JPH07130040A - Recording and/or reproducing device - Google Patents

Abstract

PURPOSE:To eliminate unuseless torque at the time of mode switching operation and to facilitate and accurately perform the mode switching operation by quickening the stoppage of a motor. CONSTITUTION:The feeding operation and the recording or reproducing operation of a recording medium in a mechanical part 4 are performed with forward driving by the motor 3, and the switch of the operation mode in the mechanical part 4 is performed with backward driving. A rotational direction control part 5 connected to a servo IC controlling the rotational direction and the rotational speed of the motor 3 controls a revolving speed control part 6 connected to the servo IC also, and the revolving speed of the motor 3 is made in lower speed rotation than forward rotation at the time of backward rotation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording and / or reproducing apparatus for recording and / or reproducing information signals on a recording medium while feeding the recording medium like a so-called tape recorder.

[0002]

2. Description of the Related Art Conventionally, in a recording and / or reproducing apparatus configured as a so-called tape recorder, a magnetic tape as a recording medium is fed and operated, and an information signal is written and / or read from the magnetic tape. A recording and / or reproducing mechanism and a mode switching mechanism for switching the operation mode of the recording and / or reproducing mechanism are provided.

The recording and / or reproducing mechanism is a feed operation mechanism for feeding and operating the magnetic tape, which has a pair of reel shafts on the supply side and the take-up side, a capstan shaft and a pinch roller, and An information signal is written and / or written on the magnetic tape supported by the feeding operation mechanism so that the magnetic tape can be moved in and out of the magnetic tape.
Alternatively, a magnetic head for reading is provided. The feeding operation mechanism of the recording and / or reproducing mechanism performs the feeding operation of the magnetic tape by transmitting the driving force of the motor.

The mode switching mechanism controls the positions of the gear and the magnetic head constituting the feed operation mechanism of the recording and / or reproducing mechanism to switch the operation mode of the recording and / or reproducing mechanism. I do.

That is, in this mode switching mechanism, the mode in which the driving force of the motor is transmitted to the take-up reel shaft by moving the gear, and the driving force is transmitted to the supply reel shaft. Switch to the mode. Modes in which the driving force of the motor is transmitted to the take-up side reel shaft include a forward (forward) reproduction mode, a forward recording mode, a forward music selection mode, and a fast-forward mode. The modes in which the driving force of the motor is transmitted to the reel shaft on the supply side include a reverse (reverse direction) reproduction mode, a reverse recording mode, a reverse music selection mode, and a rewind mode.

Further, the mode switching mechanism is divided into a mode in which the magnetic head is advanced to the magnetic tape side to bring the magnetic head into sliding contact with the magnetic tape, and a mode in which the magnetic head is separated from the magnetic tape. Switch. Modes in which the magnetic head slides on the magnetic tape include forward and reverse reproduction modes, forward and reverse recording modes, and forward and reverse song selection modes. The mode in which the magnetic head is separated from the magnetic tape includes a fast-forward mode and a rewind mode.

As the mode switching mechanism, there is one configured to switch the operation mode of the recording and / or reproducing mechanism as described above by using the driving force of the motor. That is, this mode switching mechanism has a gear that constitutes the recording and / or reproducing mechanism and a cam gear for moving and operating the magnetic head. By rotating this cam gear, the gear and the The operation of switching the operation mode is performed by moving the magnetic head.

In the recording and / or reproducing apparatus having such a mode switching mechanism, the state in which the driving force of the motor is transmitted to the recording and / or reproducing mechanism and the driving force of the motor are transmitted to the mode switching mechanism. A driving force transmission switching mechanism that switches between the transmission state and the transmission state is provided. That is, the driving force transmission switching mechanism enables the recording and / or reproducing mechanism to record and / or reproduce the information signal by transmitting the driving force of the motor to the recording and / or reproducing mechanism.
Further, by transmitting the driving force of the motor to the mode switching mechanism, the operation mode can be switched by the mode switching mechanism.

As the driving force transmission switching mechanism, there is one that switches the transmission route of the driving force of the motor according to the rotational driving direction of the motor. That is, the drive force transmission switching mechanism is supported by the first transmission gear that is rotated in the forward or reverse direction by the motor and the base end side of the first transmission gear so as to be coaxial with the first transmission gear. A rotating arm that is rotated by the rotational force of the first transmission gear, and a second transmission gear that is rotatably disposed on the tip end side of the rotating arm and that meshes with the first transmission gear. Is configured. The second transmission gear is selected as either a gear for rotating the reel shafts or a cam gear for switching the operation modes depending on the rotating direction of the rotating arm. Meshed together. Therefore, in the recording and / or reproducing apparatus having such a driving force transmission mechanism, the recording and / or reproducing mechanism is driven by rotating the motor in the forward rotation direction, and the motor is rotated in the reverse rotation direction. By rotating and driving, the mode switching mechanism is driven.

[0010]

By the way, in the recording and / or reproducing apparatus having the driving force transmission switching mechanism for switching the transmission route of the driving force of the motor according to the rotational driving direction of the motor as described above, The motor is rotationally driven at the same rotational speed of, for example, about 2000 rpm when it is rotationally driven in the forward rotation direction and when it is rotationally driven in the reverse rotation direction.

The rotation speed of the motor is such that when the motor drives the recording and / or reproducing mechanism,
Since the required torque is large and the reduction ratio is large,
For example, the speed needs to be as high as 2000 rpm. However, the rotation speed of this motor is about 2000 rpm when the motor drives the mode switching mechanism, because the required torque is smaller than when the recording and / or reproducing mechanism is driven. It doesn't have to be fast. Therefore, when the motor drives the mode switching mechanism,
This motor is rotating at a higher speed than is necessary, and wastes electric power.

