JPS61195097A - Color video signal recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce mutual interference among reproducing signals when tracking displacement occurs at each head by recording/reproducing an illuminance signal and a color difference signal on each rotary head, which is arranged in relation of prescribed position. CONSTITUTION:The illuminance signal of a terminal 26 is frequency-modulated 28 and fed to rotary heads Y1 and Y2. Color difference signals R-Y and B-Y of terminals 30 and 31 are respectively frequency-modulated at the FM modulators 34 and 35, fed to rotary heads C1 and C2 respectively, and recorded on each track separated in the tape width direction of a magnetic tape 15. when reproduced, the track is reciprocally scanned by one field each by means of the heads Y1 and Y2 and an FM illuminance signal of the track is reproduced and fed to an FM modulator 40. Similarly, the color difference signal reproduced by the heads C1 and C2 are separated through filters 43 and 44, and each signal is fed to respective modulators 45 and 46.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a color video signal recording and reproducing device, and more particularly to a color video signal recording and reproducing device in which a luminance signal and a chrominance signal are recorded on separate tracks using separate rotating heads, and then reproduced. The present invention relates to a signal recording and reproducing device.

2. Description of the Related Art At present, helical scan type magnetic recording and reproducing devices (VTRs) that use 1x2 inch wide magnetic tapes have a relatively narrow recording/reproducing band for home use, so they cannot separate luminance signals from color video signals. The luminance signal of the carrier color signal is frequency-modulated to become a frequency-modulated wave, and the carrier color signal is converted into a low-pass converted carrier color signal, which is then frequency-division multiplexed to the frequency-modulated luminance signal, and this frequency-division multiplexed signal is It uses a so-called low-frequency conversion color recording and playback method that records on magnetic tape and plays it back.Also, to improve tape usage efficiency, the azimuth angle of each rotating head used to record adjacent tracks is made to differ. A guard panless recording method is adopted. On the other hand, commercial VTRs intended for broadcasting, especially VTRs with built-in cameras, have the same tape width as home VTRs in order to make the device smaller and lighter and to improve the quality of reproduced color video signals. A method is used in which luminance signals and color signals are recorded on separate tracks using separate rotating heads on magnetic tape, and a guard band is provided between adjacent tracks to record and play back the signals. .

Figures 8 and 9 show the above-mentioned conventional camera-integrated VT.
Each of the track patterns recorded and formed in R is shown. In FIG. 8, tracks 2+ and 22 are inclined with respect to the longitudinal direction of the magnetic tape 1.

23 are tracks on which frequency modulated luminance signals (hereinafter referred to as FM!! i degree signals) are recorded, and track 3
+, 3z, and 33 are frequency-division multiplexed first and second frequency-modulated color difference signals (hereinafter referred to as FM color difference signals) obtained by separately frequency modulating separate carrier waves with color difference signals T and Q, respectively. This is a recorded track. track 2
1 and 3+ are tracks in which the FM luminance signal and FM color difference signal of the same field are recorded simultaneously and separately.
Similarly, tracks 22 and 32, and tracks 23 and 33 are tracks on which the FM luminance signal and FM color difference signal of the same field are recorded simultaneously and separately. Furthermore, track 2
The plurality of rotating heads for recording and forming tracks 1 to 23.3+ to 33 all have the same azimuth angle, and a guard band (no signal recording zone) is formed between adjacent tracks. In addition, in FIG. 8, 4I and 42 are the 1st. an audio track on which the second channel audio signal is recorded; 5 a control track formed by the control head;
6 is a time code track formed by a time code head.

