WO2016060303A1

WO2016060303A1 - Stereo automatic conversion audio output device

Info

Publication number: WO2016060303A1
Application number: PCT/KR2014/009768
Authority: WO
Inventors: 이종배; 박구택
Original assignee: 크레신 주식회사
Priority date: 2014-10-17
Filing date: 2014-10-17
Publication date: 2016-04-21

Abstract

The present invention relates to a stereo automatic conversion audio output device comprising: a first input unit and a second input unit which are connected to a portable terminal and receive audio input signals or operation power transmitted via the portable terminal; a first output unit and a second output unit which output the audio input signals received by the first input unit and the second input unit; a function unit which receives the operation power from the portable terminal via the first input unit or the second input unit and performs a unique function; a first switching unit for interrupting a path through which the operation power is supplied from the first input unit to the function unit; a second switching unit for interrupting a path through which the operation power is supplied from the second input unit to the function unit; and a third switching unit for interrupting a path which electrically connects the first input unit and the second input unit. Accordingly, even if one signal line is used as a power supply line in order to supply the operation power to the function unit of the stereo automatic conversion audio output device, the stereo automatic conversion audio output device receives audio input signals from the other signal line, and thus can receive stereo type audio.

Description

Stereo Auto Switchable Audio Output Device

The present invention relates to a stereo automatic switching audio output device.

With the development of portable terminals that perform various functions such as smart phones, the ability to store many files inside the portable terminal and to play various types of stored files, in particular through the ear jack interface provided in the portable terminal by playing audio files Various researches have been conducted on functions that can transmit sound signals of a reproduced audio file to a connected sound output device.

In particular, the sound output devices connected to the mobile terminal such as earphones and speakers may be used by adding a configuration for simultaneously implementing various other functions as well as basic sound signal output.

To this end, one of the four-pole earphone configuration in which the respective wires are allocated to the stereo (two poles), the ground (one pole), and the microphone (one pole) has recently been used. Techniques to replace and use the signal line to perform has been studied, but in this case, there is a problem that the sound is output in mono form because the signal line replaced for the performance of other functions does not perform the basic sound output function.

Thus, the prior art of the prior art prepared to convert the mono-type sound signal to the stereo form is described in "Registered mono-stereo stereo audio output device" (hereinafter, 'prior art') of Korea Utility Model Publication No. 20-0138977 Is called).

However, such a prior art includes a feature that allows sound to be output in stereo form without simply discriminating the position of the connection terminal, and the signal line itself provided to output the input sound is used as another signal transmission line for another purpose. In this case, there was a problem in that it could not automatically provide a stereo form of sound output.

The present invention was made to solve the above problems, and an object of the present invention is to output both signals even if one of the two signal lines for the audio signal transmission of the audio output device is used for the other type of signal transmission. It is to provide a technique for outputting an audio signal to all parts.

In order to achieve the above object, the stereo auto-switching audio output device of the present invention comprises: a first input unit and a second input unit connected to a portable terminal and receiving audio input signals or operation powers transmitted through the portable terminal, respectively; A first output unit and a second output unit configured to output audio input signals respectively received from the first input unit and the second input unit; A functional unit configured to receive operation power from the portable terminal through the first input unit or the second input unit to perform a unique function; A first switching unit for regulating a path from which the operating power is supplied from the first input unit to the functional unit; A second switching unit for regulating a path from which the operation power is supplied from the second input unit to the functional unit; And a third switching unit for controlling a path electrically connecting the first output unit and the second output unit.

The stereo automatic switching audio output device may include: a first sensing unit connected to the first input unit to sense operation power applied to the first input unit, and generating a control signal when the operation power is detected; A second sensing unit connected to the second input unit to sense operating power applied to the second input unit, and generating a control signal when the operating power is detected; And a controller configured to receive a control signal from the first sensing unit or the second sensing unit to turn on the third switching unit.

Here, the first switching unit is turned on by the operating power provided from the portable terminal through the first input unit to block a path from which the audio input signal is supplied from the first input unit to the first output unit, 1 Connect a path for supplying operating power from the input unit to the functional unit.

The second switching unit may be turned on by an operation power source provided from the portable terminal through the second input unit to block a path from which the audio input signal is supplied from the second input unit to the second output unit. 2 Connect a path for supplying operating power from the input unit to the functional unit.

The third switching unit may be configured to transmit the audio input signal to the first output unit and the second output unit by being turned on by the control unit and transmitted through a switching unit which is turned off from the first switching unit or the second switching unit. The first output unit and the second output unit are electrically connected to each other to be applied simultaneously.

