KR19980022905A - Regeneration control method of cassette tape and apparatus for performing same - Google Patents

Abstract

A reproduction control method of a cassette tape which detects that the reproduction of the recorded audio signal is completed at the time of reproducing the cassette tape and controls the reproduction operation of the other side of the cassette tape to be performed within the shortest time when the reproduction of the recorded audio signal is completed. An apparatus for performing is disclosed. According to the present invention, when the user inputs the playback function of the cassette tape inserted into the audio device in the first step, the driving motor is operated to determine whether the playback operation is performed. In the second step, it is determined whether the audio signal is output from the speaker during the playback mode of the cassette tape of the audio device. In the third step, the time is counted when it is determined that no audio signal is detected during the playback mode of the cassette tape of the audio device. Determine if the set time has elapsed. In the fourth step, if the audio signal is not detected for a certain time during the reproducing mode, the cassette tape is regenerated within the shortest time. In the present invention, when the reproduction of the audio signal recorded at the time of reproducing the cassette tape is completed, the reproducing operation of the other side of the cassette tape is performed in the shortest time, thereby increasing the usability of the audio device.

Description

Regeneration control method of cassette tape and apparatus for performing same

The present invention relates to a playback control method for a cassette tape and an apparatus for performing the same. In particular, when the playback of the recorded audio signal is completed by detecting that the playback of the recorded audio signal is completed, the cassette is recorded within the shortest time. The present invention relates to a playback control method of a cassette tape for controlling a playback operation on the other side of a tape, and an apparatus for performing the same.

In general, cassette tapes used in audio equipment have recorded audio signals. In the method of recording the audio signal on the cassette tape, the magnetic tape is moved to the lower end of the recording head in which the coil is wound on a metal piece, and current is applied to the coil. The current applied to the recording head generates magnetism, and the magnetism records the residual magnetism on the cassette tape. Changing the direction of the current applied to the coil changes the direction of the magnetic field generated in the recording head, and thus records the audio signal on the principle of changing the direction of the residual magnetic recorded on the cassette tape. When a user inserts a cassette tape on which an audio signal is recorded into an audio device and inputs a playback operation, the playback head of the audio device reproduces it. In the method of reproducing the audio signal recorded on the cassette tape, when the playhead in which the coil is wound around the metal piece approaches the magnetic tape on which the audio signal is recorded, an induced voltage proportional to the magnetism is generated in the coil due to the magnetism remaining on the cassette tape. Let's do it. The induced voltage is amplified and applied to the speaker so that the user can listen to the audio signal from the audio device.

In such a cassette tape, there is a so-called blank state, that is, a portion in which no audio signal is recorded at all, until a certain portion before the audio signal is recorded and from a time when the recorded voice signal is terminated. Therefore, when the user inputs a playback operation on the audio device, the user can play the audio tape for a certain time until the cassette tape is moved to the portion where the audio signal is recorded and for a certain time until the audio signal recorded on the cassette tape is terminated and moved to the other side. Waits only for the output of the voice signal or artificially performs a fast forward function. In addition, in audio equipment provided with the so-called AUTO REVERSE function which automatically reproduces the other side of the cassette tape, this function is performed through a switch operation.

Several methods have been devised to address this gap. Among them, a method of inserting a recognition signal separate from the voice signal is widely used to recognize a portion where the recorded voice signal starts and the recorded voice signal ends on the cassette tape. In this method, when the microcomputer detects a separate recognition signal during the playback of the tape, the fast forwarding function or the auto reverse function is performed to increase the convenience of use.

However, a signal for recognizing the beginning and the end of a voice signal on such a cassette tape has to be complicated at the time of recording by recording a separate signal at the time of recording the cassette tape. In addition, the design of the audio device is complicated by adding a function of recognizing a separate recognition signal to the audio device.

The present invention was devised to solve the above problems, and a first object of the present invention is to provide a cassette tape for controlling the reproduction operation of the other side of the cassette tape within the shortest time when the reproduction of the audio signal is completed on the cassette tape. It is to provide a playback control method of.

