JPS62184652A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain the special reproduction such as 1/N speed and N-multiple speed by providing a buffer means giving a buffer action to a tape recording medium in the lengthwise direction between two head drums so that the tape recording medium is fed intermittently to the two head drums independently respectively. CONSTITUTION:A capstan 29 and a pinch roller 30 are provided corresponding to head drums 15, 16 and a tape slack is provided by a tension lever 93 between a couple of the head drums 15, 16. Thus, a tape is fed intermittently respectively and independently to the two head drums 15, 16, a trick play by the special reproduction is attained so as to set the 1/N and N-multiple speed freely and a complicated trick play is attained by the changeover of the running direction of the magnetic tape 10. As to each picture, it is reproduced by still reproduction and the disturbance of the picture is avoided.

Description

Detailed Description of the Invention Field of Industrial Application The present invention relates to a recording/reproducing device, and in particular, the present invention relates to a recording/reproducing device, and in particular, a tape-shaped recording medium is wound around a head drum so as to coincide with the circumferential direction, and a rotating head is used to record a tape-shaped recording medium. The present invention relates to a recording/reproducing device in which a plurality of tracks are formed in the length direction of a medium.

KSummary of the Invention The present invention includes two head drums, a tape-shaped recording medium is wound around these head drums, and a buffer means for buffering the tape-shaped recording medium in the length direction is provided between the two head drums. The tape-shaped recording medium is intermittently fed to the two head drums independently by this buffer means, which enables special playback at 1/N times speed, N times speed, etc. The present invention provides a recording and reproducing apparatus using a parallel scanning method that is capable of performing the following steps.

BACKGROUND OF THE INVENTION Conventional analog recording VTRs employ a helical scanning method in which tracks are formed by winding a magnetic tape obliquely around a head drum. According to such a helical scanning method, the tape path cannot be formed on the same plane, and the tape path becomes complicated. Furthermore, since the magnetic tape hangs obliquely on the guide, there is a drawback that the guide cannot be made rotatable.

Furthermore, it is not possible to record on both the front and back sides of the magnetic tape, which reduces the recording capacity and prevents miniaturization of cassettes. Furthermore, since round-trip recording is not possible, access time is long and rewind operations are required.

"Problems to be Solved by the Invention" In order to overcome these drawbacks, for example, U.S. Pat.
No. 40109 describes a parallel scanning VTR.
is proposed. By performing recording and reproducing using this method, as well as digitizing signal processing and processing the time axis, it becomes possible to create an organic connection between the mechanical system and the signal system, and it becomes possible to create an organic connection between the mechanical system and the signal system. It becomes possible to cover problems. However, even if such a parallel scanning method is simply adopted, it is not possible to provide a recording/reproducing apparatus that can immediately carry out special scanning.

That is, with conventional devices of this type, trick plays by special reproduction such as 1/N times speed or N times speed cannot be performed.

The present invention has been made in view of these problems, and is a recording/playback device that enables special playback such as 1/N times speed or N times speed in a parallel scanning method, thereby enabling trick plays. The purpose is to provide the following.

Means for Solving Problem K] The present invention involves winding a tape-shaped recording medium so as to coincide with the circumferential direction of a head drum, and also winding a plurality of tape-shaped recording media in the length direction of the tape-shaped recording medium by a rotating head. In the apparatus for forming tracks, two head drums are provided, the tape-shaped recording medium is wound around these head drums, and Pi 1ffi means for buffering the tape-shaped recording medium in the length direction is provided. The buffer means is provided between the two head drums, and the tape-shaped recording medium is intermittently fed to the two head drums independently.

K Effect: Therefore, according to the present invention, the tape-shaped recording medium can be intermittently fed to the two head drums independently by the buffer means. Therefore, by feeding the tape-shaped recording medium alternately and intermittently to the two head drums, and by intermittently performing reproduction by the head during the period when the tape-shaped recording medium is not being fed, the 1/N It becomes possible to easily perform double-speed or N-times special playback, thereby making it possible to provide a recording and reproducing apparatus capable of trick play.

r Example] The present invention will be explained below with reference to illustrated embodiments.

