.
Feed to 2. Also, the encoding / decoding circuit 202
When the material output data signal SDout-1 is supplied from, it is output to the outside as a predetermined transmission format.

The encoding / decoding circuit 202 compresses the data amount of the supplied material input data signal SDin-1 and records the recording data signal W to be recorded in the disk array unit 30.
D-1 is generated and supplied to the buffer memory 203. The reproduction data signal RD-1 read from the disk array unit 30 and stored in the buffer memory 203 is expanded and supplied to the external interface circuit 201 as a material output data signal SDout-1.

The buffer memory 203 temporarily holds the recording data signal WD-1 and the reproduction data signal RD-1. Here, the buffer memory 203 has a plurality of banks, and the recording data signal WD held in one bank is stored.
-1 is written to the disk array unit 30 while the reproduced data signal RD-1 held in another bank is output, or the reproduced data signal RD-1 is read from the disk array unit 30 and stored in one bank. During the holding, the recording data signal WD-1 based on the material input data signal SDin-1 can be held in another bank.

In the input / output control circuit 205, the operation management unit 4
A control signal CTB is generated based on the operation control signal CTA supplied via the interface 406 for the input / output processing unit of 0. By supplying the generated control signal CTB to the external interface circuit 201, the encoding / decoding circuit 202, and the buffer memory 203, the operation of each circuit is controlled. In addition, by generating a control signal CTC based on the operation control signal CTA and supplying the control signal CTC to the disk array unit 30, the operation of the disk array unit 30 is controlled.

The disk array section 30 is composed of a signal recording / reproducing apparatus using a recording medium capable of non-linear access, for example, a paper published in 1988 by Patterson et al. (“ACase for Redundant Arrays of Inexpensive”).
Disks (RAID) ", ACMSIGMOND Conferen
ce, Chicago, III, Jun. 1-3, 1988.), a RAID (Redundant Arrays of Inexpensive) constructed using a plurality of hard disk drives.
Disks). This disk array unit 30
Then, based on the control signal CTC from the input / output control circuit 205, the writing of the recording data signal WD-1 and the reading of the reproduction data signal RD-1 are performed.

The operation management unit 40 includes an external interface circuit 401, a CPU (Central Processing Unit) 402,
ROM (Read only Memory) 403, RAM (Random A)
ccessMemory) 404, an SRAM 405, and an interface 406 for an input / output processing unit, and each circuit is connected via a bus 410. Also, CPU
Reference numeral 402 denotes a synchronization signal S such as a broadcast station reference signal.
YC is supplied, and a battery 411 is connected to the SRAM 405 so that stored data can be retained even when the operation of the AV server is terminated.

An editing device 70 is connected to the external interface circuit 401. The editing device 70 receives various input signals from the editing device 70 and supplies output signals supplied via a bus 410 to the editing device 70. Perform processing.
The CPU 402 executes a control program stored in the ROM 403 to perform control processing synchronized with the supplied synchronization signal SYC. RAM 404 is a CPU 402
Is used to store data when the control program is executed. The SRAM 405 stores the AV server 1
This is for storing data to be held even after the operation of “0” is completed. For example, edited data generated by the editing device 70 and the like are stored.

In the AV server 10 configured as described above, when recording of, for example, material input data is instructed by an input signal from the editing device 70 or the like, the CPU 402 of the operation management unit 40 uses the input / output processing unit 20. To encode and decode the material input data signal SDin supplied through the external interface circuit 201.
After that, the data is written into one bank of the buffer memory 203. After that, the data written in one bank of the buffer memory 203 is transferred in the allocated processing period, for example, in the time slot allocated to each input / output processing unit of the time slot generated by the time slot generating circuit (not shown). The information is recorded in the disk array unit 30. In the CPU 402, information indicating which position of the disk array unit 30 has been recorded is input / output processing unit 20.
The file management information is generated from the input / output control circuit 205, which indicates what file data is recorded in which position of the disk array unit 30.
It is stored in M405.

The editing device 70 selects necessary data from material data recorded in the disk array unit 30 to generate edited data, and sends the edited data to the operation management unit 40 of the AV server 10. Supply.

