JPS62272695A - Magnetic picture recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain a component recording with the compatibility of VHS, Hifi standards completely maintained by providing two sets of video heads and a set of sound head in a home VTR. CONSTITUTION:In the VTR of the VHS and the Hifi standards having the head for the video of azimuth angle of + or -6 deg., the track width of about 30mum and the sound deep layer recording head of the azimuth angle of + or -30 deg., the track width of about 20 mum, another one set of the video heads 34-52 in which the azimuth angle is set to a value different from + or -6 deg. of the VHS standard is provided. In the recording of the sound at the time of the component recording, the sound head is used as it is to perform a deep layer recording, and the deep layer recorded sound signal and a superimposed video signal are defined to be an FM modulated color difference signal. For instance, since the track pitch of the VHF standard in an SP mode is 58 mum, the guard band of about 30 mum is formed between tracks recorded by the video head (azimuth angle of + or -6 deg., track width of about 30 mum). When a signal is recorded in this part by the video heads 34-52, the two types of the video signals can be simultaneously recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a magnetic recording and reproducing device (hereinafter referred to as VTR), and particularly relates to a recording device using the conventional chromaticity signal low-frequency conversion recording method. Playback and
YC) The present invention relates to a magnetic recording and reproducing apparatus in which recording and reproducing of a rack-separated component recording method can be selectively used in the same apparatus.

[Conventional technology]

Currently, the method for recording signals on magnetic tape in home VTRs is a chromaticity signal low frequency conversion recording method using a two-head helical scanning mechanism system.

Applied. This method uses FM modulated brightness.

(Y) Signal (carrier frequency 11Hj34~4.4MH3:
VHS.

standard) and low-pass converted chromaticity (C) signal (subcarrier).

1i'il wave number 5.58 M H2 color, 0.629
Conversion to MI-I□: VE (S standard) is frequency multiplexed and recorded on the same strunk of magnetic tape. Chromaticity signal low range.

The conversion recording method has the following problems.

(1) Reproduction due to cross-modulation distortion of Y signal and C signal.

A beat appears in the Y signal. 1゜(
2) When frequency multiplexing the Y signal and the C signal, the bands of both the Y signal and the C signal are limited by a filter in order to prevent components from being mixed into the signal frequency band of the other signal. At this time, high frequency components of both signals are lost.

(3) Since the C signal is recorded and reproduced in a form in which the subcarrier is vector modulated, hue changes occur due to time axis fluctuations of the device.

These problems arise because the Y signal and C signal are frequency multiplexed and recorded on the same trunk, and it is difficult to completely solve them using the chromaticity signal low-band conversion recording method.

A record to solve such problems.

The method is to put the Y signal and C signal on separate tracks.

Recording YC) When recording rack separation components.

There is a formula. This method demodulates the C5 signal into R-Y and B-Y color difference signals, as described in the Journal of the Television Society of Japan, December 19B2, p. 36-41.

RY and B-Y were time-division multiplexed and FM modulated.

and the FM modulated Y signal to separate channels.

It records on two independent tracks using RAD.

be. Therefore, the problems of the chromaticity signal low frequency conversion recording method mentioned above can be completely solved.

[Problem that the invention seeks to solve]

The component recording method mentioned above has been used in broadcasting up until now.

Since it was developed for business use, it was adapted to home VTRs.

No consideration has been given to application, and there is a problem in ensuring compatibility with conventional chromaticity signal low-band conversion recording methods.

Even if VTRs using the component recording method can produce high-quality images that solve the problems of conventional methods,
Playback of tapes recorded using conventional methods, as well as VTR, which is currently widely used in the conventional method.
It must be possible to exchange tapes with other users.

do not have. Therefore, components are included in home VTRs.

When applying the recording method, it must be compatible with the conventional method.

It is essential to ensure that

It is an object of the present invention to improve the conventional home VTR.

Combo with chromaticity signal low-frequency conversion recording that satisfies standards.

with the same head drum assembly/pre-recording.

After realizing this and ensuring compatibility with the previous version, we will combine it.

We aim to significantly improve image quality by applying digital recording.

The goal is to provide a means for

[Means for solving problems]

In the present invention, firstly, the azimuth angle is ±6°.

An image head with a track width of approximately 30 μm and an azimuth.