On the other hand, on the magnetic tape 7 shown in FIG. 9, there are inclined tracks 8+, 82.9+, 92 and first . Audio tracks 10+ and 102 of the second channel, a time code track 11, and a control track 12 are recorded, respectively. Recording tracks 81 and 82 are tracks in which FM luminance signals are recorded by a rotating head with an azimuth angle of -15°, and recording tracks 91 and 92 are tracks in which FM time-base compressed color difference signals are recorded by a rotating head with an azimuth angle of +15°. It's a truck. Here, the FM time axis compressed color difference signal is the color difference signal (R-Y) and (B-Y).
After compressing the time axis to 1/2, they are time-division multiplexed alternately every H/2 (where H is the horizontal scanning period), and the carrier wave is frequency-modulated using this time-division multiplexed signal. be. After recording and forming tracks 81 and 91 simultaneously and separately using the two first rotary heads with an azimuth angle of -15° and the two second rotary heads with an azimuth angle of +15°, , in the next field, tracks 82 and 92 are simultaneously and separately recorded, and thereafter, two tracks are recorded in the same manner. Furthermore, two adjacent tracks out of 81 + 82 m 91 *92
A guard band is formed between the book tracks to avoid crosstalk with each other.

In the color video signal recording and reproducing apparatus that forms either of the track patterns shown in FIG. 8 or FIG. Conversion color recording and playback system V
In TR, the FM luminance signal and the low frequency conversion carrier color signal are simultaneously recorded and reproduced on the same track on the magnetic tape of the non-linear transmission system, so moiré does not occur, and the image recording and reproduction of the luminance signal and color difference signal does not occur. The bands can be made sufficiently wide, and the S/N (signal-to-noise ratio) of the reproduced color difference signal can be improved because the low frequency conversion carrier color signal is not recorded in a biased manner by the FM luminance signal. As described above, it is possible to obtain a reproduced color video signal of higher image quality than that of a VTR using the low frequency conversion color recording and reproducing method.

Problems to be Solved by the Invention However, the above-mentioned conventional color video signal recording and reproducing apparatus has the following problems:
Since both have a guard band, the efficiency of magnetic tape usage is poor, and if the rotating head crosses the guard band and scans adjacent tracks during playback, the 62 adjacent tracks will have FM brightness. Since the signal and the FM color difference signal are recorded separately, the rotary head for the luminance signal (or the rotary head for the color difference signal) records the FM color difference signal (or the FM color difference signal).
Since there is no field correlation between the reproduced signals of both tracks, it is necessary to reproduce the field correlation, as is done in the home VTR that uses the above-mentioned low frequency conversion color recording and reproduction method. There was also the problem that the crosstalk cancellation method used could not be used, resulting in reproduced images with noticeable crosstalk.

Furthermore, in the conventional color video signal recording and reproducing apparatus that forms the track pattern shown in FIG. 9, tracking deviation during reproduction causes a time difference between the reproduced luminance signal and the reproduced color difference signal. That is, in FIG. 10, if the first rotary head that scans the FM luminance signal recording track 81 does not cause tracking deviation as shown by the solid line 13a, the gap with an azimuth angle of -15° is shown in FIG. Assume that it is present at the position shown by the solid line Ga and is reproducing, for example, a horizontal synchronization signal. However, if the tracking deviation occurs upward by D as shown in FIG. 10, the first rotary head is indicated by the broken line 13b.

The gap at that time is the position indicated by Gb, and a position temporally advanced by +Δt from the horizontal synchronizing signal recording position is reproduced. On the other hand, track 8
If no tracking deviation occurs in the second rotary head that scans the track 91 on which the FM color difference signal of the same field as field 1 is recorded, the second rotary head is moved to the position shown by the solid line 14a in FIG. exists and is reproducing the FM color difference signal on that gap ga with an azimuth angle of +15°, but if a tracking deviation occurs in the upward direction by D as above, the second rotary head will move along the broken line 14b. As a result, the gap moves to the position shown by gb, so that F at a position delayed by Δt when the FM color difference signal on the solid line ga should originally be reproduced.
The M color difference signal will be reproduced. Therefore, if the same tracking deviation of D occurs in the first and second rotating heads, the color video signal recording and reproducing apparatus that forms the track pattern shown in FIG. 9 will reproduce a time difference of 2Δt. This occurs between the luminance signal and the reproduced color difference signal, which poses a problem in that it becomes difficult to align the time between the raw signals of both pages.