Further, when the motor drives the mode switching mechanism, the motor is rotationally driven at a higher speed than necessary, which means that the cam gear is stopped at a predetermined angular position for selecting a desired operation mode. Since it is difficult to control the rotation of the motor, it is necessary to perform strong control such as electromagnetic brake control.

Further, when the motor drives the mode switching mechanism, the motor is rotationally driven at a higher speed than necessary, as shown in FIG. The time required to reach the high speed rotation speed ( _SH ) of the motor and to stop the motor from the start of the stop control is as shown by arrows t ₂ and t ₃ in FIG. When the speed is the low rotation speed (S _L ), it becomes longer than the times shown by the arrows t ₁ and t ₄ in FIG. 12, respectively. Therefore, when the motor is rotating at a high speed, the mode switching mechanism is driven by the motor to select and switch the operation mode from the state where the recording and / or reproducing mechanism is driven by the motor. The time required to return to the state in which the recording and / or reproducing mechanism is driven by the motor after the state in which the operation is performed is longer than that in the case where the motor is rotated at a low speed.

Therefore, the present invention is proposed in view of the above-mentioned circumstances, and a state in which the recording and / or reproducing mechanism is driven and a mode in which the mode switching mechanism is driven are selected by selecting the rotational driving direction of the motor. Is a recording and / or reproducing apparatus configured to be switched, and wasteful power consumption in the motor is suppressed, control of rotational driving of the motor is facilitated, and further, the mode switching mechanism described above. SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording and / or reproducing apparatus in which the speed of returning to the state in which the recording and / or reproducing mechanism is driven after the drive of the recording medium and the switching of the operation mode is accelerated is achieved.

[0015]

In order to solve the above problems and achieve the above objects, a recording and / or reproducing apparatus according to the present invention feeds and operates a recording medium and writes an information signal to the recording medium. A recording and / or reproducing mechanism for reading and / or reading, a mode switching mechanism for switching the operation mode of the recording and / or reproducing mechanism, a motor capable of rotational driving in forward and reverse directions, and rotational driving of this motor. A driving force transmission switching mechanism for selectively transmitting the driving force of the motor to any one of the recording and / or reproducing mechanism and the mode switching mechanism according to the direction;
A control means for controlling a rotational drive direction and a rotational speed of the motor, wherein the control means causes the drive force transmission switching mechanism to transmit the drive force of the motor to the mode switching mechanism in the rotational drive direction of the motor. When the rotation direction is different from that when the rotation driving direction of the motor is the rotation direction in which the driving force transmission switching mechanism transmits the driving force of the motor to the recording and / or reproducing mechanism, The rotation speed of the motor is low.

According to the present invention, in the above-mentioned recording and / or reproducing apparatus, the control means is connected to a servo circuit section to which a motor is connected, and is connected to the servo circuit section to switch the rotational driving direction of the motor. A direction control unit and a speed control unit that is connected to the servo circuit and sets a rotation speed of the motor are provided. The direction control unit controls the speed control unit to control the rotation speed of the motor. The speed is set to correspond to the rotational driving direction of.

[0017]

In the recording and / or reproducing apparatus according to the present invention, the control means for controlling the rotation driving direction and the rotation speed of the motor capable of rotating in the forward and reverse directions has the driving force transmission switching mechanism of the motor. When the driving force is transmitted to the mode switching mechanism, the rotation speed of the motor is set lower than when the driving force transmission switching mechanism transmits the driving force of the motor to the recording and / or reproducing mechanism. The operation of selecting the operation mode in the recording and / or reproducing mechanism by the switching mechanism can be performed easily, reliably, and promptly, and wasteful power consumption can be saved.

In the above recording and / or reproducing apparatus, the control means includes a servo circuit section to which the motor is connected and a direction control section which is connected to the servo circuit section and switches the rotational driving direction of the motor. A speed control unit connected to the servo circuit for setting the rotation speed of the motor, wherein the direction control unit controls the speed control unit to change the rotation speed of the motor to a rotational driving direction of the motor. When the speed corresponding to the above is set, the rotation speed of the motor is surely set to the speed corresponding to the rotational driving direction of the motor.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. This example is a record according to the invention and / or
Alternatively, the reproducing apparatus is an example configured as a so-called tape recorder apparatus that uses a magnetic tape housed in a tape cassette as a recording medium and records and / or reproduces an information signal with respect to the magnetic tape via a magnetic head. . In this tape recorder, the forward playback mode (forward play mode (FWD)), the backward playback mode (reverse play mode (REV)), the fast forward mode (FF), the rewind mode (REW) is operated via the operation unit. , And execution of the stop mode (STOP) can be instructed.

As shown in FIG. 1, this tape recorder device comprises a servo circuit section (servo IC (integrated circuit)) 1, a direction control section (rotation direction control) 5, and a speed control section (rotation speed control) 6. A motor control circuit that serves as control means, and a motor 3 that is driven by the motor control circuit to rotate.
It is configured to have a mechanism section 4 driven by the motor 3. The motor control circuit is controlled by a signal processing device (computer circuit) (not shown) according to the operation of the operation section and the state of the mechanism section 4.

The servo circuit section 1 is operated by being supplied with the power supply V _CC through the power supply terminal 2. The direction control unit 5
Controls the servo circuit unit 1 to instruct the rotation driving direction of the motor 3. The speed control unit 6
Controls the servo circuit unit 1 to instruct the rotation speed of the motor 3. Then, the direction control unit 5 controls the speed control unit 6 so that the rotation speed of the motor 3 is controlled according to the rotational driving direction of the motor 3.

The motor 3 has its rotation direction and rotation speed controlled by the motor control circuit, and is driven to rotate in the rotation direction and rotation speed according to this control.

