FR2612720A1 - APPARATUS FOR RECORDING AND, OR PROPERTY, REPRODUCING A VIDEO SIGNAL - Google Patents

Abstract

THE INVENTION CONCERNS AN APPARATUS OF THE SECAM MAGNETOSCOPE TYPE IN WHICH TWO CHROMINANCE COMPONENTS ALTERNATIVELY EMITTED AT EACH HORIZONTAL PERIOD ARE DELAYED BY A HORIZONTAL PERIOD EVERY TWO DOUBLE FRAMES AND RECORDED EVERY SEVEN FRAMES ON THREE FRAMES IN ANY WAY. ONE ON TWO TRACKS. IN REPRODUCTION, TWO OTHER TWO DOUBLE-SCREEN CHROMINANCE COMPONENTS, WHICH WERE NOT DELAYED AT RECORDING, ARE DELAYED HORIZONTALLY. THE APPARATUS INCLUDES A MEAN 50, 51 TRACK PURSUIT SIGNAL GENERATOR, A DELAY COMMAND MEANS 60 ACTIVATED IN SYNCHRONISM WITH THE TRACK PURSUIT SIGNAL GENERATOR, A RECORDING MEANS, A MEANS 23 SERVING TO DELAY FROM A HORIZONTAL PERIOD THE SAID TWO COMPONENTS EVERY TWO DOUBLE FRAMES SELECTED BY THE DELAY CONTROL MEANS, AND A MEAN 60 SERVING, DURING THE REPRODUCTION, TO SELECT THE OTHER COMPONENTS ALL THE TWO DOUBLE FRAMES WHICH WERE NOT SELECTED WHEN RECORDING AND DELAYING THESE BY A HORIZONTAL PERIOD.

Description

The present invention relates generally to an apparatus

  recording and / or reproducing a video signal and, more particularly, a video recorder designed to be

  used according to the SECAM process (sequential with memory).

  According to the SECAM process, two chrominance subcarrier signals having different FOR and FOB frequencies are frequency modulated respectively by two difference signals

  red R-Y and blue B-Y. Then the difference signals

  frequency modulated color (FM), namely (R-Y) FM and

  (B-Y) FM, are alternately multiplexed with a light signal

  nance Y at each horizontal scan period, then are output. The SECAM process is used in France, the USSR, the German Democratic Republic, and in other countries, and it presents a scanning system in which 25 complete images are emitted every second, a complete image being formed of 625 lines. By

  therefore, between the odd numbered and numbered images

  Even pair, the FM color difference signals (which will be referred to hereinafter simply as color difference signals) relating to the same line replace each other. As for example represented by the hatched parts of FIGS. 1A and 1B, the red color difference signal R-Y is emitted on the odd line during the odd image and emitted on the even line during

the even picture.

  In a helical scanning VCR with two rotating magnetic heads, the video signal corresponding to a frame is recorded on each of two adjacent tracks of a

  magnetic tape. In addition, in a heli scan VCR

  coidal with two rotating heads which employs a magnetic strip

  8 mm wide tick (hereinafter simply referred to as an 8 mm VCR), the tape format for a video signal using the 25 full frame and 625 line system is determined so that the gap between the ends of start of two adjacent tracks corresponds to a horizontal scanning period (1H) in the long duration mode (LP) and to two scanning periods

  horizontal (2H) in standard duration mode (SP).

  However, in the color video signal according to the SECAM method, the color difference signals relating to the same line exchange their mutual positions between the odd and even images. Thus, when the color video signal according to the SECAM process is recorded directly by the 8 mm video recorder, as shown in FIGS. 2A and 2B, in the two modes SP and LP, the color difference signals are not arranged in the direction perpendicular to the track between the odd fields and the even fields of two adjacent complete images. Thus, when the magnetic tape is reproduced with a variable tape speed, if the geometrical place of tracking of the rotary head passes over several tracks having the same azimuth, The relationship of line sequence between the color difference signals s '' interrupts so that the color cannot

not be demodulated properly.

  As a technique making it possible to solve these problems, the applicant has previously proposed an apparatus for recording and, or else, for reproducing a color video signal, the technical content of which is described in the Japanese patent application.

  n 52-139622 (published under n 60-33033).

  According to this previously proposed apparatus, the color difference signal is delayed by (2n-1) horizontal periods for every second image to be aligned aligned and, in addition, an image identification signal is recorded every four frames during the vertical blanking period. During reproduction, the image identification signal is detected and the color difference signal of every other image, which is not

  not delayed, is delayed by (2n-1) horizontal periods.

