JPH09168130A - Voice and video data record and reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To scatter the load that is essential to the recording and reproduction of the voice/video data to plural component parts and to perform the continuous reproduction of the voice/video data. SOLUTION: The (n) pieces of input/output controllers 38i of a voice/video data recorder/reproducer are connected to a data management device 34 via a main CPU bus 32 and also connected to a recorder/reproducer 24 via a data bus 30. The device 34 manages the recording area of the recorder/reproducer 24 and furthermore collectively records the voice/video data that are too short to be continuously reproduced in a prescribed recording area of the recorder/ reproducer 24 so as to secure the prescribed length or more for the voice/video data. The controllers 38i record the voice/video data inputted from every connected voice/video equipment to the recorder/reproducer 24 and then reproduce and supply the voice/video data from the recorder/reproducer 24 in response to the request of every voice/video equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention records audio / video data supplied from external devices such as a plurality of editing devices,
The present invention relates to an audio / video data recording / reproducing apparatus for reproducing the recorded audio / video data in response to a request from an external device.

[0002]

2. Description of the Related Art In recent years, a large number of large-capacity hard disk devices have been connected and have a total recording capacity of tens to hundreds of gigabytes (GB).
A hard disk array device capable of random access has been put into practical use. This hard disk array device is suitable for recording audio data and / or video data, or any of these data (audio / video data) having a very large data amount, and particularly for recording any audio / video data with a short access time. It is excellent as a recording / playback device for editing devices because it can be played back in.

However, if the edited audio / video data is recorded again on the hard disk array in which the audio / video data (material data) which is the object of editing is recorded again, the audio / video data of the same contents are duplicated. As a result, the recording capacity of the hard disk array is wasted, and it may be impossible to edit audio / video data for a long time.

Further, a conventional technique will be described. Figure 31
Is a configuration example of a conventional audio / video data recording / reproducing apparatus 8.
FIG. Conventional audio / video data recording / playback device
For example, as shown in FIG. 31, the device 8 is a hard disk drive.
Ray device or magneto-optical disk (MO; Magnetic Opt)
ical disc) A recording medium such as a device that can be randomly accessed.
Recording / playback of audio / video data for body (not shown)
Using the recording / reproducing device 24 and the RAM 204, the RO
Execute the control program stored in M202
Microprocessor (CPU), control signal interface
Base circuit (control data IF) 210₁~ 210_n(Figure
31 in the case of n = 3), and the video and audio signals, respectively.
No. interface circuit (audio / video data IF) 22
0₁~ 220_nAnd buffer memory 222 ₁~ 222
_nI / O control circuit 224 composed of₁~ 224
_nAre connected to each other via a CPU bus 218,
Is done.

In the audio / video data recording / reproducing apparatus 8, the microprocessor 200 includes a recording / reproducing apparatus 24.
The recording area (occupied recording area) and the empty recording area occupied by each of the audio / video data (audio data and / or video data) recorded on the recording medium are managed. Occupied recording area data and empty recording area data respectively indicating the occupied recording area and the empty recording area (these are collectively referred to as simply the recording area data)
Is stored in the RAM 204 and is further recorded in a predetermined recording area of the recording medium of the recording / reproducing device 24.

During recording, the microprocessor 200 receives an input from each of a plurality of audio / video equipment such as an editing device, a video tape recorder (VTR device) or a transmission device via control data IF 210 _{1 to} 210 _n. Audio / video data which controls the recording / reproducing device 24 and the input / output control circuits 224 _{1 to} 224 _n based on the output control signal and is input from the audio / video device via the input / output control circuits 224 _{1 to} 224 _n. Is recorded in the recording / reproducing device 24.

[0007] Further, the microprocessor 200 receives the control data IF2 from each of the audio / video equipment at the time of reproduction.
The recording / reproducing device 24 and the input / output control circuit 22 based on the input / output control signal input via 10 _{1 to} 210 _n.
4 _{1 to} 224 _n are controlled, the audio / video data required by the audio / video equipment is reproduced from the recording / reproducing device 24, and is supplied to the audio / video equipment via the input / output control circuits 224 _{1 to} 224 _n .

However, in the audio / video data recording / reproducing apparatus 8 shown in FIG. 31, the recording / reproducing apparatus 2 is used.
4, audio / video data to be recorded / reproduced, control signals input from audio / video equipment via control data IFs 210 _{1 to} 210 _n , occupied recording area data and empty recording area data, Same CPU bus 218
A bus neck occurs in the CPU bus 218 since the data is transmitted and received between the respective constituent parts via the.

Further, the microprocessor 200 is
・ Video equipment and input / output control circuit 224 ₁~ 224_nBetween
Transmission protocol control, processing related to recording area data,
And control data IF 210₁~ 210_nEntered in
Since it is necessary to perform all processing of input / output control signals,
Control data IF210₁~ 210_nAnd I / O control times
Road 224₁~ 224_nCan not increase the number of
Yes. Also, the recording area data and audio / video data are the same.
Since it is recorded on one recording / reproducing device 24, recording / reproducing
The load on the device 24 itself also increases.

The audio / video data recording / reproducing apparatus according to the present invention has been made in view of the above-mentioned problems of the prior art, and includes a hard disk and a magneto-optical disk (MO).
A plurality of audio / video data to be edited are recorded on a randomly accessible recording medium such as a disc (Magnetic-Optical Disc), and any audio / video data is reproduced in response to a request from an external device such as an editing device. It is an object of the present invention to provide an audio / video data recording / reproducing device to be provided.

It is another object of the present invention to provide an audio / video data recording / reproducing apparatus suitable for editing audio / video data for a long time. Further, the present invention, without duplicating recording audio and video data of the same content in the recording medium,
An object of the present invention is to provide an audio / video data recording / reproducing apparatus capable of reproducing audio / video data having exactly the same content as audio / video data of an editing result (editing result data).

Further, the present invention manages a recording area (occupied recording area) occupied by audio / video data in a recording medium and an empty recording area, processing relating to an input / output control signal input from an external audio / video device, In addition, the processing load that is essential for audio / video data recording / playback devices, such as protocol control related to input / output of audio / video data to / from audio / video equipment, is distributed to separate components. It is an object to provide an audio / video data recording / reproducing device.

Further, according to the present invention, it is possible to prevent the processing load from concentrating on a specific component part and to input / output audio / video data at a high speed to / from more external audio / video equipment. -The purpose is to provide a video data recording / reproducing device. It is another object of the present invention to provide an audio / video data recording / reproducing device in which a bus for transmitting / receiving audio / video data and a bus for transmitting / receiving other control data are separated from each other, and a bus neck is less likely to occur. .

[0014]

In order to achieve the above object, an audio / video data recording / reproducing apparatus according to the present invention comprises:
Audio / video data recording / playback having a data recording / playback apparatus and a recording / playback control apparatus for controlling the data recording / playback means to record audio / video data and playing back the recorded audio / video data The data recording / reproducing device is a device for recording / reproducing audio / video data to / from a specified recording area of a randomly accessible recording medium, and recorded audio / video data. Is reproduced in combination with a first occupied recording area occupied by the recording medium and a first recording area management means for managing an empty recording area of the recording medium, and a request of the recording / reproduction control device. Second recording area management for managing a second occupied recording area occupied by the recording medium by a part or all of the recorded audio / video data as partial data And a recording medium management unit, which is bus-connected to the recording region management unit via a first bus, and connects the first occupied recording region, the second occupied recording region, and the empty recording region via the first bus. A plurality of input / output control means for receiving and inputting audio / video data via the second bus, the plurality of input / output control means being respectively connected to the recording / reproducing means via a second bus. Each of the input / output control means, based on the empty recording area received from the first recording area management means, sets the first occupied recording area of the audio / video data requested to be recorded by the recording / reproduction control device. The recording / reproducing means specifies and records the recording / reproducing means, and the first / second occupying recording area of the audio / video data requested to be reproduced by the recording / reproducing control device. As a means of reproduction Constant and has a regeneration control means for regenerating.

Preferably, the first recording area management means generates a first occupied recording area list in a linked list format in which the first occupied recording areas of the recorded audio / video data are associated with each other. 1 dedicated recording area list generating means and voice corresponding to the first dedicated recording area list
A first identification flag adding means for adding an identification flag having a first value to the first occupied recording area list when the video data can be deleted is associated with the empty recording area of the recording / reproducing means. An empty recording area list generating means for generating an empty recording area list in the linked list format, and the second recording area managing means associates the second occupied recording area of the partial data to be reproduced in combination with each other. First occupied recording area list generating means for generating a second occupied recording area list in linked list format, and first when audio / video data corresponding to the second occupied recording area list can be deleted. Second identification flag adding means for adding an identification flag having a value of 1 to the second occupied recording area list.

[0016] Preferably, when a request for releasing the first occupied recording area and the second occupied recording area is received,
Only when the value of the identification flag is the first value,
The recording area releasing means for releasing the corresponding recording area of the recording medium and deleting the first occupied recording area and the second occupied recording area list is associated with the empty recording area of the recording / reproducing means. It further has an empty recording area list generating means for generating an empty recording area list in the linked list format.

Preferably, when the partial data has a predetermined data length or less, short partial data having a predetermined data length or less and a predetermined part of the partial data reproduced before and after the short partial data. Based on the first occupancy recording area, the partial data recording means for continuously recording the data in the predetermined recording area of the recording medium, and the partial data in the predetermined recording area of the recording medium. The recording medium further comprises a third recording area managing means for managing a third occupied recording area indicating a recording area occupied by the predetermined portion and the short portion data of the recorded unit data in the recording medium, and the reproduction is performed. The control means sets the first occupied recording area, the second occupied recording area and the third occupied recording area of the audio / video data requested to be reproduced by the recording / reproducing control device. Specified in the recording and playback means to reproduce.

The audio / video data recording / reproducing apparatus according to the present invention is, for example, a hard disk array device in which large capacity hard disk devices are connected in an array, or a magneto-optical disk (MO disk; Magnetic Optical Disc).
) A data recording / reproducing apparatus including a device, which is suitable for recording audio / video data (audio data and / or video data or one of these) on a randomly accessible recording medium (hard disk or MO disk),
A recording / playback control device, such as an audio / video data editing device, a transmission device, or a video tape recorder, which controls the data recording / playback means to record audio / video data and plays back the recorded audio / video data. In response to the request of the recording / playback control device, the data recording / playback device records the audio / video data supplied from the recording / playback control device on the recording medium, and plays back the recorded audio / video data. Supply to the recording / playback control device.

In the above data recording / reproducing apparatus, the recording / reproducing means records the audio / video data in a recording area of a recording medium such as a hard disk designated by another component of the data recording / reproducing apparatus. And play.

In the recording area management means, the first recording area management means manages the first occupied recording area occupied by the audio / video data recorded on the recording medium and the empty recording area of the recording medium. For example, the above first
The first occupied recording area list and the empty recording area list in the form of a linked list are generated and managed.

