JPS6087451A - Mode selection switching device - Google Patents

Abstract

PURPOSE:To simplify the structure of a mode selection switching device by providing a mode selection fixing contact to a fixed means to detect the operating position of each mode. CONSTITUTION:Various mode selection fixing contacts 4-8 are set to a fixed means 2. When a stop mode is changed to a reproduction mode, a loading motor 14 is revolved forward by a control means 17. While a mobile means 3 moves toward B and a metallic bar 5 has a contact with the contact 8 to detect a reproducible operating position. Then the motor 14 is stopped by the means 17. At the same time, a pinch roller presses a capstan by the forward revolutions of the motor 14. In this case, the revolving direction of a capstan motor 13 is defined forward. Thus the motor 13 is revolved forward at a low speed of a video record mode by the means 17. Then the video recording is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a mode selection switching device for detecting a predetermined mode and executing the predetermined mode in a magnetic recording/reproducing apparatus.

(B) Prior Art Conventionally, a magnetic recording/reproducing apparatus has been provided with a microswitch or the like as a means for detecting that the loading motor rotates and the tape loading state or tape unloading state is completed. For example, a tape loading state or a tape unloading state is performed by moving the tape guide along the cylinder head following the tape guide groove, and here, after moving along the cylinder head, the tape guide moves along the cylinder head. The tape loading state or tape unloading state is completed by activating the switch and stopping the rotation of the loading motor.

Also, for example, in a magnetic recording and reproducing device that does not require a reel motor and rotates a supply reel stand or a take-up reel stand using a capstan motor in combination.

In a predetermined mode in the tape loading state or tape unloading state, the supply reel stand or the take-up reel stand rotates or stops, so the rotation speed and rotation direction of the capstan motor must be changed according to the predetermined mode. A means of detecting and switching between predetermined modes was required.

However, as mentioned above, if a microswitch is provided to detect the completion of the tape loading state or tape unloading state, or a means to detect a predetermined mode is provided, the component configuration becomes complicated, and the above-mentioned states cannot be detected centrally. There were drawbacks.

(c) Object of the Invention The present invention eliminates the above-mentioned drawbacks, and by providing a mode selection fixed contact on the fixing means to detect the operating position of various modes, it simplifies the component configuration, reduces costs, and
It also aims to improve reliability.

B) Structure of the Invention The present invention provides a magnetic recording and reproducing device comprising: a fixed contact, a fixing means for fixing the all-selection fixed contact, a movable means for contacting each of the selection fixed contacts to select a predetermined mode; The mode selection switching device includes a drive means for driving a movable means, and a control means coupled to the movable means and the drive means.

(e) Examples The details of the present invention will be specifically explained with reference to the illustrated embodiments.

FIG. 1 is a plan view showing the mode selection switching device of the invention, FIG. 2 is a block diagram showing the operation of the mode selection switching device of the invention, and FIGS. 3, 4 and 5 are the modes of the invention. A flowchart showing the operation progress when the selection switching device executes the playback state to the review state, the review state to the playback state, and the recording state to the recording pause state. Fig. 7 is a main part mechanism diagram showing a state in which the operating position of the pinch roller and the capstan are detected and the pinch roller and capstan are in pressure contact. It is a diagram.

To explain the figure numbers for FIGS. 1, 2, 6, and 7, ■ is a side-to-side mode selection switching device, (2) is a fixing means,
(3) is a movable means, (4) is a first fixed contact for selecting eject mode, (5) is a second fixed contact for selecting stop mode, (6) is a third fixed contact for selecting recording Bose mode,
(7) is the fourth fixed contact for selecting Revue mode, (8)
(9) is a metal piece provided on the movable means (3);
(G) is one end of the metal piece (9), (B) is the metal piece (9)
The other end (6) is one end of the metal piece (9)◇0 is the metal fixed part on which it slides (t3 ti capstan motor, α4
1&'! Loading motor, (C) is capstan motor drive circuit, (G) is loading motor drive circuit,
(17'l is the system control means, (g) is the cylinder,
(19a) (19b) is the tape guide, the wire is the supply reel, Ql) is the winding IJ-le, (a) is the cassette tape,
I23 Havintirola, (c) is capstan, (25
a) (25b) (25c) is a guide pin, (26a
) (26b) is the belt, the line is the supply reel stand, the line is the take-up reel stand, the line is the idler, (30a) (30b) (3
0c) is the pulley, C11) is the worm gear, ni) is the master gear, (to) is the guide groove, (b) is the moving lever, ni) is the master gear, (to) is the guide groove, and (b) is the moving lever.
is a guide bottle.

