JPH02781B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape deck control device, and particularly to a tape deck control device intended for use in a vehicle.

At present, most of the tape deck control devices installed in vehicles are based on general household tape deck control devices. However, in the future, we should develop new tape deck control devices specifically for in-vehicle use.

Therefore, an object of the present invention is to propose a tape deck control device particularly suitable for use in a vehicle.In particular, based on the viewpoint of use in a vehicle, it is an object of the present invention to improve the operability of the switch and to prevent inconveniences caused by erroneous operation of the switch. It is to be. However, it goes without saying that it can also be used for general household use.

In accordance with the above object, the present invention comprises several plungers for driving a tape deck, several operating electric switches for operating the tape deck, and a logic control circuit for coordinating these plungers and electric switches. It is characterized in that it is configured as follows.

The present invention will be described below with reference to the drawings.

First, an overview of the tape deck control device according to the present invention will be described.

(1) Tape decks are mainly controlled electrically, not mechanically. This is in consideration of the fact that it is used under adverse conditions with a lot of vibration, etc., and that operations tend to be rough.

(2) The driving operation of the tape deck should not be a direct mechanical operation, but should be replaced with an electric switch operation that does not require operating force if possible. this is,
This is to ensure safety while driving a car. This is also to increase the degree of freedom in design.

(3) Can be used for both auto reverse and non-reverse.

(4) A lack of necessary operation that would occur due to the elimination of direct mechanism operation can be electrically covered. For example, when rewinding the tape, the pinch roller is retracted after switching the idler.

(5) Furthermore, the tape deck control device according to the present invention reduces the number of electric switches as much as possible from the viewpoint of being mounted on a vehicle.

That is, the switch is used for both program switching (that is, switching tracks in the play state) and stop. This is aimed at improving operability. (6) Since it is an electrical switch, there is a safeguard against double pressing or erroneous operation, for example. This is because such erroneous operations are particularly likely to occur while driving a car. This is also to prevent tape breakage or damage to the tape drive mechanism due to alternate operations of the fast forward switch and rewind switch.

(7) FF, REW PLAY from FF or REW
(STOP) and PROGRAM switching are treated as a combination of two plunger drive controls: high-speed drive/constant-speed drive switching control and tape running direction switching control, and each of the above main operations can be handled. This control device outputs a switch input signal as a signal for performing the two plunger drive controls using a simple and compact logic circuit configuration.

An overview of the tape deck control device described above is given in Part 1.
A more concrete understanding can be obtained from an example of an operation time chart shown in the figure. Each switch used in the following explanation of the present invention is turned on by pressing it with a finger, and when the switch is released, the switch automatically returns to the previous state. . In FIG. 1, column a shows the ON operation of the FF/SW. What is FF/SW?
It is an abbreviation for Fast Forward Switch. In other words, if the FF/SW is turned on while the tape is playing in the right (or left) direction (a state in which audio is output from the cassette tape), the tape will be fast-forwarded in the right (or left) direction.
Column b shows the ON operation of REW/SW. REW・
SW is an abbreviation for RewindSwitch. In other words, if the REW SW is turned on while the tape is being played in the right (or left) direction, the tape will be rewound in the left (or right) direction. Column c shows the ON operation of STOP/PRO SW. STOP/PRO SW is a switch that can be used to stop (stop is to return the fast-forward or rewind state to the normal performance state (play)) or to switch programs. If you turn on this STOR/PRO SW when the tape is currently playing in the right or left direction, the program will be switched and you can play the audio of another track. In other words, track switching is performed.

The track switching method in the present invention is as follows:
For example, as shown in Fig. 4, reading sensors are provided in the head corresponding to the position of each track on the tape, and the number of reading sensors corresponding to the number of tracks is set in the head. It may be something that activates a sensor.

On the other hand, when in FF state or RZW state
When STOP/PRO SW is turned on, the FF
state or RZW state is stopped and switched to play state. Column d indicates the presence or absence of T.END, that is, the tape end. The tape is
When the end is reached by play, REW, or FF, an E (end) signal is output.