In a conventional VHS% Hi standard VTR with a head for audio recording with an angle of ±30° and a track width of about 20 μm, the azimuth angle is set to ±6° of the VHS standard.
Another set of video heads set to values different from the above is newly installed.

Second, a description of the audio signal during component recording.4
- Deep recording is possible using the conventional audio head as is.

Performs layer recording and superimposes it with the audio signal to be recorded deep.

The video signal to be used is an FM-modulated color difference signal.

By the above means, the above-mentioned object is achieved. .

[Function] 5 For example, in SP mode where 2 hours of recording is possible.

Is the track pitch of the VH8 standard 58 μm?

, conventional video head (azimuth angle ±6°, tiger.

Between the tracks recorded by a track width of about 50 μm).

A guard band with a width of about 60 μm is formed. If a signal is recorded using a newly installed video head in this part O,
It is possible to record two types of video signals at the same time.

can. Therefore, there are two types of video signals: Y signal and color.

If you assign the difference signal, you can separate the YCC and 2 controllers.

The Bonent recording method can be realized. Furthermore, by setting the azimuth angle of the newly installed video head to a value different from ±6°, guard pan-less operation is possible even during component recording.

By performing deep recording of audio signals during component recording in the same manner as in conventional city-fi standard VTRs, it is possible to record and reproduce high-quality audio. Also, record.

The color difference time axis compressed multiplex signal is compared to the Y signal.

Its frequency band is less than half. Therefore, the level of sideband waves in the low frequency region of the FM signal to be recorded.

, the color difference signal is lower (in other words, the carrier wave of the FM modulation signal to be recorded is in the low frequency region).

The FM modulation signal of the color difference signal is superimposed on the signal recorded.

If you select , crosstalk between superimposed signals will be reduced.

can be reduced.

[Example 1 10 Examples of the present invention will be described below with reference to the drawings. First, the relative mounting positions of the heads employed in the embodiments of the present invention will be described using FIGS. 2 to 8.

FIG. 2 is a plan view showing the head mounting position on the rotary head drum employed in the embodiment of the present invention in a VH8 Hifi standard VTR. 52 is a head mounting surface of the head drum, and the head drum rotates in the direction of the arrow. Also,
Although not shown, the magnetic tape runs at low speed in the same direction as the head drum. 35 is an image head (hereinafter H1+) with an azimuth angle of +6° and a track width (@ medium T) of 30 μm.
) So.

The mounting height of this head is H) in the figure as a reference of 0 μm.

Close to show the height of other heads (assembled head).

(the top of the drum assembly is 10). H1+?

The azimuth is located at a position of 037π [rad] in the rotational direction of the drum.

angle -30, T=20 μm, H=26.5 f
For im audio.

Attach the head (hereinafter referred to as A) 36. Also, H1+.

11iK, azimuth angle -θ0 (θ is H
1±, azimuth angle different from that of A-), T-30μ
m, H = 29 μm video head (hereinafter referred to as l-12-)
Install 34. (However, assuming that the direction of rotation of the head drum is positive, H2- is at a slightly negative position than H1+.) Similarly, F(1+, A-1112-
and Hl-head 38, A+head 33, H2 with inverse angles, namely -6°, +30°, and 100°, respectively.
+Attach the head 37 as shown. H1+55,
Hl-s8゜A+33, A-56c conventional) VO2H
The head has IFI standard recording and playback capability, and can be used in both SP mode for 2-hour recording and EP mode for 6-hour recording. In the component recording mode, [-■.

1+35, Hl-38, l-1s++37. H2
-34 with Y signal.

Color difference signals are recorded and played back separately, and the audio is A+3! l, A-
736 performs deep recording and reproduction.

In addition, according to the conventional VO2Hifi standard, the audio signal to be recorded deep and the video signal to be recorded superimposed thereon must satisfy the following conditions.

(Azimuth relationship between the superimposed video signal and audio signal: SP mode...reverse azimuth EP mode...same direction azimuth (2) Time difference S between the superimposed video signal and audio signal
P mode...0 to 2 fields EP mode...1 to 3 fields (SP mode,
(In both EP mode, audio signal precedes) These conditions were determined in consideration of crosstalk between the video signal and audio signal, timing deviation during compatible playback, and the like.

