KR900001424Y1 - Automatic edit controlling circuit of automatic music piece-selecting device for the non-recoding parts - Google Patents

Abstract

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Description

Automatic editing control circuit for no recording part of automatic selection device

1 is a conventional circuit diagram.

2 is a block diagram according to the present invention.

3 is a detailed circuit diagram of FIG. 2 according to the present invention.

* Explanation of symbols for main parts of the drawings

10: recording and muting circuit 20: selection and display

30: logic control unit 40: motor control unit

R ₁ -R ₁₁ : Resistor C1: Capacitor

TR ₁ -TR ₂ : Transistor AG ₁ -AG ₉ : Endgate

NG ₁ -NG ₆ : NANDGATE OG ₁ -OG ₂ : OAGATE

CT ₁ -CT ₆ : Counter L ₁ -L ₃ : Light Emitting Diode

SW ₁ : 1 song selection switch SW ₂ : Automatic continuous switch

FF ₁ -FF ₂ : Flip-flop VR ₁ : Variable resistor

OP ₁ : Comparator

The present invention relates to an automatic editing control circuit for a non-recording part of a cassette tape automatic selection device. In particular, two switching switches are turned on together in order to prevent muting during recording. Even if a song is selected first, the selection switch is turned on during the recording and the memory is remembered. When the song is finished, the automatic selection control circuit of the non-recording part of the automatic selection device is formed.

The automatic selection device of the audio equipment uses the non-recorded portion between the songs recorded on the cassette tape and conventionally, when the user wants to form the non-recorded portion on the cassette tape, as shown in FIG. When SW _A is turned ON, the transistor Q _1A is conducted by the time constants of the resistor R _A and the capacitor C _A so that a constant recording portion is formed.

However, the conventional method, the switch (SW _A) a from which performs the recording, since only the muting (Muting) carried by one and also when the user of the wrong switch (SW _A) prior to the recording from unwanted places There was a problem that the muting was performed to erase the song, and in order to form the unrecorded part without erasing the song, it was necessary to wait for the end of the song and press the switch (SW _A ) at the same time as the end of the song to mute the songs repeatedly. In this case, there was a defect in the time that the song ends and the time when the switch SW _A is turned on, so that it is not possible to form a substantially no recording part.

Accordingly, an object of the present invention is to provide an apparatus in which a recording portion is formed only when a song is finished even when a switch is pressed before or during recording.

Another object of the present invention is to provide a circuit that can reduce the time to wait for recording the next song after recording one song by one song selection switch and can be recorded continuously.

Another object of the present invention is to provide a circuit that can be performed when there is no need to form a non-recording portion on the tape, and even if the two selection switches are turned on, one song selection function is performed first to prevent continuous recording.

Therefore, in order to carry out the purpose of the present invention, the audio signal is received and recorded on tape, muting is made, and the inputted audio signal is compared with a reference signal to form a logic circuit according to the presence or absence of the waveform by shaping the output and It accepts the mute circuit, operation signal of one song selection and continuous selection switch, makes a selection according to the function according to this operation signal, displays the mode operation status, and even if two switches are pressed simultaneously, the one song selection switch first A selection and display unit to be selected, and if there is no voice signal for a predetermined time according to the output of the recording and muting circuit and the selection and display unit, muting is performed in the recording and muting circuit, and then a control unit is formed such that a portion of the recording unit is formed for a predetermined time It generates a signal and forms a no recording part only when the song is finished even if there is an input switch input signal during recording. And a logic control unit for displaying a state according to the function operation, and a motor control unit controlled according to a function when the driving motor does not form one piece, continuous and no recording part by selection of the selection and display unit and output of the logic control unit. Characterized in that consisting of.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram according to the present invention to receive a voice signal to be recorded on the tape, muting is made and the waveform is shaped by comparing the amplified signal of the input voice with the reference signal to generate a logic signal depending on the presence or absence of the voice signal And the operation signal of the mute circuit 10 and one song selection and continuous selection switch. The selection according to the function is controlled according to this operation. When two switches are pressed simultaneously, one song is selected first to solve the problem of misoperation. If there is no input signal for a predetermined time at the output of the selection and display section 20 and the recording and muting circuit 10 and the selection and display section 20 to solve and display a function operation state, muting is performed in the recording and muting circuit 10. The control signal is generated to display a certain recording length of a certain length by the set time, and the state according to the function operation is displayed. In the case of not forming the sound portion, the logic controller 30 for controlling this, the selection and display unit 20, and the output of the logic control unit 30, recording and recording of the non-recording unit formation and other songs are quickly recorded. The motor control unit 40 for controlling the driving of the motor with a reset function when trying to.