In the mode selection switching device shown in FIG.
goods) from point X to Y in the direction of arrow A or arrow B.
Move to the point.

In FIG. 2, when a predetermined operation button (not shown) is pressed,
The output signal operates the system control means α force, and the output signal of the system control means (17) causes the capstan motor drive circuit (c) and the loading motor drive circuit (c) to operate.
A) operates to drive the capstan motor (to) and the loading motor α, respectively, to control the rotation speed and rotation direction. The idler wire that rotates the supply reel architrave and the take-up reel architrave is driven by a capstan motor.

Furthermore, as mentioned above, since the loading motor α→ and the movable means (3) in the mode selection switching device are connected via the moving lever (to), the movable means (3) is moved by the rotational force of the loading motor α→. The other end Qη of the metal piece (9) moved and provided on the movable means (3) comes into contact with a fixed contact for a predetermined operation button (not shown) to detect the operating position, and the metal fixed part (2), An operating position detection signal is output to the fixed contact via the metal piece (9), and the output is input to the system control means a to execute a predetermined mode.

To explain FIG. 7, in a predetermined mode, the loading motor α rotates, and the pulleys (30b) (30c
) and the belt (26b) rotates the six worm gears (26b) to rotate the master gear), and the guide pin provided on the moving lever (c) connects to the guide groove (g) provided in the master gear. The moving lever (b) moves by tracing the movement lever (b), and from this the movable means (3) moves to the mode selection switching device (
1) Each selection constant contact (4) (5) (6) (7) (8)
The operating position of a predetermined mode is detected by moving the .

First, when performing a playback state or a recording state from a stopped state after installing a cassette (not shown), the rotation direction of the loading motor α which moves the movable means (3) shown in FIG. 1 in the direction B is set in the forward direction. Then, when the play button (not shown) or the record button (not shown) is pressed, the system control means αη operates the loading motor drive circuit αQ, the loading motor (141) rotates in the forward direction, and the movable means ( 3
) The other end (b) of the metal piece (9) provided on the second
From the state in which it is in contact with the fixed contact (5), it moves in the B direction and in contact with the fifth fixed contact (8) to detect an executable operating position in the playback state or recording state, and the loading motor is activated by the system control means α force. The drive circuit Q operates and the loading motor α station stops. The pinch roller Z is also connected to the loading motor (B) via a transmission means (not shown), and when the loading motor Q station rotates in the positive direction, the pinch roller wing and the capstan (B) are connected to each other as shown in FIG. ) is pressure-welded. At this time, if the rotation direction of the capstan motor (B) that drives the capstan (C) that causes the cassette tape to run toward the take-up reel Q side is the positive direction, then the system control means aη controls the capstan motor drive circuit ( ) operates and the capstan motor (C) rotates in the forward direction at low speed when executing the recording state or playback state, that is, the capstan (C) rotates in the forward direction at low speed and the pinch roller and capstan @ are pressed into contact with each other, and the take-up reel architrave is rotated at a low speed by the aforementioned rotation of the capstan motor (2), thereby executing the recording state or the playback state.

When executing the review state from the playback state, this will be explained using FIGS. 1, 2, 6, and the flowchart in FIG. 3. First, press the review button (not shown), and then press the review button (not shown).
The system control means αη is operated (step ■). The system control means α force operates the loading motor drive circuit aQ and the capstan motor drive circuit (c), and the stopped loading motor (b) starts rotating in the opposite direction, turning it into the movable means (3). The other end (b) of the provided metal piece (9) starts to move in the entry direction in Fig. 1 from a state where it is in contact with the fifth fixed contact (8), and the pinch roller (
(c) is separated from the capstan (c), and the capstan motor (to) changes from low speed to high speed and rotates in the forward direction (step ■).

The purpose of rotating the capstan motor (G) in the forward direction at high speed is to prevent the pinch roller from moving away from the capstan (F) and losing tape tension since the loading motor (B) rotates in the opposite direction. to prevent;
In other words, even if the pinch roller handle is separated from the capstan (C), the take-up reel architrave rotates at high speed due to the high-speed rotation of the capstan motor (To) in the forward direction, and the cassette tape (A) is transferred to the take-up reel Q. The tape tension control is applied to the winding direction toward the force side, and the cassette tape (A) and cylinder (G) are
This is to prevent gaps from forming between the tapes, and since the time required to detect the operating position in each mode is short, it is necessary to apply sufficient tape tension within that short time.

