JPS6265201A - Rotary transformer device - Google Patents

Abstract

PURPOSE:To prevent crosstalk from being caused by arranging a short ring or unused annular coil between annular coils in use for either of the 1st and the 2nd recording formats. CONSTITUTION:Three grooves with constant width are cut concentrically in the reverse surface of a rotary core 22R and the top surface of a fixed core 22S; and short rings 24 and 25 are provided in the center grooves, the 1st annular coils 261 and 271 are embedded in the outside grooves, and the 2nd annular coils 262 and 272 are set in the inside grooves. Further, four grooves with constant width are cut concentrically in the reverse surface of a rotary core 23R and the top surface of a fixed core 23S; and the 5th annular coils 301 and 311, the 3rd annular coils 281 and 291, the 6th annular coils 302 and 312, and the 4th annular coils 282 and 292 are embedded in those grooves in order from the outer peripheral sides to the inner peripheral sides. The respective annular coils and short rings 24 and 25 are positioned opposite each other similarly to the annular coils 261 and 271.

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to a rotary transformer device D, in particular a rotary transformer device that rotates 16 times integrally with a rotating body to which a plurality of rotating heads are attached.
The present invention relates to a rotary transformer device in which two sets of a rotating core and a fixed core provided opposite to the rotating core are provided, and signals are transmitted and received separately between them. Conventional Technology Currently, there is a helical scan type magnetic recording and reproducing device that uses 1/2 inch wide magnetic tape! f (VTR) can record and play back for home use (because the 1-screen area is relatively narrow,
Of the luminance signal and carrier color signal separated from the color video a signal, the luminance signal is frequency-modulated to become a frequency-modulated wave, and the carrier color signal is converted to a low-frequency carrier color signal. The system employs a so-called low-pass conversion color recording system in which the frequency division multiplexed signal is multiplexed on a magnetic tape, and then re-multiplexed. A guard panless recording method is adopted in which the azimuth angle of each rotary head for recording adjacent tracks is different.In contrast, commercial VFRs intended for broadcasting use a camera-integrated VFR.
In the case of TR, the luminance signal and the color signal are separated using separate rotating heads on a magnetic tape with the same tape width as a commercial VTR for the purpose of reducing the size of the head, making fym, and improving the quality of the reproduced color video signal. Y that records on a track and records with a guard band between adjacent tracks and plays it back.
/C separate recording and playback system is adopted. However, the above-mentioned Y/C split color recording/playback system VTR is not compatible with the above-mentioned low-range conversion color recording/playback system VTR, and is not compatible with the low-range conversion color recording/playback system described above. It is desirable to be able to select and record and play back on a single device. Therefore, the present applicant filed a patent application dated September 4, 1985 (
4) We proposed a magnetic recording method (invention title: ``11-Ki Recording Method'') that solved the above problems and met the above requirements. Problems to be Solved by the Invention However, according to the above-mentioned magnetic recording method proposed by the present applicant, magnetic recording devices having gaps of different azimuth angles are installed at opposing positions on the rotating surface of a rotating body. 1
and the second rotary head and the first and second rotary heads are respectively mounted close to each other in the rotational direction of the rotary body with respect to the position, and the heights above the rotary body in the rotational axis direction are different. At least third and fourth rotary heads having gaps of mutually different azimuth angles are provided, and the recording information signals are supplied to at least these four rotary heads, or these four m. The reproduction information signal from the rotary head is supplied to the reproduction circuit through the rotary lance, so when a rotary transformer is installed in a small-diameter rotating body, the number of heads is large (4 or more), so it is difficult to cross Talk becomes a problem. For example, in the case of recording using the Y/C separation method (first recording mode) described above, one of the four rotating heads is used, so the rotating head during the recording pause period does not affect the rotating head during recording. Crosstalk becomes a problem, and for example, in the case of recording using the low frequency conversion color recording method (second recording section 1), 411
Since we will be using two rotating heads in 111, there will be two unused
Recording and reproduction of zero-stroke signals becomes a problem due to the use of multiple rotary heads. Therefore, the present invention divides the rotary transformer into upper and lower stages, and arranges the short ring or unused coil in the approximately central groove of the plurality of concentric grooves of each rotary transformer. The purpose is to provide a rotary transformer that solves the problem. Means for Solving the Problems The rotary transformer device according to the present invention has first to fourth
of the rotating heads, the first and third rotating heads and the second rotating head.
and the fourth rotating head every one track scanning period.