Therefore, the present invention provides two rotating heads for recording and reproducing FM luminance signals, and a color signal (in this specification, "color signal" is a signal that includes all color difference signals, three primary color signals, and carrier color signals). 2 rotary heads for recording and reproducing the magnetic tape.
It is an object of the present invention to provide a color video signal recording and reproducing device which solves all of the above-mentioned problems by recording M luminance signals and color signals on tracks separated in the tape width direction and reproducing them.

Means for Solving the Problems The color video signal recording and reproducing apparatus according to the present invention includes a rotating body around which a magnetic tape is wound over an angular range of approximately 180°, and first and second luminance signal rotating heads. , first and second color signal rotating heads.

means for forming and recording separate first and second tracks separated from each other in the tape width direction on a magnetic tape; and scanning the first and second tracks to obtain a reproduced luminance signal and a reproduced color signal. It consists of a means of reproduction. The first and second luminance signal rotary heads are mounted at opposite positions on the rotating surface of the rotating body and at the same height. The first and second color signal rotary heads are mounted at opposite positions on the rotating surface of the rotating body at the same height, and the first and second luminance signal rotary heads are mounted at respective mounting positions. They are respectively attached at substantially the same position on the rotating surface of the rotating body and at different height positions in the direction of the rotating axis of the rotating body.

Further, the recording means supplies the frequency-modulated luminance signal to the first and second rotary heads for luminance signals, respectively, and supplies the frequency-modulated color signal or the frequency-modulated luminance signal to the first and second rotary heads for color signal. The first and second tracks are recorded separately by supplying a color signal that is not a color signal.

Effect: Attach the first and second brightness signal rotary heads and the first and second color signal rotary heads to the rotary body... Depending on the selection of the nail position, the first or second brightness signal rotation A first track on which a frequency-modulated luminance signal is recorded by the head, and a second track on which a frequency-modulated color signal or a non-frequency-modulated color signal is recorded by the first or second color signal rotating head. By reducing the inclination of the tracks, recording can be simultaneously and separately performed in areas separated from each other in the tape width direction of the magnetic tape.

Furthermore, if the first and second luminance signal rotary heads have gaps with different azimuth angles, and the first and second color signal rotary heads also have different gaps, there is no guard band. The first and second tracks described above can be recorded. Further, the first luminance signal rotary head and the first color signal rotary head have a gap of the same azimuth angle, and the second luminance signal rotary head and the second color signal rotary head also have a gap of the same azimuth angle. By having a configuration with gaps of the same azimuth angle,
Even if tracking deviation occurs in the two rotary heads that scan the first and second tracks simultaneously and separately during reproduction, the mutual time difference can be minimized or eliminated. Embodiments of the present invention will be described below with reference to FIGS. 1 to 7.

Embodiment FIG. 1 shows an embodiment of a track pattern recorded and reproduced by the apparatus of the present invention.

In the figure, the first and second brightness signal rotary heads Y1 shown in FIG. and Y
2, the first track TY on which the FM luminance signal is recorded
I to TVII+ are formed sequentially at an angle θ with respect to the longitudinal direction of the tape without a guard band, and on the other hand,
In the upper predetermined width area W2, second tracks Tc+ to TCIO on which FM color difference signals are recorded by the first and second color signal rotary heads C1 and C2 shown in FIG. The tracks are formed sequentially at an angle θ with no guard band.
The horizontal same-bright signal recording portions recorded on the TYIO are recorded aligned in the track width direction, as shown with solid lines in FIG. 2, which is a partially enlarged view of the track pattern in FIG. They are recorded in a so-called H arrangement).

Although the conditions for the above H-aligned recording are already widely known, each parameter is selected so as to satisfy the following equation.

(v/F)cosθ=M (N+ (1/2)) However, in the above equation, ■ is the tape running speed, F is the field frequency of the video signal to be recorded, and θ is the tape The track tilt angle of 1M on the format is Track TV.
The recording length of one horizontal scanning period (1H) in I to TYIQ and TCI to Tc+++, N is a positive integer. Such H and recording are effective in reducing the influence of crosstalk from adjacent tracks.

In addition, in FIG. 1, tracks 16+, 162°17 and 1 are recorded along the longitudinal direction of the magnetic tape 15.
8 is a track recorded and formed by a dedicated fixed head, and 161 and 162 are tracks 1. 17 is an audio track in which the audio signal of the second channel is recorded; 17 is a time code track in which a time code for knowing position information on the tape is recorded; and 18 is a control track in which control pulses of a constant period are recorded. .

