JPH07226023A - Method and system for editing - Google Patents

Abstract

PURPOSE:To shorten the editing time with a simple construction and processing, to improve the editing efficiency and to provide a highly precise editing result by temporarily recording the data reproduced at a high speed on a disk drive, reproducing them, performing a special effect processing, reproducing it after recording again and recording it at a high speed. CONSTITUTION:A high speed transfer equipment (VTR) 21 setting a video tape casette 20 reproduces a video signal and an audio signal on a recording medium 20 at a high speed based on a reproducing control signal EPc from a control part 27 to store temporarily or to transfer to a storage 22. The device 22 supplies the video and audio data transferred at a high speed to a video special effect mixer 25 through output IF circuits 23-1 to 23-k based on a high speed recording/reproducing signal EPc from the control part 27. The processed data are transferred to the area Ar2 of the device 22 through an input IF 24 to be recorded. The data are read out at a high speed, and are supplied to the video tape cassette 29 through the high speed transfer equipment 26 to be recorded at a high speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an editing method and an editing system suitable for application to, for example, an editing system using a VTR.

[0002]

2. Description of the Related Art Conventionally, for example, at a broadcasting station, a work for editing a material to be broadcast and recording it on a video tape cassette is performed. For example, a work for editing and recording a plurality of commercial (CM) materials in one video tape cassette to create a so-called single CM tape, for editing and recording the materials used in one program in a video tape cassette for broadcasting Editing work (for sending) corresponds to this.

Usually, a video tape cassette containing the original material is called a material tape or the like. Play this video tape cassette as a material tape on the VTR,
Various signal processing is performed on the reproduced signal, and the material signal obtained by performing this signal processing is recorded in a video tape cassette used for broadcasting to create a video tape cassette for broadcasting.

FIG. 18 is a block diagram showing an example of a conventional editing system. The conventional editing system will be described below with reference to FIG.

In FIG. 18, 1 is a video tape cassette as a material tape, and 13 is a video tape cassette for broadcasting. The video tape cassette 1 as a material tape is set in the reproduction side VTR 2 for reproduction, the broadcast video tape cassette 13 is set in the recording side VTR, and the output from the DME (digital multi-effector) 7 is recorded. . Although this example shows an example using the DME 7, a system using an editing machine may be used as long as it simply creates a tape for broadcasting, and the playback side VTR 2 and the recording side VTR 8 are connected. Anything is fine.

That is, in the system shown in FIG.
The video tape cassette 1 as a material tape is reproduced on the reproducing side VTR 2, the special effect processing is applied to the reproduced signal by the DME 7, and the reproduced signal subjected to the special effect processing is set on the recording side VTR 8. It is recorded on the video tape cassette 13 for use in recording.

Further, in the reproducing side VTR 2 shown in FIG. 18, the reproducing head 3 is connected to one fixed contact 5a of the switch 5 for head switching, and the reproducing head 4 is the other fixed contact 5b of the switch 5 for head switching. Connected to V
The movable contact 5c of the switch 5 is selectively connected to one or the other fixed contact 5a or 5b by a switching signal from a system controller (not shown) of the TR main body 6.

Whether the reproducing VTR 2 is an analog VTR or a digital VTR, the video and audio signals output from the reproducing VTR 2 are 60 fields / sec in the NTSC system and 50 in the PAL system.
It is supplied to the DME 7 at a transfer rate based on fields / second. Explaining with an analog VTR, the playback VTR 2
The video signal output from the device has a transfer rate of 60 fields / sec in the NTSC system and 50 fields / sec in the PAL system. In this example, the DME 7 has analog video and audio input terminals and digital video and audio input terminals as input terminals.

Then, in the DME 7, the playback side VT
The video signal from R2 is subjected to various processing such as a special effect, for example, a mosaic effect, image movement, reduction, enlargement, and rotation. This processing is, for example, 60 if the NTSC method
Field / second, and in the PAL system, 50 field / second is used as a reference. The output of this DME7 is the recording side VT.
The VTR body 12 of the recording side VTR 8 supplied to the R8
In the above, the analog or digital signal processing for predetermined recording is performed and then recorded in the set video tape cassette 13.

Similarly to the reproducing side VTR 2, the recording side VTR 8 is also connected with the recording head 9 to one fixed contact 11a of the head switching switch 11, and the recording head 10 is connected to the other fixed contact 11b of the head switching switch 11.
It is connected to the. The movable contact 11c of the switch 11 is selectively connected to one or the other fixed contact 11a or 11b by a switching signal supplied from a system controller (not shown) to the VTR main body 12. This recording also has the same timing as above, namely, NTS
In the C method, 60 fields / second is used, and in the PAL method, 50 fields / second is used as a reference.

The applicant has previously displayed the first and second points of image data of a predetermined unit on the display means, and the first and second points of the predetermined unit displayed on the display means. Image data is designated by the designating means, and the time code data of the image data at the first or second point designated by the designating means, the state of the related equipment, and the identification number are displayed by the control means, thereby improving the editing efficiency. Editing device that can improve the usability as well as
For example, it is possible to change the contents of the edit files EDL1 to EDLn by deleting, copying, moving, and exchanging the position of the image data in edit units displayed on the screen using a pointing device or a keyboard. You can perform editing work without performing any troublesome work such as playing and rechecking, checking the memory address etc. with the keyboard etc. and entering it, thereby improving the efficiency of editing work. We propose an editing device that can be done (Japanese Patent Application No. 5-874).
(See No. 13).

[0012]

By the way, as described above, in the past, the transfer rate of the video signal in the editing system was 60 fields / sec in the case of the NTSC system.
In the case of the PAL system, it is 50 fields / second, and the transfer rate of the video signal is based on the field frequency or frame frequency of the video signal.

Explaining with an example of an editing system as shown in FIG. 18, the video tape cassette 1 is provided on the reproducing side VTR 2.
The material recorded in is played back and a video signal is output in 60 field seconds. This 60 field / second video signal is processed by the DME 7 with reference to 60 field second, and the processed 60 field second video signal. Is the recording side VT
The data is recorded on the video tape cassette 13 set in R8.

That is, as shown in FIG. 18, in the conventional editing system, since the transfer rate is always uniquely determined by the field or frame frequency of the video signal, the video signal (and of course the audio signal) is edited. Then, it has been necessary to spend a very large amount of time to obtain the video tape cassette 13 as the edited result. In particular, in the editing process, a process other than the process of operating the DME 7 (or switcher or the like) to perform desired processing on the reproduced video signal,
That is, extra work time is spent on reproduction, transfer, recording, etc. (because the operator does not operate and process like the DME 7) that is not directly related to the editing work efficiency. It is also a cause of worsening.

Conversely, although the processing time in the DME 7 in which the operator directly operates to perform the processing may be long,
Playback on playback side VTR2, playback side VTR2 to DME7
The shorter the time spent for the reproduction signal transfer to the recording side VTR8, the transfer of the processing signal from the DME 7 to the recording side VTR8, the recording at the recording side VTR8, and the like, the shorter the time spent for the editing process can be made. However, under the present circumstances, as described above, all the processing is performed based on the field or frame frequency of the video signal, so that the time spent for editing work is shortened and a good editing environment that is easy for the operator to operate is provided. I am unable to provide.

If the operator performs processing using the DME 7, records the video signal as the processing result in the recording side VTR 8, and then determines that the processing by the DME 7 needs to be performed again, the reproducing side VTR 2 The video tape cassette 1 set to the original tape position and the video tape cassette 13 set to the recording side VTR 8 to the original tape position.
The playback side VTR2 is set to the playback state and the recording side VTR8
Must be recorded and the DME 7 must be operated again to redo the editing process. This significantly deteriorates the work efficiency in editing. However, since the recording medium is a video tape cassette, it is unavoidable to redo the editing process with such poor working efficiency, and at present, such a problem cannot be solved. Also, if the redo is repeated many times, the valuable material tape may be damaged.

In addition, if two materials are mixed and switched for editing, another VTR2 on the reproducing side must be added to the editing system shown in FIG. 18, and they are used at the same time. As the number of materials to be played increases, the number of playback VTRs 2 must be increased.

The editing system as shown in FIG. 18 employs a method in which the reproduced signal reproduced by the reproducing VTR 2 is processed by the DME 7 and the signal processed by the DME 7 is recorded in the recording VTR 8. , The work of editing and recording the result in a video tape cassette is to be done multiple times in one video tape cassette,
In this case, a large number of editing points are formed on the video tape cassette 13 shown in FIG. 18, each magnetic track formed by the previous recording process and the magnetic track formed by the current recording process. Since this edit point (or the seam portion consisting of the previous recording portion and the current recording portion) is present, when the video tape cassette 13 having many editing points is reproduced, for example There is a high possibility that a disturbance or the like will be caused, or the effect of the edit point will appear in the reproduced image.

The present invention has been made in consideration of the above points, and simplifies the components of the editing system, simplifies and improves the editing work, and reproduces the edited video tape cassette. The present invention is intended to propose an editing method and system capable of preventing the reproduction image from being affected by the editing point.

[0020]

According to the editing method of the present invention, the information to be edited is reproduced at a speed n times the normal reproduction speed and the information is output at a transfer speed n times the normal transfer speed. Information of a transfer rate n times the normal transfer rate is recorded or stored, the recorded or stored information is read at the normal transfer rate, and the read information of the normal transfer rate is subjected to predetermined signal processing. Information that has been subjected to signal processing is recorded or stored, information is read at a transfer speed n times the normal transfer speed, and information read at a transfer speed n times the normal transfer speed is read at the normal recording or storage speed. It is designed to be recorded or stored at a speed of n times.

Further, the editing system of the present invention reproduces the information to be edited at a speed n times the normal reproduction speed and outputs the information at a transfer speed n times the normal transfer speed.
A recording or storage unit 22 for recording or storing reproduction information from the high-speed reproduction unit 21; a signal processing unit 25 for performing a predetermined signal processing on the information read from the recording or storage unit 22; When the information output from the signal processing unit 25 and recorded or stored in the recording or storage unit 22 is read, the read information is recorded or stored at a speed n times the normal recording or storage speed. High-speed recording or storage unit 26, high-speed reproducing unit 21, recording or storage unit 22, signal processing unit 25, high-speed recording or storage unit 26
And a control unit 28 for controlling the.

Further, the editing system of the present invention is as described above.
When the high-speed reproduction unit 21 is composed of a VTR or a disk drive, the high-speed reproduction unit 21 includes one or more heads 3 for reproducing the information recorded on the recording medium.
Head reproducing unit 37-1 equipped with 8-1 to 38-2n
Reproduction information processing means 43-1 to 4-3 for performing predetermined signal processing on reproduction information from 37-2n, 38-1 to 38-2n, 40 and one or a plurality of heads 38-1 to 38-2n.
3-n, 44-1 to 44-n, 45-1 to 45-n, 4
6-1 to 46-n, 47, 50 and 52.

Further, the editing system of the present invention is as described above.
One or more heads 38-
One or a plurality of information extracting means 43-1 to 43-n for extracting necessary information from the reproduction information from 1 to 38-2n.
And one or more of the information extraction means 43-1 to 4-4.
One or a plurality of channel decoding means 44-1 to 44-n for respectively performing a channel decoding process on one or a plurality of extracted information from 3-n, and these one or a plurality of channel decoding means Means 4
One or more error correction means 4 for error correcting one or more output information from 4-1 to 44-n
5-1 to 45-n and one or more time axis compression for time axis compression of one or more outputs from these one or more error correction means 45-1 to 45-n. When there are a plurality of outputs from the means 46-1 to 46-n and one or more of the time base compression means 46-1 to 46-n, the plurality of outputs are converted into the original information unit. It is composed of a multiplexer 47.

Further, the editing system of the present invention is as described above.
When the high speed recording or storage unit 26 is composed of a VTR or a disk drive, the high speed recording or storage unit 26 is
A plurality of heads 38-1 to 38-2n for recording information at a transfer speed n times the normal transfer speed on the recording medium 39.
Head recording units 37-1 to 37-n, 38-1 equipped with
To 38-n, 40 and recording information processing means 31, 32-1 to 32-n, 33-1 to 33-n for performing a predetermined signal processing on the information of the transfer rate n times the normal transfer rate. , 34
-1 to 34-n.

Further, the editing system of the present invention is as described above,
The recording information processing means includes a demultiplexer 31 that divides information having a transfer rate n times the normal transfer rate into a plurality of information units, and a plurality of units that extends the time axis of the plurality of information from the demultiplexer 31. Time axis extending means 32-1
32-n and a plurality of these time axis expansion means 32-1.
A plurality of error correction code adding means 33 for adding an error correction code to each of a plurality of output information from 32-n
1 to 33-n and a plurality of channel coding means 34-1 to 34-34 that perform channel coding processing on a plurality of output information from the plurality of error correction code adding means 33-1 to 33-n. and n.

Further, the editing system of the present invention is as described above,
The high-speed reproducing unit supplies a semiconductor memory unit 155 for storing input information and a control signal for writing to the semiconductor memory unit 155 when storing the input information in the semiconductor memory unit 155, When the stored information is read, the semiconductor memory unit 155 stores the semiconductor memory unit 1
In order to read the information stored at 55 at a transfer rate n times the normal transfer rate, at least n times the speed of the write control signal used when the input information is stored in the semiconductor memory unit 155 is read. Write / read control means 156 for supplying a control signal to the semiconductor memory unit 155.
And reproduction information processing means 161, 162, 163, 164 that performs predetermined signal processing on the information of the transfer rate n times the normal transfer rate read from the semiconductor memory unit 155.
It is composed of and.

Further, the editing system of the present invention is as described above,
A semiconductor memory unit 155 for storing information of a transfer rate n times as high as a normal transfer speed, and a semiconductor memory unit 155 for inputting information at a transfer speed n times as high as the normal transfer speed, by a high-speed recording or storage means. A control signal for writing is supplied to the semiconductor memory unit 155 when the information is stored in the memory 155, and information can be read from the semiconductor memory unit 155 at a normal transfer rate when the information stored in the semiconductor memory unit 155 is read. A write / read control unit 156 for supplying to the semiconductor memory unit 155 at least a read control signal at a speed 1 / n times as high as the write control signal used when storing the input information in the semiconductor memory unit 155, and a normal read / write control unit 156. It is composed of recording information processing means 151, 152, 153 for performing a predetermined signal processing on the information of the transfer rate.

Further, the editing system of the present invention is as described above.
The recording or storage unit 22 divides the information of the transfer rate n times the normal transfer rate into n pieces of information, and the input information of the normal transfer rate into n pieces of information. A second demultiplexer 75 and recording or storing means 78-1, 78 for recording or storing each n pieces of information from the first or second demultiplexers 61, 75.
-78 ... m, 80-1, 80-2, ...
Matrix switcher 6 for selectively outputting 80-m and a plurality of information read from the recording or storage means
5, recording or storage means 78-1, 78-2, ...
.. 78-m, 80-1, 80-2, ... Converting n pieces of information having a transfer rate n times the normal transfer rate read from 80-m into original information and outputting it Multiplexer 8
It is composed of 1 and 1.

Further, the editing system of the present invention is as described above.
First and second demultiplexers 61 and 75, recording or storage means 78-1, 78-2, ... 78-m,
80-1, 80-2, ..., 80-m and the matrix switcher 65 between the first or second demultiplexers 61 and 75 or recording or storage means 78-1, 7.
8-2, ... 78-m, 80-1, 80-2, ...
..Bus 62-as many as the number of information from 80-m
1, 62-2, ..., 62-m connection, bus 62-
62-m are provided with control units 64 and 76 for controlling the time distribution of input / output information.

Further, the editing system of the present invention is as described above.
Recording or storage means 80-1, 80-2, ... 80
-M, 78-1, 78-2, ... Medium or recording or storage means 80-1, 80-2, ... Used in 78-m
... 80-m, 78-1, 78-2, ... 78-
When m is plural, plural recording or storage means 80-1,
80-2, ... 80-m, 78-1, 78-2, ...
... 78-m is used as a first area Ar1 for recording or storing an editing material and a second area Ar2 for recording or storing an edited material.

Further, the editing system of the present invention is as described above.
Decompression means 23-1, 23-2 for temporally decompressing the information of the transfer speed n times the normal speed from the high speed reproduction unit between the output side of the recording or storage unit 22 and the input side of the signal processing unit 25,
... 23-k and the compression means 24 for temporally compressing the output of the signal processing unit or the input information from the outside between the input side of the recording or storage unit 22 and the output side of the signal processing unit or the outside. And are provided.

Further, the editing system of the present invention is as described above,
The decompression means 23-1, 23-2, ..., 23-k are buffer memory means 9 for storing information of a transfer rate n times the normal transfer rate read from the recording or storage unit 22.
1-1, 91-2, ... 91-n, 92-1, 92
-..., 92-n, 94 and this buffer memory means 91-1, 91-2, ..., 91-n, 92-
, 92-2, ... 92-n, 94, variable speed reproduction processing means 96, 97 for performing variable speed reproduction processing of output information of normal transfer speed, and output information from the variable speed reproduction processing means 96, 97. Output means 102, 104, 98, 1 for outputting
00 and a control signal from the control unit 27, based on the buffer memory means 91-1 91-2, ... 91-n 92
, 92-2, ..., 92-n, 94, and reproduction control communication means 107 for controlling the variable speed reproduction processing units 96, 97.

Further, the editing system of the present invention is as described above.
When the information of the transfer rate n times the normal transfer rate read out from the recording or storage unit 22 is compression-encoded, the buffer memory means 91-1 91-2 ,.
... 91-n, 92-1, 92-2, ... 92-
The compression decoding processing means 95 is provided between the n, 94 and the variable speed reproduction processing means 97.

Further, the editing system of the present invention is as described above.
The compression means is input means 111, 11 for inputting information of a normal transfer rate from the signal processing unit 25 or the outside.
3, 116, 118 and the input means 111, 113,
Buffer memory 121 for temporarily storing output information from 116 and 118, and input means 111, 113 and 11
6, 118 and recording control communication means 124 for controlling the buffer memory 121.

Further, the editing system of the present invention is as described above.
In the case of compressing and encoding the information of the normal transfer rate from the signal processing unit 25 or the outside, the input means 111, 1
13 is provided between the buffer memory 121 and the buffer memory 121.

[0036]

According to the above-described editing method of the present invention, the information to be edited is reproduced at a speed n times the normal reproduction speed and the information is output at a transfer speed n times the normal transfer speed. Information of a transfer rate n times the transfer rate is recorded or stored, the recorded or stored information is read at a normal transfer rate, and the read information of the normal transfer rate is subjected to predetermined signal processing, and this signal processing is performed. The recorded information is recorded or stored, the information is read at a transfer speed n times the normal transfer speed, and the information read at a transfer speed n times the normal transfer speed is n times the normal recording or storage speed. Record or store at the speed of. By this, when editing information, the speed at which the information to be edited is reproduced and the reproduction information is transferred,
In addition, the speed of transferring and recording after editing can be greatly improved.

According to the structure of the editing system of the present invention described above, the high-speed reproducing section 21 reproduces the information to be edited at a speed n times as high as the normal reproduction speed and the information is made n times as high as the normal transfer speed. The reproduction information from the high-speed reproduction unit 21 is output at the transfer speed, and the recording or storage unit 22 records or stores the reproduction information, and the signal processing unit 25 performs predetermined signal processing on the information read from the recording or storage unit 22. Then, when the information output from the signal processing unit 25 and recorded or stored in the recording or storage unit 22 is read, the read information is recorded or stored in the normal recording or storage unit in the high-speed recording or storage unit 26. Recording or storage is performed at a speed n times the speed, and the recording or storage unit 22, the signal processing unit 25, and the high-speed recording or storage unit 26 are controlled by the control unit 28. As a result, when the information is edited, it is possible to remarkably improve the speed at which the information to be edited is reproduced, the reproduction information is transferred, and the reproduction information is transferred and recorded.

Further, according to the structure of the editing system of the present invention described above, the high-speed reproducing section 21 is composed of a VTR or a disk drive, and the information recorded on the recording medium 39 is recorded by one or a plurality of heads 38-1 to 38-38. -2n mounted head reproducing units 37-1 to 37-2n, 38-1 to 38
-Replay at 2n, 40, one or more heads 38
Reproduction information processing means 4 for reproduction information from -1 to 38-2n
3-1 to 43-n, 44-1 to 44-n, 45-1 to 4
Predetermined signal processing is performed at 5-n, 46-1 to 46-n, 47, 50, and 52. As a result, in addition to the above effects, the reproduction, recording, and transfer times during editing can be set to n times the normal speed.

Furthermore, according to the configuration of the editing system of the present invention described above, one or a plurality of information extracting means 43-1.
43-n, one or a plurality of heads 38-1 to 38-38
-The necessary information is extracted from the reproduction information from -2n, and this 1
One or a plurality of extracted information from one or a plurality of information extracting means 43-1 to 43-n is subjected to a channel decoding process by one or a plurality of channel decoding means 44-1 to 44-n. , These one or a plurality of channel decoding means 44-1 to 44-
1 error correction of one or more output information from n
One or a plurality of error correction means 45-1 to 45-n, and one or a plurality of these error correction means 45-
1-45-n output of one or a plurality of time-axis compression from one or a plurality of time-axis compression means 46-1 to 46-46.
-N, and when there are a plurality of outputs from these one or a plurality of time axis compression means 46-1 to 46-n, the plurality of outputs are converted into the original information unit by the multiplexer 47. As a result, in addition to the above effects, playback during editing,
The recording and transfer time can be set to n times the normal speed, and the predetermined signal processing can be applied to each of the n outputs.

Further, according to the configuration of the editing system of the present invention described above, the high-speed recording or storage unit 26 is composed of a VTR or a disk drive, and the recording information processing means for the information of the transfer speed n times the normal transfer speed. 31, 32-1
~ 32-n, 33-1 to 33-n, 34-1 to 34-n
Predetermined signal processing is performed with the plurality of heads 38-1 to 38-3.
8-2n mounted head recording units 37-1 to 37-n,
38-1 to 38-n and 40 record information having a transfer rate n times the normal transfer rate on the recording medium 39. As a result, signal processing and recording can be performed at a speed n times the normal speed.

Furthermore, according to the configuration of the editing system of the present invention described above, the information of the transfer rate n times the normal transfer rate is divided into a plurality of information units by the demultiplexer 31, and the plurality of information from the demultiplexer 31 are divided. The time axis of the information of (1) is expanded by a plurality of time axis expansion means 32-1 to 32-n,
A plurality of error correction code addition means 33-1 to 33-n add error correction codes to the plurality of output information from the plurality of time axis expansion means 32-1 to 32-n, respectively, Error correction code adding means 33-1
33-n, a plurality of channel coding means 34-1 to 34-n perform channel coding processing on a plurality of output information. As a result, the speed of reproduction, recording, and transfer can be increased to n times the normal speed, and signal processing can be performed even at this speed.

Further, according to the configuration of the editing system of the present invention described above, when the input information is stored in the semiconductor memory unit 155, the writing / reading control unit 156 causes
When the control signal for writing is supplied to the semiconductor memory unit 155 and the stored information is read from the semiconductor memory unit 155, the write / read control unit 156 is used.
At least input information is input to the semiconductor memory unit 155 so that the stored information can be read from the semiconductor memory unit 155 at a transfer rate n times the normal transfer rate.
The semiconductor memory unit 155 is supplied with a control signal for reading, which is n times as fast as the control signal for writing, which is used for storing in the memory, and the transfer rate is n times the normal transfer rate read from the semiconductor memory unit 155. The reproduction information processing means 161, 162, 163, 164 performs predetermined signal processing on the above information. As a result, even when the semiconductor memory unit is used, reproduction, storage (recording in cases other than the semiconductor memory), and transfer can be performed at a speed n times faster than normal, and signal processing can be performed at this speed.

