KR19990027776A - Auto reversing method of cassette tape recorder - Google Patents

Abstract

The auto reversing method of the cassette tape recorder performs the auto reversing operation at the same time that the reproduction of the audio data recorded in the audio recording area is completed when the cassette tape recorder performs the auto reverse operation. Detecting the current position of the tape to be played if the auto reverse mode key is selected during tape playback; Outputting a low signal if the current position of the tape is a no-signal portion as a result of the detection, and a high signal if the signal portion (audio recording area) is present; If the low signal is continuously output and then transitions to a high signal, determining that the audio recording area of the tape starts to be reproduced by the non-signal unit at the initial position of the tape to continuously perform the ongoing playback operation; In the outputting step, if the high signal is continuously outputted and then transitioned to the low signal and outputted, it is determined that the audio recording area of the tape is reproduced, and thus the auto reversing operation of the tape is performed.

Description

Auto reversing method of cassette tape recorder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette tape recorder, and more particularly, to an automatic reversing method of a cassette tape which detects a current position of a tape to be played back and automatically reverses the tape according to a detection result.

In general, a cassette tape is divided into two first and second audio recording areas, and two first and second audio heads are mounted to read audio data recorded in the two audio recording areas. Audio data is recorded so that the recording directions of the audio data recorded in the two audio recording areas are opposite to each other. Therefore, the auto reversing operation of the cassette tape recorder can be performed. This auto reversing function is mostly added to a mini-cassette or an audio player equipped with a tape cassette recorder.

First, there are three auto reversing keys of a tape in a cassette tape recorder, one of which regenerates the first key for auto reversing during tape playback, and audio data recorded in one audio recording area, and then another audio data. It is usually composed of a second key for reproducing the audio data of the recording area only once and a third key for reversing the tape by successively repeating the above operation.

Referring to the auto reversing operation of the tape using such a key, first of all, a method of auto reversing the tape using the first key is performed during playback of the tape, that is, the first audio data using the first audio head. If the first key is pressed while playing the audio data recorded in the recording area, the operation of the first audio head is stopped and the second audio head is driven to play the audio data recorded in the second audio data recording area. Auto reversing operation is performed.

Subsequently, in the operation of autoreversing the tape using the second key, during the playback of the tape, that is, during the playback of the audio data recorded in the first audio data recording area using the first audio head. When the second key is pressed, all audio data of the first audio recording area currently being played is reproduced, and when the reproduction is completed, the operation of the first audio head is stopped and the second audio head is driven to the second audio recording area. The reversing operation is completed by reproducing all recorded audio data. At this time, stopping the first audio head and driving the second audio head causes tension in the ring when the tape is wound around one of the relays, and the auto reverse mode switch is turned on by using the tension. The sing operation is performed.

The method of performing the auto reversing operation using the third key is the same as the method of performing the auto reversing operation using the second key, but the number of times of reversing is continuously performed. That is, performing the auto reversing operation of the tape by using the second and third keys operates the auto reverse mode switch by the tension generated on the reel when the tape is completely wound on one reel. Will be performed.

The auto reversing method of the cassette tape according to the prior art operates the auto reverse mode switch by the tension generated in the reel as described above, so that the end portion of the tape where no audio data is recorded, i.e., the audio signal is not recorded. Since only the tape is wound around the reel until the signal is not signaled, there is a problem that the time until the auto reversing operation is performed after all the audio data is played back is considerably longer.

Accordingly, an object of the present invention is to solve the above-described problems of the prior art, and an object of the present invention is to simultaneously complete playback of audio data recorded in an audio recording area when performing an automatic reverse operation of a cassette tape recorder. In other words, the present invention provides an automatic reversing method of a cassette tape recorder capable of performing an auto reversing operation at the same time as the last track of a tape is played back.

1 is a block diagram of an apparatus for implementing an auto reversing method of a cassette tape recorder according to the present invention.

2 is a flowchart showing an operation of the auto reversing method of the cassette tape recorder according to the present invention.