  If the color difference signal of the single even numbered image of the SECAM color signal is delayed by 1H, as shown in Figures 1C and 1D, and is recorded by the VCR to 8mm according to the conventional technique above indicated , the color difference signals are found, in

  the two modes SP and LP, be aligned in the vertical direction

  wedge with respect to the track between the odd fields and the even fields of two adjacent images, so that the alignment of the

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  colors in line sequence is performed as shown

felt in Figures 2C and 2D.

  In this case, if, at the time of reproduction, as shown in FIGS. 1E and 1F, only the color difference signal of the odd numbered image is delayed by 1H, it is then possible to maintain the regularity of the sequence of lines for the reproduced color signal as well as the identity between the lines

odd and even images.

  In the conventional technique presented above, as an image identification signal, a burst signal is inserted, having for example a frequency of 88 fH (approximately 1.39 MHz) in the vertical blanking period. However, the circuit for producing the 88 fH burst signal and the circuit for detecting the image identification burst signal to produce a delay control repositioning pulse

  during reproduction both have a complex structure.

  In addition, in the case of the 8 mm video recorder, the chrominance signal with low frequency band carrier has a frequency range of 743 + 500 kHz and the FM audio signal has a frequency range of 1.5 + 0, 1 MHz. To prevent the first signal from disturbing the second, it is not possible to use the image identification signal having the frequency 88 fH 'In addition, if the identification signal is not used image, there may be a case where the color signal of the even numbered image delayed by 1H when recording is again delayed by 1H during reproduction, as shown in Figures 1G and 1H . In this case, in the television receiver, the color difference signals with line sequence RY and BY are produced at the same time and are then sent to the picture tube as the color signal, so that, for example, a image corresponding to a color signal of the (2n + 1) th line of the odd numbered image and an image corresponding to a color signal of the (2n-1) th line of the even numbered image are reproduced alternately on the same position of the television screen. In the same way, an image corresponding to the color signal of the 2 (n + 1) th line of the odd numbered image and an image corresponding to the color signal of a second line of the even numbered image are alternately reproduced on the same position of the television screen. Thus, the reproduced color image vibrates with an amplitude of two scanning lines at the full image frequency in the vertical direction, so that the reproduced image becomes

  difficult for the viewer to see.

  According to one aspect of the invention, there is provided a video signal recording and / or reproducing apparatus in which two components, forming a pair, of the chrominance subcarrier signal alternately transmitted in each horizontal period are delayed by a horizontal period at the rate of a double frame out of two and are recorded on the inclined tracks of a magnetic strip at each frame so that

  the two components, forming said pair, of the sub-signal

  chrominance carrier are on at least one in two of said inclined tracks and, when reproducing, two other components, forming a pair, of the chrominance subcarrier signal belonging to a double frame out of two, which are not delayed during recording, are delayed by a horizontal period, comprising a signal generating means

  track tracking control used sequentially and cyclically

  cement producing control signals having four frequencies every four frames, a delay control means actuated in synchronism with said signal generator means

  piloting, a means serving to record said pilot signals

  a stage having four frequencies sequentially and cyclically on said inclined tracks every four frames, a means

  for delaying said pair of components of the sub signal

  chrominance carrier of a horizontal period every two frames selected by said delay control means, and means for reproducing, selecting a pair of components of the chrominance subcarrier signal every two double frames , which were not selected during recording, by said delay control means based on the reproduced control signals and to delay these by one

horizontal period.

  A preferred embodiment of the above invention

  described provides an apparatus for recording and reproducing

  output a video signal, by which, when reproducing with variable tape speed, a color signal is properly demodulated and a reproduced image can be prevented from vibrating in

the vertical direction.

  A video signal recording and / or reproducing apparatus constituting an embodiment of the invention

  is intended for use with a SECAM type VCR.

  The following description, intended as an illustration of

  the invention aims to give a better understanding of its characteristics and advantages; it is based on the appended drawings, among which:

  - Figures 1A to 1H and Figures 2A to 2D are respectively

  simplified diagrams to explain the invention

  tion; - Figure 3 is a block diagram showing a mode of realization of a recording and, or alternatively, video signal reproduction device according to the invention; - Figure 4 is a block diagram showing a main part of the embodiment of the invention; FIGS. 5T and 5A to 5G are respectively time diagrams making it possible to explain the operation of the main part of the embodiment of the invention; - Figures 6A and 6B are respectively diagrams illustrating configurations of tracks of the embodiment of the invention; and FIGS. 7A to 7D are respectively time diagrams making it possible to explain the operation of the mode of

realization of the invention.