Further, according to the configuration of the editing system of the present invention described above, when the information on the input transfer rate n times the normal transfer rate is stored in the semiconductor memory unit 155, the recording information processing means 151, 152. , 153 performs a predetermined signal processing on the information of the normal transfer rate, and the write / read control unit 156 controls the semiconductor memory unit 15.
5 is supplied with a control signal for writing and the stored information is read from the semiconductor memory unit 155, the write / read control unit 156 controls the semiconductor memory unit 155.
So that the information can be read at a normal transfer rate from the semiconductor memory unit 155, at least the read control signal at a speed of 1 / n times the write control signal used when storing the input information in the semiconductor memory unit 155. Supply to. As a result, recording and transfer can be performed at a speed n times the normal speed, and a reproduction signal at the normal speed can be obtained during reproduction.

Further, in the above-described configuration of the editing system of the present invention, the information of the transfer rate n times the normal transfer rate is divided into n pieces of information by the first demultiplexer 61, and the normal transfer rate is input. Information to the second demultiplexer 75
Is divided into n pieces of information, and each of the n pieces of information from the first or second demultiplexer 61, 75 is recorded or stored in memory 78-1, 78-2, ... 78-m, 80- 1,
.. 80-m is used for recording or storing, and a plurality of pieces of information read from the recording or storing means are selectively output by the matrix switcher 65, and the recording or storing means 78-1, 78-2, ... 78-m, 80
, 80-2, ..., 80-m, n pieces of information having a transfer rate n times the normal transfer rate are converted into original information by the multiplexer 81 and output. As a result, information of a transfer rate n times the normal transfer rate is recorded or stored, information of the transfer rate n times the recorded or stored normal transfer rate is read, and the transfer rate n times the normal transfer rate is read. Information can be output.

Further, according to the configuration of the editing system of the present invention described above, the first demultiplexer 61, the recording or storing means 78-1, 78-2, ... 78-m, 80.
-1, 80-2, ... 80-m and the first or second demultiplexer 6 between the matrix switcher 65
1 and 75, recording or storage means 78-1, 78-2,
... 78-m, 80-1, 80-2, ... 80
As many buses 62-1 and 62 as the number of pieces of information from -m
-62 ..., 62-m connection, and buses 62-1 and 62
The control units 64 and 76 control the time distribution of input / output information on -2, ..., 62-m. As a result, recording, storage, reading, and the like in the recording or storage unit 22 can be efficiently performed.

Further, according to the structure of the editing system of the present invention described above, the recording or storing means 80-1, 80-2, ... 80-, which is composed of a drive having one or a plurality of disks or a semiconductor memory device. m, 78-1,
78-2, ..., 78-m record or store a plurality of information from the first or second demultiplexers 61 and 75. This makes it possible to easily and accurately perform processing such as recording or storage of a plurality of materials and editing of a plurality of recorded or stored materials.

Further, according to the configuration of the editing system of the present invention, the recording or storing means 80-1, 80-2,
... 80-m, 78-1, 78-2, ... 78
Medium or recording or storage means 80-1,
80-2, ... 80-m, 78-1, 78-2, ...
... 78-m is plural, plural recording or storage means 80-1, 80-2, ... 80-m, 78-1,
78-2, ... First area A set to 78-m
The material for editing is recorded or stored in r1, and the edited material is recorded or stored in the second area Ar2. This makes it easy to manage the material to be edited and the material that has been edited.

Further, according to the configuration of the editing system of the present invention described above, the expansion means 23-1, 23- provided between the output side of the recording or storage section 22 and the input side of the signal processing section 25.
23 ... k, the information of the transfer speed n times the normal speed from the high-speed reproducing unit 21 is temporally expanded, and the input side of the recording or storage unit 22 and the output side of the signal processing unit or The output of the signal processing unit or the input information from the outside is temporally compressed by the compression means provided between the outside and the outside. As a result, the information of the transfer speed n times the normal speed recorded or stored in the recording or storage unit 22 can be output so that it can be used in the signal processing unit 25, and the information of the transfer speed n times the normal transfer speed can be output from the recording or storage unit 22. Information can be output at the transfer rate and supplied to the high-speed recording or storage unit 26 for high-speed recording or storage.

Further, according to the configuration of the editing system of the present invention described above, the information of the transfer rate n times the normal transfer rate read from the recording or storage unit 22 is stored in the buffer memory means 91-1 and 91-2. ..... 91-n, 92-
, 92-2, ..., 92-n, 94, and the buffer memory means 91-1, 91-2 ,.
-N, 92-1, 92-2, ... The output information of the normal transfer rate from 92-n, 94 is changed in speed reproduction processing means 9
6 and 97 perform variable speed reproduction processing, and this variable speed reproduction processing means 9
Output information from 6, 97 is output means 102, 104, 9
8 and 100, and the reproduction control communication means 107 outputs the buffer memory means 91- based on the control signal from the control unit 27.
1, 91-2, ... 91-n, 92-1 and 92-
2, ... 92-n, 94, variable speed reproduction processing section 96, 9
Control 7 As a result, the information of the transfer rate n times the normal transfer rate recorded or stored in the recording or storage unit 22 can be output at the normal transfer rate.

Further, according to the configuration of the editing system of the present invention described above, when the information of the transfer rate n times the normal transfer rate read from the recording or storage unit 22 is compression-encoded, the buffer is used. Memory means 91-1
91-2, ... 91-n, 92-1, 92-2, ...
The compression decoding processing means 95 is provided between the 92-n, 94 and the variable speed reproduction processing means 97, and the compression decoding processing means 95 performs the compression decoding processing. As a result, it is possible to decode information having a transfer rate n times the normal transfer rate that is compression-coded.

Further, according to the configuration of the editing system of the present invention described above, the information of the normal transfer rate from the signal processing unit 25 or the outside is input means 111, 113, 116, 11.
8 and input means 111, 113, 116, 1
The output information from 18 is temporarily stored in the buffer memory 121, and the recording control communication means 124 controls the input means 111, 113, 116, 118 and the buffer memory 121. As a result, the normal transfer speed information recorded or stored in the recording or storage unit 22 can be output at a transfer speed n times the normal transfer speed.

Further, according to the configuration of the editing system of the present invention described above, in the case where the information of the normal transfer rate from the signal processing unit 25 or the outside is compression-encoded, it is between the input means 111, 113 and the buffer memory 121. The compression encoding processing means 120 is provided, and the compression encoding processing means 1 is provided.
The compression coding is performed at 20. As a result, the capacity of the buffer memory 121 can be reduced, the transfer rate can be improved, and the capacity per unit information (recording or storage) used in the high speed recording or storage means 26 can be minimized. .

[0053]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the editing method and system of the present invention will be described in detail below with reference to FIG. First, a case where the high speed transfer devices 21 and 26 shown in FIG. 1 are constituted by VTRs will be described as an example.

[First Embodiment]

In FIG. 1, reference numeral 20 denotes a video tape cassette as a so-called material medium in which materials to be edited are recorded, and the video tape cassette 20 is set in the high speed transfer device 21. High speed transfer machine 21
An example of a specific internal configuration will be described later with reference to FIG. 2. When the high-speed transfer device 21 is a VTR, the recording or storage medium 20 is a video tape cassette. When this high-speed transfer device 21 is a VTR, this high-speed transfer device 21 outputs a large number of video and audio signals recorded or recorded in the storage medium 20 based on a reproduction control signal Pc from a control unit 27 described later. The head scans and reproduces at high speed, and the reproduced video and audio signals are transferred at n times the normal transfer speed.

That is, in the case of the NTSC system, a tape which is run at a speed n times the normal tape running speed is usually mounted on a rotary drum which is rotated at a speed n times the normal speed. By scanning with the number of heads, the reproduced video and audio signals are transferred at a transfer speed n times the normal transfer speed.

As a result, the time axis is compressed and output by the high-speed transfer device 21, and the reproduced video and audio signals 48p, which are n times the normal transfer speed, are supplied to the temporary recording or storage device 22. It In this case, the reproduced video and audio signals 48p are digital video and audio data, but may be analog video and audio signals. When analog video and audio signals (that is, when the high-speed transfer device 21 of FIG. 1 is an analog VTR) are used, naturally these analog video and audio signals must be once converted into digital data by an AD converter.

As the digital format, for example, various digital formats such as a component digital D1 format, a composite digital D2 format, or a component or composite digital format using compression encoding can be used.

The temporary recording or storage device 22 converts the reproduced video and audio signal 48p, which is n times the normal transfer speed from the high speed transfer device 21, into a high speed recording / reproduction control signal FPc from the control unit 27 which will be described later. Based on this, recording is performed at high speed in the recording area Ar1. Here, as the recording medium used in the temporary recording or storage device 22, an optical disk (a magneto-optical disk, a write-once optical disk, an optical disk as a phase change medium), a hard disk (a fixed type or a removable removable type) Good), so-called silicon disk (using semiconductor memory as medium) or 1
It is possible to use a flexible disk capable of recording at least 20 MBytes or more of information on one disk.

At the present time, it is preferable to use a hard disk which is fast to access and has a low cost per unit capacity. However, the silicon disk is preferable in terms of the fastest access.

Area Ar of the temporary recording or storage device 22
Whether 1 is composed of a plurality of units composed of a plurality of disks and one head, or is composed of a unit composed of one disk and a plurality of heads,
Alternatively, when it is composed of one disk, one head, and an output memory, it is possible to simultaneously reproduce a plurality of recorded materials.

That is, the temporary recording or storage device 22 is
One or a plurality of materials can be recorded or stored in the area Ar1 of the temporary recording or storage device 22, and one material recorded or stored in the area Ar1 can be reproduced or a plurality of materials can be reproduced at the same time.

Further, as shown in the figure, the temporary recording or storage device 22 outputs the high-speed transfer recorded video and audio data at 60 fields / sec at the time of reading and outputs the output interface circuits 23-1, 23-2. , ...
.. has 23-k. The output interface circuits 23-1, 23-2, ...
This is necessary in order to enable processing in the video special effect mixer 25 including an ME (digital multi-effector) and an audio mixer. That is,
At the same time, the plural materials reproduced from the area Ar1 are the output interface circuits 23-1, 23-2 shown in FIG.
... is output at 60 fields / second via 23-k and is supplied to the video special effect mixer 25.

Further, as shown in the figure, the temporary recording or storage device 22 stores processed video and audio data from the video special effect mixer 25 at a transfer rate of 60 fields / sec or video and audio data from the outside. It has an input interface circuit 24 for recording or storing again in the area Ar2 of the temporary recording or storage device 22. The input interface circuit 24 temporarily records or stores video and audio data at a normal transfer rate from the video special effect mixer 25 and video and audio data from the outside.
This is necessary for recording in the second area Ar2.

The video and audio data supplied from the high speed transfer device 21 to the temporary recording or storage device 22 and recorded at high speed are read out at high speed by the high speed recording / reproducing control signal FPc from the control unit 27 and reproduced. Output interface circuits 23-1, 23-2, ... Or 23-k assigned to the video and audio data at that time
Is supplied to.

Output interface circuits 23-1, 23
The video and audio data supplied to -2, ..., Or 23-k is the k channel of the normal speed from the control unit 27 (the speed at which the reproduced video signal is 60 fields / second at the time of output in the NTSC system). Based on the minute reproduction control signal NPc, 60 fields / second are output and supplied to the video special effect mixer 25, respectively.

As described above, the video special effect mixer 25 is composed of, for example, a DME, a switcher and an audio mixer, and the output interface circuits 23-1 and 23-2.
3-2, ... Each video and audio data from 23-k, or output interface circuits 23-1, 23-
Of the video and audio data from 2, ... Or 23-k, the video data is subjected to video special effect processing,
The audio data is processed by the audio mixer. The processing for these video and audio is performed based on the effect control signal Ec from the control unit 27.

The various processed output of 60 fields / second from the video special effect mixer 25 is again supplied to the temporary recording or storage device 22, and at this time, recorded at 60 fields / second in the area Ar2 shown in FIG. It The recorded video and audio data is read out at high speed based on the high-speed recording / reproduction control signal FPc from the control unit 27, and as shown in the figure, the video and audio data 31 read out at high speed.
It is supplied to the high-speed transfer device 26 as r at a transfer rate n times 60 fields / second.

A concrete example of the internal structure of the high-speed transfer device 26 will be described later with reference to FIG.
In the case of R, the high-speed transfer device 26 records the video and audio data 31r supplied to the video tape cassette 29 at high speed based on a recording control signal Rc from a control unit 27 described later.

In the case of the NTSC system, a normal number of recording / recording tapes mounted on a rotating drum which is rotated at a speed n times the normal tape speed and rotated at a speed n times the normal speed. By sequentially scanning with the reproducing head, video and audio signals are recorded at a speed n times the normal speed. This recording speed is usually (60 fields / sec for NTSC system, 50 fields / sec for PAL system).
N seconds).

When reproduction is performed by the high speed transfer device 26, reproduction is performed at a normal reproduction speed. As a result, the time axis is expanded and output (relative to the time of recording), and is output as digital or analog as a 60 field / sec video and audio signal. If this editing system is connected to a sending system, etc., 60
The video and audio signals output at fields / second are supplied to the transmitter via the master switcher under the control of the control system of the transmission system, and are transmitted as radio waves from the antenna of this transmitter. The reproduced video and audio signals in this case are digital video and audio data, but may be analog video and audio signals.

In the above-described editing system, the control unit 27 sends various control signals as described above based on the operation of the operation unit 28 shown in FIG. 1 to the high-speed transfer device 21, the temporary recording or storage device 2.
2. It is performed by supplying the image special effect mixer 25 and the high speed transfer device 26. Although not shown, the operation unit 28 includes high-speed transfer devices 21 and 26, a temporary recording or storage device 22,
Operation keys that can directly operate the video special effect mixer 25, various keys for setting the method of reading the video and audio data recorded temporarily or in the storage device 22, editing information, an editing menu, and a high-speed transfer device. 21 and 2
It is assumed that a display unit for displaying the time code from 6 in hours, minutes, seconds, and frames is provided.

Here, the editing process of the above-described editing system will be described with the operator operating the operation unit 28, the control of the control unit 27 by this operation, and the operation of each component by this control in mind.

First, the operator loads the video tape cassette 20 as a material medium into the high-speed transfer device 21. After that, the operator operates an operation key or an operation panel (not shown) of the operation unit 28 or the high-speed transfer device 21 to cut a material to be used for editing (one or continuous image and audio data used as one material). look for.

When the head of the material cut to be used during reproduction is determined, the operator depresses the operation key of the operation unit 27 or the high-speed transfer device 21, or displays the operation unit 28 or the high-speed transfer device 21 at that time. When the time code displayed on the section is recorded electronically or on paper, etc., and when the last part of the material cut to be used during playback is also determined,
The operator, for example, presses the operation key of the operation unit 27 or the high-speed transfer device 21, or makes a note of the time code displayed on the operation unit 28 or the display unit of the high-speed transfer device 21 at that time electronically or on paper.

When a memo is made electronically, for example, when an operation key is pressed, the start and end time codes (hereinafter referred to as start time code and end time code) of material cutting are stored in a memory (not shown) of the control unit 27. Remembered. When making a memo on paper or the like, the operator inputs the memoized time code through the operation key of the operation unit 28.
Whichever method is used, the starting time code and the ending time code of the material are stored in the memory of the control unit 27.

The process of setting the tape position of the video tape cassette 20 to the position of the starting time code of the material may be manually performed by the operator operating the high speed transfer device 21,
Further, when the operator operates the operation key of the operation unit 28, the control unit 27 performs rewinding or fast-forwarding control on the high-speed transfer device 21, and the time code supplied from the high-speed transfer device 21 is held at this time. You may control so that it may be in agreement with the starting time code. Further, as the time code, VITC (Vertical Interv) is used.
Even in al Time Code, LTC (Longi)
tudinal Time Code).

After the start time code and end time code of the material are stored in the memory of the control unit 27, for example, when the operator operates an operation key for instructing the start of editing of the operation unit 28 (not shown), the control unit 27 The reproduction control signal Pc is supplied to the high-speed transfer device 21, and the high-speed recording / reproduction control signal FPc is supplied to the temporary recording or storage device 22. The high-speed transfer device 21 receives the reproduction control signal P from the control unit 27.
When c is supplied, the video and audio signals recorded in the set video tape cassette 20 are reproduced at high speed. As described above, the high-speed transfer machine 21 stores the tape traveling at n times the normal tape traveling speed on the rotary drum rotating at the rotational speed n times the normal rotational speed. By scanning with the recording / reproducing head, the reproduced video and audio signals are transferred to the temporary recording or storage device 22 at a speed n times 60 fields / second.

As a result, the video and audio signals transferred at a transfer rate n times the normal transfer rate are recorded or stored in the area Ar1 of the temporary recording or storage device 22.
In addition, without operating the operation key of the operation unit 28 indicating the start of editing, manual operation, that is, the high-speed transfer device 21 is manually reproduced, and the reproduction signal is supplied to a television monitor or the like and displayed on the screen. It is also possible to display the image and temporarily record the image or manually record it on the storage device 22 by operating the operation unit 28 while monitoring the image. Of course, manual operation (recording start, recording end) while monitoring is performed, so the transfer rate of the output of the high-speed transfer device 21 in this case is 60
Must be fields / sec.

Materials other than the video tape cassette 20, for example, still image materials such as camera images and graphics, and audio materials such as announcements and background music are temporarily recorded or stored in the storage device 22 by operating the operation unit 28. It is recorded or stored in an area Ar1 of the temporary recording or storage device 22 from an external input terminal (not shown) and is used for editing like other materials. These external materials,
Either the temporary recording of the material obtained by reproducing the video tape cassette 20 or the recording into the storage device 22 may be performed first.

Area Ar of the temporary recording or storage device 22
After all materials are recorded or stored in 1, the operation unit 2
8, the control unit 27, the temporary recording or storage device 22, and the video special effect mixer 25 are used for editing. When the operator operates an operation key for designating a certain reproduction pattern on the operation unit 28, a command assigned to the operation key from the control unit 27 to the temporary recording or storage device 22, for example, slow motion reproduction or quick motion reproduction. Various reproduction commands such as are supplied. Commands indicating reproduction at various reproduction speeds are output from the output interface circuits 23 of the temporary recording or storage device 22.
, 23-2, ..., 23-k, the output interface circuits 23-1, 23-2 ,. The material read out at high speed from the area Ar1 of the temporary recording or storage device 22 is output at the base speed.

This output is supplied to the video special effect mixer 25. The image special effect mixer 25 is supplied with an effect control signal Ec supplied from the control unit 27 when the operator operates the operation unit 28. The effect control signal Ec is a signal for synchronizing the effect control with the transfer timing of the video and audio data output from the temporary recording or storage device 22.

The video and audio data processed by the video special effect mixer 25 is again temporarily recorded or stored in the storage device 2.
2 at a transfer rate of 60 fields / second and is recorded or stored in the area Ar2 of the temporary recording or storage device 22 through the input interface circuit 24.

At the time when all the materials have been edited, the area Ar2 of the temporary recording or storage device 22 is
For example, the edited material is recorded or stored as one program material. The operator operates the operation unit 28
When the operation key for designating the high-speed read of is operated, the control unit 27 supplies the high-speed recording / reproducing control signal Pc to the temporary recording or storage device 22, thereby recording or recording in the area Ar2 of the temporary recording or storage device 22. The stored material is read out at high speed, and the high-speed transfer device 26
And is recorded at high speed on the video tape cassette 29 set in the high speed transfer device 26.

When the material recorded in the video tape cassette 29 is used for transmission, for example, the high-speed transfer device 26 sets the tape traveling speed of the video tape cassette to a normal value in order to output at 60 fields / sec. Play at speed. This allows high speed transfer devices 26 to 60
Field / second video and audio signals are output.

Next, the high speed transfer devices 21 and 2 shown in FIG.
6, a configuration example of the temporary recording or storage device 22, and the video special effect mixer 25 will be described with reference to FIGS.

First, the case where the high speed transfer devices 21 and 26 shown in FIG. 1 are VTRs will be described with reference to FIG. Note that FIG. 2 shows an example of a configuration in which both the high-speed transfer devices 21 and 26 can record and reproduce. Therefore,
The high-speed transfer device 21 may be composed of only the reproducing system shown in FIG. 2, and the high-speed transfer device 26 may be composed of only the recording system shown in FIG.

In FIG. 2, reference numeral 30 denotes an external input terminal in the case of the high-speed transfer device 21, and in the case of the high-speed transfer device 26, the video and audio data 31r transferred at high speed from the temporary recording or storage device 22 shown in FIG. Input terminal supplied.

Video and audio data 31r transferred at high speed through the input terminal 30 is supplied to the input interface circuit 31. The input interface circuit 31 buffers the video and audio data transferred at high speed and then outputs it.

The data from the input interface circuit 31 is supplied to the ECC (error correction code) adding circuit 33-1. The ECC adding circuit 33-1 adds an ECC to the video and audio data. This E
The video and audio data to which ECC has been added by the CC addition circuit 33-1 is supplied to a CHCOD (channel coding) circuit 34-1 and subjected to recording modulation processing (digital modulation processing).

This channel coding circuit 34-1
The video and audio signals that have been subjected to the recording and modulation processing in 3 are transmitted through the recording and amplifying circuit 35-1 to the movable contact 3 of the switch 36-1.
6c is supplied.

One fixed contact 3 of this switch 36-1
6a is connected to the primary side of the rotary transformer 37-1,
The other fixed contact 36b of the switch 36-1 is connected to the primary side of the rotary transformer 37-2.

This switch 36-1 changes the movable contact 36c into one or the other fixed contact 36a based on a switching signal SW1 from a system controller 50 described later.
Alternatively, the recording / reproducing heads 38-1, 3 are connected to 36b.
8-2 is switched. The controller 40 controls the tape transport unit including the rotary transformer 37-1, a tape loading mechanism (not shown), and the recording / reproducing head 38-1.

Therefore, at the time of recording, the video and audio signals from the recording / amplifying circuit 35-1 pass through the fixed contact 36a or 36b of one or the other of the switch 36-1 and the rotary transformers 37-1 and 37-2, respectively. It is sequentially supplied to the recording / reproducing heads 38-1 and 38-2 via the recording / reproducing heads 38, and is recorded on the magnetic tape 39 so as to sequentially form inclined tracks.

The recording / reproducing heads 38-1 and 38-2 are
The recording / reproducing heads 38-1 and 38-2 are attached so as to face each other on a rotating drum (not shown) and to have an equal interval. Here, the recording / reproducing head 38-
The numbers of 1 and 38-2 are the data transfer rate under the condition that the magnetic tape 39 is run at n times the normal running speed and the rotation speed of the rotating drum is set to the rotation speed n times the normal rotation speed. Is set to be n times the normal transfer rate, the normal number (for example, 2) is set.

At the time of recording, the magnetic tape 39 is run at n times the normal running speed, and the rotational speed of the rotating drum (not shown) is set to n times the normal rotating speed.