A second object of the present invention is to provide a reproducing control apparatus of a cassette tape suitable for performing the above first object.

1 is a flowchart showing a method for controlling playback of a cassette tape according to the present invention.

FIG. 2 is a block diagram showing an apparatus of an embodiment for performing the playback control method shown in FIG.

FIG. 3 is a block diagram showing an apparatus of another embodiment for performing the playback control method shown in FIG.

Explanation of symbols for main parts of the drawings

10: drive motor unit 20: microcomputer

30: amplification unit 40: speaker

50: voice signal detection unit

In order to carry out the above first object, according to the present invention,

A first step of operating the driving motor when the user inputs a playback function of the cassette tape inserted into the audio device, and determining whether a playback operation is performed;

A second step of determining whether or not a voice signal is output from a speaker during the playback mode of the cassette tape;

A third step of counting time and determining whether a set time has elapsed when it is determined that no audio signal is detected during the playback mode of the cassette tape; And

There is provided a playback control method of a cassette tape comprising a fourth step of performing a playback operation of a cassette tape in a shortest time when an audio signal is not detected for a predetermined time during the playback mode.

Preferably, in the second step, it is possible to determine whether the voice signal is output by an apparatus for converting the voice signal output from the speaker into an electrical signal, and whether or not the voice signal is output by receiving a control signal applied to the speaker. can do.

According to a preferred embodiment of the present invention, the fourth step may be performed in a fast-forward mode for moving the cassette tape at high speed, or in an autoreverse mode for regenerating the other side of the cassette tape.

According to the present invention for carrying out the second object,

A motor driving unit providing power for moving the cassette tape;

It is connected to transmit and receive a signal with the motor driver, and if the audio signal is not detected for a certain time during the control operation of the audio signal outputting the audio signal and the cassette tape, the playback operation of the cassette tape is performed within the shortest time. Microcomputer to control to be made;

An amplifier connected to an output terminal of the microcomputer to amplify the audio signal to a predetermined level;

A speaker connected to an output terminal of the amplifier and outputting a voice signal to the outside; And

Provided is a cassette tape reproducing control device which is mounted spaced apart from the speaker at a predetermined interval and is connected to an input side of the microcomputer and comprises a voice signal detection unit for detecting whether a voice signal is output from the speaker.

In addition, the second purpose described above,

A motor driving unit providing power for moving the cassette tape;

It is connected to transmit and receive a signal with the motor driver, and outputs a control signal for outputting a voice signal from an audio device, and receives the output control signal and outputs a voice signal for a predetermined time or more in the reproducing operation mode of the cassette tape. Otherwise, the microcomputer for controlling the reproduction operation of the cassette tape in the shortest time;

An amplifier connected to an output terminal of the microcomputer to amplify the audio signal to a predetermined level; And

It may be achieved by a cassette tape playback control device comprising a speaker connected to the output end of the amplifier section and outputting a voice signal to the outside.

Therefore, when the voice signal is not detected by the voice signal detector for more than a predetermined time, the microcomputer outputs a control signal to the motor driver to quickly rotate the motor forward, or outputs a control signal to the motor driver to reverse the motor.

As the voice signal detection unit, a condenser microphone which outputs a current proportional to the sound waves of the output audio signal can be used.

In the present invention, when the reproduction of the audio signal recorded at the time of reproducing the cassette tape is completed, the reproducing operation of the other side of the cassette tape is performed in the shortest time, thereby increasing the usability of the audio device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 2 is a block diagram showing an embodiment of a playback control apparatus according to the present invention, and FIG. 3 is a block diagram showing another embodiment of a playback control apparatus according to the present invention.

