WO2019231112A1 - Earphone, and device and system for testing same earphone - Google Patents

Abstract

The present invention provides an earphone, and a test device and a test system for the earphone. The test device for the earphone may comprise: a first and a second signal line which are connected to an audio jack of the earphone and receive an external control signal; an interface unit for receiving the control signal through the first and the second signal line and outputting control data corresponding to the control signal; and an audio processing unit for performing a preconfigured audio process, and performing a control operation corresponding to the control data with respect to an internal specific object to be tested, which performs the audio process.

Description

Earphone, test device and system of the earphone

The present invention relates to an earphone test, and more particularly, to an earphone that can be tested after a manufacturing process, a test apparatus, and a test system of the earphone.

Recently, earphones, headphones or headsets are widely used in mobile devices. Hereinafter, for convenience of description of the present invention, all devices that listen to audio through a wire such as earphones, headphones, or a headset are collectively referred to as earphones.

Earphones can be shipped after testing performance, etc. in the manufacturing stage or the finished product stage.

The earphone may be made to have a noise canceling function to provide an improved listening feeling of the audio.

The noise canceling function is likely to degrade in the final product stage if performance is adjusted in the manufacturing stage. Therefore, the noise canceling function is advantageous to tune performance at the finished product stage.

In addition to the noise canceling function described above, it is advantageous that various functions of the earphones be tested or tuned in the finished product stage. Therefore, there is a need for the development of a device that can easily test and tune performance of earphones in the finished product stage.

The present invention provides a control signal for testing or performance adjustment to the earphone of the finished product stage using the signal lines connected to the audio jacks, such as a left audio signal line or a light audio signal line, to perform a target test or performance adjustment. It is an object to provide an earphone, a test device and a test system of the earphone.

Another object of the present invention is to provide an earphone, a test apparatus and a test system of the earphone providing a path for transmitting a result signal corresponding to the above test or performance adjustment to the test unit.

The test device of the earphone of the present invention, the first and second signal lines connected to the audio jack of the earphone for receiving a control signal of the test device; An interface unit which receives the control signal through the first and second signal lines and outputs control data corresponding to the control signal; And receiving a left audio signal and a right audio signal through a left audio signal line and a right audio signal line connected to the audio jack, and performing the preset audio process, and then the left audio signal and the right audio signal are left speaker and light. And an audio processing unit which outputs to a speaker and performs a control operation corresponding to the control data with respect to a specific test target inside which performs the audio process.

In addition, the earphone of the present invention, an audio jack; A left audio signal line connected to said audio jack and receiving a left audio signal; A light audio signal line connected to the audio jack and receiving a light audio signal; An interface unit which receives an external control signal through the left audio signal line and the right audio signal line, and outputs control data corresponding to the control signal; Receives the left audio signal and the right audio signal, performs a preset audio process on the left audio signal and the right audio signal, and corresponds to the control data with respect to a specific test target therein that performs the audio process. An audio processing unit for performing a control operation; And a left speaker and a light speaker configured to receive the left audio signal and the right audio signal that have performed the audio process and output audio.

In addition, the test system of the earphone of the present invention, provides a control signal, the test unit can be connected to the audio jack of the earphone; A left audio signal line connected to said audio jack and receiving a left audio signal; A light audio signal line connected to the audio jack and receiving a light audio signal; An interface unit which receives an external control signal through the left audio signal line and the right audio signal line, and outputs control data corresponding to the control signal; And receive the left audio signal and the right audio signal, perform a preset audio process on the left audio signal and the right audio signal, and left the left audio signal and the right audio signal on which the audio process is performed. And an audio processing unit which outputs to a speaker and a light speaker, and performs a control operation corresponding to the control data with respect to a specific test target in which the audio process is performed.

The present invention has an effect that can easily test or adjust the performance of the earphone in the finished product stage.

In addition, the present invention has the effect of ensuring the reliability of the earphones shipped by testing or performance adjustment of the earphones in the finished product stage.

In addition, the present invention can easily test or adjust the performance of the earphone in the finished product stage, and by passing the result signal corresponding to the test or performance adjustment to the test unit, there is an effect that can be more accurately test or performance adjustment.

1 is a block diagram illustrating a preferred embodiment of the test system of the earphone of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The terms used in the present specification and claims are not to be construed as being limited to ordinary or dictionary meanings, but should be interpreted as meanings and concepts corresponding to the technical matters of the present invention.