In this example, since the recording / amplifying circuit 35-1 is supplied with the video and audio data to be recorded from the channel coding circuit 33-1, each recording / reproducing head 3
8-1 and 38-2 are sequentially supplied with the recording current by the recording amplifier circuit 35-1.

The recording data recorded on the magnetic tape 39 is sequentially reproduced by the recording / reproducing heads 38-1 and 38-2. Similarly to the above, the traveling speed of the magnetic tape 39 is n times the normal traveling speed, and the rotational speed of the rotary drum is n times the normal rotational speed. Can be

The reproduction signals from the recording / reproducing heads 38-1 and 38-2 are supplied to rotary transformers 37-1 and 37-2.
Fixed contact 3 on one side and the other side of switch 36-1 via
6a and 36b are sequentially supplied (reproduction order).
The switch 36-1 is supplied with the switching signal SW1 from the system controller 50 as in the recording. As a result, the switch 36-1 connects the movable contact 36c to one or the other fixed contact 36a or 36b.

Therefore, the reproduced signals sequentially reproduced are fixed contacts 36a or 3 on one side or the other side of the switch 36-1.
6b, the data extraction circuit 4 via the reproduction amplification circuit 42-1
3-1 are sequentially supplied. This data extraction circuit 43-1
Extracts the clock signal from the reproduction signal supplied from the reproduction amplifier circuit 42-1 and extracts the video and audio signals by the extracted clock signal. The video and audio data extracted by the data extraction circuit 43-1 is supplied to the CHDEC (channel decoding) circuit 44-1.

Channel decoding circuit 44-1
Demodulates the video and audio signals (digitally modulated) from the data extraction circuit 43-1 to obtain the original video and audio data, and supplies the demodulated video and audio data to the error correction circuit 45-1. .

The error correction circuit 45-1 performs error correction processing on the video and audio data on the basis of the ECC added to the video and audio data supplied from the channel decoding circuit 44-1. Output interface circuit 4 for video and audio data
Supply to 7. Here, when error correction is performed using the ECC added to the video and audio data, error correction processing is performed on the data that cannot be completely corrected, and the data closest to the original data is restored.

The output interface circuit 47 receives the video and audio data 46 supplied from the error correction circuit 45-1.
O1 is buffered and then output. The output 46O1 is output from the output terminal 48 and is supplied to the temporary recording or storage device 22 as the video and audio data 48p in the case of the high-speed transfer device 21 shown in FIG.

By the way, in the case of the high-speed transfer device 26, if the high-speed transfer device 26 is to be used for output in the sending system, it is determined that the reproduced video and audio data are compressed data. For example, a cassette auto changer, a master switcher, and a transmitter must have a circuit for extending the time axis. Therefore, in order not to modify the system of the next stage, the error correction circuit 45-1
It is necessary to time-expand the output of the.

That is, when the configuration shown in FIG. 2 is applied to the high-speed transfer device 26 shown in FIG. 1, the error correction circuit 45-
As shown in the figure, the output terminal of 1 may be connected to the input terminal of the output interface circuit 40, and the output interface circuit 40 converts the data into the original data for output. With this configuration, it is possible to connect a television monitor or the like to the output interface circuit 30 and monitor the image projected on the screen.

Although not shown, reference numeral 49 is an operation unit having, for example, a display unit and an operation key group. By operating the operation section 49 or by supplying the recording / reproducing control signal from the control section 27 shown in FIG. A control signal is supplied to the synchronization signal generation circuit 52.

As a result, the system clock / synchronization signal generating circuit 52 is operated by the input interface circuit 3 described above.
1, ECC addition circuit 33-1, channel coding circuit 34-1, data extraction circuit 43-1, channel decoding circuit 44-1 and error correction circuit 45-1,
The output interface circuit 47 is supplied with necessary system clocks and synchronization signals, respectively.

As can be seen from the above description, in the above example, the transfer rate was explained as being four times the normal transfer rate, but it is also possible to vary the transfer rate. That is, the transfer rate required by the operator can be set to the transfer rate designated by the operation key of the operation unit 28 shown in FIG.

For this, a method of varying the number of rotations of the rotary drum according to the designated transfer speed can be adopted. This method has an advantage that the number of recording / reproducing heads mounted on the rotating drum can be minimized (normal number of heads). In any case, in order to change the transfer rate in this way, the system clock of the circuit must be changed in conjunction with this, but the system clock is a known VCO (voltage controlled oscillator) or high frequency. This can be easily realized if there is a crystal oscillator and frequency divider, or a low-frequency crystal oscillator and multiplier.

Further, in this method, since the number of heads is fixed, the transfer speed can be changed by changing the rotation speed of the rotary drum and the running speed of the magnetic tape 39. That is, the running speed of the magnetic tape 39 and the rotation speed of the rotary drum may be determined so that the number of tracks to be recorded or reproduced in the same time as normal reproduction or recording can be n times the normal number.

Next, referring to FIG. 6 to FIG. 8 in sequence, FIG.
The operation of the high speed transfer device 21 or 26 shown in FIG.

It will be described with reference to FIG. In FIG. 6, FD indicates frame data, TD indicates track-corresponding data, and TP indicates a track pattern, respectively. Is omitted), P + 4, P +
.. are transferred in one frame period as real time. Dn / F is data for one frame, T
The number in parentheses attached to Dn indicates the head number,
Tn / F indicates a track for one frame, the solid arrow in the upper part of the figure indicates the transfer order, and the solid arrow in the lower part indicates the tape running direction (in this example, quadruple speed running) Tn is one frame period in real time The tracks recorded in are shown respectively.

First, focusing on the frames P and P + 1, the frame P has the first tracks TD1 (H1) and TD2.
(H2), ... TD8 (H2), ... TD12
(H2). That is, the first track correspondence data TD1 of the frame P is "H1", that is, recorded by the recording / reproducing head 38-1 shown in FIG. 2, and the second track correspondence data TD2 is "H2", that is, in FIG. Recorded by the recording / reproducing head 38-2 shown in the ..., The eighth track corresponding data TD8 is "H2", that is, the recording / reproducing shown in FIG.
The twelfth track-corresponding data TD12 is recorded by the reproducing head 38-2, and is recorded by "H2", that is, the recording / reproducing head 38-2 shown in FIG.

Subsequently, the first track correspondence data TD1 of the frame P + 1 is "H1", that is, recorded by the recording / reproducing head 38-1 shown in FIG. 2, and the second track correspondence data TD2 is "H2", that is, , Is recorded by the recording / reproducing head 38-2 shown in FIG. 2, ... The twelfth track corresponding data TD12 is “H2”, that is, is recorded by the recording / reproducing head 38-2 shown in FIG. . That is, in this example, the recording / reproducing head 38-
1 and 38-2 record data corresponding to the tracks 6 times each to form a track. Of course, this is because the VTR tape format in this example is 1 frame 1
This is because it has two tracks. Therefore, when the number of tracks in one frame is eight, the recording / reproducing heads 38-1 and 38-2 record track-corresponding data four times in one frame to form a track.

As a result, the tracks T1, T2, ...
.T12 is formed, and as shown by the dots in the figure, tracks T1, T2, ...
2 is formed. Of course, twelve tracks T1, T2, ... T12 of each frame are recorded within one frame / 4 in real time. Therefore, the track pattern TP
All the tracks T1 to T12 shown in (1) (48 tracks in total in the figure) are recorded during one frame of real time.

Next, referring to FIG. 7, data is transferred to the high-speed transfer device 26 shown in FIG. 2 at a speed four times the normal transfer speed.
Two recording / reproducing heads 38-1, 3 of the high-speed transfer device 26
The operation of recording video and audio data in 8-2 will be described. The symbols of the signals shown in FIG. 7 are also shown in FIG. 2 for the sake of clarity.

31r is an input (high-speed transfer data) of the input interface circuit 31 of FIG. 2, 32I1 is an EC of FIG.
The input of the C addition circuit 33-1, 35O1 is the recording amplification output of the recording amplification circuit 35-1 of FIG. 2, SW1 is the switching signal from the system controller 50 supplied to the switch 36-1 of FIG. 2, and 38r1 is the switching signal of FIG. 2 is a recording signal of the recording / reproducing head 38-1 and 38r2 is a recording signal of the recording / reproducing head 38-2 in FIG.

As the switching signal SW1, the recording / reproducing head 38 selected depending on the high level "1" and low level "0" states of the switching signal SW1.
The numbers "1" and "2" for indicating -1, 38-2 are added.

First, in the input interface circuit 31 shown in FIG. 2, the video and audio having a transfer rate four times the normal transfer rate from the temporary recording or storage device 22 shown in FIG. The data 31r is supplied. In FIG. 7, the code T shown in the video and audio data 31r, respectively.
12D, T1D, T2D, ...
Track, first track, second track, ... third
The configuration data of each track is shown.

The video and audio data 31r is transferred to the ECC adding circuit 33-1 via the input interface circuit 31.
Is supplied to. The output of the input interface circuit 31 becomes video and audio data 32I1 as shown in FIG. The video and audio data 32I1 is input to the ECC adding circuit 33-1.

This video and audio data 32I1 is ECC
ECC is added by the adding circuit 33-1 and digitally modulated by the channel coding circuit 34-1 and supplied to the amplifying circuit 35-1 for recording and amplification. The output 35O1 of the recording amplification circuit 35-1 is delayed from the input video and audio data 32I1 of the ECC addition circuit 33-1 as shown in FIG. This delay time is EC
C addition circuit 33-1 and channel coding circuit 3
This is due to the processing in 4-1. For example, the video and audio data 32I1 changes from this shaded portion to the shaded portion of the output 35O1 of the recording amplification circuit 35-1 as shown by the solid arrow. Therefore, the delay time for each video and audio data is the time indicated by the symbol RD in the figure. The video and audio signal (current signal) 35O1 output from the recording / amplifying circuit 35-1 is the movable contact 36c of the switch 36-1.
Is supplied to.

From system controller 50 to switch 3
When the switching signal SW1 supplied to 6-1 is high level "1", the switch 36-1 connects the movable contact 36c to one fixed contact 36a, and when it is low level "0", the switch 36-1 is The movable contact 36c is connected to the other fixed contact 36b. Therefore, the switching signal SW1
As shown above, the video / audio data T1D of the first track output from the recording / amplifying circuit 35-1 is recorded by the recording / reproducing head 38-1 so as to form an inclined track on the magnetic tape 39, and is recorded. Video and audio data T2D of the second track output from the amplifier circuit 35-1
Is recorded by the recording / reproducing head 38-2 so as to form an inclined track on the magnetic tape 39. Similarly, the recording / reproducing head 38-1 or 38-2 is selected by the switching signal SW1, and the selected recording / reproducing head 38-1 or 38-2 causes the video and audio data T3D on and after the third track. .About.T12D are recorded alternately on the magnetic tape 39 so as to form inclined tracks.

Next, the operation of reproducing the video tape cassette 20 by the high speed transfer device 21 shown in FIG. 2 will be described with reference to FIG. In FIG. 8, the two recording / reproducing heads 38-1 of the high-speed transfer device 21 shown in FIG.
And 38-2, the operation of reproducing the video and audio data and transferring the reproduced data at a transfer rate four times the normal transfer rate will be described. The reference numerals of the signals shown in FIG. 8 are also shown in FIG. 2 for the sake of clarity.

In FIG. 8, 38p1 is a reproduction signal reproduced by the recording / reproducing head 38-1 shown in FIG.
2 is a reproduction signal reproduced by the recording / reproducing head 38-2 shown in FIG. 2, SW1 is a switching signal from the system controller 50, 42I1 is an input of the reproduction amplifier circuit 42-1 and 46O1 is an error correction circuit 45-1. Output of 48
p is the output of the output interface circuit 47.

From system controller 50 to switch 3
When the switching signal SW1 supplied to 6-1 is high level "1", the switch 36-1 connects the movable contact 36c to one fixed contact 36a, and when it is low level "0", the switch 36-1 is The movable contact 36c is connected to the other fixed contact 36b. Therefore, the switching signal SW1
As indicated by the numbers "1" and "2" attached above, when the switching signal SW1 is at the high level "1", the reproduction signal 38p1 from the recording / reproducing head 38-1 is supplied to the reproduction amplifier circuit 42-1. When the switching signal SW1 is at low level "0", the reproduction signal 38p2 from the recording / reproducing head 38-2 is supplied to the reproduction amplifier circuit 42-1.

As shown in FIG. 8, the reproduction signal 42I1 is supplied to the reproduction amplifier circuit 42-1.
-1 is output after being reproduced and amplified, and is supplied to the data extraction circuit 43-1.
At, the clock signal is regenerated and data is extracted with the regenerated clock signal. The video and audio signals from the data extraction circuit 43-1 are supplied to the channel decoding circuit 44-1 and demodulated in this channel decoding circuit 44-1 to be the original video and audio data, and the error correction of the next stage is performed. It is supplied to the circuit 45-1 and subjected to error correction processing as described above. The video and audio data 46O1 that has undergone the error correction processing is supplied to the output interface circuit 47.

PD represents a delay time due to the processing time in the channel decoding circuit 44-1 and the error correction circuit 45-1.

The compressed video and audio data 46O1 is supplied to the output interface circuit 47. The compressed video and audio data 46O1 supplied to the output interface circuit 47 is once buffered here, and then output from the output terminal 48 as high-speed video and audio data 48p and stored in the temporary recording or storage device 22 shown in FIG. Supplied.

As can be seen from FIG. 8, the compressed video and audio data indicated by diagonal lines are the first track corresponding data T1.
D, fifth track-corresponding data T5D, and ninth track-corresponding data T9D. Compressed video and audio data indicated by dots indicate second track-corresponding data T2D, sixth track-corresponding data T6D, and tenth track-corresponding data T10D. The compressed video and audio data indicated by diagonal lines, which are the reverse of the compressed video and audio data of the first, fifth, and ninth tracks, indicate third-track corresponding data T3D, seventh-track corresponding data T7D, and eleventh-track corresponding data T11D. The white and white (indicating that there is no pattern) compressed video and audio data indicates the fourth track corresponding data T4D, the eighth track corresponding data T8D and the twelfth track corresponding data T12D.

Next, an example of the structure of the temporary recording or storage device 22 shown in FIG. 1 will be described with reference to FIG.

Reference numeral 60 denotes an input terminal to which the high speed video and audio data 48p from the high speed transfer device 21 shown in FIG. 1 is supplied. The high speed video and audio data 48p reproduced through this input terminal 60 is a demultiplexer. 61 is supplied. The demultiplexer 61 converts the high-speed video and audio data 48p into, for example, data for every one second (transfer speed of 4 times,
Further, in the case of the NTSC system, it is expanded by dividing it into 240 fields, and each of the divided and expanded 8-bit video and audio data 61p1, 61p2, ... 61pm is obtained, and these video and audio data 61p1, 61p2 ...
・ ・ ・ 61 pm on buses 62-1, 62-2, ... 6
Video and audio data 8 for recording or storage via 2-m
.. 80rm as 0r1, 80r2, ..., 80rm, respectively. Here, the buses 62-1, 62-2, ...
62-m is 8-bit video and audio data 62p
.., 62 pm, each of which is composed of eight bit lines.

Disk controllers 80-1, 80-
2, ... 80-m is based on a disk access control signal from a system controller 76 which will be described later.
, 62-m, video and audio data 80r1, 80r2, ..., 80rm from disk drives 78-1, 78-2 ,.
Supply to.

Here, the disk drives 78-1, 78
-2, ..., 78-m has been described above, but can be configured with a drive using a hard disk, an optical disk, or a flexible disk having a recording capacity of at least 20 Mbytes or more as a medium. In addition, the disk controller 80-
80-m are disk drives 78-1, 78-2, ... 78-m based on disk access control signals from the system controller 76, respectively.
Writing to the medium set to No. 1 and reading of data from the medium set to the disk drives 78-1, 78-2, ... 78-m are performed.

Further, the system controller 76 supplies recording / reproducing control signals supplied from the control section 27 shown in FIG. 1 via the input / output terminal 77, output interface circuits 23-1, 23-2, ... .. disk access control signals based on the data reproduction control signal from 23-k and the data recording control signal from the input interface circuit 24.
In addition to supplying to 80-m, output interface circuit 23
-1, 23-2, ... 23-k is a reproduction control signal,
A recording control signal is input to the input interface circuit 24, a control signal is input to the demultiplexer 75 and the multiplexer 81, and a bus controller 64 for controlling the buses 62-1, 62-2, ... The flag FLG is supplied with a selection control signal to a matrix switcher 65, which will be described later.

Here, recording / supplied from the control unit 27
The reproduction control signal transfers the high-speed video and audio data 48p supplied to the demultiplexer 61 to the disk drive 78-
1, 78-2, ..., 78-m, the operator operates the operation unit 28 shown in FIG. 1 to start and end the start frame while watching the material necessary for editing. This is done by specifying the frame with time code input. The media set in the disk drives 78-1, 78-2, ... 78-m of the temporary recording or storage device 22 are subjected to such a plurality of processes linked to the operation of the operator. , Multiple materials to be edited are disk drives 78-1, 7
8-2, ..., 78-m are respectively recorded or stored in the media.

Now, the disk drives 78-1, 78-
2, ... After the video and audio data transferred at high speed to the medium set to 78-m is divided and recorded for 1 second as described above, the data is input via the input / output terminal 77. When the recording / reproduction control signal supplied from the control unit 27 shown in 1 indicates reproduction, the system controller 76
Sends a disk access control signal to the disk controller 8
0-1, 80-2, ..., 80-m, respectively.

Disk controllers 80-1, 80-
80-m controls the disk drives 78-1, 78-2, ... 78-m based on the disk access control signal from the system controller 76,
Each disk drive 78-1, 78-2, ... 78
The video and audio data recorded from the medium set to -m is read, and the read video and audio data 80p1, 80p2, ...
2-1, 62-2, ..., 62-m are supplied respectively.

Buses 62-1, 62-2, ... 62-
video and audio data 80p1, 80p supplied to m
80 pm are supplied to the matrix switcher 65, respectively. The matrix switcher 65 is based on a selection control signal from the system controller 76, and supplies video and audio data 80p1, 80p2, ...・
・ Select 80 pm.

The selection method is as follows.
8-bit parallel video and audio data 80p1, 80p2, ...
・ 80 pm is selected in the time slot and output interface circuits 23-1, 23-2, ...
Selectively feed -k. Therefore, the video and audio data supplied to the output interface circuits 23-1, 23-2, ... 23-m is 8 bits × m pieces.

Video and audio data 80p1, 80p2, ..., 80p selected by the matrix switcher 65
m is the output interface circuit 23-1, 23-2, ...
... 23-k are supplied respectively. That is, the matrix switcher 65 includes the buses 62-1, 62-2, ...
2-m video and audio data 8 supplied via m
Let 0p1, 80p2, ..., 80pm be the number k to be used in the video special effect mixer 25 shown in FIG. Of course, the above-mentioned "n", "m" and "k" may be equal to each other, but as a merit, the image special effect mixer 25 currently used can be used.

Output interface circuits 23-1, 23
-2, ... 23-k converts k video and audio data from the matrix switcher 65 into 60 fields / sec and outputs the respective output terminals 67-1, 67-2 ,.
It is supplied to the video special effect mixer 25 shown in FIG. Also, these output interface circuits 2
The reproduction control from the control unit 27 shown in FIG. 1 is performed via the input / output terminals 68-1, 68-, ... 68-k to the respective 3-1, 23-2 ,. Signal is supplied. Further, the output interface circuits 23-1, 23-2, ...
.. 23-k respectively supply data reproduction control signals to the system controller 76.

Now, the video special effect mixer 2 shown in FIG.
The video and audio data at the normal transfer rate, which has been subjected to the special effect processing and audio processing in 5, are input to the input terminal 72.
Is supplied to the input interface circuit 24 via the.
Of course, external video and audio data at a normal transfer rate may be used. The input interface circuit 24 supplies a recording control signal to the system controller 76 based on the recording control signal supplied from the control unit 27 shown in FIG. 1 via the input / output terminal 73. The input interface circuit 24 temporarily buffers and outputs video and audio data from the video special effect mixer 25 or the outside.

The output of the input interface circuit 24 is supplied to the demultiplexer 75, which divides it into m pieces of video and audio data for each one second. The divided m pieces of data are transferred to the disk controllers 80-1, 80-, ... 80-m via the buses 62-1, 62-2 ,.
Recording video and audio data 80r1, 80r2 ,.
... Supplied as 80 rm.

Disk controllers 80-1, 80-
2, ... 80-m are buses 62-1, 62-2, ...
..... Video and audio data 80r1, 80r2 supplied from the demultiplexer 75 via 62-m ..
80 rm, based on the disk access control signal from the system controller 76, the disk drive 78-1,
Recording is performed on each of the media set to 78-2, ..., 78-m.

Here, the relationship between the areas Ar1 and Ar2 of the temporary recording or storage device 22 shown in FIG. 1 and the disk drives 78-1, 78-2, ... 78-m shown in FIG. 3 will be described. . There are two ways of thinking about the area, one is for each disk drive 78-1, 78-2,
... The idea is to divide the media set in 78-m into areas Ar1 and Ar2.
One is the disk drive 78-1, 78-2, ...
There is an idea of dividing 78-m into areas Ar1 and area Ar2.

Although similar to the former idea, for example, when a hard disk is used as a medium and the hard disk is composed of a plurality of disks, the areas Ar1 and Ar2 may be set for each disk. , The areas Ar1 and Ar2 may be set for each cylinder, and the disk controllers 80-1, 80-2, ...
80-m is provided with a table, and the address of the video and audio data supplied from the demultiplexer 61 and the address of the video and audio data obtained by the processing by the video special effect mixer 25 are stored in the table. You can

In any case, at the time of editing, the material to be edited and the material obtained by the editing exist, and the material to be edited may not be unnecessary by one-time editing. Therefore, in order to provide the operator with a convenient editing environment (for example, when re-editing), the material to be edited and the state of automatically managing the material obtained by the editing will be necessary. Therefore, the disk drive 78
, 78-2, ... 78-m, when the operator gives a name to the material for each editing unit by performing an input operation on the operation unit 28, a display unit (not shown on the operation unit, of course) 28 may be provided), and various information such as the name of each material and the data length (time data etc.) may be displayed.

That is, even if the material to be edited is not recorded or stored in the disk drives 78-1, 78-2, ... 78-m in units of editing material, the operator can perform editing work in units of editing material. You will be able to think and operate.

Further, the disk controllers 80-1, 8
For reproduction by 0-2, ..., 80-m, the operator operates a predetermined operation key of the operation unit 27, or clicks an icon for command execution displayed on the display unit with a mouse. The selection of materials and the method of reproduction may be specified by the. For example, slow-motion reproduction can be performed by intermittently reading video and audio data from media set in the disk drives 78-1, 78-2, ... 78-m, and once every several frames. As described above, by skipping and reading the frame, the so-called quick motion or the like can be reproduced.

Now, the operator operates the operating section 28 to cause the control section 27 to transfer the edited video and audio data at high speed.
When the TR 26 issues a recording command, the system controller 76 is supplied with a recording / reproducing control signal from the control unit 27. The system controller 76 is the control unit 2
A disk access control signal is supplied to the disk controllers 80-1, 80-2, ...