  We will now describe generally, in relation to FIGS. 3 to 7D, an embodiment of the recording and, or alternatively, video signal reproduction apparatus according to the invention.

  We first refer to Figure 3. A mode of realization

  sation of the video signal recording and / or reproducing apparatus according to the invention generally comprises a recording system and a reproduction system which are respectively designated by the reference numbers 10 and 30. Two magnetic heads 1A and lB are intended to record and, or else, reproduce a video signal. The magnetic heads 1A and 1B are mounted on a rotary drum (not shown) and have an angular spacing of 180 between them. There is also a third magnetic head lAp which is exclusively used to reproduce a video signal. This magnetic head lAp is mounted on the rotary drum so as to have an angular spacing corresponding to 2.5 H (H being a horizontal period) relative to the magnetic head lB in the direction followed by the latter during the rotation of the rotating drum, as indicated by arrow A. The magnetic heads 1A, lAp and lB are all rotated by a drive motor 2. The magnetic heads 1A, lAp and lB are all connected to a switching circuit 3. The switching circuit 3 responds to a switching pulse PSw by appropriately selecting one of the magnetic heads 1A, lAp and lB according to the recording mode and the reproduction mode. The switching pulse PSw is supplied by a system control device (or a microcomputer) on the basis of the output signal PG detected from a detection means 4 used to detect the phases of rotation of the heads

magnetic 1A, lAp and lB.

  A SECAM color video signal is applied via an input terminal IN of the recording system 10 to a

  low-pass filter 11 from which a light signal is produced

  nance Y. The luminance signal Y is delivered via a pre-emphasis circuit 12 and a limiter 13 to a frequency modulator 14. A luminance signal modulated in frequency YFM is delivered by the frequency modulator 14 to a recording amplifier 17 via a high-pass filter 15 and an adder 16. The output signal from the recording amplifier 17 is supplied to the

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  switching circuit 3 via fixed contact 5r located on the side

  recording and mobile contact 5c of a switch 5.

  In addition, the color video signal applied to the input terminal IN is separated into a chrominance signal C by a bandpass filter 21. This chrominance signal C is supplied via a bell filter 22 to a delay line 1H 23 and at the fixed contact 24s of a switch 24. The switch 24 receives on its other fixed contact 24d the output signal of the delay line 1H 23, and it delivers the output signal produced on its movable contact 24c to a frequency conversion circuit 25. An oscillator 26 in

  form of automatic frequency control circuit (CAF) -

  automatic phase control (CAP) is intended to supply its output signal to the frequency conversion circuit 25. A converted chrominance signal Cl originating therefrom is delivered to

the adder 16.

  The adder 16 receives a piloting signal PL, via the

  movable contact 6c and fixed contact 6r, located on the recording side

  trement, a switch 6, from a generator circuit 51

  of piloting signals which will be described more fully below.

  In the reproduction system 30, an amplifier 31 receives a signal reproduced via the movable contact 5c and the fixed contact 5p, located on the reproduction side, of the switch 5. The signal of

  frequency modulated luminance YFM coming from the amplifier output

  Ficitor 31 is filtered by a high-pass filter 32, then is sent to a frequency demodulator 34 via a limiter 33. The output signal of the frequency demodulator 34 is supplied to an attenuation circuit 35, in which it is attenuated in order to produce the luminance signal Y. This luminance signal Y is supplied to an adder 36 and the output signal from the adder 36 is

supplied to an OUT output terminal.

  The converted chrominance signal C1 obtained from the output of the reproduction amplifier 31 and filtered by a bandpass filter 41 is supplied to a frequency conversion circuit 42. The frequency conversion circuit 42 receives the output signal from the oscillator 26. A chrominance signal C coming from the frequency conversion circuit 42 is delivered jointly to a

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  1H delay line 43 and the fixed contact 44s of a switch 44. The output signal of the 1H delay line 43 is delivered to the fixed contact 44d of the switch 44. The switch 44 delivers the output signal produced on its movable contact 44c to adder 46 via

a bell filter 45.

