JP3277784B2 - Audio / video data recording / reproducing device - Google Patents

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 several tens to several hundreds of gigabytes (GB).
Hard disk array devices that can be randomly accessed have been put to practical use. This hard disk array device is suitable for recording data having a very large data amount such as audio data and video data or any one of them (audio / video data). It is excellent as a recording / reproducing device for an editing device because of its characteristic that it can be reproduced on a computer.

However, if the edited audio / video data is recorded again on the hard disk array on which the audio / video data (material data) to be edited is recorded, the same audio / video data is duplicated. Recording is performed, the recording capacity of the hard disk array is wasted, and there is a possibility that the audio / video data cannot be edited for a long time.

Further, a conventional technique will be described. FIG.
Is a configuration example of a conventional audio / video data recording / reproducing device 8
FIG. Conventional audio / video data recording / playback equipment
The device 8 is, for example, as shown in FIG.
Ray device or magneto-optical disk (MO; Magnetic Opt
ical Disc) Recording media that can be accessed randomly, such as devices
Record and play audio and video data on body (not shown)
Using the recording / reproducing device 24 and the RAM 204
Execute the control program stored in M202
Microprocessor (CPU), control signal interface
Base circuit (control data IF) 210₁~ 210_n(Figure
31, n = 3), and video and audio signals, respectively.
Signal 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.

[0005] In the audio / video data recording / reproducing device 8, the microprocessor 200 comprises a recording / reproducing device 24.
Manages a recording area (occupied recording area) and an empty recording area occupied by the audio / video data (audio data and / or video data) recorded in the recording medium. Occupied recording area data and vacant recording area data respectively indicating the occupied recording area and the vacant recording area (these are collectively referred to simply as recording area data)
Is stored in the RAM 204 and further recorded in a predetermined recording area of a recording medium of the recording / reproducing device 24.

[0006] At the time of recording, the microprocessor 200 receives input from a plurality of audio / video devices such as an editing device, a video tape recorder (VTR device) or a transmission device via control data IFs 210 _{1 to} 210 _n. The recording / reproducing device 24 and the input / output control circuits 224 _{1 to} 224 _n are controlled based on the output control signal, and audio / video data 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.

At the time of reproduction, the microprocessor 200 controls the control data IF2 from each of the audio / video equipment.
10 _1-210 through _n, based on the output control signal inputted recording and reproducing apparatus 24 and the output control circuit 22
4 ₁ controls to 224 _n, reproduced from the recording and reproducing apparatus 24 to the audio and video data requested by the audio and video equipment, and supplies the audio and video equipment through the input-output control circuit 224 ₁ to 224 _n.

However, in the audio / video data recording / reproducing device 8 shown in FIG.
4, audio / video data recorded / reproduced, control signals input from audio / video equipment via control data IFs 210 _{1 to} 210 _n , occupied recording area data and free recording area data, Same CPU bus 218
Are transmitted and received between the respective components via the CPU bus 218, so that a bus neck occurs in the CPU bus 218.

[0009] Further, the microprocessor 200 outputs
.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 such as input / output control signals,
Control data IF 210₁~ 210_nAnd I / O control times
Road 224₁~ 224_nCan't increase the number of
No. Also, the recording area data and audio / video data
Since recording is performed by one recording / reproducing device 24, recording / reproducing is performed.
The load on the device 24 itself also increases.

[0010] An 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 is recorded on a randomly accessible recording medium such as a disc (Magnetic-Optical Disc), and arbitrary 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 provided by using the above.

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

The present invention also relates to management of a recording area (occupied recording area) and an empty recording area occupied by audio / video data in a recording medium, processing relating to an input / output control signal input from an external audio / video apparatus, In addition, the processing load required for audio / video data recording / reproducing devices, such as protocol control for input / output of audio / video data between audio / video devices, has been distributed to separate components. An object of the present invention is to provide an audio / video data recording / reproducing device.

Further, the present invention prevents a processing load from being concentrated on a specific component, and enables audio / video data to be input / output to / from more external audio / video devices at high speed. -To provide a video data recording / reproducing device. Another object of the present invention is to provide an audio / video data recording / reproducing apparatus in which a bus for transmitting / receiving audio / video data and a bus for transmitting / receiving other control data are separated, and a bus neck is less likely to occur. .

[0014]

According to the present invention, material data including video data and / or audio data is recorded on a randomly accessible recording medium, and the material data is reproduced from the recording medium. Recording / reproducing means, first occupied recording area occupied by the recorded material data in the recording medium, first recording area management means for managing a free area of the recording medium, and a part of the material data or A second recording area management unit that manages a second occupied recording area occupied by a part or the whole of the material data as the partial data in the recording medium when all of them are combined and reproduced as partial data; A bus connected to the recording area management means via a first bus, and the first occupied recording area via the first bus;
A plurality of input / output units which receive the second occupied recording area and the empty recording area, are respectively connected to the recording / reproducing means via a second bus, and input / output material data via the second bus. Output control means, wherein each of the plurality of input / output control means specifies a recording area in which the material data is to be recorded to the recording / reproducing means based on the empty recording area when a request for recording material data is made. Recording means for recording, and reproduction control means for designating the first and second occupied recording areas to the recording / reproduction means and reproducing when material data reproduction is requested. A data recording / reproducing device is provided.

[0015] Preferably, the first recording area management means generates a first occupation recording area list in a linked list format in which the first occupation recording area of the recorded material data is associated. Recording area list generation means;
If the material data corresponding to the first occupied recording area list can be deleted, the identification flag that takes a first value is set to the first value.
First identification flag adding means for adding to the occupied recording area list, and free recording area list generating means for generating a free recording area list in a linked list format associated with the free recording area of the recording medium , The second recording area management means generates a second occupation recording area list in a linked list format in which the second occupation recording areas of the partial data to be combined and reproduced are associated with each other . Means for adding an identification flag that takes a first value to the second occupation recording area list when the material data corresponding to the second occupation recording area list can be deleted; Having.

Preferably, when the deletion of the material data is requested, only when the value of the identification flag of the second occupied recording area list corresponding to the material data is the first value, The recording area releasing means for releasing the recording area of the recording medium and deleting the corresponding first occupied recording area list and the second occupied recording area list, and associating the empty recording area of the recording and reproducing means with each other. A free recording area list generating means for generating a free recording area in a linked list format.

More preferably, when the partial data is shorter than a predetermined data length, a short partial data shorter than the predetermined data length and a predetermined part of the partial data reproduced before and after the short partial data are provided. And a partial data recording unit that continuously records the data in the predetermined recording area of the recording medium, and the partial data and the partial data that are recorded in the predetermined recording area of the recording medium based on the first occupied recording area. And a third recording area management means for managing a third occupied recording area indicating a recording area occupied by the predetermined part of the partial data and the short partial data in the recording medium. When the reproduction of the material data is requested, the first occupied recording area of the requested material data;
The second occupied recording area and the third occupied recording area are designated by the recording / reproducing means and reproduced.