Explanation of symbols for important parts of drawing

10: key input unit 11: control unit

12: signal detector 13: deck driving unit

A feature of the automatic reversing apparatus of a cassette tape recorder according to the present invention for achieving the above object is the automatic reversing apparatus of a cassette tape recorder having an autoreverse mode key, wherein the autoreverse mode key is selected during tape playback. A signal detection unit that detects whether the position of the tape currently being played is a non-signal unit or a signal unit and outputs a corresponding signal of high or low; When the signal output from the signal detection unit transitions to the low signal in the bass, it is determined that the audio data recorded in the audio recording area of the tape is completely reproduced, the control unit for providing a deck drive control signal to perform the auto reversing operation Wow; And a deck driving unit for performing an auto reversing operation of the tape according to the deck driving control signal provided from the controller.

In addition, the automatic reversing method of a cassette tape recorder according to the present invention is characterized in that the automatic reversing method of a cassette tape recorder provided with an autoreverse mode key includes: a tape which is reproduced when the autoreverse mode key is selected during tape playback. Detecting the current position of the step; Outputting a low signal if the current position of the tape is a no-signal portion as a result of the detection, and a high signal if the signal portion (audio recording area) is present; If the low signal is continuously output and then transitions to a high signal, determining that the audio recording area of the tape starts to be reproduced by the non-signal unit at the initial position of the tape to continuously perform the ongoing playback operation; In the outputting step, when the high signal is continuously outputted and then transitioned to the low signal and outputted, it is determined that the audio recording area of the tape has been reproduced, thereby performing the auto reversing operation of the tape.

Hereinafter, an embodiment of an auto reversing method of a cassette tape recorder according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram of an apparatus for implementing an auto reversing method of a cassette tape recorder according to the present invention. Referring to FIG. 1, the signal detector 12 and the key input unit 10 are described. And a control unit 11 and a deck driving unit 13.

The key input section 10 is composed of a playback key and an auto reverse mode key to input a playback key for playing back a cassette tape, and to input an auto reverse mode key for reversing a tape during tape playback. Here, the auto reverse mode key means three keys as described in the prior art.

When the playback key signal is input from the key input unit 10, the control unit 11 switches the operation mode of the cassette tape recorder to the playback mode, and drives the deck drive unit 13 according to the converted playback mode so that the cassette tape is played back. The control unit 13 controls the deck driving unit 13 according to the signal input from the signal detection unit 12, and provides a control signal to perform an operation of reproducing or auto reversing the tape.

When the auto-reverse mode key input signal is input from the key input unit 10, the signal detector 12 determines whether the current position of the tape to be played back according to the drive control signal of the controller 11 is a no-signal unit or a signal unit (audio data recording area). And outputs the corresponding signal Low or High signal to the controller 11 according to the determination result.

The deck driving unit 13 drives the deck according to the control signal provided from the control unit 11 to perform the tape regeneration and auto reversing operation.

Referring to the operation of the apparatus for implementing the automatic reversing method of the cassette tape recorder according to the present invention having such a configuration, first, after inserting the tape into the deck (not shown) of the cassette tape recorder, the key input unit 10 Selecting the play key causes the tape to start playing.

When the autoreverse mode key of the key key input unit 10 is selected while the tape is being played in this way, at this time, since the operation of the first key described in the prior art is the same as the present invention and the prior art, the description thereof is omitted. Only the operations of the 2 and 3 keys will be described. That is, when the second key or the third key is selected, the 5 second reverse mode signal is input to the controller 11.

The control unit 11 receives this signal and provides a drive control signal to the signal detection unit 12 so that the signal detection unit 12 detects the current position of the tape currently being reproduced. In other words, control is performed to detect whether the portion where the tape is currently being reproduced is the signal portion or no signal portion. Here, the no-signal portion means a transparent portion at the initial position and the end of the tape.

At this time, if the position of the tape currently being reproduced detected by the signal detection unit 12 is a no-signal portion, a low signal is output to the controller 11, and if a signal portion is a high signal.

The control unit 11 does not provide any signal to the deck driver 13 when the signal initially input from the signal detector 12 is low or the high signal is continuously input. In addition, if a high signal is applied after a predetermined time has elapsed since the initial input signal is low, it is determined that the initial portion of the tape is being reproduced, and the deck driving unit is controlled so that the tape is continuously reproduced.