Continue the operation of step ■ above until the metal piece (9) provided on the movable means (3) moves in the input direction and contacts the third fixed contact (6) for selecting the recording Bose mode (step ■).
. When the other end α of the metal piece (9) contacts the third fixed contact (6) and the recording pause operation position is detected, the system control means Q7) is activated by the detection signal, and the loading motor drive circuit QO is activated. The loading motor α→ stops rotating in the reverse direction, and the capstan motor drive circuit QF9 switches the capstan motor (c) from high-speed rotation in the forward direction to rotation in the reverse direction (step 2). At this time, sufficient tape tension is applied to the cassette tape (A) in the winding direction towards the winding wheel Q1), so the reverse rotation of the capstan motor (G) immediately causes the cassette tape (A) to The idler wire, which was rotating the take-up reel stand (E) on the take-up reel architrave side without being wound onto the supply reel (A) side, was turned to the supply reel stand in order to rotate the supply reel stand (A). ) side. As shown in Fig. 1, the fourth fixed contact (7) for selecting the Revue mode is fixed to the right side of the third fixed contact (6) for selecting the recording Bose mode, so that the loading motor (14) is moved in the forward direction. Movable means (3)
must be moved in direction B, but if the rotation direction of loading motor U→ is changed immediately, a large load will be applied to the mechanical parts that are linked to loading motor α→ and loading motor station 29, so in order to prevent this, The loading motor α→ is stopped for a predetermined time (for example, about 1001 rLsec) (step ■).

Then, due to the reverse rotation of the capstan motor 0, the supply reel stand (B) rotates and begins to rewind the cassette tape (A) to the supply reel rotation, and at this time, tape tension is applied in this direction. At the same time, the capstan motor drive circuit (Ie) rotates the capstan motor CL3 in the opposite direction at a low speed.

From this, when the cassette tape (A) starts to rewind, the rotational speed of the capstan motor α is low, so disturbance occurs at the contact area between the cassette tape (A) and the cylinder head (not shown). Image distortion can be suppressed without causing any disturbance.

In addition, the above-mentioned predetermined time (for example, about 100 m5ec)
Afterwards, the loading motor drive circuit OQ is operated by the system control means Q71 to rotate the loading motor (1→ at low speed in the forward direction) to rotate the other end αη of the metal piece (9) provided on the movable means (3) into the third Move from the fixed contact (6) in direction B (step ■).

The other end (B) of the metal piece (9) provided on the movable means (3) performs the operation of step (3) described above when the fourth
Continue until it touches the fixed contact (7) (step ■).

When the other end (B) of the metal piece (9) comes into contact with the fourth fixed contact (7) and the Revue operation position is detected, the system control means αη is operated by the detection signal, and the loading motor drive circuit σ0 operates. The loading motor α stops from rotating at low speed in the forward direction. At this time, the loading motor α→ rotates in the forward direction, and the pinch 0-ra (c) is in pressure contact with the capstan (c). Also, the capstan motor drive circuit C1O causes the capstan motor (to) to rotate in the opposite direction from low speed rotation to high speed rotation.

The cassette tape is rewound to the supply reel at high speed by the pinch roller (a) and the capstan (a) (step ■). From this point on, the Revue state is executed (step ■).

The operating position of the key state is detected by connecting the other end (b) of the metal piece (9) provided on the movable means (3) to the fifth fixed contact (8).
), and when executing the revue state from the cue state, the capstan motor rotates at high speed in the forward direction in the cue state in step (To)
It is not necessary to rotate from low speed to high speed in the forward direction, and the other aspects are the same as the Fuller chart in FIG.

In addition, the movable means (3) detects the operating position in the still state.
) The other end αη of the metal piece (9) provided on the fifth fixed contact (
8), and when changing from the still state to the review state, step ■
During regeneration, the capstan motor head is rotated in the forward direction from low speed to high speed, whereas in methyl mode, the capstan motor (g) must be rotated in the forward direction at high speed from a stopped state. The rest is the same as the flowchart in FIG.

As described above, when executing the review state from the playback, cue or methyl state, the metal piece (9) changes to the third fixed contact (6) for selecting the recording pause mode within the short time required to execute the state. When the loading motor α→ and the capstan motor (G) rotate in a predetermined direction and at a predetermined rotation speed, sufficient tape tension is applied to the cassette tape holder, and the revue operation position is detected. , that is, the fourth fixed contact (7
) is in contact with the other end α of the metal piece (9) provided on the movable means (3), the Revue state can be fully executed.