As shown in FIG. 2, the motor control unit 10 is mounted on an audio device for reproducing an audio signal recorded on a cassette tape, thereby providing a rotational force for moving the cassette tape. The motor driving unit 10 is connected to the microcomputer 20 for controlling the reproduction operation of the cassette tape and the general operation for the output of the audio signal, so as to transmit and receive mutual signals. An amplification unit 30 for amplifying the audio signal output from the microcomputer 20 to a predetermined level is connected to the output terminal of the microcomputer 20. The output terminal of the amplifier 30 is connected to the speaker 40 for outputting the audio signal to the outside. In one embodiment of the playback control device of the present invention is configured by mounting the voice signal detection unit 50 for detecting whether the audio signal output from the speaker 40 in the vicinity of the speaker 40. The output terminal of the audio signal detection unit 50 is connected to the microcomputer 20.

Here, the voice signal detector 50 may be configured as a microphone for outputting a current proportional to the sound waves of the voice signal output from the speaker 40, which is a kind of microphone using a change in capacitance. It may be composed of a condenser microphone (Condenser Microphone).

Another embodiment of the regeneration control device of the present invention excludes the configuration of the voice signal detection unit 40 as shown in FIG. 3, and returns the volume control signal output from the microcomputer 20 to the amplification unit 30. The microcomputer 20 returns to the microcomputer 20 to determine whether the audio signal is output.

Detailed operation of the present invention configured as described above will be described with reference to FIG.

1 is a flowchart showing a method for controlling playback of a cassette tape according to the present invention.

Referring to FIG. 1, when a user inputs a cassette tape to an audio device and listens to a voice signal recorded on the cassette tape, and inputs a playback function by operating a key not shown, the microcomputer 20 recognizes and drives the same. The motor 10 is operated (S1).

When the driving motor 10 is operated, the magnetic tape which is wound in the cassette tape and the voice signal is recorded is wound in one direction and moved at a constant speed. The moving magnetic tape is approached by a moving head wound around a metal piece during the regeneration operation. The coil of the playhead approaching the magnetic tape generates an induced voltage proportional to the magnetism remaining on the tape.

The microcomputer 20 applies the induced voltage generated from the coil, that is, the voice signal, from the amplifier 30 and amplifies it to the speaker 40 so that the audio signal is reproduced in the audio device (S2). After the step, the voice signal detector 50 formed of a microphone or the like spaced apart from the speaker 40 is detected and applied to the microcomputer 20 by detecting the voice signal output through the speaker 40. That is, the voice signal detector 50 receives the voice signal output through the speaker 40 and applies the electrical signal accordingly to the microcomputer 20. The microcomputer 20 receives the electrical signal input from the voice signal detector 50 to determine whether the voice signal is reproduced.

Further, according to the configuration of another embodiment of the present invention excluding the input of the voice signal detector 50, the microcomputer 20 applies the induced voltage generated from the coil, that is, the voice signal from the amplifier 30 to amplify it. At the same time, it is fed back to one side to determine whether the audio signal is reproduced in the audio device (S3). That is, in the configuration of the embodiment of the present invention, when the audio signal is output from the audio device through the speaker 40, the voice signal detection device 50 made of a microphone or the like is output from the speaker 40 to the microcomputer 20. An electrical signal is applied according to the voice signal. However, if the playhead is in contact with the empty portion of the cassette tape during the playback operation in the audio device, the audio signal is not output through the speaker 40, and the electrical signal is applied to the microcomputer 20 by the voice signal detection device 50. It doesn't work. In addition, in the configuration of another embodiment of the present invention, when the audio signal is output from the audio device through the speaker 40, the microcomputer 20 applies the audio signal according to the induced voltage input from the playhead to the amplifier 30, When the playhead is in contact with the blank portion of the cassette tape during the playback operation in the audio device, the microcomputer 20 applies an electric signal having a predetermined value to the amplification unit so that the microcomputer 20 determines whether or not the audio signal is reproduced. can do.

