JPH05191774A - High speed dubbing device - Google Patents

Abstract

PURPOSE:To use a conventional peripheral equipment and to obtain a video signal with high picture quality only through a simple addition circuit by having only to apply minor revision to a general-purpose VTR so as to use the VTR for a master VTR. CONSTITUTION:One of two master tapes on which same information is recorded is loaded respectively to master VTRs 1,2, they are driven synchronizingly and reproduced at a different phase at a speed twice that of the variable mode to inhibit the signal processing of the variable mode. Video information for two tapes is inputted to a rate converter 4 together with information 9 relating to vertical and horizontal and chrominance subcarrier phase, the result is subject to time axis compression 10,11 to a half at the recording, converted into consecutive video information according to the recording order on the master tape, to which a composite synchronizing signal 13 and a burst signal generated by the vertical/horizontal and chrominance subcarrier phase information are added (14). Thus, the signal of the same form as the signal subject to on-track reproduction at a double speed is obtained and processed into a recording form of the slave VTR and the result is outputted to a slave VTR 8 whose number of revolutions is increased twice.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high speed dubbing system for video tape dubbing.

[0002]

2. Description of the Related Art A conventional high-speed dubbing system (for example, 2
Double-speed dubbing) doubles the rotation speed of the master VTR cylinder and capstan during recording, plays the master tape on track, and doubles the rotation speed of the cylinder and capstan as in the master VTR. Generally, a method of dubbing at double speed in half the recording time of the master tape by recording with a slave VTR is generally used.

However, with the above configuration and method,
Master V of digital VTR with high image quality and high sound quality
When used as TR, 90-100 during normal playback
Since it has a high cylinder rotation speed of Hz, the rotation speed is 180 to 200H even when it is reproduced on-track at double speed.
You have to raise it to z. When the master tape is reproduced under such conditions, the vibration and durability of the cylinder, the contact state of the tape head and the frequency characteristic of the head are deteriorated, and the image quality and sound quality are deteriorated. In addition, it takes a huge development cost to solve them, so that it is difficult to put them into practical use within the framework of the conventional method, and the advantages such as high image quality and high sound quality of the digital VTR cannot be utilized. have.

As a method for solving the above-mentioned problems, a VTR having a high cylinder rotation speed during normal reproduction, such as a digital VTR, is used as a master VTR, and double speed dubbing is possible at a normal cylinder rotation speed. A dubbing system is proposed in Japanese Patent Application No. 3-64464.

In this double speed dubbing system, as shown in FIG. 7, N pieces (N is a positive integer, shown in FIG.
Then, N = 2) master tapes and one master tape each are loaded, and N master VTRs 1 and 2 for reproducing in different phases at a tape speed N times that at the time of recording.
And N discontinuous video or audio reproduction signals obtained from the N master VTRs are input, and 1 / N of the time of recording
And a rate converter 4 for outputting as one continuous video or audio signal which is time-axis compressed.

In FIG. 7 of the conventional example, 1 and 2 are sampled at a frequency (4 fsc) four times as high as a color subcarrier, and 8-bit quantized digital NTSC video signals are digitally recorded on three tracks per field.・ Master VTR for playback, 3 for digital cable,
Reference numeral 4 is a rate converter for joining the reproduction data of the two master VTRs 1 and 2 into one, 5 and 7 are coaxial cables, 6
Is a distributor, and 8 is a slave VTR.

The conventional double-speed dubbing system configured as described above operates as follows.

First, the master tapes having the same contents recorded on the master VTRs 1 and 2 are loaded one by one, and a variable mode (a reproducing head is mounted on a piezo element to follow and control the recorded tracks). Phases different from each other, for example, different fields are reproduced in parallel at double speed of the variable speed reproduction mode). In this example, the master VTR1 is assigned to the reproduction of the odd field and the master VTR2 is assigned to the reproduction of the even field.

The state of the reproduction track at this time is shown in FIG. The upper part of FIG. 2 is the reproduction track of the master VTR 1, and the lower part is the reproduction track of the master VTR 2. Since the master VTRs 1 and 2 used in this example use three tracks for recording one field, three continuous tracks are a unit of reproduction. Therefore, during double speed reproduction in the variable mode, the tracks indicated by the three continuous solid lines in FIG. 2 are reproduced tracks, and the three continuous broken lines located between these solid lines are not reproduced. It is a playback track. That is, the master VTR1
Indicates that 1, 3, 5 fields are reproduced, and the master VTR 2 reproduces 2, 4, 6 fields.

