KR930007792B1 - Partition repeat recoding control equipment by single key for studying cassette tape - Google Patents

Abstract

The apparatus rewinds a tape to find initial position of a sentence when a repeat key signal is received and reproduces a sentence from the initial. The apparatus includes a key unit (2) having a repeat key, a motor controller (3) for driving a motor forward or backward according to control signal of a system controller (1), a volumn adjuster (7) for controlling the volumn of sound signal transmitted from an amplifier (6), a low pass filter (11) for detecting signal level of low frequency signal, and a comparator (12) for detecting no sound interval of a tape by comparing the low frequency signal level to reference level.

Description

Learning tape section repeat playback control device by single key

1 is a circuit diagram showing a tape player according to the present invention.

2 is a flowchart showing the operation of the system controller by the iterative reproducing controller of the present invention.

3 is a circuit diagram showing a conventional tape player.

* Explanation of symbols for main parts in the drawings

1: System Controller 2: Key Selection

3: motor control unit 4: motor

5: head 6: amplifier

7: Volume and sound quality control unit 9: Speaker / Headphone

11: low pass filter 12: comparator

13: reference voltage setting unit

The present invention relates to a learning tape player for reproducing a learning tape section by using a single key for reproducing a certain section of a cassette tape as a user presses one key. By operating the cassette tape in the reverse direction, the silent section where no signal is recorded is detected, and when the silent section is detected, the single-key learning tape section repeats and reproduces a sentence by reproducing the sentence. A repeat playback control device.

The conventional learning tape player has a system controller 20 which controls each function circuit as shown in FIG. 3, and playback, stop, rewind, and fast-sensing key functions are set to select deck driving and audio processing. A key selector 21, a motor controller 22 for controlling the rotational speed and the rotational direction of the motor 23 by a key operation, a head 24 for reproducing a signal recorded on a cassette tape, and a head An amplifier 25 for amplifying the output signal of 24, a volume and sound quality adjusting unit 26 for adjusting volume and sound quality conditions, and a voice amplifier 27 for amplifying a voice signal for output to the speaker / headphone 28; ) Is interconnected, and its operation relationship is as follows.

That is, when the control signal is output from the system controller 20 to the motor controller 22 according to the input of the plurality of function keys set in the key selector 21, the motor controller 22 rotates the speed of the motor 23. And determine a direction to drive the motor 23, and by driving the motor 23, a mechanism is mechanically operated to rotate or stop the tape reel table and the capstan motor which drive the tape, and recorded on the tape. The mechanical position of the head 24 and the pinch roller which reproduce predetermined audio signals are controlled.

In addition, the head 24 receives the magnetized signal from the tape to detect and amplify the voice signal in the amplifier 25 to control the volume and sound quality by the system controller 20 to output to the speaker / headphone 28 It was to.

However, such a conventional tape player is required by the user's sense after rotating the tape reel table in the opposite direction to the play direction by pressing the stop key and pressing the rewind key again when replaying a predetermined tape section again. When you think that you have rewinded as many times as you want to rewind, you have to repeatedly press the stop key and press the play key, and the process is cumbersome, and you have to spend a lot of time searching for the exact location you need. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and includes a section repeat play key in a one-touch manner using a single key, and when the section repeat play key is pressed, the cassette tape is driven in the reverse direction and used as a play signal of the head. User's operation when it is necessary to repeatedly listen to a certain sentence such as foreign language conversation by detecting silent section where no signal is recorded on the cassette tape, and controlling playback operation automatically when silent section is detected. It is an object of the present invention to provide an iterative reproducing control device which can contribute to the improvement of learning efficiency by simplifying the above, and will be described in detail with reference to the accompanying drawings of FIGS. 1 and 2.

1 is a circuit diagram showing a tape reproducing key by the repetitive reproducing controller of the present invention. As shown therein, a system controller 1 for controlling reproduction of a recorded signal while driving a cassette tape, The key selector 2, which is set, the motor controller 3 which drives the cassette to drive the tape while driving the motor 4 in the forward and reverse directions according to the output signal of the system controller 1, and the recording on the cassette tape. A head 5 for reproducing an audio signal, an amplifier 6 for amplifying a reproduction signal of the head 5, and a volume / sound quality of an output signal of the amplifier 6 to adjust the speaker / headphone 9 And a low pass filter (1) for detecting the level by low pass filtering the output signal of the amplifier (6) and the volume and sound quality adjusting unit (7) for muting the voice signal under the control of the system controller (1). 1) and a comparator 12 which detects a silent section and inputs it to the system controller 1 by comparing the output signal level of the low pass filter 11 with the set voltage of the reference voltage setting unit 13. .