The second recording area managing means, for example, when the recording / playback control means is an editing device, the editing device edits the audio / video data supplied from the data recording / playback device, and performs the editing process. The same audio / video data as the audio / video data (edit result data) obtained as a result of
The linked list is used to create a second occupied recording area occupied by each partial data in the recording medium, which is necessary for reproducing a part or all (partial data) of each audio / video data recorded in the recording medium. A second dedicated recording area list in the form is generated and managed.

The plurality of input / output control means are bus-connected to the recording area management means and the second recording area management means via the first bus, and the first occupied recording area and the first occupied recording area via the first bus. 2 occupying recording areas and empty recording areas, respectively connected to recording / reproducing means via a second bus, and inputs / outputs audio / video data via the second bus;
The data related to the recording area and the audio / video data are prevented from colliding on the same bus.

In each of the plurality of input / output control means,
The recording control means receives the audio / video data from the first recording area management means via the first bus when the recording / reproduction control apparatus supplies the audio / video data to the data recording / reproduction apparatus and requests the recording. A recording area for recording the audio / video data requested to be recorded is calculated from the empty recording area, and the calculated recording area is recorded / reproduced (hard disk array, etc.).
Specify and record.

The reproduction control means, when the recording / reproduction control device specifies to the data recording / reproducing device the already recorded audio / video data and requests the reproduction thereof, for example, the audio / video which is requested to be reproduced. If the video data is material data to be the material of the editing process, the first occupied recording area of the audio / video data requested to be reproduced is designated as the recording / reproducing means,
Further, for example, when the audio / video data requested to be reproduced is the edit result data, the second occupied recording area of the partial data used for reproducing the same audio / video data as the edit result data is set. Specify the recording / playback method and play it back.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a diagram showing a configuration of an audio / video data processing system 1 according to the present invention. As shown in FIG. 1, the audio and video data processing system 1 according to the present invention, the editing apparatus, audio and video equipment, such as a transmission device or video tape recorder 4 ₁ to 4 _n
And an audio / video data recording / reproducing device 2.

FIG. 2 is a diagram showing the structure of the audio / video data recording / reproducing apparatus 2 shown in FIG. As shown in FIG. 2, the audio / video data processing system 1 includes a control device 20 and an input / output device 22 in which buses are connected by a bus bridge circuit 206, and a recording / reproducing device 24.

The controller 20 is a microprocessor 20.
0, ROM 202, RAM 204, and n pieces of control data IF 210 _{1 to} 210 _n (FIG. 2 illustrates the case where n = 3) are connected to each other via a CPU bus 218. The input / output device 22 includes n input / output control circuits 2
Consists 24 ₁ to 224 _n, the input-output control circuit 224
Each of _{1 to} 224 _n is the audio / video data IF 220.
_{1 to} 220 _n and buffer memories 222 _{1 to} 222 _n
Consists of

In the audio / video data processing system 1, each of the audio / video devices 4 ₁ to 4 _n
An input / output control signal including data indicating audio / video data requested to be reproduced is output to the audio / video data recording / reproducing device 2, the requested audio / video data is reproduced, and reproduced audio / video data To receive. At the time of recording, each of the audio / video devices 4 ₁ to 4 _n outputs an input / output control signal requesting recording to the control data IF 210 _{1 to} 210 _n of the audio / video data recording / reproducing device 2 to request recording. Input / output control circuit 224 _1-
It is supplied to 224 _n and recorded in the recording / reproducing device 24.

The audio and video data recording and reproducing apparatus 2, audio and video data to audio and video equipment 4 ₁ ~4 _n (A
Supplying V), records the audio and video data obtained as a result of editing by the audio and video equipment 4 ₁ to 4 _n. In the control device 20 of the audio / video data recording / reproducing device 2, the microprocessor 200 is composed of, for example, a general-purpose or RISC (Reduced Instruction Set Computer) -structured microprocessor and its peripheral circuits. Execute a stored program.

The microprocessor 200 stores recorded audio / video data in the recording medium (M
Occupied recording area data indicating an occupied recording area by managing a recording area (occupied recording area) occupied in an O disk or a hard disk;
Also, the free recording area data indicating the free recording area is RA
The data is recorded in the M204, and further, these data are recorded in a predetermined recording area of the recording / reproducing device 24 via the bus bridge circuit 206 and the sub bus 226. Further, the microprocessor 200 operates via the CPU bus 218, the bus bridge circuit 206, and the sub-bus 226 such as protocol control of the input / output control circuits 224 _{1 to} 224 _n of the input / output device 22, and the recording / reproducing device 24. Specifies the recording area for audio / video data for the.

Control data IF 210₁~ 210_nEach
This is the connected audio / video equipment 4 ₁~ 4_nEntered from
The input / output control signal that is received via the CPU bus 218
And outputs it to the microprocessor 200. bus
The bridge circuit 206 includes the CPU bus 21 of the control device 20.
8 and the sub-bus 226 of the I / O device 22
Adjust the input / output timing.

In the input / output device 22, each of the input / output control circuits 224 _{1 to} 224 _n operates under the control of the microprocessor 200 of the control device 20, and at the time of recording,
Predetermined protocol (eg SCSI; Small Computer S
according to ystem Interface), audio and video equipment 4 ₁ to 4
_The audio / video data input from _{n is transferred} to the sub bus 226.
It is output to the recording / reproducing device 24 via the recording medium and recorded in a designated recording area of the recording medium of the recording / reproducing device 24. Further, each of the input / output control circuits 224 _{1 to} 224 _n reproduces audio / video data from a designated recording area of the recording medium of the recording / reproducing device 24 during reproduction, and the sub-bus 226.
And supplies the audio and video equipment 4 ₁ to 4 _n in accordance with a predetermined protocol the audio and video data input through the.

In the input / output control circuits 224 _{1 to} 224 _n , each of the audio / video data IF 220 _{1 to} 220 _n is reproduced by the recording / reproducing device 24 during reproduction.
Sub-bus 226 and the buffer memory 222 _1-222
The audio and video data input via the _n outputs to the audio and video equipment 4 ₁ to 4 _n. The audio and video data IF220 ₁ ~220 _n is the time of recording, recording and reproducing audio and video data input from the audio and video equipment 4 ₁ to 4 _n via the buffer memory 222 ₁ to 222 _n and the sub-bus 226 Output to the device 24 for recording.

[0034] The buffer memory 222 ₁ to 222 _n, respectively, at the time of reproduction, audio and video data to audio and video data is buffered to be input from the sub-bus 226 I
Print to F220 ₁ to 220 _n, the time of recording, the sub-bus 226 the audio and video data input from the audio and video data IF220 ₁ ~220 _n buffered
It is output to the recording / reproducing device 24 via.

The recording / reproducing device 24 is a hard disk array device or a magneto-optical disk (MO; Magnetic Opt).
ical disc) device or the like, which is a microprocessor 20
The input / output control circuits 224 ₁ to 224 ₁ to the recording medium (not shown) that operates according to the control of 0 and is capable of random access.
Audio input from 224 _n via sub-bus 226
The video data is recorded in the recording area designated by the microprocessor 200. In addition, the recording / reproducing device 24
Outputs the audio / video data reproduced from the recording area designated by the microprocessor 200 of the recording medium to each of the input / output control circuits 224 _{1 to} 224 _n via the sub bus 226.

Hereinafter, the audio / video data recording / reproducing apparatus 2 will be described.
The operation of the audio / video data processing system 1
Explain the work. Below, audio and video equipment 4₁Is audio / video
Recording of audio / video data to the data recording / playback device 2
An example of requesting recording / playback will be explained.
Equipment 4 _Two~ 4_nTo the audio / video data recording / playback device 2
When requesting recording / playback of audio / video data
The operation is the same.

First, the operation of the audio / video data processing system 1 during recording will be described. Audio and video equipment 4 _1, input and output control signals including predetermined data name (file name) and data length and the like of the audio and video data for requesting reproduction,
Output to the control data IF 210 ₁ of the control device 20 of the connected audio / video data recording / reproducing device 2.

The control data IF 210 ₁ receives the input / output control signal from the audio / video device 4 ₁ by the microprocessor 20.
Output for 0. The microprocessor 200 records the input audio / video data based on the empty recording area data based on the file name and the data length included in the input / output control signals input from the control data IFs 210 _{1 to} 210 _n. Recording / reproducing device 24
To be specified.

Further, the microprocessor 200 controls the input / output control circuit 224 ₁ to accept the audio / video data input by a predetermined protocol, and stores it in the designated recording area of the recording medium of the recording / reproducing apparatus 24. Record.
Further, the microprocessor 200 is the audio / video device 4
_A file entry used for searching audio / video data and occupied recording area data of the recorded audio / video data are generated using the file name or the like input from ₁ , and the empty recording area data is updated.

Next, the operation of the audio / video data processing system 1 during reproduction will be described. The audio / video device 4 ₁ outputs an input / output control signal including a file name of audio / video data requested to be reproduced to the control data IF 210 ₁ . The control data IF 210 ₁ outputs this input / output control signal to the microprocessor 200.

The microprocessor 200 searches for a file entry generated at the time of recording based on the file name of the input / output control signal, and based on the occupied recording area data corresponding to the file entry obtained as a result of the search, A recording area in which the audio / video data requested to be reproduced is recorded is specified in the recording / reproducing apparatus 24, and the recording / reproducing apparatus 24 is controlled to reproduce the audio / video data from the specified recording area. Further, the microprocessor 20
0 controls the input / output control circuit 224 ₁ to reproduce the audio / video data reproduced by a predetermined protocol from the audio / video device 4 ₁
Output.

Second Embodiment Hereinafter, a second embodiment of the present invention will be described. The audio / video data recording / reproducing apparatus 2 (see FIG. 1) shown in the first embodiment.
2), since the CPU bus 218 and the sub bus 226 are separated, the data relating to the recording area data generation and the audio / video data do not exist on the same bus, and the bus neck on the CPU bus 218. Does not occur.
However, audio / video data and audio / video equipment 4
Data relating to protocol control between ₁ to 4 _n and control data IFs 210 _{1 to} 210 _n may coexist on the sub bus 226, and a bus neck may occur in the sub bus 226.

Also, the audio / video data recording / reproducing apparatus 2
All processing load of each component of the microprocessor 2
00, the audio / video data recording / reproducing apparatus 8 (FIG. 31) shown in the related art, as well as the audio / video data recording / reproducing apparatus 2 (FIGS. 1 and 2), has control data. The numbers of the IFs 210 _{1 to} 210 _n and the input / output control circuits 224 _{1 to} 224 _n cannot be significantly increased.