After the above step, if it is determined that the audio signal is not detected during the playback mode in the audio device, the microcomputer 20 counts the time (S4) and determines whether a predetermined time has elapsed (S5). In step S5, if it is determined that the audio signal is not detected for a predetermined time during the playback mode in the audio device, as shown in FIG. 1, the microcomputer 20 enters the fast-winding mode for moving the cassette tape to the motor drive unit 10 at high speed. The control signal is outputted so that the cassette tape passes through the cassette tape quickly. In addition, in the audio device having the autoreverse function, when the microcomputer 20 determines that the audio signal is not detected for a predetermined time during the play mode in the audio device, the microcomputer 20 replaces the other surface of the cassette tape with the motor driving unit 10 in step S5. A control signal for executing the autoreverse mode for reproducing is output to reproduce the other side of the cassette tape (S6).

In the present invention, if it is determined that the audio signal is not detected for a predetermined time while the audio device is in the playback mode, the present invention automatically performs the fast forward mode or the auto reverse mode. Therefore, the cassette tape can be reproduced in the shortest time, thereby improving the usability of the audio device.

One embodiment of the present invention has been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and improvements or modifications thereof can be made within the ordinary knowledge of those skilled in the art.

Claims (11)

A first step of operating the driving motor when the user inputs a playback function of the cassette tape inserted into the audio device, and determining whether a playback operation is performed; A second step of determining whether or not a voice signal is output from a speaker during the playback mode of the cassette tape; If it is determined that no audio signal is detected during the playback mode of the cassette tape of the audio device, counting the time and determining whether the set time has elapsed; And And a fourth step of reproducing the cassette tape within the shortest time when the audio signal is not detected for a predetermined time during the reproducing mode. The method of claim 1, wherein the second step is performed by receiving a control signal applied to a speaker and determining whether to output an audio signal. The method of claim 1, wherein in the fourth step, a fast forward mode for moving the cassette tape at a high speed is performed. The method of claim 1, wherein in the fourth step, an autoreverse mode is performed in which the cassette tape is regenerated. A motor driving unit 10 providing power for moving the cassette tape; It is connected to the motor drive unit 10 to transmit and receive a signal, and if the audio signal is not detected for a predetermined time during the control operation of outputting the audio signal from the audio device and the cassette tape reproducing mode, the cassette tape is shortened within the shortest time. A microcomputer 20 for controlling a reproducing operation; An amplifier 30 connected to an output terminal of the microcomputer 20 to amplify an audio signal to a predetermined level; A speaker 40 connected to an output terminal of the amplifier 30 to output a voice signal to the outside; And, A cassette tape reproducing control device, which is mounted at a predetermined interval from the speaker 40 and is connected to an input side of the microcomputer 20 and comprises a voice signal detection unit 50 for detecting whether a voice signal is output from the speaker 40. . The method of claim 5, wherein the microcomputer 20 outputs a control signal to the motor driver 10 when the voice signal is not detected by the voice signal detector 50 for a predetermined time, thereby quickly rotating the motor forward. Regeneration control device for cassette tape. The cassette according to claim 5, wherein the microcomputer 20 rotates the motor by outputting a control signal to the motor driver 10 when the voice signal is not detected by the voice signal detector 50 for a predetermined time. Tape playback control device. The apparatus of claim 5, wherein the voice signal detection unit (50) comprises a microphone for outputting a current proportional to sound waves of the output voice signal. A motor driving unit 10 providing power for moving the cassette tape; It is connected to transmit and receive a signal with the motor driving unit 10, and transmits a control signal for outputting a voice signal from an audio device, and receives the transmitted control signal and receives a voice signal for a predetermined time or more in the reproducing operation mode of the cassette tape. If the output is not output to the microcomputer 20 to control the playback operation of the cassette tape in the shortest time; An amplifier 30 connected to an output terminal of the microcomputer 20 to amplify an audio signal to a predetermined level; And, And a speaker (40) connected to an output terminal of the amplifying unit (30) to output an audio signal to the outside. The apparatus of claim 9, wherein the microcomputer (20) outputs a control signal to the motor driving unit (10) if the voice signal is not fed back for a predetermined time, thereby rapidly rotating the motor. The apparatus of claim 9, wherein the microcomputer (20) outputs a control signal to the motor driving unit (10) when the voice signal is not fed back for a predetermined time, thereby rotating the motor in reverse direction.