  The control signal generator circuit 51 responds to a two-bit selection control signal SL coming from a system control device 50 by cyclically producing control signals from four automatic tracking frequencies (ATF). On respective tracks of a magnetic strip T, the frequency modulated luminance signal YFM ′ is recorded, the converted chrominance signal Cl and the control signals PL in the form of signals multiplexed in frequency. The frequencies of the control signals assigned to the respective tracks are determined as follows: fl = 6.5 fH = 103 kHz f2 = 7.5 fH = 119 kHz f3 = 10.5 fH = 165 kHz f4 = 9.5 fH = 149 kHz A reproduced control signal PLpb is separated from the output signal of the reproduction amplifier 31 by a filter

  low pass 52, then is delivered to a multiplier 53. The multipli-

  cator 53 receives a reference pilot signal PLref, iden-

  tick to that of the track being reproduced, coming from the control signal generator circuit 51 via the fixed contact on the reproduction side 6p and the movable contact 6c of the switch 6. The output signal from the multiplier 53 becomes a crosstalk component, previous and next tracks to the track being played. A tracking error detection circuit 54 receives the output signal from the multiplier 53 and compares the amplitudes of the crosstalk components of the adjacent tracks in order to detect a tracking error. The signal from

  detected output from circuit 54 for error detection

  runway continuation undergoes a polarity reversal every two tracks, then is sent to a track following servo circuit 55. The output signal of the track following servo circuit 55 is supplied to a drive motor capstan (not shown), so that The servo control

  Tracking is performed in ATF mode.

  A delay control circuit 60 is provided in order to align the colors. This delay control circuit 60 receives

  the switching pulse PSw and the selection command signal

  tion SL from the system control device 50. The

  delay control circuit 60 output signal is direct

  delivered to the switch 24 of the recording system 10, and

  it is also supplied to switch 44 of the reproduction system.

  duction 30 via an inverter 46. In the recording system 10 and the reproduction system 30, the delay lines 1H 23 and 43, the switches 24 and 44, etc., are respectively provided.

  so as to allow an easy understanding of the passage of signals.

  In practice, as shown in Figure 4, a delay line

  single switch, single switch, etc. are appropriately provided

  required jointly for the recording system 10 and the system

reproduction 30.

  Figure 4 shows the circuit of a main part of

this embodiment.

  As shown in FIG. 4, the switching pulse PSw is delivered via an exclusive OR circuit 63 to the clock terminal CK of a flip-flop 61 and to a first input terminal of an AND circuit 62 of the delay command 60. The AND circuit 62 receives on its second and third input terminals The data SL1 of the most significant bits (MSB) and the data SL2 of the least significant bits (LSB) of the selection control signal SL via a second and a third exclusive OR circuit 64 and 65. The signal

  from the ET 62 circuit is delivered to the repositioning terminal

  operation R of flip-flop 61. The first, second and third exclusive OR circuits 63 to 65 receive on their other input terminal a common long-term mode control signal LP. The input terminal D and the inversion output terminal Q of the flip-flop 61 are connected together and the output signal produced on the non-inversion output terminal Q of the flip-flop 61 is supplied to a terminal of input of a fourth exclusive OR circuit 66. The exclusive OR circuit 66 receives on its other input terminal a

  PB signal for control of the reproduction mode.

  The chrominance signal C of the SECAM process is applied from an input terminal 71 to a 1H delay line 73 and to a fixed contact 74s of a switch 74. The output signal of the

  1H 73 delay line is delivered to a fixed contact 74d of the commu-

  74, and the output signal produced on the movable contact 74c

  of the switch 74 is delivered to an output terminal 72.

  The delay line 1H 73 and the switch 74 correspond-

  lie respectively on delay lines 1H 23 and 43 and switches 24 and 44 in Figure 3, and they are used in

  common in the recording system 10 and the reproduction system

duction 30.

  We will now describe the recording operation and the normal reproduction operation of this embodiment, in relation to FIGS. 3 and 4, as well as with FIGS. 5T and

A at 5H.

  When recording in the SP mode, the system control device delivers selection control signals SL1 (Q) and SL2 (), which are represented in FIGS. 5A and 5B, to the circuit 51 driving signal generator as a control signal to control circuit 51

  steering signal generator to produce pilo signals

  tage fl to f4 having four frequencies, which are then sequentially and cyclically recorded on tracks TK1 to

  TK4 of the magnetic strip, as shown in Figure 5T.