According to the present invention, even if one signal line is used as a power supply line for supplying operation power to a functional unit of a stereo automatic switching audio output device, an audio input signal can be received from the remaining signal lines and consequently, stereo audio can be provided. have.

In addition, in operating the functional unit of the stereo automatic switching audio output device, by receiving power from the portable terminal through the input unit, it is possible to perform a specific operation of the functional unit without a separate battery and power supply means inside the audio output device. .

Fig. 1 shows a circuit configuration when the function unit of the stereo automatic switchable audio output device according to the embodiment of the present invention does not perform a function.

FIG. 2 is a circuit diagram illustrating a case where a function unit of a stereo automatic switchable audio output device according to an embodiment of the present invention performs a function by receiving power from a second input unit.

3 is a circuit diagram illustrating a case where a functional unit of a stereo automatic switching audio output device according to an embodiment of the present invention performs a function by receiving power through a first input unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, but the well-known technical parts will be omitted or compressed for brevity of description.

1 to 3, the components according to the exemplary embodiment of the stereo automatic switchable audio output device 100 according to the present invention will be described. 110); A second input unit 115; First output unit 120; Second output unit 125; Functional unit 130; First switch 140; Second switch 145; It includes; the third switch 150.

The first input unit 110 and the second input unit 115 are connected to the portable terminal 200 to receive audio input signals or operation powers transmitted from the portable terminal 200, respectively.

Here, the portable terminal 200 has a four-pole input and output interface so that devices having a four-pole plug such as earphones can be connected and function, and the stereo automatic switching audio output device 100 includes a first input unit. A plug-shaped jack including a 110 and a second input unit 115 is provided at the end.

The connection plug configured as described above is inserted into the four-pole input and output interface of the mobile terminal 200, and thus, the first input unit 110, the first output terminal 220, and the second input unit 115 as shown in FIG. By contacting the second output terminal 230, it is possible to transmit and receive the input signal between the portable terminal 200 and the stereo automatic switching audio output device 100.

The first output unit 120 and the second output unit 125 are connected to the first input unit 110 and the second input unit 115 to form a signal line, respectively, and the first input unit 110 and The audio input signal received from the second input unit 115 is output.

The function unit 130 receives operation power from the portable terminal 200 and performs a unique function of the stereo automatic switching audio output device 100. For example, the function unit 130 may perform an operation such as an offset sound output for amplifying or converting a voice signal or removing noise, and in the case of a media playback device, may perform multimedia playback. In addition, the functional unit 130 may be a device such as a lighting device or a sensor, and in this case, light emission and operation of a sensing function of the sensor may be performed.

In particular, the function unit 130 receives the noise from the outside of the stereo auto-switching audio output device 100, analyzes the frequency of the noise, and generates an offset sound having the frequency and antiphase to the output terminal of the function unit 130. It is preferable to perform an Active Noise Control (ANC) function that can be transmitted to the first output unit 120 and the second output unit 125 to actively control the noise.

Here, the function unit 130 requires an operation power source for performing various functions according to the type of the function unit 130, and the operation power source is an output terminal (from the power supply device 210 of the portable terminal 200). The

wires

220 and 230 and the

input units

110 and 115 are relayed to the functional unit 130 of the stereo automatic switchable audio output device 100 by relaying the conductive wires.

Here, as shown in FIG. 1, the movement path of the operating power delivered to the functional unit 130 starting from the power supply device 210 is in contact with the first output terminal 220 and the first input unit 110. One of the signal lines formed or the signal lines formed by contacting the second output terminal 230 and the second input unit 115 is provided.

The signal line and the second input unit connected to the first output unit 120 from the first input unit 110 to transfer the operating power applied through the first input unit 110 or the second input unit to the functional unit 130 as described above. A signal line branched at each point of the signal line connected to the second output unit 125 from the 115 and connected to the functional unit 130 is further configured.

In addition,

switching units

140 and 145 for intermittently moving the signals applied from the

input units

110 and 115 to the

output units

120 and 125 or the functional unit 130 are installed in the respective signal lines.

The first switching unit 140 is positioned on a signal line connected from the first input unit 110 to the first output unit 120, and when the signal line is normally used as an audio signal line, the audio input is turned off and applied. The signal is transmitted to the first output unit 120, and when operating power is applied to the first input unit 110, the signal is turned on by the operating power to transmit the operating power to the functional unit 130.

