KR910008405B1 - Multi-function remote control circuit of headphone stereo sound apparatus - Google Patents

Abstract

The tape recoder control function and the radio control function are selected by the controller and the functions accompanied by the selected function are controlled either. The controller includes a mode selection controller (9) connected between channel terminals and a multi function control terminal, a first and a second coupler (C1,C2) connected between the channel terminals, and a first and a second head phone and a mode selector (3) which input terminal is connected to the multi function control terminal and which output terminals are connected to a tape controller (4) and a radio controller (5). The mode selection controller switches DC voltage of a first and a second amplifier (1.2) and applies to the multi function control terminal to select the tape recorder control function or the radio control function

Description

Multifunctional remote control circuit of headphone stereo sound device

1 is a circuit diagram of a main body according to the present invention.

2 is a diagram of a headphone and a control box according to the present invention.

3 is a circuit diagram of a headphone and a control box according to the present invention.

* Explanation of symbols for main parts of the drawings

10: main body 20: control box

FF: flip-flop D1: diode

HP1-HP2: first-second headphone C1, C2: capacitor

VR1-VR2: first-second variable resistor R3-R6: resistance

Q1: Transistor S1-S5: First-Fifth Switch

The present invention relates to a remote control circuit of an audio device other than a remote control using a park, and more particularly, to a multifunctional remote control circuit suitable for a portable mini cassette of a headphone stereo.

In general, the function of limiting the remote control of the remote control device to remotely control the acoustic device was to perform only play or power "on", "off", or volume up-down, Multifunction remote control could not be performed with one of the tape recorder and radio controls selected. In addition, although there is no multifunction control device having more functions than the above functions, the conventional multifunction control device uses a separate control connector wire so that it is not suitable for light and thin electronic products.

Accordingly, an object of the present invention is to provide a multi-function remote control circuit capable of controlling a plurality of types of remote control of the selected control function while selectively controlling the tape recorder control function and the radio control function for the multi-function control of the headphone stereo sound device. In providing.

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

1 is a block diagram of a main body according to the present invention, which is composed of a main body 10 and a four-terminal headphone jack 6 provided in the main body 10, and the main body 10 is formed of a stereo. The first and second amplifiers 1 and 2 for amplifying the first and second audio signals L and R and outputting the first and second channel signals a and b to the multifunction control terminal d. Each function selection input terminal (F1, F2) is connected in common and is selectively operated according to the input signal to each operation selection input terminal (S1, S2) to perform the multi-function control operation of the tape recorder and the radio, respectively. (4) and an input terminal connected to the radio controller 5 and the multifunction control terminal d, and to each operation selection input terminal S1, S2 of the tape controller 4 and the radio controller 5; First and second output terminals are connected, respectively, and one of the tape controller 4 and the radio controller 5 is alternated. To consist of a diode (D1) and a flip-flop (FF) mode selecting means (3) consisting of a selection in order to operate.

The four-terminal headphone jack 6 is for external connection of the ground terminal c, the first and second channel terminals a and b and the multifunction control terminal d.

2 is a diagram illustrating a headphone and a control box according to the present invention, which includes a control box 20, first and second headphones HP1 and HP2, and a four-terminal headphone plug 7. It is composed of

3 is a circuit diagram of a headphone and a control box according to the present invention, which is composed of first and second headphone heads HP1 and HP2 of a control box 20 and a four-terminal headphone plug 7. The headphone plug 7 controls the control box 20, the first and second channel terminals a and b, the ground terminal c, and the multi-function control through the four-terminal headphone jack 6 installed in the main body 10. The terminal d is correspondingly connected to the main body 10.

The control box 20 is connected between the switch group and the resistance group between the multi-function control terminal (d) and the ground terminal (c) in parallel to each other in the tape control channel (4) and the radio controller (5) of the main body (10) Multi-function control means 8 comprising a second- fifth switch S2-S5 and a resistor R4-R6 for remotely controlling the multi-function control operation, and the first and second channel terminals a and b. Is connected between the multi-function control terminal (d) and one of the tape recorder control function and the radio control function by switching the DC voltage appearing at the output signals of the first and second amplifiers (1, 2) of the main body (10). Mode selection control means (9) consisting of a resistor (R3), a transistor (Q1), and a first switch (S1) for applying to the mode selection means (3) of the main body (10) as a mode selection signal for alternating selection. And the output signals of the first and second amplifiers 1 and 2 of the main body 10 by being connected to the first and second channel terminals a and b. The first and second capacitors C1 and C2 as first and second coupling means for DC coupling, and the DC coupled signals by the capacitors C1 and C2, respectively. It consists of variable resistors VR1 and VR2 for applying to two headphones HP1 and HP2.