  The switching pulse PSW (Q) shown in FIG. 5C and the selection control signals SL1 (Q) and SL2 (<') synchronized with this first pulse are supplied to the AND circuit 62 of the delay control circuit 60. The AND circuit 62 produces and delivers an output signal Q, shown in FIG. 5D, to the repositioning terminal R of the flip-flop 61 as a repositioning signal in order to reposition the flip-flop 61 at the instant tO, as shown in Figure 5E. The switch 74 responds to a low level output signal from the flip-flop 61 by connecting its movable contact 74c with the fixed contact 74s, thus allowing the chrominance signal C present on the input terminal 71 to be immediately delivered to the terminal of

exit 72.

  At the instant tl, which follows the instant tO after a time 1V (V represents the vertical period), the output signal O of the AND gate 62 falls to the low level, as shown in FIG. D. In addition, at the instant t2 succeeding the instant tl after a duration 1V, the switching pulse PSw (D) rises, as shown in FIG. 5C. Then, as shown in FIG. 5E, the flip-flop 61 responds to the anterior flank of the switching pulse PSw by reversing its state, which allows the delivery to switch 74 of its high level output signal. Therefore the

  switch 74 connects its mobile contact 74c according to the state shown

  sensed so as to allow the delivery of the chrominance signal i5 C present on terminal 71 to terminal 72 via the delay line 1H 73. The high level output signal of flip-flop 61 maintains its high level state until the next instant t4,

  at which the switching pulse PW () rises, as shown

  Sw felt in Figure 5E. After that, every four 4V periods, the above operation is repeated so as to delay the signal

  chrominance C of 1H for each complete image with even numbering.

  The chrominance signal C thus delayed is recorded

  on the third and fourth tracks indicated by "d", that is

  say the tracks Tk3d, Tk4d, where the color difference signals of the odd and even fields of the respective complete images are aligned. In the normal reproduction operation according to the SP mode, the track following servo circuit 55 controls the scrolling of the magnetic strip T in a controlled manner. Thus, when a correct tracking state is achieved, as mentioned previously, the control signal generator circuit 51 produces a reference control signal PLref having a frequency equal to that of the control signal PLpb during reproduction. Therefore, in the correct state of pursuit of

  track, the SL selection control signal issued by the dispo-

  sitive 50 of the system control has, for the tracks Tkl to Tk4 of the magnetic strip T, a phase relationship which is identical to

  the one existing during recording mode.

  The above-mentioned selection control signal SL is also supplied to the delay control circuit 60 so that the output signal Q coming from the flip-flop 61 is modified with a timing shown in FIG. 5E which is identical to that of the recording mode. In the reproduction mode, since the reproduction mode signal PB applied to the exclusive OR circuit 66 takes a high level, the output signal O of the flip-flop 61 sees its phase being reversed by the exclusive OR circuit 66 and is then

issued to switch 74.

  Thus, in a manner opposite to that relating to the recording mode, the chrominance signal reproduced is delayed by 1 hour for each complete image with odd numbering. In addition, the chrominance signal of each even numbered full image that is delayed by 1H during recording mode is reproduced without being delayed. In this way, as shown in FIGS. 1E and 1F, it is avoided that the timing of the chrominance signals on the respective lines is shifted between the complete images with odd numbering and even numbering. So we can

  prevent the reproduced image from vibrating in the vertical direction.

  In LP mode, the LP mode control signal goes high and the switching pulse PSW () and the selection control signals SL1 (Q) and SL2 (D) have their phases respectively reversed by the circuits Exclusive OR 63 to 65. As a result, as shown in FIG. 5F, the output signal Q of the AND circuit 62 in the LP mode amounts to

  the instant t3 and the output signal Q of the ET 62 circuit resti-

  operates the flip-flop 61, so that the output signal Q of flip-flop 61 in the LP mode maintains its state of high level for the duration going from the instant tl, at which the switching pulse Q falls at the low level, until 'at the instant t3, while it remains in its low level during the duration going from the instant tO to the instant tl and during the duration going from the instant

t3 at time t4.

  Thus, when recording in LP mode, the chrominance signals C of the even frame of the odd complete image and of the odd frame of the next even image are delayed by 1H. The chrominance signals C thus delayed are

  recorded on the second and third tracks Tk2 and Tk3 affected

  tees of the letter "d" in FIG. 6B, so that the color difference signals of the odd fields are aligned and

  even frames of the respective complete images.