Further, the master VTRs 1 and 2 reproduce the fields assigned at the timings shown in the upper and middle stages of FIG. The horizontal axis of FIG. 8 is time (seconds), T is the field cycle 1 / 59.94 seconds, and the upper row is the master VTR1.
Data input from and its field number,
The middle row shows the data input from the master VTR 2 and its field number. Taking 0 seconds to T seconds as an example, it indicates that the master VTR 2 causes the master VTR 2 to simultaneously reproduce the field 2 in synchronization with the reproduction timing of the field 1.

The data output from the master VTRs 1 and 2 in this manner is transmitted to the rate converter 4 via the digital cable 3, respectively.

The rate converter 4 is composed of a field memory, its control circuit and process circuit, and a D / A converter, and one word reproduced by the input master VTRs 1 and 2 has a rate of 8 bits and 4 fsc. The video data, which is parallel data, is stored in the field memory at a rate of 4 fsc, and the data for 2 fields is sequentially read at a rate of 8 fsc for 1 field cycle using a read clock (8 fsc) that is twice the sampling clock. Read out.

In this manner, as shown in the lower part of FIG. 8, the output of the rate converter 4 is a signal obtained by time-compressing the data input one field period T seconds before to 1/2 and joining the data. can get. A sync signal and a color burst signal are added to the video data thus read by a process circuit, converted into an analog video signal by a D / A converter, and output.

[0014]

The order of video signals reproduced from a VTR that performs variable speed reproduction by a piezo element or the like cannot be obtained in the correct field order (including color frames) as in normal reproduction. From the VTR, it is necessary to output such a reproduction output in the correct field and output it. To this end, the luminance signal and the color signal are separated, the color signal is demodulated, and when odd and even, the odd field and the even field are converted by line complement, and the color signal is re-modulated so that it becomes a regular color frame. Then, the correct field order is added by adding the luminance signal, and the composite synchronizing signal and the burst signal are added and output.

When a general-purpose broadcasting / commercial VTR is used as the master VTR of the double-speed dubbing system shown in FIG. 7, the rate converter receives the output as described above, separates the luminance signal and the color signal again, and outputs the color signal. 1 after demodulating
/ 2 time-axis compression and normalize the order of odd / even fields, time-axis compression to 1/2 to obtain continuous luminance and chrominance signals, and luminance signal corresponding time-axis compression composite synchronization A signal is added, the color signal is modulated in a form that matches the input form of the slave VTR, and a corresponding time axis compression burst signal is added and output.

In such a configuration, both the master VTR and the rate converter separate the luminance signal / color signal, and perform the color demodulation /
Since the field is normalized by the modulation and the line complement, the image quality is deteriorated and the rate converter becomes complicated.

The present invention solves such problems and provides an apparatus capable of high-speed dubbing with a simple structure and high image quality.

[0018]

In order to solve this problem, a high speed dubbing apparatus of the present invention is an N number of recording the same information in the same form without separating a composite video signal into a luminance signal and a chrominance signal. (N is a positive integer) From each of the N master VTRs equipped with one master tape, a synchronous operation is performed at a tape speed N times that of normal reproduction and at different phases, and one reproduction unit per N reproduction unit. In proportion, the means for reproducing the video information without the process of separating the luminance information and the color information, and the N master VTRs, the N master Vs respectively
The video information including the luminance information and the color information, which is the reproduction output of the TR, and the information for associating the vertical / horizontal position of one reproduction unit of the video information and the phase of the color sub-transport, are received from the N master VTRs. Each of the N discontinuous video information obtained is time-compressed to 1 / N of the master tape recording time, joined together, and the original video information is time-compressed to 1 / N to form one continuous video. As well as information, the vertical
A composite sync signal and a burst signal, which are created from horizontal position and color subcarrier phase information and which match the continuous time-axis compressed video information, are added, processed into a recording form of the slave VTR, and output to the slave VTR. Rate conversion means.