Next, when executing the playback state from the review state, the following will be explained using FIGS. 1, 2, 6, and the flowchart of FIG. 4. First, press the playback button (not shown), Operate the means α force (step ■). The loading motor drive circuit a is operated by the system control means α force, and the stopped loading motor (b) is rotated in the opposite direction, and the metal piece (9) provided on the movable means (3) is rotated in the opposite direction.
) starts moving in the inward direction from a state where the other end (b) is in contact with the fourth fixed contact, and the pinch roller (c) separates from the capstan (c), and the capstan motor (
(to) was rotating at high speed in the opposite direction in the revue state, so even if the pinch roller was separated from the capstan (c), the cassette tape (a) would still be wound in the direction of being wound toward the supply reel (e). Since tension is applied, there is no need to switch the rotation direction and rotation speed of the capstan motor α field (step ■).

Continue the operation of step (2) described above until the metal piece (9) provided on the movable means (3) moves in the input direction and comes into contact with the third fixed contact (6) for selecting the recording pause mode (step (2)
). When the other end α force of the metal piece (9) contacts the third fixed contact (6) and detects the recording pause operation position, the system control means α force is activated by the detection signal to control the loading motor drive circuit α. The frame stops the 20 loading motors from rotating in the reverse direction, and the capstan motor drive circuit CLO switches the capstan motor (to) from high-speed rotation in the reverse direction to rotation in the forward direction (step 2). Even if the capstan motor (to) rotates in the forward direction, tape tension is applied to the cassette tape (a) in the direction in which it is wound toward the supply reel (1), so The idler wire that was rotating the winding reel is simply switched to the take-up reel architrave side.

Then, for the same purpose as step (2) in the flowchart of FIG. 3, the loading motor 0→ is stopped for a predetermined period of time (for example, about 100 m5ec) (step (2)).

After a predetermined period of time, the loading motor drive circuit αQ is operated by the system control means (b) to rotate the loading motor α→ in the forward direction at low speed, thereby rotating the other end of the metal piece (9) provided on the movable means (3). (B) is moved from the third fixed contact (6) in the B direction, and the capstan motor (G) is rotated at low speed in the forward direction (Step 2).

This is to suppress image disturbance caused by disturbance at the contact portion between the cassette tape (a) and the cylinder head (not shown). The operation of step (2) described above is continued until the metal piece (9) provided on the movable means (3) comes into contact with the fifth fixed contact (8) for selecting the playback mode (step (2)).

When the other end (b) of the metal piece (9) comes into contact with the fifth fixed contact (8), the pinch roller (2) is in pressure contact with the capstan (c), and the regeneration operation position is detected, The detection signal causes the system control means α force to operate, and the loading motor drive circuit CIQ causes the loading motor αΦ to stop from rotating at a low speed in the forward direction. In addition, since the capstan motor (to) was rotating at low speed in the forward direction in step ■, there is no need to switch the rotation direction and rotation speed of the capstan motor (c) after detecting the regeneration operation position in step ■. Pinch roller wire and capstan (
(step ■) causes the cassette tape handle to run toward the take-up reel Φη. From this point on, the playback state is executed (step ■).

When changing from the review state to the key state, in the flowchart of FIG. It is necessary to operate the stern motor drive circuit a to rotate the capstan motor (to) at high speed in the forward direction.

Next, when executing the recording pause state from the recording state, the first
To explain with reference to FIGS. 2 and 6 and FIG. 5 which shows a flowchart, a pause button (not shown) is pressed to operate the system control means aη (step 2). Loading motor drive circuit Q0 by system control means α force
The loading motor a4) that had been stopped is started to rotate in the opposite direction, and the metal piece (9) provided on the movable means (3) is in contact with the fifth fixed contact (8). The pinch roller (E) starts moving in the direction shown in FIG. At this time, the capstan motor (2) is rotating at a low speed in the forward direction as in the recording state.

Continue the operation of the above step ■ until the metal piece (9) provided on the movable means (3) moves in the input direction and contacts the third fixed contact (6) for selecting the recording pause mode (step ■).
. This allows the pinch roller (to) and capstan (to) to
The cassette tape will not run.