The audio / video data recording / reproducing device 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) a data recording / reproducing device suitable for recording audio / video data (audio data and / or video data) on a randomly accessible recording medium (hard disk or MO disk) including a device;
A recording / playback control device that controls the data recording / playback means, such as an audio / video data editing device, a transmission device, or a video tape recorder, to record audio / video data and play back the recorded audio / video data; In response to a request from the recording / reproduction control device, the data recording / reproduction device records the audio / video data supplied from the recording / reproduction control device on a recording medium, and reproduces the recorded audio / video data. Supply to recording / reproduction control device.

In the above data recording / reproducing apparatus, the recording / reproducing means records 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 a first occupied recording area occupied by the audio / video data recorded on the recording medium in the recording medium and a free recording area of the recording medium. For example, the first
And a first occupied recording area list and a vacant recording area list in the form of a linked list are generated and managed.

For example, when the recording / reproduction control means is an editing device, the second recording area management means edits the audio / video data supplied from the data recording / reproduction device, and executes the editing processing. The same audio / video data as the audio / video data (edit result data) obtained as a result of
A linked list is a second occupied recording area occupied by the partial data in the recording medium, which is necessary for combining and reproducing part or all (partial data) of each of the audio and video data recorded on the recording medium. A second occupation recording area list in a format 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 a first bus, and the first occupied recording area and the second Receiving the occupied recording area and the empty recording area, and being connected to the recording / reproducing means via a second bus, respectively, and inputting / outputting audio / video data via the second bus.
This prevents data relating to the recording area from colliding with audio / video data 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 device supplies the audio / video data to the data recording / reproduction device and requests the recording. Calculate a recording area for recording audio / video data requested to be recorded from the free recording area and record / reproduce the calculated recording area (hard disk array, etc.)
And record it.

When the recording / reproduction control device designates already recorded audio / video data to the data recording / reproduction device and requests the data recording / reproduction device to reproduce the data, for example, the reproduction of the audio / video data requested to be reproduced is performed. If the video data is material data to be used as a material for editing processing, 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 editing result data, the second occupied recording area of the partial data used for reproducing the same audio / video data as the editing result data is set. Designate the recording / reproduction means and reproduce.

[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 configuration 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, whose buses are connected by a bus bridge circuit 206, and a recording / reproducing device 24.

The control device 20 includes a microprocessor 20
0, a ROM 202, a RAM 204, and n pieces of control data IFs 210 _{1 to} 210 _n (FIG. 2 exemplifies a case where n = 3) are mutually connected via a CPU bus 218. The input / output device 22 includes n input / output control circuits 2
24 _{1 to} 224 _n and an input / output control circuit 224
_{1 to} 224 _n are 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, and the requested audio / video data is reproduced, and the reproduced audio / video data is reproduced. To receive. Each audio and video equipment 4 ₁ to 4 _n, at the time of recording, and outputs the output control signal requesting recording on control data IF 210 ₁ to 210 _n of the audio-video data recording and reproducing apparatus 2, requests the recording Input / output control circuits 224 _1-
224 _n for recording by 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) microprocessor and its peripheral circuits. Execute the stored program.

The microprocessor 200 stores the recorded audio and video data in the recording medium (M
O disk or hard disk, etc .; occupied recording area data indicating the occupied recording area by managing a recording area (occupied recording area) occupied in an unrecorded area and an empty recording area;
The free recording area data indicating the free recording area is stored in RA
The data is recorded in 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 to perform operations 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. And the recording area of audio / video data for the user.

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

In the input / output device 22, each of the input / output control circuits 224 _{1 to} 224 _n operates according to the control of the microprocessor 200 of the control device 20.
A predetermined protocol (for example, SCSI; Small Computer S)
according to ystem Interface), audio and video equipment 4 ₁ to 4
_n from the sub-bus 226
To the recording / reproducing device 24 via the PC, and record it in a designated recording area of the recording medium of the recording / reproducing device 24. Further, at the time of reproduction, 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, and
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 , the audio / video data IFs 220 _{1 to} 220 _n are reproduced by the recording / reproducing device 24 at the time of reproduction.
Sub bus 226 and buffer memories 222 _{1 to} 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 It is output to the device 24 and recorded.

At the time of reproduction, each of the buffer memories 222 _{1 to} 222 _n buffers audio / video data input from the sub-bus 226 and
F220 _{1 to} 220 _n , and at the time of recording, audio / video data input from the audio / video data IF 220 _{1 to} 220 _n are buffered and
To the recording / reproducing device 24 via the.

The recording / reproducing device 24 is a hard disk array device or a magneto-optical disk (MO; Magnetic Opt
ical Disc) device and the like,
0 to a recording medium (not shown) that can operate at random and operate according to the control of the input / output control circuits 224 ₁ to 224 ₁ .
224 _n via the sub-bus 226
The video data is recorded in a recording area designated by the microprocessor 200. 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 device 2
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 / reproducing device 2
The following describes an example where recording and playback are requested.
Equipment 4 _Two~ 4_nBecomes the audio / video data recording / reproducing device 2
For recording and playback of audio and 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,
And it outputs the control data IF 210 ₁ of the control unit 20 of the audio-video data recording and reproducing apparatus 2 is connected.

The control data IF 210 _1, the microprocessor 20 output control signals from the audio and video equipment 4 ₁
Output for 0. The microprocessor 200 records the input audio / video data based on the free 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 for recording a recording area
To be specified.

Further, the microprocessor 200 controls the input / output control circuit 224 ₁ to accept audio / video data input according to a predetermined protocol, and stores the audio / video data in the designated recording area of the recording medium of the recording / reproducing apparatus 24. Record.
Further, the microprocessor 200 includes the audio / video equipment 4
Using the file name or the like input from ₁ to generate a file entry used for searching audio / video data and occupied recording area data of the recorded audio / video data, and update the empty recording area data.

Next, the operation of the audio / video data processing system 1 during reproduction will be described. Audio and video equipment 4 ₁ outputs the output control signal including the file name or the like of the audio and video data for requesting playback to the control data IF 210 _1. The control data IF 210 ₁ outputs the 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. The recording / reproducing device 24 designates a recording area in which the audio / video data requested to be reproduced is recorded, and controls the recording / reproducing device 24 to reproduce the audio / video data from the designated recording region. Further, the microprocessor 20
0 controls the input / output control circuit 224 ₁ and converts the audio / video data reproduced by a predetermined protocol into 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 shown in the first embodiment (FIG. 1)
2 and FIG. 2), since the CPU bus 218 and the sub-bus 226 are separated from each other, data relating to recording area data generation and audio / video data do not exist on the same bus. Does not occur.
However, audio / video data and audio / video equipment 4
_The data related to the protocol control between ₁ to 4 _n and the control data IFs 210 _{1 to} 210 _n are mixed on the sub bus 226, and there is a possibility that a bus neck may occur in the sub bus 226.

The audio / video data recording / reproducing device 2
All the processing burden of each component of the microprocessor 2
00, the audio / video data recording / reproducing device 2 (FIGS. 1 and 2) also controls the control data in the audio / video data recording / reproducing device 2 (FIGS. 1 and 2), similarly to the audio / video data recording / reproducing device 8 (FIG. 31) shown as a conventional technique. The number of IFs 210 _{1 to} 210 _n and input / output control circuits 224 _{1 to} 224 _n cannot be significantly increased.

