JP2000251349A - Electrostatic braking mechanism, electrostatic electrode for tape-like recording medium, and reproducing device and reproducing method of tape-like recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain stable and highly reliable electrostatic braking mechanism and electrostatic electrode for a tape-like recording medium, a reproducing device of the tape-like recording medium and the reproducing method, by preventing the tape-like recording medium from damaging, rolling in a rotary member, etc., and further falling off, in the still reproduction. SOLUTION: The running state of the running tape-like recording medium 23 which is wound on a rotary drum 24 having heads 25 while the tension is added, is stopped and the tape-like recording medium 23 is electrostatically attracted and fixed by the electrostatic braking mechanism EC arranged at the upstream side from the rotary drum 24, and after the tape-like recording medium 23 is inversely fed to the direction W in some amount by the reverse rotation of a capstan 27 positioned at the downstream side from the rotary drum 24, the tape-like recording medium 23 is fixed and held at the position of the capstan 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic braking mechanism and an electrostatic electrode for a tape-shaped recording medium, and a reproducing apparatus and a reproducing method for a tape-shaped recording medium.

[0002]

2. Description of the Related Art As a video recording / reproducing device, a VCR device (video cassette recorder) for recording and reproducing a video signal on a tape-shaped magnetic recording medium is widely used. In this VCR device, when the information signal is reproduced from a tape-shaped recording medium on which the information signal is recorded, the VCR device is out of a normal reproduction (PB) mode for performing normal moving image reproduction and a jog (JOG) mode for fast-forward reproduction. In addition, a special reproduction such as a still (STILL) reproduction mode for reproducing a still image is possible.

FIG. 10 shows a conventional U-loading type V.
FIG. 3 is a diagram illustrating a running path of a tape-shaped recording medium in a CR device, that is, a state of a tape path. In the following description, the tape-shaped recording medium may be abbreviated as a tape.

As shown in FIG. 1, a video cassette 20 having a supply (supply) reel 21 and a take-up (take-up) reel 22 and a tape-shaped recording medium 23 stored therein.
Is mounted on the VCR device, the tape-shaped recording medium 23 pulled out from the video cassette 20 is loaded and wound around the rotating drum 24.

In the normal play mode or the jog mode, the rotating capstan 27 and the pinch roller 2
8 rotates with the tape-shaped recording medium 23 interposed therebetween, thereby reliably moving the tape-shaped recording medium 23 in the direction of the arrow in the figure. on the other hand,
By the rotation of the rotary drum 24, the tape-shaped recording medium 2 is
3 is swept in order, and the video signal is reproduced.

In this case, a plurality of guide pins 26
Thus, the tape path of the tape-shaped recording medium 23 is regulated.

Further, a rotating pin 29 attached to a tension arm (not shown) applies a certain tension to the running tape-shaped recording medium 23. The inclined pin 30 adjusts the height of the tape-shaped recording medium 23 between the position of the head 25 and the winding position of the take-up reel 22.

On the other hand, in the still reproduction mode in which a still image is reproduced as special reproduction, the rotation of the capstan 27 is stopped, or the capstan 27 is separated from the pinch roller 28 to stop the sandwiching of the tape-shaped recording medium 23. The running of the tape-shaped recording medium 23 is stopped, and the same image is reproduced as a still image based on the signal temporarily stored in the field memory or the frame memory.

For example, in a digital system conforming to the VTR standard, a signal of 10 tracks or 12 tracks is stored in a frame memory as a signal of one frame. During this still playback mode, the rotating drum 2
4 is configured to continue the constant rotation, but in order to mainly avoid damage to the tape-shaped recording medium 23 due to repeated contact of the outer periphery of the head 25 and the rotating drum 24 with the same part on the tape-shaped recording medium 23, The configuration is such that the tension applied to the tape-shaped recording medium 23 is reduced.

The tension applied to the tape-shaped recording medium 23 in the still playback mode is
The value is set so that the tape-shaped recording medium 23 is prevented from coming off, the fluttering of the tape-shaped recording medium 23 is suppressed, and the tape-shaped recording medium 23 is not sent out by the airflow formed on the outer periphery by the rotation of the rotary drum 24. For example, it is 5 gr in a configuration conforming to the DV standard.

[0011]

By the way, a VTR device is often operated in a long-time still state at a cue portion at the time of editing. Also, when a commercial VTR device sends out a commercial, cueing is always performed at the same frame address. As described above, in the case of a tape for editing material, the same image is often reproduced repeatedly, and the still time is also long.

As described above, since the tension applied to the tape-shaped recording medium 23 in the still reproduction mode is reduced, most of the tape-shaped recording medium 23
4, but requires a minimum tension for the above-described reason.
At least a part of 3 keeps in contact with the rotating drum 24 rotating continuously at a low tension even during the still reproduction mode.

For this reason, there has been a problem that if the still time is prolonged, the tape may be damaged more by the contact. The durable time of a still based on the degree of tape damage mainly depends on the tape thickness and the number of heads applied. In a tape having a tape thickness of about 10 to 16 μm used in a conventional editing machine, a durable time of still is secured for several hours. However, the tape thickness is reduced due to a demand for a smaller tape cassette and a longer recording / reproducing time. As the still life of the still becomes shorter.

In a VTR apparatus for general use, the durable time of a still is about one hour, and the tape thickness is further reduced in accordance with the DV standard of about 7 to 8 μm. In particular, in a multi-head editing machine, the still durability time is further reduced.

In order to cope with such a reduction in the still life, the editing machine is provided with a still-off timer and a function for forcibly stopping the still reproduction within a predetermined number of minutes. Durability is given tension,
In addition to temperature, humidity, number of heads, head protrusion height, etc.,
There is a problem that even if a fixed still playback time is applied, it cannot be guaranteed reliably because it depends on uncertain factors such as variations in the production lot of the tape.

Furthermore, since the editing machine is controlled by the editor, even if the VTR apparatus sends a still playback off signal to the mechanism, if the still playback command is transmitted from the editor, this command has priority. As a result, a problem that still reproduction continues for a long time occurs.

By the way, the result of the influence of the tape during the still reproduction is as follows. 1. Track shift due to tape deformation 2. 2. Tape vibration due to tape surface damage 3. The tape edge is bent or bent due to vibration. Separation of magnetic surface

If the tension is increased to eliminate the above-mentioned track deviation, the magnetic surface will be scratched or peeled off, thereby deteriorating the durability time. Furthermore, if tape vibration or edge breakage or bending occurs, the influence occurs even in steady running, and a problem occurs in that the lock phase of the rotating drum changes.