FIG. 1 shows a parallel scanning type VTR according to an embodiment of the present invention, and this VTR uses a tape cassette 11 in which a magnetic tape 10 is wound and stored. The magnetic tape 10 is wound around a supply reel 12 and a take-up reel 13, with both ends fixedly attached to these reels 12 and 13, respectively. Then, the magnetic tape 10 is pulled out from the casing of the tape cassette 11, and the head drum 15
．． It is designed to be mounted on 16. In order to make this mounting possible, tape guides 17 to 21 are used.

In order to remove slack in the magnetic tape 10 mounted on the pair of head drums 15 and 16, coil springs 23.
Tension lever 25 being pulled by 24.
26 are used, and these levers 2
5. Tape guide 27 supported at the tip of 26.
28 prevents the magnetic tape 10 from becoming loose. Furthermore, the magnetic tape 10 is pressed by a pinch roller 30 against a capstan 29 that rotates at a constant speed.

Although the device in FIG. 1 is provided with two head drums 15, 16, it is also possible to have one drum. That is, as shown in FIG. 2, it is also possible to perform recording and reproduction using only the head drum 16. In this case, the head drum 15 and tape guide 17 may be omitted. When using two drums 15.16,
Recording and reproduction can be performed on the front and back sides of the magnetic tape 10, but in the case of one drum, recording and reproduction are performed only on the front side of the magnetic tape 10.

Further, when performing trick plays, a device as shown in FIG. 3 is used. In this device, two pairs of capstans 29 and pinch rollers 30 are provided between a pair of head drums 15 and 16, and the combination of each capstan 29 and pinch roller 30 is
A tape running system is constructed corresponding to each head drum 15, 16. Furthermore, a buffer means for buffering the magnetic tape 10 in the length direction is provided between the pair of tape running systems.

This buffering means includes a tension lever 93 and a tension lever 93.
3, and a tension coil spring 9 that biases the tension lever 93 to rotate.
It consists of 5.

By rotating the tension lever 93, the length of the magnetic tape 10 between the magnetic heads 15.16 is adjusted, and the length of the magnetic tape 10 between the magnetic heads 15.16 is adjusted.
When the magnetic tape 10 is intermittently driven by the capstan 29 and the pinch roller 30, the other drum 16 and 15 are not affected.

With such a configuration, it is possible to perform 1/N times speed or N times speed, thereby making it possible to perform trick plays.

Next, the structure of the head drums 15 and 16 will be explained. As shown in FIG. The drum 16 is fixed to a rotating shaft 33. This rotating shaft 33 also serves as the output shaft of the motor 34, and is rotatably supported by a bearing attached to the casing 35. The stator coil 3 is inside the casing 35.
6 is disposed, and a rotor core 37 is disposed on the rotating shaft 33.
is fixed to the rotating shaft 3.
3, the head drum 16 is rotationally driven.

A coil 38 constituting a beam near motor is disposed within the head drum 16 and is wound around a stator core 39 . A movable element 40 is disposed movably with respect to the stator core 39, and is adapted to perform linear motion. The movable element 40 supports four magnetic heads 41 to 44 in one row vertically. That is, the four heads 41 to 44 are arranged in the axial direction of the head drum 16 and can be moved in the axial direction by the linear motor 38. The two upper magnetic heads 41 and 42 are joined to form an azimuth spare head, and similarly the two lower heads 43 and 44 form an azimuth bare head.

Inside this head drum 16 are a pair of upper and lower circuit boards 45.
．． 46 are arranged. The upper circuit board 45 is connected to the magnetic heads 41 to 44 and forms a conversion circuit for parallel signals and serial signals. On the other hand, the lower circuit board 46 is connected to the linear motor 3.
8 drive circuits are formed.

Further, an optical coupling 47 made of a light guide is provided at the center of the rotating shaft 33, and is adapted to transmit video signals. Prisms 48 and 49 are arranged above and below this coupling 47, respectively, and a light emitting element 50 is arranged so as to face the prism 48.
and a light receiving element 51 are provided. Similarly prism 4
9, a light emitting element 52 and a light receiving element 53 are also provided in close proximity thereto. and these elements 52.5
3 are connected to amplifiers 54 and 55, respectively. Further, a slip ring 56 is provided at the lower end of the rotary shaft 33 for driving the circuits on the circuit boards 45 and 46 or for supplying electric power for driving the linear motor 38. It is designed to supply power inside.

