JPS5952983A - Recording and reproducing system of color video signal - Google Patents

Abstract

PURPOSE:To enable high density recording by making two subcarriers that synchronize relative movement between a video head and a magnetic medium and intersect at right angles a color tone when magnetically recording a carrier luminance signal at different azimuth between adjacent tracks. CONSTITUTION:Three kinds of carriers (1)-Asineomegact, (2) Acosomegact, (3) Asinomegact are made from output of an oscillator 1 by a phase shifter 2. One chrominance signal ER-V (t) and the signal (1) are inputted to make a balanced modulation wave and the signal (2) is added to this modulation wave to make a carrier chrominance signal CR (t). This signal is inputted to an inversion circuit 4 to make + or -CR (t) controlling phase inversion by rectangular wave of 1/2 fH. Another chrominance signal EB-Y and the signal 2 are inputted to another balanced modulator 5 and the signal 3 is added to this balanced modulation wave to make another carrier chrominance signal CB (t). After multiplexing + or -CR (t) and CB (t), a signal 21 made by composing the carrier luminance signal CY (t) and a reference signal fP is recorded by using inclined azimuth so that horizontal synchronizing signals are made uniform and phases of signals 2, 3 are made uniform between adjacent tracks.

Description

[Detailed description of the invention]

The present invention relates to a 6-color recording and 11-raw system for color video signals, and particularly improves the recording and reproduction of color m numbers. When recording video signals in one magnetic unit, two methods are available to improve the recording density: a frequency modulation recording method using tilted azimuth (CPM method) and a frequency modulation recording method using tilted azimuth (CF VI method). Toga Shihachi is here. Phase summer i: In the IJ recording system, the method is disclosed in Japanese Patent Publication No. 56-51406);
Like I'm doing. (1) Synchronize with the movement of the A1 pair between the main carrier, the magnetic medium, and the video head modulated by the luminance signal. (2) This king gear is modulated so that the modulation index mp is 1.3 radians or less. +31 This modulated luminance signal, that is, the carrier luminance Gi, is applied to the vertical IU and horizontal synchronizing signals. Recording is performed so that the positions of the carriers are aligned between adjacent trunks and the phase of the main carrier is also aligned between adjacent tracks.When performing phase modulation recording in this way, the carrier recorded on each track is Since the amplitude of the component is approximately constant and the carrier component is in phase between trunks, the carrier component of the +4j biosignal remains constant even if the video node straddles adjacent trunks. (lmp≦1. 3, so the quadratic (ti
Since the ll band wave components are clearly visible and the synchronization signals are aligned between tracks, even if the video head straddles adjacent trunks, the side band wave components of the playback signal are a composite of multiple frames, but have an extremely strong correlation. It is only a combination of i-planes. Therefore. When recording, the card band is removed or the bar 1sX is used.
1j Record with high density so that it is written on the other hand. Even if there is a trunking error during playback, the Kisho signal can be printed v4 without any problem of crosstalk. On the other hand, in the FM system using one tilting azimuth, as is well known, the azimuth effect is fully utilized to record a single frequency modulated luminance signal, that is, a carrier luminance signal, at the same azimuth on adjacent trunks. Therefore. Even if the video head straddles adjacent tracks during playback, no signals will be received from tracks with different azimuths, except for low frequency components. Therefore, like the phase modulation recording method, even if tracking errors occur during high-density recording and reproduction, there is no problem of crosstalk. Note that both the 1-phase modulation recording method and the FM method using tilted azimuth use angle modulation. This AM noise can be removed from the brightness signal. As mentioned above, the preferred recording method has been used for the luminance signal in the color video signal, but for one color information signal, f! /! l is the color difference signal (it-Y,),
! l: CB-Y)ノ 2 Lm g cy) color n
In order to prevent the spread of the spectrum, the two color signals recorded by amplitude modulation (AM) are alternately per horizontal line, that is, line-sequential, and frequency modulated (F 'M
). Therefore, in the amplitude modulation recording method of color signals, the image quality is deteriorated due to AM noise. In addition, the line sequential recording method has the problem that some color information is missing, resulting in a loss of quality. The present invention is based on the prior art of color signal recording described above, and allows two types of color signals to be recorded without deteriorating image quality despite having a narrow occupied band.