Further, although a proposal has been made to change the still position in a short time, there is a problem that the still address greatly changes due to restrictions on capstan rotation. Proposals to move the tape to a position where stress is not applied also require time (1 second or more for M-type loading, U
It takes 4-5 seconds for mold loading). Further, in this configuration, there is a problem that a tape stress is newly generated by winding the tape around drums having different heights.

In addition to the above, when the tension arm is moved and the rotating pin 29 is moved to lower the tension, the tension is sometimes loosened even though the minimum tension is maintained as described above. Tape-shaped recording medium 23
There is a case where a new problem arises in that

Therefore, the present invention prevents the tape-shaped recording medium from being damaged during still reproduction, prevents the tape-shaped recording medium from being entangled in a rotating member or the like, and prevents the tape-shaped recording medium from falling off. It is an object of the present invention to provide a highly reliable electrostatic braking mechanism and an electrostatic electrode for a tape-shaped recording medium, and a reproducing apparatus and a reproducing method for a tape-shaped recording medium.

[0022]

In order to achieve the above object, an electrostatic braking mechanism for a tape-shaped recording medium according to the present invention comprises:
An information signal is recorded on a magnetic recording layer provided on one side of the tape-shaped insulating layer, and tension control means for applying a predetermined tension to a tape-shaped recording medium capable of traveling in a predetermined traveling direction; An insulating base having a predetermined dielectric constant, which is disposed downstream of the predetermined traveling direction and has a built-in read head, and is disposed at a position between the rotating drum that winds and rotates the tape-shaped recording medium; An electrode provided on the insulating base and receiving a voltage, an insulating coating layer for coating the electrode, and a voltage applying unit for applying a voltage to the electrode, wherein the electrode forms the coating layer. The tape-shaped recording medium is disposed at a position where the tape-shaped recording medium can come into contact with the insulating layer.

According to the above configuration, since the electrode supplied with the voltage by the voltage applying means is provided on the insulating base, which is an insulator, static electricity is generated on the electrode, and the electrode is supplied by the insulating base. By being insulated, static electricity is generated stably while voltage supply continues. The tape-shaped recording medium is attracted by the static electricity.

In the electrostatic electrode according to the present invention, a tape-shaped recording medium on which an information signal is recorded on a magnetic recording layer provided on one side of a tape-shaped insulating layer is loaded and travels on a predetermined traveling path. An electrostatic electrode provided in a device for reproducing the information signal from a tape-shaped recording medium, wherein the insulator is disposed in the middle of the traveling path of the tape-shaped recording medium, and has an insulator having a predetermined dielectric constant; An electrode that generates static electricity that is held on and attracts and holds the insulating layer of the tape-shaped recording medium when a voltage is applied thereto, and an insulating coating layer that covers the electrode. It is characterized by comprising.

According to the above configuration, since the electrostatic electrode is provided on the insulating base which is an insulator, static electricity is generated when a voltage is supplied to the electrostatic electrode. In addition, static electricity is generated stably while voltage supply is continued by being insulated by the insulating base. The tape-shaped recording medium is attracted by the electrostatically charged electrostatic electrodes.

[0026] The reproducing apparatus for a tape-shaped recording medium according to the present invention comprises a tape-shaped recording medium on which information signals are recorded on a magnetic recording layer provided on one side of a tape-shaped insulating layer and which can run in a predetermined direction. And a tension control mechanism disposed upstream from the rotary drum in the predetermined direction applies a predetermined tension to the tape-shaped recording medium, and is provided downstream from the rotary drum in the predetermined direction. The tape-shaped recording medium is sent out in the predetermined direction by the rotation of the capstan located on the side, and the tape-shaped recording medium is caused to travel, and is a downstream side from the tension control mechanism and an upstream side from the rotating drum. An insulating substrate having a predetermined dielectric constant, an electrode provided on the insulating substrate and receiving a voltage, an insulating coating layer covering the electrode, A voltage applying means for applying a pressure, and an electrostatic braking mechanism for generating static electricity on the electrodes by applying the voltage is disposed so as to be in contact with the insulating layer of the tape-shaped recording medium; When stopping the running of the tape-shaped recording medium while rotating the drum, the capstan stops rotating and clamps the tape-shaped recording medium, and the tension control mechanism reduces the tension and reduces the static pressure. The electric braking mechanism is characterized in that the tape-shaped recording medium in contact therewith is sucked by static electricity and braked.

According to the above arrangement, the travel of the tape-shaped recording medium is stopped by the capstan downstream from the rotary drum, and the tension is reduced by the tension control mechanism upstream from the rotary drum. On the other hand, since the rotating drum is rotating, an air layer is formed between the rotating drum and the tape-shaped recording medium whose traveling is stopped and the tension is reduced, and the tape-shaped recording medium under a low tension is formed by the air layer. Is drawn into the rotating drum by a small amount. Next, when the tape-shaped recording medium is fixed by the electrostatic braking mechanism at a position between the rotating drum and the tension control mechanism, the tape-shaped recording medium increased by a small amount around the rotating drum is rotated by the air layer formed. Separated from

The tape-type recording medium reproducing apparatus according to the present invention comprises a tape-type recording medium in which an information signal is recorded on a magnetic recording layer provided on one side of a tape-like insulating layer and which can run in a predetermined direction. And a tension control mechanism disposed upstream from the rotary drum in the predetermined direction applies a predetermined tension to the tape-shaped recording medium, and is provided downstream from the rotary drum in the predetermined direction. The tape-shaped recording medium is sent out in the predetermined direction by the rotation of the capstan located on the side, and the tape-shaped recording medium is caused to travel, and is a downstream side from the tension control mechanism and an upstream side from the rotating drum. An insulating substrate having a predetermined dielectric constant, an electrode provided on the insulating substrate and receiving a voltage, an insulating coating layer covering the electrode, A voltage applying means for applying a pressure, and an electrostatic braking mechanism for generating static electricity on the electrodes by applying the voltage is disposed so as to be in contact with the insulating layer of the tape-shaped recording medium; When stopping the running of the tape-shaped recording medium while rotating the drum, the capstan stops rotating, the tension control mechanism relaxes the tension, and the tape-shaped recording is brought into contact with the electrostatic braking mechanism. The medium is sucked by static electricity and braked, and then the capstan is rotated in reverse by a predetermined amount to feed the tape-shaped recording medium by a predetermined amount to the rotating drum.

