JPH0540990A - Tape winder for magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To excute stable traveling of a tape at the time of start up in fast fowarding or rewinding of the tape. CONSTITUTION:At the time of start up in fast fowarding or rewinding, at first the tape is wound in low speed, and thereafter, a tape driving motor is driven in a sequence accelerating the tape in turn with three steps of tape winding speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape winding device for a magnetic recording / reproducing apparatus, and more particularly to a functional structure for preventing tape tension in a tape winding device for a magnetic recording / reproducing apparatus.

[0002]

2. Description of the Related Art At present, a large number of magnetic recording / reproducing apparatuses have been commercialized for recording information by magnetizing a magnetic record carrier and reading and outputting information from the magnetic record carrier.
Some of these use a magnetic tape, which is made by applying a magnetic material on a thin film, as a magnetic record carrier. The tape winding of a magnetic recording / reproducing apparatus uses this magnetic tape as a magnetic record carrier. In the apparatus, the tape speed can be set so that the tape runs at a high speed in order to perform fast-forwarding and rewinding, in addition to the tape running speed when playing or recording. However, as described above, the traveling speed of the tape at the time of fast-forwarding and rewinding is high, and the magnetic tape is damaged due to the rapid speed change. Therefore, in order to prevent this, it is shown in FIG. Such a tape tension stabilizing device 10 is installed in the tape winding device to mechanically relieve the tape tension.

The tape tension stabilizing device 10 includes an arm 11, a stop pin 13 installed on the arm 11, and a spring 15 for urging the arm 11 in a certain direction.
A positioning device 17 for setting the position of the arm 11,
And the magnetic tape 2 is attached to the stop pin 13.
It can be multiplied by zero.

In the tape tension stabilizing device 10 thus configured, the positioning device 17 moves the arm 11 so that the magnetic tape 20 is hooked on the stop pin 13 when the tape is loaded in the magnetic recording / reproducing device. move. Here, since the arm 11 is biased in a certain direction by the spring 15, when the traveling speed of the magnetic tape 20 changes abruptly due to fast forward or rewind of the magnetic tape 20, the arm 11 remains constant. The tape tension is relieved mechanically by moving in the direction.

However, the movement of the arm 11 as described above is generally vibration. That is, when the running speed of the magnetic tape 20 suddenly changes, the tape tension increases momentarily, but immediately after that, the tape tension decreases due to the sudden relaxation action of the tape tension stabilizer 10. Become. However, since the change is rapid, when the relaxation action of the tape tension stabilizing device 10 is exhausted, the tape tension increases again. In this way, the tape tension is repeatedly increased and decreased, and the tape tension converges to a constant value. Then, during such a time until the tape tension converges to a constant value, that is, an unstable time of the tape running speed due to repeated increase and decrease of the tape tension, the running speed of the magnetic tape 20 changes rapidly. The longer the change, the greater the degree of instability in the above time, and the greater the change in the running speed of the magnetic tape 20. An example of such a state is shown in FIG. 5, but in such a state, the arm 1 of the tape tension stabilizer 10 is
It can be seen that hunting occurs in No. 1.

By the way, the above-mentioned hunting occurs because the running speed of the magnetic tape 20 changes abruptly. To prevent this, the running speed of the magnetic tape 20 itself is gently changed. The invention has been made.

FIG. 6 shows an example of a conventional invention that moderates the change itself in the running speed of the magnetic tape 20 and shows a starting sequence of the drive motor at the time of fast-forwarding or rewinding. The top row shows the tape speed. The servo mode of the drive motor includes a STOP mode, an SP5 speed mode in the FG control process, and a CTL control process, and the motor voltage (indicated as Motor-V) has two stages of 12V and 18V. As shown in FIG.
At the beginning of fast-forwarding or rewinding, the tape is accelerated at a speed 5 times faster than the SP mode, then the voltage of the drive motor is increased and the servo mode is switched to the CTL control at the same time.
Accelerate to the set tape maximum speed. In addition, FG
The control is a control method of controlling the rotation speed of the motor by detecting the rotation speed of the motor by reading a pulse signal generated by the rotation of the motor by magnetizing the rotation shaft of the motor that runs the magnetic tape 20. Say. The CTL control is to read the CTL signal recorded on the magnetic tape 20 to detect the traveling speed of the magnetic tape 20 to detect the magnetic tape 20.
Is a control method for controlling the traveling speed of the vehicle. The SP mode is a mode in which the magnetic tape 20 travels at a constant speed during recording and reproduction.