The mechanical unit 4 feeds and operates a magnetic tape serving as a recording medium of the recording and / or reproducing apparatus, and causes the magnetic head to write and / or read information signals to and from the magnetic tape. A reproducing mechanism, a mode switching mechanism for switching the operation mode of the recording and / or reproducing mechanism, and a driving force of the motor 3 are selectively transmitted to the recording and / or reproducing mechanism or the mode switching mechanism. And a driving force transmission switching mechanism.

As shown in FIGS. 2 and 3, the mechanism section 4 has a driven pulley 10 which is rotated by the driving force of the motor 3. The driven pulley 10 is rotatably supported on the chassis 7 of the tape recorder device via a support shaft 12. The driven pulley 10 has a drive pulley 8 attached to the drive shaft 3 a of the motor 3.
The endless drive belt 9 is looped between and. The driven pulley 10 is rotationally operated in a rotation direction and a rotation speed corresponding to the rotation driving direction and the rotation speed of the motor 3.

A first transmission gear 11 is coaxially and integrally attached to the driven pulley 10. A support shaft 12 supporting the driven pulley 10 is rotatably attached to a base end side of a rotating arm 13 which constitutes the driving force transmission switching mechanism. A friction member for transmitting the rotation of the driven pulley 10 to the rotating arm 13 is interposed between the rotating arm 13 and the driven pulley 10. That is, the rotating arm 1
3 is rotated in a direction corresponding to the rotation direction of the driven pulley 10. A second transmission gear 14 is rotatably attached to the tip end side of the rotating arm 13 via a support shaft 15. The second transmission gear 14 meshes with the first transmission gear 11. That is, the second transmission gear 14 is moved and operated by the rotation of the rotation arm 13 according to the rotation direction of the driven pulley 10, and is also rotated in the direction opposite to the rotation direction of the driven pulley 10. To be done.

Then, the drive unit 4 causes the recording and / or recording.
Alternatively, it has a pair of supply-side and take-up-side reel shafts 19 and 21 constituting a reproducing mechanism. The reel shafts 19 and 21 are rotatably supported by the chassis 7 and are inserted into and engaged with a pair of reel hubs of the tape cassette mounted on the chassis 7. A supply-side reel gear 18 is integrally attached to the supply-side reel shaft 19. A take-up reel gear 20 is integrally attached to the take-up reel shaft 21.

An FR slider 24, which constitutes the mode switching mechanism, is disposed on the chassis 7 slidably in the direction between the reel shafts 19 and 21. A third transmission gear 16 which constitutes the recording and / or reproducing mechanism is rotatably mounted on the FR slider 24 via a support shaft 17. A fourth transmission gear 22 meshed with the third transmission gear 16 is rotatably mounted on the FR slider 24 via a support shaft 23. This FR slider 24
The F position where the third transmission gear 16 shown in FIG. 3 is separated from the supply-side reel gear 18 and the fourth transmission gear 22 meshes with the take-up reel gear 20, and the third transmission shown in FIG. The gear 16 is slid to an R position where it meshes with the supply-side reel gear 18 and the fourth transmission gear 22 separates from the take-up reel gear 20.

The FR slider 24 corresponds to the chassis 7
A cam gear 26, which is rotatably disposed on a support shaft 28 and constitutes the mode switching mechanism, slides the F gear from the F position to the R position. The cam gear 26 is formed in a disk shape having an outer peripheral edge portion serving as a gear portion, and has a cam groove 27 in the main surface portion. This cam groove 27
Is the copy pin 25 implanted in the FR slider 24.
Are engaged with each other. When the cam gear 26 is rotationally operated to a predetermined angular position, the cam groove 27 causes the FR slider 2 to move through the copying pin 25.
Slide 4 to a predetermined position. This cam gear 26
As shown in FIG. 6, the cam groove 27 is formed in an annular shape composed of a plurality of arc-shaped portions having different distances (radii) from the support shaft 28. As shown in FIG. 7, each of these arc-shaped portions has the FR slider (mode switching lever) 2 in the forward reproduction mode, reverse reproduction mode, fast-forward mode, and rewind mode.
It corresponds to the slide position of 4.

In this mechanism section 4, when the motor 3 is rotationally driven in the forward direction indicated by the arrow A in FIG. 2, the rotary arm 13 is moved by the first arm as indicated by the arrow C in FIG. The second transmission gear 14 meshes with the third transmission gear 16 by being rotated to the side of the third transmission gear 16. At this time, if the FR slider 24 is in the F position, the rotation of the second transmission gear 14 is rotated through the third and fourth transmission gears 16 and 22 and the take-up reel gear 20. Be transmitted to. Then, the reel hub fitted to the take-up side reel shaft 21 is rotated, and the reel hub winds the magnetic tape. At this time, the FR slider 24
Is set to the R position, the rotation of the second transmission gear 14 is prevented from rotating as shown in FIG.
It is transmitted to the supply side reel gear 18 via 6. Then, the reel hub fitted to the take-up side reel shaft 19 is rotated, and the reel hub winds the magnetic tape.

In the mechanism section 4, when the motor 3 is rotationally driven in the reverse direction indicated by the arrow F in FIG. 3, the rotating arm 13 is moved in the direction indicated by the arrow H in FIG. The cam gear 26 is rotated to the side of the second gear.
The transmission gear 14 of is meshed with the gear portion of the cam gear 26. Therefore, the rotation of the second transmission gear 14 is transmitted to the cam gear 26, and the cam gear 26 is rotated as indicated by an arrow J in FIG. At this time, the FR slider 24
Is operated to slide to a predetermined slide position according to the rotational angular position of the cam gear 26, thereby switching the operation mode in the recording and / or reproducing mechanism.