Further, the high-speed dubbing apparatus of the present invention uses N (N is a positive integer) master tape in which the same information is recorded in the same form without separating the composite video signal into the luminance signal and the color signal. From each of the N master VTRs mounted one by one, in synchronous operation, at a tape speed N times that of normal reproduction, at mutually different phases, at a ratio of 1 reproduction unit to N reproduction units,
A means for reproducing the video information without the process of separating the luminance information and the color information, and N master VTRs are used to control the respective N
The video information including the luminance information and the color information, which is the reproduction output of the master VTR of one unit, the information for associating the vertical / horizontal position of one reproduction unit of the image information and the phase of the color sub-conveyance, are received. After separating N pieces of discontinuous video information obtained from the master VTR into luminance information and color information, they are time-axis-compressed to 1 / N of the master tape recording time, respectively, and are joined together to obtain the original video information. One piece of continuous luminance information obtained by time-compressing the luminance information into 1 / N and one piece of continuous color information obtained by temporally compressing the color information in the original video information into 1 / N, , A composite synchronizing signal created from the vertical / horizontal position information that matches the continuous time-axis-compressed brightness information is created in the brightness information, similarly from the vertical / horizontal position and color subcarrier phase information. , The continuous time-axis compressed color The burst signal matches the broadcast added to the color information, by processing the recording format of the slave VTR, has a rate converting means for outputting the slave VTR, a.

[0020]

With the above-described structure, the high-speed dubbing apparatus of the present invention is capable of recording N master tapes on which the same information is recorded.
A master VTR reproduces a high quality image without separating it into luminance information and color information at different speeds at N times speed.
Receiving information for associating the vertical / horizontal position of one reproduction unit of the reproduced video information and the phase of the color sub-carrier, based on this information, the rate converter converts each of the N discontinuous reproduction signals into 1 / N. It is possible to perform time axis compression and splice in a regular order, add a composite sync signal and a burst signal that match the time axis, and easily process and output in a recording form of the slave VTR.

Further, the high-speed dubbing apparatus of the present invention provides a high image quality without separating the N master tapes on which the same information is recorded into the luminance information and the color information by N master VTRs at N times speed and at different phases. , And separates N pieces of discontinuous video information obtained from N master VTRs into luminance information and color information in a rate converter, and then reproduces the vertical and horizontal positions of one reproduction unit of the reproduction video information. Receives information that correlates the phase of color sub-transport, and based on this information,
One of the N discontinuous reproduction luminance information and reproduction color information is time-axis compressed to 1 / N and the luminance information in the original video information is time-axis compressed to 1 / N when joined in a regular order. Of continuous luminance information and color information in the original video information
A single continuous color information that is time-axis-compressed to N, and a composite synchronization signal that matches the continuous time-axis compressed luminance information is used as the luminance information, similarly, the vertical / horizontal position and the color. It is possible to add a burst signal, which is created from the sub-carrier phase information, and which matches the continuous time-axis compressed color information, to the color information, and easily processes and outputs it in the recording form of the slave VTR.

[0022]

EXAMPLE An example of the present invention (NTSC signal 2
An example of double-speed dubbing) will be described with reference to the drawings.

In FIG. 1, reference numerals 1 and 2 are digital recording / reproducing of 8-bit-quantized digital NTSC video signal sampled at a frequency (4 fsc) which is four times as high as that of a color subcarrier, with 3 tracks per field. A master VTR, 9 is a reference video signal, 4 is a rate converter for splicing playback data of two master VTRs 1 and 2 into one, and partly processing the signal to the input form of the slave VTR, 10 and 11 are time Axial compressor, 13 is a synchronizing signal and burst signal generator, 15 is a Y / C separator for separating a luminance signal (Y) and a chrominance signal (C), 16,
18 is a D / A for converting a digital signal into an analog signal
A converter, 17 is a low frequency converter for converting the frequency of the color signal to a low frequency band, 19 is a frequency modulator for frequency modulating the luminance signal,
6 is a distributor and 8 is a slave VTR.

The operation of the high-speed dubbing system of this embodiment having the above-mentioned structure will be described below.

First, the master tapes having the same contents recorded on the master VTRs 1 and 2 are loaded one by one, and a variable mode (a reproducing head is mounted on a piezo element to follow and control the recorded tracks). Phases different from each other, for example, different fields are reproduced in parallel at double speed of the variable speed reproduction mode). In this embodiment, the master VTR 1 is used for reproducing the odd field,
The master VTR2 is assigned to play even fields. This applies a common reference video signal 9 to the master VTRs 1 and 2 and synchronizes with the time code recorded on the tape, and VTR1 is an odd field and VT.
R2 is formed by controlling the piezo element so as to perform on-track in the even field.