When the edit data is supplied, the CPU 402 of the operation management unit 40 converts the record link information for reading the material data indicated by the edit data from the disk array unit 30 into the edit data and the file management information. It is generated on the basis of and stored in the SRAM 405.

Here, the operation management unit 4 from the editing device 70, etc.
When the reading of the edited file is instructed to the CPU 0, the CPU 402 reads the record link information of the specified file from the SRAM 405, generates the operation control signal CTA based on the record link information, and 20. The input / output processing unit 20 generates control signals CTB and CTC based on the operation control signal CTA and supplies the control signals CTB and CTC to each circuit of the input / output processing unit 20 and the disk array unit 30 so that desired data is output from the disk array unit 30. The process of reading and writing the data written in one bank of the buffer memory 203 in the allocated time slot and reading the data written in this one bank and supplying the data to the encoding / decoding circuit 202 is as follows.
The process is sequentially repeated until the data reading of the designated file is completed. Further, the encoding / decoding circuit 2
02, the material output data signal SDout obtained by decoding
Is output via the external interface circuit 201, whereby the material data of the file instructed to be read can be output.

Further, the AV server 10 can continuously read out the material data treated as one file by using the period in which the recording of the material input data and the reading instruction of the recorded file are not performed. Compile processing to re-record data in

Here, the structure of the file management information stored in the SRAM 405 will be described first. This file management information is stored in a so-called linked list.
It is created as a list (record entry) in the format of t). FIG. 2 is a diagram showing file management information in the SRAM 405. The file management information includes a file entry E for managing specific information on a file basis.
F, a record entry ER for managing an actual recording position and the like in the disk array unit 30, a free space entry FS for managing a free area and the like in the disk array unit 30, and the like. The file entry EF and the record entry ER are stored in the SRAM 405.
It can be managed in multiple places.

As shown in FIG. 3A, the file entry EF includes a “file name” indicating a unique name for each file, and a “first record entry of the first record entry” indicating a link to the first record entry for the file name. Link ". Here, the record is a group of data continuously recorded on the medium of the disk array unit 30.

As shown in FIG. 3B, the record entry ER includes “head position data” indicating the actual recording start position of one record in the disk array unit 30 and “record length data” indicating the actual recording size of the data of the record. And "link to next record entry" indicating the next record entry. Here, when the link data of “link of next record entry” is an end value (END), this indicates that this record entry is the last record entry. In the record entry, a "control flag" indicating information as to whether or not the data of the record may be deleted is provided as needed. For example, when the control flag is "ON", Indicates that the data can be deleted, and "OFF" indicates that the data cannot be deleted. Alternatively, the control flag may be set to “MUTE” so that data reproduction is not permitted.

As shown in FIG. 3C, the free space entry FS includes "head position data" indicating the start position of the free space, "size data" indicating the size of the free space, and free space of the next free area. "Next free space link".

Here, the address of the head position data and the size of the recording length data in the record entry and the free space entry can be expressed in units of blocks, for example. As the size of this block, for example, one sector (for example, 512 bytes)
The AID configuration is set to a size (for example, 4 kilobytes) multiplied by the number of hard disk drives (for example, 8) on which data is recorded.

FIG. 4 shows the editing data generated by the editing device 70. The editing data includes the “file name” of the material data to be used, “start position data” indicating the start position of the data used in the material data indicated by the “file name”, and “end position data” indicating the last position. "
It is composed of

Using the editing data configured as described above and the above-described file management information, record link information for reading the material data indicated by the editing data from the disk array unit 30 is generated. As shown in FIG. 5, the record link information includes a file entry ES for reproduction and one or a plurality of reproduction entries ET. The file entry ES for reproduction is shown in FIG.
As shown in FIG. 5, a file name unique to each file, for example, a "file name" of a file newly generated by selecting material data by the editing device 70 and "first" indicating a link to the first reproduction entry corresponding to the file name And a link of the reproduction entry. " As shown in FIG. 5B, the reproduction entry ET includes “head position data” indicating the reproduction start position on the recording medium of the disk array unit 30, “reproduction length data” indicating the amount of continuous data to be reproduced, and It is composed of a “link of the next reproduction entry” indicating the reproduction entry. If the link data of "link of next reproduction entry" is an end value (END), this indicates that this reproduction entry is the last reproduction entry. In this way, the video and / or audio data after editing can be output by sequentially reading the data indicated by the reproduction entry.