The audio / video data recording / reproducing apparatus 3 explained in the second embodiment is the same as the audio / video data recording / reproducing apparatus 3 shown in the first embodiment.
This is a further improvement of the video data recording / reproducing apparatus 2 and is configured so that audio / video data and other data such as data relating to protocol control are hardly mixed on the same bus. . Further, the audio / video data recording / reproducing apparatus 3 does not concentrate the load related to the processing such as protocol control and recording area management on a specific microprocessor (data processing means), and determines the number of connectable audio / video devices. It is configured so that it can be greatly increased.

FIG. 3 is a view showing the arrangement of the audio / video data recording / reproducing apparatus 3 according to the present invention in the second embodiment. However, FIG. 3 exemplifies the audio / video data recording / reproducing apparatus 3 when n = 4. Further, in each of FIGS. 3 and below, the same components as those shown in FIGS. 1 and 2 are designated by the same reference numerals.

The audio / video data recording / reproducing device 3 is a device used in the audio / video data processing system 1 in place of the audio / video data recording / reproducing device 2 (FIGS. 1 and 2). I / O control devices 38 _{1 to} 3
8 _n is bus-connected to the data management device 34 having the management data recording device 36 via the main CPU bus 32,
The recording / reproducing device 24 is also bus-connected via the data bus 30.

The audio and video data recording and reproducing apparatus 3, these components, in accordance with output control signal inputted from the audio and video equipment 4 ₁ to 4 _n, respectively, sound recording media recording and reproducing apparatus 24・ Record the audio / video data input from each of the video equipment 4 ₁ to 4 _n , and
The audio / video data recorded according to the request from each of the video equipment 4 ₁ to 4 _n is reproduced, and the audio / video equipment 4 ₁ to 4 _n is reproduced.
_n supply to each.

FIG. 4 shows the data management device 34 shown in FIG.
FIG. 3 is a diagram showing the configuration of FIG. As shown in FIG. 4, the data management device 34 includes a microprocessor (CPU) 340, R
The OM 342, the RAM 344, and the SCSI interface (SCSIIF) 348 are connected to the main CPU bus 32.
Connected to the bus via the SCSIIF348
A management data recording device 36 such as a hard disk device is connected to the computer.

In the data management device 34, the microprocessor 340, the ROM 342 and the RAM 344 are
It operates as a computer that executes the program stored in the ROM 342, manages the recording area of the recording medium of the recording / reproducing apparatus 24, generates the occupied recording area and the empty recording area of the recording / reproducing apparatus 24, and stores it in the RAM 344. Then, the data is recorded in the management data recording device 36. Further, the data management device 34 includes the input / output control devices 38 _{1 to} 3 3.
_8n Audio for recording according to each request
A recording area is allocated to the audio / video data input from the video equipment 4 ₁ to 4 _n, and the occupied recording areas of the audio / video data requested to be reproduced are notified to the input / output control devices 38 _{1 to} 38 _n, respectively.

FIG. 5 shows the recording / reproducing device 24 shown in FIG.
Dedicated recording area for audio / video data A and B recorded in the recording area of the recording medium, and exclusive recording area data for audio / video data A and B generated by the data management device 34 (file entry and echo entry ) And free recording area data (free space list). FIG. 6 is a diagram exemplifying the contents of recording area data generated by the data management device 34 shown in FIG. For example, as shown in FIG. 5A, audio / video data A and B are recorded on the recording medium of the hard disk array device 24, and the audio / video data A is 8 from the beginning of the recording medium.
0 block to 129 block and 230 block to 3
29 blocks (1 block is 1 gigabyte (G
B)), the audio / video data B is recorded in blocks 170 to 229 from the beginning of the recording medium, and the other recording areas are empty recording areas.

As shown in FIG. 5A, when the audio / video data A and B are recorded, for example, when the audio / video data A is recorded, the most recording area is 80 blocks or more of the recording medium. Exists as a free recording area near the beginning of the audio / video data A, all of the audio / video data A is recorded in blocks 170 to 229, and then the audio / video data recorded in blocks 80 to 129 is deleted. This may occur when the area is released and becomes an empty recording area, in which the former part of the audio / video data B is recorded and the latter part is recorded after 230 blocks.

As described above, since one audio / video data may be divided and recorded in a plurality of recording areas,
The data management device 34 creates the occupied recording area data of each of the audio / video data A and B as a file entry and a record entry in the form of a linked list shown in FIGS. 5B and 5C. . Further, the data management device 34 stores, for each of the audio / video data A and B, a file name and link data (file entry) indicating the first record entry in the RAM 344, as shown in FIG. 6A. .

Further, the data management device 34 has the RAM 3
An identification flag (deletable flag) indicating whether or not the audio / video data corresponding to the record entry may be deleted is added to the record entry stored in 44.
Among the values of the erasable flag, ON indicates erasable and OFF indicates erasable. Thus, the reason for adding the deletable flag to the record entry is, for example,
When a part of the audio / video data recorded in the recording / playback device 24 is referenced by another record entry, the referenced audio / video data is not deleted unnecessarily. This is because

Each record entry is shown in FIG. 6 (B).
As shown in FIG. 5, it is composed of link data indicating the next record entry, start position data indicating the start position of the recording area, and recording length data indicating the length of the recording area. If the link data has the end value (END), the next record entry does not exist, and the last part of the audio / video data is recorded in the recording area indicated by the record entry.

Further, the data management device 34 is a free recording area (free space) of the hard disk array device 24.
As shown in FIG. 5 (D), the free recording area data indicating the above is generated as a list (free space list) in the linked list format. As shown in FIG. 6C, the free space list is composed of link data of the next empty recording area, head position data indicating the head position of the empty recording area, and recording length data indicating the length of the empty recording area. Composed.

The microprocessor 340 of the data management device 34 records the updated data in the management data recording device 36 via the SCSIIF 348 each time the data is updated. When the audio / video data recording / reproducing device 3 is started up, the data management device 34 reproduces the respective data recorded in the management data recording device 36 from the management data recording device 36, reproduces the respective data, and updating the respective data based on the output control signal input from the audio and video equipment 4 ₁ to 4 _n after startup.

FIG. 7 shows the input / output control unit 38 shown in FIG.
It is a diagram showing a ₁ to 38 DEG _n each configuration. As shown in FIG. 7, the input / output control device 38 _i includes a microprocessor (CPU) 380, a ROM 382, a RAM 384, a control data IF 210 (control data IF 210 _{1 to} 210 _n).
(The same as FIG. 2) and the address generation circuit 394 are bus-connected via the local CPU bus 388 closed in the input / output control device 38 _i , and the dual port RAM 3
90 is the main CPU bus 32 (FIG. 3) and the local CPU
The recording / reproducing device control interface (recording / reproducing device IF) 392 connects the bus 388 and the local CPU bus 388 and the data bus 30.
The buffer memory 222 (buffer memories 222 ₁ to 2
22 _n ) and audio / video data IF 220
(Same as audio / video data IF 220 _{1 to} 220 _n ) are connected and configured. Input / output control device 38 _{1 to} 3
The audio / video data IF 220 of 8 _n is connected to the audio / video device 4 _i (FIG. 1), respectively.

With these components, the input / output control device 38 _i accesses the data management device 34 at the time of recording according to the input / output control signal including the data such as the file name and the data length from the audio / video equipment 4 _i. Then, the recording / reproducing device 24 receives the allocation of the recording area for recording the audio / video data requested to be recorded, and the allocated recording area is designated to the recording / reproducing device 24. The audio / video data that is input according to the predetermined protocol is recorded.

During reproduction, the input / output control device 38 _i is requested to reproduce by accessing the data management device 34 in accordance with an input / output control signal containing data such as a file name from the audio / video equipment 4 _i . Upon receiving the notification of the occupied recording area for audio / video data,
The video data is reproduced, and the reproduced audio / video data is output to the audio / video device 4 _{i according} to a predetermined protocol.

In the input / output control device 38 _i , the microprocessor 380, the ROM 382 and the RAM 384.
Operates as a computer stored in the ROM 382, controls each component of the input / output control device 38 _i ,
Recording of audio / video data to the recording / playback device 24
Playback and protocol control with the audio / video device 4 _i are executed.

The dual port RAM 390 is a main C
The data input from the data management device 34 side via the PU bus 32 is supplied to the microprocessor 380 via the local CPU bus 388, and the data input from the local CPU bus 388 is transferred via the main CPU bus 32. It is supplied to the management device 34. The recording / reproducing apparatus IF 392 supplies the data output from the microprocessor 380 to the recording / reproducing apparatus 24 to the recording / reproducing apparatus 24, and outputs the data output from the recording / reproducing apparatus 24 to the microprocessor 380. Supply to the microprocessor 380. The address generation circuit 394 generates an address of the buffer memory 222 under the control of the microprocessor 380 and controls the buffering operation of the buffer memory 222.

The operation of the input / output control device 38 _i when the audio / video device 4 _i requests the audio / video data recording / reproducing device 3 to reproduce the audio / video data will be described below. The audio / video device 4 _i includes an input / output control signal for requesting reproduction of audio / video data, including a file name of audio / video data for which reproduction is requested, to the control data IF 210 of the input / output control device 38 _i. Is output. This input / output control signal is sent from the control data IF 210 to the microprocessor 380.
The microprocessor 380 makes an inquiry to the data management device 34 via the dual port RAM 390 regarding the occupied recording area of the audio / video data requested to be reproduced. The data management device 34 searches the file entry (FIGS. 5B and 5C) using the file name of the inquired audio / video data, finds the corresponding record entry, and outputs the input / output control device 38 _i. To notify.

Further, the microprocessor 380, which has been notified of the record entry, uses the data bus 30 and recording / recording.
The exclusive recording area of the audio / video data to be reproduced is designated and reproduced by the recording / reproducing apparatus 24 via the reproducing apparatus IF392. Further, when the reproduced audio / video data is input from the recording / reproducing device 24 to the buffer memory 222 via the data bus 30, the microprocessor 380 performs protocol control with the recording / reproducing device 24. Further, the microprocessor 380 has the address generating circuit 3
The buffering operation of the buffer memory 222 is controlled via 94, and protocol control with the audio / video equipment 4 _i is further performed, and output to the audio / video equipment 4 _i via the audio / video data IF 220. Let

The operation of the input / output control device 38 _i when the audio / video device 4 _i requests the audio / video data recording / reproducing device 3 to record audio / video data will be described below. The audio / video device 4 _i includes an input / output requesting recording of audio / video data including a file name and data length of audio / video data requested to be recorded, to the control data IF 210 of the input / output control device 38 _i. Output a control signal. This input / output control signal is input from the control data IF 210 to the microprocessor 380, and the microprocessor 380
Requests the data management device 34 to allocate a recording area via the dual port RAM 390. The data management device 34 allocates a recording area based on the empty recording area and the data length of the audio / video data, and notifies the microprocessor 380 via the dual port RAM 390.