[0008]

In the conventional fast-forward / rewind drive motor starting sequence, the hunting of the tape tension stabilizer 10 is large and the operation is stable immediately after the start of the fast-forward / rewind operation during tape acceleration. It took time to do. This is especially the case when tension regulator hunting occurs when the tape tension suddenly increases, that is, when the tape is rapidly accelerated. Further, when hunting occurs, there is a problem that the tape tension fluctuates greatly, the CTL signal cannot be read by the CTL head, and the tape may run on the flange of each pin of the running system and be damaged.

The present invention has been made in order to solve the above problems, and in a tape winding device of a magnetic recording / reproducing apparatus, avoids a rapid increase in tape tension at the time of fast forward or rewind start. The purpose is to

[0010]

In order to solve the above problems, in the tape winding device of the magnetic recording / reproducing apparatus according to the present invention, in the sequence of the tape drive motor at the time of fast forward / rewind, fast forward or When rewinding, the slack of the tape is removed, the tape is wound at low speed until the tension regulator operates stably and the tape tension becomes constant, and then fast forward / rewind is performed at high speed. Then, in the sequence of the tape drive motor at the time of fast-forwarding / rewinding according to the present invention, after the tape winding operation, the tape is sequentially accelerated to the maximum speed set in several stages.

That is, a tape tension stabilizing device for mechanically relaxing the tape tension by using a spring or the like is provided, and an FG control mechanism for detecting the rotation speed of a motor for running the tape to control the rotation speed of the motor and the tape. A CTL control mechanism for detecting the traveling speed of the tape to control the traveling speed of the tape, and the FG control mechanism further includes a low speed mode and a constant speed mode during reproduction, When fast-forwarding or rewinding the magnetic tape, the FG control step controls the tape running speed by winding the tape at a running speed that is a constant multiple of the tape running speed in the low speed mode and the constant speed mode. Including the step of winding
The CTL control step includes a step of winding the tape while controlling the rotation speed of the motor by stepwise switching the rotation speed of the motor to wind the tape, and at the time of fast-forwarding or rewinding the magnetic tape. Is
The tape is characterized in that the tape is slackened, the tape is wound at a low speed until the tape tension becomes constant, and then fast forward / rewind is performed at a high speed.

Further, as a device, in a tape winding device of a magnetic recording and reproducing device, a control mechanism switching means for switching between the FG control mechanism and the CTL control mechanism when fast-forwarding or rewinding a magnetic tape, and In the CTL control mechanism, a tape running speed switching means including a motor rotation speed switching control means for switching the rotation speed of the motor is provided. In addition to this,
It is more preferable that the tape running speed switching means includes a motor control means for dividing the tape acceleration for fast forward / rewind into two or more stages.

[0013]

In the tape winding device of the magnetic recording / reproducing apparatus of the present invention configured as described above, when the magnetic tape is fast forwarded or rewound, (1) in the FG control step, the low speed mode is used. And, by winding the magnetic tape at a running speed that is a constant multiple of the tape running speed in the constant speed mode, the magnetic tape is wound while the running speed of the tape is controlled. (2) In the CTL control step, By winding the tape by switching the rotation speed of the motor in stages, the magnetic tape is wound while the rotation speed of the motor is controlled.

Thus, when the magnetic tape is fast forwarded or rewound, the slack of the magnetic tape is removed, and the magnetic tape is wound at a low speed until the tape tension becomes constant, and then the magnetic tape is moved at a high speed. Fast forward / rewind is performed. Further, in the tape winding device of the magnetic recording / reproducing apparatus according to the present invention, when the magnetic tape is fast-forwarded or rewound, the control mechanism switching means of the tape running speed switching means and the FG control mechanism are connected to each other.
The TL control mechanism is switched, and the motor rotation speed switching control means of the tape running speed switching means switches the rotation speed of the motor while maintaining the CTL control.

Thus, when the magnetic tape is fast forwarded or rewound, the slack of the magnetic tape is removed, and the magnetic tape is wound at a low speed until the tape tension becomes constant, and then the magnetic tape is moved at a high speed. Fast forward / rewind is performed. In this way, before accelerating the tape fast forward / rewind, the tape is wound at a slower speed than in the conventional case, so it is possible to prevent a sudden increase in tape tension and reduce hunting of the tension regulator. It In addition, the tape regulator continues to operate at low speed until the tension regulator operates stably and the tape tension becomes constant, preventing a rapid increase in tape tension during subsequent acceleration and enabling stable fast-forward / rewind. Becomes That is, fast forward tape
When rewinding, the tape is accelerated in several steps after the low-speed winding operation, so the tape tension increases more smoothly than in the conventional sequence, reducing the hunting of the tension stabilizer and stabilizing the tape. Fast forward / rewind is possible.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a preferred embodiment of the present invention, showing a tape speed and a drive motor acceleration sequence at the time of starting fast-forwarding or rewinding.