Therefore, the present invention is briefly described based on the above-described configuration. When the user presses the REC button in the audio device (tape recorder), the recording signal is applied to the recording head in the recording and muting circuit 10 so that the audio signal After recording the tape on the tape and comparing the recorded signal in the comparator, the waveform is shaped and a signal for the presence or absence of a predetermined voice signal is inputted to the logic controller 30 so that a control signal is generated and the muting driver of the recording and muting circuit 10 is generated. Controlling to prevent muting during recording and controlling the one song selection switch in the selection and display section 20 displays the selection and does not mute when recording by the logic controller 30, but the audio signal in the recording and muting circuit 10 If is not input for a predetermined period of time, the logic control unit 30 applies a control signal to the recording and muting circuit 10 so that muting is achieved, and after a predetermined period after the muting starts The completion of the recording unit, that is, the completion of the muting is notified through the display device, and a signal is applied to the motor controller 40 to stop the motor.

After the end of one song to form a non-recording portion to record the next song and if you need a lot of time can be driven again by the reset switch of the motor control unit 40.

In addition, when the user selects the continuous recording function in the selection and display unit 20, since the output signal of the logic controller 30 applied to the motor controller 40 does not cut off the power of the motor driving unit, between the songs and the songs at the same time as the continuous recording. Automatically forms a portion of no recording on the

In addition, when two functions (one song and a continuous switch) are simultaneously selected by the selection and display unit 20, one song selection function is preferentially selected by flip-flop operation of RS, and the above-mentioned one song selection is selected by the logic controller 30. When the two functions are not selected in the selection and display unit 20, the logic control unit 30 does not control the recording and muting unit of the muting circuit 10, and thus recording continues without recording. Even if the selection switch is pressed by the selection and display unit 20, the logic controller 30 detects that there is no voice signal for a predetermined time only when the song is finished, and automatically applies a mute signal to the recording and muting circuit 10 at this time. Form a no recording part of length.

FIG. 3 is a detailed circuit diagram of FIG. 2 according to the present invention. In the recording amplifier AM ₁ , the recording audio signal passing through the capacitor C ₁ passes through the resistors R ₁₀ and R ₁₁ and is recorded by the recording bias RB. Recording is made on the tape through (RH), and the output of the capacitor C ₁ is input to the comparator OP ₁ and compared with the reference voltage set by the resistor R ₈ and the variable resistor VR ₁ , and this output is Schmitt. Waveform shaping is output from the STI (Schmiclt Trigger Inverter), and the part configured to connect the collector of the transistor (TR ₁ ) from the resistor (R ₁₀ ) and the resistor (R ₉ ) to the base to input the mute signal is recorded. and muting corresponding to the circuit 10, and one selector switch (SW ₁₎ to a bias resistor (R ₁₎ a NAND gate (NG ₃₎ connected between the ground and in the one selected switch (SW _1), the output signal of NAND gate (NG _4, NG ₆₎ is input to the aND gate (AG ₂₎ through said NAND Site at the front end is input to the output signal and the AND gate (AG ₁₎ of the input signal and the NAND gate (NG ₄₎ via a resistor (R ₄₎ is input to a light emitting diode (LED) element (L ₁₎ a row select switch (SW The input signal of ₂ ) is input to the NAND gate NG ₅ and is also input to the AND gate AG ₂ to be input to the light emitting diode element L ₂ through the resistor R ₅ . And the output of the recording and muting circuit 10 and the output of the selection and display unit 20 are input to the AND gates AG ₃ and AG ₄ so that each output signal is applied to the oragate OG ₂ . Iowa gate (OG ₂₎ output is connected to the clear terminal of the counter (CT ₁₎ through an inverting gate (INV ₁₎ is output to the clock (CK) is a NAND gate of the Iowa gate (OG ₂₎ (NG ₁₎ and the end It is connected to the clock terminal of the counter CT ₁ through the gate AG ₅ and outputs, selects, and outputs the recording and muting circuit 10. The output of the see-through section 20 is input to the oragate OG ₁ , and this output is input to the AND gate AG ₉ , and the flip-flop (FF ₁ ) is driven by the output of the counter CT ₁ to output the output. The signal and the clock CK signal are inputted to the clock CK of the counter CT ₂ through the AND gate AG ₆ so that the output of the counter CT ₂ passes through the NAND gate NG ₂ and flip-flops FF _1. ) output of the aND gate (and input to the AG _8), the aND gate (AG ₈₎ output Iowa gate (OG ₁₎ the logical control unit corresponding to the logical controller 30 portion configured to be driven according to the output, and in the The output of the 30 and the signal of the selection and display control unit 20 are inputted to the AND gate AG ₇ , and this output drives the flip-flop FF ₂ to drive the transistor TR ₂ through the resistor R ₇ . Control so that power by the constant voltage unit SP is supplied to the motor M, and the flip-flop FF ₃ can be cleared by the reset switch SW ₃ . The portion configured to correspond to the motor control unit 40.