The state of the reproduction track at this time is shown in FIG. The upper part of FIG. 2 is the reproduction track of the master VTR 1, and the lower part is the reproduction track of the master VTR 2. Since the master VTRs 1 and 2 used in this embodiment use three tracks for recording one field, three continuous tracks are a unit of reproduction. Therefore, during double speed reproduction in the variable mode, the tracks indicated by the three continuous solid lines in FIG. 2 are reproduced tracks, and the three continuous broken lines located between these solid lines are not reproduced. It is a playback track. That is, the master VTR
1 plays 1, 3, 5 fields, master VTR 2
Indicates that 2, 4, 6 fields are reproduced.

FIG. 3 shows the relationship between the applied reference video signal and the field timing of the signals reproduced from the respective master VTRs 1 and 2. The horizontal axis in Figure 3 is time (seconds)
Where T is the field period 1 / 59.94 seconds, FIG. 3 (a) is the field number of the reference video signal, FIG. 3 (b) is the data reproduced from the master VTR 1 and its field number, and FIG. 3 (C) is The data reproduced from the master VTR 2 and its field number are shown. Taking 0 seconds to T seconds as an example, it indicates that the master VTR1 and the master VTR2 simultaneously reproduce the field 1 and the field 2 in accordance with the field 1 of the reference video signal. FIG. 4 shows this relationship in detail up to the line number. Similar to FIG. 3, FIG. 4 (a) is a field number and line number of the reference video signal, FIG. 4 (b) is data reproduced from the master VTR 1 and its field number and line number, and FIG. 4 (C) is a master VT.
The data reproduced from R2 and its field number and line number are shown. In addition, in the case of NTSC signal, 4
As the color frame makes one round in the field, Fig. 3 (a)
The field numbers in FIG. 4 are displayed by repeating 1 to 4. During double speed playback,
Also, as shown in FIG. 4, there is a place where the even and odd of the field of the reference video signal and the field of the reproduced data do not match. In this case, if the line of the odd-even inverse field, which is one line below the line of the reference video signal, is read, the output having the relationship shown in FIG. 4 is obtained.

In the master VTR, despite the double speed reproduction, it is controlled so as not to perform line complement and color signal demodulation / remodulation processing, and the composite sync signal generated from the reference video signal is used as it is. And the burst signal with or without the addition of the burst signal (shown in FIG. 4 (a)), the timing relationship between the synchronizing signal and the video data is kept normal.

The rate converter 4 receives the video information and the reference video signal thus reproduced from each master VTR. Here, the vertical / horizontal position information of the reproduced video data is defined by the reference video signal, and the phase of the color subcarrier is determined from the color field of the reference video signal according to the relationship of FIG. The field has been decided and can be learned from this.

The rate converter 4 operates as follows. The video information input from the master VTRs 1 and 2 is
The signal is guided to the time axis compressors 10 and 11, and the time axis is compressed to ½ to form a continuous signal as shown in FIG. At this time, as a start / end timing of compression (timing of writing / reading to / from the memory), a signal generated from the color frame information (field number) and vertical information in the reference video signal is used to generate a field from the master VTR1. The field 2 from the master VTR 2 is read next to 1, the field 3 from the master VTR 1 and the field 4 from the master VTR 2 are read so that the lines are also continuous, and as shown in FIG. The timing control is performed so that the video information of (1) is halved on the time axis to be continuous information. The information thus obtained retains the relationship of vertical / horizontal and color phases as they are recorded, and is compressed to 1/2 only in the time axis.

On the other hand, from the reference video signal, the sync signal / burst signal generator 13 generates a composite sync signal and a burst signal corresponding to the video information which is time-axis compressed and continuous. This is easy because the relationship between the field number of the reference video signal and the field number of the compressed video information is as shown in (a) and (d) of FIG. 4 and the detailed timing of reading during compression. Can be created.

The synchronizing signal and the burst signal thus created are added to the compressed video information by the adder 14 and Y /
It is guided to the C separator 15 and the luminance signal (Y) and the color signal (C)
, The luminance signal is converted into an analog signal by the D / A converter 16, and the chrominance signal is converted into VHS or S-VH.
In the case of being supplied to a slave VTR such as S, it is frequency-converted to a low frequency range, then converted into an analog signal by the D / A converter 18 and output.