Each disk controller 80-1, 80-
80-m controls the disk drives 78-1, 78-2, ... 78-m based on the disk access control signal from the system controller 76. As a result, the disk drives 78-1, 78-2, ...
From 78-m, video and audio data subjected to special effect processing and audio processing by the video special effect mixer 25 are read. At this time, the disk access control signal controls the reading at a speed n times the reading speed that is the normal transfer speed.

Disk drives 78-1, 78-2, ...
The video and audio data 80p1, 80p2, ..., 80pm read out from the 78-m are supplied to the multiplexer 81, respectively, and are converted into the original continuous data in the multiplexer 81, and the high-speed video and audio data. The data 81p is output from the output terminal 82, supplied to the high-speed transfer device 26 shown in FIG. 1, and recorded so as to form an inclined track on the magnetic tape of the video tape cassette set in the high-speed transfer device 26.

By the way, due to the limitation of the transfer speed of the currently known disk drive, a plurality (m) of disk drives 78-1, 78-2, ... If a large-capacity temporary recording or storage device 22 is used, it can be configured with m = 1. In this case, it is not necessary to use the demultiplexers 61 and 75 and the multiplexer 81 shown in FIG.

Next, referring to FIG. 9 and FIG.
The operation of the temporary recording or storage device 22 shown in FIG. FIG. 9 shows the temporary recording or storage device 2 shown in FIG.
2 is a timing chart for explaining the high-speed transfer recording operation, FIG. 10 is the temporary recording or storage device 2 shown in FIG.
6 is a timing chart for explaining the high-speed transfer reproduction operation of No. 2. In the following description, a case where the transfer rate is four times the normal transfer rate will be described as an example. That is, this is a case where eight recording / reproducing heads are used in the high-speed transfer devices 21 and 26 shown in FIG.

First, FIG. 9 will be described. 9, 48p is high-speed video and audio data supplied from the high-speed transfer device 21 shown in FIG. 1 to the demultiplexer 61 through the input terminal 60 shown in FIG. 3, 61p1, 61p2, 6p.
1p3 and 61p4 are video and audio data divided by the demultiplexer 61, and 62p1, 62p2, and 62p3.
And 62p4 are expanded in the time axis by the demultiplexer 61, and then the buses 62-1, 62-2, 62-3 and 62.
-4, video and audio data, 80r1, 80
r2, 80r3 and 80r4 are buses 62-1 and 62, respectively.
Image data and audio data supplied to the disk controllers 80-1, 80-2, 80-3, and 80-4 for recording via -2, 62-3, and 62-4.

When the high-speed video and audio data 48p (the entire material is cut in FIG. 9) from the high-speed transfer device 21 shown in FIG. 1 is supplied to the demultiplexer 61 through the input terminal 60, The demultiplexer 61 is
The high-speed video and audio data 48p is divided into units (for example, 1 second) indicated by broken lines, and the video and audio data 6 indicated by diagonal lines 6
1p1, video and audio data 61p2 shown by dots, video and audio data 61p3 shown by diagonal lines opposite to the video and audio data 61p1, solid (meaning that there is no pattern)
The video and audio data 61p4 shown by are obtained respectively. Here, it should be noted that in this example, the high-speed video and audio data 48p is cut for 12 seconds, and since it is divided by 1 second, the transfer speed is 4 times, so 1 second Thus, 240 fields of video and audio data are included.

These video and audio data 61p1, 6
1p2, 62p3, and 61p4 are time-axis expanded in the demultiplexer 61, and the time-axis expanded video and audio data 62p1, 62p2, 62p3, and 62, respectively.
p4, as indicated by the solid arrow, buses 62-1 and
62-2, 62-3 and 62-4, respectively.

Then, the time axis is expanded and the bus 62-
The video and audio data 62p1, 62p2, 62p3 and 62 supplied to the Nos. 1, 62-2, 62-3 and 62-4.
p4 is the disk controller 80-1, 80-2, 8
0-3 and 80-4, the disk drive 78
It is recorded or stored on the media set to -1, 78-2, 78-3 and 78-4. FIG. 9 shows the recording or storage timing. Video and audio data 80r
1, 80r2, 80r3 and 80r4 are disk drives 78-1, 78- at the timings shown in FIG.
It is recorded or stored in the media set in Nos. 2, 78-3 and 78-4, respectively.

Next, description will be made with reference to FIG. This Figure 1
0, 80p1, 80p2, 80p3 and 80p
Reference numeral 4 designates the input interface circuit 24 from the video special effect mixer 25 shown in FIG.
To the buses 62-1 and 62-, after being supplied to the demultiplexer 75 and converted into m video and audio data in the demultiplexer 75.
It is supplied to the disk controllers 80-1, 80-2, 80-3 and 80-4 via 2, 62-3 and 62-4, and further these disk controllers 80-1, 80-
2, 80-3 and 80-4 by disk drive 7
8-1, 78-2, 78-3 and 78-4 are recorded or stored in the media set and then read by the disk controllers 80-1, 80-2, 80-3 and 80-4. Video and audio data, or video and audio data read from the area Ar1 shown in FIG. 1, 62p1, 62p2, 62p3 and 62p4 are shown in FIG.
After reading from the area Ar1 shown in FIG.
The video and audio data 81p1, 81p2, 81p3 and 81p4 respectively supplied to 1, 62-2, 62-3 and 62-4 are supplied to the multiplexer 81 after being read from the area Ar2 shown in FIG. The video and audio data temporally compressed by being divided and stored in the multiplexer 81 and then read out at a speed four times as high as that at the time of writing, 81p is temporally compressed by the multiplexer 81 and then the original continuous data. The video and audio data output as the data to be processed are shown.

The operator operates the operation unit 28 shown in FIG. 1 to cause the control unit 27 to temporarily record or play back the material recorded or stored in the storage device 22, and store it in the video tape cassette set in the high-speed transfer device 26. When the controller 27 is notified of the instruction to transfer and record, the controller 27 supplies a recording / reproducing control signal to the system controller 76 shown in FIG.

The system controller 76 supplies the disk access control signals to the disk controllers 80-1, 80-2, 80-3 and 80-4 based on the recording / reproducing control signal from the control unit 27, and the respective disk access control signals. Plays video and audio data from the media set in the disk drives 78-1, 78-2, 78-3 and 78-4 by controlling the drives 78-1, 78-2, 78-3 and 78-4. Let This video and audio data 80p
In the case where the video and audio data 1, 80p2, 80p3 and 80p4 are read from the area Ar1, they are supplied to the data buses 62-1, 62-2, 62-3 and 62-4 and read from the area Ar2. In the case of video and audio data, it is supplied to the multiplexer 81.

In addition, in the case of performing editing by adding or inserting newly edited video and audio data to the video and audio data recorded or stored in the area Ar2, the operator operates the operation unit 28 shown in FIG. Can be done by doing. That is, if the edited video and audio data is added or inserted after being edited in the temporary recording or storage device 22, it is possible to collectively transfer and record the data to the high speed transfer device 26. In this case, a so-called seamless material tape after editing can be obtained rather than recording or storing the edited result in the high-speed transfer device 26 many times.

Data buses 62-1, 62-2, 62-3
And video and audio data 62p1, 62 from 62-4.
The p2, 62p3, and 62p4 are supplied to the multiplexer 81, and are temporarily written in the memory (not shown) of the multiplexer 81. Then, reading from the memory is performed at a speed four times as fast as the writing speed, whereby the video and audio data 81p having a transfer speed four times as high as the normal transfer speed is provided.
1, 81p2, 81p3 and 81p4 are obtained, and further converted into serial data by the multiplexer 81 and output as high-speed video and audio data 81p from the output terminal 82, and supplied to the high-speed transfer device 26 shown in FIG.

Next, referring to FIG. 4, the output interface circuits 23-1, 23-2, ... Shown in FIGS.
The configuration example of 23-k will be described.

In FIG. 4, reference numeral 91 is an input terminal to which the selected video and audio data (8 m) from the matrix switcher 65 shown in FIG. 3 is supplied, and a FIFO (first-in · First out) 92-1, 92-2, ... 92-m are supplied with video and audio data from the matrix switcher 65, respectively.

91-m are decoding and writing control circuits, and these decoding and writing control circuits 91-1, 91-2 ,.
m is a flag FLG obtained by decoding video and audio data (8 bits × m pieces) supplied through the input terminal 91, respectively.
1, FLG2, ... FLGm is obtained and flag FLG is obtained.
, FLG2, ..., FLGm are supplied to the FIFOs 92-1, 92-2, ..., 92-m together with the write control signal. Therefore, each FIFO 92-1 and 92-
The video and audio data supplied via the input terminal 91 are written in 2, ..., 92-m.

FIFO 92-1, 92-2, ... 9
The video and audio data written in 2-m is read by a read control signal from the read control circuit 94. The read control circuit 94 supplies a read control signal to each FIFO 92-1, 92-2, ... 92-m based on the buffering control signal from the reproduction control communication controller 107.

This playback control communication controller 107
A buffering control signal, an audio variable speed reproduction control signal and a video variable speed reproduction control signal are generated based on the reproduction control signal from the control unit 27 shown in FIG. A data reproduction control signal is supplied to the system controller 76 of the recording or storage device 22.

Reference numeral 95 denotes a compression / decoding processing circuit. The compression / decoding circuit 95 has FIFOs 92-1 and 92-2 ,.
··········································································································· When the form of compression is DCT (discrete cosine transform), quantization, or variable length coding such as run length or Huffman, the compression decoding circuit 95 includes a decoding circuit, an inverse quantization circuit, and an IDCT (inverse discrete cosine). Conversion) circuit. Of course, the same applies to wavelet conversion and ADRC (adaptive dynamic range coding).

The variable speed reproduction processing circuit 97 performs variable speed reproduction processing of the video data supplied from the compression / decoding processing circuit 95 or the bus 93. When the variable speed reproduction processing circuit 97 is provided with a memory, the video data is written into the memory at a high speed on the basis of a transfer speed which is four times the normal transfer speed, and then read from the memory at a speed of 1/4 of the write speed. , The read video data is output to the output interface circuit 98 {for example, RS232C, RS422, SCSI (Small C
computer Systems Interfac
e) various serial or parallel interface circuits such as interfaces)}. The output interface circuit 98 formats the video data from the variable speed reproduction processing circuit 97 into a format that can be used by the video special effect mixer 25, and supplies the processed video data to the video special effect mixer 25 shown in FIG. .

On the other hand, 100 is a DA converter,
The DA converter 100 converts the video data from the variable speed reproduction processing circuit 97 into an analog video signal and outputs the analog video signal via an output terminal 101. The analog video signal output from the output terminal 101 can be used, for example, when the device used in the next stage has analog specifications or is supplied to a television monitor (not shown) and displayed as an image on the screen. For example, it can be used for monitoring.

The variable speed reproduction processing circuit 96 performs variable speed reproduction processing on the audio data supplied from the bus 93. When the variable speed reproduction processing circuit 96 is provided with a memory, the audio data is written into the memory at a high speed with a transfer speed four times the normal transfer speed as a reference, and then read from the memory at a speed of ¼ of the write speed. The read audio data is supplied to the output interface circuit 102. Output interface circuit 102 {eg RS232C, RS422, SCSI
(Small Computer Systems I
various serial or parallel interface circuits) such as an interface)) to transfer the video data from the variable speed reproduction processing circuit 96 to the video special effect mixer 25.
1, and supplies the processed audio data to the video special effect mixer 25 shown in FIG. 1 through the output terminal 103.

On the other hand, 104 is a DA converter,
The DA converter 104 converts the audio data from the variable speed reproduction processing circuit 96 into an analog audio signal and outputs it through the output terminal 105. The analog audio signal output from the output terminal 105 can be used, for example, when the device used in the next stage has analog specifications, or is supplied to an audio amplifier (not shown), and is output from a speaker connected to the audio amplifier. It is possible to use it as an output for monitoring.

Next, referring to FIG. 11, the temporary recording or storage device 22 shown in FIG. 3 and the output interface circuits 23-1, 23-2, ... 23-k shown in FIG.
The operation of will be described. Also in this example, a case where the transfer speed is set to four times the normal transfer speed will be described.

In FIG. 11, FLG is the system controller 76 to the bus controller 64 shown in FIG.
62p indicating the bus transfer control flag supplied to
1, 62p2, 62p3 and 62p4 are video and audio data on the buses 62-1, 62-2, ... 62-m shown in FIG. 3, respectively, and these video and audio data 62p1,
The symbols shown in 62p2, ..., 62pm respectively represent reproduced data and recorded data, and FLG1, FLG2, FLG
3 and FLG4 are the decoding and writing control circuits 91-1, 91-2, ..., 91-m shown in FIG. 4, respectively, and have video and audio data 62p1, 62p2, 62p3 and 6 respectively.
Shows the flags obtained by decoding 2p4,
92I1, 92I2, 92I3 and 92I4 are respectively shown in FIG.
9-2 shown in FIG.
m indicates video and audio data supplied to and written in m, and 93p is video and audio data output from the bus 93.

As shown in FIG. 3, the flag FLG is supplied from the system controller 76 to the bus controller 64. Each low-level "0" period in the flag FLG is a time slot. In this example, the fourth and eighth time slots are recording time slots, and the other time slots are reproduction time slots.

That is, in FIG. 11, the bus 62-
Transfer contents and disk controllers 80-1, 80-2, 80-3 in 1, 62-2, 62-3 and 62-4
And disk drives 78-1 and 78- by 80-4
2, 78-3 and 78-4 are shown. That is, in the disk drive 78-1, the video and audio data Dp11 is reproduced in the first reproduction time slot, the video and audio data Dp21 is reproduced in the next reproduction time slot, and the video and audio data Dpk1 is reproduced in the next reproduction time slot. 62-1 and the video and audio data Dr1 supplied from the input interface circuit 24 in the next recording time slot is recorded in the medium set in the disc drive 78-1 and the video and audio data are recorded in the next reproduction time slot. The audio data Dp15, the video and audio data Dp24 in the next reproduction time slot, the video and audio data Dpk5 in the next reproduction time slot, and the bus 6 are reproduced.
2-1, and the video and audio data Dr5 supplied from the input interface circuit 24 is recorded in the medium set in the disk drive 78-1 in the next recording time slot.

In the disk drive 78-2, the video and audio data Dp12 is recorded in the first reproduction time slot, and the video and audio data Dp22 is recorded in the next reproduction time slot.
Video and audio data Dpk2 in the next playback time slot
Is reproduced and supplied to the bus 62-2, the video and audio data Dr2 supplied from the input interface circuit 24 is recorded in the medium set in the disk drive 78-2 in the next recording time slot, and the next reproduction is performed. The video and audio data Dp16 is reproduced in the time slot, the video and audio data Dp25 is reproduced in the next reproduction time slot, and the video and audio data Dpk6 is reproduced in the next reproduction time slot and supplied to the bus 62-2. The video and audio data Dr6 supplied from the input interface circuit 24 in the slot is recorded on the medium set in the disk drive 78-2.

In the disc drive 78-3, the video and audio data Dp13 is recorded in the first reproduction time slot, and the video and audio data Dp23 is recorded in the next reproduction time slot.
Video and audio data Dpk3 in the next playback time slot
Is reproduced and supplied to the bus 62-3, the video and audio data Dr3 supplied from the input interface circuit 24 is recorded in the medium set in the disk drive 78-3 in the next recording time slot, and the next reproduction is performed. The video and audio data Dp17 is reproduced in the time slot, the video and audio data Dp26 is reproduced in the next reproduction time slot, the video and audio data Dpk7 is reproduced in the next reproduction time slot, and is supplied to the bus 62-3. The video and audio data Dr7 supplied from the input interface circuit 24 in the slot is recorded on the medium set in the disk drive 78-3.

In the disk drive 78-4, the video and audio data Dp14 is recorded in the first reproduction time slot, and the video and audio data Dp24 is recorded in the next reproduction time slot.
Video and audio data Dpk4 in the next playback time slot
Is reproduced and supplied to the bus 62-4, the video and audio data Dr4 supplied from the input interface circuit 24 is recorded in the medium set in the disk drive 78-4 in the next recording time slot, and the next reproduction is performed. The video and audio data Dp18 is reproduced in the time slot, the video and audio data Dp27 is reproduced in the next reproduction time slot, the video and audio data Dpk8 is reproduced in the next reproduction time slot, and the reproduced data is supplied to the bus 62-4. The video and audio data Dr8 supplied from the input interface circuit 24 in the slot is recorded on the medium set in the disk drive 78-4.

By the way, in this example, the buses 62-1 and 62-
Video and audio data 62 on 2, 62-3 and 62-4
Of p1, 62p2, 62p3 and 62p4, video and audio data Dp11 to Dp14 and Dp15 to Dp1
A case where 8 is supplied to the video special effect mixer 25 will be described.

Buses 62-1, 62-2, 62-3 and 6
2-4 video and audio data 62p1, 62p2,
62p3 and 62p4 are matrix switchers 6 respectively
5, and is selected, and then supplied to the output interface circuits 23-1, 23-2, ... 23-k.

Output interface circuit 2 shown in FIG.
Decoding circuits 91-1, 91-2, ... 9 through input terminals 91 of 3-1, 23-2 ,.
1-4 buses 62-1, 62-2, 62-3 and 6 respectively
When the video and audio data on 2-4 is supplied, each decoding and writing control circuit 91-1, 91-2, 91-
3 and 91-4 respectively decode only the data supplied to the video special effect mixer 25 to decode the data reproduction flag FLG.
1, FLG2, FLG3, and FLG4 are generated, and the generated data reproduction flags FLG1, FLG2, FLG3, and FLG4 are supplied to the FIFOs 92-1, 92-2, 92-3, and 92-4, respectively, and a write control signal is also supplied. Supply.

This allows the FIFOs 92-1 and 92-
2, 92-3 and 92-4 include video and audio data 92.
I1, 92I2, 92I3 and 92I4 are written respectively. Therefore, the data reproduction flags FLG1, FLG2,
FLG3 and FLG4 are FIFOs 92-1 and 92-2,
It could also be considered a write enable signal for 92-3 and 92-4. That is, the data reproduction flag F
When the LG1, FLG2, FLG3 and FLG4 are at the high level "1", the FIFOs 92-1 and 92-
Of the video and audio data 62p1, 62P2, 62p3 and 62p4 supplied to 2, 92-3 and 92-4,
Video and audio data Dp11, Dp12, Dp13, D
p14, Dp15, Dp16, Dp17 and Dp18 are written to the FIFOs 92-1, 92-2, 92-3 and 92-4.

Video and audio data 92I written in the FIFOs 92-1, 92-2, 92-3 and 92-4.
1, 92I2, 92I3, and 92I4 are sequentially read by a read control signal from the read control circuit 94, and as shown in FIG. 11, video and audio data Dp1.
.., Dp12, ...

Next, a configuration example of the input interface circuit 24 shown in FIGS. 1 and 3 will be described with reference to FIG.

In FIG. 5, reference numeral 110 designates FIGS.
Image special effect mixer 25 or 60 from the outside
An input terminal to which video data (in the case of digital data) of a transfer rate of field / second is supplied, 112 is a video special effect mixer 25 shown in FIGS. 1 and 3 or an image of a transfer rate of 60 field / second from the outside. An input terminal to which a signal (digital video signal) is supplied, 115 is the video special effect mixer 25 shown in FIGS. 1 and 3 or 6 from the outside.
An input terminal 117 to which audio data (digital audio data) having a transfer rate of 0 field / second is supplied is an audio signal having a transfer rate of 60 field / second from the video special effect mixer 25 shown in FIGS. 1 and 3. An input terminal to which a signal (analog audio signal) is supplied.

It is assumed here that, when the external input is digital video data and digital audio data, when the external input is an analog video signal and analog audio signal, the video special effect mixer 25 converts the digital video and audio data. In case of processing specifications, video special effect mixer 25
Is a specification for processing analog video and audio signals. Therefore, 111 is an input interface circuit (for example, RS232C, RS42) for digital video data.
2. Various serial or parallel interface circuits such as SCSI interface) 112 is an AD for converting an analog video signal into digital video data
A converter 115 is an input interface circuit (for example, RS232C, RS42) for digital audio data.
2, various serial or parallel interface circuits such as SCSI interface) 117 is an A- for converting an analog audio signal into digital audio data
It is a D converter.

The output end of the input interface circuit 111 is connected to one fixed contact 114d of the switch 114,
The output end of the A / D converter 113 is connected to the other fixed contact 114a of the switch 114, the movable contact 114c of the switch 114 is connected to the input end of the compression encoding circuit 120, and the output end of the input interface circuit 116 is connected to the switch 119. One of the fixed contacts 119d is connected, the output end of the A / D converter 118 is connected to the other fixed contact 119a of the switch 119, and the movable contact 11 of the switch 119 is connected.
9c is connected to the input end of the buffer memory 121.

Reference numeral 124 denotes a recording control communication controller. This recording control communication controller 124 sends a switching signal based on a recording / reproducing control signal from the control unit 27 shown in FIG. Get
This switching signal is supplied to the switches 114 and 119, respectively, and a data recording control signal is supplied to the system controller 76 shown in FIG. Further, the data buffering control signal is supplied to the buffer memory 121, and the writing and reading control of the video and audio data supplied from the switch 114 and the switch 119 to the buffer memory 121 are performed.

The compression encoding circuit 120 applies to the video data supplied via the switch 114 as described above.
It is selected when performing various compression processes such as DCT, quantization, variable length coding such as run length and Huffman, ADRC, and wavelet transform. If such compression is not performed, the switch is selected. The movable contact 114c of 114 is connected to the buffer memory 121.

Video data is supplied to one fixed contact 114d of the switch 114 via the input terminal 110 and the input interface circuit 111, and the input terminal 115
When voice data is supplied to one fixed contact 119d of the switch 119 via the input interface circuit 116, the switches 114 and 11 are switched by a switching signal from the recording control communication controller 124.
Nine movable contacts 114c and 119c are connected to one fixed contact 114d and 119d, respectively.

As a result, the video data from the input interface circuit 111 is supplied to the compression coding processing circuit 120 via the switch 114, the video data is compression coded in the compression coding processing circuit 120, and then the buffer memory is used. 121 is supplied. Also, the audio data from the input interface circuit 116 is supplied to the buffer memory 121 via the switch 119.

A data buffering control signal from the recording control communication controller 124 is supplied to the buffer memory 121, whereby video and audio data are sequentially written in the buffer memory 121. Buffer memory 1
The video and audio data written in 21 is read by the data buffering control signal, and the output terminal 122
Is supplied to the demultiplexer 75 shown in FIG.

On the other hand, the other fixed contact 11 of the switch 114 via the input terminal 112 and the A / D converter 113.
4a is supplied with video data, and the input terminal 117 and A-
When audio data is supplied to the other fixed contact 119a of the switch 119 via the D converter 118, the movable contact 11 of each of the switches 114 and 119 is generated by a switching signal from the recording control communication controller 124.
4c and 119c are fixed contacts 114a and 1 of the other side, respectively.
19a.

As a result, A
The video data from the -D converter 113 is supplied to the compression encoding processing circuit 120, the video data is compression encoded in the compression encoding processing circuit 120, and then supplied to the buffer memory 121. Further, the audio data from the AD converter 118 is supplied to the buffer memory 121 via the switch 119.

A data buffering control signal from the recording control communication controller 124 is supplied to the buffer memory 121, whereby video and audio data are sequentially written in the buffer memory 121. Buffer memory 1
The video and audio data written in 21 is read by the data buffering control signal, and the output terminal 122
Is supplied to the demultiplexer 75 shown in FIG.