The AV server 10 performs a compiling process of re-recording the data so that the material data indicated by the edited data can be read continuously.

Here, the compiling process for one channel will be described with reference to FIGS. FIG.
A indicates material data of one channel recorded on the disk array unit 30, and it is assumed that material data of the file FA is recorded at recording positions WP1 to WP2 and recording positions WP3 to WP4. The material data of the file FB is recorded at the recording positions WP5 to WP6, and the material data of the file FC is recorded at the recording positions WP7 to WP8.
In this case, the file management information is created for each of the files FA, FB, and FC as shown in FIG. 6B.
For example, file entry EFa for file FA
Indicates a file name “FA” and a “link to the first record entry”. First record entry ERa1
Indicates that the data of the file FA has been recorded from the position “WP1” by the length “TLa1”, and “Link to the next record entry” is indicated.
The next record entry ERa2 indicates that the data of the file FA is continuously recorded from the position “WP3” by the length “TLa2”, and the “link to the next record entry” area is “END”. , The data of the file FA is the record entry ERa2
Is indicated at the position based on.

Here, as shown in FIG. 6C, the relative positions RPa1 to RPa1 to R
When the material data at the relative positions RPc1,... From the beginning of the file FB, the file FB, the file FB, the file Pa2, RPa3 to RPa4,... Are selected to be one file, the edited data shown in FIG. And supplied to the AV server 10.

In the operation management unit 40, based on the file management information and the edit data, record link information (hereinafter referred to as "unprocessed link information") as first link information for reading out the data indicated by the edit data. SRC). FIG. 7A shows the disk array unit 3 shown in FIG. 6A.
For material data of one channel recorded in 0,
Data selected by the edit data is indicated by oblique lines. The CP of the operation management unit 40 corresponding to FIG.
In U402, pre-processing connection information SRC is generated. FIG.
B indicates the reproduction entry ET of the pre-processing connection information SRC. The first reproduction entry ET1 indicates the data of the relative positions RPa1 to RPa2 from the beginning of the file FA shown in FIG. 6D. That is, it is shown that the reproduction is performed for the length “TRa1” from the position “WP1a”. Furthermore, the relative position RPa3 to
A reproduction entry ET2 for reproducing the data of RPa4 is shown. The position “WP1a” indicates a relative position RPa1 from the beginning of the file FA, and the length “TRa1”
Is equal to (RPa2-RPa1). Similarly, the reproduction entry ET1 corresponding to the edit data in FIG.
~ ETx is generated.

Further, the CPU 402 of the operation management unit 40 compiles material data indicated by the edited data in response to a request from the editing device 70 or the like. here,
The CPU 402 refers to the pre-processing link information SRC and the information in the free space list, and records link information (hereinafter, referred to as “post-processing link information”) as second link information corresponding to the recording position of the material data after the compile process. Generate DST. For example, the position "WP4
ＷWP5 ”and the position“ WP6〜WP7 ”, the data of the file FA ′ of the data selected from the file FA, the file FB, and the data of the file FC ′ of the data selected from the file FC are successively transmitted. Fig. 7 for playback
The post-processing connection information DST shown in C is generated. For example, by reading data of length "TRt" from the position "WP4a" indicated by the reproduction entry EU1, the files FA ',
FB, FC 'data can be continuously reproduced.
The pre-processing connection information SRC and the generated post-processing connection information D
ST is supplied from the operation management unit 40 to the input / output control circuit 205.

The input / output control circuit 205 performs the re-recording process by selecting the data to be re-recorded based on the supplied pre-processing connection information SRC and post-processing connection information DST and controlling the disk array unit 30. . For example, FIG.
As shown in the figure, the data of the file FA 'or the file FC' is read in the assigned time slot and written in one bank of the buffer memory, and the data written in this bank is read in the assigned time slot. After the processing, re-recording is performed at the position indicated by the connection information DST. Here, since the maximum data amount that can be processed in one re-recording process is determined based on the memory capacity of one buffer memory, for example, the data amount processed in one re-recording process is By approaching the memory capacity, re-recording processing can be performed efficiently. Further, the amount of data that can be processed in one re-recording process may be variable.