Based on the above-described configuration will be described in detail with reference to FIGS. 1 to 3 attached to the present invention.

First, the four-terminal headphone plug 7 of FIG. 2, the control box 20, and the first and second headphones HP1 and HP2 correspond to FIG. The tape controller 4 of FIG. 1 controls the function of the tape recorder, and the radio controller 5 controls the function of the radio. As described later, the tape controller 4 selects a mode of the user's tape recorder control function or radio control function. It works.

Assuming that the main body 10 of FIG. 1 performs the play operation of the tape recorder function or the broadcast reception operation of the radio function, the first and second audio signals L and R are the first and second amplifiers 1, Amplified in 2) is output to the first and second channel terminals (a, b). The first voice signal L is a voice signal of a left channel, and the second voice signal R is a voice signal of a right channel.

When the four-terminal headphone plug 7 of FIG. 2 is inserted into the headphone jack 6 of FIG. 1 in the above state, the first and second channel terminals a and b of FIGS. Since the same terminal, the first and second audio signals L and R of the first and second amplifiers 1 and 2 are DC-coupled from the capacitors C1 and C2, respectively. The first and second headphones HP1 and HP2 are driven through the VR1 and VR2. In this case, the first and second variable resistors VR1 and VR2 control the volume of the first and second headphones HP1 and HP2.

On the other hand, in the state where the power supply of the main body 10 is "on", there exists a quirk voltage more than Vcc / 2 (where Vcc is a power supply voltage) in the 1st, 2nd channel terminal a and b.

The presence of a voltage greater than or equal to Vcc / 2 in the first and second channel terminals a and b generally means that the first and second amplifiers 1 and 2 for connecting the output terminal of the sound device to the speaker are OTL ( Output Transformerless Amplifer). It is well known that the output terminal of the OTL amplifier is subjected to more than Vcc / 2 voltage.

The voltage Vcc / 2 or higher applied to the first channel terminal a is applied to the collector terminal of the transistor Q1 of the mode selection control means 9 and the voltage Vcc / 2 or higher applied to the second channel terminal b. Is applied to the base terminal of the transistor Q1 through the resistor R3 when the first switch S1 is turned on. That is, when the first switch S1 is turned "on", the voltage of Vcc / 2 or more appearing on the output terminals of the first and second amplifiers 1 and 2 through the first and second channel terminals a and b. The multifunction control terminal (d) is a mode selection signal in which the voltage of Vcc / 2 or higher selects the tape recorder control function or the radio control function through the emitter terminal of the transistor Q1 by turning on the transistor Q1. Is applied.

)의 상태로 서로 반전되어 각각 테이프 콘트롤러(4)의 동작 선택 입력단자(S1)와 라디오 콘트롤러(5)의 동작 선택 입력단자(S2)에 입력된다. 이에 따라 테이프 콘트롤러(4)가 동작하여 테이프 레코더 제어기능을 수행중이었다면 상기 제1스위치(S1)를 "온" 시킴에 따라 라디오 콘트롤러(5)가 동작상태로 되어 라디오 제어기능을 수행하게 되며, 이와 반대로 라디오 콘트롤러(5)가 동작하여 라디오 제어기능을 수행중이었다면 상기 제1스위치(S1)를 "온" 시킴에 따라 테이프 콘트롤러(4)가 동작 상태로 되어 테이프 레코더 제어 기능을 수행하게 된다.Since the multifunction control terminal d of FIGS. 1 and 3 is the same terminal, the mode selection signal of the Vcc / 2 or higher voltage outputted by the transistor Q1 is transmitted through the diode D1 of the mode selection means 3. It is input to the clock terminal CLK of the flip-flop FF. Then, the output terminal Q, of the flip-flop FF

Are inverted from each other to the operation selection input terminal S1 of the tape controller 4 and the operation selection input terminal S2 of the radio controller 5, respectively. Accordingly, if the tape controller 4 is operating to perform the tape recorder control function, the radio controller 5 is operated to perform the radio control function by turning on the first switch S1. On the contrary, if the radio controller 5 is operating to perform the radio control function, the tape controller 4 is in the operating state by performing the "on" switch of the first switch S1 to perform the tape recorder control function.