- It provides an all-in-one recording and playback system for color video signals that can be recorded and played back, and can be easily modulated and demodulated. 1j1'' In this Komei, two color signals of (1 also -Y) and (B-Y) (ikY or two primary color signals) are multiplexed by quadrature two-phase phase change ii1..I. As a recording of the color signal of the color image A3, V, synchronized with the relative movement between the two media such as a video bed,
The first and second subcarriers having frequencies whose phases are aligned with the adjacent track l;] are modulated in 61 phases with one side of each of the two color signals, and 7'L, etc. 2
At least one of the two even color signals and the first and second sub-carriers to be phase modulated is used. one to one
18 relative to 1 horizontal scan 7σ without phase shift for each horizontal scan
Two carrier colors No. 43 whose phase is shifted by 0 degrees are used, and two (general carrier color signals gold) whose phase is shifted by 180 degrees relative to each other are multiplexed and this multiplexed color signal gold is multiplexed. Carrier color No. 45 is recorded in Fi12 so that at least the recording position of the horizontal synchronization signal is aligned between the carrier trunks and the phases of the first and second subcarriers are aligned between adjacent tracks.
As a raw person. The multiplexed carrier color signal is delayed by one horizontal scanning time, and separated into two carrier color signals by processing and subtraction processing of the signals before and after the delay, and each separated carrier color signal is processed. The original two colors No. 13 are obtained by demodulating with a phase reference signal that is equal to the phase shift at the time of recording. '' Due to the recording method of double color No. 114, the occupied band does not widen, and it is not affected by AM No. 1s. This has the effect that there is no crosstalk problem. Ushita. The above-mentioned quadrature two-phase phase modulation of the color signal and its demodulation can be realized with a simple circuit configuration by using a balanced modulator sound.
! , the reproduced color signal will also be good. One of the objects of the present invention is to achieve high-density recording not only of color signals but also of the entire color video signal and at the same time to obtain good reproduced images. In addition to adopting the phase modulation recording method as described above for the color signal e +
1) Frequency modulation recording method using 1N diagonal azimuth will be adopted in all cases. First, we will explain the principle of phase modulation using a balanced modulator.
l and L7. The constant term is removed from the single phase modulated signal C,t
tl is. cttl-ACO8(Wct +kf(tlJ
...Equation (1) is obtained. 1 hour in the afternoon here
″71′ k f(tJ< 1 (k is a constant).C(tl″A cosLL)ct −Akf(tJ
5inlAt +++
Formula (2) is obtained. The first term in equation (2) is the carrier % second
The top t represents the equilibrium modulation, kf(tJ < 1
In the range of e, the phase shift Mj is quadratic or higher -(I(II'
: It can be seen that the f7 wave can be ignored and can be modulated by a balanced modulator. Here, consider all the conditions for establishing kf(tl < 1. fitl = a 5in(J'+nt
-・If we take equation (3) and substitute it into equation (2), we get the following. C(t no A (coscuat +v + co
s(LL]C→υ'+n)t-cos(-c-L5)m)tl)...Equation (41).However, mp=kea represents the maximum variable 1174 index.On the other hand, expression +31 Substituting into the formula il+ and expanding it to 1- by the first glaze Betussel function, we get cos (u)c-ichi)t)''...
Formula (5) is obtained. Equation (4), (51 years of formation g, 111 input [ifl is considered to be a range that satisfies k f(ti(1).
