JPH0310174B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a repeat playback device for a tape player or the like, and is suitable as a repeat playback device for a so-called LL device for language learning.

In general, when the repeat playback device of the LL device is pressed, the magnetic tape is rewound and a playback signal from the rewound magnetic tape is obtained, which is a so-called queue state. When it is detected that there is no trace of the playback signal in the current state, that is, a break in words, a blank space, for example, the beginning of the words "I am a boy", the magnetic tape is automatically determined by this detection. The magnetic tape is rewound again as described above by driving the magnetic tape at a high speed, and by pressing the operation button described above while listening to this reproduction signal, such as "I am a boy", while listening to this reproduction signal, for example, "I am a boy". It is known that it was made possible to do so.

In such a LL device, after listening to the playback signal,
After pressing the operation button until the next reproduction signal is automatically obtained, the learner also repeats and learns the words of the reproduction signal, and the next reproduction signal is automatically obtained as described above. The time it takes to obtain the above signal is not necessarily sufficient time for the above-mentioned recitation, and if the recitation is repeated many times, the next reproduction signal may be automatically obtained before it is finished. It has the disadvantage of being stored away.

Conventionally, in order to eliminate the above-mentioned drawbacks, the magnetic tape is rewound by pressing the operation button, and when the blank area is detected, the running of the magnetic tape is temporarily stopped, and the magnetic tape is set manually in advance. A device is known in which the next reproduction signal is automatically obtained after a certain period of time has elapsed.

By the way, if the recitation time is set in advance in this way, it is not necessarily suitable for recitation, and there is a drawback that excess or deficiency may occur.

The present invention provides a repeat playback device for a tape player or the like, in which a sufficient repeat time is obtained as described above, and the repeat time length can be manually selected as appropriate so that the repeat time does not become redundant. It is something to do.

FIG. 1 is a block diagram for clearly showing the configuration of the present invention.

When the repetitive playback operating means, such as a push button, is manually operated, this operation is detected and the rewinding means is operated, thereby rewinding the magnetic tape. In this state,
When a signal for instructing repeat playback is obtained, the magnetic tape running means is operated and a normal playback signal from the magnetic tape is obtained, or the pause means is operated and the running of the magnetic tape is temporarily stopped. will be stopped. The former case is a case where the operating means is not operated at the time when the signal for instructing repeat playback is obtained, and the latter case is a case where the operating means is continuously operated. In the latter case, if the operating means is set to a non-operating state during a temporary stop, the running means becomes operative, and the magnetic tape is run at a constant speed, thereby entering a reproduction state. Therefore, if you operate the operating means normally,
That is, unless the operation is to be continued until a signal for instructing repeat playback is obtained, the operating means will be brought into the playback state by this signal for instructing repeat playback, and the operating means will continue to be operated until a signal for instructing repeat playback is obtained. If this continues, the playback state is entered by stopping the operation of the operating means. In this way, the time from when the operating means is operated until the next reproduced sound is obtained, that is, the above-mentioned repeat time can be varied as appropriate by manual operation.

An embodiment of the present invention will be described below with reference to FIG. In FIG. 2, reference numeral 1 denotes a magnetic tape, and the tape is pressed against a capstan 2 rotating at a constant speed by a pinch roller 3 and run at a constant speed.
Further, this tape 1 is wound and rewound at high speed by a reel 4 (at this time, the pinch roller 3 is separated from the capstan 2). A magnetic head 5 is brought into contact with the tape 1 to obtain a reproduced signal from the tape. This reproduced signal is amplified by amplifiers 6 and 7 and output as audio from speaker 8. 9 is a control circuit, which is composed of a relay circuit, a logic circuit, a microcomputer, etc.
By operating the playback operation switch 10 or the like, a high level "H" is input from the power supply +B to the playback terminal via resistors R1 and R3, and as a result, the pinch roller 3 is pressed against the capstan 2 via the tape 1, and the reel 4 The drive system 11 for the tape 1 is controlled so that the tape 1 is driven to run the tape 1 at a constant speed. Reference numeral 12 denotes a rewind operation switch, and when this operation is performed, the drive system is controlled by the control circuit 9 so that the reel 4 is driven at high speed and the tape 1 is rewound. 13 is a temporary stop operation switch;
Reference numeral 14 indicates a stop operation switch, and 15 indicates a fast forward operation switch.