Column e shows the on/off operation of the first plunger PL1. The first plunger PL1 moves the pinch roller of the tape deck forward and backward, and when moving forward, the tape is brought into close contact with the captan for normal play. When reversing, remove the tape from the capstan and perform FF or REW high-speed winding. Column f shows the on/off operation of the second plunger PL2. The second plunger PL2 selectively brings an idler that transmits the rotation of the motor into contact with either the right reel or the left reel of the cassette,
The tape is caused to run either to the right or to the left, which is the opposite direction to the previous tape running direction. This does not matter whether it is play or high speed winding (FF or REW). Column g indicates the operating mode of the tape deck, P indicates the play state, . . . indicates various states other than play.

Mode...First, when the FF/SW is turned on after play _P1 , the plunger PL1 operates and becomes high-speed fast forward. Since it is FF at this time, the tape is wound in the same direction as the previous play state. In other words, plunger PL2 is inactive.

Mode P ₂ ...The mode stops FF when STOP/PRO SW is turned on, thereby immediately entering the play state.

Mode...When a request to rewind occurs in the middle of mode P ₂ , turn on REW/SW. As a result, the plunger PL2 is first operated to change the position of the idler and the tape running direction, and at the same time, the plunger PL1 is operated to move the pinch roller backward. High-speed REW winding is performed here. Incidentally, the plunger PL2 is a toggle, and the state is changed with one pulse, and thereafter, the state is maintained until the application of the next one pulse. REW mode is canceled by turning on STOP/PRO SW. That is, the previous play P ₂
The state will be restored. This state is denoted by _P3 .
For this reason, first operate the plunger PL2 to change the position of the idler and return it to the running direction as before, and at the same time deactivate the plunger PL1.
Move the pinch roller forward and start playing.

In other words, if you turn on STOP/PRO・SW after the mode, the play direction will be reversed and play P ₃
Execute. However, chattering is prevented by C and R at 45 in FIG.

Mode P ₄ ...When a request to reverse and listen to the audio of another track occurs during Mode P ₃ play, turn on STOP/PRO SW. Since this is on during play, the circuit determines that the PRO SW for changing the program is on. For this reason, plunger PL1 remains inoperative (plays), plunger PL2 is operated, the idler is switched, and the tape running direction is reversed.

As a result, the audio of another track can be played.

Mode...If a request for fast forwarding occurs while playing mode _P4 , the FF/SW is turned on and the plunger PL2 remains inoperative (the same direction of travel remains) and the plunger PL1 is operated. In other words,
Move the pinch roller backwards and fast forward.

Mode _P5 ...When the end of the tape is reached in mode FF, a tape end signal (E signal) is generated, operates plunger PL2 to reverse the tape running direction, and also disables plunger PL1. Start normal play from FF. This play is on a different track from the P ₄ play and is an auto-reverse.

Mode P ₆ ...When the tape ends again in this play P ₅ , a tape end signal (E signal) is generated, and plunger PL2 is operated while plunger PL1 remains inactive (play mode), and the tape end is reached again. Reverse running direction. At this point, auto-reverse is performed and the vehicle returns to its original track.

Mode...If a request to rewind occurs during play _P6 , first turn on the REW SW, operate plunger PL2 to reverse the tape running direction, and operate plunger PL1 at the same time.
Make REW high-speed winding.

Mode _P7 ...When the mode REW returns to the tape end, the plunger PL2 is operated to make the running direction the same as in the previous play, and at the same time, the plunger PL1 is deactivated to return to play. Therefore, play P ₇ is the same as play P ₆ .

FIG. 2 is a plan view showing an example of an operation panel that produces the operating modes described with reference to FIG. 1. As is clear from this figure, this operation panel is extremely simple, increases the degree of freedom in designing the instrument panel of a vehicle, and provides good operability. In this figure, 21 is REW/SW, 22 is FF/SW, 23 is
It's STOP/PRO/SW, and that's all.
Note that 24 is a track indicator for auto-reverse, and is provided as necessary.

FIG. 3 is a block diagram showing an example of a configuration for implementing the tape deck control of the present invention described above.
In this figure, 31 is the solenoid of plunger PL1, 32 is the solenoid of plunger PL2, and 33 is the solenoid of plunger PL1.
FF・SW, 34 is REW・SW, 35 is STOP/
PRO SW, 36 is a tape end detector, which is the part that appeared in the immediate explanation. Note that the following operations are performed using negative logic.

By the way, here plungers PL1 and PL2
Check the operation.