The drive motor according to this embodiment is STOP,
It has FG and CTL servo modes, and in this embodiment, it has two stages among FG servos, that is, EP1.
There are two stages, double speed and SP5 double speed. The drive motor voltage (indicated as Motor-V in FIG. 1) also has two stages of 12V and 20V.

FIG. 2 is a system diagram of the present invention.

As shown in FIG. 2, the tape winding device of the magnetic recording / reproducing apparatus according to this embodiment has a controller 30, a control mechanism switching means 32 connected to the controller 30, and a motor drive voltage. Switching means (motor rotation speed switching control means) 34 and controller 30
Servo control means 36 connected to the drive motor 3
8, CTL control means 40, and FG control means 42. The tape winding device of the magnetic recording / reproducing apparatus according to the present embodiment is the tape tension stabilizing device 10.
Of course, it has a (tension regulator), but since it is the same as the conventional one,
It is omitted here.

In the tape winding device of the magnetic recording / reproducing apparatus according to the present embodiment constructed as described above, the drive motor 38 is controlled by the motor drive voltage switching means 34, the CTL control means 40 and the FG control means 42. The Rukoto.

When the drive motor 38 is FG controlled, the switch in the control mechanism switching means 32 is switched to the side 32a. Then, by detecting the rotating shaft of the magnetized drive motor 38, the rotation speed of the drive motor 38 is detected, and the rotation speed of the drive motor 38 is controlled based on the detected speed to install the drive motor 38 in the present apparatus. The running speed of the magnetic tape 20 is controlled. The rotational drive voltage of the drive motor 38 at this time is kept at 12 V, and in this state the EP1 speed is switched to the SP5 speed (parts and parts in FIG. 1). Further, when the drive motor 38 is CTL controlled, the switch is switched to the side 32b in the control mechanism switching means 32, and the traveling speed of the magnetic tape 20 is detected by detecting the CTL signal recorded on the magnetic tape 20. Is controlled. The rotational drive voltage of the drive motor 38 at this time is switched from 12V to 20V on the way by switching the switch installed in the motor drive voltage switching means 34 (part in FIG. 1). And part). Thus, finally, the magnetic tape 2
The running speed of 0 is increased to the maximum tape speed, that is, about 300 to 400 times the normal running speed.

FIG. 3 is a flow chart showing the operation of the tape winding device of the magnetic recording / reproducing apparatus according to this embodiment.

The operation of the tape winding device of the magnetic recording / reproducing apparatus according to this embodiment, which is shown in FIG. 1, will be described in detail with reference to FIG. In the start-up sequence, the FG
The control is switched to (S101), and the initial slack of the magnetic tape 20 is removed at the tape speed in the EP mode (S1).
02), the tension regulator is stabilized, and the magnetic tape 20 is wound at a constant speed until the tape tension becomes constant (S103). Then, in the next section, the running speed of the magnetic tape 20 is accelerated to 5 times the SP mode speed (S104), and here, similarly to the case of S103,
At this stage, the operation of the tension regulator becomes stable, and the magnetic tape 20 is wound at a constant speed until the tape tension becomes constant (S105). Further, in the section, the servo mode in the drive motor 38 is switched from the FG servo to the CTL servo (S106), and in the section, the rotation drive voltage of the drive motor 38 is switched from 12V to 20V by the motor drive voltage switching means 34. Then, the voltage of the drive motor 38 is increased to continue the acceleration up to the set tape maximum speed (S107).

In the sequence of the drive motor according to the present embodiment set in this way, the tape is wound at a lower speed than in the conventional case before the tape is fast forwarded / rewound and accelerated. It is possible to prevent a sharp increase and reduce the hunting of the tension regulator. Also, the operation of the tension regulator is stable,
Since the tape winding operation is continued at a low speed until the tape tension becomes constant, a rapid increase in the tape tension during the subsequent acceleration is prevented, and stable fast-forwarding / rewinding is possible.

In the above embodiment, the initial low-speed tape winding operation is set to the 1 × speed of the EP mode, but the same effect can be obtained even at other tape speeds.