A first recording mode in which two parallel tracks on which first and second information signals are recorded separately are sequentially formed on a magnetic tape; Two rotary heads mounted at opposing positions are used to alternate between every 11 rack scans to sequentially record f tracks on which the third information signal is recorded onto the magnetic tape. 0 rotary transformer device 4 of a magnetic recording and reproducing apparatus that selectively performs a second recording mode of recording, in the direction of the rotational axis of the rotary body to which the first to fourth rotary heads are attached, η a first and a second rotating body arranged at different heights and rotating integrally with the rotating body;
a rotating core, and first and second fixed cores that are separately arranged on one side of each of the first and second rotating cores so that one side of the cores is spaced apart from each other and facing each other, Concentric first and second annular coils are provided on each of the spaced opposing surfaces of the fixed core so as to face each other, and a first annular coil is provided between the first and second annular coils. A short ring or an unused first coil is provided respectively, and each of the spaced apart opposing surfaces of the second rotating core and the second fixed core has
a concentric third and fourth annular coils are provided to face each other, and a second annular short ring or an unused second coil is provided behind the third and fourth annular coils, respectively; One end of each of the first and second annular coils installed on the first rotating core is separately connected to the first and second rotating heads, and the third and second annular coils installed on the second rotating core are connected separately to the first and second rotating heads. One end of each of the fourth annular coils is separately connected to the third and fourth rotary heads. Further, the rotary transformer device according to claim 2 further includes fifth and sixth rotations for recording a fourth information signal in a deep portion of the magnetic layer of the magnetic tape in the second recording mode on the rotating body. In addition to several heads, a fifth annular coil is provided at the outermost or innermost periphery position of each of the second rotating core and the second fixed core, and between the third and fourth annular coils. is provided with a sixth annular coil, and one end of each of the fifth and sixth annular coils of the second rotating core is connected to the fifth annular coil. It is configured to be separately connected to the sixth rotary head. Operation In the first recording mode, one of the first and second information signals recorded simultaneously is transmitted through a first rotary transformer including a first rotating core and a first fixed core, and a second rotating core. The information (3@) is supplied to the rotating head through one of the second fixed core and the second rotary transformer through the lance, and the information (3@) is supplied to the rotating head through the other rotary transformer. , and the relationship changes to alternating η during one track scanning period.
, crosstalk in the rotary transformer between image information signals
This will never occur. Further, the second recording mode 11
5, the third information signal is supplied to the rotating head through the annular coil of the first or second rotary transformer;
Since 1j show 1 ~ ring or a short-circuited unused coil is arranged between two ring-shaped coils that are used alternately every one track scanning period, [1 rotary coil of the third information signal] Almost no crosstalk occurs within the transformer. Also, in the second recording mode, the third information signal is transferred to the tape magnetic tape t.
! When recording on the surface layer of the l1 layer and recording a fourth information signal on the depth WAglS of the tape magnetic layer, the third information signal is always supplied to the rotary head through the first rotary transformer, and the fourth information signal is supplied to the rotary head through the first rotary transformer. The information signal is transmitted between the 5th and 5th sides of the second rotary transformer. The sixth annular coil is alternately passed through each track scanning period to be supplied to the rotary head, and at that time, the third and fourth annular coils t of the second rotary transformer are unused. Crosstalk between the fourth information signals transmitted through the sixth toroidal coil is prevented. Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings of FIGS. 1 to 10. 1(A) to 1(C) are a plan view and a vertical cross-sectional view of various parts showing an embodiment of the apparatus of the present invention, and FIG. (B) does not show an exploded sectional view of the main parts of the device of the present invention. In both figures, the same constituent parts are denoted by the same reference numerals 11 and 11. As shown in FIG. 1(C), a motor shifter 1 shift 18, which is pivotally supported by bearings 16 and 17, runs through the center of the lower fixed drum assembly 15, and the tip of the motor shirt 1-18 is fixed to the lower part. It is fixed to the center of the rotating surface of an upper rotating drum (not shown) located above the drum assembly 15, and the motor shaft 18 is rotated by a motor consisting of a rotor 19 and a stator 20. [-As shown in FIG. 1(C) and FIG. 2(A), one shaft 18 is fixed to the center of the flywheel 21,
The flywheel 21 has an upper surface of a small-diameter disk-shaped first rotating core 22R fixed to its inner upper surface with adhesive, and a second disk-shaped large-diameter rotating core 22R attached to the annular lower end of the flywheel 21. -L portion of 23R is fixed with adhesive. Therefore, the rotation of the motor shaft 18 causes the upper rotating drum, flywheel 219 rotating cores 22R and 23R
The people rotate as one. On the other hand, as shown in FIGS. 1(C) and 2(B), the lower fixed drum assembly 15 has a small-diameter disk-shaped first fixing hole 22S/fi adhesive fixed above the bearing 16. Further, 18 large-diameter disk-shaped second fixed cores 23S are fixed below the core. The fixed cores 22S and 23S shown in FIG. 2(B) are always kept stationary regardless of the rotation of the motor shaft 18. Also, Figure 1 (
As shown in C), the rotating core 22R and the fixed core 22S have the same diameter and are spaced apart from each other by a very large distance. The rotating core 23R and the fixed core 238, which are located above and below the rotational axis of the motor shaft 18, are the same (disposed opposite to each other and spaced apart from each other). This constitutes a second rotary l-lance.As shown in FIG. Three grooves of a constant width are carved concentrically, of which short rings 24 and 25 are provided in the middle groove, first annular coils 261 and 271 are embedded in the outer groove, and The vortex has a second annular coil 262 and 2
72 are buried. In addition, four concentric grooves of a constant width are formed on the lower surface of the rotating core 23R and one surface of the fixed core 238, respectively, and a fifth annular groove is formed in these grooves in order from the outer circumferential side to the inner circumferential side. Coil 30+ and 311. Third annular coil 28+ and 29I, sixth annular coil 302
and 312. Fourth toroidal coils 282 and 292 are embedded. The annular coils 26+ and 271 are located at opposite positions, respectively, and similarly the annular coils 262 and 272''
, 281 and 291° 282 and 292.30+ and 31+,
302 and 312° short rings 24 and 25 are provided at positions facing people, as shown in FIG. 1(C). One end of the annular coil 261 of the rotating core 22R is connected to a rotating head 14M1, which will be described later, and one end of the annular coil 262 is connected to a rotating head Hsz, which will be described later. Also, one end of each of the annular coils 28+ and 282 of the rotating core 23R is separately connected to the upper rotating head Hs+ and 8M2, which will be described later, and one end of each of the annular coils 30+ and 302 is connected to the audio pot rotating head HAI and HA2, respectively. It is connected. During recording or reproduction, the rotary cores 22R and 23R rotate integrally with the rotating body and the motor shaft 18, while the fixed cores 22S and 238 are always in n1 position, and the annular coils 261 and 271, 262, 272, . 28+ and 2
9+, 282 and 292° 30+ and 31+, and 302
Signals are transmitted and received between and 312 without contact. Next, the arrangement Wi of the above-mentioned rotary head will be explained in more detail with reference to FIG. The third rotating head Hs+ and the fourth rotating head HM
2 is installed at a position facing 180° on the rotating surface (and is mounted at a distance of 111° from the rotating head HMIIH32).