According to the above-described configuration, the travel of the tape-shaped recording medium is stopped by the capstan downstream from the rotary drum, and the tension is reduced by the tension control mechanism upstream from the rotary drum. Next, the tape-shaped recording medium is fixed by the electrostatic braking mechanism at a position between the rotating drum and the tension control mechanism, and then, by the reverse rotation of the capstan, an appropriate amount of tape is supplied to the periphery of the rotating drum. An air layer is formed between the tape-shaped recording media, and the tape-shaped recording medium is separated from the rotating drum.

According to the method of reproducing a tape-shaped recording medium according to the present invention, an information signal is recorded on a magnetic recording layer provided on an insulating layer and a predetermined tension is applied to the tape-shaped recording medium traveling in a predetermined direction. Next, the magnetic recording layer is brought into contact with the outer periphery of a rotating drum rotating with a read head to reproduce the information signal, and the tape-shaped recording medium is moved in the predetermined direction by the rotation of the capstan downstream from the rotating drum. A first control procedure for feeding the tape-shaped recording medium, and stopping the rotation of the capstan and reducing the tension applied to the tape-shaped recording medium when stopping the running of the tape-shaped recording medium during the rotation of the rotary drum. A second control procedure for causing
A voltage is applied to an electrode provided at a position between the rotating drum and the tension control mechanism, and the generated static electricity causes the insulating layer side of the tape-shaped recording medium in which the tension is reduced to be attracted and fixed. A third control procedure;
It is characterized by having.

An air layer is formed between the rotating rotating drum and the tape-shaped recording medium in which the running is stopped and the tension is reduced. According to the above-described method, the capstan downstream from the rotating drum is formed. When the running of the tape-shaped recording medium is stopped, and the tension is reduced by the tension control mechanism upstream from the rotating drum, the tape-shaped recording medium is pulled into the rotating drum by a small amount by the air layer under a low tension, Then, the tape-shaped recording medium is fixed by the electrostatic braking of the electrode at a position between the rotating drum and the tension control mechanism. It is separated from the rotating drum.

[0032] In the reproducing method of the tape-shaped recording medium according to the present invention, the tension control mechanism controls the predetermined tension on the tape-shaped recording medium which records an information signal on the magnetic recording layer provided on the insulating layer and travels in a predetermined direction. Then, the information signal is reproduced by bringing the magnetic recording layer into contact with the outer periphery of the rotating drum rotating with the read head, and the tape-shaped recording medium is rotated by rotation of the capstan downstream from the rotating drum. A first control procedure for sending the tape-shaped recording medium in the predetermined direction, and stopping the rotation of the capstan and applying the tape-shaped recording medium to the tape-shaped recording medium when stopping the running of the tape-shaped recording medium while the rotating drum is rotating. A second control procedure for relaxing tension, and applying a voltage to an electrode provided at a position between the rotary drum and the tension control mechanism,
A third control procedure for adsorbing and fixing the insulating layer side of the tape-shaped recording medium, the tension of which is reduced by the generated static electricity, and measuring the amount of reverse rotation while rotating the capstan in the reverse direction to measure the tape. And a fourth control procedure for moving the shape recording medium in the reverse direction by a predetermined amount.

Although an air layer is formed between the rotating rotating drum and the tape-shaped recording medium in which the running is stopped and the tension is reduced, according to the above method, the capstan downstream from the rotating drum is formed. After the tape-shaped recording medium stops running, the tension is reduced by the tension control mechanism upstream from the rotating drum, and the tape-shaped recording medium is fixed by the electrostatic braking of the electrodes at the position between the rotating drum and the tension control mechanism. Then, by detecting and controlling the reverse rotation amount of the capstan, an appropriate amount of tape is supplied around the rotating drum, thereby forming an air layer at a predetermined interval between the rotating drum and the tape-shaped recording medium. Then, the tape-shaped recording medium is separated from the rotating drum.

[0034]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The embodiment described below is a part of a preferred example for showing the essential configuration and operation of the present invention, and therefore, various restrictions which are preferable in the technical configuration may be given. The scope of the invention is not limited to these embodiments unless otherwise specified in the following description.

FIG. 1 is an explanatory view of the configuration of an embodiment of the electrostatic braking mechanism according to the present invention. FIG. 2 is a schematic perspective view of a main part of a VTR device incorporating the electrostatic braking mechanism shown in FIG. FIG. 3 is a perspective view of a configuration of one embodiment of the electrostatic brake shown in FIG. FIG. 4 is an explanatory diagram of a state where the electrostatic braking mechanism shown in FIG. 1 is incorporated.

As shown in FIGS. 1 and 4, the electrostatic braking mechanism EC according to the present invention comprises an electrostatic braking body 31, a voltage applying means comprising a high voltage generation control circuit 16 and a high voltage generation circuit 17, and It is comprised including.

As shown in FIGS. 3 and 4, the electrostatic braking element 31 has an insulating base 31b having a predetermined permittivity in a shape in which both edges in the vertical direction of the front surface of the rectangular parallelepiped are cut out.
And an electrostatic electrode 31a extending laterally at the center of the front surface
And an insulating layer 31d covering the electrostatic electrode 31a. The insulating base 31b is supported by a stand 130.

The length of the electrostatic electrode 31a in the vertical direction is preferably larger than the width of the tape-shaped recording medium 23, and is extended in the horizontal direction along the running direction of the tape-shaped recording medium 23. Furthermore, the electrostatic electrode 31a is
, And is configured to contact the tape-shaped recording medium 23.

The electrostatic electrode 31a is provided with a terminal 31e, and a high voltage generation circuit 1 is provided between the terminal 31e and the chassis.
7, a high voltage is applied. Due to the application of the high voltage, static electricity is distributed as a positive charge to the electrostatic electrode 31a, and the positive charge attracts a negative charge generated by polarizing the insulating layer of the tape-like recording medium 23, and thereby the tape-like recording medium 2
3 is attracted to the electrostatic electrode 31a.

The high voltage generation circuit 17 is a high voltage generation control circuit 1
A high voltage of, for example, about 1.5 KV is generated at the timing controlled from Step 6 and applied between the terminal 31e and the chassis.
When a high voltage is supplied from the high voltage generation circuit 17, a positive charge is immediately generated in the electrostatic electrode 31a, and an attraction force of the tape-shaped recording medium 23 is generated. The positive charge of the electrode 31a is quickly discharged, and the attraction force of the tape-shaped recording medium 23 is lost. This electrostatic attraction force is proportional to the product of the effective length (the length of the tape in contact) L of the electrostatic electrode 31a, the electrode voltage E, and the tape width t. It is proportional to the product of the dielectric constant of the coating layer 31d, the coefficient of friction between the tape 23 and the coating layer 31d, and the like.