While the solenoid 31 shown in FIG. 3 is not energized, in the mechanism of a known tape recorder (not shown), the head and pinch roller are moved forward and pressed against the tape by the head stand.
In particular, the pinch roller is in a state where the tape is pinched between it and the capstan shaft. This state corresponds to the play state, and the tape is held between the pinch roller and the capstan shaft, receives a large driving load, and runs in accordance with the rotational speed of the capstan shaft.

The head stand is attached to one end of the plunger PL1, and while the solenoid 31 is energized, the head stand is pulled away by the plunger PL1 in a direction opposite to the tape. As a result, the head and pinch roller are moved backward and separated from the tape and the capstan shaft, and the driving load on the running tape due to the above-mentioned pinching is reduced. Therefore, the tape rotates at high speed in accordance with the rotational drive of the reel.

Solenoid 31 switches the tape running speed.
This is carried out only after the pinch roller is moved back.

On the other hand, the solenoid 32 shown in FIG.
The running direction of the tape is reversed by excitation for a predetermined period of time.

First, if you load a cassette tape into the tape deck, even if SW33, 34, and 35 are all OFF, the switch on the tape deck will turn ON when the cassette tape is inserted, so the power will be turned off.
It turns on and the motor starts, so you can start playing.

If you turn on FF SW33 here,
A flip-flop (F/F1) 42 is set via an AND gate 41, a transistor 43 is turned on, a relay 44 is energized, and a plunger (PL1) 31 is operated. At this point, the pinch roller retreats, and high-speed fast forwarding of the FF is performed.

In order to cancel this FF operation, STOP/PRO/
Turn on SW35. The ON signal of SW35 is CR
A flip-flop (F/
F1) is applied to the reset input of 42. As a result, flip-flop 42 is reset, transistor 43 is turned off, and plunger (PL1) 3 is turned off.
1 is inactive and the pinch roller moves forward to enter play. This play has the same running direction as FF.
Note that the CR differentiation circuit 45 is a circuit for preventing chattering of the SW 35.

Conversely, if you want to rewind while playing,
Turn on REW SW34. This on signal is
Through the OR gate 51, the flip-flop (F/
F2) is applied to 52 to set it. The Q ₂ output (currently at "H") of this flip-flop 52 becomes an "L" level signal via the inverter 53 and then passes through the CR differentiation circuit 54 to the AND gate 55.
leading to. As a result, the AND gate 55 outputs “L”
A differential pulse of the level peak is output, and converted by the monostable circuit 55 into a constant pulse P2 of "H" level. Note that P1 indicates the differential pulse that is input to the circuit 56. Due to this pulse P2, via the transistor 57 and the relay 58,
The plunger (PL2) 32 is sufficiently excited for the predetermined time determined by the output of the monostable circuit 56. As a result, the position of the idler changes and the tape runs in the reverse direction. Also, since we are now in a state where REW should be performed, the plunger (PL1)
31 to move the pinch roller backward. Therefore, since it is currently in the play state, one input of the OR gate 51 is connected to the flip-flop 42.
Since L, which is the output of Q ₁ , is input, REW・
When the SW 34 is turned on, "L" is also input to the other input of the OR gate 51, so the output of the OR gate 51 becomes "L", and this "L" signal is applied to one input of the AND gate 82. Ru. On the other hand, FF・
Since SW33 is open, the other inputs of AND gate 82 are "H", so this AND
The output of gate 82 becomes "L", thereby setting flip-flop 83, so that the _Q4 output of flip-flop 83 becomes "H" and is applied to one input of NAND gate 62. In this state, the output pulse P ₂ of the circuit 56 passes through the delay circuit 61 on the other hand, becomes the pulse P ₃ , and is applied to the other input of the NAND gate 62, so that an "L" output is generated from the NAND gate 62. This signal passes through an AND gate 41 and sets a flip-flop (F/F1) 42. A plunger (PL1) 31 operates here through a transistor 43 and a relay 44. Then, the REW operation starts. Note that the delay circuit 61 was provided because
This is to cause the sequence of reversal of the tape running direction by driving the plunger PL2 for a predetermined period of time to start driving the plunger PL1 to cause the tape to run at high speed as the pinch roller retreats at the start of REW. In other words, the tape can stably enter the REW state due to the time difference from PL2 to PL1. However, this has also been done with conventional mechanical mechanisms, and is simply realized electrically. Further, in the CR differentiation circuit 54, when the _Q2 output of the flip-flop 52 is turned on and released, the AND gate 55
This is provided to prevent this from remaining closed via the inverter 53 and other AND conditions not being satisfied.