Further, the sequence of dividing the tape speed acceleration into three steps, the servo mode at each step, and the tape speed are not limited to those in the above embodiment. It goes without saying that the same effect can be obtained even if the acceleration divided into three stages is made into four or more stages.

[0027]

Since the present invention is constructed as described above, when fast-forwarding and rewinding the tape, the tape is accelerated in several steps after the low-speed winding operation. However, hunting of the tension stabilizer is reduced, and stable fast-forwarding and rewinding can be performed.

[Brief description of drawings]

FIG. 1 is a diagram showing a sequence of a tape drive motor according to a preferred embodiment of the present invention.

FIG. 2 is a block diagram showing a functional configuration of a tape drive motor according to a preferred embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of the tape winding device of the magnetic recording / reproducing apparatus in the example.

FIG. 4 is a diagram showing a sequence of a conventional drive motor.

FIG. 5 is a diagram showing a configuration of a tape tension stabilizer (tension regulator).

FIG. 6 is a diagram showing a state of tape tension during hunting.

[Explanation of symbols]

10 Tape Tension Stabilizer (Tension Regulator) 20 Magnetic Tape 30 Controller 32 Control Mechanism Switching Means 34 Motor Drive Voltage Switching Means (Motor Rotation Speed Switching Control Means) 36 Servo Control Means 38 Drive Motor 40 CTL Control Means 42 FG Control Means

[Procedure amendment]

[Submission date] January 22, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction content]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape winding device of a magnetic recording / reproducing apparatus, and more particularly to a functional structure for preventing abrupt tension change of a tape in a tape winding device of a magnetic recording / reproducing apparatus.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art At present, a large number of magnetic recording / reproducing apparatuses have been commercialized for recording information by magnetizing a magnetic record carrier and reading and outputting information from the magnetic record carrier.
Some of these use a magnetic tape, which is made by applying a magnetic material on a thin film, as a magnetic record carrier. The tape winding of a magnetic recording / reproducing apparatus uses this magnetic tape as a magnetic record carrier. In the apparatus, the tape speed can be set so that the tape runs at a high speed in order to perform fast-forwarding and rewinding, in addition to the tape running speed when playing or recording. However, as described above, the traveling speed of the tape at the time of fast-forwarding and rewinding is high, and the magnetic tape is damaged due to the rapid speed change. Therefore, in order to prevent this, it is shown in FIG. Such a tape tension stabilizing device 10 is installed in the tape winding device to mechanically control the tape tension.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

The tape tension stabilizing device 10 includes an arm 11, a stop pin 13 installed on the arm 11, and a spring 15 for urging the arm 11 in a certain direction.
It consists of and. The stop pin 13 has a magnetic
The tape 20 can be hung on it.
M can be rotated in the direction of a or b around A part
It is supported. Also, tape B on the arm B
Reel disk that engages with the attached reel hub (not shown)
The outer periphery of the groove 17 can be contacted.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

In the tape tension stabilizing device 10 thus constructed, when the tape is mounted on the magnetic recording / reproducing apparatus, when the tape travels in the direction of c,
If the tape tension increases, arm 11
It rotates in the direction of a with the part as the center. Arm 1 at this time
The B part of 1 is displaced from the outer circumference of the reel disc 17.
The contact pressure becomes weaker as it moves in the direction
Since the disc 17 can rotate freely,
The tension will be weakened. On the contrary,
When the tension is reduced, the arm 11 is replaced by the spring 15
Thus, it rotates in the direction of b around the portion A. This and
The part B of the arm 11 is more
It will make a strong contact and the brake will be applied to the reel disc.
It takes. Therefore, the tape tension will increase.
Become. If the tape is running in the opposite direction, another
A similar device mounted on one reel disc
Control the options. In this way tape tension
Is controlled mechanically.

[Procedure Amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction content]

However, the movement of the arm 11 as described above is generally vibration. That is, when the running speed of the magnetic tape 20 suddenly changes, the tape tension increases momentarily, but immediately after that, the tape tension decreases due to the sudden relaxation action of the tape tension stabilizer 10. Become. However, tape tenacity
Tape tension changes due to rapid changes in the tape tension.
The action of the stabilizer 10 is also rapid, and the reel disc
, The brake comes off and the tape tension drops. That
Therefore, the tape tension stabilizing device 10 is re-installed
Will work to raise the option. In this way
By repeating the increase and decrease of the tape tension, the tape tension converges to a constant value. Then, during such a time until the tape tension converges to a constant value, that is, an unstable time of the tape running speed due to repeated increase and decrease of the tape tension, the running speed of the magnetic tape 20 changes rapidly. The longer the change, the greater the degree of instability in the above time, and the greater the change in the running speed of the magnetic tape 20. An example of such a state is shown in FIG. 5, and it can be seen that hunting occurs in the arm 11 of the tape tension stabilizer 10 in such a state.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