Next, a configuration around the electrostatic braking mechanism EC will be described. The tape-shaped recording medium 23 has an information signal recorded on a magnetic recording layer provided on one side of a tape-shaped insulating layer, is loaded from a mounted cassette (see FIG. 2), and runs in a predetermined running direction V during reproduction. I do.

The cylindrical rotary drum 24 has a cylindrical shape, and incorporates video signal reproducing heads 25a and 25b and an erasing head 25c on its outer periphery and is rotatable about its axis. Running tape-shaped recording medium 2
3 is wound so as to be in contact with the magnetic recording layer side, and is rotatable at a linear velocity higher than the linear velocity of the traveling tape-shaped recording medium 23.

On the chassis surface around the rotary drum 24,
A plurality of guide pins 26 are provided vertically. The running path of the tape-shaped recording medium 23, that is, the tape path, is regulated by the plurality of guide pins 26.

The tape-shaped recording medium 23 advances from the position of the guide pin 26 on the left side of the rotating drum 24 in FIG.
From the lower end of the outer periphery to the position beyond the right end of the outer periphery.
Wound over a range of 80 ° or more, the rotating drum 24
The vehicle travels to the position of the right guide pin 26.

The tape pass beyond the capstan 2
7 and a pinch roller 28 are provided so as to hold the tape-shaped recording medium 23. When running the tape-shaped recording medium 23, the pinch roller 28 is moved to press the tape-shaped recording medium 23 against the capstan 27, and the rotation of the capstan 27 causes the tape to run reliably.

On the other hand, the rotating pin 29 is attached to the tension regulation arm 34, and after the tape-shaped recording medium 23 is pulled out from the loaded cassette and loaded, the tape-shaped recording medium 23 running at the position X1 in FIG. 23 is given a certain tension. Further, when the traveling of the tape-shaped recording medium 23 is stopped, the tension regulation arm 34 moves the rotary pin 29 to the position X2 to reduce the tension.

During normal reproduction, the capstan 27 rotates to feed the tape-shaped recording medium 23 at a constant speed, and the tape-shaped recording medium 23 supplied from the supply reel 21 and given a predetermined tension by the rotating pins 29 is rotated. As described above, the take-up reel 2 travels around the rotary drum 24 via the capstan 27 and the pinch roller 28.
It is wound up in 2.

On the other hand, the electrostatic braking mechanism EC is not operated during this time, and the tape-shaped recording medium 23 runs at a position away from the electrostatic braking body 31.

Then, when the normal reproduction is shifted to the still reproduction in which the running of the tape-shaped recording medium 23 is stopped while rotating the rotary drum 24, the rotation of the capstan 27 is stopped, and at the same time, the take-up with the supply reel 21 is performed. The rotation of the reel 22 is stopped.

Here, the rotation of the capstan 27 is stopped, but the pinch roller 28 is still placed at a position where the capstan 27 is pressed. As a result, the tape-shaped recording medium 23 is fixed between the capstan 27 and the pinch roller 28.

At the same time as the rotation of the capstan 27 is stopped, the tension regulation arm 34 moves the rotation pin 29 to the still position X2 to reduce the tension.
When the rotating pin 29 moves to the still position X2,
The path of the tape-shaped recording medium 23 is changed, and the electrostatic brake 3
It comes into contact with 1.

Here, since the outer peripheral surface of the rotary drum 24 rotates at a large linear velocity, while the tape-shaped recording medium 23 is stopped, an air layer is formed between the rotary drum 24 and the tape-shaped recording medium 23. .

Therefore, when the rotating pin 29 is at the still position X2
When the tension applied to the tape-shaped recording medium 23 is reduced by moving to
It is sent to the rotating drum 24 side.

Next, a high voltage is supplied from the high voltage generation circuit 17 to the electrostatic electrode 31a of the electrostatic brake 31, and
When static electricity is generated in a, the electrostatic electrode 31a electrostatically attracts the tape-shaped recording medium 23, and the tape-shaped recording medium 23 is attracted and fixed to the electrostatic brake 31.

As described above, the tape-shaped recording medium 23
Is fixed by the electrostatic braking mechanism EC on the upstream side from the rotary drum 24, and is fixed between the capstan 27 and the pinch roller 28 on the downstream side from the rotary drum 24, and there is a slight amount of margin around the rotary drum 24. The resulting tape-shaped recording medium 2
3 is present.

Here, since the tension by the tension regulation arm 34 and the rotating pin 29 is cut off by the electrostatic braking mechanism EC, the tension of the tape-shaped recording medium 23 around the rotating drum 24 is further reduced, and as described above. Since there is some room, the rotating drum 24
The peripheral tape-shaped recording medium 23 easily gets on the air layer formed by the rotating drum 24 and separates from the outer periphery of the rotating drum 24. This separation is constantly maintained.

As a result, the tape-shaped recording medium 23 does not come into contact with the rotating drum 24 during the still playback, and even if the still playback is performed for a long time, the tape-shaped recording medium 23 collides with the side surface of the rotating drum 24 or the head 25. The medium 23 can be prevented from being damaged, and at the same time, the head 25 can be prevented from being worn.

Further, since the tape-shaped recording medium 23 is fixed by the electrostatic braking mechanism EC and the capstan 27 and the pinch roller 28, the tape-shaped recording medium 23 does not fall off even if the tension is reduced. .

Further, the tape-shaped recording medium 23 includes an electrostatic braking mechanism EC, a capstan 27 and a pinch roller 28.
Since no more play is produced in the tape amount by the fixing, the tape-shaped recording medium 23 is not caught even when the rotary drum 24 is rotating.

In addition, since the electrostatic braking mechanism EC holds and fixes the tape-shaped recording medium 23 without applying a mechanical pressure, the tape-shaped recording medium 23 is not damaged or deformed during the holding.

Further, the electrostatic electrode 31 of the electrostatic braking mechanism EC
In the case of a, the tape-shaped recording medium 23 can be detached from the electrostatic braking mechanism EC very easily and without any deformation by stopping the application of the voltage and rapidly reducing the suction force to zero.

Further, the displacement of the tape-shaped recording medium 23 due to the attachment / detachment of the tape-shaped recording medium 23 by the electrostatic braking mechanism EC is extremely small, so that the position management of the tape-shaped recording medium 23 can be easily performed.

Since the tape-shaped recording medium 23 is attached to and detached from the electrostatic braking mechanism EC by static electricity and does not require mechanical driving, it can be operated quickly and can be made lightweight.

Next, an embodiment of a reproducing apparatus for a tape-shaped recording medium according to the present invention will be described, taking a VTR apparatus for reproducing as an example.