When one re-recording operation is completed, the position information to be processed next is supplied from the input / output control circuit 205 to the operation management unit 40 and stored in, for example, the SRAM 405, and then the next re-recording operation is performed. I do. Thereafter, the same processing is performed, and when the re-recording of the data corresponding to the post-processing connection information DST is completed, the compile processing ends.

Further, when the compiling process is interrupted by a request for reading or writing of material data to the AV server 10 after an editing process or a program sending process is performed, the editing process or the program A request for restarting the compile process after completion of the sending process of
When the data is supplied to the V server 10, the compile processing for the data that has not been completed is performed by using the position information to be processed next stored in the SRAM 405.
The process is restarted by U402.

When the compiling process is completed, the post-processing link information DST is stored in the SRAM 405, and when the editing device 70 or the like instructs the operation management unit 40 to read the edited file, the CPU 402 instructs the operation management unit 40 to read the edited file. After compiling the file, link information DST is SR
The connection information DST read from the AM 405
The operation control signal CTA is generated based on the
Supply 0. In the input / output processing unit 20, the operation control signal C
By generating control signals CTB and CTC based on the TA and supplying them to the circuits of the input / output processing unit 20 and the disk array unit 30, desired data re-recorded from the disk array unit 30 so as to be continuous is allocated. The input / output processing unit 2 reads the data sequentially and efficiently within the time slot specified.
From 0, the edited material data can be output.

When compiling data of a plurality of channels in such a compiling process, position information to be processed next is set for each channel, and this position information is used to determine which channel The compile process for a plurality of channels is performed while determining the priority of the re-recording process.

In the following description of the compiling process for a plurality of channels, it is assumed that the compiling process is performed for each frame of video data. Further, it is assumed that, for example, a current frame number indicating a frame position is used as position information of data to be processed next. Further, it is assumed that data for 18 frames can be written to one bank of the buffer memory 203.

FIG. 8 shows data of a plurality of channels to be compiled. FIG. 9 is a flowchart showing a process of compiling data of a plurality of channels. Here, the re-recording information for managing the re-recording operation of the data of a plurality of channels shown in FIG. 8 is configured using the re-recording start frame number and the re-recording frame number. For example,
The re-recording information for channel 0 shown in FIG.
As shown in A, for the material data D00, the re-recording start frame number is "0" and the re-recording frame number is "1".
8 ". For the data D01, the re-recording start frame number is "18" and the re-recording frame number is "24".
Becomes Similarly, in the re-recording information for channel 1 shown in FIG. 8B, as shown in FIG. 10B, the re-recording start frame number is "0" and the number of re-recording frames is "24" for the material data D10. The data D11 is data that is determined not to be subjected to the re-recording process similarly to the data of the file FB described above. For the next data D12, the re-recording start frame number is "33" and the re-recording frame is If the number is "1
2 ". Further, re-recording information is generated for the channel 2 shown in FIG. 8C as shown in FIG. 10C. Channel 3 and channel 4 are assumed to have no data recorded or have continuous data and therefore do not need to be re-recorded. As shown in FIG. 10D, the re-recording start frame number is set to “−1”. Set. When the re-recording information is generated by the input / output control circuit 205 in this manner, a compile process is performed using the re-recording information.

First, in step ST1 of FIG. 9, a channel K for which the current frame number indicating a position to be processed next is "0" or a positive value and which is the smallest is searched for a channel to be subjected to re-recording processing. Set. Here, FIG.
When the compiling process is started for the data of a plurality of channels shown in FIG. 11, since the re-recording start frame number is equal to the current frame number as shown in FIG. 11, the channels 0 and 1 whose current frame numbers are "0" Is retrieved, and for example, channel 0 is set as a channel on which re-recording processing is performed first, and the process proceeds to step ST2.

In step ST2, it is determined whether or not the re-recording process for all channels has been completed. Here, if the re-recording process for all the channels has not been completed, step ST3
Proceed to.

In step ST3, data of one buffer in the memory is read out from the channel K selected in step ST1, and re-recorded at the position indicated by the connection information DST after processing, and the process proceeds to step ST4. For example, when channel 0 is first set in step ST1,
After reading the data of channel 0 for 18 frames from the re-recording start frame number “0” and re-recording, step S
Proceed to T4.