For convenience, the circuit inside the head drum 16 is shown in block form as shown in FIG. That is, the light receiving element 51 is connected to a serial-to-parallel converter 60 via a recording optical modulator 59, and the output of this converter 60 is transmitted to four amplifiers 61.
It is connected to the four heads 41 to 44 via the corresponding field switch 62. Furthermore, four heads 41 to 44 are connected to a field switch 42.
are respectively connected to a reproduction amplifier 63 through fixed contacts on the reproduction side, and the output of the amplifier 63 is converted into a serial signal by a parallel-to-serial converter 64. This converter 64 is connected to the light emitting element 50 through an optical modulator 65. Further, a controller 6G for controlling the switch 62, the serial-to-parallel converter 60, the parallel-to-serial converter 64, and the head motor 38 is provided.

Next, FIG. 7 shows the recording circuit of this VTR in more detail. A video signal input terminal 67 is connected to a serial-to-parallel converter 60 via a low-pass filter 38 and an A/D converter 69. The output side of this serial-parallel converter 60 is connected to each head 41 to 44.
is connected to the error correction circuit 70 corresponding to the
Each error correction circuit 70 has a corresponding pair of memories 71.7.
Furthermore, the output sides of the memories 71 and 72 are connected to a modulator 75 via a changeover switch 74. The output of this modulator 75 is supplied to the heads 41 to 44 through an equalizer 76 and an amplifier 61, respectively.

A clock generator 89 is provided for supplying clock signals to the memories 71 and 72, and a selector 90 is provided for selecting one of a plurality of clocks having different frequencies generated by the clock generator 89. The clock signal selected by the selector 90 is used to write or read data into or from the memories 71 and 72.

Next, the reproduction circuit is as shown in FIG. It is connected to paired memories 81 and 82. A changeover switch 83 for switching between the pair of memories 81 and 82 is provided, and a changeover switch 84 for controlling readout from the memories 81 and 82 allows the pair of memories 81 and 82 to be switched to parallel serial mode. It is connected to a converter 64. The output of this converter 64 is connected to a video signal output terminal 87 through a D/A converter 85 and a low-pass filter 86, so that the reproduced video signal can be extracted from this terminal 87. There is. This reproducing circuit is also provided with a clock generator 89 and a selector 90 for time axis correction of writing and reading of the memories 81 and 82.

These are used in common with the recording circuit.

Next, the operation of the parallel scanning VTR configured as described above will be explained. As shown in FIG. 1, the magnetic tape 10 in the tape cassette 11 is pulled out and mounted on a pair of head drums 15 and 16. In this case, the 1-ki tape 10 is wound not helically but straightly, that is, so as to coincide with the circumferential direction of the head drum 15, 16. Then, the head in the drum 16 scans the front surface of the magnetic tape 10, and the head in the drum 15 scans the back surface of the magnetic tape 10. As shown in FIG. 4, heads 41 to 44 are connected to drum 1.
They are arranged in a direction parallel to the rotation axis 33 of 6, and the entire body is mounted on the same carriage 40, so that they are moved in the direction of the rotation axis for each scan, as shown in FIG. .

The magnetic heads 41 to 44 are moved in the axial direction in a section in which the magnetic tape 10 is not opposed to the heads 41 to 44 within the drum 15.16, that is, within a rotation angle of about 90° of the head drum 15.16. Drum 15.16 is 1
/60 seconds, or 16.6 mm 5 ec, so the time it takes for the drum 15.16 to rotate 90" is 4.15 mm 5 ec. On the other hand, the movement of the heads 41 to 44 takes about 2 Im sec. Since this is completed, the heads 41 to 44 can move with sufficient margin.

In the track pattern shown in FIG. 9, the lower two heads 43 and 44 constituting the azimuth spare head first form tracks No. and 1, and then intermittently
By moving upward in the axial direction of No. 6, tracks No. 2, No. 013, No. 4 are formed as shown by solid lines in the following group. After forming the No. 4 track, the heads 43 and 44 move downward in the axial direction, thereby forming the No. 5 track shown by the dotted line.
, No. 6, and No. 67 are sequentially formed. Between the tracks shown by solid lines formed when the magnetic head 43.44 moves upward or forward, track patterns No. 5 to No. 087 shown by dotted lines are formed when the head 43.44 moves downward. is starting to form. Note that the upper heads 41 and 42 also form similar tracks.

As is clear from FIGS. 4 and 9, the upper pair of heads 41.42 and the lower pair of heads 43.44
Since each of the tracks is composed of an azimuth pair head, the track pattern shown by a solid line or a dotted line in FIG. 9 is actually composed of two tracks formed close to each other and parallel to each other. By forming such a track pattern, it becomes possible to perform high-density recording on the magnetic tape 10.