As shown in FIG. 1, audio tracks 161 and 16
2 is recorded and formed above the second track recording area W2 in the upper receiver in the tape width direction, and time code track 1
7 and the control track 18 are recorded and formed on the lower side of the upper receiver in the tape width direction than the first track recording area W1.

Next, FIG. 3(A) shows an embodiment of the head arrangement of the apparatus of the present invention for recording and forming the above track pattern.
This will be explained together with (B). In the same figure (A), motor 20
The motor shaft 21 passes through the center of the lower fixed drum and connects to the cylindrical upper rotating drum 2, which is an example of a rotating body.
It is fixed at the center of 3. Therefore, only the rotating drum 23 mentioned above is rotated by the motor 20. The lower fixed drum 22 is provided with a tape guide 24, and the lower end of the magnetic tape is guided along the tape guide 24, and the magnetic tape is approximately attached to the circumferential surfaces of the lower fixed drum 22 and the upper rotating drum 23. It is made to travel while being wound over an angular range of 180@.

As shown in the plan view of FIG. 3(B), the upper rotating drum 23 is equipped with first and second brightness signal rotating heads Y1 and Y2 facing each other on the rotating surface of the upper rotating drum 23. together with the first and second color signal rotary heads C
1 and C2 are installed. Further, as shown in Fig. 3 (A), the rotating heads Y1 and Y2 are attached to the upper rotating drum 23 at the same height position, and similarly, the rotating heads C1 and C2 are attached at the same height position. Furthermore, as shown in Figs. 3(A) and (B), the rotating head Y
1 and 01 are attached at different height positions in the direction of the rotation axis of the upper rotating drum 23, and are attached at approximately the same position on the rotating surface. This also applies to the rotating heads ¥2 and 02. In addition, the rotating heads Yl, Y
2. C1 and C2 each have a gap of a predetermined azimuth angle, and the relationship between the head azimuth angle and the signal to be recorded is summarized as shown in the following table.

Next, an embodiment of the signal recording system and reproducing system of the apparatus of the present invention will be described with reference to the block diagram shown in FIG. In the same figure,
Components that are the same as those in FIGS. 1, 3 (A), and (B) are designated by the same reference numerals. In FIG. 4, the luminance signal that has entered the input terminal 26 has a predetermined high frequency component level-enhanced by the emphasis circuit 27, and then the frequency modulator 28
The signal is then frequency modulated to become an FM luminance signal.

FIG. 5 shows an example of the frequency spectrum of this FM luminance signal. In the same figure, ■ indicates 5MH2 to 6MH of the FM luminance signal.
2 indicates the carrier wave shift band, and ■ indicates the lower sideband of the FM luminance signal. This FM luminance signal is supplied to the aforementioned rotary heads Y1 and Y2 through a recording amplifier 29 and a rotary transformer (not shown), respectively.

On the other hand, the color difference signal (R-Y
), (B-Y) are supplied to a frequency modulator 34.35 after their acid layer wavenumber components are amplified by an emphasis circuit 32.33, where the first and second carrier waves are frequency modulated. 1st. This becomes the second FM color difference signal. FIG. 6 shows an example of the frequency spectrum of the first and second FM color difference signals.

In Fig. 6, ■ is the frequency spectrum of the first FM color difference signal obtained by frequency modulating the first carrier wave with the color difference signal @ (RY), and its carrier wave shift band [C is 5MHz to 6MHz].
7 has been selected. On the other hand, in Fig. 6, ■ is a color difference signal (
The second F obtained by frequency modulating the second carrier wave with
In the frequency spectrum of the M color difference signal, its carrier wave shift band rVc is selected to be 0.8 MHz to 1.2 MHz. The above-mentioned first signal extracted from the frequency modulator 34
The FM color difference signal and the second FM color difference signal taken out from the frequency modulator 35 are respectively supplied to a mixing circuit 36, where they are frequency division multiplexed, and then sent to the recording amplifier 3.
7 and a rotary transformer (not shown) to the aforementioned rotary heads C1 and C2, respectively.

