JPS6220615B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is applicable to stop state, recording/playback state, queue/playback state,
Regarding tape recorders that change the review state using the same drive means, the purpose of this tape recorder is to temporarily change from any operating state to a stopped state and then enter a predetermined operating state by operating an operation switch. be.

The applicant has already applied for utility model registration in 1982.
In No. 165964 (hereinafter referred to as the prior application), a tape recorder was proposed in which the stop state, recording/playback state, and queue/review state can be switched by the same driving means. However, in order to switch each state with a single drive means, when stopping during operation, it returns to the stopped position simply by releasing the drive means, or when the drive means is driven and then released again, the stopped position Different stopping means are required depending on the previous operating state, such as when returning to the current state. Furthermore, when an operation switch or the like is used to perform a different operation from the previous one during operation, a different driving method is required depending on the previous operating state.

The present invention uses a detection means that detects the return to the stop position to return to the stop position regardless of the previous state, and even when an operation switch or the like is used during operation to perform a different operation than before. The object of the present invention is to provide a tape recorder that overcomes the above-mentioned drawbacks by performing a predetermined operation after once returning to a stop position, and is capable of switching using a single drive means.

A detailed explanation will be given below based on the drawings.

FIG. 1 is a plan view showing an embodiment of the present invention in a stopped state, FIGS. 2 and 3 are a plan view and side view showing a recording/playback state, and FIG. 4 is a plan view showing a queue or review state. It is. In the figure, 1 is the board, 2 is the capstan, 3 is the flywheel attached to the capstan 2, and 4 is the capstan 2.
5 is a bearing of the capstan 2, 6 is a pinch roller, 7 is a chassis that operates as a movable member,
8 is a pinch roller shaft attached to chassis 7;
9 is a magnetic head attached to the chassis 7; 14;
1 is a tape cassette having tape holders 10 to 13; 15 and 16 are a pair of reels; 17 is a motor;
18 is a pulley; 19 is a belt suspended between the pulley 18 and the flywheel 3; 21 and 23 are pins fixed to the base plate 1; 25 is a cam plate rotatably mounted around the pin 23; 20 is pin 2 above
1 and the cam plate 25, and the cam plate 25
22 is a pin that restricts the rotation of the cam plate 25; 24 is a pin attached to the head chassis 7; 26 is suspended between the pin 27 on the board 1 and the head chassis 7; , a spring that constantly biases the head chassis 7 downward in the figure; 2;
Reference numeral 8 indicates a guide pin loosely fitted into the guide hole 7a of the head chassis 7, 29 indicates a solenoid serving as a driving means, 30 indicates a plunger, 31 indicates a pin connecting the plunger 30 and the head chassis 7, and 32 indicates that the head chassis 7 is at a stop position. This is a switch for detecting a stop position that is attached to the board 1 so that it comes into contact only when the switch is turned off.

This embodiment is particularly different from the previous application in that the switch 32 for detecting the stop position is
is attached, and in the stopped state shown in FIG. 1, the switch 32 is pressed by the chassis 7 and turned on, and in the recording/playback state and the queue/review state shown in FIGS. 2 to 4, it is separated from the chassis 7 or slightly moved. Even if the switch 32 is touched, the switch 32 is turned off.

FIG. 5 shows an embodiment of the drive section of the present invention.
In FIG. 5, 33 is the above-mentioned stop position detection switch, 34 is a stop pulse signal input terminal, 35 is an input terminal of the stop position detection switch 33, and 36 is an AND circuit having input terminals 34 and 35 as inputs; 37 is the output of the AND circuit 36 and a delay circuit 41, which will be described later.
38 is OR circuit 3 which takes the output of
7, a delay circuit which takes the output of 7 as an input and ensures a delay time until the switch 33 comes into contact after the aforementioned driving means is released and returns to the stop position; 39 is an AND circuit which takes the input end 35 and the delay circuit 38 as input; 40 uses the output of the AND circuit 39 as a set input, the output of the OR circuit 37 as a reset input,
In the set state, the solenoid 45 (described later) is
A set reset flip-flop (RS flip-flop) 41 outputs a signal to turn on the solenoid 45 and releases the solenoid 45 in the reset state. 42 is an output terminal from the Q output of the reset flip-flop 40;
43 is a resistor, 44 is a driving transistor, and 45 is a solenoid that is driven by the driving transistor and serves as the aforementioned driving means.