The above configuration is well known as a tape recorder (player). Reference numeral 16 indicates a push button for repeated playback operation. By pressing this push button 16, switches 17 and 18 are both switched to the side shown by the broken line, and by releasing the push button 16, they are returned to the side shown by the solid line again. It is configured as follows. 19,
20, 21, 22 are differentiating circuits composed of resistors and capacitors, 24, 25, 26 are AND gates, 27, 28 are OR gates, 29 is an RS flip-flop, 31, 42 are inverters, and 32 is a delay circuit. . Reference numeral 33 denotes a blank detection circuit for detecting a break in the sound in the reproduced signal that has passed through the amplifier 6, and is composed of an integrating circuit and the like as is well known. 34
is a counter "0" detection circuit, which detects when the display of the well-known tape counter 35, which counts up (or down) as the tape runs, reaches zero. The detection outputs of these detection circuits 33 and 34 are selectively supplied to the differentiating circuit 20 via a manual changeover switch 36. 37
indicates a microphone, and the audio signal from the microphone is amplified by an amplifier 38,
Then, envelope detection is performed by the diode 39, which is input to the comparator 40 via a filter, and the presence or absence of sound from the microphone 37 is detected. This detection output is supplied to the differentiating circuit 22 via the inverter 42 when the switch 41 is on.

In the repeat playback device configured as described above, the switch 36 is switched to the solid line side, and the switch 41 is switched to the solid line side.
When push button 16 is pressed with 1 open, switches 17 and 18 are switched to the solid line side, and switch
8, a voltage is applied from the power supply +B to the differentiating circuit 19, this is differentiated by the differentiating circuit 19, and "H" is applied to the rewind terminal of the control circuit 9, in the same way as when the switch 12 is closed. The magnetic tape 1 is rewound.

When a blank portion of the signal reproduced from the reproduction head 5 is detected by the detection circuit 33 during this rewinding,
"H" is input to the differentiation circuit 20, which is differentiated and applied to the AND gates 24 and 25. At this time, if the push button 16 is released, the power supply +B is supplied to the AND gate 24 via the switch 17.
"H" is applied to the inverter 31, and a low level "L" is applied to the AND gate 25 via the inverter 31. Therefore, the differentiated pulse from the differentiator circuit 20 passes through the AND gate 24 and the NOR gate 27 and is inputted as a pulse at the reproduction terminal "H" of the control circuit 9 described above. This causes the tape to run at a constant speed, and a reproduced signal from tape 1 is obtained.
If the push button 16 is pressed during this playback, the tape 1 is rewound in the same manner as described above, and during this rewinding, the above-mentioned reproduced words can be recited.

If the push button 16 is pressed when the blank area is detected, an "H" signal is applied to the AND gate 25 via the inverter 31, and the differential pulse passing through the differentiation circuit 20 is applied to the AND gate 25. The signal passes through and is input to the temporary stop terminal of the control circuit 9, and the running of the tape 1 is temporarily stopped in the same manner as when the switch 13 is closed. The RS flip-flop 29 is set by the output of the AND gate 25, and its output becomes "H", and the AND gate 26
One of the inputs becomes "H". When the push button 16 is released with "H" being input to the AND gate 26 as described above, the switch 17 returns to the solid line side, and the differential pulse via the differential circuit 21 is transmitted to the OR gate 28, the AND gate 26, and the OR gate. 27 to the playback terminal of the control circuit 9, and the tape 1
is driven at a constant speed and enters the regeneration state. Further, the output of the AND gate 26 passes through the delay circuit 32, is inputted to the RS flip-flop 29, and is reset. In this way, the words played back can be recited during the pause period, including while the tape 1 is being rewound, and by selecting the time to release the push button 16, the replay period can be selected as appropriate. can.

In the above embodiment, the magnetic tape 1 is in the rewinding state.
When a blank portion is detected in the reproduced signal from the tape, an "H" level is applied to the differentiating circuit 20, but by switching the switch 36 to the dashed line side, the tape counter 35 displays zero. At times, an “H” level can also be applied to the differentiating circuit 20.

If the switch 41 is closed, when the recitation practice is finished and the audio input from the microphone 37 stops in the above-mentioned pause state, the output of the inverter 42 becomes "H", and the above-mentioned push button 1
Tape 1 is run at a constant speed in the same manner as when 6 is released.