Therefore, each time the first switch S1 is turned on, the tape recorder control function and the radio control function are alternately selected.

In this case, the diode D1 is configured such that the inversion of the output signal of the flip-flop FF is performed only with a voltage of Vcc / 2 or more of the first channel terminal a when the transistor Q1 is turned on. That is, the direct current component which may appear in the function selection input terminals F1 and F2 of the tape controller 4 and the radio controller 5 is not controlled.

In addition, capacitors C1 and C2 for DC-coupling the first and second audio signals L and R, which are amplified and output from the first and second amplifiers 1 and 2, respectively, are typically built into the main body 10. On the other hand, in the present invention, the built-in control box 20 is intended to obtain a DC voltage for inverting the output signal of the flip-flop FF by "turning on" the first switch S1 before DC coupling. .

As described above, in the state in which one of the tape recorder control function or the radio control function is selected by the mode selection by the switching of the first switch S1, the tape controller 4 or the radio controller 5 is controlled by the user. Selecting one of the second to fifth switches S2-S5 of " 8 " and turning it on to perform different operations, i.e., multi-function control, according to information input to the respective function selection input terminals F1 and F2. do.

Wherein the multi-function control means 8 composed of the second- fifth switch (S2-S5) and the resistors (R4-R6) is a configuration circuit for a conventional multi-function selection, the second- fifth switch (S2-S5) By selectively turning ") on, information input to the tape controller 4 and the radio controller 5 is as follows.

When the second switch S2 of the multifunction control means 8 is "on", the resistor R4 is connected between the multifunction control terminal d and the ground terminal c, and the third switch S3 is "on". When the lower surface resistor R5 is connected between the multifunction control terminal d and the ground terminal c, and the fourth switch S4 is turned "on", the resistor R6 is connected to the multifunction control terminal d and the ground terminal ( c) connected between the multifunction control terminal (d) and the ground terminal (c) when the fifth switch (S5) is turned on. As the operation state is entered, different pieces of information (different resistance values) are applied to the tape controller 4 and the radio controller 5. Here, the number of control functions may be increased to the extent that the tape controller 4 and the radio controller 5 do not malfunction by forming a control function of the second to fifth switches S1 to S5 or more.

Therefore, the multi-function control can be performed remotely with one mode selected from the tape recorder control function by the tape controller 4 or the radio control function by the radio controller 5, and more types of multi-function control can be performed. have.

As described above, the present invention enables a plurality of remote control functions while selectively remotely controlling a tape recorder control function and a radio control function for multi-function control of a headphone stereo sound device, thereby making it possible to manufacture a product having a light weight and a shorter multi-function. There is an advantage.

Claims (1)

First and second amplifiers 1 and 2 for amplifying stereo first and second audio signals L and R and outputting them to the first and second channel terminals, respectively, and inputting respective function selections to the multifunction control terminals. Bonte 10 having a tape controller 4 and a radio coat roller 5 to which a terminal is commonly connected, and connected between the multifunction control terminal and a ground terminal, so that the tape controller 4 and the radio controller 5 are connected. In the multi-function remote control circuit of the headphone stereo sound device equipped with a control box 20 having a multi-function control means (8) for remotely controlling the multi-function control operation, and the first and second headphones (HP1, HP2) A DC voltage connected to the first and second channel terminals and the multi-function control terminal and installed in the control box 20 to switch the DC voltages of the output signals of the first and second amplifiers (1 and 2). Tape recorder control and radio control Between mode selection control means 9 for outputting to the multifunction control terminal as a mode selection signal for alternately selecting one, between the first and second channel terminals and the first and second headphones HP1 and HP2. Respectively connected to the control box 20 and connected to the first and second coupling means C1 and C2 for direct current coupling, and to the multifunction control terminal, and to the tape controller 4. First and second output terminals are connected to the operation selection input terminals of the radio controller 5, respectively, and are installed in the main body 10, and the tape controller 4 and the radio controller 5 are each time the mode selection signal is input. Multifunction remote control circuit, characterized in that it comprises a mode selection means (3) for alternately selecting one of the operation.

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