Next, in order to cancel the REW operation, press STOP/
Turn on PRO SW35. In order to restore the original play state by turning on SW35, first, plunger PL1 is made inactive (the pinch roller is advanced to bring the tape running speed to the play state speed), and then plunger PL2 is set to It is necessary to drive the tape for a predetermined period of time (by switching the idler to its original position, etc., in the tape running direction). First, the ON signal of SW35 resets the flip-flop 42, so the transistor 4
3. Deactivate the plunger (PL1) 31 via the relay 44. The tape is now ready for play. On the other hand, the ON signal of the SW 35 goes through the CR differentiation circuit 45 and the inverter 71 and becomes “H”.
The NAND gate 72 outputs a differential pulse of the "L" level peak, which passes through the AND gate 55, and as described above, via the circuit 56, transistor 57, and relay 58.
The plunger (PL2) 32 is driven for the predetermined time to reverse the tape running direction. Thus
REW is canceled and the original play state is restored.

At this point, the STOP/PRO SW 35 has returned to its original position, so the inverter 71 is outputting an "L" signal, so both the NAND gates 72 and 73 are outputting an "L" signal.
It is never output to gate 55.

In addition, track switching is also possible with STOP/PRO/SW.
35, but this is in the play state
Because it is an ON operation of STOP/PRO SW35,
Operation of delay circuit 91 and stability circuit 92 (described later)
As a result, the flip-flop (FF2) 52 is reset, and the flip-flop (FF3) 81 is in the set state. Therefore, STOP/PRO・
By turning on SW35, inverter 7
1 to "H" is applied to one input of the NAND gate 73, and "H" which is the _Q3 output of the flip-flop 81 is input to the other input of the NAND gate 73. An output of "L" is output, which is supplied to the stabilizing circuit 56 through the gate 55, and operates the plunger (PL2) 32 as described above to reverse the tape running direction.

However, at this time, the _Q4 output of the flip-flop 83 is reset and becomes "L", so the H signal ( _P3 ) output from the delay circuit 61 is a NAND signal.
Since the signal does not pass through the gate 62, "L" is not input to the AND gate 41, so there is no change in the tape running speed.

The above is the operation of the main part in tape deck control, and the auxiliary operation will be explained below.

The aforementioned OR gate 51 works together with the aforementioned flip-flop 52 to also perform the function of preventing double pressing of SW33 and SW34.

That is, when SW33 is turned ON, the flip-flop 42 is set and the _Q1 output becomes "H".
Since one input of the OR gate 51 becomes "H", a negative logic ("L" level) signal input to the other OR gate cannot pass through the OR gate 51. Therefore, the "L" 3-bell signal generated by turning on the SW 34 is blocked by the OR gate 51.

Also, when not in fast forward FF state, switch SW34.
When turned on, the flip-flop 52 is set, and even if SW33 is turned on subsequently, the _Q2 output of the flip-flop 52 remains unchanged. The _Q2 output of the flip-flop 52 goes through the differentiating circuit 54 to the PL2 drive circuit, so the Q2 output of the flip-flop 52
PL2 is not driven unless there is a change in _Q2 output.

Note that in the REW state, the flip-flop 42 is set via the monostable circuit 56, delay circuit 61, NAND gate 62, and AND gate 41, so even if SW 33 is turned on, the
There is no change in condition.

Flip-flop (F/F3) 81 and
NAND gate 73 has STOP/PRO SW ON
When this occurs, there are two functions that may be activated by the SW35, depending on whether the current state is fast-forward FF and high-speed winding REW, or the play state, namely, STOP (fast-forward FF and high-speed winding and transfer from REW state to play state)
and PRO (reverses the tape running direction).

First, in the FF state or REW state
The case where STOP/PRO SW35 is turned on will be described.

Also, in the REW state, STOP/PRO/
Turning on the SW 35 also means performing the STOP operation (transferring from the high-speed winding REW state to the play state before the REW state).

As can be seen from the operation shown in Figure 1 above, in the FF state, STOP/PRO SW35 is
Turning it ON means performing the above-mentioned STOP operation (transferring from the fast forward FF state to the play state).