FIG. 5 is a part of a block diagram showing a system configuration of a VTR apparatus which is an embodiment of a tape-shaped recording medium reproducing apparatus according to the present invention, and shows a system configuration of a servo system. FIG. 6 is a state transition diagram of this device. FIG. 7 is a main flowchart of a control program showing the operation of this apparatus. 8 and 9 further illustrate that
8 is a flowchart of a servo process in the main flowchart of FIG.

In FIG. 5, the system control CP
U1 is an arithmetic processing unit that controls the entire apparatus.
The system control CPU 1 is connected to the program memory 2 and the servo CPU 3 via a system bus,
Upon receiving a mode signal Md corresponding to an operation from a switch unit and a remote controller (both not shown), the control unit executes a control program in the program memory 2 and sends a control instruction to the servo CPU 3.

The servo CPU 3 has a plurality of input / output ports in addition to transmitting and receiving signals and data via a system bus. Hereinafter, functions of components connected to each output port and input port will be described.

An S (supply) motor drive circuit (driver: the same applies hereinafter) 4 is connected to the output port SD.
When a control signal is issued from the output port SD, the S motor drive circuit 4 drives the supply motor 5 to rotate based on the control signal. The FG provided on the supply motor 5
(Frequency generator)
The FG signal generated by the rotation is input port SF.
G is input.

The output port CD has C (capstan)
When the motor drive circuit 6 is connected and a control signal is issued from the output port CD, the C motor drive circuit 6 drives the capstan motor 7 to rotate based on the control signal. From the FG provided on the capstan motor 7, an FG signal generated due to the rotation is input to the input port CFG.
Is input to

A D (drum) motor drive circuit 8 is connected to the output port DD, and drives the drum motor 9 to rotate. The drum motor 9 has FG and PG (phase
A FG signal is provided to the input port DFG and the input port D, and an FG signal corresponding to the rotation speed and a PG signal for detecting the positions of the recording head and the reproducing head are provided.
Each is input to PG.

The drum motor 9 drives a directly connected drum mechanism unit (abbreviated as a drum in the drawing) 10. The drum mechanism 10 is provided with a time code head,
The time code signal for each frame recorded on the tape is reproduced and sent to the PB amplifier circuit 11. The PB amplifier circuit 11 amplifies and outputs the reproduced time code signal. The TC (time code) reader circuit 12 digitizes the amplified time code signal and inputs it to the system control CPU 1.

The output port TD has T (take-up).
The motor drive circuit 13 is connected and drives the take-up motor 14 to rotate. And take-up motor 1
From the FG provided at 4, the F generated by the rotation is generated.
The G signal is input to the input port TFG.

A TTP (cassette / tension arm / loading / pinch roller) drive circuit 15 is connected to the output ports D1 to D4 to drive a tape loading mechanism, a cassette up / down mechanism, a tension arm, and a pinch roller mechanism. .

The output port HV has a high voltage generation control circuit 1
6 is connected to supply a voltage to a high voltage generating circuit 17 composed of a transformer or the like to generate a high voltage. The generated high voltage is supplied to the electrostatic brake.

A sensor interface 18 is connected to the input ports V1 to V3, and a tension sensor for detecting the tension of the tape, a cassette sensor for detecting the presence or absence of a cassette, and a position sensor for detecting the position of a moving member such as a tension arm. The detection signal from is input.

When the device starts to operate, it operates under any of the modes shown in FIG. 6 and transitions between the modes. When the power switch is turned on, the system control CPU 1 executes the main flow shown in FIG. That is, a predetermined initialization process (step S
After performing 1), switch processing (step S2), mode setting processing (step S3), and servo processing (step S2)
4), video signal processing (step S5), and other processing (step S6).

Then, it is determined whether or not the power switch has been turned off (step S7). If the power switch has not been turned off, the process shifts to step S2 to repeat the processes up to step S6. If the power switch is turned off in step S7, a power-off process, for example, a process of storing the set mode in the memory is performed.

In the switch processing in step S2,
The operation of the switch unit or the remote controller is detected, and the mode setting process in step S3 is executed according to the detection result. In the initialization processing of step S1, the stop mode in the state transition diagram of FIG. 6 is initially set.

In FIG. 6, REC in the stop mode
When the (recording) switch is turned on, the mode shifts to the REC mode, i.e., the recording mode. In the stop mode, when the PB (playback) switch is turned on, the mode shifts to the normal playback mode. In the normal playback mode, when the stop switch is turned on, the mode returns to the stop mode.

In the stop mode, FF (fast forward)
When the switch or the REW (rewind) switch is turned on, the mode shifts to the FF / REW mode. In the FF / REW mode, when the stop switch is turned on, the mode returns to the stop mode, and when the PB switch is turned on, the mode shifts to the normal reproduction mode.

In the normal reproduction mode, when the FF switch or the REW switch is turned on, JOG (jog) is performed.
When the PB switch is turned on in the JOG mode, the mode returns to the normal reproduction mode.

In the normal reproduction mode, STILL
When the (still) switch is turned on, the mode shifts to the still playback mode. When the PB switch is turned on in the still playback mode, the mode returns to the normal playback mode.

The system control CPU 1 controls the servo CPU via the system bus according to the set mode.
Control 3 That is, as shown in FIG.
First, sensor processing (step S41) is performed, and mode determination processing (step S42) is performed.

In the sensor processing in step S41, when it is detected by the sensor interface 18 that the cassette is not yet mounted at the input port V2 of the servo CPU 3 in FIG. 5, the stop mode is maintained. Waiting for cassette installation. When the cassette is mounted, the tape is pulled out and loading control is performed. Since the operation of the loading control is not directly related to the present invention, the flow of the servo processing of the loading control is omitted.

That is, the servo processing in the state where the loading signal is output from the output port (not shown) of the servo CPU 3 and the loading of the tape is completed will be described.

When the loading of the tape is completed, as shown in FIG. 2, the tape-shaped recording medium 23 loaded from the loaded cassette 20 is rotated by a rotating drum via a plurality of guide pins 26 and rotating pins 29. The guide path 26 regulates the running path, that is, the tape path, and reaches the capstan 27 and the pinch roller 28. In the initial state, the traveling path of the tape-shaped recording medium 23 is located at a position distant from the electrostatic braking mechanism EC.

Capstan 2 provided in the tape path
7 and the pinch roller 28 are located at positions sandwiching the tape-shaped recording medium 23, and when the tape runs, the pinch roller 2
8 is moved, and the tape-shaped recording medium 23 is moved to the capstan 2.
7 so that the tape runs reliably by the rotation of the capstan 27.

The rotating pin 29 attached to the tension regulation arm 34 applies a certain tension to the running tape.