As described above, in the present example, the video and audio data obtained by reproducing the high-speed transfer device 21 at n times the normal speed is output at the transfer speed n times the normal transfer speed. The video and audio data having a transfer speed n times the transfer speed is recorded or stored at a high speed in the temporary recording or storage device 22, and the video and audio data recorded or stored in the temporary recording or storage device 22 is output to the output interface circuit 2
3-1, 23-2, ... 23-k is used to convert to a normal transfer speed, and the video and audio data converted to the normal transfer speed is processed by the video special effect mixer 25 to perform video special effect processing and Audio signal processing is performed, the output video and audio data at the normal transfer rate of the video special effect mixer 25 is temporarily recorded or stored in the storage device 22, and the temporary recording or storage device 22 is read at high speed, The video and audio data having a transfer speed n times the transfer speed are output, and the video and audio data having the normal transfer speed are recorded by the high speed transfer device 26 at a recording speed four times the normal recording speed. In the editing system, only the processing in the video special effect mixer 25 required by the operator in the editing system can be performed at the normal transfer rate, and in the other processing, n of the normal transfer rate is used. Since the data can be transferred at the transfer rate, the editing efficiency is significantly improved, and the time to record or store the material to be edited in the temporary recording or storage device 22 or the video and audio data read from the temporary recording or storage device 22. It is possible to greatly reduce the time (which is a waiting time for the operator) for recording or storing the data with the high-speed transfer device 26. Further, since the material is temporarily recorded or stored in the temporary recording or storage device 22 and the material once recorded or stored in the temporary recording or storage device 22 is edited, the high-speed transfer device is completed after all the editing is completed. 26, the edited material is recorded, and at the time of the next editing, the temporary recording or storage device 2
2) Add new edited material to the edited material recorded or stored in 2 or insert the newly edited material previously edited and recorded or stored after the insert portion of the edited material It is possible to record or store the data again, and to record or store the material for insert in the portion to be inserted in the temporary recording or storage device 22, so that the video tape cassette set in the high-speed transfer device 26. It is possible to eliminate so-called seams on the tape, and it is possible to create an extremely accurate edited tape, for example, a tape for sending out such as a CM single tape.

When the high-speed transfer devices 21 and 26 are composed of VTRs and are reproduced at high speed in the reproducing system, a rotary drum equipped with a normal number of recording / reproducing heads 38-1 and 38-2 is usually used. Of the recording / reproducing heads 38-1 and 38-2 by scanning the recording track of the magnetic tape 39 which is rotated at a rotational speed n times the normal rotational speed and which is run at a running speed n times the normal running speed. The reproduced video and audio data obtained by reproducing the data are extracted by the data extraction circuit 43-1, the channel decoding circuit 44-1 and the error correction circuit 45-1.
Since the signal processing is carried out respectively and the signal-processed video and audio data is outputted by the output interface circuit 47, the video and audio data having a transfer speed n times the normal transfer speed are outputted serially. 1 / n of processing time
Can be recorded or stored in the temporary recording or storage device 22 at a speed of.

On the other hand, when the high-speed transfer devices 21 and 26 are composed of VTRs and when recording at high speed in the recording system, the input interface circuit 31 buffers the video and audio data at a transfer speed n times the normal transfer speed. The video and audio data are processed by the ECC adding circuit 33-1 and the channel coding circuit 34-1, and the signal-processed video and audio data are recorded in the normal number of recording / reproducing heads 38-1 and 38-2. Since the rotary drum equipped with is rotated at a rotational speed n times the normal rotational speed, and the magnetic tape 39 running at a running speed n times the normal running speed is scanned and recorded, Video data and audio data with a transfer speed n times the transfer speed of
Data can be recorded on the magnetic tape 39 at a speed of n.

Further, the demultiplexer 61 of the temporary recording or storage device 22 divides the video and audio data having a transfer speed n times the normal transfer speed into m video and audio data for each time slot, and divides them. The obtained m video and audio data are transferred to m disk drives 78-1 to 78
Record or store in the media set to -m,
The recorded or stored m pieces of video and audio data are integrated into one by the matrix switcher 65 (this one is, for example, one material unit, etc.), and this one video and audio data is output to the output interface circuits 23-1 to 23-1. 23-
The video and audio data from the video special effect mixer 25 supplied via the input interface circuit 24 or the audio data from the outside while being selectively supplied to k are converted into m video and audio data by the demultiplexer 75. The divided m pieces of video and audio data are recorded or stored in the media set in the disk drives 78-1 to 78-m, respectively, and the video and audio data recorded or stored in these media are recorded. Since it is read out and supplied to the multiplexer 81, and converted into serial data in the multiplexer 81 and output,
The editing efficiency can be greatly improved, the waiting time for the recording and reproducing processing can be at least 1 / n of the normal time, and the temporary recording or storage device 22 is interposed between the high speed transfer devices 21 and 26. Of the material to be edited are recorded or stored in each medium or one medium set in the disk drives 78-1 to 78-m, respectively, and a plurality of materials are recorded or stored in the temporary recording or storage device 22. Can be easily supplied to the video special effect mixer 25 in parallel for editing, and the operator can easily edit the same material many times.

Also, the output interface circuit 23-1
23-k, when the video and audio data are compression-encoded, the compression-decoding processing circuit 95 can perform the compression-decoding processing. Further, the input interface circuit 24 compresses the video and audio data. Since the encoding can be performed, the compression encoding for the video data can be selected and the editing work can be performed regardless of the selection. Further, in the above-mentioned example, the case has been described in which only the video data can be compression-encoded, but it will be apparent that the audio data can be compression-decoded similarly to the video data. As described above, in the editing system in which the compression encoding can be selected, if the compression encoding is performed, the recording or storage capacity of the temporary recording or the storage device 22 can be greatly increased in an equal manner.

When a normal number of heads are mounted on the rotary drum and a normal transfer speed is required,
Since the magnetic tape 39 is rotated at a normal running speed and the rotating drum is rotated at a normal rotation speed, for example, confirmation and monitoring can be performed in the editing work without adding a configuration for that purpose.

When a normal number of heads are mounted on the rotary drum and a transfer speed of 1 / n of the normal transfer speed is required, the magnetic tape 39 is 1 / n times the normal running speed. Since the rotating drum is rotated at a rotation speed 1 / n times the normal rotation speed, in editing work, for example, by selecting video and audio data with few errors, more accurate editing can be performed. The result can be obtained.

In the above example, the video and audio data are described as the case of the NTSC system, but in the PAL system, the SECAM system or the high definition television system, the frequency of the system clock, the rotation speed of the rotary drum, etc. This can be achieved by setting various parameters in each component. Of course, when the video and audio data is a high definition television system, the transfer rate can be further improved by using compression encoding and decoding processing.

[Second Embodiment]

Next, referring to FIG. 12, in the editing system shown in FIG. 1, the high speed transfer device 21 and the high speed transfer device 26 are used.
An example in which the semiconductor memory device is configured as will be described. Therefore, in this case, the video tape cassettes 20 and 29 shown in FIG. 1 are card type memories in this example, or are large-capacity memory devices inside the high-speed transfer devices 21 and 26. For convenience of illustration, FIG.
In the description, the case where a high-capacity memory device is mounted inside the high-speed transfer devices 21 and 26 will be described.

When a high-capacity memory device is provided in the high-speed transfer device 21, naturally, the video and audio data are transmitted serially or in parallel at a transfer speed n times the normal transfer speed. . Of course, the high-speed transfer device 21 is composed of a semiconductor memory device, and the high-speed transfer device 21 is further supplied with video and audio data at a transfer speed n times the normal transfer speed from the high-speed transfer device composed of a VTR or the like. Although it is possible to do so, it is not a good idea because doing so would increase the number of devices for transfer by one.

However, in a broadcasting station, for example,
A high-speed transfer device composed of a VTR is installed in a certain room, and video and audio data having a transfer speed n times the normal transfer speed from this high-speed transfer device is installed in another room. In the case of supplying to the high-speed transfer device 21 of the system, one method is to configure the high-speed transfer device 21 with a semiconductor memory device for buffering before recording or storing in the temporary recording or storage device 22.

Further, the high-speed transfer device 26 has no problem in constructing the semiconductor memory device. Of course, this is not the case when the edited medium is required for the video tape cassette, but there is a problem when the high speed transfer device 26 is used for sending out or when the edited medium is required in the card type memory. Can be used without.

In FIG. 12, 150 is a high-speed transfer device 21.
In the case of, for example, an input terminal to which video and audio data having a transfer speed n times the normal transfer speed from the outside (of course, the normal transfer speed may be used) is supplied. It is an input terminal to which video and audio data having a transfer rate n times the normal transfer rate from the storage device 22 is supplied.

The video and audio data supplied through the input terminal 150 is supplied to the time-base expansion circuit 151 (of course, the transfer speed is n times the normal transfer speed, and the normal transfer speed is used). Is unnecessary), the time axis is expanded in this time axis expansion circuit 151. The video and audio data whose time axis has been expanded by the time axis expansion circuit 151 is supplied to an ECC (error correction code) addition circuit 152, and this ECC addition circuit 1
The ECC is added at 52 and then supplied to the input / output control circuit 154.

The input / output control circuit 154 is the ECC adding circuit 1
It has an input / output circuit for supplying the video and audio data from 52 to the semiconductor memory 155, a compression encoding circuit and a decoding circuit. Since this compression encoding circuit is for video and audio data, it is the above-mentioned DCT, quantization, variable length encoding such as Huffman or run length, or ADRC.
And a circuit for performing wavelet conversion, and the decoding circuit is a circuit for performing reverse processing of the compression encoding circuit to expand the compression encoded video and audio data.

As the configuration of the input / output circuit, a table (memory) for storing in which area of the semiconductor memory 155 the video and audio data is stored, for example, for each field, each frame, or each segment, A configuration such as a switching circuit for switching the input / output direction can be considered.

The semiconductor memory 155 is, for example, an SRAM.
(Static RAM), DRAM (Dynamic RA
M), EEPROM, etc., and a battery backup circuit (including primary or secondary battery) for SRAM or DRAM. Writing / reading of video and audio data to / from the semiconductor memory 155 is performed by the writing / reading circuit 156. This write / read circuit 156
Generates a write / read control signal based on the system clock and sync signal from the system clock / sync signal generation circuit 160, and supplies the generated write / read control signal to the semiconductor memory 155.

Reference numeral 157 denotes, for example, the semiconductor memory 155.
Operation unit 158 for instructing various operation contents such as resetting stored data of the memory and manual writing and reading in the semiconductor memory 155, and 158 is an operation unit 157.
System clock / synchronization signal generation circuit 1 based on the operation of
It is a system controller for notifying the operation content to 60. The system controller 158 also supplies a recording / reproducing control signal to the control unit 27 shown in FIG. 1 via the input / output terminal 159.

The video and audio data read from the semiconductor memory 155 is decompressed by a decoding circuit (not shown) of the input / output circuit 154 and then supplied to the error correction circuit 163 where it is subjected to error correction processing. It is supplied to the compression circuit 164 and the output signal processing circuit 165, respectively.

The output signal processing circuit 165 converts the video and audio data from the error correction circuit 163 into a digital or analog video and audio signal of 60 fields / second in the NTSC system and outputs the digital or analog video and audio signal. Output from the terminal 166.

The time axis compression circuit 164 is the error correction circuit 1
The time axis of the video and audio data from 63 is compressed by reading it from the internal memory at high speed (for example, n times as high as when writing), and the compressed video and audio data is output via the output terminal 165.

System clock / sync signal generation circuit 16
0 obtains a sync signal from video and audio data supplied through the input terminal 150, generates a system clock and a sync signal based on the sync signal, and adds the system clock and the sync signal to the time axis expansion circuit 151 and ECC, respectively. Circuit 15
2, write / read circuit 156, error correction circuit 1
63, time axis expansion circuit 164 and output signal processing circuit 1
Supply to 65 respectively.

Now, the high speed transfer device 26 shown in FIG.
In the case of the configuration shown in FIG. 2, the writing and reading speeds of the video and audio data in the high-speed transfer devices 21 and 26 can be changed by changing the timing of the writing / reading control signal generated by the writing / reading circuit 156. Therefore, although the case where the time axis expansion circuit 151 and the time axis compression circuit 164 are used has been described with reference to FIG. 12, it is realized by changing the writing and reading timings by the writing / reading circuit 156 without using these circuits. be able to. Further, the ECC addition circuit 152 and the error correction circuit 163 may be omitted.

As described above, the high speed transfer device 2 shown in FIG.
If 1 and 26 are configured using a semiconductor memory device,
The configuration and processing can be simplified, and the processing speed can be further improved when used in the editing system.

In the above example, the high speed transfer devices 21 and 2 are used.
6 has been described as a semiconductor memory device, a video tape cassette currently used as a medium for video and audio data has a large-capacity card type memory (of course, a memory such as a RAM that needs backup, or If a memory such as a flash memory that does not require backup is used), the high-speed transfer devices 21 and 26 can be used as a card-type memory drive and the storage medium can be a card-type memory. .

In addition, the above-mentioned examples (high-speed transfer devices 21 and 2)
6 is composed of a VTR or a semiconductor memory device respectively), and the high-speed transfer devices 21 and 26 are, for example, optical discs (magneto-optical discs, write-once optical discs, optical discs as phase-change media, etc.), drives for driving hard disks. It may be configured.

When the high-speed transfer devices 21 and 26 are composed of disk drives, a plurality of heads are provided for one disk corresponding to a required transfer speed, and reproduced data from the plurality of heads are processed by signals. In addition to mounting a plurality of systems, a plurality of systems that perform signal processing of a plurality of data to be recorded, or one head or a plurality of heads corresponding to transfer rates required for a plurality of disks. And a plurality of signal processing circuits for recording and reproduction are provided.

The advantage of using a disc as a medium is that it is easier and faster to access than a video tape cassette, so that it can be easily performed when the operator redoes editing, and it is necessary in the high speed transfer device 21. You can easily perform the task of searching for various materials. Furthermore, when the high-speed transfer device 21 is configured by a disk drive, a format in which one disk is divided into a plurality of areas for use, or a plurality of disks (for example, a plurality of disks such as a hard disk is used, It is also possible to use the temporary recording or storage device 22 shown in FIG.

When the temporary recording or storage device 22 is composed of a disk drive, the edited area Ar
It is possible to add and insert edited video and audio data to the video and audio data recorded or stored in 2. In such a case, the medium of the high speed transfer device 26 (especially in the case of a video tape). It is possible to obtain a so-called seamless video tape cassette 29 because it can be recorded at one time, and this video tape cassette is reproduced, and a reproduction signal is supplied to a television monitor or the like and displayed on its screen. In this case, for example, it is possible to eliminate the image disturbance and the like that occur when the seam is reproduced.

[Third Embodiment]

Next, a third embodiment of the editing method and system of the present invention will be described with reference to FIGS. In the third embodiment, the structure of the high speed transfer devices 21 and 26 shown in FIG. 1 is changed. Specifically, the recording / reproducing head is set to scan n tracks in a stopped state where the magnetic tape is not traveling the lead angle of the recording / reproducing head. When a transfer speed n times the normal transfer speed is required, the number of recording / reproducing heads mounted on the rotary drum is xn (where x is the number of heads required at the normal transfer speed). The magnetic tape is formed on the recording medium when the recording medium is run at a speed n times the normal running speed and the lead angle is stopped while the head is scanning the recording medium. Set to straddle nm tracks (however, m is the number of tracks that one head straddles when the rotating drum is rotated once while the movement of the recording medium is stopped by setting a normal lead angle) Then, the rotating drum is rotated at a normal rotation speed. In the following description, the configuration of the high-speed transfer devices 21 and 26 is changed in the system shown in FIG. 1, and the configurations of other circuits and the like shown in FIG. Only 21 and 26 will be described.

In FIG. 13, reference numeral 30 designates an external input terminal in the case of the high speed transfer device 21, and the video and audio data 31p transferred in high speed from the temporary recording or storage device 22 shown in FIG. 1 in the case of the high speed transfer device 26. Input terminal supplied.

The video and audio data 31p transferred at high speed through the input terminal 30 is demultiplexer 3
1 is supplied. The demultiplexer 31 divides and outputs the video and audio data transferred at high speed.
Although it is divided, for example, the temporary recording or storage device 22
The data for each reproducing head of the high-speed transfer device 21, that is, the data for each track is supplied as one data string. Therefore, the data is converted into the original data string, that is, the data for each track (segment division). And so on).

The respective data divided into the data for each track by the demultiplexer 31 are time-axis expansion circuits 32-1 and 3-3.
2-2, ..., 32-n, respectively. These time axis expansion circuits 32-1, 32-2, ... 32-n
Each have, for example, a dual port memory and a write / read circuit. Then, these time axis expansion circuits 32
-1, 32-2, ..., 32-n are n times the normal transfer speed, and intermittently supplied data are intermittently written to the dual port memory at the same speed, and are written to the dual port memory. By reading the written data at the normal transfer rate, the time axis of the data having the transfer rate n times the normal transfer rate is expanded.

Time axis expansion circuits 32-1, 32-2, ...
The video and audio data whose time axis has been expanded by 32-n are supplied to ECC (error correction code) addition circuits 33-1, 33-2, ... 33-n, respectively. These ECC adding circuits 33-1, 33-2, ...
.. 33-n are time axis expansion circuits 32-1, 32-2,
... Adds ECC to the time-axis expanded video and audio data supplied from 32-n. This ECC
The video and audio data to which ECC has been added by the adding circuits 33-1, 33-2, ... 33-n is CHCOD.
(Channel coding) circuits 34-1, 34-2,
... 34-n are supplied to the respective recording modulation processing (digital modulation processing).

This channel coding circuit 34-
Each of the video and audio signals subjected to the recording and modulation processing at 1, 34-2, ...
Switch 35 through 1, 35-2, ..., 35-n
-1, 36-2, ..., 36-n each movable contact 36c
Are supplied to each.

These switches 36-1, 36-2 ,.
... 36-n fixed contacts 36a on one side are connected to the primary side of the rotary transformers 37-1, 37-2, ... 37-n, and these switches 36-1, 36-2,・
The rotary contacts 37-n + 1, 37-n + 2, ...
Connect to the primary side of 2n.

These switches 36-1, 36-2, ...
36-n are switching signals SW1, SW2, ... SWn from a system controller 50 described later.
Based on the above, the movable contact 36c is connected to one or the other fixed contact 36a or 36b, and the recording / reproducing head 38-
1, 38-2, ... 38-n, ... 38-2n
Switch. Also, these rotary transformers 3
7-1, 37-2, ... 37-n, ... 372
n, a tape loading mechanism (not shown), recording / reproducing heads 38-1, 38-2, ... 38-n ,.
The controller 40 controls the tape transport unit composed of 38-2n.

Therefore, at the time of recording, the video and audio signals from the recording amplifier circuits 35-1, 35-2, ... 35-n are switched to the switches 36-1, 36-2 ,.
One or the other fixed contact 36a or 36b of -n
Also, rotary transformers 37-1, 37-2, ...
.. 37-n, ..., 37-2n through recording / reproducing heads 38-1, 38-2 ,.
.. are sequentially supplied to the 38-2n and are recorded on the magnetic tape 39 so as to sequentially form inclined tracks.

Recording / reproducing heads 38-1, 38-2,
38-n, ... 38-2n face each other on a rotating drum (not shown), and each recording / reproducing head 38-1, 38-2, ... 38-n ,. ...
38-2n are evenly attached. Here, the recording / reproducing heads 38-1, 38-2, ... 3
The number of 8-n, ..., 38-2n is the magnetic tape 39.
When the transfer speed is n times the normal transfer speed, and the transfer speed is n times the normal transfer speed with the rotation speed of the rotary drum being the normal rotation speed, the number is 2n.

The recording / reproducing heads 38-1, 38-2, ..., 38-n will be described with reference to FIG.

FIG. 14A shows an example in which recording / reproducing heads 38-1, 38-2, ... 38-n are mounted on a rotary drum, FIG. 14B shows a cross section of the rotary drum 200, and FIG. FIG. 14D shows the lead angle of the recording / reproducing head (the recording / reproducing head 38-1 is shown as an example) mounted on the rotary drum 200, FIG. 14D shows the normal lead angle of the recording / reproducing head, and FIG. 14E shows this example. Shows the read angle of the recording / reproducing head.

First, in this example, as shown in FIG. 14A, the recording / reproducing heads 38-1, 38-2, ...
38-8 on the rotary drum 200, with a uniform interval between them, and recording / reproducing heads 38-1 and 38
-5, recording / reproducing heads 38-2 and 38-6, recording / reproducing
Reproducing heads 38-3 and 38-7, recording / reproducing head 3
8-4 and 38-8 are attached to the rotating drum 200 so as to face each other.

Next, as shown in FIG. 14B, the rotary drum 200 is provided with a step above and below, and when the magnetic tape 39 is guided by this step, the recording / reproducing head (recording / reproducing) is performed. The head 38-1 is shown as an example) to scan the magnetic tape 39 at an intended lead angle. A front view of this is shown in FIG. 14C.
Where the lead angle is θ.

FIG. 14D shows a normal lead angle θ1. When the normal lead angle θ1 is set, the magnetic tape 3
When the rotary drum 200 on which the recording / reproducing head is mounted is rotated once while the traveling of No. 9 is stopped, the recording / reproducing head scans the track once from the bottom to the top as indicated by the solid arrow. .

FIG. 14E is an example of the lead angle set in this example, and this figure shows the lead angle θ2 when a transfer rate that is four times the normal transfer rate is obtained. When this lead angle θ2 is set, the recording / reproducing heads 38-1, 38-2, ... With the traveling of the magnetic tape 39 stopped.
... When the rotary drum 200 having 38-8 mounted thereon is rotated, the recording / reproducing heads 38-1, 38-2, ...
38-8 indicates a track T1, as shown by a solid arrow.
Scan across T2, T3, and T4.

As shown in FIG. 14E, when a transfer rate four times the normal transfer rate is obtained, the read angle θ2 is set to the recording / reproducing heads 38-1, 38-2, ... 38-8.
Respectively set the lead angle across four tracks by one scanning, and set the running speed of the magnetic tape 39 to the normal running speed of 4
That is, the rotation speed of the rotary drum 200 may be set to the normal rotation speed.

When the magnetic tape 39 is run at a running speed four times the normal running speed and the rotating speed of the rotary drum 200 is set to the normal rotating speed, the tracks T1, T2,
Recording / reproducing heads 38-1 and 38 for scanning T3 and T4
-38, the scanning locus of 38-8 is the magnetic tape 39.
Stand up than when you're stopped. In other words, the recording / reproducing heads 38-1, 38-2, ... 3
When the scanning locus of 8-8 is from the bottom to the top of the magnetic tape 39,
The angle formed by the lower end of the magnetic tape 39 and the scanning locus becomes large. Then, the recording / reproducing heads 38-1, 38-
Considering one recording / reproducing head among 38 ...
1, T2, T3 or T4, as shown in FIG. 14D,
Scanning is performed once during one rotation of the rotary drum 200.

Under the above conditions, 2 × n recording / reproducing heads are required to obtain a transfer rate n times the normal transfer rate. That is, in this example, the number is 2 × n.
Here, x is set to "2" because "normal tape running speed" (so-called 1x speed, etc.) is 180 on the rotating drum.
When a total of two recording / reproducing heads are provided facing each other, when it is considered that one frame of inclined track is formed on the magnetic tape 39 while the rotating drum rotates y, the same rotating drum y rotation 2 × n recording / reproducing heads are used to form one frame of inclined tracks on the magnetic tape 39.
This is because the magnetic tape 39 can be run at n times the normal running speed in order to be able to form the magnetic tape 39 on the upper side.