In step ST4, the current frame number of the channel K for which the re-recording process has been performed in step ST3 is updated, and the process returns to step ST1. That is, when the data of channel 0 is read out and re-recorded for 18 frames from the re-recording start frame number “0” in step ST3, the current frame number of channel 0 is updated from “0” to “18” in step ST4. It returns to step ST1.

As described above, when the processing from step ST1 to step ST4 is repeated once, data D00 of channel 1 is re-recorded for 18 frames from the re-recording start frame number "0".

Next, from step ST1 to step ST4
Is performed for the second time, since the current frame number of channel 0 has been updated to "18" as shown in FIG. 12 by the first re-recording process, Once set, data D10 of channel 1 is re-recorded for 18 frames from the re-recording start frame number “0”. In the third time, since the current frame number of channel 1 has been updated to "18", the data D20 of channel 2 has the re-recording start frame number "1".
2 to 18 frames are re-recorded. Hereinafter, except for the data that does not need to be re-recorded, re-recording is sequentially performed on the data of the channel having the smaller current frame number, and the re-recording process of each channel is performed in the order shown in FIG.

Thereafter, when it is determined in step ST2 that the re-recording process for all the channel data has been completed, the compile process ends.

As described above, by performing the re-recording process while selecting the data of the channel having the smaller current frame number, the re-recording process of each channel is performed in parallel, and the progress of the process in each channel is performed. The variation can be reduced.

During the compiling process, the current frame number of "0" or the smallest positive value is stored as progress information indicating the progress of the process. Here, when the compile process that has been interrupted without being completed is executed again, that is, the compile process that is interrupted because the power of the AV server is turned off or a process that is executed with higher priority has occurred Is performed again, if the channel having the stored current frame number is determined and the re-recording process is performed on the determined channel from the position of the current frame number, the channel is restarted from the beginning. Even if the recording process is not performed, the process can be performed immediately after the portion where the re-recording process has been completed. For example,
If the process is interrupted while the re-recording process of the data D01 of the channel 0 is being performed after the re-recording process of the data D21-a of the channel 2 is completed, the current frame number of each channel is as shown in FIG. Becomes In this case, since the current frame number “18” is stored, when the processing is restarted, the processing order in which the re-recording frame start number is “18” is detected in the re-recording processing order shown in FIG. By performing the process shown in the flowchart of FIG. 9 from this position, the re-recording process can be restarted from the interrupted re-recording process, and the compile process can be performed efficiently.

Further, "0" during the compiling process
Alternatively, since the minimum current frame number with a positive value indicates the position where the re-recording process is completed in all the channels, if the current frame number with the minimum value, that is, the progress information is to be output, The progress of the compiling process can be easily determined.

Further, for example, with respect to data of each channel for which a compile process is performed, re-recording control information indicating a data read position and a data re-record position for each data unit that can be processed at one time is generated and stored in a memory. In comparison with the case where the compiling process is performed on the basis of the re-recording control information stored in the memory, the present invention sets the current frame number at which the portion where the compiling process has been completed can be determined. This is stored as a pointer indicating the position. For this reason, information for managing the progress of the process and resuming the interrupted re-recording process can be reduced, and the amount of memory for storing information for managing the compiling process can be reduced.

In the above embodiment, the progress of the compile process is controlled and managed using the current frame number. However, information indicating the elapsed time or the like is used as the progress information instead of the current frame number. It is the same even when used.

[0058]

According to the present invention, based on management information for managing recording positions of a plurality of time-sequential data groups recorded on a randomly accessible recording medium and editing information indicating data used as one file. Thus, first link information for reading out the data indicated by the edit information and second link information for making the recording position of the data indicated by the edit information continuous are created, and the first and second link information are created. Data for changing the recording position is determined based on the information. Here, a re-recording process of reading data from a position on the recording medium based on the first connection information and recording the read data at a position on the recording medium based on the second connection information is performed on the determined data. Will be In the re-recording process, progress information indicating the progress position of the process is created, and data to be re-recorded next is selected. As a result, the progress status of the compile process can be easily grasped by using the progress information, and the interrupted process can be resumed only by using the progress information. Compile processing can be performed well.