In FIG. 1, reference numeral 8 denotes a voice amplifier which amplifies the output signal of the volume and sound quality adjusting unit 7 and outputs it to the speaker / headphone 9, and 10 denotes a low range by buffering the output signal of the amplifier 6. It is a buffer which inputs to the pass filter 11 and prevents the voice signal filtered by the low pass filter 11 from affecting the voice signal input to the volume and the sound quality fixing unit 7.

In the repeated playback control apparatus of the present invention configured as described above, when a user presses a function key such as a play key, a rewind key, and a fast forward key of the key selector 2, the system controller 1 receives the signal of the input function key as in the prior art. By controlling the operation mode of the tape regeneration key and outputting a control signal to the motor control unit 3, the motor control unit 3 drives the motor 4 in the operation mode. 4, the head 5 detects a predetermined sound signal on the cassette tape which is driven in accordance with the driving of the drive, and the detected sound signal is amplified by the amplifier 6, and the volume and sound quality are adjusted by the volume and sound quality adjusting unit 7. And amplified by the voice amplifier 8 and then output to the speaker / headphone 9.

On the other hand, when the user presses the section repeat play key while playing and outputting a predetermined audio signal recorded on the cassette tape in the playback mode, the system controller 1 first runs in the direction of the cassette tape as shown in FIG. In order to prevent the noise signal generated according to the output of the mute signal to the volume and sound quality control unit (7) to mute the audio signal is not output. In addition, the control signal is also output to the motor control unit 3 to switch to the reverse traveling mode in which the regeneration operation is reversed, thereby starting the motor 4 in reverse rotation and running the cassette tape in the reverse direction. At this time, the head 5 drives the cassette tape in the reverse direction by rotating only the tape reel table in the same state as the playback operation in close contact with the tape. The reverse traveling speed of the cassette tape becomes the same as the running speed at the time of reproduction. This is for detecting a silent portion in which no audio signal is recorded on the cassette tape.

When the reverse movement of the cassette tape starts, the output audio signal of the head 5 for reproducing the cassette tape is amplified by the amplifier 6, passed through the buffer 10, and then filtered by the low pass filter 11 to direct current. Converted to level.

In this way, the DC level of the audio signal output from the low pass filter 11 is input from the comparator 13 and compared with the reference voltage preset in the reference voltage setting unit 13. The output level of the low pass filter 11 is equal to or higher than the reference voltage in the interval, and is equal to or lower than the reference voltage in the silent region in which the audio signal is not recorded. The comparator 12 is " high " A detection signal of "low" level is output, and the output detection signal is input to the system controller 1.

Then, the system controller 1 determines whether or not a voice signal is recorded on the cassette tape according to the output signal of the comparator 12, and continues to run the cassette tape in the reverse direction when the voice signal is recorded. In a section, for example, between a sentence and a sentence or a section in which a conversation is finished, the motor 4 in the reverse driving mode is stopped through the motor controller 3, and at the same time, the volume and sound quality adjusting section 7 The control signal is also sent to cancel the mute operation, and the regeneration mode signal is sent to the motor control unit 3 to rotate the motor 4 forward and at the same time, the regeneration operation is performed. As described above, according to the present invention, when it is necessary to repeatedly play a sentence such as a foreign language conversation, the vehicle is driven backward to the initial position of one sentence to be repeated and reproduced by a single key one-touch method. Since the reproducing operation is performed, repetitive reproduction of one sentence is very simple, and the learning efficiency is improved.

Claims (1)

The system controller 1 controls the reproduction of the recorded signal while driving the cassette tape, the key selector 2 in which the interval repeat playback key is set, and the motor 4 in accordance with the output signal of the system controller 1. ), The motor control unit 3 for driving the cassette to the tape while driving in the forward and reverse directions, the head 5 for reproducing the audio signal recorded on the cassette tape, and an amplifier for amplifying the reproduction signal of the head 5. 6) and a volume and sound quality adjusting unit for adjusting the volume and sound quality of the output signal of the amplifier 6 to output the speaker / headphone 9 and to mute the audio signal under the control of the system controller 1 ( 7) a low pass filter 11 for low-pass filtering the output signal of the amplifier 6 to detect a level, and an output signal level of the low pass filter 11 for setting the set voltage of the reference voltage setting unit 13. Check the silent section in comparison with And a comparator 12 for inputting to the system controller 1, wherein the system controller 1 mutes the audio signal when the interval repeat playback key is pressed so that it is not output and drives the cassette tape in the reverse direction. And determining the silent section using the output signal of the comparator 12, canceling muting in the silent section, and reproducing the cassette tape.