Considering the value of 1'llp≦1.3...Equation (
7) The t''Lu equation piJ holds with a very good approximation. From the above, phase modulation based on the equilibrium change jj'l gW II is possible as long as it is below 1υ to the extent that the variable H'11\ index is obtained. The fact that phase modulation can be performed with a 9I modulator -1'4 modulator means that the modulator/demodulator has a simple circuit configuration and can perform extremely stable phase A1 modulation and demodulation, and as will be described later, it uses quadrature two-phase modulation. This makes it possible to multiplex phase modulation. Now, considering the upper limit of variable N, 1 index mp, 1 m
The upper limit of p is mostly determined visually. When recording luminance signals using phase modulation recording method. Preferably lnp≦1.0, practically mp≦1.3. However, since the chromatic signal has a narrower band than the luminance signal, it is thought that even if there is crosstalk, it will not be too unsightly.1 Even in the case of normal phase modulation, mp+1.5
It would be practical to some extent. On the other hand, when one-phase modification is performed using a balanced transformer, there is no secondary sideband wave in principle, so the m
It is considered that up to p is acceptable. If mp is large, S/
While N is improved, distortion occurs, but this distortion can be corrected. From the above, when recording five chrominance information signals using the phase modulation method, the tonal index mp can be set to be larger than that for luminance signals. In particular, in phase modulation recording of color signals when the balance level L1. When the two color difference signals (R-Y) and (B-Y) are used as modulation signals, and the phase is changed by As1nlct and Acoswct, which are orthogonal to each other, and a balance modulator, the quintic equation becomes (81, +91). However, ■7-Y]. 711 of (B-Y): Let the pressure be E, ny + En-y. Cn(t, 1=Aco!IWct-AkttEn-y(
tlsinuct = set (81Cn(t) = A
s i+iωct+A1<nFl;n-Y(tlco
s (z7ct = Equation (9) Tokoroka 1 Equation (8) 1 Equation + 91 [i-ItesonEr-Y+E n-y'
Fc (41L'M to CR (tlX 5intd
Ct, CB(tlXcostJ)Ct, respectively, should be synchronously detected. CttS CR(tl TCn(tl
If it turns out to be a complete set u01,
Even if synchronous detection is performed using all the phase reference signals of 5inIJ)cj and cos'U)at, the carrier component that becomes Δ is included in the synchronous detection output because carriers in phase with these are included in C(tl). In the present invention, in order to remove this DC component, Cn(t) and Cn(
CR (tl or Cn
One side of ft1 is configured to invert the phase in one horizontal scanning period, and one side is configured to have a phase of S: 90 every horizontal scanning period.
9 Cu (tl and Cn (IJ is 1 horizontal scanning period 1
Multiplexing is performed using TCI so that the phase is shifted by 180 degrees relative to one phase. For example, Cft1” ±CnttJ −4−Cn (tl−Sat(
Acostoct-AlcHER-y(tlsinωc
tJtenCAs1nωct+AknEn-y(tfuco+
1) ctJ - Expression (111) Since there is a strong vertical itI correlation between the city tone jJ, 1st grade VI, and the adjacent water vert scan line, C(tl is delayed by one horizontal scan time, VCm performs addition and subtraction processing on the Ikigo before and after the delay.
(KftL for tJ and CB (tl). After separation, it is sufficient to perform synchronous detection of the noise. However, in the case of formula OD, Cn (tJ is I?) et al. 71-ru, but Makoto 32, Therefore, the phase reference signal used for synchronous detection must also be phase-inverted every horizontal scan to be ±sinωct. For example, CnttJ is advanced by 90 phases per horizontal scan, and Cn (tJ is l horizontal 7 [scan 7 + j by 90 phases (a)).