Upon receiving the notification of the recording area allocation, the microprocessor 380 designates the recording area in the recording / reproducing apparatus 24 via the data bus 30 and the recording / reproducing apparatus IF 392. When the audio / video data is input to the audio / video data IF 220 from the audio / video device 4 _i ,
The microprocessor 380 performs protocol control with the audio / video device 4 _i . Further, the microprocessor 380 controls the address generation circuit 394 to control the buffering operation of the buffer memory 222, and performs protocol control with the recording / reproducing device 24. Further, the microprocessor 380 causes the audio / video data input from the audio / video device 4 _i to be output to the recording / reproducing device 24 via the data bus 30, and the audio / video data is recorded / reproducing device 24. Record as specified in.

Hereinafter, an audio / video data processing system 1 using the audio / video data recording / reproducing apparatus 3 shown in FIG.
Will be described. First, the operation of the audio / video data recording / reproducing apparatus 3 in the audio / video data processing system 1 for reproducing the audio / video data supplied from the audio / video equipment 4 _i from the recording / reproducing apparatus 24 will be described.

FIG. 8 is a block diagram showing the voice / voice in the second embodiment.
Processing when the video data recording / reproducing apparatus 3 supplies the input audio / video data reproduced from the recording / reproducing apparatus 24 shown in FIG. 3 to the audio / video equipment 4 _i shown in FIG. It is a flowchart shown. In FIG. 9, the audio / video data recording / reproducing apparatus 3 reproduces the input audio / video data reproduced from the recording / reproducing apparatus 24 shown in FIG.
In the case of supply to the audio-video device 4 _i shown in FIG. 1 is a signal sequence diagram between the audio and video equipment 4 _i, the input-output control unit 38 _i, the data management unit 34 and a recording and reproducing apparatus 24.

As shown in FIGS. 8 and 9, step 1
In 02 (ST102), the audio / video device 4 _i is
File name FILE of audio / video data A (for example, FIG. 5A) for audio / video data recording / reproducing device 3
_A, and outputs an OPEN_PLAY command to reproduce the audio / video data A recorded in the recording / reproducing device 24. The input / output control device 38 _i uses this OP
Receive the EN_PLAY command.

At step 104 (ST104),
The input / output control device 38 _i outputs an OPEN_PLAY command to the data management device 34. Step 10
In 6 (ST106), the data management device 34 reads the file entry (FE) recorded in the management data recording device 36, and searches the record entry (RE) of the audio / video data A using the file name FILE_A. Then, the record entry of the audio / video data A is found. In step 108 (ST108), the data management device 34 outputs the found file entry and record entry of the audio / video data A to the input / output control device 38 _i .

At step 110 (ST110),
The audio / video device 4 _i outputs a PLAY command for starting the reproduction of the audio / video data A to the audio / video data recording / reproducing device 3. The input / output control device 38 _i is
This PLAY command is received. Step 112 (S
In T112) and step 114 (ST114), the input / output control device 38 _i determines the occupied recording area of the audio / video data based on the file entry and the record entry of the audio / video data A input from the data management device 34. It is calculated and designated to the recording / reproducing device 24, and a READ command is output to the recording / reproducing device 24.

At step 116 (ST116),
The recording / reproducing device 24 reproduces the audio / video data A from the designated recording area and outputs it to the input / output control device 38 _i . The input / output control device 38 _i receives the reproduced audio / video data A. Step 118 (ST118)
At, the input / output control device 38 _i writes the received audio / video data A in the buffer memory 222.

At step 120 (ST120),
The input / output control device 38 _i reads the audio / video data A from the buffer memory 222, and outputs the audio / video data IF2.
Output to 20. Step 122 (ST122)
In, the input / output control device 38 _i outputs the reproduced audio / video data to the audio / video device 4 _i via the audio / video data IF 220.

Next, in the audio / video data processing system 1, the audio / video data recording / reproducing apparatus 3 records the audio / video data requested to be reproduced by the audio / video equipment 4 _i in the recording / reproducing apparatus 24. The operation will be described. FIG.
In the second embodiment, is the audio / video data recording /
6 is a flowchart showing a process when the reproducing apparatus 3 records the audio / video data input from the audio / video device 4 _i shown in FIG. 1 in the recording / reproducing apparatus 24 shown in FIG. FIG. 11 shows that in the second embodiment, the audio / video data recording / reproducing apparatus 3 records the audio / video data input from the audio / video device 4 _i shown in FIG. FIG. 9 is a signal sequence diagram among the audio / video device 4 _i , the input / output control device 38 _i , the data management device 34, and the recording / reproducing device 24 when recording on the reproducing device 24.

As shown in FIGS. 10 and 11, in step 202 (ST202), the audio / video equipment 4 _i
OPEN_REC including the file name FILE_B and data length of the audio / video data B for preparing the input / output control device 38 _i for recording the audio / video data B (for example, FIG. 5A). The command is output as an input / output control signal to the audio / video data recording / reproducing device 3. The input / output control device 38 _i of the audio / video data recording / reproducing device 3 receives this OPEN_REC command.

At step 204 (ST204),
The input / output control device 38 _i sends the data management device 34 an OPEN_WRITE command requesting allocation of a recording area for recording the audio / video data B, including the file name FILE_B and the data length. In step 206 (ST206), the data management device 34 receives the OPEN input from the input / output control device 38 _i.
File name included in _WRITE command FILE_
File entry (FIG. 5 (B),
(C)) is generated, stored in the RAM 344, and recorded in the management data recording device 36.

At step 208 (ST208),
The data management device 34 secures a storage area for recording the audio / video data B based on the data length of the audio / video data B and the free space list (FIG. 5D).
A record entry (RE; FIGS. 5B and 5C) is generated. In step 210 (ST210), the data management device 34 outputs the echo entry and the file entry to the input / output control device 38 _i . In step 212 (ST212), the audio / video device 4 _i
Is the audio / video data recording / playback device 3
Outputs a REC command to start recording video data. The control data IF 210 of the input / output control device 38 _i is
This REC command is received.

At step 214 (ST214),
Audio / video data IF 220 of input / output control device 38 _i
Writes (writes) the audio / video data B input from the audio / video device 4 _i in the buffer memory 222. In step 216 (ST216), the input / output control device 38 _i records the recording area of the recording medium of the recording / reproducing device 24 for recording the audio / video data B based on the record entry and the file entry received from the data management device 34. To calculate.

At step 218 (ST218),
The input / output control device 38 _i specifies a recording area in which the audio / video data B is recorded in the recording / reproducing device 24 via the recording / reproducing device IF 392 and inputs a write command to control the recording / reproducing device 24. The audio / video data B stored in the buffer memory 222 is recorded in the designated recording area. In step 220 (ST220),
The recording / reproducing device 24 records the audio / video data B input from the input / output control device 38 _{i in} the designated recording area of the recording medium.

Next, the audio / video data recording / reproducing apparatus 3
A process of updating the free space list by the data management device 34 will be described. From the audio / video device 4 _i , including the file name of the audio / video data to be deleted,
When an input / output control signal for deleting the audio / video data recorded in the reproduction device 24 is output to the audio / video data recording / reproduction device 3, the input / output control device 38
_i receives this input / output signal and outputs it to the data management device 34.

The data management device 34 searches for a file entry using the file name included in this input / output signal, and checks the erasable flag of the echo entry corresponding to the file name. The data management device 34 deletes the record entry and the file entry only when the deletable flag is ON, releases the recording area in which the corresponding audio / video data is recorded, and updates the free space list. The data management device 34 further records the updated free space list in the management data recording device 36.

As described above in the second embodiment, in the audio / video data recording / reproducing apparatus 3 according to the present invention, the audio / video data is the same as other data such as protocol control data. Almost never mixed up on the bus. Accordingly, in the audio and video data recording and reproducing apparatus 3, the load on the processing such as the protocol control and recording area management on the particular microprocessor is not concentrated, voice-are the number and connection of the output control device 38 _i
The number of video devices 4 _i can be significantly increased as compared with the audio / video data recording / reproducing device 2 shown in the first embodiment.

Further, even when a large amount of audio / video data is transmitted / received on the data bus 30, data relating to protocol control and recording area management does not collide with audio / video data, and the protocol control / recording area is maintained. The management process can be executed quickly, and the response of recording / reproducing audio / video data to the audio / video device 4 _i is fast.

Audio / video data recording / reproducing apparatus 3
Can be used for recording / reproducing other data such as computer data in addition to audio / video data.
Further, the processing contents shown in the flowcharts and the like in the second embodiment are examples, and other processing procedures can be adopted as long as the same function and performance can be guaranteed. Further, in the audio / video data recording / reproducing apparatus 3, each component may be configured as software or hardware as long as equivalent functions and performances can be guaranteed.

Third Embodiment Hereinafter, a third embodiment of the present invention will be described. The audio / video data recording / reproducing apparatus 3 shown in the third embodiment is the second
Audio / video data recording / reproducing apparatus 3 shown in the embodiment
Similarly, a plurality of audio data and video data or any one of them (audio / video data) is recorded in the recording / reproducing device 24, and is recorded in the audio / video data recording / reproducing device 3 (input / output control device 38 _i ). providing the audio and video data to be edited processing for audio and video equipment 4 _i in response to a request from the audio-video device 4 _i connected.

However, when the editing process is performed by using the audio / video data recording / reproducing apparatus 3 shown in the second embodiment, the editing process is performed together with the audio / video data (material data) which is the object of the editing process. The audio / video data (edit result data) obtained as a result of the recording / playback device 2
It is necessary to record in 4. Therefore, in the third embodiment, in the editing result data, data (editing data) indicating which part of the material data is used is received from the audio / video device 4 _i , and based on the editing data, An audio / video data recording / reproducing apparatus 3 improved so as to reproduce audio / video data having the same content as the edited result data will be described.

More specifically, the audio / video data recording / reproducing apparatus 3 of the third embodiment has an input / output control unit 38.
The contents of the ROM 382 of _i have been changed, and the input / output control device 38 _i has, in addition to the functions shown in the second embodiment,
The material recorded in the recording / reproducing device 24 based on the edit data input as the input / output control signal from the audio / video device 4 _i (FIG. 1) and the occupied recording area data managed by the data management device 34. A function of supplying audio / video data having the same content as the edited result data to the audio / video device 4 _i by adding and reproducing the portion (partial data) included in the edited result data of the data is added. ..

The contents of the processing for the input / output control device 38 _i to generate the audio / video data having the same contents as the above-mentioned editing result data will be described with a specific example. FIG. 12 (A) shows
In the third embodiment, the audio / video data A to D are
FIG. 12B shows an occupied recording area occupied in the recording medium of the recording / reproducing apparatus 24 shown in FIG. 3, and FIG. It is a figure which illustrates the audio | video image (editing result data) obtained as a result.

FIG. 13 shows the structure of FIG. 1 in the third embodiment.
The audio / video device 4 _i shown in FIG. 12 reproduces the audio / video data having the same contents as the editing result data shown in FIG. It is a figure which shows the content of the edit data output with respect to _i .