Further, since the progress information generated at the time of re-recording is output, the progress of the processing can be easily grasped.

Further, in re-recording of data for a plurality of channels used in parallel, data whose recording position is to be changed for each channel is determined based on the first connection information and the second connection information for a plurality of channels. At the same time, data to be re-recorded next is selected based on the progress information for each channel so that the variation in the progress of the re-recording process among a plurality of channels is reduced. Therefore, the processing of each channel is performed in parallel, and by using this progress information, the progress of the entire processing can be easily grasped. Further, since the interrupted processing can be resumed using the progress information, the information required to restart the interrupted processing even in the case of a plurality of channels can be reduced, and thus the capacity of the memory for storing the information is reduced. Need not be increased.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an AV server according to the present invention.

FIG. 2 is a diagram showing a configuration of file management information.

FIG. 3 is a diagram showing a configuration of each entry of file management information.

FIG. 4 is a diagram showing editing data.

FIG. 5 is a diagram showing record link information.

FIG. 6 is a first diagram illustrating a compile processing operation;

FIG. 7 is a second diagram illustrating the compile processing operation.

FIG. 8 is a diagram showing compile processing data of a plurality of channels.

FIG. 9 is a flowchart showing a compile processing operation of a plurality of channels.

FIG. 10 is a diagram showing re-recorded information.

FIG. 11 is a diagram showing a current frame number at the start of a re-recording process.

FIG. 12 is a diagram showing a current frame number after a first re-recording process.

FIG. 13 is a diagram showing a re-recording processing order.

FIG. 14 is a diagram showing a current frame number when processing is interrupted.

FIG. 15 is a diagram showing a conventional compile processing operation.

[Explanation of symbols]

10 AV server, 20 input / output processing unit, 30
... Disk array unit, 40 ... Operation management unit, 70
··· Editing device 201 · External interface circuit 202 · Encode / decode circuit 203 ·
..Buffer memory, 205... Input / output control circuit, 4
01 ... external interface circuit, 402 ... CP
U, 403: ROM, 404: RAM, 405
... SRAM, 406 ... Interface, 410
... Bus, 411 ... Battery

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/91 H04N 5/91 N 5/92 5/92 H (72) Inventor Takahiro Araki Shinagawa-ku, Tokyo 6-7-35 Kitashinagawa Sony Corporation (72) Inventor Hiroshi Shimizu 6-35 Kita Shinagawa, Shinagawa-ku, Tokyo Sonny Corporation F-term (reference) 5B065 CA11 CC04 CE21 ZA16 5B082 CA11 5C053 FA14 FA23 GB21 JA01 JA24 JA30 KA03 KA04 KA05 KA24 KA26 5D044 AB05 AB07 BC01 CC04 DE02 DE17 DE24 DE37 DE48 GK12 HL14 5D110 CA05 CA06 CA08 CB04 CC02 CD06 CD10 CD15 CJ01

Claims (12)