It is mounted at a position that is backward in the rotational direction by 1jc, and at a position that is 45μN higher than the lower ends of the upper rotating heads HM+, Hs2 in the rotational axis direction of the rotary body. These rotating heads HMI, Hs+, 8M2 and 1''S2
The track widths of the tracks are each equal to 29μ, and their azimuth angle rfl is selected to be the same as the azimuth angle of the rotating head standardized in the current low-frequency conversion color recording/reproducing system VTR. Therefore, the azimuth angle of the rotating heads IM+ and 1s+ is, for example, -6
The azimuth angles of the °1 rotating heads 11M2 and ) 132 are each selected to be -6°. In addition, the rotary head HMI and HS2
An audio-only rotary head lA2 is installed at a position 275 μm higher than the lower end of the head. In addition, the rotating head 1"82
Same as (at position 17 and opposite position 1800,
Audio (Rotary head l-1 AI for II is installed. Therefore, rotary head 1] A1 is 2 b !+ 'to the preceding A17' in the rotational direction relative to the rotary head HMI.
? Nitori 6I GJ is being used. Rotating head HA for Ryo voice
+ and 1^2 each have a track width of 21μ and are 11A.
The azimuth angle of 1 is +30°, that of 1-182 is -3
0°, respectively. Figure 4 (A> is a more detailed view of the rotating head Hs+ and HMI from the sliding surface. The rotary head 1 (sl and HM+Gj Fig. 11) is attached to the tip of the helad base 35 on the instep as if it were small (the rotary head 1 (s2 and t1M2)
). As a result, a track pattern as shown in FIG. 5 is formed on the magnetic tape 36. In the bit diagram, magnetic chi 1
Two A-di A1-racks 37I and 372 are formed at the upper end of the tape 36 along the longitudinal direction of the tape, and at a constant period (for example, 1 frame) at the lower end of the tape along the longitudinal direction of the tape 7'J. ) controls 1 to 38 are formed in which the 1st pulse of rv
+, Tv2, and 1Y3 are the first information f, the bright melon signal No. 4 is frequency-modulated and recorded for one field at a time (actually, the Δ-burlap recording period is added to this). The tracks Tc+, Tc2, and rcg contain the second information (+"i"'i). The IC track is recorded and is formed at an angle with respect to the 1000-degree direction.The racks Y1 and Tc+ are connected to the first rotary head 11M1 and the third rotary head 11M1. Separately with the rotating head 11s1,
At the same time, they are formed via a wide guard band G1, and between the next one field m, racks i to rc2 and Tv2 are connected to the second rotating head ls2 and the fourth rotating head 1M.
2 separately and at the same time wide guard band G
Formed via 2. During the next 1 field rF1, i・rack king Y3 and T(・3 are the above rotating head 1-
1M+ and [(sl) separately and are formed via a wide guard band G3 on B and S. Also, a guard band is formed between tracks TY2 and TY3 and between Tc+ and Te3. (Also, a very small guard band is formed.) Figure 5 shows that the rotating head HM1.
, when the end of the TCI is reached, the rotating heads H32, H
Consider the situation when M2 moves +n to the starting end of the next track Tc 2 , Tv 2 . Next, an example of a recording device having the above-mentioned rotary transformer 6' and a rotary head will be explained with reference to the block system diagram in FIG.
W2 and S W 3 are connected to the contact a side when recording is performed using the Y10 separation recording method (in the first recording mode), and on the other hand, when recording is performed using the low frequency conversion color recording method (in the second recording mode). ) is switched to the contact side. In addition, an FM modulator 641, which will be described later. ．． The carrier wave frequency of 64R and the pass characteristics of band filters 65L and 65R are configured to be changed at a predetermined time according to switching of changeover switches SW+ to SW3. First, Y
To explain the case of recording using the /C separation recording method, in FIG. 6, a composite color video signal inputted to an input terminal 40 is supplied to a decoder 41, where frequency selection, demodulation, etc. are performed. , a luminance signal Y, and two types of color difference signals RY and BY. The luminance signal Y has a wider band than the tf intensity signal recorded by the low-pass conversion color recording/reproduction method, and is passed through a low-pass filter 42.79127792 circuit 43° white/dark (W/D) clip circuit 44 to be converted to FM. The signal is supplied to the modulator 45, where it is frequency modulated and converted into a frequency modulated luminance signal (FM luminance signal) with a carrier wave shift band of about 5 MH2 to 6 MHz. This F
The M luminance signal is supplied through the recording amplifier 46 to the contact a of the switch SW2 and the rotary head HM2. Note that unlike the conventional low-pass conversion color recording and reproducing system, no high-pass filter is required on the output side of the FM modulator 45. This is because only the FM luminance signal is recorded on one track. On the other hand, the above color difference signals R-Y, Fl-Y are passed through low-pass filters 47, 48 . Clamp circuit 49.50, pre-emphasis circuit 51, 52, white/dark clip circuit 53
．． 54 to an FM modulator 55,56. As a result, the first FM color difference signal is taken out from the FM modulator 55, and the second FM color difference signal is taken out from the FMe modulator 56. These first and second FMC2ff
Jin 5 < is the roar range filter 57. The signal is supplied to an adder 59 through a low-pass filter 58, where it is subjected to a frequency separation filter Φ, and is supplied to a contact a of a switch fsW3 and a rotary head Hs+ through a recording amplifier 60. Further, the input composite color video signal is transmitted to a conventional recording circuit 6.