To set the above fast forward FF state, press SW33.
As a result of turning on, via the AND gate 82,
The flip-flop (F/F3) 81 is reset, and the _Q3 output of the flip-flop (F/F3) 81 becomes "L", and one input of the NAND gate 73 becomes "L", so that the other input of the NAND gate 73 becomes "L". An "H" level signal input to the input terminal of the terminal cannot pass through. Alternatively, to explain the case where the SW 34 is turned on to bring the high-speed winding REW state into the above state, since the flip-flop 42 is currently in the play state, the flip-flop 42 is in the reset state, so the _Q1 output of the flip-flop 42 is "L". , which is input to one side of the OR gate 51. Here, when the REW SW 34 is turned on, "L" is input to the other side of the OR gate 51, so the output of the OR gate 51 becomes "L" and is applied to one input of the AND gate 82. Also FFSW33
Since is open, the other input of the AND circuit 82 has an "H" level, so the AND circuit 8
The output of flip-flop 2 becomes "L" and the flip-flop 81 is reset, and the flip-flop (F/F3) 8
1's Q ₃ output becomes "L", and one input of the NAND gate 73 becomes "L". On the other hand, the flip-flop 52 is set because the "L" output of the OR gate 51 is input, and its output _Q2 becomes "H".
This passes through the gate 55 and activates the solenoid 32, so that the tape running direction is reversed.

Further, the "L" signal passing through the gate 55 sets the flip-flop 42 via the delay circuit 61, gate 62 and gate 41, so that the solenoid 31 is activated and fast-forwarding of the tape is executed.

In this way, once the REW state is reached,
When the REW SW 34 is released from the pressed state and returns to its original state, an "H" signal is input to one end of the OR gate 51.
The output of the OR gate 51 becomes "H" regardless of whether the input at the other end is "L" or "H". Since the FFSW 33 is open, an "H" signal is input to the input of the gate 82, so the output of the gate 82 also becomes "H", but this does not affect the _Q3 output of the flip-flop 81.

Therefore, even if the REW/SW 34 returns to its original state, the state of REW remains unchanged.

In such situations, STOP/PRO・SW35
ON and the corresponding NAND gate 7 is connected via the inverter 71.
The "H" level signal input to the other input terminal of NAND gate 73 cannot pass through the NAND gate 73.

In other words, in the FF state, STOP/PRO/
When SW35 is turned on, “H” is input to the other input terminal of this NAND gate 73.
The high level signal cannot pass, and the "H" pulse outputted via the inverter 71 is not transmitted to the AND gate 55. Therefore, the tape running direction is not reversed.

Also, even in the REW state, STOP/PRO/
Even when SW35 is turned on, “H” is input to the other input terminal of this NAND gate 73.
The level signal cannot pass through the inverter 7.
The "H" pulse outputted through the gate 1 is not transmitted to the AND gate 55.

Furthermore, when the REW SW 34 is turned on as described above, the flip-flop circuit 52 is set, and its _Q2 output is connected to the gate 55 - delay circuit 61 - NAND.
Since the flip-flop circuit 42 is set through the gate 62-gate 41 loop, the _Q1 output becomes "H" and operates the solenoid 31, but "H" is input to all of the flip-flops 52, 81, and 83. Therefore, it does not affect their output in any way.

However, in the REW state, STOP/PRO/
When the SW 35 is turned on, it is necessary to return the tape running direction to the original state before the REW operation in order to perform the STOP operation (transfer from the REW state to the play state before the REW operation). (In other words, as explained earlier with reference to FIG. 1, in the control circuit of the present invention, each time the REW operation is performed,
The running direction of the tape is reversed, and the tape is switched to a play state in which the direction is opposite to the winding direction in the REW state. ) As mentioned above, in the REW state, the flip-flop 81 is reset and therefore the _Q3 output is "L", so in the REW state
STOP/PRO SW 35 is turned on, flip-flop 42 is reset, and _Q1 output goes “L”.
Even so, since the "H" level signal is output from the OR gate 51, there is no change in the outputs of the flip-flops 52 and 81 as described above.

Furthermore, since no "L" level output is output from the gate 73, the solenoid 32 is not activated, and therefore the tape running direction is not reversed.