Therefore, the present invention will be described in detail with reference to the above-described embodiments of the present invention. When the user presses a record button REC among the function buttons of the cassette tape recorder and a signal is input through the voice input device, the recording amplifier AM ₁ . Is amplified by the capacitor (C ₁ ) and resistor (R ₁₀ , R ₁₁ ) and applied to the recording head (RH) to record the audio signal on the cassette tape, and this signal is the non-inverting terminal of the comparator (OP ₁ ) ( If the output is compared with the reference value set by the resistor (R ₅ ) and the variable resistor (VR ₁ ) input to +), the Schmitt-trigger inverter (STI) forms the output waveform of the comparator (OP ₁ ), and then the AND gate (AG ₃ ). Are input to the and gate AG ₄ , respectively.

At this time, the muting transistor TR ₁ is turned on and off in accordance with the selection of the one song selection switch SW ₁ and the continuous selection switch SW ₂ to form a recording and a non-recording portion on the cassette tape.

Here, when the user records, the audio signal is recorded and the Schmitt trigger (STI) output is at the "low" level so that the AND gate (AG ₃ , AG ₄ ) is applied regardless of the position of the selector switch (SW ₁ , SW ₂ ). When it becomes "low" and inputs to the oA gate OG ₂ , it also becomes "low" and then inverts at the inversion gate INV ₁ to become "high".

The output (Q) of the signal, the counter is inputted to the clear terminal of a (CT ₁₎ a counter (CT ₁₎ a and clear the counter (CT ₁₎ is so applied to the preset terminal of the flip-flop (FF ₁₎ flip-flops ( The output Q of FF ₁ ) becomes " low " and is input to the AND gate AG ₉ so that " low "

Subsequently, since the "low" is also output from the AND gate AG ₉ , the transistor TR ₁ is not turned on and muting is not performed.

If the selection switch (SW _1, SW ₂₎ The output of the NAND gate (NG ₃₎ when it is of one selected switch (SW ₁₎ one is a "low" because each input to the NAND gate (NG _4, NG ₅₎ "High" is output and input to the AND gate AG ₁ and the NAND gate NG _6. At this time, the light emitting diode L ₁ is turned on by the "high" of the AND gate AG ₁ to indicate that it is one song selection. Even when the "high" signal is input to the oragate OG ₁ and the "high" is output, the audio signal is input in the recording state, so the AND gate AG ₃ does not change and muting is not performed in the transistor TR ₁ . .

If when there is no speech signal the AND gate (AG _3, AG ₄₎ is therefore the "high" is through the inverting gate (INV ₁₎ at the output "Hi" of Iowa gate (OG ₂₎ "low" the counter (CT ₁ ) it is when the more than 3 seconds, the set signal is still the counter (output (Q) of the CT ₁₎ is applied to the preset terminal of the flip-flop (FF _1), because the preset flip-flop (FF _1), the output (Q) is "High" is output.

The "high" signal is a signal, so the output of the AND gate (AG ₈₎ the AND gate (AG ₈₎ to pass the "High" through is applied to the transistor (TR ₁₎ muting because conduction by turning on the transistor (TR ₁₎ In addition, since the "high" of the flip-flop FF ₁ is input to the AND gate AG ₆ , the clock CK is input to the clock of the counter CT ₂ and counted and set to a predetermined time of 6 seconds. The "low" is output from the NAND gate NG ₂ so that the light-emitting diode L ₃ is turned on to form the unrecorded portion of the signal and the end of muting is passed after 6 seconds.

This is because "low" is inputted to the AND gates AG ₈ and AG ₉ as "low" to turn off the transistor TR ₁ .

On the other hand, when the "low" of the NAND gate NG ₂ becomes the "high" after the inverting gate INV ₂ and is input to the AND gate AG ₇ , the operation signal of the one song selection switch SW ₁ is read and flipped. is because the flip-flop (FF ₂₎ of the output is "high" is the because conduction by turning on the transistor (TR ₂₎ the collector is a "low" output from the constant-voltage unit (SP) to the preset terminal of the flop (FF ₂₎ The passage is changed so that the voltage applied to the motor M is cut off.

Thus, one song select switch (SW ₁ ) is used to record the next song after the end of the song to form a non-recorded portion when a lot of time is required when a certain time is used to reset the switch (SW) ₃ ) by turning on the motor (M).