In this loading state, it is determined in step S43 in FIG. 8 whether or not there is a mode change. If there is no mode change, this flow is terminated and the flow returns to the main flow in FIG. Return. When the mode has been changed, it is determined whether or not the mode has been changed to the still mode (step S44).

If it is the change to the still mode, the drive signal from the output port CD of the servo CPU 3 is stopped, and the capstan motor 7 is turned off (step S4).
5) The rotation of the capstan 27 is stopped. At the same time, the drive signal from the output port SD of the servo CPU 3 is stopped, and the supply motor 5 is turned off (step S
46), the rotation of the supply reel is stopped.

During this time, the rotation of the capstan 27 is stopped, but the pinch roller 28 is still placed at a position where the capstan 27 is pressed. As a result, the tape-shaped recording medium 23 is fixed between the capstan 27 and the pinch roller 28.

Next, a control signal for reducing the tape tension is output from the output port D2 of the servo CPU 3 to the TTP drive circuit 15 (step S47). The rotation pin 29 shown in FIG. 1 is moved to the still position X2 by the tape tension reduction control signal,
To reduce the tension applied to

In step S48, the rotating pin 29
Is determined to have moved to the still position X2.
When the rotation pin 29 moves to the still position X2, the tape-shaped recording medium 23 moves to a position where it comes into contact with the electrostatic braking mechanism EC.

Next, an ON control signal is output from the output port HV of the servo CPU 3 to the high voltage generation control circuit 16 to perform an ON process of the electrostatic braking mechanism EC (step S49).
As a result, a high voltage is supplied from the high voltage generation circuit 17 to the electrostatic electrode 31a of the electrostatic braking mechanism EC, and static electricity is generated on the electrostatic electrode 31a to attract the tape-shaped recording medium 23 that is in contact.

The tape-shaped recording medium 23 has an electrostatic braking mechanism EC.
After being fixed by adsorption on the surface of
A signal is output from the output port CD of the servo CPU 3 to the capstan motor drive circuit 6 to drive the capstan control device 127 to rotate the capstan motor 7 in the reverse direction. That is, as shown in FIG. 1, the capstan 27 is rotated in the direction of the arrow to return the tape-shaped recording medium 23 by a predetermined amount in the direction of the arrow W, that is, in the direction opposite to the running direction V during reproduction.

As a result, the tape-shaped recording medium 23 which was in contact with the periphery of the rotary drum 24 was completely separated from the rotary drum 24 from the position 23A to the position 23B partially separated from the rotary drum 24. Move to position 23C. The tape tension is about 7 at 23A.
g, about 0.5 g at 23B, 0 at 23C
g. At the position 23C, a continuous air layer (air film) 35 is formed between the outer peripheral surface of the rotary drum 24 and the tape-shaped recording medium 23. In this case, the recording head 25a, the reproducing head 25b, and the erasing head 25c provided on the rotating drum 24 do not contact the tape-shaped recording medium 23.

Further, in this case, the tape-shaped recording medium 23 whose tension has been reduced to 0 g is fixed at two points of the electrostatic braking mechanism EC and the capstan 27, so that it does not slip down.

Further, the tape-shaped recording medium 23 fixed at the above two points will not be caught by the rotation of the rotary drum 24.

In order to control the movement of the tape-shaped recording medium 23 to the position 23C, it is necessary to control the return amount of the tape-shaped recording medium 23. Therefore, the servo CPU 3
In the input port CFG, the FG proportional to the rotation amount of the capstan motor 7 for driving the rotation of the capstan 27 is
The rotation amount of the capstan 27 is detected based on the signal.
That is, in step S51, the capstan 27
It is determined whether or not the predetermined rotation has been completed.

If the predetermined rotation of the capstan 27 has not been completed, the reverse rotation process of the capstan motor 7 in step S50 is continued. When the predetermined rotation of the capstan 27 is completed, an air layer 35 is formed at a predetermined interval between the rotary drum 24 and the tape-shaped recording medium 23, so that this flow ends and the flow returns to the main flow of FIG.

On the other hand, if the mode change is not a change to the still playback mode in step S44, it is determined whether or not the change to the normal playback mode is made (step S52). If it is a change to the normal reproduction mode, it is determined whether or not the current mode is the still reproduction mode and still reproduction is being performed (step S53).

If still playback is in progress, the servo CP
The signal from the output port HV of U3 to the high voltage generation control circuit 16 is turned off, and the high voltage generation circuit 17
By stopping the supply of high voltage to the
1 is performed (step S54).

Next, a signal from the output port D2 of the servo CPU 3 to the TTP drive circuit 15 is controlled to perform a tape tension increasing process (step S55). Then, it is determined whether or not the rotating pin 29 in FIG. 1 has moved to the reproduction traveling position X1 (step S56). If it has not moved to the reproduction travel position X1, the reproduction travel position X1
Until the processing moves to step S55.

In this case, since no high voltage is supplied to the electrostatic brake 31, the residual static electricity is rapidly reduced. Therefore, the tape-shaped recording can be performed only by moving the rotary pin 29 to the reproduction traveling position X1. The medium 23 is quickly separated from the electrostatic brake 31, and can quickly shift to the preparation state for normal reproduction. Further, in this case, the transition to the normal reproduction is smoothly performed without causing a track shift.

When the rotation pin 29 moves to the reproduction traveling position X1, a signal is output from the output port CD and the output port SD of the servo CPU 3 to turn on the capstan motor 7 (step S57). An ON process is performed (step S58). Thus, normal reproduction starts. When the normal reproduction starts, this flow ends and the process returns to the main flowchart of FIG.

If it is determined in step S52 that the mode change is not the normal reproduction mode, the process moves to entry number 1 in the flow of FIG. In step S71 in FIG. 9, it is determined whether or not a change to the stop mode has been made. If the change is to the stop mode, the servo C
The output port D4, the output port CD, the output port SD, and the output port DD of the PU3 are turned off, and the pinch roller 28 is turned off (Step S72), the capstan motor 7 is turned off (Step S73), and the supply motor 5 is turned off. Off processing (step S74), the drum motor 9
Is performed (step S75).

Next, a process for controlling the signal from the output port D2 of the servo CPU 3 to the TTP drive circuit 15 to reduce the tape tension is performed (step S76).
Then, it is determined whether or not the tension regulation arm 34 has moved to the stop position in the stop mode (step S77).

If the tension regulation arm 34 has not moved to the stop position, the process of step S76 is continued until the tension regulation arm 34 moves to the stop position. When the tension regulation arm 34 has moved to the stop position, this flow ends and the flow returns to the main flow of FIG.