For example, in the component digital format (D1 format, etc.), so-called segment recording is performed in which four heads are used to rotate the rotary drum at 150 revolutions / second to form inclined tracks at a rate of 10 tracks per field. There is. Therefore, if the transfer speed of n-fold speed is obtained in this format, 4n heads are required when the running speed of the magnetic tape is set to n-fold speed while keeping the rotation speed of the rotary drum as normal. If four heads are left and the magnetic tape travels at n times the normal speed,
The rotation speed of the rotating drum is n times the normal rotation speed, and in order to make the transfer speed 1 times the normal transfer speed by using 4n heads, the tape running speed is 1 time,
To make the rotating speed of the rotating drum 1 × and the transfer speed 1 / n times the normal transfer speed by using 4n heads, the tape running speed is 1 × and the rotating drum rotating speed is 1 / n. n times speed. Of course, the same applies to the D2 format and other digital formats.

In this example, the recording amplifier circuits 35-1 and 35 are used.
-32, ..., 35-n are sequentially supplied with video and audio data to be recorded from the channel coding circuits 33-1, 33-2 ,.
Playback heads 38-1, 38-2, ... 38-n, ...
... 38-2n are recording amplifier circuits 35-1 and 35-
The recording current is sequentially supplied by 2, ..., 35-n.

The recording data recorded on the magnetic tape 39 is recorded / reproduced by the recording / reproducing heads 38-1, 38-2, ...
38-n, ..., 38-2n are sequentially reproduced. Although not shown in FIG. 2, the recording / reproducing heads 38-1, 38-2, ... 38-n ,.
-2n is 180 degrees on the rotating drum, and each recording /
Playback heads 38-1, 38-2, ... 38-n, ...
It is provided so that the intervals between 38-2n are even.
As shown in FIG. 2, a recording system and a reproducing system are combined into one VTR.
, The recording / reproducing heads 38-1, 38-2, ...
... 38-2n may be mounted on the rotating drum, or the recording head and the reproducing head may be mounted adjacent to each other on the rotating drum. The running speed of the magnetic tape 39 is n times the normal running speed as described above, and the number of rotations of the rotating drum (the magnetic tape 39 and the recording / reproducing heads 38-1, 38-2, ...
.. 38-n, ... 38-2n (relative speed to 38-2n) is kept normal, and the transfer speed can be n times the normal speed.

Recording / reproducing heads 38-1, 38-2, ...
38-n, ..., 38-2n are reproduced signals from rotary transformers 37-1, 37-2 ,.
7-n, ...
1, 36-2, ..., 36-n to one or the other fixed contact 36a or 36b in sequence (reproduction order)
Supplied. These switches 36-1, 36-2, ...
The switching signals SW1 to SW4 from the system controller 50 are supplied to 36-n, as in the recording. As a result, the switches 36-1, 36-2, ...
.. 36-n connects the movable contact 36c to one or the other fixed contact 36a or 36b.

Therefore, the reproduced signals sequentially reproduced are the fixed contacts 36a or 36b of one or the other of the switches 36-1, 36-2, ... 36-n and the reproduction amplifier circuits 42-1 and 42-2. , 42-n are sequentially supplied to the data extraction circuits 43-1, 43-2 ,. These data extraction circuits 43-1 and 43-
2, ... 43-n are reproduction amplifier circuits 42-1 and 42-
A clock signal is extracted from the reproduction signal supplied from 2, ..., 42-n, and video and audio signals are extracted by the extracted clock signal. Data extraction circuits 43-1, 4
The video and audio data extracted in 3-2, ..., 43-n is CHDEC (channel decoding)
... 44-n are supplied to the circuits 44-1, 44-2 ,.

Channel decoding circuit 44-1
.. 44-n are data extraction circuits 43-n.
, 43-2, ..., 43-n to demodulate the video and audio signals (digitally modulated) to obtain the original video and audio data, and use the demodulated video and audio data for the error correction circuit 45. , 45-2, ..., 45-n.

Error correction circuits 45-1, 45-2, ...
..... 45-n is a channel decoding circuit 44-
1, 44-2, ..., 44-n are subjected to error correction processing on the video and audio data based on the ECC added to the video and audio data, and the video subjected to the error correction processing. And audio data are time-axis compression circuit 46
, 46-2, ..., 46-n. Here, when error correction is performed using the ECC added to the video and audio data, error correction processing is performed on the data that cannot be completely corrected, and the data closest to the original data is restored.

Time axis compression circuits 46-1, 46-2, ...
Each of the 46-n has a dual port memory and a write / read circuit. These time base compression circuits 46-
46-n are error correction circuits 4
45-n from 5-1, 45-2, ... 45-n are written to the dual port memory at a normal speed and read from the dual port memory at a speed n times the normal speed. Time axis compression circuits 46-1, 46-2,
... The video and audio data read from 46-n at a speed n times the normal speed are sequentially (compressor circuit 46-1,
46-2, ..., 46-n) to the multiplexer 47.

The multiplexer 47 is a time base compression circuit 46.
-1, 46-2, ..., 46-n are sequentially supplied, and the video and audio data are selected and output in the transmission order. This output is output from the output terminal 48, and in the case of the high-speed transfer device 21 shown in FIG. 1, it is supplied to the temporary recording or storage device 22 as video and audio data 48p.

By the way, in the case of the high-speed transfer device 26, if the high-speed transfer device 26 is to be used for output in the sending system, it is determined that the reproduced video and audio data is compressed data. For example, a cart system, a master switcher, and a transmitter) must have a circuit for extending the time axis. Therefore, in order not to modify the system of the next stage, the time axis compression circuits 46-1, 46-2 ,.
..Without using the output of 46-n
It is necessary to use the outputs of 1, 45-2, ..., 45-n.

That is, when the configuration shown in FIG. 2 is applied to the high speed transfer device 26 shown in FIG. 1, the error correction circuit 45-
45-n are connected to the input end of the output interface circuit 40 as shown in the figure, and the output interface circuit 40 converts the output data into the original data for output. You can do it. With this configuration, it is possible to connect a television monitor or the like to the output interface circuit 30 and monitor the image projected on the screen.

Although not shown, 49 is an operation section having, for example, a display section and an operation key group. By operating the operation section 49 or by supplying the recording / reproducing control signal from the control section 27 shown in FIG. A control signal is supplied to the synchronization signal generation circuit 52.

As a result, the system clock / synchronization signal generation circuit 52 has the above-described demultiplexer 31, time axis expansion circuits 32-1, 32-2, ... 32-n, EC
C-addition circuits 33-1, 33-2, ... 33-n, channel coding circuits 34-1, 34-2 ,.
34-n, data extraction circuits 43-1, 43-2, ...
.... 43-n, channel decoding circuit 44-
44-n, error correction circuit 45
, 45-2, ... 45-n, time axis compression circuit 4
46-n, 6-1, 46-2, ..., 46-n, respectively, and supplies necessary system clocks and synchronization signals to the multiplexer 47.

In the configuration shown in FIG. 2, the recording / reproducing head 3
8-1, 38-2, ... 38-n, ... 38-
Since 2n is opposed by 180 degrees, both the recording system and the reproducing system are halved by switching every half rotation of the rotating drum.

In the above example, 2n heads are mounted on the rotary drum for recording and reproduction, the rotary drum is rotated at a normal rotation speed, and the magnetic tape 39 is rotated at a speed n times the normal speed. I explained the case of running and recording and reproducing, but the method of rotating the rotating drum at a speed higher than the normal rotation speed to perform high-speed transfer,
Further, it is possible to employ a method in which the number of heads is increased and the rotation speed of the rotary drum is increased. Therefore, the number of recording / reproducing heads is not necessarily set to 2n in order to make the transfer rate n times the normal transfer rate.

Here, the relationship between the desired transfer speed, the rotation speed of the rotary drum, and the number of recording / reproducing heads will be described by taking some patterns as examples.

First, as a premise, one or a plurality of recording / reproducing heads are arranged on the rotating drum side by side in the height direction of the rotating drum, and one or a plurality of recording / reproducing heads arranged side by side in this height direction. When one set is used as a set, no matter how many sets are mounted on the rotary drum, the sets should be attached so that all the sets have equal intervals (or the same angular intervals). Further, the lead angle is set such that the number of tracks which the recording / reproducing head straddles while rotating the rotating drum 200 once when the magnetic tape 39 is stopped is based on the normal number of tracks. Here, the normal number of tracks means, for example, the number of tracks scanned by one head when the rotary drum 200 is rotated once while the magnetic tape 39 is stopped.

Based on the above, recording / recording in the case of obtaining a transfer rate four times the normal transfer rate, for example.
1 when the number of playback heads, magnetic tape running speed, rotating drum rotating speed, and magnetic tape running are stopped
The relationship between the numbers of tracks spanned by one recording / reproducing head is shown as an example.

Number of heads Tape running speed Drum rotation speed Tracks straddling when the tape is stopped 8 4 × Normal speed 1 × Normal speed 4 × m (m is the normal number) 4 4 × Normal speed 2 × Normal speed 2 × m 3 4 × Normal speed 8/3 × normal speed 3/2 × m 2 4 × normal speed 4 × normal speed 1 × m

That is, if the number of heads for obtaining the normal transfer speed is x, and the number of heads is xn and the tape traveling speed is n times the normal traveling speed, the rotating speed of the rotary drum is the normal speed. The rotation speed is good, but if the number of heads decreases, the rotation speed of the rotary drum must be increased accordingly. Therefore, when the magnetic tape 39 is run at a speed n times the normal speed, hd = xn, where d is the magnification of the rotary drum with respect to the normal rotation speed and h is the number of heads.
The number of heads h is set to a magnification d or the number of heads h to the normal speed of the rotating drum so that T is the number of normal tracks that the recording / reproducing head straddles with the magnetic tape running stopped, That is, it suffices to set the lead angle at which Td = n.

As can be seen from the above description, in the above example, the transfer rate was explained as being four times the normal transfer rate, but it is also possible to vary the transfer rate. That is, the transfer rate required by the operator can be set to the transfer rate designated by the operation key of the operation unit 28 shown in FIG.

For this, it is possible to employ a method in which a large number of recording / reproducing heads are mounted on the rotary drum in advance and the number of recording / reproducing heads used is varied according to the designated transfer speed. The term "number of uses" as used herein refers to the number of heads to which a recording current is applied during recording, and the number of heads to which a reproduction signal is valid during reproduction. Of course,
By changing the number of recording / playback heads used and the transfer speed, some circuits can be dispensed with.
It is necessary to automatically select the circuit to be used and the circuit not to be used. In this variable method, it is necessary to mount the recording / reproducing head on a large number of rotating drums in advance and change the lead angle. In any case, in order to change the transfer rate in this way, the system clock and lead angle of the circuit must be changed in conjunction with this, but the system clock is a well-known VCO (voltage controlled oscillator). This can easily be achieved by using a high-frequency crystal oscillator and frequency divider or a low-frequency crystal oscillator and multiplier.

In order to vary the lead angle, the tape guides should be provided with steps above and below each other so that the magnetic tape is guided by at least two tape guides, and the heights of these two tape guides are set by the motor. The lead angle can be changed by changing the.

Next, referring to FIGS. 15 to 17 sequentially,
The operation of the high speed transfer device 21 or 26 shown in FIG.
Will be described as "4". It is necessary to use eight recording / reproducing heads shown in FIG. 13 in order to increase the transfer rate four times by setting n to “4”. Therefore, if the number of heads for realizing the n-fold transfer speed is two, the number of recording / reproducing heads used in the VTR having the normal transfer speed is two.
Since the number is 2n, the number of recording / reproducing heads shown in FIG.
The reproducing heads 38-1, 38-2, ... 38-8 are used.

It will be described with reference to FIG. In FIG. 15, F
D is frame data, TD is track corresponding data, TP
Respectively indicate track patterns, and in this example, frame data P, P + 1, P + 2 and P + 3 (explained only by the amount shown in the figure, the others are omitted), P + 4, P
+5, ... Are respectively transferred in one frame period as real time. Dn / F is data for one frame,
Reference numerals in parentheses attached to TDn indicate head numbers, Tn / F indicates a track for one frame, a solid arrow in the upper part of the figure indicates a transfer order, and a solid arrow in the lower part indicates a tape running direction. (4 × speed running in this example) Tn indicates each track recorded in one frame period of real time.

First, focusing on the frames P and P + 1, the frame P has the first tracks TD1 (H1) and TD2.
(H2) ... TD8 (H8) ... TD12
(H4). That is, the first track corresponding data TD1 of the frame P is "H1", that is, recorded by the recording / reproducing head 38-1 shown in FIG. 13, and the second track corresponding data TD2 is "H2", that is, FIG. The recording / reproducing head 38-2 shown in FIG. 13 records the eighth track corresponding data TD8 at "H8", that is, the recording / reproducing head 38-8 shown in FIG. 12
The track-corresponding data TD12 is “H4”, that is, FIG.
Recording / reproducing head 38-4 (12-8 = 4) shown in FIG.
Recorded in.

Subsequently, the first track correspondence data TD1 of the frame P + 1 is "H5", that is, recorded by the recording / reproducing head 38-5 shown in FIG. 13, and the second track correspondence data TD2 is "H6", that is, , And is recorded by the recording / reproducing head 38-6 shown in FIG. 13, and the twelfth track corresponding data TD12 is "H8", that is, recorded by the recording / reproducing head 38-8 shown in FIG. . That is, in this example, the recording / reproducing heads 38-1, 38-2, ..., 38-8 record the data corresponding to the tracks three times each in two frames to form the tracks. . Of course, this is because the tape format of the VTR in this example is 12 tracks per frame. Therefore, when the number of tracks in one frame is 8, the recording / reproducing heads 38-1 and 38-1 are recorded in one frame.
-2, ..., 38-8 records the track-corresponding data once to form a track.

As a result, the tracks T1, T2, ... Corresponding to the frame P on the tape are shown by the diagonal lines in the figure.
.T12 is formed, and as shown by the dots in the figure, tracks T1, T2, ...
2 is formed. Of course, twelve tracks T1, T2, ... T12 of each frame are recorded within one frame / 4 in real time. Therefore, the track pattern TP
All the tracks T1 to T12 shown in (1) (48 tracks in total in the figure) are recorded during one frame of real time.

Next, referring to FIG. 16, data is transferred to the high-speed transfer device 26 shown in FIG. 13 at a speed four times the normal transfer speed, and eight recording / reproducing heads 38-
The operation of recording video and audio data at 1, 38-2, ..., 38-8 will be described. The symbols of the signals shown in FIG. 16 are also shown in FIG. 13 for the sake of clarity.

Reference numeral 31r is an input (high-speed transfer data) to the demultiplexer 31 shown in FIG. 13, and 32I1 to 32I4 are shown in FIG.
Input of time axis expansion circuits 32-1 to 32-4, 32O1
32O4 are time axis expansion circuits 32-1 to 32-32 in FIG.
4, the time axis expansion output 35O1 to 35O4 is the recording amplification output of the recording amplification circuits 35-1 to 35-4 in FIG.
SW4 is a switching signal from the system controller 50 supplied to the switches 36-1 to 36-4 of FIG. 13, 38p1 is a recording signal of the recording / reproducing head 38-1 of FIG. 13, 38r5 is recording / reproducing of FIG. Head 38-5
Is a recording signal of.

The recording / reproducing heads 38-2, 38-
The recording signals of 3, ..., 38-4, 38-6, and 38-8 are not shown. Also, the switching signal SW
1 to SW4 are the recording / reproducing heads 38-1, 38-2, ... Which are selected by the high level “1” and low level “0” states of the switching signals SW1 to SW4.
... Numbers "1" to "8" for indicating 38-8 are added.

First, the demultiplexer 3 shown in FIG.
1 is supplied with video and audio data 31r from the temporary recording or storage device 22 shown in FIG. 1 at a transfer rate four times the normal transfer rate via the input terminal 30. In FIG. 16, reference numeral T12 shown in the video and audio data 31r respectively
D3, T1D, T2D, ..., T3D respectively indicate the configuration data of the 12th track, the 1st track, the 2nd track ,.

When this video and audio data 31r is supplied to the demultiplexer 31, the demultiplexer 31 divides it into tracks. As shown in FIG. 16, the divided video and audio data becomes video and audio data 32I1, 32I2, 32I3, and 32I4, which are input to the time axis expansion circuits 32-1, 32-2, 32-3, and 32-4. Become.

The video and audio data 32I1 as the input of the time axis expansion circuit 32-1 is shown by the diagonal lines, and for each frame, the first track T1D, the fifth track T5D,
The data such as the ninth track T9D becomes the video and audio data 32I as the input of the time axis expansion circuit 32-2.
2 indicates a second track T2D, a sixth track T6D, and a tenth track T10 for each frame, as indicated by dots.
The video and audio data 32I3 as the input of the time axis expansion circuit 32-3 becomes the data such as D, and the third track T3D and the seventh track are provided for each frame as shown by the diagonal lines opposite to the video and audio data 32I1. T7D, first
Data such as one track T11D becomes video and audio data 32I as an input to the time axis expansion circuit 32-4.
As indicated by white coating (meaning that there is no pattern), 4 is data such as a fourth track T4D, an eighth track T8D, and a twelfth track T12D for each frame. That is,
In terms of output timing, the first track T1D, the second track T2D, the third track T3D, and the fourth track T4
D, fifth track T5D, sixth track T7D, ...
The eleventh track T11D and the twelfth track T12D are output in this order, and the time axis expansion circuit 32-1 is output in this order.
32-2, 32-3 and 32-4 are sequentially supplied.

Then, each time axis expansion circuit 32-1, 32
The video and audio data 32I1, 32I2, 32I3 and 32I4 supplied to the -2, 32-3 and 32-4 are
Time axis expansion circuits 32-1, 32-2, 32-3 and 32
The time axis is extended like the time axis extension outputs 32O1, 32O2, 32O3 and 32O4 of -4. For example, the video and audio data T1D, T5D, and T9D of the first track, the fifth track, and the ninth track of the video and audio data 32I1 which is the input of the time axis expansion circuit 32-1 are represented by solid line arrows. It is stretched four times in time. Other video and audio data 32I2, 32I3 and 3
The same applies to 2I4.

Time axis expansion circuits 32-1, 32-2, 32
-3 and 32-4 time axis extension outputs 32O1 and 32O
2, 32O3 and 32O4 are respectively ECC adding circuits 33-
ECC is added at 1, 33-2, 33-3 and 33-4, and channel coding circuits 34-1, 34-
2, 34-3 and 34-4 are digitally modulated, and amplifier circuits 35-1, 35-2, 35-3 and 35-.
4 and is recorded and amplified.

The recording amplifier circuits 35-1, 35-2, 3
Outputs 35O1, 35O2, 35O of 5-3 and 35-4
3 and 35O4 lag behind the time-axis expanded outputs 32O1, 32O2, 32O3 and 32O4, as shown in FIG. This delay time depends on the ECC adding circuit 33-1.
33-2, 33-3 and 33-4 and channel coding circuits 34-1, 34-2, 34-3 and 34-.
This is due to the processing in 4. For example, of the outputs 32O1 of the time axis expansion circuit 32-1, the time axis expansion output 32O1 of the first track T1D is, as indicated by the solid arrow, from this hatched portion to the oblique line of the output 35O1 of the recording amplification circuit 35-1. It becomes a part. Therefore, the delay time for each video and audio data is the time indicated by the symbol RD in the figure.

Now, the recording amplifier circuits 35-1, 35-2,
Video and audio signals (current signals) 35O1, 35O2, 35O3 and 35O output from 35-3 and 35-4
4 is a switch 36-1, 36-2, 36-3 and 36.
-4 is supplied to each movable contact 36c. Here, it should be noted that in this example, the case of obtaining a transfer rate four times as high as the normal transfer rate is explained. Therefore, 2 × n, that is, eight recording / reproducing heads are required. It is to be.

Therefore, in this example, one fixed contact 36a of the switch 36-1 is connected to the primary side of the rotary transformer 37-1, and the other fixed contact 3 of the switch 36-1 is connected.
6b is connected to the primary side of the rotary transformer 37-5,
One fixed contact 36a of the switch 36-2 is connected to the primary side of the rotary transformer 37-2, and the switch 36-2
The other fixed contact 36b of the rotary transformer 37-6
Connected to the primary side of the rotary transformer 37-3, one fixed contact 36a of the switch 36-3 is connected to the primary side of the rotary transformer 37-3, and the other fixed contact 36b of the switch 36-3 is connected to the primary side of the rotary transformer 37-7. Connect to the next side, switch 36
-4 one fixed contact 36a to the rotary transformer 37
-4, and the other fixed contact 36b of the switch 36-4 is connected to the primary side of the rotary transformer 37-8.

From system controller 50 to switch 3
When the switching signal SW1 supplied to 6-1 is high level "1", the switch 36-1 connects the movable contact 36c to one fixed contact 36a, and when it is low level "0", the switch 36-1 is The movable contact 36c is connected to the other fixed contact 36b. Therefore, the switching signal SW1
As shown above, the video / audio data T1D of the first track output from the recording / amplifying circuit 35-1 is recorded by the recording / reproducing head 38-1 so as to form an inclined track on the magnetic tape 39, and is recorded. Video and audio data T5D of the fifth track output from the amplifier circuit 35-1
Is recorded by the recording / reproducing head 38-5 so as to form an inclined track on the magnetic tape 39, and the video and audio data T9D of the ninth track output from the recording / amplifying circuit 35-1 is recorded / reproducing head 38-. 1 is recorded on the magnetic tape 39 so as to form an inclined track (this is not shown).

Next, when the switching signal SW2 supplied from the system controller 50 to the switch 36-2 is at the high level "1", the switch 36-2 moves to the movable contact 3
6c is connected to one fixed contact 36a, and in the case of low level "0", the switch 36-2 connects the movable contact 36c to the other fixed contact 36b. Therefore, as shown on the switching signal SW2, the video / audio data T2D of the second track output from the recording / amplifying circuit 35-2 forms an inclined track on the magnetic tape 39 by the recording / reproducing head 38-2. The video and audio data T6D of the sixth track recorded on the magnetic tape 39 and recorded on the magnetic tape 39 are recorded on the magnetic tape 39 by the recording / reproducing head 38-6.
The 10th track video and audio data T10D output from the recording / amplifying circuit 35-2 is recorded / reproduced by the recording / reproducing head 38-.
2 is recorded so as to form an inclined track on the magnetic tape 39 (this is not shown).

Next, when the switching signal SW3 supplied from the system controller 50 to the switch 36-3 is at high level "1", the switch 36-3 moves to the movable contact 3
6c is connected to one fixed contact 36a, and in the case of low level "0", the switch 36-3 connects the movable contact 36c to the other fixed contact 36b. Therefore, as shown on the switching signal SW3, the video / audio data T3D of the third track output from the recording / amplifying circuit 35-3 forms an inclined track on the magnetic tape 39 by the recording / reproducing head 38-3. The video and audio data T7D of the seventh track recorded on the magnetic tape 39 and recorded on the magnetic tape 39 is recorded on the magnetic tape 39 by the recording / reproducing head 38-7.
The 11th track video and audio data T11D output from the recording / amplifying circuit 35-3 is recorded / reproduced by the recording / reproducing head 38-.
3 is recorded on the magnetic tape 39 so as to form inclined tracks (this is not shown).