Here, the initial signal applied from the signal detection unit 12 to the control unit 11 is low, which means that the initial position of the tape, that is, the portion where audio data is not recorded, is being reproduced. This means that the audio data is played back while the initial position of the tape, that is, the initial position where audio data is not recorded, is played and the position of the audio data is recorded.

As described above, when the high signal is applied from the signal detector 12 to the control unit 11 and maintains the high signal, when the low signal is applied from the signal detector 12 and transitions from high to low, the signal is recorded in the audio recording area of the tape. It is judged that all the audio data has been reproduced, so that the deck driving unit 13 is controlled so that the tape is auto-reversed. Here, the auto reversing operation by the deck driving unit 13 stops the driving of the first audio head and drives the second audio head as in the prior art so as to immediately reproduce the audio data recorded in the second audio recording area. Will be.

Summarizing the above operation, when the audio data recording area is played back from the initial position of the tape, the audio data is normally played back. When all audio data recorded in the audio data recording area is played back and no signal part is detected, that is, the last track of the tape The tape will be auto-reversed at the same time as playback is complete.

The automatic reversing method of the cassette tape recorder according to the present invention corresponding to the operation of the automatic reversing apparatus of the cassette tape recorder according to the present invention will be described with reference to FIG. 2.

Fig. 2 is an operational flowchart showing the auto reversing method of the cassette tape recorder according to the present invention.

First, it is determined whether the cassette tape recorder is in the playback mode (S101), and if it is determined that the cassette tape recorder is in the playback mode (S102).

If the autoreverse motkey is selected while the tape is being played back (S103), it is detected whether the current position of the played tape is a no-signal portion or a signal portion in which audio data is recorded (S104).

As a result of the detection, it is determined whether the detected current position of the tape is the non-signal part (S105). If the signal part is no signal part, a low signal is output (S106). If the signal part is a high signal, the tape is reproduced normally (S108, S109). ).

In step S106, the current position of the tape is continuously detected while the low signal is output, and it is determined whether the detected position of the tape is the no signal part (S107).

As a result of the determination, if the detected portion is the non-signal portion, the tape is continuously reproduced while outputting the low signal. If the detected portion is the signal portion, the tape transitions from the low signal to the high signal to output the high signal (S108). At this time, the tape is normally being played back.

When the low signal is input while the tape is being played normally while outputting the high signal as described above, it is determined as the non-signal portion at the end of the tape.

When the low signal is output in this manner, the deck is driven to auto reverberate the tape (S112).

As a result, the present invention outputs a low signal when a non-signal portion is detected and a high signal when a signal portion is detected. When the signal transitions from a low signal to a high signal, the tape is normally played back. It is reversed. That is, since the transition from the low signal to the high signal is a part of the transition from the initial position of the tape to the audio recording area, the tape is normally played back. The transition from the high signal to the low signal is complete playback of the audio recording area of the tape. It means. Therefore, the auto reversing operation is performed at the same time that the reproduction of the audio recording area is all completed (the last music is completely reproduced).

As described above, in the auto reversing method of the cassette tape recorder according to the present invention, when the auto reverse mode is selected, the tape is played back to the end (tape end no signal part) as in the prior art and is switched to the auto reverse mode for tension. In addition, the end of the audio recording area is reproduced, the signal-free portion is detected, and the auto reversing operation is performed, thereby reducing the time until the auto reversing operation is performed.

Claims (1)

In the auto reversing method of a cassette tape recorder having an auto reverse mode key, Detecting the current position of the tape to be played when the auto reverse mode key is selected during tape playback; Outputting a low signal if the current position of the tape is a no-signal portion as a result of the detection, and a high signal if the signal portion (audio recording area) is present; If the low signal is continuously output and then transitions to a high signal, determining that the audio recording area of the tape starts to be reproduced by the non-signal unit at the initial position of the tape to continuously perform the ongoing playback operation; In the outputting step, when the high signal is continuously output and the output is changed to the low signal, the audio recording area of the tape is judged to be reproduced and the auto reversing operation of the tape is performed. Auto reversing method.