For example, as shown in FIG. 12A, audio / video data A to D are recorded in the recording medium of the recording / reproducing device 24.
Are recorded, and the occupied recording areas of the audio / video data A to D are, for example, 100 blocks to 189 blocks, 200 blocks to 269 blocks, 300 blocks to 379 blocks, and 400 blocks to 469 blocks, respectively.

Audio / video data A shown in FIG.
~ D as material data, the audio / video device 4 _i performs the editing process, and, for example, 10 from the beginning of the audio / video data A.
Blocks to 49 blocks (data length 40 blocks), 20 blocks to 24 blocks from the beginning of audio / video data B (data length 5 blocks), 30 blocks to 69 blocks from the beginning of audio / video data C (data length 40 blocks) , And the partial data of 20 blocks to 24 blocks of audio / video data (5 blocks of data length) are cut and edited to generate edit result data having the content shown in FIG.

This editing result data is recorded / reproduced by the recording / reproducing apparatus 2
If recorded in 4, the audio / video data of the same content will be redundantly recorded and wasteful.
_i outputs the edited data shown in FIG. 13 to the input / output control device 38 _i of the audio / video data recording / reproducing device 3. As shown in FIG. 13, in the edit data, the file name of each partial data and the reproduction start position and reproduction end position in each material data are recorded. For example,
The edit data for reproducing the audio / video data having the same contents as the edit result data shown in FIG. 12B has the contents shown in the table below.

[0092]

[Table 1] ====================: File name: Playback start position: Playback end position: =============== ======: FILE_A: 10: 50: (audio / video data A) FILE_B: 20: 25: (audio / video data B) FILE_C: 30: 70: (audio / video data C) FILE_D: 20: 25: (voice / video data D) =====================: (1)

The input / output control device 38 _i has the file entry and record entry generated by the data management device 34 for the edit data and the audio / video data A to C (see FIGS. 5B and 5C). The partial data (partial data A to D) of the audio / video data A to D included in the edited result data is recorded / reproduced based on
The recording area occupied by the recording medium is calculated by the following formula. Further, the input / output control device 38 _i specifies the calculated recording area to the recording / reproducing device 24 and reproduces the partial data A to D from each of the specified recording areas in the order indicated by the edit data.

[0094]

[Table 2] =====================: File name: First block: End block: ================ ====: Partial data A: 110: 149: Partial data B: 220: 224: Partial data C: 330: 369: Partial data D: 420: 424: ============= ========: (2)

By changing the operation of the input / output control device 38 _i of the audio / video data recording / reproducing device 3 as described above, a portion (partial data) of each material data recorded in the recording / reproducing device 24. It is possible to reproduce the same audio / video data as the edit result without further recording the edit result data composed of the above in the recording / reproducing device 24 in duplicate with the material data. Therefore, in the audio / video data recording / reproducing device 3 shown in the third embodiment, the recording capacity of the recording / reproducing device 24 is not wasted, and the audio / video data of the audio / video device 4 _{i for} a long time is not wasted. Can be edited.

Audio / video data recording / reproducing apparatus 3
May be used only for one of the video data and the audio data. Further, as long as the same function and performance can be realized, each component of the audio / video data recording / reproducing device 3 may be configured by software or hardware. Further, each component of the audio / video data recording / reproducing apparatus 3 can be replaced with other means having equivalent functions and performances.

Fourth Embodiment Hereinafter, a fourth embodiment of the present invention will be described. According to the recording area management method by the input / output control device 38 _i of the audio / video data recording / reproducing device 3 shown in the third embodiment, a predetermined effect of effectively utilizing the recording capacity of the recording / reproducing device 24 is achieved. However, the edited data is recorded in the RAM 384 of the input / output control device 38 _i (FIG. 7) as it is received from the audio / video device 4 _i, and the data indicating the recording area of the partial data is reproduced. Since the conversion is performed, there is a problem that it takes a long processing time. In addition, until the content of the edited data is analyzed, it is not known which of the material data recorded in the recording / reproducing device 24 is used as the material data, and regardless of whether it is used as the material data. A situation may occur in which the data is deleted without being deleted.

In order to solve such a problem, in the audio / video data recording / reproducing device 3 shown in the fourth embodiment, the contents of the ROM 342 of the input / output control device 38 _i are changed, and the input / output control device 38 is changed. _i is a file entry and a record entry received from the data management device 34 (see FIGS. 5B and 5C and FIGS. 6A and 6B).
And the edit data input from the audio / video equipment 4 _i, a playback list in the linked list format indicating a recording area of partial data included in the same edit result data is generated in advance to generate the data management device. It outputs to 34. The data management device 34 stores the input reproduction entry in the RAM 344, and further stores the management data recording device 3
Record in 6.

When the audio / video device 4 _i requests the reproduction of arbitrary edit result data, the input / output control device 38 _i requests the data management device 34 to reproduce the edit result data requested to be reproduced. It requests a playback entry and receives a playback entry from the data management device 34. The input / output control device 38 _i specifies the recording area indicated by the received reproduction entry to the recording / reproducing device 24 and controls the recording / reproducing device 24 to reproduce the partial data from the specified recording area in the order indicated by the edit data. By doing so, it is possible to quickly reproduce the audio / video data having the same contents as the edited result data.

Further, as in the second embodiment, voice / voice
The data management device 34 of the video data recording / reproducing device 3 is
When an identification flag (deletable flag) is added to the record entry and the playback entry, and the recording area is deleted,
By checking the erasable flag, the material data is prevented from being deleted carelessly. The components other than the contents of the ROM 382 of the input / output control device 38 _i of the audio / video data recording / reproducing device 3 and the ROM 342 of the data management device 34 in the fourth embodiment are the same as those in the third embodiment. is there.

A specific example will be described below. FIG.
In order to reproduce the file entry and record entry of the audio / video data (material data) A to B shown in FIG. 12A and the editing result data shown in FIG. 12B in the fourth embodiment. FIG. 6 is a diagram exemplifying edit data used for, and a reproduction entry generated by processing of a data management device 34.

As shown in FIG. 14 (A), the data management device 34 uses the audio / video data A to A shown in FIG. 12 (A).
A file entry and a record entry for each of the audio / video data A to D are generated based on the D.
It is stored in 342 and is recorded in the management data recording device 36. In this state, the audio / video device 4 _i generates the same audio / video data as the edited result data shown in FIG. 12B, so that the edited data shown in FIG. Is output to the input / output control device 38 _i . This edit data consists of 10 blocks of material data A
Partial data in the range of 49 blocks, 20 of material data B
The partial data in the range of blocks to 24 blocks, the partial data in the range of 30 blocks to 69 blocks of the material data C, and the partial data included in the range of the 20th block to the 24th block of the material data D are edited in this order. It is shown that it is included in the result data X.

The input / output control device 38 _i requests the data management device 34 for the record entry and the file entry of the audio / video data A to D included in the input edit data. In response to this request, the data management device 34 outputs the record entry and the file entry of the audio / video data to the input / output control device 38 _i .

The input / output control device 38 _{i which} has received the file entry and record entry of the audio / video data A to D from the data management device 34, the partial data A to D based on the edit data and the received file entry and record entry. The linked list format reproduction entry (FIG. 14C) showing the occupied recording areas in the recording medium of the D recording / reproducing apparatus 24 in association with each other is generated and output to the data management apparatus 34. The data management device 34 stores the input reproduction entry in the RAM 344 and further records it in the management data recording device 36. Since the partial data included in the edited result data is the same as that in the third embodiment, the reproduction entry shown in FIG. 14C has the same contents as in Table 2 shown in the third embodiment.

When the edited result data X is reproduced, a voice
The video equipment 4 _i outputs an input / output control signal requesting reproduction of the edited result data X to the input / output control device 38 _i . The input / output control device 38 _i outputs the input / output control signal to the data management device 34. The data management device 34 outputs the reproduction entry of the edit result data X requested to be reproduced to the input / output control device 38 _i . The input / output control device 38 _i designates the recording area of the recording medium indicated by the reproduction entry to the recording / reproducing device 24 based on the reproduction entry received from the data management device 34, and the partial data A to D from the designated recording area. Are reproduced in the order indicated by the edited data.

As shown in the third embodiment, the editing data is stored in the RAM 384 of the input / output control device 38 _i as it is, and the recording area of the partial data is calculated during reproduction. As shown in the embodiment, FIG.
If a reproduction entry is generated in the linked list format shown in FIG. 4 (C) and stored in the RAM 344 of the data management device 34, the calculation of the recording area of the partial data at the time of reproduction becomes unnecessary, and the editing is quickly performed. It is possible to reproduce audio / video data having the same content as the result data. Further, since all the reproduction entries generated by the input / output control devices 38 _{1 to} 38 _n are collectively managed by the data management device 34, the reproduction entries generated by any of the input / output control devices 38 _{1 to} 38 _n are input / output. usable controller 38 _1-38 all _n are shared.

As shown in FIGS. 12A and 12B, when the partial data is divided into four blocks, the calculation processing time of the recording area of the partial data at the time of reproduction is particularly Although not a hindrance, the calculation processing time increases as the number of divisions of the partial data increases, and the possibility of hindering the reproduction increases. Therefore, when the edited data of the edited result data including many partial data is input from the audio / video device 4 _i to the input / output control device 38 _i , the merit of generating the reproduction entry in advance becomes large.

The operation of the audio / video data recording / reproducing apparatus 3 in the fourth embodiment will be described below. FIG.
4 is a flowchart showing a process in which the data management device 34 shown in FIG. 3 creates a reproduction entry. FIG. 16 is a diagram showing edit data, a file entry, and a record entry relating to a reproduction entry generation process, and a reproduction entry obtained as a result of the reproduction entry generation process.

As shown in FIG. 15, step 302 (S
At T302), the numerical value 1 is assigned to the variables n and j.
The variable n is used to retrieve the edit data shown in FIG. 16A and the record entry shown in FIG. 16B, and the variable j is used to retrieve the reproduction entry shown in FIG. 16C. Used for. Step 350 (ST35
0), the input / output control device 38 _i causes the file name (FILE (n) in FIG. 16A) included in the edit data, the reproduction start position (START (n) in FIG. 16A), and the reproduction end. Position (END (n) of FIG. 16 (A)), file entry and echo entry of audio / video data serving as material data received from the data management device 34 (RE (n, I) of FIG. 16 (B))
), A reproduction entry (RE (j) in FIG. 16C) is generated. The contents of the processing are shown in ST352 to ST364.

At step 352 (ST352),
The input / output control device 38 _i obtains the record entry RE (n, is) of the material data having the reproduction start position (START (n)) from the record entry RE (n, i) received from the data management device 34. . In step 354 (ST354), the input / output control device 38 _i receives the record entry RE (n, ie) of the material data having the reproduction end position (END (n)) from the data management device 34. Calculate from (n, i).