As shown in FIGS. 4 and 5, the FR slider 24 has a pair of support slits 30 and 32, and a pair of support slits 30 and 32 are planted in the chassis 7. It is slidably supported with respect to the chassis 7 by inserting the pins 29 and 31. Further, the FR slider 24 is provided with a position detector 33 arranged on the chassis 7 so that the detected portion 35 is
Is detected and the slide position is detected. The position of the FR slider 24 detected by the position detector 33 is sent to a signal processing circuit that controls the motor control circuit.

The magnetic head and a pair of pinch rollers (not shown) for forward and reverse are supported by a support plate 50 attached to the chassis 7 so as to be slidable and rotatable. This support plate 50
Is operated to the side of the FR slider 24 when the execution of the forward reproduction mode or the reverse reproduction mode is instructed. The support plate 50 moved to the side of the FR slider 24 has either one of the shoulder portions 45 and 47 of the abutting portions 44 and 46 of the FR slider 24 depending on the sliding position of the FR slider 24. By abutting against the corresponding side, it is rotated and one of the pinch rollers is moved into the tape cassette.
The support plate 50 moved to the FR slider 24 side causes the magnetic head to enter the tape cassette. When the magnetic head and the pinch roller are inserted into the tape cassette, the reproduction mode in the forward direction or the reverse direction is executed.

Incidentally, in the recording and / or reproducing mechanism shown in FIGS. 4 and 5, the third and fourth transmission gears 16 and 22 are not provided on the FR slider 24, but are respectively described above. The rotary plate 38 is rotatably supported by the chassis 7 and is provided on the chassis 7.
The fourth transmission gear 22 meshes with the take-up reel gear 20. The rotating plate 38 is the FR.
The third transmission gear 16 is selectively engaged with the fourth transmission gear 22 or the supply-side reel gear 18 by being rotated by the slide of the slider 24.

As shown in FIG. 8, the servo circuit section 1 constituting the motor control circuit is constructed as one integrated circuit chip and has 24 terminals 1 to 24. Predetermined electronic elements forming the direction control unit 5 and the speed control unit 6 are connected to the servo circuit unit 1, and a starting terminal (S) connected to the signal processing circuit is connected.
TART), direction control terminal (DR) and stop terminal (BR
AKE) and the output terminal (U,
V, W, and COM) are connected to the power supply terminal (+ 3V) and the ground terminal (GND).

The motor 3 is a three-phase motor,
It is configured to have three control lines U, V, W and a power supply line (COM). The first control line U is connected to the 22nd terminal (U) of the servo circuit unit 1. The second control line V is connected to the second terminal (V) of the servo circuit section 1. The third control line W is connected to the servo circuit section 1 described above.
No. 5 terminal (W). The power supply line (COM) is connected to the power supply terminal (+ 3V).

No. 1 terminal (GND) of the servo circuit section 1
Is connected to the ground terminal (GND). The third terminal (PW) and the fourth terminal (DW) are connected to each other via the fifth capacitor C ₅ .

The 6th terminal (DR) is set to the "L" level (ground level) so that the servo circuit section 1 instructs the normal rotation as the rotation direction of the motor 3, and the "H" level (+ 3V). By doing so, the servo circuit unit 1 is a terminal for instructing reverse rotation as the rotation direction of the motor 3. This 6th terminal is connected to the direction control terminal (DR), is also connected to the ground terminal (GND) via a _fifth resistor R ₅ , and is also connected to a sixth resistor R ₆ via a _sixth resistor R ₆ . 1 is connected to the base terminal of the transistor TR ₁ . The first transistor TR ₁ is an NPN type transistor.

The seventh terminal (VREF) has a reference voltage (1.
5V), which is a terminal for outputting the first and second variable resistors VR ₁ and VR ₂ connected in series,
It is connected to the ground terminal (GND). That is,
Each of the variable resistors VR ₁ and VR ₂ outputs a voltage obtained by dividing the reference voltage whose voltage value is adjustable. The collector terminal of the first transistor TR ₁ is connected between the first and second variable resistors VR ₁ and VR ₂ , that is, to the 7th terminal via the _first variable resistor VR _1. It is connected and is also connected to the ground terminal (GND) via the _second variable resistor VR ₂ . The emitter terminal of the first transistor TR ₁ is connected to the ground terminal (GND) and the output terminal of the _second variable resistor VR ₂ .

The output terminal of the first variable resistor VR ₁ is 1
It is connected to the 0th terminal (IN +). The servo circuit unit 1 controls the rotation speed of the motor 3 according to the voltage applied to the tenth terminal (IN +).

The 8th terminal (START) is a terminal for instructing the start of rotational drive of the motor 3 by the servo circuit section 1 when it is set to "H" level. The 8th terminal is connected to the starting terminal (START) and also connected to the ground terminal (GND) via the fourth resistor R _4.
It is connected to the.

The 9th terminal (VSP) is connected to the 11th terminal (OUT) via the third resistor R ₃ and the sixth capacitor C ₆ which are connected in parallel with each other.

The 12th terminal (GND) is connected to the ground terminal (GND).

The 13th terminal (RI) is connected to the ground terminal (GND) via the first resistor R ₁ .

The 17th terminal (OSC) is connected to the ground terminal (GND) via the second capacitor C ₂ .

The 18th terminal (COM) is connected to the second resistor R ₂
Through the power supply terminal (+ 3V) and the power supply line (COM) of the motor 3.

The 19th terminal (V _CC ) is the power supply terminal (+
3 V) and is also connected to the ground terminal (GND) via the first capacitor C ₁ .

The 20th terminal (PU) is connected to the 21st terminal (DU) through the fourth capacitor C ₄ .

The 23rd terminal (PV) is connected to the 24th terminal (DV) through the third capacitor C ₃ .