The audio / video data recording / reproducing apparatus 3 described in the second embodiment is the same as the audio / video data recording / reproducing apparatus shown in the first embodiment.
The video data recording / reproducing apparatus 2 is further improved so that audio / video data and other data such as protocol control data are hardly mixed on the same bus. . In addition, the audio / video data recording / reproducing device 3 does not concentrate loads on processes such as protocol control and recording area management on a specific microprocessor (data processing means), and reduces the number of connectable audio / video devices. It is configured so that it can be greatly increased.

FIG. 3 is a diagram showing the configuration of the audio / video data recording / reproducing apparatus 3 according to the second embodiment of the present invention. However, FIG. 3 illustrates the audio / video data recording / reproducing device 3 when n = 4. In each of the drawings following FIG. 3, the same components as those shown in FIGS. 1 and 2 are denoted 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 instead of the audio / video data recording / reproducing device 2 (FIGS. 1 and 2). Input / output control devices 38 _{1 to} 3
8 _n is bus-connected via a main CPU bus 32 to a data management device 34 having a management data recording device 36,
Further, the recording / reproducing device 24 is connected to the recording / reproducing device 24 via a 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 and video equipment 4 ₁ to 4 _n records the audio and video data input from each of the sound-
The audio / video data recorded in response to a request from each of the video / video devices 4 ₁ to 4 _n is reproduced, and the audio / video devices 4 ₁ to 4 _n are reproduced.
_n each supply.

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, an R
The OM 342, the RAM 344, and the SCSI interface (SCSIIF) 348 are connected to the main CPU bus 32.
Are connected via a bus, and the SCSIIF 348
Is connected to a management data recording device 36 such as a hard disk device.

In the data management device 34, the microprocessor 340, the ROM 342, and the RAM 344
The computer operates as a computer that executes a program stored in the ROM 342, manages a recording area of a recording medium of the recording / reproducing apparatus 24, generates an occupied recording area and an empty recording area of the recording / reproducing apparatus 24, and stores the generated area in the RAM 344. Then, it is recorded in the management data recording device 36. The data management device 34 includes input / output control devices 38 ₁ to 38 3.
_8n audio for recording, as requested by each
Allocates a recording region in the audio and video data input from the video apparatus 4 ₁ to 4 _n, and notifies the occupied recording region output control unit 38 ₁ to 38 DEG _n respective audio and video data requested to be reproduced.

FIG. 5 shows the recording / reproducing device 24 shown in FIG.
Occupied recording area of the audio / video data A and B recorded in the recording area of the recording medium, and occupied recording area data of the audio / video data A and B generated by the data management device 34 (file entry and encode entry) FIG. 4 is a diagram illustrating free recording area data (free space list). FIG. 6 is a diagram exemplifying the contents of the 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 bytes 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 recording area of the 80th block or later of the recording medium is the largest. And the entire 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 earlier part of the audio / video data B is recorded, and the latter part is recorded after 230 blocks.

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

Further, the data management device 34 has a RAM 3
An identification flag (deletion enable 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.
Note that, among the values of the deletion enable flag, ON indicates that deletion is possible, and OFF indicates that deletion is impossible. Thus, the reason for adding a deleteable flag to a record entry is, for example,
When a part of the audio / video data recorded in the recording / reproducing device 24 is referenced by another record entry, the referenced audio / video data is not deleted unnecessarily. To do that.

Each record entry is shown in FIG.
As shown in (1), it is composed of link data indicating the next record entry, head position data indicating the head position of the recording area, and recording length data indicating the length of the recording area. When the link data is the end value (END), the next record entry does not exist, and the last area of the audio / video data is recorded in the recording area indicated by the record entry.

The data management device 34 is provided with an empty recording area (free space) of the hard disk array device 24.
Is generated as a list (free space list) in the form of a linked list, as shown in FIG. 5D. As shown in FIG. 6C, the free space list includes link data of the next free recording area, head position data indicating the start position of the free recording area, and recording length data indicating the length of the free recording area. Be 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 data recorded in the management data recording device 36 from the management data recording device 36, and reproduces the above-described 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 device 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 IFs 210 _{1 to} 210 _n).
(Same as FIG. 2) and an address generation circuit 394 are connected via a closed local CPU bus 388 in the input / output control device 38 _i , and the dual port RAM 3
90 is a main CPU bus 32 (FIG. 3) and a local CPU
A bus 388 is connected, and a recording / reproducing device control interface (recording / reproducing device IF) 392 connects the local CPU bus 388 to the data bus 30 and the data bus 30
Buffer memory 222 (buffer memories 222 ₁ to 2
22 corresponding to _n) and the audio and video data IF220
(Same as the audio / video data IFs 220 _{1 to} 220 _n ). Input / output controller 38 ₁ -3
The audio / video equipment 4 _i (FIG. 1) is connected to each of the 8 _n audio / video data IFs 220.

With these components, the input / output control device 38 _i accesses the data management device 34 during recording according to an input / output control signal including data such as a file name and data length from the audio / video device 4 _i. Then, the recording / reproducing apparatus 24 receives a recording area for recording the audio / video data requested to be recorded, and designates the allocated recording area to the recording / reproducing apparatus 24. The audio / video data input according to the predetermined protocol is recorded.

At the time of reproduction, the input / output control device 38 _i accesses the data management device 34 in accordance with an input / output control signal including data such as a file name from the audio / video device 4 _i and is requested to reproduce. Receive notification of the occupied recording area for audio / video data, and
The video data is reproduced, and the reproduced audio / video data is output to the audio / video device _{4i 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 ROM382, controls each component of the output control device 38 _i,
Recording of audio / video data to the recording / reproducing device 24
Playback and protocol control with the audio / video equipment 4 _i are executed.

The dual port RAM 390 has a main C
The data input from the data management device 34 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 transmitted via the main CPU bus 32 to the data. It is supplied to the management device 34. The recording / reproducing device IF 392 supplies data output from the microprocessor 380 to the recording / reproducing device 24 to the recording / reproducing device 24, and transmits data output from the recording / reproducing device 24 to the microprocessor 380. Supply to 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.

[0062] audio and video equipment 4 _i will be described below the operation of the output control device 38 _i when requesting reproduction of the audio and video data to audio and video data recording and reproducing apparatus 3. The audio / video device 4 _i includes, for the control data IF 210 of the input / output control device 38 _i , a file name of audio / video data requested to be reproduced and the like, and an input / output control signal requested to reproduce audio / video data. Is output. This input / output control signal is transmitted from the control data IF 210 to the microprocessor 380.
The microprocessor 380 inquires of the data management device 34 via the dual port RAM 390 about the occupied recording area of the audio / video data requested to be reproduced. The data management device 34 searches the file entries (FIGS. 5B and 5C) using the file name of the queried audio / video data, finds the corresponding record entry, and finds the input / output control device 38 _i. Notify.

When notified of the record entry, the microprocessor 380 sets the data bus 30 and the recording /
The recording / reproducing device 24 specifies the occupied recording area of the audio / video data to be reproduced via the reproducing device IF 392 and reproduces the data. 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 includes the address generation circuit 3
The buffering operation of the buffer memory 222 is controlled via the buffer 94, the protocol control with the audio / video device 4 _i is performed, and the output is output to the audio / video device 4 _i via the audio / video data IF 220. Let it.