1, where it undergoes recording signal processing using a conventionally well-known low frequency conversion color recording and reproducing method to produce a third frequency υl multi-width signal consisting of an FMtl + degree signal and a low signal conversion carrier color signal. After being converted, it is supplied to the contacts of the switch SW2 and the contact of the switch SW3. Further, the left channel δ voice signal inputted to the input terminal 62 and the right channel f1 voice signal inputted to the input terminal 62R are sent to a pre-emphasis circuit 63L. 63R, FM modulators 64L, 64R, and bandpass filters 65L, 65n to an adder 66, where they are frequency division multiplexed. A first frequency division multiplexed signal consisting of first and second frequency modulated audio signals (FM voice signals) is supplied to a common contact of the switch S W +. Here, since the switches 5WI-8W3 are connected to the contact point 21 as described above during Y/C separation recording, the above-mentioned first frequency division multiplexed signal is supplied to the C adder 59 through the switch SW+. Here, the first and second FM color difference signals described above are frequency-division multiplexed to form a second frequency-division multiplexed signal. It is supplied to the rotary head Hs+ through the coils 292 and 282, respectively, and to the rotary head H92 through the switches SW3, 1m type -JI/L/29+ and 28+, respectively. The received FM brightness signal is transmitted to the rotary head 1 through the annular coils 272 and 262.
1M2 while switch SWz. The annular coils 271 and 261 are respectively fed to the rotary head HMI. As a result, a track pattern as shown in FIG. 5 is formed on the magnetic chip 736. Considering compatible playback on home VTRs using the current low frequency conversion color recording and playback system, several rotary heads HMI, 8M2, Hs+ and H32 are used, and the magnetic tape has an angular range of over 180°. The diameter of the rotary body wound diagonally at D must be the same as the diameter of the rotary body of the home VTR mentioned above, and the tape should have the same diameter as the scanning track trajectory of the rotary head when the magnetic tape stops running. The angle with respect to the longitudinal direction (methyl inclination angle) must also be the same as that of the home VTR. Even if these conditions are satisfied, in order to form the track pattern shown in Figure 5, the tape running speed must be made faster than the tape running speed in the standard mode of the home VTR, and Then, the recording time becomes a specific value, and conversely, if the recording time is set to a desired time, H-aligned recording will not be possible. However, even when the tape running speed is increased as described above, by selecting the distance #IC between the upper rotating head Is+ or 8M2 and the lower rotating head HMI or HS2, recording can be performed in parallel. is possible. For example, several rotary heads 4 facing each other 180°
M+ and H92, or Hs+ and 1'' M2, the starting edge of the track recorded in one field is 28 ( /ζ, 1" is horizontal scanning 1f@) [When located above 1 in the track width direction (hereinafter referred to as "r2H shifted pattern"), the distance Il! +0 IC, 51-1
The track pattern when selected is as shown in FIG. 7, where two adjacent tracks on which the same information signals are recorded, Zunawara Tc+ and King c2 or TY2.
and the horizontal direction Ill signal recording position of TY3 (indicated by a solid line in FIG. 7) is aligned in the track width direction.

Also, two adjacent signals (for example, 01 and C2゜Yl and Y2) are recorded over a period of 1 field + 1.5H for 13I.
This is a signal with a certain distance. On the other hand, in the case where a shifted pattern is formed and the distance C is set to -0,5H, the upper rotating head 1-1s+ is V. 11M2 to the lower rotating head HM1. bo from H92,
If the rotational direction is avoided by 5N, a track pattern as shown in FIG. Jingo Y1 and Y2 or C+
The time interval between and 02 is 1 field and 2.5 days, and the interval between 111 and 02 is longer than in the case of the track pattern shown in FIG. In order to perform crosstalk cancellation using field correlation during playback, two adjacent
It is desirable that the signal be as close as possible to one field, so that the signal content is more similar to that of the signal, and therefore, it is preferable that the signal is as close as possible to one field.
f11. i-0,51 (10.51-1 is more preferable. In other words, lower rotating head HMI and 1]s
It is more advantageous in terms of H alignment recording and crosstalk cancellation to install 2 in a position that precedes the rotating head IsI and 8M2 on the first side in the rotational direction. In each track pattern shown in FIGS. 7 and 8, the width of each 1-rack is 27 μs, the t-rack pitch is 77 μm, and the distance between the same type of information signal recording tracks is 3 μm.