At step 356 (ST356),
The input / output control device 38 _i substitutes the numerical value is for the variable i. In step 358 (ST358), the input / output control device 38 _i generates the reproduction entry RE (j). In step 360 (ST360), the input / output control device 3
8 _i determines whether or not the reproduction end position exists in the same record entry, that is, whether or not the variable i is the numerical value is. When the variable i is the numerical value is, ST36
When the variable i is not the numerical value is, the process proceeds to step S4.
The process proceeds to T362.

At step 362 (ST364),
The input / output control device 38 _i has a numerical value of 1 for each of variables i and j.
Is added (variables i and j are incremented). In step 364 (ST366), the input / output control device 3
8 _i increments the variable j and proceeds to the process of ST304.

At step 304 (ST304),
The input / output control device 38 _i determines whether or not the variable n is a numerical value end. If the variable n is the numerical value end,
The generated reproduction entry is output to the data management device 34, and the process ends. If the variable n is not the numerical value end, the process proceeds to ST306. Step 306 (ST30
In 6), the input / output control device 38 _i increments the variable n and proceeds to the process of ST350.

As described in the fourth embodiment, the editing result data is recorded by changing the processing contents of the input / output control device 38 _i of the audio / video data recording / reproducing device 3 and the data management device 34.・ Voice with the same content as the edited result data without the need to record it on the playback device 24.
Video data can be played. Moreover, since the reproduction entry is generated in advance and the reproduction is performed based on this reproduction entry, the processing time for calculating the recording area of the partial data shown in the third embodiment is unnecessary. Therefore, the processing time for calculating the recording area does not hinder the reproduction.

Moreover, the reproduction entry generation processing shown in the fourth embodiment is performed by the ROM 38 of the input / output control device 38 _i .
2 and the storage contents of the ROM 342 of the data management device 34 are merely rewritten, and there is no need to make any changes to the hardware of the audio / video data recording / reproducing device 3 shown in the third embodiment.

Audio / video data recording according to the invention
The reproduction device 3 not only generates a reproduction entry from four material data, but also combines the partial data of five or more material data to reproduce the audio / video data having the same content as the edited result data. It goes without saying that can be generated.

Further, the control system 10 shown in the fourth embodiment.
The algorithm and the signal sequence between the audio / video device 4 _i and the control system are examples, and other algorithms and signal sequences can be adopted as long as the same function and performance can be realized. Also, the audio / video data recording / reproducing device 3 shown in the fourth embodiment can be modified in the same manner as in the third embodiment.

Fifth Embodiment Hereinafter, a fifth embodiment of the present invention will be described. FIG.
The input / output control device 38 _i and the data management device 34 of the audio / video data recording / reproducing device 3 in the fifth embodiment.
It is a figure which shows operation | movement of (FIG. 3). However, in the fifth embodiment, the data length of one block is, for example, 10 Mbytes. For example, the audio / video device 4 _i has the material data A to D shown in FIG. 12A in the third embodiment.
Partial data A to D of data length 40 blocks, 5 blocks, 40 blocks and 5 blocks included in each
When (FIG. 17 (B)) is edited to obtain the edited result data shown in FIG. 12 (B), the input / output control device 38 _i of the audio / video data recording / reproducing device 3 has the In the embodiment, the editing data shown in FIG. 14B is input from the audio / video device 4 _i . This edited data and FIG.
When the input / output control device 38 _{i of} the audio / video data recording / reproducing device 3 shown in the fourth embodiment performs processing based on the record entries of the material data A to D shown in FIG. The reproduction entry of the edited result data X shown in (C) is obtained.

However, the partial data of the material data B and D (partial data B and D) has a short data length of 5 blocks. When reproducing audio / video data having the same content as the edited result data, the partial data A, C
Since the last part of each and the start part of each of the partial data B and D are recorded in separate recording areas on the recording medium of the recording / reproducing device 24, they are recorded at the end of reproduction of the partial data B and D. It is necessary to access the recording area of the recording medium of the reproducing device 24, which is far from the recording medium, and wait for rotation. on the other hand,
Since the partial data B and D each have a small data length of 5 MB, the buffer memory 222 (FIG. 7) of the input / output control device 38 _i may underflow within the time required for access and rotation waiting. If an underflow occurs in the buffer memory 222, continuous reproduction becomes impossible. The audio / video data recording / reproducing apparatus 3 in the fifth embodiment is intended to solve such a problem.

In order to continuously reproduce partial data whose data length is short enough to cause underflow of the buffer memory 222, the input / output control device 38 _{i according to} the fifth embodiment uses the audio / video device. The edited data (FIG. 14 (B)) received from the device 4 _i is analyzed, and the short partial data and this short partial data are recorded / reproduced by the recording / reproducing apparatus 2 in advance.
The recording is continuously recorded in a predetermined recording area of the recording medium No. 4 to avoid the above-mentioned problem as a data length in which no underflow occurs in the buffer memory 222. The fifth
Audio / video data recording / reproducing apparatus 3 in the embodiment
Of the input / output control device 38 _i , that is, each component other than the storage content of the ROM 382 of the input / output control device 38 _{i is} the same as each component of the audio / video data recording / reproducing device 3 in the fourth embodiment. Is the same.

The outline of the processing of the input / output control device 38 _i of the audio / video data recording / reproducing device 3 in the fifth embodiment will be described below with a specific example. As mentioned above,
Material data A recorded in 100 blocks to 189 blocks, 200 blocks to 269 blocks, 300 blocks to 379 blocks and 400 blocks to 469 blocks of the recording medium of the recording / reproducing apparatus 24, respectively.
Of D (FIG. 17A), 110 blocks to 1 each
49 blocks (data length 40 blocks), 220 blocks to 224 blocks (data length 5 blocks), 330 blocks to 369 blocks (data length 40 blocks) and 420 blocks to 424 blocks (data length 5 blocks) are partial data A to D. (FIG. 17B) is included in the edited result data.

For example, the buffer memory 222 (FIG. 7)
However, if the data length is 10 blocks or less and underflow may occur, there is a possibility that continuous reproduction cannot be performed when reproducing the partial data B and D. On the other hand, as shown in FIG. 17B, even if the partial data A and C are divided into partial data A ′ and C ′ having a data length of 35 blocks and partial data a and c having a data length of 5 blocks, the partial data A When playing ', it can be played continuously without any problems.

Taking advantage of this point, the input / output control device 38 _i in the fifth embodiment controls the recording system 20, and FIG.
As shown in (C), the partial data a and c are prepended to the short partial data B and D, and the partial data a having a data length of 10 blocks is stored.
b and cd are recorded in advance in a predetermined recording area (for example, 1000 blocks to 2000 blocks; compilation recording area) of the recording medium of the recording / reproducing device 24.

Further, as shown in FIG. 17D, for the partial data A ′, ab, C ′, cd, the same reproduction entry as in the fourth embodiment is generated and output to the data management device 34. . The data management device 34 stores this reproduction entry in the RAM 344 and further records it in the management data recording device 36.

When reproduction of the edited result data shown in FIG. 12B is requested from the audio / video equipment 4 _i to any of the input / output control devices 38 _{1 to} 38 _n , the input / output control which has received the request any device 38 ₁ to 38 DEG _n requests the reproduction entry of the edited result data requested to be reproduced to the data management device 34. In response to this request, the data management device 34 requests the input / output control devices 38 _{1 to} 3 that requested the reproduction entry.
The playback entry is output to any of 8 _n . Any of the input / output control devices 38 _{1 to} 38 _n that has received the reproduction entry reproduces the same audio / video data as the edited result data based on the received reproduction entry.

As described above, partial data having a data amount that does not cause underflow in the buffer memory 222 is recorded in advance in the compilation recording area, and further, the partial data recorded in the normal recording area and the compilation recording area are recorded. A reproduction entry is generated through the partial data recorded in the area, and the reproduction entry is generated according to the request of the audio / video device 4 _i .
By reproducing the partial data A ′, ab, C ′, cd from the recording / reproducing device 24 based on the reproducing entry shown in (D), the audio / video data recording / reproducing device shown in the fourth embodiment. In addition to the effect of quick reproduction of No. 3, it is possible to further guarantee continuous reproduction of the same audio / video data as the edited result data.

Here, as shown in FIG. 17D, the value of the deletable flag of the partial data recorded in the compilation recording area is set to ON, and the value of the deletable flags of the other partial data is set to OFF. To do. Figure 17 shows the erasable flag
The reason for setting the value shown in (D) is that even if the data recorded in the compilation recording area is deleted, the original material data is recorded in the recording / reproducing device 24 and is not lost.

The data length of the partial data A and C is 15
When the number of blocks is less than a block, the partial data B and D are added to the partial data A and C, the partial data B and D are recorded in the compile recording area, and a reproduction entry is generated, whereby continuous reproduction can be guaranteed. Further, even if the partial data A, C and the partial data B, D are added and each of them does not reach 10 blocks, the partial data (not shown) before the partial data A is further converted into the partial data A, B. The partial data (not shown) after the partial data D is added to the partial data C and D, or all the partial data A to D are continuously recorded in the compile recording area. It is possible to guarantee proper reproduction.

The same effect can be obtained by adding a part of the immediately following partial data to the short partial data instead of the immediately preceding partial data. In addition, the process of previously recording a part or all of the immediately preceding partial data in the compile recording area as described above is referred to as a compile process in the fifth embodiment.

Details of the compiling process by the input / output control device 38 _i in the fifth embodiment will be described below. FIG. 18 is a flowchart showing the contents of the compiling process performed by the input / output control device 38 _i of the audio / video data recording / reproducing device 3 in the fifth embodiment. FIG.
Of the audio / video device 4 _i , the input / output control device 38 _i and the data management device 34 when the input / output control device 38 _i of the audio / video data recording / reproducing device 3 performs the compiling process in the fifth embodiment. It is a signal sequence diagram which shows the signal sequence in between. FIG. 20 shows ST4 shown in FIG.
It is a flowchart which shows the processing content of 50. FIG.
9 is a flowchart showing in more detail the contents of a compilation process performed by the input / output control device 38 _i of the audio / video data recording / reproducing device 3 in the fifth embodiment.

As shown in FIGS. 18 and 19, in step 402 (ST402), the audio / video equipment 4 _i
The editing data; wherein (VFL Virtual File List), to receive the editing data to the output control device 38 _i outputs instruction (VFL_DOWNLOAD command) to the output control device 38 _i. Input / output control device 38
_i receives this VFL_DOWNLOAD command. In step 404 (ST404), the input / output control device 38 _i outputs the received VFL_DOWNLOAD command to the data management device 34.

In step 406 (ST406) and step 408 (ST408), the data management device 3
Reference numeral 4 retrieves a file entry (FE) and a record entry (RE) of the material data including the partial data included in the edited result data, based on the edited data, and generates a reproduction entry (FIG. 14C). Further, the data management device 34
Increments the deletable flag of the record entry found as a result of the search and sets the value of the deletable flag to OF.
Change to F.