That is, the tape tension stabilizer for mechanically controlling the tape tension using a spring or the like is provided, and the FG control mechanism and the tape for controlling the rotation speed of the motor by detecting the rotation speed of the motor for running the tape. A CTL control mechanism for detecting the traveling speed of the tape to control the traveling speed of the tape, and the FG control mechanism further includes a low speed mode and a constant speed mode during reproduction, When fast-forwarding or rewinding the magnetic tape, the FG control step winds the tape at a running speed that is a constant multiple of the motor speed in the low speed mode and the constant speed mode to control the running speed of the motor. CT including the winding process
The L control step includes a step of winding the tape while controlling the rotation speed of the motor by switching the rotation speed of the motor stepwise and winding the tape. When the magnetic tape is fast forwarded or rewound. Is characterized in that the tape is slackened, and the tape is wound at a low speed until the tape tension becomes constant, and then fast forward / rewind is performed at a high speed.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

[0013]

In the tape winding device of the magnetic recording / reproducing apparatus of the present invention configured as described above, when the magnetic tape is fast forwarded or rewound, (1) in the FG control step, the low speed mode is used. And by winding the magnetic tape at a running speed that is a constant multiple of the motor running speed in the constant speed mode, the magnetic tape is taken up while the running speed of the motor is controlled. (2) In the CTL control step, By winding the tape by switching the rotation speed of the motor in stages, the magnetic tape is wound while the rotation speed of the motor is controlled.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

Further, the sequence of dividing the tape speed acceleration into three steps, the servo mode at each step, and the tape speed are not limited to those in the above embodiment. It goes without saying that the same effect can be obtained even if the acceleration divided into three stages is made into four or more stages. Also, regarding the rotation drive voltage of the drive motor,
However, it is not limited to the above embodiment.

[Procedure Amendment 10]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

Claims (3)

[Claims] 1. An FG control mechanism having a tape tension stabilizing device for mechanically relieving tape tension by using a spring or the like, for detecting the rotation speed of a motor for running a tape and controlling the rotation speed of the motor. In a tape winding device of a magnetic recording / reproducing apparatus, which comprises a CTL control mechanism for detecting the traveling speed of the tape and controlling the traveling speed of the tape, the FG control mechanism and the CTL when the magnetic tape is fast forwarded or rewound. A tape traveling speed switching means including a control mechanism switching means for switching a control mechanism and a motor rotation speed switching control means for switching the rotation speed of the motor in the CTL control mechanism is provided, and the magnetic tape is fast forwarded or rewound. When removing the tape, slacken the tape and tape it slowly until the tape tension becomes constant. The wound, then the tape winding apparatus of a magnetic recording and reproducing apparatus characterized by performing a fast forward-winding at high speed. 2. The tape winding device according to claim 1, wherein the tape traveling speed switching means further includes a motor control means for dividing acceleration of the fast forward / rewind tape into two or more stages. Tape take-up device for recording / playback device. 3. An FG control mechanism which has a tape tension stabilizing device for mechanically relieving the tape tension by using a spring or the like, and which detects the rotation speed of a motor for running the tape and controls the rotation speed of the motor. In a tape winding device for a magnetic recording / reproducing apparatus, a CTL control mechanism for detecting the traveling speed of the tape and controlling the traveling speed of the tape, wherein the FG control mechanism further has a low speed mode and a constant speed mode during reproduction. When fast-forwarding or rewinding a magnetic tape, first,
The tape is wound while the traveling speed of the tape is controlled by the FG control mechanism (FG control step), and then the C
The tape is wound while controlling the rotation speed of the motor by the TL control mechanism (CTL control step), and the FG control step is performed at a running speed that is a constant multiple of the tape running speed in the low speed mode and the constant speed mode. Winding the tape while controlling the running speed of the tape by winding the tape, and the CTL controlling step changes the rotation speed of the motor stepwise to wind the tape, thereby controlling the rotation speed of the motor. When fast-forwarding or rewinding the magnetic tape, including the process of winding the tape under control, slacken the tape, wind the tape at low speed until the tape tension becomes constant, and then fast-forward at high speed. A method of winding a tape in a magnetic recording / reproducing apparatus, which is characterized by performing rewinding.