A slight guard band is formed between the two recording tracks (for example, TYI and Tc+,
Tcz and TY2. A wide guard band of 16 μ- is formed at TY3 and Te3). According to this embodiment, a wide guard band is provided between the adjacent +j''4 information signal recording racks, so that the rotating heads 1''Ml and Hs I, which have gaps of the same azimuth angle, Or 11M2 and H
Even in the I~ racks recorded simultaneously and separately by s2, crosstalk from adjacent tracks hardly mixes into the reproduced signal. On the other hand, between adjacent information signal recording tracks of the same type, the guard band is extremely small or there is no guard band; ]s2
Due to the azimuth expiry of the Sung Dynasty, there is almost no cross 1 hake, and H-aligned recording reduces crosstalk.
Since an approximate signal (luminance Shingetsu 9 color l signal) with good no yield correlation is recorded, it is possible to use field correlation and O-suitk cancellation, and from below-1, AS
Even if I- cannot be used, crosstalk can be prevented from becoming a problem. Note that when recording is performed based on the Y/C separation recording method described in -F, the audio-only rotary heads H 1 and HA2 shown in FIG. 3 are not used. Therefore, in this case, the annular coils 30+, 302, 31+, and 312 are not used, and by shorting one end of each of the annular coils 302 and 312, it is possible to provide the same effect as show milling. As a result, the annular coils 281 and 28
2 and between 291 and 292, a short ring is substantially formed between the information signals recorded by the upper rotary heads Hs+ and 8M2 in the second rotary transformer. It is possible to prevent glue from entering the stalk from one side to the other. Next, a case will be described in which recording is performed based on the low frequency conversion color recording method. While running the magnetic tape at the same running speed as in the standard L-mode or long-time mode in the current home VTR J3, the rotating head 1" Ml and HS2
, or 1''sl and 8M2. Also,
At this time, the rotating heads tlA+ and HA2 are used. Note that either the upper rotating head Hs+ and l-1M2 or the lower rotating head 11M1 and H37 can be used, but in this embodiment, the lower rotating head HMI
and 11s2 are used. This is to eliminate the effect on recording even if there is a slight crosstalk between the heads.
If the leaked information signal is recorded to M1 and 8M2, the recorded portion is then scanned and recorded by the lower rotary head) Ml and HS2, so the unnecessary recorded portion by the lower rotary head Hs+ and 8M2 is erased. This is because it is powerful. In FIG. 6, when recording based on the low frequency conversion color recording method, the switch SVV+
, SW2 and SW3 are switched connected to the contact points. At the same time, the recording amplifiers 21 and 35 are also disabled, blocking the signal supply to the rotary heads Hs+ and 8M2. Further, there are two types of recording in this case: a standard mode and a long-time mode, and one of them is selected depending on the user's intention. In the standard mode, the magnetic tape 43 is run at the same predetermined running speed as in the standard mode of current home VTRs, for example, with a track pitch of 58 μm, and in the long time mode, for example, the track pitch is 193 μm, which is the same as the current running speed. Runs 17t at the same running speed as in the long-term mode of a home VTR! It is closed. Further, the third frequency division multiplexed signal taken out from the conventional recording circuit 61 is transmitted to the switch SW2, the front IM-shaped coils 271 and 2.
61 respectively to the C rotary head 1''Ml, while switches SW3. It is supplied to the rotary head H32 through the annular coils 272 and 262, respectively. On the other hand, the first FM audio signal and the second FM audio signal are output from the adder 66.
A fourth frequency division multiplexed signal consisting of the lu voice signal is taken out and passed through the switch SW+ and the recording amplifier 67 to the second frequency division multiplexed signal.
One is supplied to the rotary heads L1^1 and 1-1^2 through the annular coils 311 and 301, and the other through the annular coils 312 and 302, respectively. Therefore, in this case, 1) η annular coil 28+,
282.29+ and 292 are not used, and by shorting one end of each of the toroidal coils 281 and 291,
It can have the same effect as a short ring. As a result, between the annular coils 301 and 302, and
A short ring is substantially formed between 11 and 312, and it is possible to prevent the fourth frequency division multiplexed signal from entering the other channel as crosstalk within the rotary transformer. FIG. 9(A) shows the track pattern for J3 in the standard mode. In the same figure, the magnetic tape 70 is run at a predetermined speed such that the track pitch is 58μ. Frequency-modulated luminance signal and the low frequency conversion carrier color signal that occupies the vacant frequency region on the low frequency side.The third frequency component 1111 multiplied by one field of Uff1 is first converted into a 1 field with a width of 29 μm by the rotating head)'s2. - From the point in time when recording begins on the rack (video track) Ts+ and the rotary head 1-IS2 rotates 75 degrees, the frequency-modulated audio signal (fourth frequency division multiplex @) has already been generated by the rotary head 1181 immediately before that point. is recorded by scanning the 4-dioracic TAI having a width of 27 μm to form a track Ts+ on the audio track TAI. Here, in the audio track TA+, the fourth frequency division multiplexed signal is recorded from a relatively low frequency r to a deep part of the magnetic layer, whereas the frequency modulated luminance signal is recorded at a frequency r^. , and since the low frequency conversion carrier color signal is unsaturated recorded, it is recorded only in the surface layer portion of the magnetic layer. Therefore, it is possible to avoid having both i-racks 91 and 11 coexist on the same tape. From the time when the rotating head 1'A2 rotates by 105 degrees, the rotation of the audio track TA2 by the rotating head 1'A2 can be avoided. When recording is started and the rotary head H32 has rotated 180 degrees, the rotary head 1''Ml starts recording the next one field of the third frequency division multiplexing (No. ii).The rotary head HMI is A track TS2 with a width of 29 μ- is formed on the track T^2.Hereafter, in the same manner as above, the rotary head HM l 1HS2