- Sometimes it's delayed. A must as well! It becomes 81. These GZ phases! The angle r to be shifted to σ is determined according to the angle at φ, 6 o'clock, Cn(tl or CB(tl), and the phase is shifted. If the phase of each subcarrier is not aligned in each horizontal scan, the FM will be incomplete by the amount described above, so it is necessary to relate the subcarrier frequency 1-L)c/2π to the horizontal scanning frequency flI. [In the case of 4!lE U′ rotation digital, 1 trunk/1 frame is LLI C,
/2π=nefI (and cL in the rate rack/l field) c/2π" (sz +') fH. Taking the above as an example, the recording method of the present invention is
The color video recorded on the magnetic medium by changing the azimuth of the main carrier by rotating the main carrier at a frequency of 1 in 1b'4 is the 6C recording type V of the issue. l
, - ゛C, the video head (which corresponds to the relative movement between the air media and is orthogonal to each other) has a frequency that is aligned in the trunk music when the video head and the video head (711) The second subcarrier gold is phase-modulated with one of the two color signals, and the two color signals are phase-modulated with 7', that is, 2.
The two carrier color signals and at least one of the first and second subcarriers to be phase-modulated are phase-shifted every horizontal scan, so that the two carrier color signals and the first and second subcarriers to be subjected to phase modulation are relative to each other every horizontal scan. Assume that two carrier color signals are phase-shifted while indulging xso, and this one
The two transport color information signals (M) whose phase is shifted by 180 degrees relative to each other in each horizontal scan are combined, and this multiplexed color information signal (Q) and the transport angle A (11) are at least horizontally synchronized. The signal is recorded so that the recording position of the signal is between tracks that are momentarily connected and the phases of each of the first and second subcarriers are aligned in adjacent trunk songs. In the 1+) raw method, the first and second signals are synchronized with the relative movement between the video head and the magnetic medium and are orthogonal to each other, and have a frequency such that the phases of tL are aligned between the trunks of instantaneous contact. The phase of each of the two subcarriers is shifted υM, and these two phase-modulated color signals, i.e., the two carrier color signals, are combined with the two carrier colors (i and @1 to be phase-modulated and the At least one of the two subcarriers 'F3: Two carrier color signals whose phase is shifted by 180 degrees relative to each other, and each horizontal scan is shifted by 180 degrees. Two carrier color signal groups Mf are phase-shifted by 180 degrees relative to each other, and the multiplexed carrier color signal and carrier luminance signal IB are obtained by frequency modulating the main carrier with a luminance signal. Color data is obtained from a magnetic medium recorded in such a way that the azimuth is different between adjacent tracks, and at least the recording position of the horizontal synchronizing signal is aligned between adjacent trunks, and the phase of each of the first and second subcarriers is aligned between adjacent tracks. In a method for reproducing video signals, all of the carrier luminance signals and multiplexed carrier color signals are extracted from the playback output of the video head, and the carrier luminance signals are frequency demodulated, while the multiplexed carrier color signals are l The horizontal scanning time is delayed, and the signals before and after the delay are separated into two carrier color signals by addition and subtraction processing, and each separated carrier color signal is subjected to the same phase shift as that applied when recording a photo. It is characterized by demodulating with a phase reference signal whose phase is shifted to There are two methods: one is to shift the output of the quartet itself by a total of 180 degrees, ±901 phase, and the other is to shift the subcarrier's own f ray, ±90 V for each phase, but either one is fine. As a signal to the phase base 1'j, which is essential for synchronous detection, it is necessary to absorb time axis fluctuations due to fluctuations in the relative shift 1111 between the magnetic medium and the video head.One method for this is to use one color ( During the horizontal blanking period of the B signal, the signal component is negative, so the phase of the subcarrier is constant. Therefore, when 1 Synthesis) is used as a burst reference signal and APC (
A (automatic phase control) circuit is provided to generate seven consecutive phase reference signals corresponding to the fluctuations of the output 811, thereby making it possible to perform stable demodulation. 8

[,,+burst-like base iP (the phase of ij is PAL
Similar to the burst signal in the method, the signal differs by 90 degrees in 1σ during one horizontal scanning period. Due to this, 7. Not only does it have a Jh length that is resistant to time axis fluctuations, but a switching signal that inverts the phase base 14p signal ([1] for each horizontal scan can be obtained from the detection output of the APC circuit v6. (See Figure 4).As another method, it is also possible to record the base number on a magnetic medium and use the reproduced signal to divide the FRC phase reference signal. In case V, the above reference signal may be multiplex recorded on the video trunk or recorded on an auxiliary track. In addition to detecting rotational fluctuations of the drive motor etc. using an FC (frequency generator) and controlling the carrier oscillator, methods for synchronizing the relative movement of the carrier include recording a reference signal on a magnetic medium in the same way as creating a phase reference signal. There is a method of using the reproduction signal of the lever itself or the output of an oscillator controlled by the reproduction lever as a carrier.If the frequency of the subcarrier is high, it is more accurate to use a phase base small signal Kumquat.Please note that the magnetic medium The frequency of the reference signal recorded in the color video signal can be set to a band between the carrier luminance signal band and the carrier chrominance signal band, or a band p below the carrier chrominance signal band. recording and reproducing method (al
Since color signals are recorded by angular modulation in the same way as luminance signals, the influence of level fluctuations that occur during the recording and reproduction process, that is, A.