[Claims] 1. An input / output processing means for recording a plurality of time-ordered data groups inputted on a randomly accessible recording medium or reading out the plurality of time-ordered data groups to be output from the recording medium, and the recording medium Management means for creating and holding management information for managing the recording positions of the plurality of time-sequential data groups recorded in the management means, wherein the management means First connection information for reading out the data indicated by the edit information, based on the edit information indicating data to be used as one file from the plurality of chronological data groups recorded on the recording medium. The second linking information that makes the recording position of the data indicated by the editing information continuous is created and supplied to the input / output processing means. The data for changing the recording position is determined based on the connection information and the second connection information, and the data is read from the position of the recording medium based on the first connection information, and is indicated by the second connection information. The re-recording process of recording at the position of the recording medium is repeatedly performed until the re-recording of the determined data is completed.
At the time of the re-recording process, a data recording / reproducing apparatus is characterized in that progress information indicating a progress position of the process is created and data to be re-recorded is selected next. 2. The data recording / reproducing apparatus according to claim 1, wherein the input / output processing unit outputs the progress information generated at the time of the re-recording. 3. The management means supplies the first and second connection information of data for a plurality of channels used in parallel to the input / output processing means. Based on the first and second connection information of the data for the channels, the data for which the recording position is changed for each channel is determined, and the data is re-recorded for each channel, and based on the progress information for each channel. 2. The data recording / reproducing apparatus according to claim 1, wherein data to be re-recorded next is selected so that a variation in progress of the re-recording process among the plurality of channels is reduced. 4. A process in which a plurality of time-ordered data groups that are input are recorded in a processing period allocated to a randomly accessible recording medium, or the plurality of time-ordered data groups to be output are allocated from the recording medium. Input / output processing means for reading in a period, and management means for creating and holding management information for managing recording positions of a plurality of time-sequential data groups recorded on the recording medium, wherein the management means , Based on the held management information and the editing information indicating data to be used as one file from the plurality of time-sequential data groups recorded on the supplied recording medium. First link information for reading out the data that has been read and second link information that makes the recording position of the data indicated by the editing information continuous are created and provided to the input / output processing means. The input / output processing unit determines data for changing a recording position based on the first connection information and the second connection information, and determines a position of the recording medium based on the first connection information. A re-recording process of reading data from and recording the data at the position of the recording medium indicated by the second link information is repeatedly performed until re-recording of the determined data is completed.
In the re-recording process, the data recording / reproducing apparatus generates progress information indicating a progress position of the process and selects data to be re-recorded next. 5. The data recording / reproducing apparatus according to claim 4, wherein the input / output control means outputs the progress information generated at the time of the re-recording. 6. The management means supplies the first and second connection information of data for a plurality of channels used in parallel to the input / output processing means. Based on the first and second connection information of the data for the channels, the data for which the recording position is changed for each channel is determined, and the data is re-recorded for each channel, and based on the progress information for each channel. 5. The data recording / reproducing apparatus according to claim 4, wherein data to be re-recorded next is selected so that a variation in progress of the re-recording process among the plurality of channels is reduced. 7. A method for creating management information for managing a recording position when recording a plurality of time-sequential data groups on a randomly accessible recording medium, and using data as one file from the plurality of time-sequential data groups Based on the editing information and the management information,
Creating first link information for reading out the data indicated by the edit information and second link information for continuing the recording position of the data indicated by the edit information; Data for changing the recording position is determined based on the second connection information, data is read from a position on the recording medium based on the first connection information, and the read data is recorded based on the second connection information. The re-recording process for recording at the position of the medium is repeatedly performed until the re-recording of the determined data is completed, and at the time of the re-recording process, progress information indicating the progress position of the process is created, and then re-recorded. A recording data processing method comprising selecting data to be recorded. 8. The recording data processing method according to claim 7, wherein the progress information generated at the time of the re-recording is output. 9. The plurality of time-sequential data groups are data for a plurality of channels used in parallel, and for each of the channels based on the first connection information and the second connection information for the plurality of channels. The data for which the recording position is to be changed is determined, and the data is re-recorded for each channel. Then, based on the progress information for each channel, the data is re-recorded to reduce the variation in the progress of the re-recording process among the plurality of channels. 8. The recording data processing method according to claim 7, wherein data to be recorded is selected. 10. A method for creating management information for managing a recording position when recording a plurality of time-sequential data groups on a randomly accessible recording medium, and using the plurality of time-sequential data groups as one file Based on the editing information and the management information,
Creating first link information for reading out the data indicated by the edit information and second link information for continuing the recording position of the data indicated by the edit information; The data for which the recording position is to be changed is determined based on the second connection information, the data is read out from the position based on the first connection information on the recording medium in the allocated processing period, and the read data is stored in the second connection information. The re-recording process of recording in the processing period assigned to the position of the recording medium based on the link information is repeatedly performed until the re-recording of the determined data is completed, and at the time of the re-recording process, A recording data processing method comprising: creating progress information indicating a progress position; and selecting data to be re-recorded next. 11. The recording data processing method according to claim 10, wherein the progress information generated at the time of the re-recording is output. 12. The plurality of time-sequential data groups are data for a plurality of channels used in parallel, and for each of the channels based on the first connection information and the second connection information for the plurality of channels. The data for which the recording position is to be changed is determined, and the data is re-recorded for each channel. Then, based on the progress information for each channel, the data is re-recorded to reduce the variation in the progress of the re-recording process among the plurality of channels. The recording data processing method according to claim 10, wherein data to be recorded is selected.