The second switching unit 145 is positioned on a signal line connected from the second input unit 115 to the second output unit 125, and when the signal line is normally used as an audio signal line, the audio input is turned off and applied. When the signal is transmitted to the first output unit 125 and the operating power is applied to the second input unit 115, the signal is turned on by the operating power to transmit the operating power to the functional unit 130.

For reference, the mobile terminal 200 is provided by connecting a power supply line for transmitting operating power from the power supply device 210 to one of the first output terminal 220 and the second output terminal 230. do. A power switch 240 is provided at a branch point connecting the

terminals

220 and 230 and the power supply device 210 in the portable terminal 200, so that switching is turned on only when operating power is applied to each terminal 220, Only one terminal of 230 is connected to the power supply 210.

The third switching unit 150 electrically connects a signal line connected from the first input unit 110 to the first output unit 120 and a signal line connected from the second input unit 115 to the second output unit 125. To crack down on the path.

Here, one end of the third switching unit 150 is connected to form a branching point behind the first switching 140 among the signal line connected from the first input unit 110 to the first output unit 120, the other end is connected In the signal line connected from the second input unit 115 to the second output unit 125 to form a branching point behind the second switching 145 is connected, so that the first switching 140 and the second switching 145 Affected by the turn on state.

The stereo automatic switching audio output device 100 of the present invention includes a first sensing unit 160; A second sensing unit 165; The control unit 170 further includes:

The first detecting unit 160 is connected to the first input unit 110 to detect the shape of the signal applied to the first input unit 110. More specifically, when the operating power is detected by detecting that the operating power is applied. The control signal is generated and transmitted to the controller 170.

The second sensing unit 165 is connected to the second input unit 115 to detect a form of a signal applied to the second input unit 115. More specifically, when the operating power is sensed by detecting that the operating power is applied. The control signal is generated and transmitted to the controller 170.

The controller 170 receives the control signal from the first sensing unit 160 or the second sensing unit 165 to turn on the third switching unit 150.

As a result, when operating power other than the audio input signal is applied through the first input unit 110 or the second input unit 115, the first sensing unit 160 or the second sensing unit 165 detects the control signal and controls the control signal. The control unit 170 sent to the 170 and receiving the control signal turns on the third switching unit 150 to turn on the signal line connected to the first output unit 120 from the first input unit 110 and the second input unit 115. ) Is electrically connected to the signal line connected to the second output unit 125.

As shown in FIG. 1, when the audio input signal input through the stereo auto switching audio output device 100 is output to the

output units

120 and 125, the

respective input units

110 and 115 are portable. The audio input signals are received through the

output terminals

220 and 230 of the terminal 200, and the audio input signals thus applied are output to the

respective output units

120 and 125. In this situation, each of the

sensing units

160 and 165 cannot detect the operation power, and as a result, does not transmit a control signal to the control unit 170.

In addition, since the operating power does not move in both signal lines, the first switching unit 140 and the second switching unit 145 are turned off to connect a path connecting the functional unit 130 from the

respective input units

110 and 115. It cuts off, and connects a path connecting the

respective output units

120 and 125 from the

respective input units

110 and 115 to form a signal line for the movement of the audio input signal.

However, in this case, any one of a signal line connected from the first input unit 110 to the first output unit 120 and a signal line connected from the second input unit 115 to the second output unit 125 is used for supplying operating power. When used as a power supply line, unlike the conventional method of outputting an audio input signal in stereo, an output part connected to a side used as a power supply line cannot output an audio input signal, thereby causing a mono audio output. .

Therefore, according to the present invention, a first line for electrically connecting a signal line connected from the first input unit 110 to the first output unit 120 and a signal line connected from the second input unit 115 to the second output unit 125 is provided. Since the three switching unit 150 is included in the configuration, even if one signal line is used as the power supply line to transmit the operating power to the function unit 130, the audio output of the stereo system is automatically enabled.

For example, when an audio input signal is applied to the first input unit 110 and an operating power is applied through the second input unit 115, as shown in FIG. 2, the first switching unit 140 is turned. It turns off to block the path connecting the functional unit 130 from the first input unit 110, and connects the path connecting the first output unit 120 from the first input unit 110 to connect the first input unit 110. A path for outputting the audio input signal applied through the first output unit 120 and the second switching unit 145 is turned on by an operating power source to connect the functional unit 130 from the second input unit 115. The control unit 130 by blocking the path connecting the second output unit 125 from the second input unit 115 and supplying operating power applied through the second input unit 115 to the functional unit 130. ) To perform a specific function.