As a result, the first field is rotary head Y1.
and C1, the tracks Ty+ and Tc shown in FIG.
+ and 02 are simultaneously and separately recorded on the magnetic tape 15, and the next field is recorded by the rotary heads Y2 and 02.
As a result, tracks TY2 and Te3 are recorded simultaneously and separately. Hereafter, in the same manner as above, 1
Rotating heads Y1 and C1 and Y2 and C2 for each field
and the pair of tracks alternately TY s .

TC3→TY4. TC4→TY5. Records are sequentially formed in the order of TC5→161. In this way, the FM luminance signal with the frequency spectrum shown in FIG. 5 is recorded on the track TY1-5-TY10, and
A frequency division multiplexed signal consisting of the first and second FM color difference signals having the frequency spectrum shown in FIG. 6 is recorded in c+ to TCIO.

Next, to explain the operation during reproduction, the recording tracks TYI to TYIO on the magnetic tape 15 are alternately scanned field by field by the rotary heads Y1 and Y2, and after the recorded edge FM color difference signal is reproduced, rotary transformer,
The signal is supplied to the FM demodulator 40 through a switch circuit (none of which is shown) and a reproducing preamplifier 38 for converting it into a continuous signal.

Meanwhile, at the same time, the recording track T on the magnetic tape 15
C+ to Tc+o are alternately scanned field by field by rotary heads C1 and C2, and the recorded frequency division multiplexed signal is reproduced. This reproduced frequency division multiplexed signal is supplied to bandpass filters 43 and 44, respectively, through a rotary transformer, a switch circuit for making a continuous signal (not shown), and a reproduction preamplifier 39, where the first and second FM color difference The signals are separated into waves.

The reproduced luminance signal obtained by FM demodulation by the FM demodulator 40 is sent to the output terminal 4 through the de-emphasis circuit 41.
Output to 2. On the other hand, the reproduced first FM color difference signal taken out from the bandpass filter 43 is supplied to the FMIj modulator 45, and the reproduced second FM color difference signal taken out from the bandpass filter 44 is supplied to the FMIj modulator 45.
The FM color difference signal is supplied to the FMtlli device 46. As a result, reproduced color difference signals (R-Y) and (B-Y) are respectively taken out from the FM demodulators 45.46 and outputted to the output terminal 49.50 through the de-emphasis circuits 47.48.

Note that FIG. 4 is a block system diagram of one embodiment showing the outline of the recording/reproducing system, and in reality, other necessary known circuits are provided as appropriate, and the audio tracks 161 and 162 shown in FIG. An audio signal recording and reproducing system for recording and reproducing the time code track 17, a time code recording and reproducing system for recording and reproducing the time code track 17, a control signal recording and reproducing system for recording and reproducing the control track 18, a servo system, etc. are also provided. However, since these have no direct relation to the gist of the present invention, illustrations and explanations thereof are omitted.

As described above, according to this embodiment, the recording area W1 of the FM luminance signal recording tracks TVI to TYI11 and the recording area W2 of the FM color difference signal recording tracks Tc+ to Tc+o are completely separated in the tape width direction. , interference between reproduction signals of both tracks can be completely eliminated. Also,
Even if the rotating head Y1゜Y2 (or C1,02) scans an adjacent track due to tracking deviation, the adjacent track will receive 1 of the recorded green signal of the track to be scanned.
Since the same type of FM luminance signal (or FM color difference signal) is recorded before or after the field, there is a field correlation, so crosstalk between adjacent tracks can be canceled using a known crosstalk cancellation circuit that uses field correlation. Can be removed.

It should be noted that the present invention is not limited to the above embodiments, but also includes various other modifications. for example,
I as the first and second color difference signals.