In addition, the counter CT ₁ set a time of 3 seconds to detect when the input voice signal was cut off for a while.

That is, when the three seconds placed by setting the speech signal reporting dropped reenter If muting is but do not performed even after a three-second time audio signal is received are considered to be the song it is over a certain length as long as the time set in the counter (CT ₂₎ It forms a no recording part.

When the user turns on the continuous switch SW ₂ , “high” is applied to the NAND gate NG ₅ and the AND gate AG ₂ , and the outputs of the NAND gate NG ₃ and the NAND gate NG ₆ are also applied. Becomes high, and the output of the AND gate AG ₂ becomes high.

In this case, the light emitting diode L ₂ is turned on to notify the operation according to the selection of the continuous function, and the light emitting diode L ₁ is turned off because the output of the AND gate AG ₁ is "low".

Here, the AND gate AN ₂ " high " signal is inputted to the AND gate AG ₄ and the OA gate ₁ and the AND gates AG ₃ and AG ₄ are set to " low " Since the output Q of the FF ₁ is "low", the transistor TR ₁ is not turned on and is not muted. When the recording state is performed for 3 seconds without a voice signal, the AND gate AG ₄ is "high", and thus the OG is OG. ₂ ) becomes "high" and the output Q of the flip-flop FF1 becomes "high". Therefore, the clock CK is received from the AND gate AG ₆ and input to the counter CT ₂ . Allows recording of no recording.

Therefore, it is possible to form a constant non-recorded portion between the song and the song simultaneously with continuous recording.

When three switches (SW ₁ , SW ₂ ) are pressed simultaneously due to a user's misoperation, the output of the AND gate (AG ₁ ) is continuous by the input of one song selection switch (SW ₁ ) and the output of the NAND gate (NG ₄ ) The function of one song selection switch SW ₁ is first selected in the RS flip-flop so that the output from the NAND gate NG ₆ by the selection switch SW ₂ is more than the output of the AND gate AG ₂ .

Therefore, it is possible to prevent the continuous recording without need, while at the end of the song as in the above-described one song selection function, a no-recording part is formed and the voltage applied to the motor M is cut off by the operation of the transistor TR ₂ . I'm waiting for the song.

When the user does not want to form a no-recording part, the outputs of the AND gates AG ₃ and AG ₄ are "low" because the two selection switches SW ₁ and SW ₂ are turned off and an audio signal is input. (OG ₁ ) is also " low " so that the AND gate AG ₈ outputs " low " by the counter CT ₁ and the flip-flop FF1, so that the transistor TR ₁ is driven by the AND gate AG ₉ . Is off.

In other words, since it is always off because of the "low" of the OA gate (OG ₁ ), no recording part is formed and the end gate (AG ₃ , AG ₄ ) is used while there is a voice input even when the selector switch (SW ₁ , SW ₂ ) is pressed during recording. ) Since the output is "low", the switch selection input signal that was pressed only when the song was finished and the "high" signal for the absence of the audio signal are inputted, and the outputs of the AND gates AG ₃ and AG ₄ and the oragate ( Since the output of "high" at the input of OG ₁ ), the AND gate AG ₉ may output "high" to automatically form a no-recording portion.

As described above, when the user wants to form a non-recorded portion on the cassette tape, when a user selects two select switches to record one song and then the next song, a lot of time is required or vice versa. If the function selection switch is selected accordingly and no recording part is formed, muting is not performed by not selecting the selection switch. Even if the two selection switches are turned on at the same time, the first song selection switch operates preferentially. It prevents recording, and remembers this even when the selection switch is turned on during recording, and there is an advantage of forming a constant recording part when the song ends.

Claims (1)

In the recording control circuit of the automatic selection device, a voice signal is received and recorded on a tape, and muting is performed, and an amplified signal of the input voice is compared with a reference signal, and the waveform is shaped to generate a logic signal according to the presence or absence of a voice signal. And mute circuit 10 and operation signal of one song selection and continuous selection switch are received and the selection according to the function is controlled according to this operation. When two switches are pressed simultaneously, one song is selected first to solve the problem of misoperation. And muting in the recording and muting circuit 10 when there is no input signal for a predetermined time at the output of the selection and display unit 20 and the recording and muting circuit 10 and the selection and display unit 20 for displaying a function operation state. Control signal is generated so that the recording part of a certain length is formed by the set time and displays the status according to the function operation, and the selection switch during recording Processing and control of the non-recorded portion, the selection of the selection and display unit 20 and the output of the logic control unit 30 Automatic recording control circuit of the recording unit of the automatic selection device, characterized in that consisting of a motor control unit 40 for controlling the driving of the motor with a reset function when trying to record the song quickly.