At step 410 (ST410),
The data management device 34 outputs the generated reproduction entry and the file entry and record entry found as a result of the search to the input / output control device 38 _i . In step 412 (ST412), the input / output control device 3
8 _i analyzes the reproduction entry sent from the data management device 34 and searches for partial data having a short data length and incapable of continuous reproduction.

At step 450 (ST450),
The input / output control device 38 _i determines the necessity of compilation processing. The contents of the processing relating to the determination of the necessity of the compilation processing by the input / output control device 38 _i are as shown in FIG. ST4 only if compilation is required
Proceed to step 16. In step 416 (ST416), the input / output control device 38 _i determines the data management device 34 _i.
To secure a recording area (compile recording area) necessary for the compilation processing. The data length of the compile recording area is 2 cT or more, where the partial data that cannot be continuously reproduced is the partial data having the data length T or less and the number of the partial data that cannot be continuously reproduced is c.

At step 418 (ST418),
The data management device 34 secures a compilation recording area,
Notify the input / output control device 38 _i . Step 420 (S
In T420), the input / output control device 38 _i performs the compiling process (FIG. 17). The input / output control device 38
Details of the contents of the compiling process by _i are as shown in FIG.

At step 422 (ST422),
The input / output control device 38 _i creates a new reproduction entry based on the result of the compilation process, and the data management device 3 _i
4 is output. In step 424 (ST424), the data management device 34 determines the input / output control device 38 _i.
The new playback entry received from the above is replaced with the playback entry created in the processing of ST406 and updated.

In the flow chart shown in FIG. 21, the data b (k), s in the reproduction entry R (k) is stored.
(J) is defined as shown in FIG. 22, and variables Z and s
(K) is defined as shown in FIG. That is, as shown in FIG. 23 (A), the variable Z in ST566 in FIG. 21 has a data length T or more in addition to the short partial data (FIG. 17 (B)). Indicates the data length of the data removed from the immediately preceding partial data. Also, the numerical value s in ST544 in FIG.
As shown in FIG. 23 (B), (k) -TX is a portion immediately after the short partial data in order to make the data longer than the data length T in addition to the short partial data (FIG. 20 (B)). Indicates the data length of the data removed from the data.

Based on the reproduction entry generated as described above, it is possible to reproduce the same reproduction data as the editing result data requested by the audio / video equipment 4 _i , and, as shown in the fifth embodiment. Audio / video data recording
The reproducing apparatus 3 can reproduce the same audio / video data as the edited result data continuously as quickly and reliably as the audio / video data recording / reproducing apparatus 3 shown in the fourth embodiment. .

The processing contents when the audio / video device 4 _i requests the audio / video data recording / reproducing apparatus 3 to delete the audio / video data will be described below. 24 is the same as FIG.
When the audio / video device 4 _i shown in FIG. 1 requests the audio / video data recording / reproducing device 3 to delete the audio / video data, the input / output control device 38 _i and the data management device 3
It is a flowchart which shows the process of 4. 25 is the same as FIG.
When the audio / video device 4 _i shown in FIG. 1 requests the audio / video data recording / reproducing device 3 to delete the audio / video data, the audio / video device 4 _i , the input / output control device 38 _i, and the data management. FIG. 6 is a signal sequence diagram showing signals transmitted and received between devices 34.

As shown in FIGS. 24 and 25, in step 580 (ST580), the audio / video device 4 _i
Requests deletion of audio / video data and outputs a DELETE command including the file name of the audio / video data requested to be deleted to the input / output control device 38 _i . The input / output control device 38 _i receives this DELETE command. In step 582 (ST582), the input / output control device 38 _i receives the DEL received by the data management device 34.
Output ETE command.

At step 584 (ST584),
The data management device 34 refers to the erasable flag of the record entry (RE; reproduction entry) of the audio / video data requested to be deleted. If the value is ON, the process proceeds to ST586, and if the value is OFF, Ends the process. Step 586 (ST586) and Step 588 (ST
In 588), the data management device 34 deletes the file entry (FE) and the record entry (RE) and adds it to the free space list.

The processing contents when the audio / video device 4 _i requests the audio / video data recording / reproducing apparatus 3 to delete the audio / video data will be described below. 26 is the same as FIG.
The processing of the input / output control device 38 _i and the data management device 34 when the audio / video device 4 _i shown in FIG. 2 requests the audio / video data recording / reproducing device 3 to delete the reproduction entry (editing data). It is a flowchart shown. FIG.
7, audio and video equipment 4 _i shown in FIG. 1, the audio and video equipment 4 _i when requested to delete the reproduction entry (edited data) to the audio and video data recording and reproducing apparatus 3, O It is a signal sequence diagram which shows the signal transmitted / received between the control apparatus 38 _i and the data management apparatus 34.

As shown in FIGS. 26 and 27, in step 880 (ST880), the audio / video equipment 4 _i
Requests deletion of the playback entry (edit data; VFL),
VF including the file name of the edit result data that requests deletion
The L_DELETE command is output to the input / output control device 38 _i . The input / output control device 38 _i uses this VFL_
Receive a DELETE command. Step 882 (S
In T882), the input / output control device 38 _i outputs the received VFL_DELETE command to the data management device 34.

At step 884 (ST884),
The data management device 34 deletes the file entry and the reproduction entry of the edited result data. Step 886 (S
In T886), the data management device 34 decrements the value of the deletable flag of the reproduction entry by 1. Step 888
In (ST888), the data management device 34 deletes the edited data.

As described above, according to the audio / video data recording / reproducing apparatus 3 shown in the fifth embodiment, audio / video data having the same contents as the edited result data can be obtained by combining partial data of any length. Also, when playing, the continuity of the played audio / video data is not impaired.
Moreover, in order to realize the audio / video data recording / reproducing apparatus 3 shown in the fifth embodiment, in order to realize the audio / video data recording / reproducing apparatus 3 shown in the fifth and fourth embodiments, It suffices to change the storage contents of the ROM 382 of the input / output control device 38 _{i and} the ROM 342 of the data management device 34, and no hardware change is necessary. In addition,
The audio / video data recording / reproducing apparatus 3 shown in the fifth embodiment is similar to the audio / video data recording / reproducing apparatus 3 shown in the third and fourth embodiments. It can be modified in various ways.

Sixth Embodiment Hereinafter, a sixth embodiment of the present invention will be described. In the fifth embodiment, the case where the input / output control device 38 _i generates a reproduction entry has been described, but in the sixth embodiment, the data management device 34 generates a reproduction entry and performs compilation processing. The processing of will be described. The contents of the processing other than the reproduction entry generation and compilation processing of the reproduction entries of the input / output control device 38 _i and the data management device 34 are the same as in the fifth embodiment.

FIG. 28 is a block diagram showing the voice / voice data in the sixth embodiment.
6 is a flowchart showing the contents of a compilation process performed by the data management device 34 of the video data recording / playback device 3.
FIG. 29 shows the audio / video device 4 _i and the input / output control device 38 _i when the data management device 34 of the audio / video data recording / reproducing device 3 performs the compiling process in the sixth embodiment.
FIG. 6 is a signal sequence diagram showing a signal sequence between the data management device 34 and the data management device 34. FIG. 30 is a flowchart showing in more detail the contents of the compiling process performed by the data management device 34 of the audio / video data recording / reproducing device 3 in the sixth embodiment.

As shown in FIGS. 28 and 29, the step
Audio / video device 4 in step 702 (ST702)._i
Includes edit data, and the edit data is sent to the input / output control device 3
8_iCommand to receive (VFL_DOWNLOAD frame
Input / output controller 38 _iOutput to Entering and leaving
Force control device 38_iIs this VFL_DOWNLOAD
Receive the command. In Step 704 (ST704)
I / O controller 38_iReceived VFL_DO
Issue the WNLOAD command to the data management device 34.
Power.

In step 706 (ST706) and step 708 (ST708), the data management device 3
Reference numeral 4 retrieves a file entry (FE) and a record entry (RE) of the material data including the partial data included in the edited result data, based on the edited data, and generates a reproduction entry (FIG. 14C). Further, the data management device 34
Increments the deletable flag of the record entry found as a result of the search and sets the value of the deletable flag to OF.
Change to F.

At step 710 (ST710),
The input / output control device 38 _i analyzes the reproduction entry sent from the data management device 34 and searches for partial data having a short data length and incapable of continuous reproduction. Step 712
In (ST712), the input / output control device 38 _i determines the necessity of compilation processing. Input / output control device 38
The contents of the processing relating to the determination of the necessity of the compilation processing by _i are as shown in FIG. Only when the compiling process is necessary, the process proceeds to ST714. Note that S
The processing content of T750 is S shown in FIGS.
This is the same as the processing content of T450.

At step 714 (ST714),
The data management device 34 secures a recording area (compilation recording area) required for the compilation processing. Step 7
16 (ST716), the data management device 34
Compile processing (FIG. 17) is performed. Details of the contents of the compile process by the input / output control device 38 _i are shown in FIG.
As shown in FIG.

In the flow chart shown in FIG. 30, the data b (k), s in the reproduction entry R (k) is recorded.
(J) is defined as shown in FIG. 22, and variables Z and s
(K) is defined as shown in FIG. That is, as shown in FIG. 23 (A), the variable Z in ST854 in FIG. 30 is set to the data of the data length T or more in addition to the short data (FIG. 17 (B)). Indicates the data length of the data removed from the immediately preceding partial data. Also, the numerical value s in ST832 in FIG.
As shown in FIG. 23B, since (k) -TX is data having a data length T or more in addition to the short partial data (FIG. 20 (B)), it is immediately after the short partial data. Indicates the data length of the data removed from the partial data.

As described above, when the data management device 34 generates and compiles the reproduction entry, the amount of data transmitted and received on the main CPU bus 32 is small, and the possibility of causing a bus neck is reduced. To do. Since the reproduction entry generation and compilation processing shown in the fifth and sixth embodiments can realize the same function, the configuration of the audio / video data recording / reproducing apparatus 3 (connected. It is possible to select one that can optimize the performance of the audio / video data recording / reproducing apparatus 3 according to the number of the audio / video devices 4 _i ).

[0154]

As described above, according to the audio / video data recording / reproducing apparatus of the present invention, a hard disk and a magneto-optical disk (MO disk; Magnetic-Optic).
Recording multiple audio / video data to be edited on a randomly accessible recording medium (e.g. al Disc) and reproducing and providing arbitrary audio / video data in response to a request from an external device such as an editing device. You can

Also, the audio / video data recording / reproducing apparatus according to the present invention is suitable for editing audio / video data for a long time. Further, according to the audio / video data recording / reproducing apparatus of the present invention, the audio / video data of the editing result (editing result data) can be recorded without overlapping recording of the audio / video data of the same content on the recording medium. It is possible to reproduce audio / video data having exactly the same content.