The collector terminal of a _second transistor (PNP type) TR ₂ which is a braking transistor is connected to the first control line U of the motor 3.
The emitter terminal of the second transistor TR ₂ is connected to the power supply terminal (+ 3V). The base terminal of the second transistor TR ₂ is connected to the collector terminal of the fifth transistor (NPN type) TR ₅ via the seventh resistor R ₇ .

The second control line V of the motor 3 is connected to a third transistor (PNP) which is a braking transistor.
Type) TR ₃ collector terminal is connected. This third
The emitter terminal of the transistor TR ₃ is connected to the power supply terminal (+ 3V). The base terminal of the third transistor TR ₃ is connected to the collector terminal of the fifth transistor TR ₅ via the eighth resistor R ₈ .

The third control line W of the motor 3 has a fourth transistor (PNP) which is a braking transistor.
Type) TR ₄ collector terminal is connected. This 4th
The emitter terminal of the transistor TR ₄ is connected to the power supply terminal (+ 3V). The base terminal of the fourth transistor TR ₄ is connected to the collector terminal of the fifth transistor TR ₅ via the ninth resistor R ₉ .

The fifth transistor TR ₅ has a base terminal connected to the stop terminal (BRAKE) and an emitter terminal connected to the ground terminal (GND).

In the motor control circuit configured as described above, the servo circuit section 1 causes the signal processing circuit to set the eighth terminal (START) to the "H" level, thereby causing the motor 3 to operate. The rotation drive of is started. Then, the servo circuit section 1 sets the sixth terminal (DR) to the “L” level by the signal processing circuit, thereby setting the rotation direction of the motor 3 to the normal rotation direction, and the sixth terminal By setting (DR) to the “H” level, the rotation direction of the motor 3 is set to the reverse rotation direction.

When the 6th terminal (DR) is set to "L" level, the emitter terminal and collector terminal of the first transistor TR ₁ are cut off, and the 10th terminal (IN +) is connected to the 10th terminal (IN +). , The first and second variable resistors VR
_A voltage obtained by dividing the reference voltage by ₁ and VR ₂ is applied. Therefore, at this time, each of the variable resistors VR ₁ , V
By adjusting R ₂ , the rotation speed of the motor 3 in the forward rotation direction can be adjusted.

When the 6th terminal (DR) is set to the "H" level, the emitter terminal and the collector terminal of the first transistor TR ₁ become conductive, and the 10th terminal (IN +) is connected to the 10th terminal (IN +). A voltage obtained by dividing the reference voltage is applied only by the first variable resistor VR ₁ . Therefore, the potential of the 10th terminal (IN +) becomes lower than that when the 6th terminal (DR) is at the “L” level, and the motor 3 has a higher potential than when it is rotationally driven in the forward direction. Then, it is rotationally driven in the reverse rotation direction at a low speed. At this time, the rotation speed of the motor 3 in the reverse rotation direction can be adjusted by adjusting the variable resistor VR ₁ .

As shown in FIG. 12, the rotation speed of the motor 3 is, for example, 2000r when it is in the normal rotation direction.
At a high speed S _H of about pm and a low speed S _L of about 500 rpm when in the reverse rotation direction.

That is, in this tape recorder device, the relationship between the rotational driving direction of the motor 3 and the rotational speed and the object driven by the driving force of the motor 3 is as shown in the following [Table 1]. ing.

[0058]

[Table 1]

The servo circuit section 1 causes the signal processing circuit to set the eighth terminal (START) to the "L" level, thereby ending the rotational driving of the motor 3. In this state, the motor 3 continues to rotate due to inertia, but when the base terminal of the fifth transistor TR ₅ is set to the “H” level via the stop terminal (BRAKE), the stop control ( Braking).
That is, when the base terminal of the fifth transistor TR ₅ is set to the “H” level, the second to fourth transistors TR ₂ , TR ₃ which are braking transistors,
The emitter terminal and collector terminal of TR ₄ are electrically connected to each other, and the control lines U, V, and W are connected to the power supply terminal (+ 3V), respectively, so that they have the same potential, and the motor 3 is Stop controlled.

As described above, in this motor control circuit, since the rotational speed when it is rotationally driven in the reverse direction is the low speed S _L , the operation mode selection in the recording and / or reproducing mechanism by the mode switching mechanism is selected. The operation can be performed easily, surely, and quickly, and unnecessary power consumption can be saved.

That is, in this motor control circuit, when the motor 3 drives the mode switching mechanism, the motor 3 is not rotationally driven at a higher speed than necessary. As shown by arrows t ₁ and t ₄ in FIG. 12, the time required for the rotation speed to reach a predetermined low speed S _L and for the motor to be stopped from the start of the stop control is shown in FIG. It becomes shorter than the times indicated by the arrows t ₂ and t ₃ in FIG. 12 when the rotation speed is the high speed S _H.

Therefore, in this tape recorder device, the mode switching mechanism is driven by the motor 3 to select and switch the operation mode from the state where the recording and / or reproducing mechanism is driven by the motor 3. The time required for returning to the state in which the recording and / or reproducing mechanism is driven by the motor 3 again after the state of performing is performed at the high speed S _H when the motor 3 is rotationally driven in the reverse direction. It is shorter than when driven.

The motor control circuit in the recording and / or reproducing apparatus according to the present invention is not limited to the above-mentioned example,
As shown in FIG. 9, the direction control unit 5 and the speed control unit 6 are provided.
As an alternative, instead of the first transistor TR ₁ , a circuit having an analog switch S ₁ may be used. That is, in this motor control circuit, the sixth terminal (DR) of the servo circuit unit 1 is the tenth terminal.
It is connected via a resistor R ₁₀ in the above direction control terminal (DR), 11 is grounded via the resistor R _11, and further, the analog switches S ₁ through the twelfth resistor R ₁₂ of
It is connected to the control terminal of. 7th terminal (VRE
F) is grounded via fourth and third variable resistors VR ₄ and VR ₃ which are connected in series with each other. The output terminal of the fourth variable resistor VR ₄ is the 10th terminal (IN +).
It is connected to the. Then, the analog switch S ₁
Is connected in parallel to the _third variable resistor VR ₃ so that the both ends of the third variable resistor VR ₃ can be electrically connected.