[0064] audio and video equipment 4 _i will be described below the operation of the output control device 38 _i of when requesting the recording of the audio and video data to audio and video data recording and reproducing apparatus 3. The audio / video device 4 _i includes, for the control data IF 210 of the input / output control device 38 _i , the file name and the data length of the audio / video data to be requested to be recorded, and the input / output to request the recording of the audio / video data. Outputs 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 free recording area and the data length of the audio / video data, and notifies the microprocessor 380 via the dual port RAM 390.

The microprocessor 380, which has received the notification of the recording area allocation, specifies the recording area to the recording / reproducing apparatus 24 via the data bus 30 and the recording / reproducing apparatus IF 392. When audio and video data is input to the audio and video data IF220 from the audio-video device 4 _i,
The microprocessor 380 controls the protocol between the audio and video equipment 4 _i. Further, the microprocessor 380 controls the buffering operation of the buffer memory 222 by controlling the address generation circuit 394, and controls the protocol 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 outputs the audio / video data to the recording / reproducing device 24 _i. Make the specified recording.

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

FIG. 8 shows a voice / voice in the second embodiment.
The video data recording / reproducing apparatus 3 supplies the 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. FIG. 9 shows that the audio / video data recording / reproducing device 3 converts the input audio / video data reproduced from the recording / reproducing device 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 FIG. 8 and FIG.
02 (ST102), the audio / video equipment 4 _i
For the audio / video data recording / reproducing device 3, the file name FILE of the audio / video data A (for example, FIG.
_A, and outputs an OPEN_PLAY command for reproducing the audio / video data A recorded in the recording / reproducing device 24. The input / output control device 38 _i
Receive an EN_PLAY command.

In step 104 (ST104),
The input / output control device 38 _i outputs an OPEN_PLAY command to the data management device 34. Step 10
6 (ST106), the data management device 34 reads the file entry (FE) recorded in the management data recording device 36, and searches for a 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 (ST 108), the data management unit 34 outputs a file entry and record entry of the audio and video data A finding against the input-output control unit 38 _i.

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

In step 116 (ST116),
Recording and reproducing apparatus 24 reproduces the audio and video data A from the designated recording regions, and outputs the same to the output control device 38 _i. The input / output control device 38 _i receives the reproduced audio / video data A. Step 118 (ST118)
, The input / output control device 38 _i writes the received audio / video data A into the buffer memory 222.

In 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)
, 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, the audio-video data recording and reproducing apparatus 3 in the audio and video data processing system 1, and records the recording and reproducing apparatus 24 to the audio and video data requested to be reproduced from the audio and video equipment 4 _i The operation will be described. FIG.
In the second embodiment, audio / video data recording /
4 is a flowchart showing processing when the playback device 3 records audio / video data input from the audio / video device 4 _i shown in FIG. 1 in the recording / playback device 24 shown in FIG. 3. FIG. 11 shows that, in the second embodiment, the audio / video data recording / reproducing device 3 converts the audio / video data input from the audio / video device 4 _i shown in FIG. FIG. 4 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 may include relative output control device 38 _i, for causing ready for recording audio and video data B (e.g., FIG. 5 (A)), the file name FILE_B and the data length of the audio and video data B The command is output to the audio / video data recording / reproducing device 3 as an input / output control signal. The input / output control device 38 _i of the audio / video data recording / reproducing device 3 receives this OPEN_REC command.

In step 204 (ST204),
The input / output control device 38 _i transmits an OPEN_WRITE command including the file name FILE_B and the data length, and requesting the data management device 34 to allocate a recording area for recording the audio / video data B. In step 206 (ST 206), the data management unit 34, is input from the input-output control unit 38 _i OPEN
_FILE name included in WRITE command FILE_
B, the file entry (FIG. 5B,
(C)) is generated, stored in the RAM 344, and recorded in the management data recording device 36.

In 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 unit 34 outputs the error code entries and file entries for the input-output control unit 38 _i. In step 212 (ST212), the audio / video equipment 4 _i
Is the audio / video data recording / reproducing device 3
The REC command for starting the recording of the video data is output. The control data IF 210 of the input / output control device 38 _i is
This REC command is received.

In 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 into the buffer memory 222. In step 216 (ST216), the input / output control device 38 _i uses the record area and the file entry received from the data management device 34 to record the audio / video data B in the recording area of the recording medium of the recording / reproducing device 24. Is calculated.

In step 218 (ST218),
The input / output control device 38 _i specifies a recording area for recording the audio / video data B to the recording / reproducing device 24 via the recording / reproducing device IF 392 and inputs a write command to control the recording / reproducing device 24. Then, the audio / video data B stored in the buffer memory 222 is recorded in the designated recording area. In step 220 (ST220),
Recording and reproducing apparatus 24, the audio and video data B input from the input-output control unit 38 _i, is recorded in the designated recording regions of the recording medium.

Next, the audio / video data recording / reproducing device 3
The process by which the data management device 34 updates the free space list will be described. From audio and video equipment 4 _i, including the file name of the audio and video data to be subject to deletion, recording and
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 by using the file name included in the input / output signal, and checks the deleteable flag of the encode entry corresponding to the file name. The data management device 34 deletes the record entry and the file entry only when the deletion enable flag is ON, releases the recording area where 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 no mixture 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 greatly 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. can quickly execute a process relating to the administration, a high response of the recording and playback of audio and video data to audio and video equipment 4 _i.

The audio / video data recording / reproducing device 3
Can be used for recording / reproducing other data, for example, data for a computer, 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 device 3, as long as equivalent functions and performances can be guaranteed, each component may be configured by software or hardware.

Third Embodiment Hereinafter, a third embodiment of the present invention will be described. The audio / video data recording / reproducing device 3 shown in the third embodiment is
Audio / video data recording / reproducing device 3 shown in the embodiment of FIG.
Similarly to the above, 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 the audio / video data recording / reproducing device 3 (the 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 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) targeted for the editing process. The audio / video data (edit result data) obtained as a result of the
4 must be recorded. Therefore, in the third embodiment, data (edit data) indicating which part of the material data is used in the edit result data is received from the audio / video device _4i , and based on the edit data, An audio / video data recording / reproducing device 3 improved to reproduce audio / video data having the same contents as the editing result data will be described.

More specifically, the audio / video data recording / reproducing device 3 in the third embodiment comprises an input / output control device 38
_i , the contents of the ROM 382 are 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 from the audio / video device 4 _i (FIG. 1) as an input / output control signal and the occupied recording area data managed by the data management device 34. by playing a combination of partial (partial data) contained in the editing result data of the data, functions to supply the audio and video data having the same content and the edited result data to the audio and video equipment 4 _i is added .

The contents of the processing in which the input / output control device 38 _i generates audio / video data having the same contents as the above-described edited result data will be described with reference to specific examples. FIG. 12 (A)
In the third embodiment, audio / video data A to D
FIG. 12B shows an occupied recording area in the recording medium of the recording / reproducing apparatus 24 shown in FIG. 3, and FIG. 12B shows an editing process (cut editing) for extracting and connecting a part of the audio / video data A to D. It is a figure which illustrates audio and video data (edit result data) obtained as a result.