Does not receive M noise. (bl Since the phase of the subcarriers is aligned between adjacent tracks, there is no crosstalk visitor even in card bandless or high-density recording with partial overwriting. (cl) Since the modulation index mp is not very thick, the phase modulation Since the side band is originally narrow and the side band is multiplexed using quadrature two-phase modulation, the occupied band does not become wide even though all two types of colors KM @ f are recorded. (dl is the same (mp is not very large) From 1 phase inside the liquid and along both sides of the flat dispersion liquid, modulation by the device and synchronous detection r;
The old version, tl + work is extremely cheap 1. ．． z (Hi. tel) In addition, one side of the current color signal is inverted in phase every horizontal scan, and both are inverted by 90 degrees in opposite directions.
; (11 is multiplexed by multiplexing, and when it is a single picture, addition and subtraction processing are performed to separate it. Similar to the PAL system of color television, even if there is temporality of 17Kiiiil, it is 27L. 7 and shadow 4
, 1 lil and 5ifi. An embodiment of the present invention is shown in FIGS. 2 and 3. FIG. 2 is a block diagram of a recording system for one track/] frame. 11. The output of the generator 1 (e.g. 48 fa
From 756 kI(z) equivalent to t to phase shifter 2: 3,011! carrier As1nLL'ct, A cos
LL'ct. A s l n wc t is created, equilibrium degree 6 Oka stay 3
has one color A: 4 +fEn-y(tl and -A si
Input nωct to create a balanced modulated wave, and input Ac to n.
oslaJct is added to obtain the carrier color signal C+t(tl
6 is created once, and the phase inversion is controlled by a rectangular wave of input ↓fll input into the total inversion circuit 4 to create CRfLI. The other balanced modulator 5 receives the other color signals En-yttl and Acos.
'CJ)ct is input, and As1nωc is input to this balanced modulation wave.
t to create the other carrier color signal CB(t). ±
Cn (tJ and Cn (tl k) are multiplexed by a combining circuit 6. Then, this signal 21 is combined with the frequency-modulated carrier luminance signal CY (t) and the reference signal fp, using the full tilt azimuth method, and furthermore, at least The horizontal synchronization signal recording positions are aligned and A cosωct and As1nωct
Recording is performed so that the phases of adjacent tracks are aligned. The reference signal fp is obtained by dividing the frequency of the carrier As1nωct by 8 by the counter 7, and has a frequency of fH, that is, 94.5 KHz.
It's Toshide. Note that the carrier oscillator 1 is a voltage-controlled oscillator (1) that is designed to align the carrier phase between adjacent tracks by synchronizing the phase with a reference signal fp' obtained by reproducing an auxiliary track or an already recorded track on an auxiliary bed. It consists of a VCO) la, a counter 1b, and one phase comparator IC. The carrier luminance signal is not shown, but it is the same as the conventional frequency modulation method using tilted azimuth. Figure 3 shows a reproduction system corresponding to Figure 2, and reproduces No. 43 2.