The output luminance signal of the rate converter 4 is modulated by the frequency modulator 19, guided to the distributor 6 together with the low frequency conversion color signal, and supplied to the slave VTR 8.

Here, the case where the slave VTR receives the frequency-modulated luminance signal and the low-frequency-converted chrominance signal as inputs has been described. However, in the case of other forms of input, the rate converter is adapted accordingly. The output of can be changed or an interface can be provided. For example, when receiving a color signal that is not subjected to low frequency conversion, the low frequency converter 17 is unnecessary. Further, when the luminance signal is received without frequency modulation, the frequency modulator 19 is unnecessary and the Y / C
When receiving in the form of a composite video signal that is not separated, the output of the adder 14 may be D / A converted and output.

Further, in FIG. 1, the composite synchronizing signal and the burst signal are added to the information which is time-axis compressed and is made continuous,
A composite sync signal may be added to the luminance information after Y / C separation, and a burst signal may be added to the color information.

In the embodiment shown in FIG. 1, a method for supplying a reference synchronizing signal common to the master VTR to the rate converter 4 and producing a reference timing for time axis compression and a composite synchronizing signal / burst signal from this signal has been described. However, it is also possible to adopt a method in which the reference video signal is not supplied to the rate converter, or it is not necessary to supply all of the reference video signal to generate the reference video signal. In this method, a composite sync signal and a burst signal of a reference video signal are added to the video information output of the master VTR and then output, and the sync signal and the burst signal are separated by a rate converter, and the same processing as in FIG. 1 is performed. Is what you do. According to this method, at the time of output of the master VTR,
If the reproduced video information and the synchronization signal are placed at the same timing, the rate converter 4 can restore the correct timing even if there is a time lag between the two master VTRs or the transmission path.

At this time, at least horizontal position information is added to the video information output of the master VTR, and the vertical position of the reference video signal and the color frame (color subcarrier phase) are:
It may be created by inputting the reference video signal to the rate converter 4.

Further, in the above description, the relationship between the color frame of the reference video signal and the output fields of the two master VTRs is always constant, but the two VTRs are not strictly synchronized. The present invention can be applied even when this relationship is not necessarily specified. As an example of such a case, as shown in FIG. 5, it is assumed that the master VTR 2 reproduces the second field in the second field and the fourth field in the third field of the reference video signal. At this time, the rate converter 4 extracts the time code (VITC) recorded in the vertical blanking from the output video information of the master VTR, and specifies the time information and color frame of the reproduced video information from this information. .. From this information and the sync signal transmitted together with the reference video signal applied to the rate converter 4 or the reproduced video information,
A composite synchronizing signal and a burst signal to be added to a reference timing signal for time axis compression and a compressed signal are created. In this way, the time-axis-compressed and continuous video information at the timing shown in FIG. 5D and the composite sync signal and burst signal corresponding thereto can be obtained.

Here, the information indicating the color frame and time information of the reproduction signal is not limited to VITC, but may be any information superimposed on the video information.

Next, another embodiment of the present invention is shown in FIG.
It will be described with reference to the drawings. 6, the same numbers as those in FIG. 1 represent the same components and operate in the same manner. 20, 21
Is a Y / C separator, 22, 23, 24 and 25 are time axis compressors, and 28 is a sync signal and burst signal generator.

The operation of the high-speed dubbing system of this embodiment having the above structure will be described below.

The reproduction by the master VTRs 1 and 2 is shown in FIG.
The reproduction signal having the relationship shown in (a) to (c) of FIG. Rate converter 4
Then, first, the output signals of the respective master VTRs 1 and 2 are guided to the Y / C separators 20 and 21 and separated into luminance information (Y) and color information (C), and the luminance information is the time axis compressor 22. , 23, the color information is guided to the time axis compressors 24, 25, and luminance information and color information which are time axis compressed to 1/2 and made continuous are obtained, respectively.

On the other hand, the composite video signal and the burst signal corresponding to the time-axis-compressed luminance information and color information are created from the reference video signal applied to the rate converter 4 as in the embodiment of FIG. , The composite synchronizing signal is added to the luminance information by the adder 29, the burst signal is added to the color information by the adder 30, the luminance signal is converted to an analog signal by the D / A converter 16, and the color signal is In the case of being supplied to a slave VTR such as VHS or S-VHS, it is converted into an analog signal by the D / A converter 18 after being frequency-converted to a low frequency band and output.