In this motor control circuit, when the direction control terminal (DR) is at the "L" level, the servo circuit section 1 indicates the forward rotation direction as the rotational driving direction of the motor 3 and the analog signal is output. Switch S ₁
Has been cut off. Therefore, the potential of the 10th terminal (IN +) is the potential obtained by dividing the reference voltage by the fourth and third variable resistors VR ₄ and VR ₃ . In this motor control circuit, when the direction control terminal (DR) is set to the "H" level, the servo circuit unit 1 instructs the reverse rotation direction as the rotation driving direction of the motor 3 and the analog switch. S ₁ is made conductive. Then, the 10th terminal (IN
The potential of +) is the same as the reference voltage and the fourth variable resistor VR.
_The potential is divided only by ₄ and the direction control terminal (D
R) becomes lower than when it was at "L" level. In this way, in this motor control circuit, the rotational speed of the motor 3 during rotational driving in the reverse rotation direction is lower than the rotational speed of the motor 3 during rotational driving in the normal rotation direction.

Further, in the recording and / or reproducing apparatus according to the present invention, when a direct current (DC) motor is used as the motor, it has a pair of servo circuit portions 1a and 1b as shown in FIG. A motor control circuit configured as described above can be used. The servo circuits 1a and 1b are supplied with a power supply (+ 3V) to supply a drive current to the connected DC motor 3a to drive the DC motor 3a to rotate. These servo circuits 1a and 1b
Is configured to control the rotation speed of the DC motor 3a by controlling the current value of the drive current.

This motor control circuit has a direction control terminal (D
R). This direction control terminal (DR) has a first
Through a third resistor R ₁₃ sixth transistor TR ₆ (NP of
N type) base terminal and a seventh transistor TR ₇ (NPN type) via a _fifteenth resistor R _15.
Is connected to the base terminal of the tenth transistor TR ₁₀ (NPN type) via the eighteenth resistor R ₁₈ . The sixth transistor TR
₆ , the emitter terminal is grounded, and the collector terminal is connected to the power supply (+ 3V) via the fourteenth resistor R ₁₄ . The collector terminal of the sixth transistor TR ₆ is connected to the base terminal of the eighth transistor TR ₈ (NPN type) via the 16th resistor R ₁₆ and also via the 17th resistor R ₁₇ . And the ninth transistor T
It is connected to the base terminal of R ₉ (NPN type).

The collector terminal of the seventh transistor TR ₇ is connected to the power source (+3 V), and the emitter terminal of the seventh transistor TR ₇ is one servo circuit section (servo A) 1
It is connected to the power supply terminal of a. The ninth transistor TR ₉ has a collector terminal connected to the power supply (+ 3V) and an emitter terminal connected to the power supply terminal of the other servo circuit section (servo B) 1b.

The current output terminal of the one servo circuit section 1a is connected to one terminal of the DC motor 3a and also to the collector terminal of the eighth transistor TR ₈ . The emitter terminal of the eighth transistor TR ₈ is grounded. The current output terminal of the other servo circuit section 1b is connected to the other terminal of the DC motor 3a and also to the collector terminal of the tenth transistor TR ₁₀ . The emitter terminal of the tenth transistor TR ₁₀ is grounded.

In the motor control circuit shown in FIG. 10, when the direction control terminal (DR) is set to "H" level, the collector terminal and the emitter terminal of the sixth transistor TR ₆ become conductive. , The collector and emitter terminals of the eighth and ninth transistors TR ₈ and TR ₉ are cut off, and the collector and emitter terminals of the seventh and tenth transistors TR ₇ and TR ₁₀ are cut off. And are electrically connected to each other.

Therefore, when the direction control terminal (DR) is at "H" level, the DC motor 3a operates as follows.
A drive current is supplied to one terminal through the seventh transistor TR ₇ and the one servo circuit unit 1a,
The other terminal is grounded through the tenth transistor TR ₁₀ . At this time, the DC motor 3a is rotationally driven in one rotation direction (forward rotation direction) by being supplied with a drive current from the one terminal. The rotation speed of the DC motor 3a at this time is a speed controlled by the one servo circuit unit 1a, and is, for example, 2
It is about 000 rpm.

In this motor control circuit, when the direction control terminal (DR) is set to the "L" level, the collector terminal and the emitter terminal of the sixth transistor TR ₆ are cut off. The collector and emitter terminals of the eighth and ninth transistors TR ₈ and TR ₉ are brought into conduction with each other, and the collector and emitter terminals of the seventh and tenth transistors TR ₇ and TR ₁₀ are connected. The spaces are cut off.

Therefore, when the direction control terminal (DR) is at "L" level, the DC motor 3a operates as follows.
A drive current is supplied to the other terminal through the ninth transistor TR ₉ and the other servo circuit section 1b,
One terminal is grounded via the eighth transistor TR ₈ . At this time, the DC motor 3a is rotationally driven in the other rotation direction (reverse rotation direction) by being supplied with a drive current from the other terminal. At this time, the rotation speed of the DC motor 3a is the same as that of the other servo circuit unit 1
The speed is controlled by b, for example, 50
It is about 0 rpm.

In this way, in this motor control circuit, the rotational drive direction of the DC motor 3a can be controlled through the direction control terminal (DR), and the rotational speed of the DC motor 3a can be controlled by the rotational speed. The speed corresponds to the driving direction.