The operation of this embodiment will be explained with reference to a flow chart shown in FIG.

In FIGS. 5 and 6, it is assumed that a stop pulse signal is input from the input terminal 34. First, if it is already at the stop position, the switch 33 is turned on and one input of the AND circuit 36 is at a low level, so the stop pulse signal is sent to the AND circuit 36.
Since there is no output and no action is taken, it remains at the stop position.

Next, when the switch 33 is held at the queue or review position, the switch 33 is off and one input of the AND circuit 36 is at a high level, so the stop pulse signal from the input terminal 34 is It is output to the output of the AND circuit 36, and then to the output of the OR circuit 37, and is output to the RS flip-flop 4.
0 reset input. At the queue/review position, the RS flip-flop 40 is already in the reset state, the solenoid 45 is released, and no change occurs. On the other hand, OR circuit 37
The output of is input to the delay circuit 38, so after a predetermined delay time, the pulse signal is input to the AND circuit
9 is input into one input. Since the other input of the AND circuit 39 is connected to the switch 33 and remains at high level, the pulse signal is output to the output of the AND circuit 39, and the RS flip-flop 4
It is input to the set input of 0, sets the RS flip-flop 40, turns on the transistor 44 through the resistor 43, and drives the solenoid 45. Also, the output of the AND circuit 39 is sent to the delay circuit 41.
After a predetermined delay time, the pulse signal is input again to the input of the OR circuit 37, outputted again, and inputted to the reset input of the RS flip-flop 40 to reset the RS flip-flop and release the solenoid 45. That is, when driven/released from the queue/review state, it returns to the stopped state and the switch 33 is turned on. On the other hand, since the output of the OR circuit 37 is input to the delay circuit 38, the pulse signal is input again to one input of the AND circuit 39 after a predetermined period of time, but it returns to the stop position and the switch 33 is turned on. If so, the other inputs of the AND circuit 39 become low level, and no pulse signal is output to the output of the AND circuit 39.
Thereafter, the RS flip-flop 40 does not operate and remains at the stopped position. If the switch 33 is not turned on, the above operation is repeated until the switch 33 is returned to the stopped position and the switch 33 is turned on.

Furthermore, when the solenoid 45 is driven and is at the recording/playback position, when a stop pulse signal is input from the input terminal 34, since the switch 33 is off, one input of the AND circuit 36 becomes high level and stops. The pulse signal is outputted to the output of the AND circuit 36, and inputted to the reset input of the RS flip-flop 40 via the OR circuit 37, and the RS flip-flop is placed in the reset state.
5 is canceled. On the other hand, since the output of the OR circuit 37 is input to the delay circuit 38, a pulse signal is input to one input of the AND circuit 39 after a predetermined time. Here, when the solenoid 45 is released and returns to the stop position, the switch 33 is turned on and the other inputs of the AND circuit 39 become low level, the pulse signal is not output to the output of the AND circuit 39, and the RS flip-flop is no longer output. It does not operate and remains in the stopped position. In addition, if the solenoid 45 is released and the holding state is maintained, the switch 3
3 remains off, the other inputs of the AND circuit 39 become high level, and a pulse signal is output from the AND circuit 39, repeating exactly the same operation as when the queue and review position is held as described above. Return to the stopped position.

As mentioned above, no matter what the previous state is, using the detection means that detects the stop position,
It is possible to construct a tape recorder that can be returned to the stop position by the same series of operations. In addition, the stop pulse signal is operated by the operation switch,
Alternatively, it may occur by normal means such as detecting the end of the tape or using a timer.

FIG. 7 shows the main part of another embodiment, and FIG. 8 further shows the specific configuration of its control section. The figure shows a case where the operation is controlled by operation switches, and in FIG. 54 is a playback switch, 55 is a key switch, and 56 is a review switch. 59 is a solenoid functioning as a driving means, 58 is a transistor for driving the solenoid 59, and 57 is a resistor. 61 is a motor, 60
is a forward/reverse switching circuit that switches the rotation direction of the motor 61.