If it is determined in step S71 that the mode change is not a change to the stop mode, the JOG mode
This is a change to the FF / REW mode or the recording mode, but the description is omitted.

Further, the mode is changed to the normal reproduction mode in step S52 of FIG.
In the case where the current mode is not during still playback, that is, during stop, the servo C in FIG.
A signal from the output port D2 of the PU3 to the TTP drive circuit 15 is controlled to perform a tape tension increasing process (step S78).

Then, it is determined whether or not the rotary pin 29 in FIG. 1 has moved to the tape running position X1 (step S79). If the rotation pin 29 has not moved to the reproduction travel position, the process proceeds to step S7 until the rotation pin 29 moves to the reproduction travel position.
8 is continued.

When the rotation pin 29 moves to the reproduction running position, the output port CD and the output port S
D, a signal is output from the output port DD to turn on the capstan motor 7 (step S80), turn on the supply motor 5 (step S81), and turn on the drum motor 9 (step S82). ). Then, this flow is ended and the process returns to the main flow of FIG.

As described above, according to the present embodiment, since the electrostatic braking mechanism is made to function effectively, the tape can be prevented from being damaged, the tape can be prevented from being entangled, and the tape can be prevented from falling off in the still playback mode. Not only is realized,
The transition from the still playback mode to another mode, or the transition from the other mode to the still playback mode, does not impair the function of the electrostatic braking mechanism, and the electrostatic braking mechanism hinders the operation of other modes. It was clarified that the transition / transition was possible very smoothly.

In the above embodiment, a tape on which a video signal is magnetically recorded as a tape-shaped recording medium has been described. However, the present invention is not limited to this. The present invention can also be applied to

In the above embodiment, the present invention has been described by taking a VTR device having a rotary head as an example, but the field to which the present invention can be applied is not limited to the VTR device. For example, the present invention can be applied to an apparatus for recording and reproducing digital data other than video signals, such as a data recorder having a rotating head, and a control method thereof.

Also in a device such as a data recorder, when editing recorded data, the tape may be damaged because a part of the tape is repeatedly reproduced. Therefore, by attaching the electrostatic braking mechanism of the present invention to such a data recorder or the like, and by applying the reproducing method of the present invention, the recording medium tape may be damaged, or the tape may be attached to a rotating member or the like. It can be prevented from being caught.

The information signal to be reproduced may be a digital audio signal recorded on a tape. For example, even in the case of DAT, when editing a recorded audio signal, a tape may be damaged because a part of the tape is repeatedly reproduced. Therefore, such a D
By attaching the electrostatic brake component of the present invention to the AT device, it is possible to prevent the tape from being damaged and the tape from being caught in a rotating member or the like.

[0118]

As described above, when performing special reproduction such as still reproduction, for example, the running of the tape-shaped recording medium is stopped while rotating the rotating drum, and the tension applied to the tape-shaped recording medium is further reduced. According to the present invention, however, according to the present invention, the tape-shaped recording medium that has been stopped and the tension of which has been relaxed is fixed and held by the electrostatic brake of the electrostatic braking mechanism by electrostatic attraction, and the tape-shaped recording medium is held in the capstan. By fixing and holding, the tension applied to the tape-shaped recording medium is further reduced.

After the tape-shaped recording medium is fixed and held by the electrostatic braking mechanism, a predetermined amount of tape is fed to the rotating drum side by the reverse rotation of the capstan at a position downstream from the rotating drum, and the tape is moved by a small margin. After the increase, the tape-shaped recording medium is fixed and held by the capstan, so that a continuous air layer having a predetermined thickness is formed on the outer periphery of the rotating drum, and the tape-shaped recording medium is completely separated from the outer periphery of the rotating drum by the continuous air layer. It is to let.

As a result, the low-tension tape-shaped recording medium can easily ride on the air layer formed on the outer periphery of the rotary drum, and the air layer can completely separate the tape-shaped recording medium from the outer circumference of the rotary drum. it can. As a result, the tape-shaped recording medium does not come into contact with the rotating drum during still playback, and even if the still playback is performed for a long time, the tape-shaped recording medium is prevented from being damaged by collision with the side surface of the rotating drum or the head. And at the same time, head wear can be prevented.

Further, the tape-shaped recording medium is electrostatically attracted to the electrostatic braking mechanism and fixed, and the tape-shaped recording medium is fixed and held at the capstan and held at two points. The tape-shaped recording medium does not fall off.

Further, the tape-shaped recording medium is electrostatically attracted to the electrostatic braking mechanism and fixed, and furthermore, the tape-shaped recording medium is fixed and held at the capstan and held at two points, so that the tape amount can be further increased. Since no play occurs, it is possible to prevent the tape-shaped recording medium from being caught in the rotating drum.

Moreover, since the tape-shaped recording medium is held by the electrostatic braking mechanism without applying any mechanical pressure, the tape-shaped recording medium is not damaged or deformed during the holding.

Further, the electrostatic braking mechanism causes the tape-shaped recording medium to be detached from the electrostatic braking mechanism extremely easily and without any deformation by stopping the application of the voltage and suddenly reducing the suction force to zero. be able to.

Further, the displacement of the tape-shaped recording medium when the tape-shaped recording medium is attached to and detached from the electrostatic braking mechanism is small, and thus the position of the tape-shaped recording medium can be easily managed.

Also, since the attachment and detachment of the tape-shaped recording medium to and from the electrostatic braking mechanism is performed by static electricity and does not require a mechanical drive, there is a remarkable effect that the operation can be performed quickly and the weight can be reduced. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a configuration of an embodiment of an electrostatic braking mechanism according to the present invention.

FIG. 2 shows a V having the electrostatic braking mechanism shown in FIG. 1 incorporated therein.
It is a schematic perspective view of the principal part of TR device.

FIG. 3 is a perspective view of a configuration example of an electrostatic brake of the electrostatic brake mechanism shown in FIG. 1;

FIG. 4 is an explanatory diagram of an assembled state of the electrostatic braking mechanism shown in FIG.

FIG. 5 is a block diagram of a system in an embodiment of a tape-shaped recording medium reproducing apparatus according to the present invention.

FIG. 6 is a state transition diagram of the tape-shaped recording medium reproducing device shown in FIG. 5;

FIG. 7 is a main flowchart of a control program of the tape-shaped recording medium reproducing device shown in FIG. 5;

FIG. 8 is a flowchart of a servo process in the flowchart of FIG. 7;

FIG. 9 is a flowchart of a servo process following FIG. 9;

FIG. 10 is a schematic perspective view of a main part of a conventional VTR device to which a tape is attached.