The motor control circuit in the recording and / or reproducing apparatus according to the present invention, as shown in FIG.
It is also possible to use the servo circuit unit 1c configured as one integrated circuit chip and having 30 terminals 1 to 30. The servo circuit unit 1c is connected to predetermined electronic elements forming the direction control unit 5 and the speed control unit 6, and is connected to the signal processing circuit as a start terminal (START) and a direction control terminal ( DR) and output terminals (U, V, W, CO) to which the motor 3 is connected.
M) is connected to a battery 53 having a power supply terminal (+ V _CC ) and a ground terminal (GND).

The motor 3 is a three-phase motor,
It is configured to have three control lines U, V, W and a power supply line (COM). The first control line U is the 13th terminal (U) and 10th terminal (U _IN ) of the servo circuit section 1c.
It is connected to the. The second control line V is connected to the 15th terminal (V) and 9th terminal (V _IN ) of the servo circuit unit 1c. The third control line W is connected to the servo circuit section 1c.
No. 17 terminal (W) and No. 25 terminal (W _IN ). The power supply line (COM) is controlled by the power supply terminal (+ V _CC ), one terminal of the second analog switch S ₂ controlled by the start-up terminal (START), and the direction control terminal (DR). The third analog switch S ₃ is connected to one terminal thereof.

The first terminal (STA) of the servo circuit section 1c
RT) is connected to the other terminal of the _second analog switch S ₂ . This 1st terminal (START)
The servo circuit unit 1 is set to the “H” level
Reference numeral c is a terminal for instructing the start of rotational driving of the motor 3.

[0077] Pin 2 (VI over IN) is connected to the ground terminal (GND) through a capacitor C ₁₃ of the resistor R ₂₃ and the 13 of the 23, resistor R ₂₃ of said 23
And the 29th terminal (PULS) via the 22nd resistor R _22.
E).

No. 3 terminal (VI-IN) and No. 4 terminal (IV
-OUT) are connected to each other via the 24th resistor R ₂₄ and the 11th capacitor C ₁₁ which are connected in parallel.

The fifth terminal (V _CC ) is connected to the power supply terminal (+ V _CC ) via the 25th resistor R ₂₅ , and the 11th transistor TR is connected via the 19th resistor R _19.
11 (NPN type) connected to the collector terminal. The base terminal of the eleventh transistor TR ₁₁ is connected to the 27th terminal (REV) and the other terminal of the _third analog switch S ₃ via the twentieth resistor R ₂₀ .
The emitter terminal of the eleventh transistor TR ₁₁ is connected to the 28th terminal (VREF) via the eighth capacitor C ₈ and the twelfth transistor TR ₁₂ (N
(PN type) base terminal.

The 27th terminal (REV) is set to "L" level (ground level) so that the servo circuit section 1c instructs the normal rotation as the rotation direction of the motor 3,
This is a terminal for instructing reverse rotation as the rotation direction of the motor 3 when the servo circuit section 1c is set to "H" level (+ V _CC ). The 28th terminal (VREF) is a terminal for outputting a reference voltage.

The sixth terminal (COM) is the ground terminal (G
ND).

The 7th terminal (BUFF-OUT) and the 8th terminal (BUFF-IN) are connected to each other, and are connected to the ground terminal (GND) via the twelfth capacitor C ₁₂ .

12th terminal (PGND), 14th terminal (P
GND), 16th terminal (PGND), 19th terminal (PG
The ND) and the 20th terminal (GND) are connected to the ground terminal (GND), respectively.

The 23rd terminal (CSOFT2) and the 24th terminal (CSOFT1) are connected to each other via the tenth capacitor C ₁₀ .

The 26th terminal (CSTART) is connected to the ground terminal (GND) through the ninth capacitor C ₉ .

The 30th terminal (SAW) is connected to the ground terminal (GND) via the seventh capacitor C ₇ . The servo circuit section 1c has the 30th terminal (SA
The rotation speed of the motor 3 is controlled according to the voltage applied to W).

The 28th terminal (VREF) and the 30th terminal (SAW) are connected in series to the 21st terminal.
Are connected to each other via a resistor R ₂₁ , a sixth variable resistor VR ₆ and a fifth variable resistor VR ₅ . The fifth variable resistor VR ₅ has the collector terminal of the twelfth transistor TR ₁₂ connected to the end on the 30th terminal (SAW) side, and the 12th terminal on the 28th terminal (VREF) side. The emitter terminal of the transistor TR ₁₂ is connected.

In the motor control circuit configured as described above, the servo circuit section 1c causes the signal processing circuit to set the first terminal (START) to "H" via the _second analog switch S _2. When the level is set to "", the rotational driving of the motor 3 is started. The servo circuit section 1c causes the signal processing circuit to open the third analog switch S ₃ and set the 27th terminal (REV) to the “L” level, thereby rotating the motor 3. The rotation direction of the motor 3 is the reverse rotation direction when the third analog switch S ₃ is closed and the 27th terminal (REV) is set to the “H” level. .

When the 27th terminal (REV) is at "L" level, the emitter terminal and the collector terminal of the eleventh transistor TR ₁₁ are cut off, and the emitter terminal of the _twelfth transistor TR ₁₂ is cut off. The connection between the collector terminal and the collector terminal is also cut off, and the 30th terminal (SA
The resistance value between W) and the 28th terminal (VREF) is
It becomes the sum of all resistance values of the 21st resistor R ₂₁ , the 6th variable resistor VR ₆ and the 5th variable resistor VR ₅ .
Therefore, at this time, the sixth and fifth variable resistors V
By adjusting R ₆ and VR ₅ , the rotation speed of the motor 3 in the forward rotation direction can be adjusted.