Further, 51-1 is the input end of the stop position detection switch 52, 51-2 is the input end of the stop switch 53,
51-3 is the input terminal of the playback switch 54, 51-4
51-6 is the input end of the key switch 55, 51-6 is the output end of the drive signal of the solenoid 59, and 51-7 is the output end of the signal (normal rotation signal) specifying the rotation direction (forward rotation) of the motor 61 during regeneration/queue. , 51-8 is an output end of a signal (reverse rotation signal) specifying the rotation direction (reverse rotation) during review. Further, 60-1 is an input terminal for a forward rotation signal, 60-2 is an input terminal for a reverse rotation signal, and 60-1 is an input terminal for a reverse rotation signal.
-3 and 60-4 are drive output ends of the motor 61.

In FIG. 8, 62 to 65 are pulse generation circuits that generate a pulse signal when a connected operation switch is pressed, 66 is an OR circuit that outputs a stop pulse signal, and the pulse generation circuit 62 and an AND circuit 77, which will be described later. , 81, 85 are input. 67
68 is an AND circuit whose inputs are the outputs of the stop position detection switch 52 and the OR circuit 66; 68 is an OR circuit whose inputs are the output of the AND circuit 67 and the output of a delay circuit 71 (described later); and 69 is the output of the OR circuit 68. A delay circuit 70 serves as an input for ensuring a delay time until the switch 52 contacts after the aforementioned driving means is released and returned to the stop position.
2 and the output of the delay circuit 69 as inputs, 71 receives the output of the AND circuit 70 as input,
A delay circuit secures the time required to once drive the drive means and release it in order to return it from the holding state to the stopped position. 75 is an inverting circuit that receives the switch 52 as an input. 94 is an OR circuit 66 and a delay circuit 69. 76 is an AND circuit that receives the output of the inverting circuit 75 and the output of the OR circuit 94 as inputs. Therefore, when the switch 52 is on at the stop position, the AND circuits 67 and 70
No pulse signal is output from the AND circuit 76.
A pulse signal is output from , and conversely, when the switch 52 is not at the stop position and the switch 52 is off, the pulse signal is
The AND circuits 67 and 70 output the signal, but the AND circuit 76 does not output the signal.

Furthermore, 77, 81, and 85 are AND circuits that receive the outputs of the pulse generation circuits 63, 64, and 65, and the outputs of RS flip-flops 79, 83, and 87, which will be described later.
3 and 87 are in the set state, the output is at a low level, and the pulse signals from the pulse generation circuits 63, 64, and 65 are not output from the AND circuits 77, 81, and 85. 79, 83, and 87 are reset flip-flops (RS flip-flops) that are set by the outputs of AND circuits 77, 81, and 85, respectively, and reset by the outputs of OR circuits 78, 82, and 86, which will be described later. It is set when pressed, remains set even if the same operation switch is pressed, and is reset when the stop switch or another operation switch is pressed.

The outputs of 78, 82, and 86 are connected to the reset inputs of RS flip-flops 79, 83, and 87, respectively, and the outputs are connected to the output of the stop pulse generation circuit 62 and the set input of the RS flip-flop to which the outputs are connected. An OR circuit whose input is the output of an AND circuit other than the AND circuit
Provides a reset signal to the RS flip-flop when the stop switch and operation switch are pressed. 80, 84, and 88 are the Q outputs of the RS flip-flops 79, 83, and 87, respectively, and the AND circuit 7.
This is an AND circuit that takes the output of 6 as an input. Reference numeral 89 denotes an OR circuit which receives the output of AND circuit 80 and the output of AND circuit 84, and its output is connected to the set input of RS flip-flop 92, which will be described later.
Reference numeral 90 denotes an OR circuit which receives the output of the AND circuit 84 and the output of the AND circuit 88 as inputs. Reference numeral 91 designates a delay circuit which receives the output of the AND circuit 90 and secures the time required to once drive the drive means and release it in order to move from the stop position to the holding position.