Further, according to the audio / video data recording / reproducing apparatus of the present invention, the recording area (occupied recording area) occupied by the audio / video data and the empty recording area are managed, and the external audio / video equipment is used. Processing required for audio / video data recording / reproducing apparatus, such as processing related to input / output control signals input from the device and protocol control related to input / output of audio / video data to / from audio / video equipment Load can be distributed over separate components.

Further, according to the audio / video data recording / reproducing apparatus of the present invention, it is possible to prevent the processing load from being concentrated on a specific component part, and to perform audio / video communication with more external audio / video equipment. Video data can be input and output at high speed. Further, in the audio / video data recording / reproducing apparatus according to the present invention, a bus for transmitting / receiving audio / video data,
A bus that transmits and receives other control data is separated, and a bus neck is unlikely to occur.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an audio / video data processing system according to the present invention.

FIG. 2 is a diagram showing a configuration of the audio / video data recording / reproducing apparatus shown in FIG.

FIG. 3 is a diagram showing a configuration of an audio / video data recording / reproducing apparatus according to the present invention in a second embodiment.

FIG. 4 is a diagram showing a configuration of a data management device shown in FIG.

5A to 5D are occupied recording areas of audio / video data A and B recorded in the recording area of the recording medium of the recording / reproducing apparatus shown in FIG. 3, and are generated by the data management apparatus. 3 is a diagram exemplifying occupied recording area data and empty recording area data of audio / video data A and B. FIG.

6A to 6C are diagrams illustrating the contents of recording area data generated by the data management apparatus shown in FIG.

FIG. 7 is a diagram showing a configuration of each of the input / output control device shown in FIG.

8 is a block diagram showing an audio / video data recording / reproducing apparatus according to a second embodiment of the present invention. FIG. 8 shows the input audio / video data reproduced from the recording / reproducing apparatus shown in FIG. It is a flow chart which shows processing when supplying to a video equipment.

9 is a diagram showing a case where the audio / video data recording / reproducing apparatus supplies the input audio / video data reproduced from the recording / reproducing apparatus shown in FIG. 3 to the audio / video equipment shown in FIG. FIG. 3 is a signal sequence diagram among audio / video equipment, an input / output control device, a data management device, and a recording / reproducing device.

10 is a block diagram showing an audio / video data recording / reproducing apparatus according to a second embodiment of the present invention. The audio / video data input from the audio / video device shown in FIG. It is a flow chart which shows processing when recording.

11 is a block diagram showing an audio / video data recording / reproducing apparatus according to a second embodiment of the present invention. FIG. 11 shows audio / video data input from the audio / video device shown in FIG. FIG. 9 is a signal sequence diagram among the audio / video device, the input / output control device, the data management device, and the recording / reproducing device when recording.

FIG. 12 (A) is a diagram showing the voice / voice in the third embodiment.
The video data A to D show the occupied recording area occupied in the recording medium of the recording / reproducing apparatus shown in FIG. 3, and (B) shows
It is a figure which illustrates the edit result data obtained as a result of the cut edit process of a part of audio / video data A-D.

FIG. 13 is a diagram illustrating a third embodiment of the audio / video device shown in FIG. 1 for reproducing audio / video data having the same content as the editing result data shown in FIG.
It is a figure which shows the content of the edit data output with respect to the input / output control apparatus of a video-data recording / reproducing apparatus.

14A to 14C are file entries and record entries of the audio / video data (material data) AB shown in FIG. 12A in the fourth embodiment; FIG. 8 is a diagram exemplifying the edit data used for reproducing the edit result data shown in FIG. 4) and the reproduction entry generated by the process of the data management device.

FIG. 15 is a flowchart showing a process in which the data management device shown in FIG. 3 creates a reproduction entry.

FIGS. 16A to 16C are diagrams showing edit data, a file entry, and a record entry related to a reproduction entry generation process, and a reproduction entry obtained as a result of the reproduction entry generation process.

17A to 17D are diagrams showing operations of the input / output control device and the data management device (FIG. 3) of the audio / video data recording / reproducing device in the fifth embodiment.

FIG. 18 is a flowchart showing the contents of a compile process performed by the input / output control device of the audio / video data recording / reproducing device in the fifth embodiment.

FIG. 19 shows a signal sequence between an audio / video device, an input / output control device and a data management device when an input / output control device of an audio / video data recording / reproducing device performs a compile process in the fifth embodiment. It is a signal sequence diagram.

20 is a flowchart showing the processing contents of ST450 shown in FIG.

FIG. 21 is a flowchart showing in more detail the contents of a compile process performed by the input / output control device of the audio / video data recording / playback device in the fifth embodiment.

22 is a diagram showing definitions of data b (k) and s (j) in the reproduction entry R (k) in the flowchart shown in FIG. 21.

23 is a diagram defining variables Z, s (k) in the flowchart shown in FIG. 21. FIG.

FIG. 24 is a flowchart showing the processing of the input / output control device and the data management device when the audio / video device shown in FIG. 1 requests the audio / video data recording / reproducing device to delete the audio / video data. Is.

25 is an audio / video device, an input / output control device, and a data management device when the audio / video device shown in FIG. 1 requests the audio / video data recording / reproducing device to delete the audio / video data. It is a signal sequence diagram which shows the signal transmitted / received between.

FIG. 26 shows the processing of the input / output control device and the data management device when the audio / video device shown in FIG. 1 requests the audio / video data recording / reproducing device to delete a reproduction entry (edit data). It is a flowchart shown.

[Fig. 27] An audio / video device, an input / output control device, and data when the audio / video device shown in Fig. 1 requests the audio / video data recording / reproducing device to delete a reproduction entry (edit data). It is a signal sequence diagram which shows the signal transmitted / received between the management apparatuses.

FIG. 28 is a flowchart showing the contents of a compilation process performed by the data management device of the audio / video data recording / reproducing device in the sixth embodiment.

FIG. 29 is a signal between the audio / video device, the input / output control device, and the data management device when the data management device of the audio / video data recording / reproducing device in the sixth embodiment performs a compile process. It is a signal sequence diagram which shows a sequence.

FIG. 30 is a flowchart showing in further detail the contents of a compile process performed by the data management device of the audio / video data recording / reproducing device in the sixth embodiment.

FIG. 31 is a diagram showing a configuration example of a conventional audio / video data recording / reproducing apparatus.

[Explanation of symbols]

1 ... audio and video data processing system, 2,3 ... audio and video data recording and reproducing apparatus, 4 _i, 4 ₁ to 4 _n ... audio and video equipment, 20 ... controller, 200 ... microprocessor, 202 ... ROM, 204 ... RAM, 210, 210
_{1 to} 210 _n ... Control data IF, 206 ... Bus bridge circuit, 218 ... CPU bus, 22 ... Input / output device, 224
_{1 ~224 n} ... input and output control circuit, 220, 220 _1-2
20 _i ... audio and video data IF, 222,222 ₁ ~2
22 _n ... Buffer memory, 226 ... Sub bus, 34 ... Data management device, 340 ... Microprocessor, 342 ...
ROM, 346 ... CPU bus, 348 ... SCSIIF,
36 ... management data recording _{apparatus, 38 i, 38 1 ~38 n} ...
Input / output control device, 380 ... Microprocessor, 382
... ROM, 384 ... RAM, 388 ... Local CPU bus, 390 ... Dual port RAM, 392 ... Recording / reproducing apparatus IF, 394 ... Address generating circuit, 24 ... Recording
Playback device, 30 ... Data bus

Claims (4)

[Claims] 1. An audio / voice recorder comprising a data recording / playback device and a recording / playback control device for controlling the data recording / playback device to record audio / video data and playing back the recorded audio / video data. A video data recording / reproducing apparatus, wherein the data recording / reproducing apparatus includes recording / reproducing means for recording and reproducing audio / video data in a designated recording area of a randomly accessible recording medium, A first occupied recording area occupied by the recorded audio / video data in the recording medium and a free recording area of the recording medium, and a first recording area managing means for managing the recording / reproduction control device. A second exclusive management area for managing a second occupied recording area occupied by a part or all of the recorded audio / video data as partial data to be reproduced in combination Recording area managing means, and the recording area managing means are respectively connected to the recording area managing means by a bus via a first bus, and the first occupied recording area, the second occupied recording area and the recording area managing means are connected via the first bus. A plurality of input / output control means for receiving an empty recording area, each of which is bus-connected to the recording / reproducing means via a second bus, and for inputting / outputting audio / video data via the second bus. Each of the plurality of input / output control means has a first occupation of audio / video data requested to be recorded by the recording / reproduction control means, based on the empty recording area received from the first recording area management means. The recording area
Recording control means for designating and recording to the reproducing means, and recording / reproducing means for the first occupied recording area and the second occupied recording area of audio / video data requested to be reproduced by the recording / reproducing control means. An audio / video data recording / reproducing device having a reproduction control means for specifying and reproducing. 2. The first recording area management means generates a first occupied recording area list in a linked list format in which the first occupied recording areas of recorded audio / video data are associated with each other. An exclusive recording area list generating means, and an identification flag which takes a first value when the audio / video data corresponding to the first exclusive recording area list can be deleted is added to the first exclusive recording area list. The second recording area, and an identification flag adding means of No. 1 and an empty recording area list generating means for generating an empty recording area list in a linked list format in which the empty recording areas of the recording / reproducing means are associated with each other. The management means generates a second exclusive recording area list in a linked list format in which the second exclusive recording areas of the partial data to be reproduced in combination are associated with each other. And a second area recording means for adding an identification flag having a first value when the audio / video data corresponding to the second occupied recording area list can be deleted. The audio / video data recording / reproducing apparatus according to claim 1, further comprising an identification flag adding means. 3. When the request for releasing the first occupied recording area and the second occupied recording area is received, only when the value of the identification flag is the first value, the corresponding A recording area releasing means for releasing the recording area of the recording medium and deleting the first occupied recording area and the second occupied recording area list, and a linked list in which the empty recording areas of the recording / reproducing means are associated with each other. The audio / video data recording / reproducing apparatus according to claim 2, further comprising a free recording area list generating means for generating a free recording area list of a format. 4. When the partial data has a predetermined data length or less, short partial data having a predetermined data length or less and a predetermined portion of the partial data reproduced before and after the short partial data are generated. Partial data recording means for continuously recording in a predetermined recording area of the recording medium, the partial data based on the first occupied recording area,
And a third recording area which is occupied by the predetermined portion and the short portion data of the unit data recorded in the predetermined recording area of the recording medium in the recording medium.
A third recording area managing unit for managing an exclusive recording area of the audio / video data, the reproduction controlling unit requesting reproduction by the recording / reproducing control device.
4. The audio / video data recording / reproducing apparatus according to claim 3, wherein the second exclusive recording area and the third exclusive recording area are designated and recorded by the recording / reproducing means.