Of the two, the music transmitting luminance signal C (tJ) is separated by the band pass filter 8 and manually inputted to the conventional FM demodulation circuit 9, but the multiplexed carrier color signal C (tJ is separated by the band pass filter 0). It is extracted and input to the delay line 11 for one horizontal scanning time.The input/output signal of the delay line 11 is given to the subtracter 12 and the adder 13 to create CR(t) and CB(t), and each is subjected to balanced modulation. 14 and 15.Each balanced modulator 1
The phase """A signal given to 4゜15 is ±s in
'-A) ct and cosLL'ct, and these are 4
8 fu oscillator 16. Phase shift circuit 17 and inversion circuit 18
It's made with In detail, 48 fH voltage controlled oscillator 1
The output of 6a is divided by 8 by a counter 6b, and the phase is compared with the reference signal tp/ extracted by a bandpass filter 6c by a phase comparator 16d to fully control the phase of the oscillation output. 5in(A'
Create phase reference signals for ct and eO8φct! ' b C0
8ψct is fed as it is to the flat dispersion liquid preparer 15, but si
nψCt is an inversion circuit 1 controlled by the square wave of ΣfH.
8 to obtain 10 sinωCt, which is then applied to the balanced modulator 14. When the output of each balanced modulator 14.15 is passed through a low-pass filter 19.20, the carrier and high-order components are removed and the color signals of ER-y(tl and En-y ftl) are output. Figure 4 shows an example of a reproducing system for use as a reference signal for all bursts of unmodulated synthetic subcarriers during the horizontal blanking period.The recording system is the same as that in Figure 2 and is omitted. The same parts as in Fig. 3 are given the same reference numerals to avoid redundant explanation.
4, all the pulses 23a with the width of the horizontal blanking period are input, and the reference signal gate circuit 25 receives this pulse 23affi.
It opens only while receiving the burst reference signal 25a and sends the burst reference signal 25a to the APC circuit 26. In the APC circuit 26, the phase detection circuit 28 compares the phase between the oscillation output 27a of the 1ivco (voltage controlled oscillator) 27 and the input reference signal 25a, and the output 28a detects the VCO.
27? By controlling the burst reference signal 25a
An oscillation output 27a having the same phase and frequency is obtained. This output] output 27a passes through a 90-degree phase shifter 29 and is sent to a phase reference 411 (c
os LL'ct ). On the other hand, Flimp Flossop 3
0 is horizontal synchronization (it number 24 is used as a clock, phase detection circuit #'628 of APC circuit 2 () is a burst-like base Y□'A
Signal 2 whose phase is detected at input chi σ of No. 17 25a
It is reset at 8b. The output of this flip-flop 30 turns off the switch 31 every horizontal scan, and the VC
Direct output 27a from O27 and 180 degree phase shifter (inverted “
The output 32a passing through the "" path) 32 is one horizontal scan (iX
is alternately applied to the balance 7 & adjuster 14, ±5inLL'
The phase ct is ν (becomes Hay No. 3).

[Brief explanation of the drawing]

Fig. 1 is a graph showing changes in the value of the Bessel function, Figs. 2 and 3 are block diagrams of the recorder system and the write system showing the first four implementations of the present invention, and Fig. 4 is the reproduction system. Another example (: is a block diagram shown. In the drawing, E', n-y it] and ETI-Y are color signals. - C41tl (!: Cn(tl tri 1.