Next, when the switching signal SW4 supplied from the system controller 50 to the switch 36-4 is at high level "1", the switch 36-4 moves to the movable contact 3
6c is connected to one fixed contact 36a, and in the case of low level "0", the switch 36-4 connects the movable contact 36c to the other fixed contact 36b. Therefore, as shown on the switching signal SW4, the video / audio data T4D of the fourth track output from the recording / amplifying circuit 35-4 forms an inclined track on the magnetic tape 39 by the recording / reproducing head 38-4. The video and audio data T8D of the eighth track recorded on the magnetic tape 39 is recorded by the recording / reproducing head 38-8 so as to form an inclined track on the magnetic tape 39.
The video / audio data T12D of the twelfth track output from the recording / amplifying circuit 35-4 is recorded / reproduced by the recording / reproducing head 38-.
4 is recorded on the magnetic tape 39 so as to form inclined tracks (this is not shown). That is, as shown in FIG. 16, each recording / reproducing head 38-
. 38r8, video and audio signals 38r1, 38r2, ... 38r8 are recorded.

Next, with reference to FIG. 17, an operation when the video tape cassette 20 is reproduced by the high speed transfer device 21 shown in FIG. 13 will be described. In FIG. 17, the video / audio data is reproduced by the eight recording / reproducing heads 38-1, ..., 38-8 of the high-speed transfer device 21 shown in FIG. 13, which is four times the normal transfer rate. The operation when the reproduction data is transferred at the transfer speed will be described. The symbols of the signals shown in FIG. 17 are also shown in FIG. 13 for the sake of clarity.

In FIG. 17, 38p1 is a reproduction signal reproduced by the recording / reproducing head 38-1 shown in FIG.
8p5 is a reproduction signal reproduced by the recording / reproducing head 38-5 shown in FIG. 13 (38p2 to 38p4, 38p6).
Up to 38p8 are omitted), SW1, SW
2, SW3 and SW4 are the system controller 50, respectively.
Switching signals from 42I1, 42I2, 42I
3 and 42I4 are reproduction amplifier circuits 42-1 and 42-, respectively.
2, 42-3 and 42-4 inputs, 46I1, 46I
2, 46I3 and 46I4 are the time axis compression circuit 46-, respectively.
1, 46-2, 46-3 and 46-4 inputs, 46O
1, 46O2, 46O3 and 46O4 are time axis compression outputs of the time axis compression circuits 46-1, 46-2, 46-3 and 46-4, respectively, and 48p is an output of the multiplexer 47.

Here, it should be noted that, in this example, the case where a transfer rate that is four times the normal transfer rate is obtained as in FIG. 16 is explained. n, that is, 8 pieces are required.
Therefore, in this example, one fixed contact 36a of the switch 36-1 is connected to the primary side of the rotary transformer 37-1, and the other fixed contact 36b of the switch 36-1 is connected to the primary side of the rotary transformer 37-5. Connect to switch 36
-2 fixed contact 36a to rotary transformer 37
-2, the other fixed contact 36b of the switch 36-2 is connected to the primary side of the rotary transformer 37-6, and one fixed contact 36a of the switch 36-3 is connected to the rotary transformer 37-3. Connect to the primary side of switch 3
Connect the other fixed contact 36b of 6-3 to the rotary transformer 3
7-7, the fixed side 36a of the switch 36-4 is connected to the primary side of the rotary transformer 37-4, and the fixed side 36b of the switch 36-4 is connected to the primary side of the rotary transformer 37-4. 8 is connected to the primary side.

System controller 50 to switch 3
When the switching signal SW1 supplied to 6-1 is high level "1", the switch 36-1 connects the movable contact 36c to one fixed contact 36a, and when it is low level "0", the switch 36-1 is The movable contact 36c is connected to the other fixed contact 36b. Therefore, the switching signal SW1
As indicated by the numbers "1" and "5" attached above, when the switching signal SW1 is at the high level "1", the reproduction signal 38p1 from the recording / reproducing head 38-1 is supplied to the reproduction amplifier circuit 42-1. When the switching signal SW1 is at low level "0", the reproduction signal 38p5 from the recording / reproducing head 38-5 is supplied to the reproduction amplifier circuit 42-1.

Next, when the switching signal SW2 supplied from the system controller 50 to the switch 36-2 is at the high level "1", the switch 36-2 moves to the movable contact 3
6c is connected to one fixed contact 36a, and in the case of low level "0", the switch 36-2 connects the movable contact 36c to the other fixed contact 36b. Therefore, as indicated by the numbers "2" and "6" added to the switching signal SW2, when the switching signal SW2 is at the high level "1", the reproducing signal 38p2 from the recording / reproducing head 38-2 is reproduced by the reproducing amplifier circuit. 42-2 is supplied to the switching signal S
The recording / reproducing head 38 when W2 is at the low level “0”
The reproduction signal 38p6 from -6 is supplied to the reproduction amplifier circuit 42-2.

Next, when the switching signal SW3 supplied from the system controller 50 to the switch 36-3 is at high level "1", the switch 36-3 moves to the movable contact 3
6c is connected to one fixed contact 36a, and in the case of low level "0", the switch 36-3 connects the movable contact 36c to the other fixed contact 36b. Therefore, as indicated by the numbers "3" and "7" added to the switching signal SW3, when the switching signal SW3 is at the high level "1", the reproducing signal 38p3 from the recording / reproducing head 38-3 is reproduced and amplified by the reproducing amplifier circuit. 42-3 is supplied to the switching signal S
The recording / reproducing head 38 when W3 is at the low level "0"
The reproduction signal 38p7 from -7 is supplied to the reproduction amplifier circuit 42-3.

Next, when the switching signal SW4 supplied from the system controller 50 to the switch 36-4 is at the high level "1", the switch 36-4 moves to the movable contact 3
6c is connected to one fixed contact 36a, and in the case of low level "0", the switch 36-4 connects the movable contact 36c to the other fixed contact 36b. Therefore, as indicated by the numbers "4" and "8" added to the switching signal SW4, when the switching signal SW4 is at the high level "1", the reproducing signal 38p4 from the recording / reproducing head 38-4 is the reproducing signal 42I1. As a reproduction signal 42I1 is supplied to the reproduction amplification circuit 42-4 as a reproduction signal 42I1 when the switching signal SW4 is at the low level "0". .

As shown in FIG. 17, the reproduced signal 42I1,
42I2, 42I3 and 42I4 are reproduction amplifier circuits 42-
1 to 42-4, respectively, and these reproduction and amplification circuits 42
It is output after being reproduced and amplified in -1 to 42-4,
The clock signals are supplied to the data extraction circuits 43-1 to 43-4, respectively, and the clock signals are reproduced in the data extraction circuits 43-1 to 43-4, and the data is extracted by the reproduced clock signals. The video and audio signals from the data extraction circuits 43-1 to 43-4 are sequentially supplied to the channel decoding circuits 44-1 to 44-4, respectively, and demodulated in the channel decoding circuits 44-1 to 44-4. The original video and audio data is supplied to the error correction circuits 45-1 to 45-n in the next stage, and the error correction processing is performed as described above.

The video and audio data subjected to the error correction processing are supplied to the time axis compression circuits 46-1 to 46-4, respectively. Input 4 of the time axis compression circuits 46-1 to 46-4
6I1, 46I2, 46I3 and 46I4 are shown in FIG.

For example, in FIG. 17, in this example, when the switching signal SW1 is at the low level "0" indicating "5", the reproduction signal 38p from the recording / reproducing head 38-5 is generated.
5 and the reproduction signal 42I1 at the time of being supplied to the reproduction amplifier circuit 42-1 are not displaced, and similarly, when the switching signal SW1 is at the high level "1" indicating "1"
There is no deviation between the reproduction signal 38p1 from the reproduction head 38-1 and the reproduction signal 42I1 at the time of being supplied to the reproduction amplifier circuit 42-1.

However, the time base compression circuits 46-1 to 46-1
At the time of being supplied to 46-4, for example, there is a certain delay from the time axis compression circuit 46-1 input 46I1 as shown by the solid arrow. This delay time is due to the processing time in the channel decoding circuits 44-1 to 44-4 and the error correction circuits 45-1 to 45-4, and the time PD shown in the figure indicates the delay time. .

The video and audio data 46I1 to 46I4 supplied to the time axis compression circuits 46-1 to 46-4, respectively, are:
The time axis compression circuits 46-1 to 46-4 are temporarily written in the dual port memory, and then the write speed is set to 4
By being read at double speed, the time axis is compressed to 1/4. This compressed video and audio data 46O1-4
6O4 is sequentially supplied to the multiplexer 47. Compressed video and audio data 46 supplied to the multiplexer 47
O1-46O4 are converted into serial data, output as high-speed video and audio data 48p from the output terminal 48, and supplied to the temporary recording or storage device 22 shown in FIG.

As can be seen from FIG. 17, the compressed video and audio data 46O1 indicated by diagonal lines is composed of the first track corresponding data T1D, the fifth track corresponding data T5D and the ninth track corresponding data T9D, and the compressed video and audio data indicated by dots The audio data 46O2 is the data T corresponding to the second track.
2D, 6th track corresponding data T6D and 10th track corresponding data T10D. The compressed video and audio data 46O3 indicated by diagonal lines opposite to the compressed video and audio data 46O1 are the 3rd track corresponding data T3D and the 7th track corresponding data. T7D and 11th track corresponding data T1
The compressed video and audio data 46O4 composed of 1D, which is white (indicating that there is no pattern), is the data T corresponding to the fourth track.
4D, 8th track corresponding data T8D and 12th track corresponding data T12D.

As described above, in this example, the video and audio data reproduced by the high-speed transfer device 21 at a speed n times the normal speed is output at a speed n times the normal transfer speed. Video and audio data having a transfer speed n times the transfer speed are temporarily recorded or stored in the temporary recording or storage device 22, and the video and audio data recorded or stored in the temporary recording or storage device 22 are output to the interface circuit 2
3-1, 23-2, ... 23-k is used to convert to a normal transfer speed, and the video and audio data converted to the normal transfer speed is processed by the video special effect mixer 25 to perform video special effect processing and Audio signal processing is performed, the output video and audio data at the normal transfer rate of the video special effect mixer 25 is temporarily recorded or stored in the storage device 22, and the temporary recording or storage device 22 is read at high speed, The video and audio data having a transfer speed n times the transfer speed are output, and the video and audio data having the normal transfer speed are recorded by the high speed transfer device 26 at a recording speed four times the normal recording speed. In the editing system, only the processing in the video special effect mixer 25 required by the operator in the editing system can be performed at the normal transfer rate, and in the other processing, n of the normal transfer rate is used. Since the data can be transferred at the transfer rate, the editing efficiency is significantly improved, and the time to record or store the material to be edited in the temporary recording or storage device 22 or the video and audio data read from the temporary recording or storage device 22. It is possible to greatly reduce the time (which is a waiting time for the operator) for recording or storing the data with the high-speed transfer device 26. Further, since the material is temporarily recorded or stored in the temporary recording or storage device 22 and the material once recorded or stored in the temporary recording or storage device 22 is edited, the high-speed transfer device is completed after all the editing is completed. 26, the edited material is recorded, and at the time of the next editing, the temporary recording or storage device 2
2) Add new edited material to the edited material recorded or stored in 2 or insert the newly edited material previously edited and recorded or stored after the insert portion of the edited material It is possible to record or store the data again, and to record or store the material for insert in the portion to be inserted in the temporary recording or storage device 22, so that the video tape cassette set in the high-speed transfer device 26. It is possible to eliminate so-called seams on the tape, and it is possible to create an extremely accurate edited tape, for example, a tape for sending out such as a CM single tape.

Further, when the high-speed transfer devices 21 and 26 are composed of VTRs and are reproduced at high speed in the reproducing system, xn recording / reproducing heads 38-1, 38-2, ...
-2n (in this case, x is "2") is rotated at a normal rotation speed, and a recording track of the magnetic tape 39 is made to travel at a travel speed n times the normal travel speed. Scan each recording / reproducing head 38-1, 3
8-2, ... Reproduced video and audio data obtained by reproducing at 38-2n, n data extraction circuits 43-1 to 43-
n, n channel decoding circuits 44-1 to 44-4
4-n, n error correction circuits 45-1 to 45-n, n
Each of the time axis compression circuits 46-1 to 46-n performs signal processing, and the signal-processed video and audio data is output as serial data by the multiplexer 47. Therefore, transfer at n times the normal transfer rate is performed. The video and audio data of the speed can be serially output and temporarily recorded or stored in the storage device 22 at a speed of 1 / n of the normal processing time.

On the other hand, in the case where the high-speed transfer devices 21 and 26 are composed of VTRs and high-speed recording is carried out by the recording system, the video and audio data having a transfer speed n times the normal transfer speed are transferred to the demultiplexer in n units. Divided into video and audio data, n
Video and audio data to n time axis expansion circuits 32-
1 to 32-n, n ECC adding circuits 33-1 to 33-
n, n channel coding circuits 34-1 to 34
-N signal processing, and the signal-processed n video and audio data are xn recording / reproducing heads 38-1, 38-2,
... 38-2n (in this case, x is "2")
Since the rotating drum equipped with is rotated at a normal rotation speed and the magnetic tape 39 running at a running speed n times the normal running speed is scanned and recorded, it is n times the normal transfer speed. It is possible to record the video and audio data at the transfer rate of 1 to the magnetic tape 39 at a speed of 1 / n of the normal processing time.

Further, the demultiplexer 61 of the temporary recording or storage device 22 divides the video and audio data having a transfer speed n times the normal transfer speed into m video and audio data for each time slot, and divides them. The obtained m video and audio data are transferred to m disk drives 78-1 to 78
Record or store in the media set to -m,
The recorded or stored m pieces of video and audio data are integrated into one by the matrix switcher 65 (this one is, for example, one material unit, etc.), and this one video and audio data is output to the output interface circuits 23-1 to 23-1. 23-
The video and audio data from the video special effect mixer 25 supplied via the input interface circuit 24 or the audio data from the outside while being selectively supplied to k are converted into m video and audio data by the demultiplexer 75. The divided m pieces of video and audio data are recorded or stored in the media set in the disk drives 78-1 to 78-m, respectively, and the video and audio data recorded or stored in these media are recorded. Since it is read out and supplied to the multiplexer 81, and converted into serial data in the multiplexer 81 and output,
The editing efficiency can be greatly improved, the waiting time for the recording and reproducing processing can be at least 1 / n of the normal time, and the temporary recording or storage device 22 is interposed between the high speed transfer devices 21 and 26. Of the material to be edited are recorded or stored in each medium or one medium set in the disk drives 78-1 to 78-m, respectively, and a plurality of materials are recorded or stored in the temporary recording or storage device 22. Can be easily supplied to the video special effect mixer 25 in parallel for editing, and the operator can easily edit the same material many times.

Further, the output interface circuit 23-1
23-k, when the video and audio data are compression-encoded, the compression-decoding processing circuit 95 can perform the compression-decoding processing. Further, the input interface circuit 24 compresses the video and audio data. Since the encoding can be performed, the compression encoding for the video data can be selected and the editing work can be performed regardless of the selection. Further, in the above-mentioned example, the case has been described in which only the video data can be compression-encoded, but it will be apparent that the audio data can be compression-decoded similarly to the video data. As described above, in the editing system in which the compression encoding can be selected, if the compression encoding is performed, the recording or storage capacity of the temporary recording or the storage device 22 can be greatly increased in an equal manner.

When xn heads are mounted on the rotary drum and the normal transfer speed is required, the magnetic tape 39 is rotated at the normal running speed and the rotary drum is rotated at the normal rotational speed. Therefore, in the editing work, for example, confirmation, monitoring, etc. can be performed without adding a configuration therefor.

When xn heads are mounted on the rotary drum and the transfer speed of 1 / n of the normal transfer speed is required, the magnetic tape 39 is moved at the normal running speed and the rotary drum is normally moved. Since it is rotated at a speed of 1 / n of the rotation speed of, the more accurate editing result can be obtained by selecting video and audio data with few errors in the editing work.

In the above example, the video and audio data are described as the case of the NTSC system, but the system clock frequency and the recording / reproducing head 38 are used even in the PAL system, the SECAM system or the high definition television system.
This can be achieved by setting various parameters in each component such as the number of -1 to 38-2n, the number of rotations of the rotary drum, and the like. Of course, when the video and audio data is a high definition television system, the transfer rate can be further improved by using compression encoding and decoding processing.

[Fourth Embodiment]

In the third embodiment, the recording / reproducing heads 38-1, 38-2, ... Are attached to the rotary drum 200.
Although the case where 38-8 are arranged at equal intervals has been described, four groups may be arranged and two groups may be arranged so as to face each other. In this case, unlike the case of arranging at equal intervals, the timings of recording and reproducing are different for each set. As an effect, since the recording and reproducing timings by the four heads forming at least one group are the same, the processing is easy, and the mounting of the heads is performed for each group (four heads are mounted on one head mount). If it is), the assembly process can be simplified.

[Fifth Embodiment]

In the third embodiment, the case where the lead angle is set has been described. However, when the high-speed transfer device 21 reproduces the tape recorded at high speed at high speed, the lead angle remains the normal setting. Good.

[0316]

According to the above-described editing method of the present invention, the information to be edited is reproduced at a speed n times the normal reproduction speed and the information is output at a transfer speed n times the normal transfer speed. Information of a transfer rate n times the normal transfer rate is recorded or stored, the recorded or stored information is read at the normal transfer rate, and the read information of the normal transfer rate is subjected to predetermined signal processing. Information that has been subjected to signal processing is recorded or stored, information is read at a transfer speed n times the normal transfer speed, and information read at a transfer speed n times the normal transfer speed is read at the normal recording or storage speed. Since it is recorded or stored at n times the speed, when editing information, the information to be edited is played back, and the speed at which the playback information is transferred and the speed at which it is transferred after editing is greatly improved. Can be Les by, when applied to the editing system, it is possible provide an environment easy work to the operator, it is possible to significantly improve the editing accuracy and editing efficiency, for example, an addition to the edited material,
Flexibility in the editing process, such as performing various processes such as insert afterwards and recording or storing the editing material after that can eliminate the occurrence of so-called seams etc. on the finally obtained medium. The effect is that you can have it.

According to the above-described editing system of the present invention, the high-speed reproducing section reproduces the information to be edited at a speed n times the normal reproduction speed and the information at a transfer speed n times the normal transfer speed. The reproduction information from the high-speed reproduction section is output and recorded or stored in the recording or storage section. The information read out from the recording or storage section is subjected to predetermined signal processing in the signal processing section. When the information output and recorded or stored in the recording or storage unit is read, the read information is recorded or stored in the high-speed recording or storage unit at a speed n times the normal recording or storage speed. However, since the control unit controls the recording or storage unit, the signal processing unit, and the high-speed recording or storage unit, when the information is edited, the information to be edited is reproduced, and the speed at which the reproduction information is transferred and Edit It is possible to greatly improve the speed of data transfer and recording to an operator, and when this is applied to an editing system, it is possible to provide the operator with an environment in which it is easy to work and to greatly improve editing accuracy and editing efficiency. It is possible to eliminate the occurrence of so-called seams on the medium finally obtained by recording or storing the edited material after performing various processes such as addition and insertion on the edited material afterwards. Therefore, there is an effect that the editing process can be made more applicable.

Further, according to the editing system of the present invention described above, the high-speed reproducing section is constituted by the VTR or the disk drive, and the information recorded on the recording medium is reproduced by the head reproducing section equipped with one or a plurality of heads. Since the reproduction information processing means performs predetermined signal processing on the reproduction information from one or a plurality of heads, the reproduction, recording and transfer times at the time of editing should be n times the normal speed. Therefore, in addition to the above-described effects, there is an effect that accurate and efficient editing can be performed with a simple configuration and processing.

Further, according to the editing system of the present invention described above, necessary information is extracted from the reproduction information from one or a plurality of heads by one or a plurality of information extracting means,
The one or more extracted information from the one or more information extracting means is subjected to the channel decoding processing by the one or more channel decoding means, and the one or more channel decoding means are provided. Error correction of one or a plurality of output information from the device is performed by one or a plurality of error correction means.
One or more time axis compression of one or more outputs from one or more error correction means is performed by one or more time axis compression means, and the output from these one or more time axis compression means is In the case of a plurality of outputs, the plurality of outputs are converted into the original information unit by the multiplexer, so that the reproduction, recording, and transfer times at the time of editing can be set to n times the normal speed. It is possible to obtain a good processing result by performing predetermined signal processing on each of the outputs, and thereby to perform accurate and efficient editing with a simple configuration and processing in addition to the above effects. There is an effect that can be.

Further, according to the editing system of the present invention described above, the high-speed recording or storage unit is constituted by the VTR or the disk drive, and the recording information processing means determines the information of the transfer speed n times the normal transfer speed. Signal processing,
Since the head recording unit equipped with a plurality of heads records information at a transfer speed n times the normal transfer speed on the recording medium, signal processing is performed at a speed n times the normal speed for recording. It is possible to do this, in addition to the above effects,
There is an effect that accurate and efficient editing and recording can be performed with a simple configuration and processing.

Further, according to the editing system of the present invention described above, the information of the transfer rate n times the normal transfer rate is divided into a plurality of information units by the demultiplexer, and the time of the plurality of information from the demultiplexer is divided. The axis is expanded by a plurality of time axis expansion means, and error correction codes are added to a plurality of output information from the plurality of time axis expansion means by a plurality of error correction code addition means. Since the plurality of channel coding means performs the channel coding processing on the plurality of output information from the error correction code adding means, the reproduction, recording and transfer speeds can be increased to n times the normal speed. Signal processing can be performed even at speed, which allows accurate and efficient editing and recording with a simple configuration and processing, in addition to the effects described above. There is an effect that can be carried out.

Further, according to the editing system of the present invention described above, the high-speed reproducing unit and the high-speed recording or storing unit are configured as one device, and the high-speed reproducing and high-speed recording or storing are performed by this one device. It is possible to concentrate the input / output portion of the signal into one, which reduces the scale of the editing system in addition to the above-mentioned effects. For example, by concentrating the connection portion, connection mistakes are reduced and connection management is performed. Therefore, there is an effect that it is possible to facilitate the maintenance and setting of the editing system.

Further, according to the editing system of the present invention described above, when the input information is stored in the semiconductor memory unit, the write / read control means supplies the semiconductor memory unit with the control signal for writing, and the semiconductor memory unit is controlled. When reading the stored information from the unit, at least the input information is read by the writing / reading control unit so that the stored information can be read from the semiconductor memory unit at the transfer speed n times the normal transfer speed to the semiconductor memory unit. The semiconductor memory unit is supplied with a control signal for reading, which is n times as fast as the control signal for writing, which is used for storing in the semiconductor memory unit, and is n times as fast as the normal transfer rate read from the semiconductor memory unit. Since the reproduction information processing means performs the predetermined signal processing on the transfer rate information, even when the semiconductor memory unit is used, Raw, storage (recording in semiconductor memory other than semiconductor memory), and transfer can be performed at a speed n times faster than usual, and signal processing can be performed at this speed, which, in addition to the above-described effects, improves the efficiency of editing work in the editing system. It is possible to improve the performance and simplify the configuration of the editing system.