[Explanation of symbols]

EC: Electrostatic braking mechanism according to the present invention, 16: High-voltage generation control circuit, 17: High-voltage generation circuit, 23: Tape-shaped recording medium (tape), 24: Rotating drum, 25a to 25
c head 26 guide pin 27 capstan 28 pinch roller 29 rotating pin 31
... Electrostatic brake, 31a ... Electrostatic electrode, 34 ... Tension regulation arm, 35 ... Air layer, 127
... Capstan control device, V... Running direction of tape-shaped recording medium during reproduction, W... Reverse running direction of tape-shaped recording medium

Claims (6)

[Claims] An information signal is recorded on a magnetic recording layer provided on one side of a tape-shaped insulating layer, and a tension control mechanism for applying a predetermined tension to a tape-shaped recording medium capable of traveling in a predetermined traveling direction. A read head is built in and disposed downstream from the tension control mechanism in the predetermined traveling direction, and is disposed at a position between the tension control mechanism and a rotating drum that winds and rotates the tape-shaped recording medium and has a predetermined dielectric constant. An electrode provided on the insulating substrate and receiving a supply of voltage; an insulating coating layer covering the electrode; and a voltage application unit for applying a voltage to the electrode. Is an electrostatic braking mechanism for a tape-shaped recording medium, wherein the mechanism is disposed at a position where the tape-shaped recording medium can contact the insulating layer via the coating layer. 2. A tape-shaped recording medium on which an information signal is recorded is loaded on a magnetic recording layer provided on one side of a tape-shaped insulating layer, and the tape-shaped recording medium is run on a predetermined traveling path. An electrostatic electrode braking mechanism provided in an apparatus that reproduces a signal, the electrostatic electrode braking mechanism being disposed in the middle of the traveling path of the tape-shaped recording medium, an insulator having a predetermined dielectric constant, and being held on the insulator, An electrode that generates static electricity that attracts and holds the insulating layer of the tape-shaped recording medium when a voltage is applied, and an insulating coating layer that covers the electrode. Characteristic electrostatic electrode. 3. A tape-shaped recording medium on which an information signal is recorded on a magnetic recording layer provided on one side of a tape-shaped insulating layer and which can run in a predetermined direction is wound around a rotary drum provided with a head. A tension control mechanism arranged upstream from the rotary drum in the predetermined direction applies a predetermined tension to the tape-shaped recording medium, and the tape is rotated by rotation of a capstan located downstream from the rotary drum in the predetermined direction. Sending out the recording medium in the predetermined direction and running.
An apparatus for reproducing a tape-shaped recording medium, comprising: an insulating base having a predetermined dielectric constant downstream of the tension control mechanism and upstream of a rotary drum; and an electrode provided on the insulating base and receiving a voltage. An insulating coating layer that covers the electrode; and a voltage application unit that applies a voltage to the electrode. An electrostatic braking mechanism that generates static electricity on the electrode by applying the voltage, the tape-shaped When the tape-shaped recording medium is arranged so as to be in contact with the insulating layer of the recording medium and the traveling of the tape-shaped recording medium is stopped while rotating the rotating drum, the capstan stops rotating and the tape-shaped recording medium is stopped. The tension control mechanism relieves the tension, and the electrostatic braking mechanism sucks and abuts the tape-shaped recording medium to be in contact with static electricity. An apparatus for reproducing a tape-shaped recording medium, comprising: 4. A tape-shaped recording medium on which an information signal is recorded on a magnetic recording layer provided on one side of a tape-shaped insulating layer and which can run in a predetermined direction is wound around a rotary drum provided with a head. A tension control mechanism arranged upstream from the rotary drum in the predetermined direction applies a predetermined tension to the tape-shaped recording medium, and the tape is rotated by rotation of a capstan located downstream from the rotary drum in the predetermined direction. Sending out the recording medium in the predetermined direction and running.
An apparatus for reproducing a tape-shaped recording medium, comprising: an insulating base having a predetermined dielectric constant downstream of the tension control mechanism and upstream of a rotary drum; and an electrode provided on the insulating base and receiving a voltage. An insulating coating layer that covers the electrode; and a voltage application unit that applies a voltage to the electrode. An electrostatic braking mechanism that generates static electricity on the electrode by applying the voltage, the tape-shaped When the tape-shaped recording medium is stopped running while rotating the rotating drum, the capstan stops rotating, and the tension control mechanism is arranged to be able to contact the insulating layer of the recording medium. The tension is relieved, and the tape-shaped recording medium with which the electrostatic braking mechanism comes into contact is sucked and braked by static electricity. Then, the capstan is reversely rotated by a predetermined amount to form the tape-shaped recording medium. An apparatus for reproducing a tape-shaped recording medium, wherein the recording medium is fed to the rotating drum side by a predetermined amount. 5. A tape recording medium which records an information signal on a magnetic recording layer provided on an insulating layer and runs in a predetermined direction,
A predetermined tension is applied, and the magnetic recording layer is brought into contact with the outer periphery of a rotating drum provided with a read head to reproduce the information signal, and the tape is rotated by rotation of a capstan downstream from the rotating drum. A first control procedure for feeding the tape-shaped recording medium in the predetermined direction, and when stopping the running of the tape-shaped recording medium during rotation of the rotary drum, stopping the rotation of the capstan;
And a second control procedure for alleviating the tension applied to the tape-shaped recording medium; and applying a voltage to an electrode provided at a position between the rotary drum and the tension control mechanism to generate a tension due to generated static electricity. And a third control procedure for adsorbing and fixing the insulating layer side of the tape-shaped recording medium in which the pressure is reduced, and a method of reproducing the tape-shaped recording medium. 6. A tape recording medium which records an information signal on a magnetic recording layer provided on an insulating layer and runs in a predetermined direction,
A predetermined tension is applied, and the magnetic recording layer is brought into contact with the outer periphery of a rotating drum provided with a read head to reproduce the information signal, and the tape is rotated by rotation of a capstan downstream from the rotating drum. A first control procedure for feeding the tape-shaped recording medium in the predetermined direction, and stopping the rotation of the capstan and stopping the tape-shaped recording medium when stopping the running of the tape-shaped recording medium during rotation of the rotary drum. A second control procedure for reducing the tension applied to the tape; and applying a voltage to an electrode provided at a position between the rotary drum and the tension control mechanism, and the tape whose tension is reduced by generated static electricity. A third control procedure for adsorbing and fixing the insulating layer side of the recording medium, and rotating the capstan in reverse and measuring the amount of reverse rotation. The method of reproducing a tape-shaped recording medium and having a fourth control procedure for advancing the serial tape-shaped recording medium in the reverse direction by a predetermined amount, the.