FIG. 5 shows the recording track of the head drum of FIG. 2 using the track pattern P13 Keyaki method. Tape speed 33.411111/S, ) H1+35, Hl-38 at 5P-e-de with rack pitch 58.8.μm,
The track pattern of A+33°A-36 is shown in Figure 5 (-
). The superimposed video signal and audio signal have opposite azimuths, and the audio signal is 037π[
rad] (difference in head mounting angle) In other words, it is recorded temporally in advance by 037 fields. Also,.

Tape speed 1i, 1m+/s, track pitch 19
E in μm.

81+35, Hl-38, A+33 in P mode
, A-36°0 track pattern is as shown in FIG. 5(b). child.

At the time of H1+55, Hl-58 width is 1174m,
In A+35'mA-36, portions with a width of 1 μm are recorded overlappingly, but the portion recorded first is a signal recorded later.

As a result, the track width is 19゜μ.
m, the superimposed video signal and audio signal have the same azimuthal direction, and the audio signal is 1.37.m larger than the video signal. .

π (rad), that is, 167 fields are recorded in advance in terms of time. Therefore, the Henodo drum shown in Fig. 2 can record and reproduce signals of the conventional VH8 Hifi standard, and there is no difference in compatibility with the conventional one. I understand.

Next, in the component recording mode.

H1+35, Hl-38, H2+37, H2-
54, A-1-33.

The A-36 track pattern indicates its tape speed.

When the conventional SP mode is used, as shown in FIG. 5(c).

It will be like that. H1+3(S, l-11-ss, H
2+57, H2-34,.

The recording tracks of are rewritten by overlapping each other by 1 μm, so each track is 29 μm, which is conbone.

Recording is done in the form of a guard pan dress. sound.

As in the case of sp mode, the voice signal is Hl +55,
H.

This is the opposite azimuth to the signal recorded at 1-38, which is 0.37πCrad), that is, it is ahead by 037 field.

From the above, the head drum shown in Figure 2 realizes component recording while ensuring complete compatibility with the conventional vH8Hifi standard, and furthermore, even when component recording, deep audio recording allows for good audio recording. Playback becomes possible.

Next, an embodiment using the rotary head drum shown in FIG. 3 will be described. 39 is the head mounting surface of the head drum, the head drum does not rotate in the direction of the arrow, 40 is the A+ head, 4
1 is H2-head, 42 is H1+.

43 is an A-head, 44 is an H2+ head, and 4°5 is an Hl-head. (1 in the diagram is the head.

The rank width and H indicate the mounting height of the head. )this.

FIG. 6 shows the recording track pattern by the head drum using the track pattern coordinate method. 6th
Figure (a) is SP mode, Figure 6 (b) is EP mode, HI+42, [(1-45, A+40, A-4)
This is the trunk pattern of each head of No. 3. Figure 6 (α)
and Fig. 6(b) are respectively Fig. 5(a) and Fig. 5(b).
) is equal to O (, Similar to the example shown in FIG. 2, the Ghent drum shown in FIG. 3 can also record and reproduce signals of the conventional VH8Hifi standard, and there is no problem with conventional compatibility.

Next, in the mode during component recording, H1+4
2, Hl-45, H2+44, H2-41, A
+40.

! 5 The recording pattern of each head of the A-43 is as shown in Figure 6 (C) when the tape speed is set to the conventional SP mode, and like the example in Figure 2, component recording without guard panning is performed. will be held. However, HI+42 and H2+44
And Hl-45 and H2-41 have head mounting angles that are different by 1.11.

This is because the recording track switches at the center of the screen for the signal.

Skew occurs. Therefore, Heradodra in Figure 3.

If component recording is performed using a system,

- Rough yield on the other hand during playback.

Processing such as delay is required.

From the above, the head drum shown in Figure 3 ensures complete compatibility with the conventional VH8Hifi standard.

After that, component recording is realized.

By deep recording audio even during component recording, good audio recording and playback is possible.

Ru.

Next, an example will be described that takes into account the long component recording time. FIG. 4 shows the head mounting position on the rotating head drum. 46 is a head mounting surface of the head drum, and the head drum rotates in the direction of the arrow. 47 is A+
Head, 48 is H2+ Herad, 49 is H1+ head, 5
0 represents the A-head, 51 represents the H2-head, and 52 represents the Hl-head. (・12・T in the figure shows the track width of the head, and H shows the installation height of the head. A+47 and H2+48, A-50 and H2-51 are installed very close to each other.) With this head drum. Record track pattern, track pattern.