．． 1'' AI and HA2 sequentially form frequency division multiplexed signal recording tracks and audio racks at a track pitch of 58μ. Next, in the 5-way mode, the only difference from the standard mode is that the magnetic tape is made to run at a low speed such that the track pip is, for example, 19.3 μm, and the switches SW + to SW 3 in FIG. are connected to the contacts in the same way as in standard mode. A track pattern similar to that shown in FIG. 9(B) is formed on this stage. In FIG. 11(B), the third frequency υ1 multi-Φ signal is recorded on the magnetic tape 71 by forming one track box-1 by the rotary head H92, and the rotary head I-I M + Then, the next 1 to rack TL2 is formed and recorded. Here, the rotating head I
Although the width of sz is 29μ-, the track pitch is 193μm, so even if a track with a width of 29μm is formed, the width on the upstream side of the tape is 9.7μII (=29-
Since the portion 19.3) is erased by the next track 1-c2 and TL2 remains, one thousand signal recording tracks with a width of 19.3 μm and a frequency of 1,000 are sequentially formed without guard bands. Note that the track -rL+ is already formed on the surface layer of the magnetic layer on the audio track TAIO with a width of 193μ formed in the deep layer of the TII layer by the rotary head) 182, and the track TL2 is already formed by the rotary head I.
It is formed on the surface layer of the magnetic layer of the audio track T8II, J: which is formed in the deep layer of the magnetic layer by AI. Next, the reproduction system will be explained. Figure 10 is this mountain No. 1
The block 1-1 block system diagram of an example of thread is shown. ′
I) is compared to the contact a side, and the other h1 low frequency conversion curve is recorded as a rack pattern internal +1
．． % (Second re-1 mode [L'i) is switched f8 to the contact side. 1) Reproduction of a magnetic i-wave with a Y/C 1llll recording track pattern as shown in the figure.
:Explanation of operation・In this case, switch SW4
~5W61.11 is connected to the contact a, and the magnetic j-beam (runs at the same predetermined high speed as during L recording. In Fig. 10, during one field period, the rotation l\
Scan the top rv+ with "Rad" Ml and 1!1
/, : 1+11 F MrtilUjin number ka 1m-shaped coils 261 and 271, preamplifier 73! and switch SW~ to the switch 76, and during the next '1' field 11, the track 1'Y2 is scanned by the rotary head HM7, and the 'LFMt4i degree signal is supplied to the annular two' field 282 and 292. Preamplifier 73
2 is supplied to the switch 76 through the switch 76. Thereafter, in the same manner as above, the rotary heads 11M1 and 11M2
The ITM Terutei signal is re/1-crossed to field fFJ. Switch 761 or preamplifier 73 + for each field
and hifu 37 yori f7) M 'F E M Yi
B 4u ``y'' is alternately selected and outputted to the r% band filter 80. Passed through the first limiter 81 to the second limiter and F.
It is supplied to the MttJ regulator 82. Note that the n-band filter 801
You can safely omit it. The wide band angle 11 luminance signal taken out by the second limiter and the [M demodulator 82J is filtered by the low-pass filter 83. Di1inno? The cis circuit 84 and the noise generator 85 will be explained in detail later. The signal is supplied to the trix circuit 86. In addition, a second frequency division multiplier 11'' is taken out every field from the rotating head [''sl and) 1s2''.
, numbers indicate the annular coils 281 and 291, 262 and 27.
2 to preamplifiers 741 and 742,
From this point on, the output signal of the preamplifier 742 is switched to switch S.
It is supplied through W6 to a switch 77 that switches to one field per field, and here it is switched to the output v1 of the Blink 741 and to the high-pass filter 87 every field.
and low pass filter 88. FM color difference A3 of the reproduction tube 1 separated by the n-band filter 87
Sea mouth, k, first limiter 89. 2nd limiter and FM
Demodulation black 90 total, 11 cow color difference'h (No. R-Y!P:,
It is demodulated, from which the low-pass filter 91'c carrier is removed, and the preamplifier 7 and the sys circuit 5) complementary to the preamplifier 7 and the sys circuit 5)1 are removed from the low-pass filter 91'c carrier.
= l 'j'd 1 (noise Vton f! 1 in circuit 93
Noise U using the 1 correlation (reduced and supplied to the N1 to Rx circuits 86. On the other hand, the +1
i' is the second IM color difference a, and -8 is the first limiter 94.
After the level fluctuation is removed by 1 Yari 7 Shifter 9! ′
), here, if the demodulated signal and the band are
1 color, HJ, j; [demodulated to -Y. This beef color difference No. 1- is supplied to the matrix circuit 86 through the low-pass filter 9, the y'''enf? system circuit 98, and the noise canceller 99. Red (R) is produced by matrixing the color difference signals R-Y and B-Y. Each primary color signal of green (G) and blue (13) is output from the output terminal 100.