FIG. 13 shows a third embodiment of the present invention.
The audio / video equipment 4 _i shown in FIG. 12 reproduces the audio / video data having the same contents as the editing result data shown in FIG. FIG. 11 is a diagram showing the contents of edit data output to _i .

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

The audio / video data A shown in FIG.
To D as material data, the audio / video device 4 _i performs an editing process.
Block to 49 blocks (data length 40 blocks), 20 to 24 blocks from the beginning of audio / video data B (data length 5 blocks), 30 to 69 blocks from the beginning of audio / video data C (data length 40 blocks) Then, partial data of 20 to 24 blocks of audio / video data (data length 5 blocks) is cut and edited to generate editing result data having the contents shown in FIG.

The edited result data is transferred to the recording / reproducing device 2
If the audio / video device 4 is recorded in the audio / video device 4
_i outputs the edit 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, the reproduction start position and the reproduction end position in each material data are recorded. For example,
Edit data for reproducing 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: (audio / video data D) ====================: (1)

The input / output control unit 38 _i generates a file entry and a record entry generated by the data management unit 34 for the edited data and the audio / video data A to C (see FIGS. 5B and 5C). Of the audio / video data A to D included in the edit result data (partial data A to D),
Is calculated as in the following equation. 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 the specified recording area 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)

[0095] By changing the operation of the output control device 38 _i of the audio-video data recording and reproducing apparatus 3 as described above, part of the material data recorded on the recording and reproducing apparatus 24 (partial data) The same audio / video data as the edited result can be reproduced without recording the edited result data composed of the data and the material data in the recording / reproducing device 24 further. Accordingly, in the audio and video data recording and reproducing apparatus 3 shown in the third embodiment, the recording capacity of the recording and reproducing apparatus 24 is not wasted, long audio and video data according to the audio and video equipment 4 _i Can be edited.

The audio / video data recording / reproducing device 3
May be used for only one of the video data and the audio data. Also, 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 as software or hardware. Further, each component of the audio / video data recording / reproducing device 3 can be replaced with another unit having the same function and performance.

Fourth Embodiment Hereinafter, a fourth embodiment of the present invention will be described. According to the recording area management method according to the input-output control unit 38 _i of the audio-video data recording and reproducing apparatus 3 shown in the third embodiment, to achieve the desired effect of effective utilization of the recording capacity of the recording and reproducing apparatus 24 it can be found in the edited data to the output control device 38 _i RAM384 (Figure 7), and recorded in the form as received from the audio-video device 4 _i, the data indicating the recording regions of the partial data at the time of reproduction There is a problem that processing time is required for conversion. Further, until the contents of the edited data are analyzed, it is not known which of the material data recorded in the recording / reproducing device 24 is being used as the material data. May be 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 _i is the file entry and record entry received from the data management device 34 (see FIGS. 5B and 5C and FIGS. 6A and 6B)
A data management device that generates in advance a linked list format reproduction entry indicating a recording area of partial data included in the same edit result data based on the edit data input from the audio / video equipment 4 _i 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 equipment 4 _i requests reproduction of arbitrary editing result data, the input / output control device 38 _i transmits the editing result data to the data management device 34. It requests a playback entry and receives a playback entry from the data management device 34. The input / output control unit 38 _i specifies the recording area indicated by the received reproduction entry to the recording / reproducing apparatus 24, and controls the recording / reproducing apparatus 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 audio / video data having the same content 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
When an identification flag (deletable flag) is added to the record entry and the reproduction entry, and the recording area is deleted,
By checking this deleteable flag, material data is prevented from being accidentally deleted. Incidentally, constituent parts other than the contents of the ROM342 of the 4 ROM382 the output control device 38 _i of the audio-video data recording and reproducing apparatus 3 of the embodiment of and data management unit 34 is the same as the third embodiment is there.

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

As shown in FIG. 14 (A), the data management device 34 transmits 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
342, and further recorded in the management data recording device 36. In this state, in order for the audio / video equipment 4 _i to generate the same audio / video data as the editing result data shown in FIG. 12B, the editing data shown in FIG. outputs to the output control device 38 _i. This editing data is composed 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 from block 24 to block 24, the partial data in the range from block 30 to block 69 of the material data C, and the partial data included in the range from block 20 to block 24 of the material data D are edited in this order. This indicates that the data is included in the result data X.

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

The input / output control unit 38 _{i that} has received the file entry and the record entry of the audio / video data A to D from the data management unit 34, based on the edited data, the received file entry and the record entry, executes the partial data A to D. A reproduction entry in a linked list format (FIG. 14C) indicating the occupied recording area in the recording medium of the recording / reproducing apparatus 24 of D 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 records the reproduction entry in the management data recording device 36. Since the partial data included in the editing result data is the same as that of the third embodiment, the reproduction entry shown in FIG. 14C has the same contents as Table 2 shown in the third embodiment.

When the edit result data X is reproduced, the
The video device 4 _i outputs an input / output control signal for requesting the reproduction of the editing result data X to the input / output control device 38 _i . The input / output control device 38 _i outputs the input input / output control signal to the data management device 34. Data management device 34 outputs the reproduction entry of the edited result data X requested to be played back to the input-output control unit 38 _i. The input / output control device 38 _i specifies 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 from the specified recording region, the partial data A to D Are reproduced in the order indicated by the edit data.

[0106] As shown in the third embodiment, stores the edited data as it is to the output control device 38 _i RAM384, compared to calculate the recording region of the partial data at the time of reproduction, the fourth As shown in the embodiment, FIG.
If the reproduction entry is generated in the linked list format shown in FIG. 4C 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 can be performed quickly. Audio / video data having the same contents as the result data can be reproduced. Moreover, since all of the reproduction entries output control unit 38 ₁ to 38 DEG _n has generated it is collectively managed by the data management device 34, output a reproduction entry either of the input and output control unit 38 ₁ to 38 DEG _n is generated 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 large. Although this does not hinder, the calculation processing time increases as the number of divisions of the partial data increases, and the possibility of hindering reproduction increases. Therefore, when the editing data of the editing result data including a lot of partial data is input from the audio / video equipment 4 _i to the input / output control device 38 _i , the merit of generating the reproduction entry in advance is increased.

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

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

In 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 unit 38 _i is playback end position (END (n)) record entry of the material data existing RE (n, ie) the record entry received from the data management device 34 RE Obtained from (n, i).

In 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 unit 38 _i generates the reproduction entry RE (j). In step 360 (ST360), the input / output control device 3
_8i determines whether or not the reproduction end position exists in the same record entry, that is, whether or not the variable i is a numerical value is. If the variable i is a numerical value is, ST36
If the variable i is not the numerical value is, the process proceeds to S4.
The process proceeds to T362.

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

In step 304 (ST 304),
The input / output control device 38 _i determines whether or not the variable n is a numerical value end. If the variable n is a numeric end,
The generated reproduction entry is output to the data management device 34 to end the processing. 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 above in the fourth embodiment, the editing result data is recorded by changing the processing contents of the input / output control device _38i and the data management device 34 of the audio / video data recording / reproducing device 3. It is not necessary to record on the playback device 24, and the same content as the edited result data
Video data can be reproduced. Moreover, since the reproduction entry is generated in advance and the reproduction is performed based on the reproduction entry, the processing time for calculating the recording area of the partial data shown in the third embodiment is not required. Therefore, the processing time for calculating the recording area does not hinder reproduction.