  For normal reproduction in LP mode, in the same way as for SP mode, the output signal from flip-flop 61 is inverted by the exclusive circuit 66, which allows switch 74 to connect its movable contact 74c in a state opposite to that of the recording mode for each frame. Thus, in a manner opposite to that of the recording mode, the chrominance signals C reproduced from the even frame of the even full image and the odd frame of the next full image are delayed by 1H. These delayed C chrominance signals are identical, with respect to the timing of each line, to the C chrominance signals which have been reproduced without being delayed in the remaining frames, so that the reproduced image can be prevented from vibrating

in the vertical direction.

  We will then describe the actual reproduction operation

  killed at a speed twice the normal speed according to this embodiment of the invention, in relation to FIGS. 6A and 6B

and Figures 7A to 7D.

  In the SP mode, as shown in FIG. 6A, the geometrical locus La of tracking of the tracks by the magnetic head 1A intersects the track Tkl and the geometrical locus Lp of tracking of the tracks by the magnetic reproduction head lAp intersects the track Tk3d, the geometrical place of tracking Lp being in advance, of 2.5 H, compared to the geometrical place Lb followed by the magnetic head 1B. The magnetic heads 1A and 1B reproduce the recorded signals of zones resulting from the projection of the respective geometric places La and Lb on the corresponding tracks Tkl and Tk3d. Then, as shown in FIGS. 7A and 7B, at the level of the anterior flank of the switching pulse PSW '

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  the color signals reproduced by the two magnetic heads 1A

  and lB can be sustained continuously.

  In the LP mode, as shown in FIG. 6B, the geometric location Lp of tracking by the magnetic head lAp intersects The track Tkl, then the geometric location La of the magnetic head 1A intersects the track Tk3d. The magnetic heads lAp and 1A reproduce the zone signals resulting from the projection of the respective geometric places Lp and La on the corresponding tracks Tkl and Tk3d, so that, as shown in FIGS. 7C

  and 7D, the color signals reproduced by the two magnetic heads

  ticks 1Ap and 1A can be maintained continuously at the level of the posterior flank of the switching pulse PSw 'Thus, the magnetic heads and the delay lines 1H of the reproduction mode with speed twice the normal speed of scrolling can be exchanged in the same way as for the normal mode of reproduction, so that it is possible to simplify the

structure of the desired logic circuit.

  According to the invention, as explained above in detail, since the control signals at four ATF frequencies are used as the identification signal of a double frame in order to control the application of the delay operation used to align the color signals, it is possible to produce a video recorder of the SECAM type having a simplified structure by which two components, forming a pair, of the color signal transmitted according to a process with sequence of lines which are delayed and not delayed every two frames during of the recording are correctly associated with two other components, forming a pair, of the color signal which are not delayed and delayed during the reproduction so that the reproduced image

  is prevented from vibrating in the vertical direction.

  Of course, those skilled in the art will be able to imagine,

  from the device whose description has just been given to

  title merely illustrative and not limiting, various

  variants and modifications not departing from the scope of the invention.

Claims (5)

  1. A video signal recording and / or reproducing apparatus in which two components, forming a pair, of the chrominance subcarrier signal alternately transmitted in each horizontal period are delayed by a horizontal period every two double frames and recorded on an inclined track with a magnetic tape to all the frames so that   the two components, forming said pair, of the sub-signal   chrominance carrier are arranged on at least one out of two of said inclined tracks and, when reproducing, two other components, forming a pair, of the chrominance subcarrier signal belonging to a double frame out of two, which are not delayed during recording, are delayed by a horizontal period, characterized by means (50, 51) of tracking signal generator serving to produce a tracking signal in order to control the tracking of said device during reproduction, delay control means (60, 62 to 65) operated in synchronism with said tracking signal generating means, means for recording said tracking signal with said video signal, means (23 , 73) serving to delay the two components, forming said pair, of the chrominance subcarrier signal by a horizontal period every two double frames selected by said re control means late, and means (74) for, at the time of reproduction, for selecting the other components of the chrominance subcarrier signal every two double frames, which were not selected during recording, by said delay control means based on the track following signals reproduced and delaying them by a horizontal period. 2. Apparatus according to claim 1, characterized in that said tracking signal has four frequencies which change sequentially and cyclically at each of the four tracks.   3. Apparatus according to claim 1, characterized in that   said video signal is The SECAM signal.   4. Apparatus according to claim 3, characterized in that   the two components, forming said pair, of the sub-signal   chrominance carrier are the color difference signals R-Y red and B-Y blue.   5. Apparatus according to claim 1, characterized in that   that it has different tape speeds for recording very much.