However, it is necessary to reverse the direction of tape travel, and for this purpose a NAND gate 72 is provided. That is, in the REW state, the output of the flip-flop 52 is "H", so the NAND
When one input of the gate 72 becomes "H", the "H" level signal input to the other input terminal of the NAND gate is allowed to pass, and when the SW 35 is turned on, the NAND gate 72 becomes "H". The output becomes "L", and the plunger PL2 is driven for the predetermined time. Thus, in the REW state
When STOP/PRO・SW35 is turned on,
The running direction of the tape is reversed. (Also, since the STOP/PRO SW 35 is turned on at the same time, an "L" level signal is applied to the reset terminal R1 of the flip-flop circuit 42, the flip-flop circuit 42 is reset, and the driving of the plunger PL1 is stopped. , the tape running speed is switched to low speed.) On the other hand, in the play state, the flip-flop 81
has already been set via the delay circuit 91 and monostable circuit 92, and _Q3 is at "H", so
In the play state, when the SW 35 is turned on, an "H" level pulse outputted via the inverter 71 is transmitted via the NAND gate 73 and the AND gate 55 as a signal to drive the plunger PL2 for the predetermined time. . That is, by turning on SW35 in the play state,
The tape running direction is reversed and a different track is played. This corresponds to program switching.

In the REW state, the monostable circuit 92 detects the falling edge of the output _Q1 of the flip-flop (F/F1) 42,
That is, due to the transition of the tape from a high-speed running state to a constant-speed running state, the flip-flop (F/F2) 5
Reset 2 and flip-flop (F/F2)
It is provided to return the output Q ₂ of the flip-flop 52 to "L" and set the flip-flop (F/F3) 81 to return the output Q ₃ of the flip-flop (F/F3) 81 to "H".

In addition, in the FF state, the flip-flop (F/
Since F2) 52 is not set, the output of the monostable circuit 92 is the flip-flop (F/F3) 8.
Used only for set 1. Furthermore, the delay circuit 9
1, the output of the monostable circuit 92 is delayed by a predetermined period of time from the fall of the output _Q1 of the flip-flop (F/F1) 42. This causes the flip-flop (F/F2) to switch from the REW state to the play state.
52's output _Q2 for the delay time of the delay circuit 91, the STOP/
This is to ensure that the REW state is released by the output of the PRO SW 35 or the tape end detector 36, that is, the running direction of the tape is switched.

Here, the roles of the flip-flop (F/F4) 83 and the NAND gate 62 will be explained.

Flip-flop 83 outputs its _Q4 output.
It is applied to one input terminal of the NAND gate 62, and the _Q4 output corresponds to the "H" level signal when the "H" level signal is applied to the other input terminal of the NAND gate 62. It is controlled whether or not the NAND gate 62 can output an "L" level signal.

Generally, when the flip-flop 83 is set, its _Q4 output is "H", so one input of the NAND gate 62 is "H".
Therefore, in response to the “H” level signal input to the other input terminal of the NAND gate 62, it goes “L”.
A level signal is output from the NAND gate 62. Furthermore, when the flip-flop 83 is reset, its _Q4 output is "L", so one input of the NAND gate 62 is "L".
Therefore, regardless of the level of the signal input to the other input terminal of the NAND gate 62, the NAND
The output of gate 62 remains at "H" level.

Now, flip-flop 83 applies the output of AND gate 82 to set input S4, so when SW33 is turned on,
When turned on, the output of the AND gate 82 becomes "L", thereby setting the flip-flop 83, and the one input of the NAND gate 62 becomes "H", and the output is input to the other input terminal. An "L" level signal is output from the NAND gate 62 in response to the "H" level signal.

Therefore, in the fast forward FF state or the high speed winding REW state, the NAND gate 62
An "L" level signal is output from the NAND gate 62 in response to the "H" level signal input to the other input terminal of the flip-flop circuit 42, and this output is sent to the set input S1 of the flip-flop circuit 42 via the NAND gate 41. applied.

When the SW 33 is turned on to enter the fast forward FF state, an "L" level signal is immediately applied to the set input S1 of the flip-flop circuit 42 via the AND gate 41, and the flip-flop circuit 42 is set. ,above
The "L" level output of the NAND gate 62 has no effect, but when the SW 34 is turned on to enter the high-speed winding REW state, the SW 3
The “L” level signal from 4ON is the OR gate 5.
The flip-flop circuit 52 is set via the flip-flop circuit 52, and the _Q2 output of the flip-flop circuit 52, which has reached the "H" level, is passed through the inverter 53, the differentiating circuit 54, the AND circuit 55, the monostable circuit 56, and the delay circuit 61. is applied to the other input terminal of the NAND gate 62 as an "H" level signal, and is output from the NAND gate 62 in the manner described above in response to this signal.
The "L" level signal applied to the set input S1 of the flip-flop circuit 42 via the gate 41 sets the flip-flop circuit 42 at this time, and the flip-flop circuit 42, which has become "H" level, is set at this time. Q ₁ output is relay 4
4 to energize the solenoid 31 to activate the plunger.
Drive PL1 to increase tape running speed.