When the other end α→ of the metal piece (9) comes into contact with the third fixed contact (6) and the recording pause operation position is detected, the detection signal causes the system control means α to operate and the loading motor drive circuit ( ), the loading motor αΦ stops rotating in the opposite direction, and the capstan motor drive circuit (
(to) switches the capstan motor (to) from forward rotation at low speed to reverse rotation, and the idler wire that rotates the take-up reel stand (c) rotates the supply reel stand (2) to rotate the supply reel stand (■). ) side. (Step ■). Then, for the same purpose as step ① in the flowchart of Fig. 3, for a predetermined period of time (for example, about 100 @sec) to prevent a large load from being applied to the loading motor (b) and the mechanical parts that interlock with the loading motor (b). Then, the loading motor α4 is stopped (step ■).

After a predetermined period of time, the loading motor drive circuit (g) is operated by the system control means α force to start rotating the loading motor (b) in the forward direction (step (2)).

By the operation in step (2), the metal piece (9) provided on the movable means (3) moves in the direction B from the state in which it is in contact with the third fixed contact (6).

Continue the operation of step (2) above until the other end (b) of the metal piece (9) provided on the movable means (3) moves in the direction B and comes into contact with the fourth fixed contact (7) for selecting the review mode (
Step ■). When the review operation position is detected, the system control means ◇η is operated by the detection signal, and the 26 loading motor stations are stopped by the loading motor drive circuit (g) (step -). At this time, the pinch roller wire is in pressure contact with the capstan (c). The system control means (17) operates to perform editing/recording etc., and the capstan motor drive circuit (c) rotates the capstan motor (to) in the opposite direction at low speed for a predetermined period of time (e.g. The cassette tape (A) is rewound to the supply reel (A) by a pinch roller and a capstan (for about 1.5 seconds) (step (2)). After a predetermined period of time (for example, about 1.5 seconds) has elapsed, the loading motor drive circuit (11) uses the system control means α to move the stopped loading motor α.
As a result of the operation, rotation starts in the opposite direction, and the metal piece (9) provided on the movable means (3) moves in the incoming direction from the fourth fixed contact (7) (step 0).

The operation of step 0 described above is continued until the other end (b) of the metal piece (9) provided on the movable means (3) moves in the A direction and comes into contact with the third fixed contact (6) for selecting the recording pause mode. Continue (Step 0). When the other end (B) of the metal piece (9) comes into contact with the third fixed contact (6) and the recording pause operation position is detected, the system control means αη is operated by the detection signal, and the loading motor drive circuit ( 1G causes the loading motor α to stop rotating in the opposite direction, and the pinch roller (E) is slightly separated from the capstan (F), and the capstan motor (T) is stopped by the capstan motor drive circuit (C). (Step ■).From now on, a recording pause state is executed (Step 0).

When executing the recording pause state from the still state, the system control means (b) operates the capstan motor drive circuit (to) in step ① of the flowchart in Fig. 5 to move the capstan motor (to) in the forward direction at a low speed. The process must be rotated, and the rest is the same as the flowchart in FIG.

(F) Effects of the Invention According to the mode selection switching device of the present invention, since the mode selection fixed contact is fixed to the fixing means, it can be made into a shed, the mode operation position can be detected centrally, and the component configuration is This provides advantages such as simplification, cost reduction, and improved reliability.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the mode selection switching device of the present invention, FIG. 2 is a block diagram showing the configuration of the mode selection switching device of the invention, and FIGS. 3, 4, and 5 are the modes of the invention. A flowchart showing the operation progress when the selection switching device executes the playback state to the review state, the review state to the playback state, and the recording state to the recording pause state. Fig. 7 is a main part mechanism diagram showing a state in which the pinch roller and capstan are in pressure contact after the position has been detected; Fig. 7 is a main part mechanism diagram showing that the mode selection switching device of the present invention is operated by a loading motor via a moving lever; It is. Explanation of main drawing numbers (ri...mode selection switching device, (2)...fixing means, (3)...movable means, (4)...first fixed contact, (5)...・Second fixed contact, (6)...third
Fixed contact, (7)...Fourth fixed contact, (8)...
・Fifth fixed contact, α-loading motor,
α force...system control means, (goods)...movement lever. 1 Figure 3 Figure 4 Figure 5■

Claims (1)

[Claims] (1) In a magnetic recording/playback device, the eject point and
a fixing means for fixing the all selection fixed contacts; a movable means for selecting a predetermined mode by contacting each of the selection fixed contacts;
It is composed of a driving means for driving the movable means, and a control means coupled to the movable means and the driving means, and the control means is operated so that the movable means is controlled by the driving means to a predetermined selection at each selection fixed contact. A mode selection switching device characterized by moving a fixed contact to a fixed contact, detecting the operating position of the selected fixed contact, and executing the mode of the selected fixed contact.