A Q signal may be used, and two types of color difference signals processed by time division multiplexing instead of frequency division multiplexing may be recorded and reproduced. In this case, 1 is shown in FIG. 7 (A>, (B)).
Two types of color difference signals (RY) and (B-Y) schematically shown for each H ((RY),
The subscripts (B-Y) indicate the line numbers), and after compressing the time axis by 1/2 by known means, they are compressed every H/2 as schematically shown in Figure 7 (C). The FM time division multiplexed signal obtained by alternately time division multiplexing and frequency modulating the - carrier wave with this time division multiplexed signal is recorded and reproduced by the rotary heads C1 and C2. After the reproduced FM time-division multiplexed signal is subjected to FMIWA, it is alternately inputted every H/2 to two time-axis expansion circuits that perform double time-axis expansion by known means, thereby converting the respective time As schematically shown in FIGS. 7(D) and (E), reproduced color difference signals (RY) and (BY) returned to the original time axis are obtained from the axis expansion circuit.

Further, the signals recorded and reproduced by the rotary heads C1 and C2 may be color signals (for example, a multiplexed signal of a low frequency conversion carrier color signal and a bias signal, or a frequency modulation of a carrier wave with a low frequency conversion carrier color signal). The obtained FM low frequency conversion carrier color signal, the FM line sequential color difference signal, or a multiplex signal of three types of FM signals obtained by separately frequency modulating the three primary color signals may be used.Furthermore, the rotating head Y1.Y2.C1 The rotary body to which C2 and C2 are attached may have a structure in which flat rectangular head bars are arranged in two stages, upper and lower.Furthermore, the rotary heads Y1, Y2, 01 and C2 have the same azimuth angle and are attached to a guard band. Alternatively, the azimuth angles of the rotary heads Y1 and CI, and the azimuth angles of Y2 and C2 may not be selected to be the same.

Effects of the Invention As described above, according to the present invention, the mounting positional relationship between the first and second luminance signal rotary heads and the first and second color signal rotary heads is selected to have a predetermined relationship. Therefore, it has many features as follows.

■ FMi
The recording area of the first track where the i degree signal is recorded and the recording area of the second track where the color signal is recorded by the first and second color signal rotary heads are aligned with each other in the tape width direction. Since they can be completely separated, mutual interference between the reproduction signals of both tracks can be completely eliminated.

■ In relation to ■, even if the first and second luminance signal rotary heads (or chrominance signal rotary heads) scan across adjacent tracks due to tracking deviation, the signals recorded on the adjacent tracks are Since these are F and M luminance signals (or chrominance signals) before or after the field and have field correlation, crosstalk from adjacent tracks can be removed by a crosstalk cancellation method using field correlation.

(2) By configuring the first and second luminance signal rotary heads to have gaps of different azimuth angles, and by configuring the first and second color signal rotary heads to have gaps of mutually different azimuth angles, Guard bands required in conventional equipment (in the track pattern shown in Figure 8, guard bands are formed at a rate of about 15% in 2 track pitches (1 pitch), and in the track pattern shown in Figure 9, guard bands are formed at a rate of about 15% in 1 pitch). This makes it possible to eliminate the formation of a guard band (to some degree), thereby making it possible to improve the efficiency of tape utilization compared to the conventional method.

In this case, the guard band between adjacent tracks becomes zero, but in the track pattern shown in FIG.
A guard band is essentially formed between the tape and Wl (actually, this part is overlappingly recorded, but is not used due to head switching during playback), but this has a negative effect on tape utilization efficiency. Compared to the effect of the present invention of eliminating guard bands between tracks, this has a practically negligible effect.

■ The first brightness signal rotary head and the first color signal rotary head each have gears with the same azimuth angle, and the second brightness signal rotary head and the second color signal rotary head By configuring them to have gaps of the same azimuth angle, even if a tracking deviation occurs in the two rotary heads that scan the first and second tracks simultaneously and separately, both rotary heads The occurrence of a time difference between reproduced signals from the source can be made extremely small or zero.

(2) By recording in H-alignment, it is possible to ensure high correlation between information between adjacent tracks, and even if there is crosstalk, it can be prevented from appearing visually.