The output luminance signal of the rate converter 4 is modulated by the frequency modulator 19, guided to the distributor 6 together with the low frequency conversion color signal, and supplied to the slave VTR 8.

According to this embodiment, the Y / C separator 20,
Since No. 21 is performed without time-axis compression, a general-purpose Y / C separation circuit or IC can be used, and since it operates at a lower frequency than the previous example, it is inexpensive and power consumption can be kept low. it can.

The modification of the input form of the slave VTR is the same as that of the embodiment of FIG.

Further, the reference video signal is not supplied to the rate converter, or even if it is supplied, the reference timing of the time axis compression and all the composite sync signal burst signals to be added are not created from the reference video signal, and the master VTR The method of using the composite sync signal and the burst signal of the reference video signal, which are transmitted in addition to the video information output, is also possible in the same manner as in the previous example.

Further, even in the case where the two VTRs are not strictly synchronized with each other, the VITC and information equivalent thereto can be used at the timing shown in FIG. 5 as in the previous example.

As described above, according to the present invention, the NTSC signal is set to 2
The case of dubbing at double speed has been described as an example, but the present invention is not limited to double speed even if other signal systems are used.
Needless to say, it is applicable even at double speed (N is an arbitrary positive integer).

[0050]

As described above, according to the present invention, a plurality of master VTRs and a rate converter are provided, and the master VTRs are provided.
The master VTR is converted from a general-purpose device so as to control not to perform variable-speed signal processing while playing the tape on-track to the recording track while increasing the tape feed speed. In the device, simple processing of compressing the playback signals from multiple master VTRs on the time axis and adding the corresponding composite sync signal and burst signal, and only the necessary processing, high image quality and conventional double speed dubbing system Master VTR in
It is possible to obtain a video signal of the same format as in the above, and it is not necessary to increase the number of cylinder rotations of a plurality of master VTRs, and stable dubbing at N times speed can be easily performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a high-speed dubbing apparatus according to an embodiment of the present invention.

FIG. 2 is a tape pattern diagram for explaining a reproduction track of a master VTR in the embodiment.

FIG. 3 is a time chart for explaining the operation of the high speed dubbing apparatus in the embodiment.

FIG. 4 is a detailed time chart for explaining the operation of the high speed dubbing apparatus in the embodiment.

FIG. 5 is a time chart for explaining the operation of the high-speed dubbing apparatus according to another embodiment of the present invention.

FIG. 6 is a block diagram showing a high speed dubbing apparatus according to another embodiment of the present invention.

FIG. 7 is a block diagram showing a conventional high-speed dubbing apparatus.

FIG. 8 is a time chart for explaining the operation of the high-speed dubbing apparatus in the conventional example.

[Explanation of symbols]

 1, 2 Master VTR 4 Rate converter 10, 11, 22, 23, 24, 25 Time axis compressor 13, 28 Sync signal / burst signal generator 20, 21 Y / C separator 6 Distributor 8 Slave VTR

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[Procedure amendment]

[Submission date] February 21, 1992

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Front page continuation (72) Kunio Suesada, 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Shinji Takemoto, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (9)