At this time, the feeding of the magnetic tape 10 and the head 41~
The relationship between the axial movements of the tape 44 is shown in FIG. 11, and the tape 10 is configured to run continuously at a constant speed. On the other hand, the heads 41 to 44 have head drums 15 and 16 that are not in contact with the magnetic tape 10 as described above.
The drum 15 is intermittently rotated in an interval of approximately 90° at a rotation angle of
．． 16 in the axial direction.

Note that when the magnetic tape 10 is intermittently fed, the magnetic tape 1o is moved as shown in FIG.
When it is in contact with the heads 41 to 44, it is kept stationary, and it moves intermittently during periods when it is not in contact with the heads 41 to 44. Also, as shown in FIG. 1, two drums 15.
16, as shown in FIG. 13, signals are recorded or reproduced alternately by the two drums 15 and 16, and the heads 41 to 44 are moved in a step-like manner during a period when no signal is recorded or reproduced. It is also possible to perform movement.

Next, the trick play operation will be explained. This trick play operation is performed by the apparatus shown in FIG. In this device, as described above, a capstan 29 and a pinch roller 30 are provided corresponding to each of the head drums 15 and 16, and a tension lever 93 is used to connect the pair of head drums 15 and 15.
．． A tape reservoir is provided between 16 and 16. Therefore, the magnetic tape 10 is fed to the head drums 15, 16 independently and intermittently, allowing trick play.

For example, when switching from normal playback to slow motion at 1/2 speed, this is done as shown in FIG. For normal playback, two head drums 1
5.16, the magnetic tape 10 is alternately reproduced, and the magnetic tape 10 is intermittently fed during the period in which reproduction is not performed.

Then, from a certain period, repeat the same field signal twice.
Slow motion at 1/2 speed is achieved by alternately reproducing data with the two head drums 15, 16 and alternately feeding the magnetic tape 10 intermittently while the head drums 15, 16 are idle.

Next, when playing at N times speed, for example, 2 times speed,
This is done as shown in FIG. That is, after two consecutive field signals are reproduced by the two head drums 15 and 16, the next two field signals are skipped and the next two field signals are reproduced. Furthermore, by reversing the running direction of the magnetic tape 10 midway, it is possible to directly switch from double speed in the forward direction to double speed in the reverse direction. Even in this case, no image disturbance occurs at all.

Therefore, according to such a system, a tape running system consisting of a capstan 29 and a pinch roller 30 is provided for each of the two head drums 15, 16, and a buffer means consisting of a tension lever 93 is provided between these two running systems. By providing two head drums 1
5.16, it becomes possible to feed the tape independently and intermittently, and trick play by special play becomes possible. That is, it is possible to freely set the 1/Nfg speed or the N times speed, and by roughly switching the running direction of the magnetic tape 10, complex trick plays are possible. Moreover, since this kind of trick play is achieved by intermittent feeding of the magnetic tape 10,
This will be achieved by still reproduction for each individual image, and the image will not be distorted. Because the changes are made using still images, the tricks can be changed crisply.

Next, in this type of VTR, when performing reciprocating recording, it is possible to form the 1 to 1 easy patterns either on one side of the magnetic tape 10 or on both sides of the magnetic tape 10. The single-sided system has the advantage that it can be used with a single drum 16 as shown in FIG. 2, and the mechanism is simple.

Furthermore, it becomes possible to use a single-sided coated magnetic tape 10. On the other hand, the feature of the double-sided system is that the area of the track formed by one head is large, and the area of the track formed by one head is large.
This makes it possible to reduce the speed of the process and also makes it easier to control. Also, it is possible to record for a longer time than when using a single drum.

FIG. 10 shows a track pattern for reciprocating recording by this VTR, in which half areas are provided in the width direction of the magnetic tape 100 to form forward tracks and reverse tracks. In FIG. 10, the first or last portions of the tracks indicated by solid lines or dotted lines are made to coincide with each other in the longitudinal direction of the tape 10 in the forward and reverse directions. Therefore, when the direction of the magnetic tape 10 is changed in the middle of the magnetic tape 10 in the case of reciprocating recording, it is possible to eliminate image disturbance by performing the change at a coincident position at the beginning or end of the track.