[0115] Moreover, generation processing of the reproduction entry shown in the fourth embodiment, the output control unit 38 _i ROM 38
2 and the contents of the ROM 342 of the data management device 34 only need to be 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.

Note that audio / video data recording /
The playback device 3 not only generates a playback entry from the four material data, but also combines the partial data of the five or more material data to reproduce the audio / video data having the same content as the edit result data. It is needless to say that can be generated.

Further, the control system 10 shown in the fourth embodiment
The above algorithm and the signal sequence between the audio / video equipment _4i 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
FIG. 4 is a diagram showing the operation of FIG. However, in the fifth embodiment, the data length of one block is, for example, 10 Mbytes. For example, the audio / video device 4 _i is the source data A to D shown in FIG.
Partial data A to D each having a data length of 40 blocks, 5 blocks, 40 blocks, and 5 blocks
When the editing process of FIG. 17 (B) is performed and the editing result data shown in FIG. 12 (B) is obtained, the input / output control device 38 _i of the audio / video data recording / reproducing device 3 has the fourth In the embodiment, the editing data shown in FIG. 14B is input from the audio / video device _4i . This edited data and FIG.
Based on the record entry of the material data A~D shown (A), the the output control unit 38 _i of the audio-video data recording and reproducing apparatus 3 shown in the fourth embodiment performs the processing, FIG. 14 The reproduction entry of the editing 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 the audio / video data having the same contents as the editing result data, the partial data A, C
Since the last part of each part and the start part of each of the partial data B and D are recorded in a separate recording area on the recording medium of the recording / reproducing device 24, the recording is performed when the reproduction of the partial data B and D is completed. -It is necessary to access the recording area of the recording medium of the reproducing device 24 and wait for rotation. on the other hand,
Since the partial data B and D each have a small data length of 5 MB, there is a possibility that the buffer memory 222 (FIG. 7) of the input / output control device 38 _i may underflow within the time required for access and rotation wait. When an underflow occurs in the buffer memory 222, continuous reproduction becomes impossible. The audio / video data recording / reproducing device 3 in the fifth embodiment aims to solve such a problem.

[0120] Data length is, in order to reproduce the short partial data enough could cause an underflow of the buffer memory 222 is continuously, the input-output control unit 38 _i in the fifth embodiment, the audio and video The editing data (FIG. 14B) received from the device _4i is analyzed, and the short partial data and the short partial data are recorded in advance by the recording / reproducing apparatus 2.
No. 4 is continuously recorded in a predetermined recording area of the recording medium, and the above-described problem is avoided as a data length that does not cause underflow in the buffer memory 222. The fifth
Audio / video data recording / reproducing device 3 in the embodiment
The output control device 38 _i operation, that is, each component other than the storage contents of the ROM382 of the input-output control unit 38 _i is provided with the components of the audio and video data recording and reproducing apparatus 3 according to the fourth embodiment Is the same.

[0121] Hereinafter, a specific example, the outline of the processing of the output control device 38 _i of the audio-video data recording and reproducing apparatus 3 according to the fifth embodiment. As mentioned above,
Material data A to 100 blocks to 189 blocks, 200 blocks to 269 blocks, 300 blocks to 379 blocks, and 400 blocks to 469 blocks, respectively, of the recording medium of the recording / reproducing apparatus 24.
D (FIG. 17A), each of 110 blocks to 1 block
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. It is included in the editing result data as (FIG. 17B).

For example, the buffer memory 222 (FIG. 7)
However, when the data length is 10 blocks or less, there is a possibility that underflow may occur, and when the partial data B and D are reproduced, continuous reproduction may not be performed. 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, 'Can be played continuously without any trouble.

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

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

[0125] in any of the input-output control unit 38 ₁ to 38 DEG _n, if the edited result data reproduction shown in FIG. 12 (B) from the audio and video equipment 4 _i is requested, 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 the request, the data management device 34 requests the input / output control devices 38 ₁ to 38 _{1 to} 3 3 to request the reproduction entry.
8n, and output the reproduction entry to any of the _n . One of the input-output control unit 38 ₁ to 38 DEG _n which has received the reproduction entry, based on the reproduction entry received, to play the same audio and video data editing result data.

As described above, in the compile recording area, the buffer memory 222 records in advance the partial data having a data amount that does not cause underflow, and further records the partial data recorded in the normal recording area and the compile recording area. It generates a reproduction entry through the partial data recorded in the area, in response to a request of the audio-video equipment 4 _i, 17
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 is reproduced. In addition to the effect of rapid reproduction of the data No. 3, continuous reproduction of the same audio / video data as the edit result data can be guaranteed.

Here, as shown in FIG. 17D, the value of the deleteable flag of the partial data recorded in the compile recording area is set to ON, and the value of the deleteable flag of the other partial data is set to OFF. I do. FIG. 17 shows the deletion enable flag.
The reason for setting the value shown in (D) is that even if the data recorded in the compile 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
If the number of blocks is smaller than the number of blocks, the partial data A and C are added to the partial data B and D and recorded in the compile recording area, and a reproduction entry is generated, whereby continuous reproduction can be guaranteed. Further, if the addition of the partial data A, C and the partial data B, D does not result in less than 10 blocks each, the partial data (not shown) preceding the partial data A is further added to the partial data A, B. By adding the partial data (not shown) after the partial data D to the partial data C and D, or by recording all of the partial data A to D continuously in the compilation recording area, for example, Reproduction can be guaranteed.

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

[0130] Hereinafter will be described the contents of the compilation process performed by the input-output control unit 38 _i in the fifth embodiment in detail. Figure 18 is a flowchart showing the contents of a compilation process that output control unit 38 _i of the audio-video data recording and reproducing apparatus 3 is performed in the fifth embodiment. FIG.
Are the audio / video devices 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. FIG. 4 is a signal sequence diagram showing a signal sequence during the operation. FIG. 20 shows ST4 shown in FIG.
It is a flowchart which shows the processing content of 50. FIG.
Is a flow chart further showing in detail the contents of the compilation process performed by the output control unit 38 _i of the audio-video data recording and reproducing apparatus 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. I / O controller 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 (ST 406) and step 408 (ST 408), the data management device 3
4 searches the file entry (FE) and the record entry (RE) of the material data including the partial data included in the editing result data based on the editing data, and generates a reproduction entry (FIG. 14C). Further, the data management device 34
Increments the deleteable flag of the record entry found as a result of the search, and sets the value of the deleteable flag to OF.
Change to F.

In step 410 (ST410),
Data management device 34 outputs the file entry and record entry found reproduction entry and search results generated against the input-output control unit 38 _i. In step 412 (ST412), the input / output control device 3
8 _i analyzes the reproduction entry sent from the data management unit 34, the data length is short, retrieves partial data that can not be continuously reproduced.

In step 450 (ST450),
Output control apparatus 38 _i determines the need for compilation. The contents of processing according to the input-output control unit 38 _i determines the need for compilation by is shown in Figure 20. Only when compile processing is necessary, ST4
Proceed to step 16. In step 416 (ST416), the input / output control device 38 _i
Is required to secure a recording area (compile recording area) necessary for the compiling process. Note that the data length of the compile recording area is 2 cT or more, assuming that the partial data that cannot be continuously reproduced is set to the data length T or less and the number of the partial data that cannot be continuously reproduced is c.