[Claims] 1. N master tapes (N is a positive integer) in which the same information is recorded in the same form without separating a composite video signal into a luminance signal and a color signal, and one master tape each. As a result, by synchronous operation, N units that reproduce video information at a tape speed that is N times that of normal reproduction and at different phases and at a rate of 1 reproduction unit per N reproduction units without passing through the process of separating luminance information and color information. Master VTR
And information for associating the video information including the luminance information and the color information, which is the reproduction output of each of the N master VTRs, the vertical / horizontal position of one reproduction unit of the video information, and the phase of the color sub-carrier. Then, the N pieces of discontinuous video information obtained from the N master VTRs are time-compressed to 1 / N of the time when the master tape was recorded, and the original video information was timed to 1 / N by connecting them. A single axially-compressed continuous video information, and a composite sync signal and burst signal created from the vertical / horizontal position and color subcarrier phase information that matches the continuous time-axis compressed video information. A high-speed dubbing device including a rate converter which is added to the slave VTR, processed into a recording format of the slave VTR, and output to the slave VTR. 2. The time-base compressed video information reproduced from N master VTRs and made continuous is separated into a luminance signal to which a composite synchronizing signal is added and a chrominance signal to which a burst signal is added, or further. The high-speed dubbing apparatus according to claim 1, which is processed and output to a slave VTR. 3. A common reference video signal is supplied to the N master VTRs and the rate converter, and a specific playback unit is played back from each of the N master VTRs corresponding to the color frame of the reference video signal. And a composite synchronizing signal and a burst signal corresponding to video information reproduced from N master VTRs are generated from the reference video signal supplied to the rate converter while being supplied to the rate converter. The high-speed dubbing apparatus according to claim 1. 4. A common reference video signal is supplied to N master VTRs, and a specific reproduction unit is reproduced from each of the N master VTRs corresponding to a color frame of the reference video signal, and the reproduction is performed. At least the horizontal position information of the signal is added, and the vertical position of the reference video signal and the information indicating the color frame are supplied to the rate converter. Based on the horizontal position information and the information of the reference video signal, N master VTs are output.
The high-speed dubbing apparatus according to claim 1, wherein a composite sync signal and a burst signal corresponding to the video information reproduced from R are created. 5. A common reference video signal is supplied to the N master VTRs, and the N master VTRs are synchronously operated based on the reference video signals to reproduce respective playback units from the N master VTRs. Then, it is supplied to the rate converter together with the vertical and horizontal position information of the reproduced signal, and the vertical and horizontal position information and the time information including the color frame superposed and recorded on a part of the reproduced video information are used to obtain N. The high-speed dubbing apparatus according to claim 1, wherein a composite sync signal and a burst signal corresponding to video information reproduced from one master VTR are created. 6. N (N is a positive integer) master tape in which the same information is recorded in the same form without separating a composite video signal into a luminance signal and a chrominance signal, and one master tape each. As a result, by synchronous operation, N units that reproduce video signals at a tape speed N times that of normal reproduction and at mutually different phases, at a ratio of one reproduction unit to N reproduction units, without passing through the process of separating the luminance signal and the chrominance signal. Of the master VTR and the video information including the luminance information and the color information, which are reproduction outputs of the N master VTRs, the vertical / horizontal position of one reproduction unit of the video information, and the phase of the color sub-carrier. After receiving the information to correlate, the output video information of each master VTR is separated into luminance information and color information, then time-axis compressed to 1 / N of the master tape recording time, respectively, and connected to obtain the original video information. Brightness information 1 / N time-compressed one continuous luminance information and color information in the original video information
A single continuous color information that is time-axis-compressed to N, and a composite sync signal that is created from the vertical / horizontal position information and that matches the continuous time-axis compressed luminance information is used as the luminance information. Similarly, a burst signal created from the vertical / horizontal position and color subcarrier phase information, which matches the continuous time-axis compressed color information, is added to the color information and processed into a slave VTR recording form. Slave V
A high-speed dubbing device including a rate converter for outputting to TR. 7. A reference video signal common to N master VTRs and a rate converter is supplied, and a specific reproduction unit is reproduced from each of the N master VTRs corresponding to a color frame of the reference video signal. And a composite synchronizing signal and a burst signal corresponding to video information reproduced from N master VTRs are generated from the reference video signal supplied to the rate converter while being supplied to the rate converter. The high-speed dubbing device according to claim 6. 8. A common reference video signal is supplied to N master VTRs, and a specific reproduction unit is reproduced from each of the N master VTRs corresponding to a color frame of the reference video signal, and the reproduction is performed. At least horizontal position information of the signal is added, and it is supplied to the rate converter together with information indicating the vertical position of the reference video signal and the color frame. From the horizontal position information and the reference video signal supplied to the rate converter, N 7. The high-speed dubbing apparatus according to claim 6, wherein a composite sync signal and a burst signal corresponding to the video information reproduced from one master VTR are created. 9. A common reference video signal is supplied to the N master VTRs, and the N master VTRs are synchronously operated based on the reference video signals to reproduce respective playback units from the N master VTRs. Then, it is supplied to the rate converter together with the vertical and horizontal position information of the reproduced signal, and the vertical and horizontal position information and the time information including the color frame superposed and recorded on a part of the reproduced video information are used to obtain N. 7. The high-speed dubbing apparatus according to claim 6, wherein a composite sync signal and a burst signal corresponding to the video information reproduced from one master VTR are created.