In the play state, the flip-flop 83 is reset via the differentiating circuit 45 by turning on the SW 35 when switching to the play state, and as one input of the NAND gate 62 becomes "L" level, Applicable regardless of the level of the signal input to the other input terminal above.
The output of the NAND gate 62 remains at the "H" level, and the flip-flop circuit 42 is not set by the output of the NAND gate 62.

Detecting the end of the tape by the tape end detector 36 described above is functionally equivalent to releasing the REW or FF state and deactivating the plunger (PL1) to enter the play state.
The previously mentioned flip-flop (F/F1) 42 and flip-flop (F/F2) 52 are reset via diodes 93 and 94.

In the above specific example, the delay circuit 91 and the monostable circuit 92 perform subsequent processing by detecting the fall of the _Q1 output of the flip-flop 42.
By using a PNP type circuit and using means such as using the _Q1 output of the flip-flop 42, the delay circuit 91 and the monostable circuit 92 can be activated by detecting the rising edge of the _Q1 output of the flip-flop 42. It is possible. As explained above, according to the present invention, a completely new tape deck control device having the functions of items 1 to 7 mentioned above and particularly suitable for use in a vehicle is realized.

[Brief explanation of drawings]

FIG. 1 is an operation time chart for explaining an example of the operation mode of the tape deck control device according to the present invention, and FIG. 2 shows an example of an operation panel that cooperates with the tape deck control device according to the present invention. Plan view,
FIG. 3 is a block diagram showing an example of the configuration of a tape deck control device according to the present invention. FIG. 4 is a diagram showing an example of a head switching method used in the tape deck control device according to the present invention. In the figure, 31 is a plunger (PL1), 32
is plunger (PL2), 33 is FF/SW, 34 is
35 is a STOP/PRO SW, 36 is a tape end detector, and 42, 52, 81 and 83 are flip-flops.

Claims (1)

[Claims] 1. A first flip-flop unit that outputs a tape high-speed drive signal in response to a set signal to alternatively set the tape running speed to either high speed or play speed. 42, switching means 44, 31 for switching the tape running speed according to the high-speed drive signal, and outputting a first tape running direction reversal signal according to the set signal to set the tape to be in a high-speed rewinding state. The second flip-flop section 52
a fast-forward switch 33 that supplies a set signal to the first flip-flop section 42; a rewind switch 34 that supplies a set signal to the second flip-flop section 52; and the high-speed drive in the first flip-flop section 42. Circuits 91, 92 for detecting the inversion of the signal from the high speed state to the play speed state, and for detecting the delay and either the rise or fall of the signal.
It is open from the time of the output of the circuits 91 and 92 that detect the delay and one of rising or falling until the high-speed drive signal is output again, and is closed during the other time, and the output is connected to the second one. While the first gate 73 serves as a tape running direction inversion signal and the first tape running direction inversion signal is output from the second flip-flop section 52, the input signal is passed through and is output as a third tape running direction inversion signal. a second gate 72 for output; a stop/program switch 35 for setting the first flip-flop section 42 to the play speed state and inputting a signal to the first and second gates 73, 72; , switching means 58, 32 for switching the tape running direction according to the first, second and third tape running direction reversal signals; and the first flip-flop circuit section for delaying the first tape running direction reversal signal. 42 and a delay circuit 61 for outputting a set signal, and the outputs of the circuits 91 and 92 for detecting the delay and either rising or falling also set the second flip-flop section 52 to a state other than rewinding. A tape deck control device characterized by: 2. The tape according to claim 1, wherein the input from the rewind switch 34 is passed through a third gate 51 which is closed when the first flip-flop section 42 is in a high speed state.
Deck control device. 3. Circuits 91 and 92 for detecting the input line of the stop and program changeover switch 35, the delay, and either rising or falling.
2. The tape deck control device according to claim 1, wherein the output of a tape end detector 36 for detecting a tape end and outputting a signal is connected in parallel to each of the outputs of the tape deck controller.