(2) It is possible to record and reproduce high-quality color video signals with higher recording densities.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a track pattern recorded and reproduced by the apparatus of the present invention, and FIG.
A partially enlarged view of the illustrated track pattern, FIG. 3<A),
(B) is a front view showing an embodiment of the head arrangement of the apparatus of the present invention, FIG. 4 is a block system diagram showing an embodiment of the signal recording/reproducing system of the apparatus of the present invention, and FIGS. The figures are a diagram showing an example of the signal frequency spectrum of the main part in the block system shown in Figure 4, Figure 7 is a schematic diagram illustrating another example of the color signal recorded and reproduced by the apparatus of the present invention, and Figure 8. 9 and 9 are diagrams showing each side of a track pattern recorded and formed by a conventional apparatus, respectively, and FIG. 10 is a diagram showing a time shift when a tracking deviation occurs during reproduction in a conventional apparatus for recording and forming a track pattern shown in FIG. 9. FIG. 1.7.15...Magnetic tape, 21-23.8+. 82.8i... Frequency modulated luminance signal recording track,
31 to 33.9+, 92.9i... Frequency modulated gap signal recording track, 20... Motor, 22... Lower fixed drum, 23... Upper rotating drum, 24...
Tape guide, 26... Brightness signal input terminal, 28.3
4゜35...Frequency modulator, 30...Color difference signal (R
-Y>Input terminal, 31...Color difference signal (B-Y) input terminal, 36...Mixing circuit, 40.45.46...FM
III unit, 43.44... bandpass filter, 49...
- Reproduction color difference signal (RY) output terminal, 50...Reproduction color difference signal (B-Y) output terminal, Wl...first track recording area, Wl...second track recording area, Yl ,
Y2...Rotary head for luminance signal, CI, C2...Rotary head for color signal.

Claims (5)

[Claims] (1) A rotating body around which a running magnetic tape is wound over an angular range of approximately 180 degrees, and first and second magnetic tapes attached at the same height at opposing positions on the rotating surface of the rotating body.
and a luminance signal rotary head mounted at opposite positions on the rotating surface of the rotating body at the same height, and with respect to the respective mounting positions of the first and second luminance signal rotary heads. The first and second color signal rotating heads are respectively mounted at substantially the same position on the rotating surface of the rotating body and at different height positions in the direction of the rotating axis of the rotating body, and a frequency modulated luminance. a signal to the first and second luminance signal rotary heads, respectively, and a frequency modulated color signal or a color signal without frequency modulation to the first and second color signal rotary heads. , forming separate first and second tracks on the magnetic tape in which the frequency-modulated luminance signal and the frequency-modulated color signal or the non-frequency-modulated color signal are separated from each other in the tape width direction; means for recording the first and second luminance signals by means for recording the first and second luminance signals;
and a reproducing means for obtaining a reproduced luminance signal and a reproduced color signal from a reproduced signal obtained by scanning the second track with the first and second rotary heads for color signals. A color video signal recording and reproducing device characterized by: (2) The first and second brightness signal rotary heads have gaps of different azimuth angles, and
2. The color video signal recording and reproducing apparatus according to claim 1, wherein the color signal rotary heads also have gaps of different azimuth angles. (3) The first rotary head for brightness signal and the first rotary head for color signal have the same azimuth angle gap, and the rotary head for brightness signal and the second rotary head for color signal have the same azimuth angle gap. 3. The color video signal recording and reproducing apparatus according to claim 2, wherein the rotary heads have the same azimuth angle gap. (4) The signals recorded and reproduced on the second track by the first and second color signal rotary heads are the first signals obtained by frequency modulating the first carrier wave with the first color difference signal. Claim 1, characterized in that it is a frequency division multiplexed signal of a frequency modulated wave signal and a second frequency modulated wave signal obtained by frequency modulating a second carrier wave with a second color difference signal. 1
A color video signal recording and reproducing device according to any one of items 1 to 3. (5) The signals recorded and reproduced on the second track by the first and second color signal rotary heads are signals obtained by compressing the time axis of the first and second color difference signals, respectively. Claims 1 to 3 are characterized in that the signal is a frequency-modulated wave signal obtained by time-division multiplexing alternately in each horizontal scanning period and frequency-modulating a carrier wave with the time-division multiplexed signal. The color video signal recording and reproducing device according to any one of the items.