, 101 and 102, and the output terminal 10
The composite quantity IyI Buddhist symbol is output to 3. Furthermore, since the discrepancy between the luminance signal and color 7's recorded history is a discrepancy that is corrected within the vertical retrace line performance, the switching point is within this brightness. By considering
It is possible to synchronize the luminance signal and the color difference signal A1-. Next, when reproducing the magnetic tape 70 with the track pattern shown in FIG. SW+. Since SW s and SWs are switched and connected to the contact point,
The lower rotary head l-IM1 and H52 scans the track T s + + T S 2 n and returns U 1r7! 1 signal to the annular coils 261 and 27+, 26
2 and 272, pre-Imbu 731, 737, switch S
Ws. SW6.1 is supplied to the conventional reproduction circuit 104 through a switch 78 which is switched for each field. This conventional 11
The 19th circuit 1011 is supplied with the 33rd frequency division multiplexed signal consisting of the M-radiance 1α-in signal and the low-pass conversion carrier color signal,
This is a circuit that converts this into the original reproduced color video signal in one stage, which is conventionally well known, and outputs the reproduced color video (No. 3) to the output terminal 105. On the other hand, the rotating head [(^1 and HA2) Track TAI shown in FIG. 9(A) alternately to IU,
The fourth frequency division multiplexed signal reproduced from TAZ etc. is transmitted to the annular coils 301 and 31+, 302 and 312.
, Brian 7'75+. 752. Bandpass filter IQ6+- through switch 79 and switch SW4 which are switched every field. 10Gn will be supplied in large quantities. First FMlif voice signal extracted from bandpass filter 106L and bandpass filter 1
The second FM audio signal taken out from 06R is separately supplied to FM demodulation circuits 107L and 107R, and
After being demodulated, the low-pass filter/difference circuits 108t, , 108n 4j, n output terminals 109L as reproduction signals of the h channel, J,
The signal is output to the output terminal 109R as a reproduced three-channel signal of the right channel. In this way, the standard 7-d re([is t
j. Next, when reproducing the magnetic tape 71 having the track pattern shown in FIG. 9(B), the magnetic tape 71 is made to run at the same low speed as during recording, and the switch SW4゜SW is turned on as in σ12. s and SW6. are connected to the contacts respectively, so the track I'Ll is controlled by the same lower rotary heads 11M1 and H82 used in the Fi mode. Scan Tt2 etc. to intersection U and tj again! and the first signal
[1 rotary transformer, preamplifier 73I. 732, switch SW5.3Wa, and switch 78 to the conventional reproduction circuit 104, where it undergoes the above-mentioned reproduction processing and is converted back into a reproduced color video signal and output to the output terminal 105. Note that the fourth frequency division multiplexed signal is reproduced by the rotary heads HAI and HA2, separated and demodulated in the same manner as in standard mode reproduction, and output to an output terminal 109L. One go again to 109rz! h signal is taken out. <j J3, the present invention is limited to the embodiments described in F, and 1. For example, the first and second information signals recorded in the track pattern C shown in FIG. The other is a frequency division multiplex signal consisting of a signal obtained by frequency modulating two types of color difference signals and an audio signal separately. Frequency modulation to V or French Y] PCM or 4
A signal obtained by frequency division multiplexing a sound obtained by phase DPSK modulation or 4-phase PSK modulation. ■-Gutsu is a composite color video (No. 3, and the other is an audio signal. ■One is a luminance signal and the other is a frequency-modulated time axis compressed line sequential color difference signal, and a signal in which a 1l19 tone audio signal is frequency-division multiplexed, etc.). Any combination υ is 6. Also,
Rotating head I-IMI and l-4M2゜1"sl doto1
s2 may be replaced with c. Furthermore, the rack width of each rotary head is not limited to that of the embodiment, but is 4r.
Of course it is. Note that the arrangement order of the annular coils shown in FIGS.
The tracks or unused toroidal coils may be arranged between the toroidal coils in use. Also, the audio-only rotary heads IAI and HA2 may be omitted, in which case the annular heads 30+, 31+, ζ302 and 312
is the construction cost. In addition, the audio signal is a fixed Herad C record/1. The rotary head is used to record the video signal by φ.
Of course, it is okay to live. EFFECTS OF THE INVENTION As mentioned in Song 1, according to the present invention, in both the first and second recording modes, a short ring or an unused ring coil is arranged between the ring coils so that there is a short ring or an unused ring coil. By arranging the coil and the 3-1" ring, crosstalk can be prevented, and the second ["]
The rotary transformer has two ring coils used in the first recording mode and one ring coil used in the second recording mode.
Since the 62 toroidal coils are arranged differently, it is possible to create a special short ring (by using the unused 1m-shaped coil) and the short ring to create the effect of +1. -C, therefore, the rotary transformer of the second Ll can be reduced to 1 yen compared to the case where one short ring of j17 river is sunk, and the rotary transformer of Oc+ can be divided into [lower two stages (j is small, so It has many features such as til+ and easy configuration. We have received an example of one warehouse in the section - V side view and vertical sectional view, 2nd drawing number Yogi RIII
Figure 3 shows an exploded view of the C part of Kδ.
Figures 1) and 4 (△) and ()3) show an example of the arrangement of two rotating heads that are connected to the Yuki invention V2 station. Figures 1 and 5) show an example of a track pattern on a record to which the apparatus of the present invention can be applied. Figures 1 and 6 show an example of a recording apparatus to which the apparatus of the present invention can be applied. Showing ``Bu[''Tsuku genealogy diagram,
Figures 7 and 8 show six examples of track patterns, respectively.