In the above embodiment, the interlocking switches 17 and 18 are operated by the push button 16, but instead of these switches 17 and 18, a single switch 43 may be used as partially shown in FIG. good. In this figure, 44 is an inverter, and a and b are terminals corresponding to the outputs of switches 17 and 18, respectively.

Furthermore, in the above embodiments, the continuation detection means, gate means, etc. are constituted by logic circuits, but they may be replaced by a microcomputer.

FIG. 4 shows the hardware when a microcomputer is used, and the same reference numerals as in FIG. 2 or 3 indicate the same components. Reference numeral 44 denotes a well-known microcomputer, which is composed of a CPU 45, a memory 47 including a ROM 46, etc., and outputs signals related to on/off of the switch 43, a blank area detection signal via the switch 36, and when the switch 41 is closed. A signal indicating that the sound from the microphone 37 has disappeared is inputted via a well-known input port 48, and output data based on this input data is obtained by a program stored in the ROM 46 of the memory 47. This is supplied via the output port 49 to the playback terminal, rewind terminal, and pause terminal of the control circuit 9.

A flowchart of a program for controlling the microcomputer 44 and its related operations is shown in FIG. ~ in the figure indicates each step of the flowchart. When this program starts (steps), the program checks whether the push button 16 is pressed or not, that is, whether the switch 43 is pressed or not.
The question is whether or not it is turned on. If it is pressed, "H" is input to the rewind terminal of the control circuit 9, and the tape 1 is rewound (step).
During this rewinding, a repeat instruction signal, ie, a blank area detection signal or a counter "0" detection signal, is obtained (step). At this point, it is checked whether the push button 16 is pressed (step). When the push button 16 is pressed, "H" is supplied to the playback terminal of the control circuit 9, and the tape 1 is run at a constant speed to enter the playback state (step). If the push button 16 is pressed during this playback (step), the rewinding state is entered again (step).

In the above step, if the push button 16 is not pressed, the temporary stop terminal of the control circuit 9 becomes "H" and the tape 1 is temporarily stopped (step). When the push button 16 is no longer pressed during this pause (step), the playback operation of step starts. In the above step, when the push button 16 is pressed, the paused state is maintained (when the switch 41 is off). switch 41
is turned on, press button 16 in step
When is pressed, the step asks whether the sound from the microphone 37 has stopped, and if the sound has stopped, the step moves to the playback state, and if not, the paused state is maintained. be done.

As described above, the present invention allows the operation of a single operating means such as the push button 16 to
The replay time during repeated playback can be appropriately selected, and by applying this to the LL device, the device becomes easy to use.

[Brief explanation of the drawing]

Fig. 1 is a diagram corresponding to claims, Fig. 2 is a configuration diagram showing one embodiment of the present invention, Fig. 3 is a circuit diagram showing main parts of another embodiment, and Fig. 4 is a diagram showing other embodiments using a microcomputer. FIG. 5 is a flowchart explaining the operation of FIG. 4. 1...magnetic tape, 2...capstan, 4...
... Reel, 5... Playback head, 9... Control circuit,
11... Tape drive system, 16... Push button.

Claims (1)

[Claims] 1. A first running means for causing the magnetic tape to run at a constant speed, a second running means for rewinding the magnetic tape, a signal reproducing means for reproducing signals from the running magnetic tape, and a first running means for causing the magnetic tape to temporarily stop running. a temporary stop means for stopping the magnetic tape; a temporary stop detection means for detecting the temporary stop state; and a blank section of the magnetic tape during rewinding or a running count of 0 for the tape.
an instruction signal detecting means for obtaining a signal for instructing repeated reproduction when detecting the same; an operating means for repeating reproduction; detecting that the operating means is operated and operating the second running means; a rewinding operation detection means, a continuation detection means for detecting that the operation means is being continued, and a non-operation detection means for detecting that the operation means is no longer operated;
A first device that allows an instruction signal detected by the instruction signal detection means to pass and operates the temporary stop means only when the operation of the operation means is detected by the continuation detection means.
and a gate means for allowing the instruction signal detected by the instruction signal detection means to pass only when the operation of the operation means is not detected by the continuation detection means, and the first traveling means. a second gate means for operating the vehicle; and a detection signal from the non-operation detection means is allowed to pass only when the temporary stop detection means detects that the vehicle is temporarily stopped, and the first traveling means is operated. A repeat playback device for a tape player or the like, characterized in that it is equipped with a third gate means.