FIGS. 7 and 8 are diagrams shown using the coordinate method.

Ru. Figure 7 (α) is sp mode, Figure 7 (b) is EP mode, H1+49, Hl-52, A+47,
To each of A-50.

This is a RAD track pattern. In Figure 7 (α).

The superimposed video and audio signals are in opposite azimuth directions.

Therefore, the audio signal is recorded ahead of the video signal by 0.5π (rad) or 1° by 0.5 fields. Further, in FIG. 7(b), the video signal and audio signal to be superimposed have the same azimuth, and the audio signal is 1.5π azimuthal than the video signal.

(rad) That is, 1.5 fields are recorded in advance.

Therefore, if the head drum in Figure 4 is used, the conventional VH8
It can be seen that Hi-Fi standard signals can be recorded and reproduced, and there are no problems with conventional compatibility.

Next, in the mode during component recording, H1+4
9, Hl-52, H2+48, H2-51, A
+47.

The track pattern of each head of the A-50 is as shown in FIG. The tape speed during component recording is equal to that in SP mode in Figure 8 (α), equal to 1/2 of that in SP mode in Figure 8 (b), and equal to 1/2 of that in SP mode in Figure 8 (0). It is equal to '/3 (= in the case of EP mode). In either case, H1+49°Hl-5
2, H2+48, H2-51 heads.

component records can be realized. Also, the tape speed is SP
Component recording is possible with any value from 1/3 to 1 times the mode. Note that, like the head drum in Figure 3, the head drum in Figure 4 has the two sets of video heads offset by i, so during recording, the Y signal delays one of the color difference signals by -field, and the reproduction is delayed. Sometimes it is necessary to perform processing such as delaying the other by an i field.

From the above, the head drum shown in FIG. 4 enables component recording between recorded poems that is the same as, or twice and six times as much as in the conventional SP mode.

In addition, in the case of FIG. 5(C), FIG. 6(C), the eighth factor (α), and FIG. 8(b), the video signal superimposed with the audio signal (H1+49 in FIG. 8(α), Hl-52, Figure 8 (
In b) LP++as.

It is desirable to record a color difference signal with a narrower frequency band than the Y signal in F(2-51) to reduce crosstalk between the superimposed signals.

Note that the azimuth angle ±r of the newly installed video heads H2+ and H2- is different from the azimuth angle ±6° of the conventional VH8 standard video head, as mentioned above, in order to realize guard pan-less during component recording. are different values. As a specific value, for example, the azimuth angle between the newly installed video head and the conventional standard video head is 1.
In order to maintain the angle at 2° or more, θ may be set to 18° or the like.

Next, an embodiment of the circuit of the present invention will be described.

FIG. 1 is a circuit block diagram showing an embodiment using the head drum shown in FIG. 2, for example.

H1+35, Hl-38, H2+37, H2-
34, A+53°A-36 are in the positional relationship shown in FIG. 27, 28, 29, 30 are
This is a switch that switches between conventional chromaticity signal low-frequency conversion recording and component recording. In the former case, the connection state shown in Figure 1 will be achieved, and in the latter case, the connection state shown in Figure 1 will be the same.
・The throat becomes connected in the opposite way.

When recording chromaticity signal low frequency conversion according to the conventional standard, the NTSC video signal input from terminal 1α is sent to AGC circuit 2.
The amplitude is kept constant with LPF3, and the color is fixed with LPF3.

After the luminance signal component is removed, the remaining luminance signal component is made to have a constant level at the top of synchronization by the clamp circuit 4, high-frequency emphasized by the pre-emphasis circuit 5, made into an FM modulation signal by the FM modulator 6, and is converted into an FM modulation signal by the HPF 7. The signal is added to the adder 13 after removing frequency components overlapping with the low frequency converted chromaticity signal, which will be described later.

On the other hand, the NTSC video signal input from terminal 1α is BP
It is also sent to F8, and only the chromaticity signal is extracted. After that, the burst level is made constant by the ACC circuit 9, and the low frequency conversion circuit 1 uses the output of the frequency conversion subcarrier oscillator 12.
0, frequency components overlapping with the previous FM-modulated luminance signal are removed and added to the adder 15. The sum of the FM modulated luminance signal and the low frequency converted chromaticity signal added by the adder 13 is then added to the recording amplifier 1.
After passing through 4, H1+35, Hl-1, 1
6.

It is recorded on the magnetic tape 31.