Furthermore, in the case of reciprocating recording, in FIG. 10, the first track No. 5 is formed in the reverse direction after the last track No. 4 formed in the forward direction. Moreover, here, the last track No. 4 in the forward direction and the first track No. 5 in the reverse direction are formed at the same position in the length direction of the magnetic tape 10. With this configuration, time is provided for changing the running direction of the magnetic tape 10, or servo control of the capstan 29 is facilitated. Therefore, by forming such a track pattern, it is possible to eliminate signal disturbance when the direction of the tape 10 is changed.

Next, considering the relationship between the running direction or running speed of the magnetic tape 10 and the rotational direction of the head drum 16,
When the running direction of the magnetic tape 10 and the rotating direction of the head drum 16 are the same, track formation is started at the position shown in FIG. 16. The magnetic head 41 then rotates about 270 degrees and finishes forming the track at the position shown in FIG. In this case, the magnetic tape 10 is
6, and when forming a track with a length of 3/4 of the circumference πD of the head drum 16, the angle corresponding to φ is smaller than 270°. This will result in extra recording.

Next, when the running direction of the magnetic tape 10 and the rotating direction of the head drum 16 are opposite, track formation is started at the position shown in FIG. 18, and recording is ended at the position shown in FIG. 19. When the running direction of the magnetic tape 10 and the rotating direction of the head drum 16 are opposite, the head drum 16
Since the magnetic tape 10 moves in the opposite direction by an angle corresponding to φ during the 3/4 rotation of A track having a length of 3/4 of the circumference πD of the drum 16 is formed.

Next, in the case of still recording, that is, when the magnetic tape 10 is not running, or when the magnetic tape 10 is stationary in the case of intermittent feeding and is in contact with the head 41, the position shown in FIG. Recording is started at the position shown in FIG. 21, which is rotated by 270°, and ends at the position shown in FIG. This reduces the circumference length πD of the head drum 16 to 3. A track with a length of /4 will be formed.

By adjusting the position at which recording ends in accordance with the running direction or running speed of the magnetic tape 10 in this way, it is possible to form tracks of the same length in any case. Note that in the case of forward feeding of the magnetic tape 10 at N times the speed, φ may be replaced with Nφ. This value then regulates the wrap angle θ of the magnetic tape 10. In addition, when the magnetic tape 10 is fed in the reverse direction at N times the speed, 270°-Nφ is the wrap angle θ.
become.

Next, considering the relationship between the correction angle φ and the length of the track, as shown in FIG. 9, if the length of the track is t and the step length of the track is S, then S = t /n. Note that n here is the number of tracks formed by one magnetic head in one cycle, and in the case of FIG. 9, n=7. Next, the track length [is [-(πD-3)·θ/360]. If s=v/60, then φ=360s/πD. Note that ■ and D represent the running speed of the magnetic tape 10 and the diameters of the head drums 15 and 16.

A video signal for forming a track as shown in FIG. 9 is transferred to the drum 16 through an optical power pulling 47 shown in FIGS. 4 and 6. The conversion circuit formed on the circuit board 45 converts the signal into a parallel signal, and this signal is sent to the four heads 41 to 41 driven by the linear motor 38.
It is distributed and supplied to 44 stations. The optical power puller 47 is also adapted to transfer control signals for the linear motor 38, which signals are separated by circuitry on the circuit board 46 and adapted to drive the linear step motor 38. The head 41 mounted on the head carrier 40 is driven by the step motor 38.
44 in the axial direction of the drum 16. Note that power for supplying power to the circuit boards 45 and 46 and for driving the linear motor 38 is supplied from the fixed side to the rotating side through the slip ring 56.

To explain in more detail the operation of the conversion circuit on the circuit board 45, in the recording circuit shown in FIG. On the other hand, it is written into the memory 71, for example. At the same time, the previously written contents of the memory 72 are taken out in a compressed state and applied to the heads 41-44 through the modulator 75 and equalizer 76. Therefore, in this case, standard clock signals are selected by the selector 90 and sent to the memory 71 from eight clock generators. On the other hand, a clock signal with a high frequency is selected and supplied to the memory 72. The frequency at this time is determined by the speed of the magnetic tape 10 and the running direction with respect to the head drum 16, so that an i-rack of a constant length is always formed regardless of the correction angle φ. .