Reference numeral 74 denotes an RS flip-flop which drives the solenoid 59 which acts as a driving means, which drives the solenoid 59 in the set state and releases it in the reset state. 72 is an OR circuit that outputs the AND circuit 70, AND circuit 80, and AND circuit 90, and the output is
Connected to the set input of RS flip-flop 74. 73 is an OR circuit 68 and a delay circuit 9
The output is connected to the reset input of the RS flip-flop 74.

92 uses the output of the OR circuit 89 as a set input,
This is an RS flip-flop that uses the OR circuit 66 as a reset input, and its output becomes a normal rotation signal for the motor. Reference numeral 93 denotes an RS flip-flop which takes the output of the AND circuit 88 as a set input and the OR circuit 66 as a reset input, and its output becomes a reversal signal for the motor.

In the embodiment configured as described above, the stopping operation will be explained first.

When the stop switch 53 is pressed during a playback, queue, or review operation, a pulse signal is output from the pulse generation circuit 62.
First, the pulse signal is passed through OR circuits 78, 82, 86 to RS flip-flops 79, 8, respectively.
3 and 87, and puts the RS flip-flops 79, 83, and 87 into the reset state. At the same time, the pulse signal is output to the OR circuit 66, which first resets the RS flip-flops 92 and 93, cancels the forward rotation signal and reverse rotation signal of the motor, and stops the rotation. Further, since the switch 52 is off because it is in operation and not at the stop position, the pulse signal is output from the AND circuit 67 and not from the AND circuit 76. The pulse signal output from the AND circuit 67 is the OR circuit 6
8, 73 to reset the RS flip-flop 74 and release the solenoid 59, and at the same time pass through the delay circuit 69 and turn on the AND circuit 7 after a predetermined delay time.
0 input and the AND circuit 76 via the OR circuit 97
input to the input. If the motor returns to the stop position, the switch 52 is turned on, and the AND circuit 70 does not output a pulse signal, but the AND circuit 76 outputs a pulse signal.

If the motor does not return to the stop position yet, the switch 52 remains off and a pulse signal is output from the AND circuit 70, which passes through the OR circuit 72 to set the RS flip-flop 74 to the set state and drive the solenoid 59. . Subsequently, the pulse signal is input to the delay circuit 71, and after a predetermined time, the RS flip-flop 74 is reset again via the OR circuits 68 and 73, and the solenoid 59 is released.
At the same time, the signal passes through the delay circuit 69 and after a predetermined period of time is input again to the input of the AND circuit 70 and the OR circuit 94 to the input of the AND circuit 76. If it does not return to the stop position here, the same operation is repeated, and when it returns to the stop position, the pulse signal is not output from the AND circuit 70 but from the AND circuit 76.

On the other hand, RS flip-flop 79, 83, 87
has been reset, the pulse signals are not output from the AND circuits 80, 84, and 88, and henceforth,
It does not operate, returns to the stop position, stops the motor, and completes the stop operation. Even if the stop switch 53 is pressed in the stopped state, since the switch 52 is on, the AND circuit 67 does not output a pulse signal, does nothing, and remains in the stopped state.

Next, the case where each operation switch is pressed in the stopped state will be explained.

When the playback switch 54 is pressed in the stopped state, a pulse signal is output from the pulse generation circuit 63. In the stopped state, the RS flip-flop 79 is in the reset state, so the Q output is at a high level, and a pulse signal is output from the AND circuit 77, setting the RS flip-flop 79 in the set state. At the same time, the pulse signal is OR circuit 82,8
6 and RS flip-flop 8, respectively.
3 and 87 are reset, but they have already been reset in the stopped state. Further, the pulse signal is inputted to an AND circuit 67 via an OR circuit 66 and further to an AND circuit 76 via an OR circuit 94.
Since it is currently in a stopped state and the switch 52 is on, the pulse signal is not output from the AND circuit 67 but is output from the AND circuit 76. On the other hand, since only the RS flip-flop 79 is in the set state, a pulse signal is output from the AND circuit 80, and the RS flip-flop 74 is set in the set state via the OR circuit 72.
Also, via the OR circuit 89, the RS flip-flop 92 is set to the set state and a normal rotation signal is output, thereby entering the reproducing state.