Also, the audio signal input from the terminal 1b is a shadow.

It passes through a high-frequency emphasis circuit 15 for improvement, and then passes through an FM modulator 16.
The signal is FM modulated by BPF 17, unnecessary signal components are removed by BPF 17, and then amplified by recording amplifier 18. A-3(S
Deep recording is performed on the magnetic tape 31 via the magnetic tape 31.

During component recording, the NTSC video signal input from the terminal 1a is converted by the decoder 19 into a luminance signal Y9, color difference signals R-Y, B-Y, and a horizontal synchronization signal 5Y.
Separated into NC. R-Y, B-Y are clock circuits 2
A clock signal whose phase is synchronized with 5YNC (synchronization signal) from 0 is time-division multiplexed in the time-base compression multiplexing circuit 21 as shown in FIG. 9(a), and 5YNC is added in the synchronization addition circuit 22. Further, Y passes through a 1H delay circuit 27 in order to correct the time delay (1 horizontal period=1H) due to time axis compression multiplexing of R-Y and B-Y. The relationship with the time-division multiplexed color difference signal is as shown in FIG. 9(b). After this, clamp circuits 23, 2B, pre-emphasis circuits 24, 29, and PM modulation circuits 25, 30 are used for both Y signal and color difference signal.
The Y signal whose spectrum is shown in 1o14(a) is ri2+37, l-12-34,
The color difference signal whose spectrum is shown in FIG. 10(b) is transmitted to the magnetic tape '
It is recorded in 51.

The audio signal is input from the input terminal 1b, and converted to A+3+ in exactly the same way as when recording the low frequency conversion of the chromaticity signal of the rabbit.

Deep recording is performed on the magnetic tape 31 via the A-36 head. Even during component recording, it is possible to record and reproduce high-quality audio using the rotating head.

In addition, in this embodiment, each spatula of A+33 and A-36
F(1+35, H) where Dotoso recording patterns are superimposed
Although the signal recorded and reproduced by each head of the 1-38 is an FM modulation signal of a color difference signal, it may of course be a Y signal. However, if color difference signals are selected as in this embodiment, interference with deep superimposed audio signals can be significantly reduced. The Y signal has a frequency band of 4MH2 or more in the case of an NTSC signal, but the color difference signal has a frequency band of at most 2MH2 even after time-division compression multiplexing.
M [(Z band is sufficient for home use.

Therefore, as conceptually shown in FIGS. 10(a) and 10(b), the sideband of the FM modulation signal of the color difference signal is much narrower than that of the Y signal.

Even if the FM modulation signal of the audio signal is deeply recorded on the low frequency side, the mutual interference can be significantly reduced. Note that the time axis compression of I(-Y, B-Y is performed at the time of writing in a transfer element such as a CCU.

This is achieved by taking advantage of the fact that if the signal is read out at a clock frequency twice that of the clock frequency, the time can be compressed to 7 times.

As an example of a circuit for reproduction, FIG. 11 shows a block diagram of a reproduction circuit for component recording.

Y signal 1 color difference signal recorded on magnetic tape 31.

The audio signal is H1+35 r H1=38 r H2
+57 T H2-s4, A+33, A-3(
S is read out by each head of S, and regenerative amplifiers 53 and 5
4, 55, 56, 57, and 58. These signals are converted into continuous signals by switches 59, 62 and 67 according to the rotational phase signal of the head drum input from the terminal 74, and demodulated by F19/M demodulators 60, 65 and 68, respectively. . The audio signal is then sent to the noise reduction circuit 61 to correct the high-frequency emphasis during recording to improve the signal-to-noise ratio, and is output from the terminal 75b. Also FM demodulated Y signal.

The and color difference signals pass through de-emphasis circuits 64 and 69 and are applied to a time base correction circuit (TBC) 72.

Ru. Inside the TBC, a clock generation circuit 66, 71 is generated based on the horizontal synchronization signal separated by synchronization separation circuits 65 and 70.
A clock whose phase is synchronized with the horizontal synchronization signal generated by

The time axis correction of the Y signal and the color difference signal is performed using the check signal and the reference synchronization signal inputted from the terminal 76. Furthermore, within the TBC, time expansion of color difference signals and R-Y, B-Y
The Y signal is delayed by 2H in order to correct the time delay (2H) of the color difference signal that accompanies this separation. The Y, R-Y, and B-Y signals output from the TBC are sent to the encoder 73.
This results in a normal NTSC video signal, which is output to the terminal 75α. Note that the color difference signal is expanded using C
This is achieved by taking advantage of the fact that in a transfer element such as a CD, if a signal is read and output at a clock frequency that is -20.