In addition, the second detection unit 165 detects the operating power applied to the second input unit 115 and transmits a control signal to the control unit 170, and the control unit 170 receiving the control signal is the third switching unit. The audio input signal applied through the first input unit 110 by electrically connecting the signal line connected from the first input unit 110 to the first output unit 120 and the second output unit 125 by turning on 150. Is also output to the second output unit 125.

In another example, when the operating power is applied to the first input unit 110 and the audio input signal is applied through the second input unit 115, as shown in FIG. 3, the second switching unit 145 is used. Is turned off to block the path connecting the functional unit 130 from the second input unit 115, and connect the path connecting the second output unit 125 from the second input unit 115 to the second input unit 115. Enable to output the audio input signal applied to the second output unit 125, the first switching unit 140 is turned on by the operating power to connect the functional unit 130 from the first input unit 110 By connecting the path to the path, and the path connecting the first output unit 120 from the first input unit 110 to provide a functional unit 130 by supplying the operating power applied through the first input unit 110 to the functional unit 130 Let 130 perform a specific function.

In addition, the first detection unit 160 detects the operating power applied to the first input unit 110 and transmits a control signal to the control unit 170, the control unit 170 receiving the control signal is a third switching unit The audio applied through the second input unit 115 by electrically connecting the signal line connected from the second input unit 115 to the second output unit 125 and the first output unit 120 by turning on 150. The input signal is also output to the first output unit 120.

As a result, even if one of the signal lines for the movement of the audio input signal is used for the power supply line to supply the operating power to the functional unit 130, there is no change in the way of the audio output, the user is the functional unit 150 You can receive audio in stereo form at the same time that you receive a certain function through).

In addition, the functional unit 130 that receives the operation power is operated to perform a unique function of the stereo automatic switching audio output device 100 provided in a specific form, and as a result, the stereo automatic switching audio output device 100 is It is possible to receive power through the mobile terminal 200 without having to provide its own power supply device or design a separate power supply line.

The embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection should be construed by the claims below, and all technical ideas within equivalent scope shall be construed as being included in the scope of the present invention.

(Sign description)

100: Stereo automatic switching audio output device

110: first input unit

115: second input unit

120: first output unit

125: second output unit

130: function

140: the first switching unit

145: second switch

150: third switching unit

160: the first detection unit

165: second detection unit

170: control unit

200: mobile terminal

210: power supply

220: first output terminal

230: second output terminal

240: power switching

Claims

A first input unit and a second input unit connected to the portable terminal and receiving audio input signals or operation powers transmitted through the portable terminal, respectively;

A first output unit and a second output unit configured to output audio input signals respectively received from the first input unit and the second input unit;

A functional unit configured to receive operation power from the portable terminal through the first input unit or the second input unit to perform a unique function;

A first switching unit for regulating a path from which the operating power is supplied from the first input unit to the functional unit;

A second switching unit for regulating a path from which the operation power is supplied from the second input unit to the functional unit; And

And a third switching unit for controlling a path electrically connecting the first output unit and the second output unit.

Stereo auto switchable audio output.
The method of claim 1,

The stereo automatic switching audio output device,

A first sensing unit connected to the first input unit to sense operating power applied to the first input unit, and generating a control signal when the operating power is detected;

A second sensing unit connected to the second input unit to sense operating power applied to the second input unit, and generating a control signal when the operating power is detected; And

And a controller configured to turn on the third switching unit by receiving a control signal from the first sensing unit or the second sensing unit.

Stereo auto switchable audio output.
The method of claim 1,

The first switching unit,

It is turned on by the operating power provided from the portable terminal through the first input unit to block a path from which the audio input signal is supplied from the first input unit to the first output unit, and operating power from the first input unit to the functional unit. Characterized in that connecting the supply path

Stereo auto switchable audio output.
The method of claim 1,

The second switching unit,

It is turned on by the operating power provided from the portable terminal through the second input unit to block a path from which the audio input signal is supplied from the second input unit to the second output unit, and operate power from the second input unit to the functional unit. Characterized in that connecting the supply path

Stereo auto switchable audio output.
The method of claim 2,

The third switching unit,

The first output unit is turned on by the control unit so that the audio input signal transmitted through the switching unit turned off among the first switching unit or the second switching unit is simultaneously applied to the first output unit and the second output unit. And electrically connecting the second output unit to each other.

Stereo auto switchable audio output.