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

In step 422 (ST422),
The input / output control device 38 _i generates a new reproduction entry based on the result of the compiling process, and
4 is output. In step 424 (ST424), the data management device 34 sends the input / output control device 38 _i
Is replaced with the reproduction entry created in the process of ST 406 and updated.

In the flowchart shown in FIG. 21, data b (k), s in reproduction entry R (k)
(J) is defined as shown in FIG.
(K) is defined as shown in FIG. In other words, as shown in FIG. 23A, the variable Z in ST566 in FIG. 21 is the short partial data (FIG. 17B) in addition to the short partial data (FIG. 17B). Indicates the data length of data removed from the immediately preceding partial data. Also, the numerical value s in ST544 in FIG.
(K) -TX is, as shown in FIG. 23B, 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. 20B). Indicates the data length of the data removed from the data.

[0138] Based on the reproduction entry generated as described above, it is possible to play the same reproduction data as the edited result data requested from the audio-video device 4 _i, moreover, shown in the fifth embodiment Audio / video data recording
The playback device 3 can quickly and surely continuously play back the same audio / video data as the edit result data similarly to the audio / video data recording / playback device 3 shown in the fourth embodiment. .

[0139] Hereinafter, the processing contents when the audio and video equipment 4 _i requests the deletion of the audio and video data to audio and video data recording and reproducing apparatus 3. FIG. 24 shows FIG.
Of the audio / video device 4 _i and the data management device 3 when the audio / video device 4 _i requests the audio / video data recording / reproducing device 3 to delete the audio / video data.
6 is a flowchart illustrating a process of No. 4; FIG.
Audio and video equipment 4 _i are audio and video equipment 4 _i in the case of requesting deletion of audio and video data to audio and video data recording and reproducing apparatus 3, the input-output control unit 38 _i and data management as shown in FIG. 3 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 equipment 4 _i
Requests the deletion of the audio and video data, and outputs the DELETE command including the file name of the audio and video data requests deletion relative to the input-output control unit 38 _i. The input / output control device 38 _i receives this DELETE command. In step 582 (ST582), the input / output control device 38 _i sends the DEL
Outputs ETE command.

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

Hereinafter, the processing contents when the audio / video equipment 4 _i requests the audio / video data recording / reproducing device 3 to delete the audio / video data will be described. FIG.
Processing performed by the input / output control device 38 _i and the data management device 34 when the audio / video device 4 _i shown in (1) requests the audio / video data recording / reproduction device 3 to delete the reproduction entry (edit 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 FIG. 4 is a signal sequence diagram showing signals transmitted and received between a control device 38 _i and a data management device 34.

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

In step 884 (ST884),
The data management device 34 deletes the file entry and the reproduction entry of the editing result data. Step 886 (S
In T886), the data management device 34 decrements the value of the deleteable flag of the reproduction entry by one. Step 888
In (ST888), 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, the audio / video data having the same content as the editing result data is obtained by combining any lengths of partial data. Is reproduced, the continuity of the reproduced audio / video data is not lost.
Moreover, in order to realize the audio / video data recording / reproducing apparatus 3 shown in the fifth embodiment, the audio / video data recording / reproducing apparatus 3 shown in the fifth embodiment and the fourth embodiment must be implemented. What is necessary is just 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 required. In addition,
The same applies to the audio / video data recording / reproducing apparatus 3 shown in the fifth embodiment as to the audio / video data recording / reproducing apparatus 3 shown in the third and fourth embodiments. Various deformations are possible.

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 the reproduction entry has been described. However, in the sixth embodiment, the case where the data management device 34 generates the reproduction entry and performs the compile process. Will be described. The contents of the processing other than the generation and the compilation of the reproduction entry of the reproduction entry of the input / output control device 38 _i and the data management device 34 are the same as those of the fifth embodiment.

FIG. 28 shows the voice / voice in the sixth embodiment.
6 is a flowchart showing the contents of a compile process performed by a data management device 34 of the video data recording / reproducing device 3.
FIG. 29 shows an audio / video device 4 _i and an input / output control device 38 _i when the data management device 34 of the audio / video data recording / reproducing device 3 performs compiling processing in the sixth embodiment.
FIG. 4 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 content 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 FIG. 28 and FIG.
In step 702 (ST702), the audio / video equipment 4_i
Contains editing data, and sends the editing data to the input / output control device 3.
8_iCommand to be received by VFL_DOWNLOAD command
Input / output controller 38 _iOutput to Entering and leaving
Force control device 38_iIs the VFL_DOWNLOAD
Receive the command. In step 704 (ST704)
And the input / output control device 38_iIs the received VFL_DO
Issue a WNLOAD command to the data management device 34
Power.

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

In 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 whose data length is short and continuous reproduction is impossible. Step 712
In (ST712), the input-output control unit 38 _i determines the need for compilation. I / O controller 38
The contents of the processing relating to the determination of the necessity of the compile 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 the same as that of S750 shown in FIGS.
This is the same as the processing content of T450.

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

In the flowchart shown in FIG. 30, data b (k), s in reproduction entry R (k)
(J) is defined as shown in FIG.
(K) is defined as shown in FIG. That is, as shown in FIG. 23A, the variable Z in ST854 in FIG. 30 is the short partial data (FIG. 17B) and the short partial data Indicates the data length of data removed from the immediately preceding partial data. Also, the numerical value s in ST832 in FIG.
(K) -TX is, as shown in FIG. 23 (B), in addition to the short partial data (FIG. 20 (B)), in order to make the data longer than the data length T, immediately after the short partial data. Indicates the data length of the data removed from the partial data.

As described above, when the reproduction entry is generated and compiled in the data management device 34, the amount of data transmitted and received on the main CPU bus 32 can be reduced, and the possibility of occurrence of a bus neck decreases. I do. Note that the reproduction entry generation and compilation processing shown in the fifth embodiment and the sixth embodiment can realize the same function, so that the configuration (connected) of the audio / video data recording / reproducing device 3 is established. depending to the number) of audio and video equipment 4 _i, it is possible to select the direction which can optimize the performance of the audio and video data recording and reproducing apparatus 3.

[0154]

As described above, according to the audio / video data recording / reproducing apparatus according to the present invention, a hard disk and a magneto-optical disk (MO disk; Magnetic-Optic) are provided.
al Disc) to record a plurality of audio / video data to be edited on a randomly accessible recording medium, and reproduce and provide arbitrary audio / video data in response to a request from an external device such as an editing device. Can be.

Further, 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 according to the present invention, the audio / video data of the editing result (editing result data) can be added to the recording medium without duplicating recording of the same audio / video data. Audio / video data of exactly the same content can be reproduced.

Further, according to the audio / video data recording / reproducing apparatus of the present invention, management of a recording area (occupied recording area) and an empty recording area occupied by audio / video data in a recording medium, external audio / video equipment Processing required for the audio / video data recording / reproducing device, such as processing relating to input / output control signals input from the device and protocol control relating to input / output of audio / video data to / from audio / video equipment Can be distributed to separate components.