The embodiment of the circuit shown here is for the head drum of FIG. 2, but also for the heads of FIGS. 3 and 4.

In the case of drums, the above-mentioned ski measures when recording components (Y signal or color difference during recording).

Either one of the signals is delayed by 7 fields, and the other signal is delayed by i fields during playback).

This circuit example can be applied as is except for the addition of .

can. 1
- In the embodiments described above, the color difference signal is R-Y.

B-Y and time-division compression multiplexing is shown, but this is not a limiting condition of the present invention. The color difference signal may be a ■ signal or a Q signal. Further, the FM modulation signal of the color difference signal may be frequency multiplexed. Further, the color difference signal may be recorded as a line sequential signal every 1H.

In addition, although the embodiment uses an NTSC video signal, PAL,
SECAM and MAC are also applicable.

Further, in the embodiment, the audio recording signal is an FM modulated signal, but it may be a PCM modulated signal, or it may be a frequency multiplexed signal.

〔Effect of the invention〕

As described above, the present invention provides a home VTR with two sets of video heads and one set of audio heads.

This provides a means to enable new component recording with the same head drum assembly while maintaining compatibility with the conventional VH8Hifi standard. If the head drums shown in FIGS. 2, 3, and 4 are applied to a conventional VH8Hifi standard VTR, component recording becomes possible while maintaining compatibility with the conventional VTR. During component recording, problems such as cross-modulation distortion, deterioration of high-frequency signal components, and hue change during conventional chromaticity signal low-frequency conversion recording are resolved, and high-quality recording and reproduction becomes possible.

Furthermore, by setting the azimuth angles of the two sets of video heads to different values, guard pan-less operation is also possible during component recording. Furthermore, since deep recording of audio signals is possible even during component recording, good audio recording and playback can be achieved. Further, if the video signal to be recorded in a superimposed manner with the audio signal is a color difference signal having a narrower frequency band than the 23. luminance signal, crosstalk between the superimposed signals can be reduced.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram showing one embodiment of the present invention, and FIG.
Figures 3 and 4 are plan views, respectively, of head mounting surfaces employed in embodiments of the present invention, Figures 5, 6, and 7.
8 is a track pattern diagram in an embodiment of the present invention, FIG. 9 is a waveform diagram of a recording signal in an embodiment of the present invention, FIG. 10 is a spectrum diagram of a recording signal in an embodiment of the present invention, and FIG. The figure is a circuit block diagram showing another embodiment of the present invention. 19... Decoder, 21... Time axis compression multiplex circuit,
34.35, 37, 38, 41.42, 44, 45.4
8.49, 51.52... Video head, 35.66.40, 43, 47.50... Audio head, 72... Time axis correction circuit, 73... Encoder. 5η (α) (b) One-stroke angle of eclipse [r-] 6 areas 43 large W yo human-Japanese people 6 E

Claims (1)

[Claims] 1. In a magnetic recording and reproducing device that records audio information using a magnetic head in the deep layer of the magnetic layer of a magnetic tape, and records video information using another magnetic head on the surface layer, is equipped with two sets of first and second video heads and one set of audio heads, and in the first recording mode, the audio head records audio signals made into FM modulated waves or PCM modulated waves. On the recorded recording pattern, one of the video heads records a frequency multiplexed signal of a video luminance signal converted into an FM modulated wave and a low frequency converted chromaticity signal, and in the second recording mode, , the first video head records a video luminance signal or a color difference signal made into an FM modulated wave on the recording pattern in which the audio head recorded an audio signal made into an FM modulated wave or a PCM modulated wave; A magnetic recording and reproducing apparatus characterized in that a second video head is provided with means for recording a video color difference signal or a luminance signal made into an FM modulated wave at an adjacent position. 2. In the magnetic recording and reproducing apparatus according to claim 1, the audio head records the first recording pattern on the recording pattern in which the audio signal is recorded as an FM modulated wave or a PCM modulated wave in the second recording mode. The signal recorded by the video head is
A magnetic recording and reproducing device characterized in that the video color difference signal is an FM modulated wave.