'/a i;D color ia No. 1. Cy(tlij transport j;"l If (iT '+-
f mC (t, I is a multi-1jj gohi (complaint sensuality code. Asjnuct and A cosUCt H: carrier. xx-+, r number, 1 and 16 oscillate. 2 and 17 are phase shift circuits. 3.5.14 and 15 are balanced modulators. 4 and 18 are inverting circuits. 9 is the F'M repeating i11 circuit. 11 is a delay line for one horizontal travel time. 12 is an adder. 13 is a subtractor. 21 is a recording signal. 22 is the playback signal. 23 is a gate pulse circuit. 24 is horizontal synchronization No. 18. 25 is a reference signal gate circuit. 26 is the APC circuit. 30s: Flip-flop. 31 is a switch, '111 revised edition Hall 1, 'It('l) 1981 Special ff Application No. 162183 Showa
2013 Trial No. 2 Title of the invention Color video (Recording/reproducing method of No. m Relationship with % 1i'I'I % Applicant Fuji Photo Film Co., Ltd. 4, 210 Nakanuma, Minamiashigara City, Kanayo Prefecture (520) Agent) Personal Postal Lawsuit 107 Self-initiated 6, Clarification of the subject of amendment 1 - Column 7 of the "Detailed explanation of the invention" of the Director, Contents of the amendment written on page 18, line 12, "It is considered that..." and ``In addition,...'', ``In the latter case, there is no mutual interference between signals, so record the center frequency No. 16 itself as the phase reference signal when reproducing color (A).'' Insert the sentence ``This can simplify the equipment and simplify the equipment.''O -End-

Claims (1)

[Scope of Claims] 11+ A color video recording method V in which a carrier luminance signal obtained by frequency modulating a main carrier with a luminance signal is recorded on a magnetic medium with different azimuths between adjacent trunks. Relative displacement between head and magnetic medium! I! J.I.
The first and second trunks are synchronized with each other and have frequencies that are orthogonal to each other and whose respective phases are aligned between adjacent trunks.
The subcarrier of is phase modulated by one of the two color signals,
These two phase-modulated color signals, that is, the two carrier color signals, are in phase with the two carrier colors {M? A should be @m
l and the second sub-carrier for each horizontal scan so that the phase of at least one of l and the second subcarrier is shifted relative to each other by 18 0 per horizontal scan.
Assuming that there are two carrier color signals whose phase is shifted by Iff, the two carrier color I/H signals whose phase is shifted by 180 degrees relative to each other every horizontal scan are converted to multi+1[, The recording position of the horizontal synchronizing signal is aligned at least in adjacent tracks, and the phases of the first and second subcarriers are aligned between the tracks adjacent to liI!F. (2) A color video recording method that is characterized by the fact that it records frequencies that are synchronized with the relative movement between the video head and the magnetic medium, are orthogonal to each other, and whose phases are aligned between adjacent trunks. The il and second sub-carriers 'f' are subjected to hl phase modulation with one side of each of the two color equal signals, and these two phase modulated color signals, that is, the two carrier color signals are subjected to fJ phase modulation with the two carrier color signals. At least one of the first and second subcarriers to be processed is phase-shifted every horizontal scan to form two carrier color signals whose phase is relatively shifted by 180 degrees every horizontal scan, The two carrier color signals whose phase is shifted by 180 degrees relative to each other in each horizontal scan are multiplexed. The carrier luminance is obtained by frequency liquid W1'4 using the multiplexed carrier color signal and the main carrier total luminance signal. signal and gold, [the azimuth is different between the adjacent tracks υ, and at least the recording position of the horizontal synchronization bJ is jM between the adjacent tracks, and that of the first and second subcarriers between the two adjacent tracks. In a method in which all 11 color video signals are generated from an R1 medium recorded so that the phases are aligned, the above-mentioned carrier 'l:'f, U signals and multiplexed carrier color signals are output from the playback output of the video head. Extracted, 1!2 transmission luminance signal has frequency 1
On the other hand, the carrier color No. 43, which is converted into Taoki, is 1 horizontal 7r:, the blue time is delayed, and the signals before and after the delay are separated into two carrier color signals by caloric processing and subtraction processing, and are separated by 1 minute. A reproduction method for a color video image Q, characterized in that each carrier color signal is demodulated using an rη phase reference signal A3 whose phase is shifted to the same phase as the phase at the time of recording of each of the carrier color signals.