Furthermore, according to the editing system of the present invention described above, when the information of the transfer rate n times the normal transfer rate to be input is stored in the semiconductor memory unit, the normal transfer rate is set by the recording information processing means. Is subjected to predetermined signal processing, the write / read control means supplies a control signal for writing to the semiconductor memory section, and when the stored information is read from the semiconductor memory section,
In order that the read control means can read information from the semiconductor memory unit at a normal transfer speed, at least read control at a speed 1 / n times the write control signal used when storing input information in the semiconductor memory unit. Since the signal is supplied to the semiconductor memory unit, recording and transfer can be performed at a speed n times the normal speed, and at the time of reproduction, a reproduction signal at the normal speed can be obtained. In addition to the above-mentioned effects, there is an effect that a required transfer speed can be obtained with a simple configuration and simple processing, and editing work efficiency can be improved.

Further, according to the editing system of the present invention described above, the information of the transfer rate n times the normal transfer rate is divided into n pieces of information by the first demultiplexer, and the input information of the normal transfer rate is divided into the first piece of information. 2 demultiplexers divide it into n pieces of information, and each n from the first or second demultiplexer
The individual information is recorded or stored by the recording or storage means, the plurality of information read from the recording or storage means is selectively output by the matrix switcher, and the normal transfer read from the recording or storage means is performed. Since n pieces of information having a transfer rate n times the speed are converted into original information by the multiplexer and output, information of a transfer rate n times the normal transfer rate is recorded or stored, and recorded or stored. The information of the transfer rate n times the normal transfer rate can be read out and the information of the transfer rate n times the normal transfer rate can be output. By this, in addition to the above-mentioned effect, the data in the editing system can be read. Can be satisfactorily matched, and as a result, an editing system with high editing efficiency can be obtained.

Further, according to the editing system of the present invention described above, the first and second demultiplexers, the recording or storing means and the matrix switcher are connected between the first and second portions.
Since the same number of buses as the number of pieces of information from the demultiplexer, recording or storage means are connected and the time distribution of input / output information on the bus is controlled by the control unit,
Recording or storage in the recording or storage unit can be efficiently performed, and thus, in addition to the above effects, there is an effect that a plurality of processes, such as recording, reproduction, and editing, can be performed at the same time.

Further, according to the editing system of the present invention described above, a plurality of pieces of information from the first or second demultiplexer are recorded by the recording or storing means constituted by a drive having one or a plurality of disks or a semiconductor memory device. Alternatively, since it is stored, it is possible to easily and accurately perform processing such as recording or storing of a plurality of materials and editing of a plurality of recorded or stored materials. In the editing system, reproduction of the reproduction VTR is performed. It is not necessary to adopt the method of directly recording the information in the recording VTR. In other words, since the information and the editing work with the information can be performed purely, even if the information is finally recorded in the VTR, the so-called VTR may occur. The edit seam can be almost eliminated, so that in addition to the effects described above, multiple processes such as recording, reproducing, and editing can be performed at the same time. Preparative it is, it is possible to obtain a high edited tape accuracy.

Further, according to the editing system of the present invention described above, the material for editing is stored in the first area Ar1 set in the plurality of recording or storing means when the medium used in the recording or storing means is plural or the recording or storing means is plural. Since the recorded material is recorded or stored and the edited material is recorded or stored in the second area Ar2, it is possible to easily manage the material to be edited and the edited material. In addition to facilitating management of unedited material and edited material, for example, new edited material can be inserted or added to the entire edited material seamlessly, and the edited information obtained as a result can be edited, for example. When recorded on a video tape cassette or the like, there is an effect that a so-called seamless edited material tape can be obtained.

Further, according to the editing system of the present invention described above, the decompressing means provided between the output side of the recording or storage section and the input side of the signal processing section makes the transfer rate of n times the normal speed from the high speed reproducing section. The information is expanded in time, and the output of the signal processing unit or the input information from the outside is temporally compressed by the compression means provided between the input side of the recording or storage unit and the output side of the signal processing unit or the outside. As a result, the information of the transfer speed n times the normal speed recorded or stored in the recording or storage unit can be output so that it can be used in the signal processing unit, and the transfer of the transfer speed n times the normal transfer speed from the recording or storage unit. Output information at speed and supply to high-speed recording or storage unit,
It can be recorded or stored at high speed, which allows
In addition to the above effects, it is possible to use a device with a normal transfer rate for the editing system, and to obtain an editing system with high editing efficiency without having to make a new specification for this device or manufacture a device with this specification newly. The effect is that you can.

Further, according to the editing system of the present invention described above, the information of the transfer rate n times the normal transfer rate read from the recording or storage unit is stored in the buffer memory means, and the normal information from the buffer memory means is stored. The output information of the transfer speed is subjected to the variable speed reproduction processing means by the variable speed reproduction processing means, the output information from the variable speed reproduction processing means is outputted by the output means, and the reproduction control communication means is provided with the buffer memory means based on the control signal from the control section. Since the variable speed reproduction processing unit is controlled,
Information of a transfer rate n times the normal transfer rate recorded or stored in the recording or storage unit can be output at the normal transfer rate, which allows the decompression process in the editing system to be simple in addition to the above-described effects. There is an effect that can be done in.

Further, according to the editing system of the present invention described above, when the information of the transfer rate n times the normal transfer rate read from the recording or storage unit is compression-encoded, the buffer memory means and the Since the compression decoding processing means is provided between the variable speed reproduction processing means and the compression decoding processing means performs the compression decoding processing, the information of the transfer speed n times the normal transfer speed which is compression-encoded. In addition to the above-mentioned effect, there is an effect that even if the video and audio data is compressed and encoded, it can be used as a material in the editing process.

Further, according to the editing system of the present invention described above, the information of the normal transfer rate from the signal processing unit or the outside is inputted by the input means, and the output information from the input means is temporarily stored in the buffer memory. Since the input means and the buffer memory are controlled by the recording control communication means, the information on the normal transfer speed recorded or stored in the recording or storage unit is output at a transfer speed n times the normal transfer speed. As a result, in addition to the above-described effects, there is an effect that high-speed recording or storage can be performed in the recording or storage unit, and data of different transfer rates can be matched in the editing system.

Further, according to the editing system of the present invention described above, when the information of the normal transfer rate from the signal processing unit or the outside is compression-encoded, the compression encoding processing unit is provided between the input unit and the buffer memory. Since the compression encoding processing means performs the compression encoding, the capacity of the buffer memory can be reduced, the transfer rate can be improved, and the capacity per unit information used in the high speed recording or storage means ( (Recording or storage) can be minimized, and in addition to the above effects, there is an effect that the transfer rate and the recording or storage capacity per unit information in the editing system can be minimized.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of an editing method and system of the present invention.

FIG. 2 shows an example of a main part of a first embodiment of an editing method and system of the present invention, and the high speed transfer devices 21 and 26 shown in FIG.
It is a block diagram in the case of making into one apparatus.

3 is a configuration diagram of a temporary recording or storage device 22 shown in FIG. 1, showing an example of a main part of a first embodiment of an editing method and system of the present invention.

4 is a configuration diagram of an input interface circuit 24 shown in FIG. 1, showing an example of a main part of a first embodiment of an editing method and system of the present invention.

5 is a block diagram of an output interface circuit 23-1, 23-2, ... 23-k shown in FIG. 1, showing an example of a main part of a first embodiment of an editing method and system of the present invention. is there.

FIG. 6 is an explanatory diagram for explaining the relationship between a transfer format and a tape recording track pattern, which is used for explaining the first embodiment of the editing method and system of the present invention.

FIG. 7 is a timing chart for explaining signal processing in the recording system of the high-speed transfer device, which is used for explaining the first embodiment of the editing method and system of the present invention.

FIG. 8 is a timing chart for explaining the signal processing in the reproduction system of the high-speed transfer device, which is used for explaining the first embodiment of the editing method and system of the present invention.

FIG. 9 is a timing chart for explaining a high-speed transfer recording or storage operation in a temporary recording or storage device for explaining the first embodiment of the editing method and system of the present invention.

FIG. 10 is a timing chart for explaining a high-speed transfer reproduction operation in a temporary recording or storage device provided for explaining the first embodiment of the editing method and system of the present invention.

FIG. 11 is a timing chart for explaining the operation at the normal speed reproduction and recording in the input interface circuit 24, which is used for explaining the first embodiment of the editing method and system of the present invention.

FIG. 12 is a configuration diagram showing a configuration example of a main part of a second embodiment of an editing method and system of the present invention.

FIG. 13 shows an example of a main part of a third embodiment of the editing method and system of the present invention, and the high-speed transfer machines 21 and 2 shown in FIG.
It is a block diagram at the time of making 6 into one apparatus.

FIG. 14A is an explanatory diagram showing an example of mounting a recording / reproducing head on a rotary drum for explaining a third embodiment of the editing method and system of the present invention. B is an explanatory view for explaining a step of a rotary drum used for explaining a third embodiment of the editing method and system of the present invention. FIG. C is an explanatory diagram for explaining a lead angle provided for explaining a third embodiment of the editing method and system of the present invention. D is an explanatory view for explaining an example of a normal lead angle provided for explaining a third embodiment of the editing method and system of the present invention. E. Description for explaining an example of a lead angle four times the normal lead angle (that is, in the case of obtaining a transfer rate four times the normal transfer rate) for explaining the third embodiment of the editing method and system of the present invention It is a figure.

FIG. 15 is an explanatory diagram for explaining a relationship between a transfer format and a tape recording track pattern, which is used for explaining a third embodiment of the editing method and system of the present invention.

FIG. 16 is a timing chart for explaining the signal processing in the recording system of the high-speed transfer device, which is used for explaining the third embodiment of the editing method and system of the present invention.

FIG. 17 is a timing chart for explaining the signal processing in the reproducing system of the high-speed transfer device, which is used for explaining the third embodiment of the editing method and system of the present invention.

FIG. 18 is a block diagram showing an example of a conventional editing system.

[Explanation of symbols]

20, 29 Video tape cassette 21, 26 High-speed transfer device 22 Temporary recording or storage device 23-1, 23-2, ... 23-k, 98, 102
Output interface circuit 24, 111, 116 Input interface circuit 25 Video special effect mixer 27, 49, 157 Control unit 28 Operation unit 31, 61, 75 Demultiplexer 32-1, 32-2, ... 32-n, 151 Time axis expansion circuit 33-1, 33-2, ... 33-n, 152 EC
C (error correction code) addition circuit 34-1, 34-2, ... 34-n CHCOD
(Channel coder) 35-1, 35-2, ... 35-n Recording amplification circuit 36-1, 36-2, ... 36-n switch 37-1, 37-2 ,. 37-n, 37-n +
1, 37-n + 2, ... 37-2n Rotary transformer 38-1, 38-2, ... 38-n, 38-n +
1, ... 38-2n recording / reproducing head 39 Magnetic tapes 42-1, 42-2, ... 42-n reproducing / amplifying circuits 43-1, 43-2, ... 43-n data Extraction circuit 44-1, 44-2, ... 44-n CHDEC
(Channel decoder) 45-1, 45-2, ... 45-n, 163 Error correction circuit 46-1, 46-2, ... 46-n, 164 Time base compression circuit 47 Multiplexer 50, 76 158 system controller 52, 160 system clock / synchronization signal generation circuit 65 matrix switcher 78-1, 78-2, ... 78-m disk drive 80-1, 80-2, ... 80-m disk Controller 91-1, 91-2, ... 91-m Decoding and writing control circuit 92-1, 92-2, ... 92-m FIFO (first in first out memory) 94 Read control Circuit 95 Compression decoding processing circuit 96, 97 Variable speed reproduction processing circuit 100, 104 DA converter 107 Reproduction control communication controller Rollers 113 and 118 A-D converter 120 compression encoding circuit 121 the buffer memory 123 recording control communication controller 152 ECC (Error Correction Code) addition circuit 154 output control circuit 155 semiconductor memory 156 write / read circuit

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[Procedure amendment]

[Submission date] February 13, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0105

[Correction method] Change

[Correction content]

That is, when the configuration shown in FIG. 2 is applied to the high-speed transfer device 26 shown in FIG. 1, the error correction circuit 45-
As shown in the figure, the output terminal of 1 may be connected to the input terminal of the output interface circuit 41, and the output interface circuit 41 converts the data into the original data for output. With this configuration, for example, it is possible to connect a television monitor or the like to the output terminal 41a of the output interface circuit 41 and monitor the image projected on the tube surface.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0250

[Correction method] Change

[Correction content]

The recording data recorded on the magnetic tape 39 is recorded / reproduced by the recording / reproducing heads 38-1, 38-2, ...
38-n, ..., 38-2n are sequentially reproduced. Although not shown in FIG. 13, the recording / reproducing heads 38-1, 38-2, ... 38-n ,.
8-2n faces the rotary drum 180 degrees, and each recording / reproducing head 38-1, 38-2, ... 38-
n, ..., 38-2n are provided so as to be evenly spaced. As shown in FIG. 13, when the recording system and the reproducing system are configured as one VTR, the recording / reproducing heads 38-1, 38-2, ...
.. 38-2n may be mounted on the rotating drum, or the recording head and the reproducing head may be mounted adjacent to each other on the rotating drum. The running speed of the magnetic tape 39 is
Similar to the above, n times the normal running speed, the number of rotations of the rotating drum (the magnetic tape 39 and the recording / reproducing heads 38-1, 38).
, -38-n, ...- 38-2n), the transfer rate can be increased to n times the normal rate.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0258

[Correction method] Change

[Correction content]

That is, when the configuration shown in FIG. 13 is applied to the high speed transfer device 26 shown in FIG. 1, the error correction circuit 45 is used.
The output terminals of -1, 45-2, ... 45-n are connected to the input terminals of the output interface circuit 40 as shown in the figure, and the output interface circuit 40 converts and outputs the original data. Just do it. By doing so, it is possible to connect a television monitor or the like to the output interface circuit 40 and monitor the image projected on the screen.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0261

[Correction method] Change

[Correction content]

In the configuration shown in FIG. 13, the recording / reproducing heads 38-1, 38-2, ... 38-n ,.
Since -2n is 180 degrees opposite, the number of circuit systems in each of the recording system and the reproducing system is halved by switching every half rotation of the rotary drum.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0299

[Correction method] Change

[Correction content]

The video and audio data subjected to the error correction processing are supplied to the time axis compression circuits 46-1 to 46-4, respectively. The inputs 46I1, 46I2, 46I3 and 46I4 of the time axis compression circuits 46-1 to 46-4 are shown in FIG.

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Claims (22)

[Claims] 1. The information to be edited is reproduced at a speed n times the normal reproduction speed, the information is output at a transfer speed n times the normal transfer speed, and the transfer n times the normal transfer speed is performed. The information on the speed is recorded or stored, the information recorded or stored is read at a normal transfer speed, the read information on the normal transfer speed is subjected to predetermined signal processing, and the information subjected to the signal processing is recorded or The above information is stored and read at a transfer speed n times the normal transfer speed, and the information read at a transfer speed n times the normal transfer speed is recorded or stored at a normal recording or a speed n times the storage speed. An editing method characterized in that 2. A high-speed reproduction section for reproducing information to be edited at a speed n times the normal reproduction speed and outputting the information at a transfer speed n times the normal transfer speed; A recording or storage unit for recording or storing the reproduction information, a signal processing unit for performing a predetermined signal processing on the information read from the recording or storage unit, and an output from the signal processing unit for the recording or storage. When the above information recorded or stored in the storage unit is read out,
This read-out information is recorded at the normal recording or storage speed n.
It has a high-speed recording or storing section for recording or storing at double speed, a high-speed reproducing section, the recording or storing section, the signal processing section, and a control section for controlling the high-speed recording or storing section. Editing system. 3. A head comprising one or a plurality of heads for reproducing information recorded on a recording medium, when the high-speed reproducing section is composed of a VTR or a disk drive. 3. The editing system according to claim 2, comprising a reproduction section and reproduction information processing means for subjecting reproduction information from said one or a plurality of heads to predetermined signal processing. 4. The reproduction information processing means, one or more information extraction means for extracting necessary information from reproduction information from the one or more heads, and the one or more information. One or a plurality of channel decoding means for respectively performing a channel decoding process on one or a plurality of extracted information from the extracting means, and one or a plurality of these one or more channel decoding means Or one or more error correction means for error correcting the output information of one or more, and one or more error correction means for one or more outputs from these one or more error correction means. When there are a plurality of outputs from the time base compression means and one or more of the time base compression means, a multiplex for converting the plurality of outputs into the original information unit. Editing system according to claim 3, characterized in that configured in the grasses. 5. When the high-speed reproducing section is composed of a VTR and a transfer speed n times the normal transfer speed is obtained, the number of heads is x (where x is the normal transfer speed). The number of heads), the recording medium is run at a speed n times the normal running speed, and the rotary drum equipped with the x heads is rotated at a speed n times the normal speed. The editing system according to claim 3, wherein: 6. The high-speed reproducing section is composed of a VTR, and when a transfer speed n times the normal transfer speed is obtained, the number of heads is xn (where x is required at the normal transfer speed). The number of heads), the recording medium is run at a speed n times the normal running speed, and the head is scanned over the recording medium with the lead angle of the head being stopped. The number of tracks formed on the recording medium is nm (where m is a normal lead angle,
When the rotating drum is rotated once while the movement of the recording medium is stopped, it is set so as to straddle one head), and the rotating drum equipped with the above xn heads is rotated at a normal rotation speed. The editing system according to claim 3, wherein the editing system is adapted to perform the editing. 7. When the high-speed recording or storage unit is composed of a VTR or a disk drive, the high-speed recording or storage unit records information at a transfer speed n times the normal transfer speed on the recording medium. A head recording unit equipped with a plurality of heads, and recording information processing means for performing a predetermined signal processing on the information of the transfer speed n times the normal transfer speed. The editing system according to item 2. 8. A demultiplexer for dividing the information of the transfer rate n times the normal transfer rate into a plurality of information units, and a time axis of the plurality of information from the demultiplexer. A plurality of time axis expansion means, a plurality of error correction code adding means for adding an error correction code to each of a plurality of output information from the plurality of time axis expansion means, and a plurality of these error 8. The editing system according to claim 7, comprising a plurality of channel coding means for performing a channel coding process on a plurality of output information from the correction code adding means. 9. When the high-speed recording or storage unit is composed of a VTR and information of a transfer speed n times the normal transfer speed is recorded, the number of heads is x (where x is a normal transfer speed). The number of heads required for the speed), the recording medium is run at a speed n times the normal running speed, and the rotating drum equipped with the x heads is a speed n times the normal running speed. The editing system according to claim 7, wherein the editing system is rotated by. 10. The high-speed recording or storage unit is constituted by a VTR, and when recording information at a transfer rate n times the normal transfer rate, the number of heads is xn (where x is a normal transfer rate). The number of heads required for the speed), the recording medium is run at a speed n times the normal running speed, and the lead angle of the head is stopped by the head while the running of the recording medium is stopped. When the number of tracks formed on the recording medium is n nm (where m is a normal lead angle and the rotating drum is rotated once while the movement of the recording medium is stopped) 8. The editing system according to claim 7, wherein the number of tracks that one head straddles is set so as to straddle, and the rotating drum having the xn heads is rotated at a normal rotation speed. 11. The editing system according to claim 2, wherein the high-speed playback unit and the high-speed recording or storage unit are configured as one system. 12. The high-speed reproduction section supplies a semiconductor memory section for storing input information, and a control signal for writing to the semiconductor memory section when the input information is stored in the semiconductor memory section, When the information stored in the semiconductor memory unit is read out, the information stored in the semiconductor memory unit at a transfer rate n times the normal transfer rate can be read out from the semiconductor memory unit.
Write / read control means for supplying to the semiconductor memory unit at least a read control signal at a speed n times that of the write control signal used when storing the input information in the semiconductor memory unit, and the semiconductor memory unit. 3. A reproduction information processing means for performing a predetermined signal processing on the information of the transfer speed n times the normal transfer speed read from the device.
Editing system described. 13. A high-speed recording or storage means, a semiconductor memory unit for storing information of a transfer rate n times the normal transfer rate to be input, and a transfer speed n times the transfer rate of the normal transfer rate. When input information is stored in the semiconductor memory unit, a control signal for writing is supplied to the semiconductor memory unit, and when the stored information is read from the semiconductor memory unit, information is transferred from the semiconductor memory unit at a normal transfer rate. And a reading control signal for supplying to the semiconductor memory unit at a speed 1 / n times as high as a writing control signal used when storing the input information in the semiconductor memory unit so that 3. The editing system according to claim 2, further comprising a control means and a recording information processing means for performing a predetermined signal processing on the information of the normal transfer speed. Stem. 14. A first demultiplexer for dividing the information of the transfer rate n times the normal transfer rate into a plurality of pieces of information, and a plurality of input information of the normal transfer rate in the recording or storage section. A second demultiplexer for dividing the information into a plurality of pieces of information, a recording or storing means for recording or storing a plurality of pieces of information from the first or second demultiplexer, and a read out from the recording or storing means A matrix switcher for selectively outputting a plurality of pieces of information, and a multiplexer for converting a plurality of pieces of information having a transfer rate n times the normal transfer rate read from the recording or storage means into original information and outputting the original information. 3. The editing system according to claim 2, wherein the editing system comprises: 15. The number of pieces of information from the first or second demultiplexer, the recording or storage means and the matrix switcher is the same as the number of pieces of information from the first or second demultiplexer or the recording or storage means. 15. The editing system according to claim 14, further comprising a control unit which is connected by the same number of buses and controls the time distribution of the input / output information on the buses. 16. The recording or storing means comprises a drive having one or a plurality of disks or a semiconductor memory device so as to record or store a plurality of information from the first or second demultiplexer. 15. The editing system according to claim 14, wherein: 17. A medium used in the recording or storage means or a plurality of recording or storage means, a plurality of recording or storage means, a first area for recording or storing material for editing, and an edited material. 2. The second area for recording or storing
4. The editing system described in 4. 18. Decompression means for temporally decompressing information at a transfer rate n times the normal rate from the high-speed reproduction section between the output side of the recording or storage section and the input side of the signal processing section, A compression means for temporally compressing the output of the signal processing unit or the input information from the outside is provided between the input side of the recording or storage unit and the output side of the signal processing unit or the outside. The editing system according to claim 2. 19. A buffer memory means for storing the information of a transfer speed n times the normal transfer speed read from the recording or storage unit, and the normal transfer speed from the buffer memory means. Variable speed reproduction processing means for performing variable speed reproduction processing on the output information of the variable speed output processing means, output means for outputting the output information from the variable speed reproduction processing means, the buffer memory means, the variable speed reproduction processing part based on the control signal from the control section. 19. The editing system according to claim 18, further comprising a reproduction control communication unit for controlling the. 20. Between the buffer memory means and the variable speed reproduction processing means when the information of the transfer rate n times the normal transfer rate read out from the recording or storage section is compression-encoded. 20. The editing system according to claim 19, further comprising compression decoding processing means. 21. The compression means, input means for inputting information of a normal transfer rate from the signal processing section or the outside, a buffer memory for temporarily storing output information from the input means, 19. The editing system according to claim 18, comprising an input means and a recording control communication means for controlling the buffer memory. 22. A compression encoding processing means is provided between the input means and the buffer memory when compression encoding the normal transfer rate information from the signal processing section or the outside. Item 21. The editing system according to Item 21.