Further, according to the audio / video data recording / reproducing apparatus according to the present invention, the processing load is prevented from being concentrated on a specific component, and audio / video data can be exchanged with more external audio / video devices. Video data can be input and output at high speed. In the audio / video data recording / reproducing apparatus according to the present invention, a bus for transmitting / receiving audio / video data;
The bus for transmitting and receiving 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 device according to the present invention in a second embodiment.

FIG. 4 is a diagram illustrating a configuration of a data management device illustrated in FIG. 3;

5 (A) to 5 (D) show an occupied recording area of audio / video data A and B recorded in a recording area of a recording medium of the recording / reproducing apparatus shown in FIG. FIG. 3 is a diagram illustrating an example of occupied recording area data and empty recording area data of audio / video data A and B.

FIGS. 6A to 6C are diagrams illustrating contents of recording area data generated by the data management device shown in FIG. 3;

FIG. 7 is a diagram illustrating a configuration of each of the input / output control devices illustrated in FIG. 3;

8 is a block diagram showing a second embodiment in which the audio / video data recording / reproducing device converts the input audio / video data reproduced from the recording / reproducing device shown in FIG. 3 into the audio / video data shown in FIG. 9 is a flowchart illustrating a process when supplying the image to a video device.

9 shows 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 apparatus 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.

FIG. 10 is a block diagram showing a second embodiment in which the audio / video data recording / reproducing device converts the audio / video data input from the audio / video device shown in FIG. 1 to the recording / reproducing device shown in FIG. It is a flowchart which shows the process at the time of recording.

11 is a block diagram showing a second embodiment in which the audio / video data recording / reproducing apparatus converts the audio / video data input from the audio / video apparatus shown in FIG. 1 to the recording / reproducing apparatus shown in FIG. FIG. 4 is a signal sequence diagram between an audio / video device, an input / output control device, a data management device, and a recording / reproducing device when recording.

FIG. 12A is a diagram showing a voice / voice according to the third embodiment;
FIG. 3B shows an occupied recording area occupied by the video data A to D in the recording medium of the recording / reproducing apparatus shown in FIG.
FIG. 6 is a diagram illustrating an example of editing result data obtained as a result of cut editing processing on a part of audio / video data A to D;

FIG. 13 is a diagram showing an audio / video device having the same contents as the editing result data shown in FIG.
FIG. 3 is a diagram illustrating the content of edit data output to an input / output control device of a video data recording / reproducing device.

FIGS. 14A to 14C show file entries and record entries of audio / video data (material data) AB shown in FIG. 12A in the fourth embodiment; FIG. 7 is a diagram illustrating edit data used for reproducing the edit result data shown in ()) and a reproduction entry generated by processing of the data management device.

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

FIGS. 16A to 16C are diagrams showing edit data, file entries, and record entries relating to reproduction entry generation processing, and reproduction entries obtained as a result of reproduction entry generation processing;

FIGS. 17A to 17D are diagrams showing operations of an input / output control device and a data management device (FIG. 3) of the audio / video data recording / reproducing device according to 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 illustrates 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 compiling process in the fifth embodiment. It is a signal sequence diagram.

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

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

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

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

24 is a flowchart showing 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 audio / video data. It is.

25 shows 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. FIG. 4 is a signal sequence diagram showing signals transmitted and received between the first and second embodiments.

FIG. 26 shows 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 shows the audio / video device, the input / output control device, and the 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). FIG. 4 is a signal sequence diagram showing signals transmitted and received between management devices.

FIG. 28 is a flowchart showing 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. 29 is a diagram illustrating signals between an audio / video device, an input / output control device, and a data management device when a data management device of an audio / video data recording / reproducing device performs a compiling process in the sixth embodiment. It is a signal sequence diagram which shows a sequence.

FIG. 30 is a flowchart showing in more 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 illustrating a configuration example of a conventional audio / video data recording / reproducing device.

[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 to} 224 _n ... I / O control circuit, 220, 220 ₁ to 2
20 _i ... audio / video data IF, 222, 222 ₁ to 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 device, 38 _i , 38 _{1 to} 38 _n .
I / O control device, 380 ... microprocessor, 382
.. ROM, 384 RAM, 388 local CPU bus, 390 dual port RAM, 392 recording / reproducing device IF, 394 address generation circuit, 24 recording /
Reproduction device, 30 data bus

Claims (4)

(57) [Claims] 1. A recording / reproducing means for recording material data including video data and / or audio data on a randomly accessible recording medium and reproducing the material data from the recording medium, and the recorded material data A first recording area managing means for managing a first occupied recording area occupied in the recording medium and a free area of the recording medium; and reproducing a part or all of the material data in combination as partial data. A second recording area management means for managing a second occupied recording area occupied by the part or all of the material data as the partial data in the recording medium; , And receives the first occupied recording area, the second occupied recording area, and the empty recording area via the first bus. And a plurality of input / output control means connected to the recording / reproducing means via a second bus, respectively, for inputting / outputting material data via the second bus. Each of the control means, upon a request for recording material data, designates a recording area in which the material data is to be recorded to the recording / reproducing means based on the empty recording area, and causes the recording / reproducing means to perform recording. An audio / video data recording / reproducing apparatus, comprising: a reproduction control means for designating and reproducing the first and second occupied recording areas to the recording / reproducing means. 2. The first occupation recording section for generating a first occupation recording area list in a linked list format in which the first occupation recording area of recorded material data is associated with the first occupation recording area list. Area list generating means, and an identification flag which takes a first value when the material data corresponding to the first occupied recording area list can be deleted.
First identification flag adding means for adding to the occupied recording area list, and free recording area list generating means for generating a free recording area list in a linked list format associated with the free recording area of the recording medium , The second recording area management means generates a second occupation recording area list in a linked list format in which the second occupation recording areas of the partial data to be combined and reproduced are associated with each other . Means for setting an identification flag which takes a first value when material data corresponding to the second occupied recording area list can be deleted,
2. The audio / video data recording / reproducing apparatus according to claim 1, further comprising second identification flag adding means for adding to the occupied recording area list. 3. When the deletion of material data is requested, only when the value of the identification flag of the second occupied recording area list corresponding to the material data is the first value, the corresponding recording is performed. A recording area releasing unit for releasing the recording area of the medium and deleting the corresponding first occupied recording area list and the second occupied recording area list; - claim 2, characterized in that it comprises a free recording area list generating means for generating a vacant recording area of the list format
The described audio / video data recording / reproducing device. 4. When the partial data is shorter than a predetermined data length, short partial data shorter than the predetermined data length and a predetermined part of the partial data reproduced before and after the short partial data are separated. A partial data recording means for continuously recording in a predetermined recording area of the recording medium; and the partial data and the partial data recorded in the predetermined recording area of the recording medium based on the first occupied recording area. predetermined portion and the short partial data of the partial data, and a third recording area management means for managing the third occupation recording area showing a recording region occupied in the recording medium, said reproduction control means, material At the time of data playback request,
Specifies the first occupied recording region of the material data, the second occupation recording area and the third occupation recording area of said recording means, according to claim 1, characterized in that to regenerate
The described audio / video data recording / reproducing device.