When the 27th terminal (REV) is set to the "H" level, the emitter terminal and the collector terminal of the eleventh transistor TR ₁₁ become conductive, and the twelfth transistor TR ₁₂ becomes The power supply terminal (+ V _CC ) is connected to the base terminal through the eleventh transistor TR ₁₁ , and the emitter terminal and the collector terminal are electrically connected. Therefore, the 30th terminal (SA
The resistance value between W) and the 28th terminal (VREF) is
It becomes the sum of the resistance values of the 21st resistor R ₂₁ and the 6th variable resistor VR ₆ . At this time, the sixth variable resistor VR
By adjusting ₆ , the rotation speed of the motor 3 in the reverse rotation direction can be adjusted.

Also in the control by this motor control circuit, the rotation speed of the motor 3 is as shown in FIG.
In the forward rotation direction, for example, a high speed S _{H of} about 2000 rpm can be set, and in the reverse rotation direction, a low speed S _{L of} about 500 rpm can be set. The servo circuit section 1c causes the signal processing circuit to set the first terminal (START) to the "L" level, thereby ending the rotational driving of the motor 3.

[0092]

As described above, recording and / or recording according to the present invention
Alternatively, in the reproducing apparatus, the control means for controlling the rotational driving direction and the rotational speed of the motor capable of the normal rotation and the reverse rotation are driven by the driving force transmission switching mechanism when transmitting the driving force of the motor to the mode switching mechanism. The rotation speed of the motor is set lower than when the drive power transmission switching mechanism transmits the drive power of the motor to the recording and / or reproducing mechanism.

Therefore, in this recording and / or reproducing apparatus, the operation of selecting the operation mode in the recording and / or reproducing mechanism by the mode switching mechanism can be performed easily, surely, and swiftly, and it is wasteful. Power consumption can be saved.

Further, in this recording and / or reproducing apparatus, the control means includes a servo circuit section to which a motor is connected, and a direction control section which is connected to the servo circuit section and switches the rotational driving direction of the motor. A speed control unit connected to a servo circuit for setting the rotation speed of the motor, and the direction control unit controls the speed control unit to change the rotation speed of the motor to a rotational driving direction of the motor. When the speeds are set to correspond to each other, the rotation speed of the motor can be surely set to the speed corresponding to the rotational driving direction of the motor.

That is, the present invention is a recording and / or reproducing apparatus configured so that the state in which the recording and / or reproducing mechanism is driven and the state in which the mode switching mechanism is driven can be switched by selecting the rotational driving direction of the motor. In addition, wasteful power consumption in the motor can be suppressed, control of rotational driving of the motor can be facilitated, and further, after the mode switching mechanism is driven to switch the operation mode, It is possible to provide a recording and / or reproducing apparatus in which the return to the state of driving the recording and / or reproducing mechanism is speeded up.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a recording and / or reproducing apparatus according to the present invention.

FIG. 2 is a plan view showing a state in which a recording and / or reproducing mechanism is driven in the recording and / or reproducing apparatus as seen through.

FIG. 3 is a transparent plan view showing a state in which a mode switching mechanism is driven in the recording and / or reproducing apparatus.

FIG. 4 is a plan view showing a configuration of the mode switching mechanism in an initial state.

FIG. 5 is a plan view showing a state in which the mode switching mechanism is selecting a forward reproduction mode.

FIG. 6 is a plan view showing the shape of a cam gear of the mode switching mechanism.

FIG. 7 is a graph showing the relationship between the rotational angle position of the cam gear and the selected operation mode.

FIG. 8 is a circuit diagram showing a configuration of control means of the recording and / or reproducing apparatus.

FIG. 9 is a circuit diagram showing another example of a configuration of a direction control unit and a speed control unit in the control means.

FIG. 10 is a circuit diagram showing another example of the configuration of the control means.

FIG. 11 is a circuit diagram showing still another example of the configuration of the control means.

FIG. 12 is a graph showing the relationship between the rotation speed of the motor in the recording and / or reproducing apparatus and the time required to reach a constant speed and stop.

[Explanation of symbols]

 1 ・ ・ ・ ・ ・ ・ ・ ・ ・ Servo circuit part 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Motor 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Mechanical part 5 ・ ・・ ・ ・ ・ ・ ・ ・ ・ Direction control unit 6 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Speed control unit 13 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Rotating arm 18 ・ ・ ・・ ・ ・ ・ ・ ・ Supply side reel gear 20 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Take up side reel gear 26 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cam gear

Claims (2)

[Claims] 1. A recording and / or reproducing mechanism for feeding a recording medium and writing and / or reading an information signal to and from the recording medium, and a mode switching for switching an operation mode of the recording and / or reproducing mechanism. A mechanism, a motor capable of forward and reverse rotation drive, and a drive of the motor selectively according to the rotational drive direction of the motor to either the recording and / or reproducing mechanism or the mode switching mechanism. A driving force transmission switching mechanism for transmitting a force; and a control means for controlling a rotational driving direction and a rotational speed of the motor, wherein the control means controls the rotational driving direction of the motor by the driving force transmission switching mechanism. When the driving force of the motor is set to the rotation direction that is transmitted to the mode switching mechanism, the rotation driving direction of the motor is set to the transmission direction of the driving force. Rikae mechanism than when the direction of rotation of the driving force of the motor becomes possible to transmit to the recording and / or reproducing mechanism, comprising no rotational speed of the motor and low speed recording and / or reproducing apparatus. 2. The control means comprises a servo circuit section to which a motor is connected, a direction control section connected to the servo circuit section for switching the rotational driving direction of the motor, and a servo circuit section connected to the servo circuit. A speed control unit for setting a rotation speed, wherein the direction control unit controls the speed control unit to set the rotation speed of the motor to a speed corresponding to a rotational driving direction of the motor. 1. The recording and / or reproducing apparatus according to 1.