When the key switch 55 is pressed in the stopped state, a pulse signal is output from the pulse circuit 64 and the RS flip-flop 83 is set. other at the same time
Reset RS flip-flops 79 and 87. On the other hand, the pulse signal is supplied to an OR circuit 66. As in the case of the reproduction operation described above, since the current state is stopped, the pulse signal is output from the AND circuit 76, output from the AND circuit 84, and output from the OR circuit 8.
9, the RS flip-flop 92 is set to a set state, and a normal rotation signal of the motor is output. On the other hand, the pulse signal is passed through the OR circuit 90 to set the RS flip-flop 74, drive the solenoid 59, release the solenoid 59 after a predetermined time by delay stop 91, and move it to the hold position, thereby changing the queue operating state. Become. When the review switch 56 is pressed, the RS flip-flop 93
is set, outputs a motor reverse rotation signal,
The other operations are exactly the same as when pressing the key switch 55, and the review operation state is entered.

If a different operation switch is pressed in the operating state, the pulse signal generated by the pulse circuit is input to the AND circuit 67 via the OR circuit 66, and since the switch 52 is in the operating state, the switch 52 is turned off. Therefore, it is output from the AND circuit 67,
After performing the aforementioned stopping operation and returning to the stopping position, a pulse signal is output from the AND circuit 76, and each of the aforementioned operations is performed.

As described above, when the operation switch is pressed, the stop operation is performed once, and after returning to the stop position, each operation is performed, and the same driving method can be used regardless of the previous operation.

The above driving method can be easily configured using a microcomputer.
Furthermore, although the above explanation is for the case where switching is performed using an operating switch, the same applies to pulse signals from a timer, controller, etc.

As is clear from the above embodiments, according to the present invention, it is possible to always return to the stopped position, regardless of the previous state, and furthermore, regardless of the previous state, the next instruction can be performed after the stopped state. It has now become possible to provide a tape recorder that is easy to operate and that can be entered into a specified operating state. Further, according to the present invention, there is no fear of malfunction and the tape is not damaged, and the structure has many excellent features that prevent it from becoming complicated.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention in a stopped state, FIGS. 2 and 3 are a plan view and side view showing its recording/playing state, and FIG. 4 is a plan view showing its queue or review state. 5 is a block diagram showing the drive section of this embodiment, FIG. 6 is a flowchart for explaining the operation, FIG. 7 is a block diagram showing the drive section of another embodiment, and FIG. 8 is its control. FIG. 7... Chassis, 9... Magnetic head, 29...
Solenoid, 30... Plunger, 32, 33...
...Switch, 36, 39...AND circuit, 37...
...OR circuit, 38, 41...Delay circuit, 40
...RS flip-flop, 44...driving transistor, 45... solenoid, 51... control section, 52... switch, 53-56... operation switch, 58... driving transistor, 59... solenoid.

Claims (1)

[Claims] 1 a movable member to which a magnetic head is attached; a driving means for moving the movable member from a stop position where the magnetic head is retracted from the magnetic tape to a recording/playback position where the magnetic head is in deep contact with the magnetic tape; A holding means for holding the magnetic head in a high-speed playback position where the magnetic head makes shallow contact with the magnetic tape, a detection means for detecting that the movable member is at a stop position, an operating means for a playback switch, a high-speed playback switch, etc., and the above-mentioned operating means. control means for driving and controlling the drive means based on the detection result of the detection means when the movable member is returned to the stop position; The driving means is controlled to immediately move the movable member to a recording/playback position or a high-speed playback position, and the detection means detects that the movable member is at a recording/playback position or a high-speed playback position and is at a stop position. When the operating means is operated in the absence of the movable member, the driving means is repeatedly controlled to be released and driven until the detecting means detects that the movable member has returned to the stopped position, and the movable member is returned to the stopped position. A tape recorder characterized in that the drive means is configured to drive and control the movable member to later move the movable member to a recording/playback position or a high-speed playback position.