Next, in the reproducing circuit, as shown in FIG. The data is written to one of the memory 81, for example. The clock signal that determines the writing timing at this time is selected by the selector 90, thereby making it possible to write data into the memory 81 within a predetermined time. In contrast, the other memory 8
The readout of signals from memory 8 is done in real time, and standard clock pulses are read out from memory 8.
2.

In the VTR according to this embodiment, the magnetic tape 10 can be wound so as to coincide with the circumferential direction of the head drum 15, 16, and the tape bus can be realized on the same plane, so that the tape running The system is simplified and all tape guides can be made rotary. In general, since digital signals are recorded, even if the bit rate of recording and reproduction changes, the image is not affected, and it is possible to completely handle forward, reverse, and still images. In addition, serial transfer can be used to transmit signals to the head drums 15 and 16, and this signal can be transmitted to the magnetic head 4.
It becomes possible to also superimpose drive signals for movements 1 to 44.

Further, such a VTR can be applied to both the double drum system shown in FIG. 1 and the single drum system shown in FIG. 2, and has compatibility. Further, by using a multi-head drum, it becomes easy to realize double-sided recording on the magnetic tape 10, which is advantageous in making it into a cassette, and it is also convenient in terms of access. Furthermore, since the magnetic tape 10 can be run in both forward and reverse directions, trick play is also possible. This also shortens the access time. Furthermore, by matching the first part and the last part of the track pattern in the case of reciprocating recording, it is possible to completely eliminate image disturbances during forward/reverse switching.

Furthermore, the VTR according to this embodiment has magnetic heads 41.42.
and 43 and 44 are respectively composed of azimuth spare heads, and these heads 41 to 44 are connected to the drum 15.
．． Between the tracks when moving forward in the axial direction of 16,
It is designed to form a track when making a backward movement. Therefore, it becomes possible to record signals at high density by effectively utilizing the surface of the magnetic tape 10, thereby making it possible to record for a long time and also to achieve miniaturization of the tape cassette 11. Become.

[Effects of the invention I] As shown in E to E, the present invention provides two Herado trams,
A tape-shaped recording medium is wound around these head drums, and a buffering means for buffering the tape-shaped recording medium in the length direction is provided between the two herad trams, and this buffering means allows the tape-shaped recording medium to be wrapped between the two head drums. The data is sent intermittently and independently to each other.

Therefore, with such a configuration, it becomes possible to easily achieve trick play by special reproduction such as 1/N times speed or N times speed, and moreover, the signal is not disturbed.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts of a VTR according to an embodiment of the present invention, FIG. 2 is a plan view of essential parts in the case of one drum, FIG. 3 is a plan view of essential parts of a device for intermittent feeding, and FIG. The figure shows the l of the head drum.
FIG. 5 is a cross-sectional view of the same, FIG. 6 is a block diagram of the conversion circuit, FIG. 7 is a block diagram showing the configuration of the recording circuit, and FIG. 8 is a block diagram showing the configuration of the reproduction circuit. , FIG. 9 is a plan view showing the track pattern formed on the magnetic tape, FIG. 10 is a plan view showing the track pattern in the case of reciprocating recording, and FIG. 11 is a plan view showing the operation in the case of continuous feeding of the tape. 12 is a graph showing the operation in the case of intermittent feeding of the tape, and FIG. 13 is a graph showing the operation in the case of intermittent feeding of the tape by two drums,
Fig. 14 is a graph showing the operation of switching from normal playback to 1/2 speed, Fig. 15 is a graph showing the operation of double speed in the forward and reverse directions, and Figs. 16 to 21 are graphs showing the movement of the magnetic tape. FIG. 6 is a plan view of a main part showing the same operation of correcting the recording time based on the difference in direction and traveling speed. In the symbols used in the drawings, 10...Magnetic tape 15.16...Head drum 29...Capstan 30...Pinch rollers 41 to 44...Magnetic head 93...Tension lever 94. ...Tape guide 95...This is a tension coil spring.

Claims (1)

[Claims] In an apparatus in which a tape-shaped recording medium is wound so as to coincide with the circumferential direction of a head drum, and a plurality of tracks are formed in the length direction of the tape-shaped recording medium by a rotating head, two A head drum is installed,
The tape-shaped recording medium is wound around these head drums, and a buffer means for buffering the tape-shaped recording medium in the length direction is provided between the two head drums. A recording/reproducing device characterized in that data is sent to two head drums independently and intermittently.