Figure 1 shows the 1-lack pattern at the time of opening).
FIG. 0 is a block system diagram showing an example of a 1!16 beef cattle apparatus to which the apparatus of the present invention is applied. 15... Lower part fixed 19649 bodies, 18... Motor shirt I, 19... ■-ta, 20... Sufuta, 2
1... flywheel, 22]? ...first rotating core, 22S...first fixed core, 231<...second rotating core, 238...second fixed core, 24.2
5...Short ring, 26+, 27+...1st
circular coil, 26y, 27z...second circular coil, 281°29+...third circular coil, 28y
, 292... fourth annular coil, 30+, 31+...
・Fifth annular coil, 307,312...Sixth annular coil, 36°70.71...Magnetic tape, 11M
1...First rotary head, 1"s2...Second rotary head, Hs+...Third rotary head, IM2...
・Fourth rotary head, to H+, I (Ay... Rotary head for voice announcement, TVI to TY3... Luminance signal recording track, "rc+ to -rc3... Color difference (No. ii recording track. i1 figure

Claims (2)

[Claims] (1) First and second rotating heads having gaps of mutually different azimuth angles, which are mounted at opposing positions on the rotating surface of the rotating body, and mounted at opposing positions on the rotating surface of the rotating body. the first and second rotating heads, and are respectively close to the mounting positions of the first and second rotating heads in the rotational direction of the rotating body, and are respectively mounted at upper height positions in the rotational axis direction of the rotating body. The first and third rotary heads and the second and fourth rotary heads are alternately rotated every one track scanning period. 1st use
and a second recording mode in which two parallel tracks on which information signals are separately recorded are sequentially formed on the magnetic tape; A second recording mode in which tracks in which the third information signal is recorded are sequentially formed one by one on the magnetic tape by alternately using the two rotary heads for each track scanning period. A rotary transformer device for a magnetic recording and reproducing device used in a magnetic recording and reproducing device, the first and second rotary transformers being arranged at different heights in the direction of the rotational axis of the rotating body and rotating integrally with the rotating body. 2 rotating cores, and first and second fixed cores arranged separately on one side of each of the first and second rotating cores so that one side thereof is spaced apart and facing each other, and the first and second rotating cores are separated from each other. Concentric first and second annular coils are provided on each spaced-apart opposing surface of the first fixed core so as to face each other, and a first annular coil is provided between the first and second annular coils. A short ring or an unused first coil is provided respectively, and concentric third and fourth coils are provided on each of the spaced apart opposing surfaces of the second rotating core and the second stationary core so as to face each other. a ring-shaped coil, and a ring-shaped second short ring or an unused second coil is provided between the third and fourth ring-shaped coils, and the first and one end of each of the second annular coils is separately connected to the first and second rotating heads, and the third and fourth coils are provided on the second rotating core.
A rotary transformer device, characterized in that each end of the annular coil is connected separately to the third and fourth rotary heads. (2) First and second rotating heads having gaps of mutually different azimuth angles, which are mounted at opposing positions on the rotating surface of the rotating body; and mounted at opposing positions on the rotating surface of the rotating body. the first and second rotating heads, and are respectively close to the mounting positions of the first and second rotating heads in the rotational direction of the rotating body, and are respectively mounted at upper height positions in the rotational axis direction of the rotating body. third and fourth rotating heads having gaps with different azimuth angles, and fifth and sixth rotating heads having gaps with different azimuth angles attached to opposing positions on the rotating surface of the rotating body. Among the rotary heads, the first and third rotary heads and the second and fourth rotary heads are used alternately for each track scanning period to separately record the first and second information signals. A first recording mode in which two parallel tracks are sequentially formed on a magnetic tape, and the first and fifth rotary heads and the second and sixth rotary heads are operated every one track scanning period. a second recording mode in which tracks on which the third and fourth information signals are recorded are formed separately and sequentially on the magnetic tape in the surface layer portion and the deep layer portion of the magnetic layer of the magnetic tape; A rotary transformer device for a magnetic recording and reproducing device used in a magnetic recording and reproducing device, the first and second rotary transformers being arranged at different heights in the direction of the rotational axis of the rotating body and rotating integrally with the rotating body. 2 rotating cores, the first and second rotating cores;
comprising first and second fixed cores disposed separately on each side of the rotating core so that one side thereof faces apart from each other, and each of the separated opposing faces of the first rotating core and the first fixed core First and second annular coils are provided concentrically opposite each other, and an annular short ring or an unused coil is provided between the first and second annular coils, respectively, and the second annular coil is provided with an annular short ring or an unused coil. The rotating core and the second stationary core each have third and fourth annular coils concentrically arranged opposite to each other, and a fifth coil on the outermost or innermost circumference, and a fifth coil on the outermost or innermost circumference. A sixth annular coil is provided between the third and fourth annular coils, and the first and second annular coils are provided in the first rotating core.
One end of each of the annular coils is connected separately to the first and second rotating heads, and one end of each of the third and fourth annular coils provided on the second rotating core is connected to the third and fourth annular coils. A rotary transformer configured to be separately connected to a fourth rotating head, and one end of each of the fifth and sixth annular coils to be separately connected to the fifth and sixth rotating heads. Device.