The embodiments described in the specification and the configuration shown in the drawings are preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, various equivalents and modifications that can replace them at the time of the present application are There may be.

1 is a block diagram showing a preferred embodiment of the test system of the earphone of the present invention.

Referring to FIG. 1, the test system of the earphone according to the present invention includes a test unit 10, an audio jack 20, an audio processing unit 30, an interface unit 40, a left speaker EP_L, and a light speaker EP_R. It includes.

In the configuration of FIG. 1, the audio jack 20, the signal lines LL, RL, GL, ML connected to the audio jack 20, the audio processing unit 30, the interface unit 40, and the left speaker EP_L And the light speaker EP_R may be understood as a part included in an embodiment of the earphone of the present invention.

Among these, the signal lines LL, RL, GL, and ML connected to the audio jack 20, the audio processing unit 30, and the interface unit 40 are components included in the embodiment of the test apparatus of the earphone of the present invention. It can be understood as.

In the above configuration, the test unit 10 includes a port 12 to which the audio jack 20 is connected, and may provide a control signal or receive a result signal through the port 12.

The audio jack 20 has a structure for electrically connecting the terminal portion 22 and the wiring portion 24. The terminal portion 22 has a structure in which the terminal portion 22 is electrically connected to the test portion 10 by being plugged into the port 12.

More specifically, the terminal portion 22 of the audio jack 20 is configured to have a left audio terminal LT, a light audio terminal RT, and a ground terminal GT when configured to have tripolarity for stereo audio. In contrast, when configured to have four poles for stereo audio and a microphone, the terminal portion 22 of the audio jack 20 may further include a microphone terminal MT.

For convenience of description of the present invention, the audio jack 20 is described as having four-pole terminals for stereo audio and a microphone.

The wiring portion 24 of the audio jack includes signal lines corresponding to the terminals of the terminal portion 22. More specifically, the wiring unit 24 includes a left audio signal line LL electrically connected to the left audio terminal LT, a light audio signal line RL electrically connected to the right audio terminal RT, and a ground terminal. A ground signal line GL electrically connected to the GT and a microphone signal line ML electrically connected to the microphone terminal MT are included.

Corresponding to the configuration of the terminal unit 22 of the audio jack 20, the port 12 of the test unit 10 is also configured to have terminals (not shown) corresponding to the terminals of the audio jack 20 do.

In addition, the test unit 10 is configured to provide a control signal for testing and performance adjustment of the earphone. To this end, the test unit 10 may include a separate configuration for providing a control signal according to the test target or may include a configuration for changing and providing the control signal according to the test target.

For example, the test unit 10 may separately include a unit for controlling the micro computer (MCU) and the active noise canceling circuit (ANC) described below of the audio processing unit 30. That is, the test unit 10 provides a control signal for controlling the canceling frequency band of the mode setting unit (not shown) and the active noise canceling circuit (ANC) for providing a control signal for setting the mode of the microcomputer (MCU). The noise canceling setting unit (not shown) may be separately included.

In contrast, the test unit 10 includes a setting unit (not shown) so as to provide a control signal for controlling the microcomputer (MCU) and the active noise canceling circuit (ANC) in common, and the control unit is controlled in a suitable state according to the test object. It can be configured to change the signal and output.

The test unit 10 may be configured to provide a control signal for testing and performance adjustment of the earphone through first and second signal lines preset among the signal lines of the audio jack 20.

Here, the first and second signal lines may include two selected from among the write audio signal line RL, the left audio signal line LL, the microphone signal line ML, and the ground signal line GL. Embodiments of the present invention consist of using the write audio signal line RL and the left audio signal line LL as first and second signal lines.

In addition, the test unit 10 may receive a result signal through the audio jack 20, and may have a function of adjusting a control signal in response to the result signal.

With the above arrangement, the left audio signal line LL and the right audio signal line RL are used to provide an electrical path for carrying the control signal and the resultant signal.

Meanwhile, the interface unit 40 receives a control signal provided from the external test unit 10 through the left audio signal line LL and the write audio signal line RL, and outputs control data corresponding to the control signal. It is configured to.

The audio signal processing unit 30 receives the left audio signal and the right audio signal through the left audio signal line LL and the right audio signal line RL connected to the audio jack 20, and performs a preset audio process. After doing so, the left audio signal and the right audio signal are output to the left speaker EP_L and the right speaker EP_R. In addition, the audio signal processing unit 30 is configured to perform a control operation corresponding to the control data provided from the interface unit 40 with respect to a specific test target therein that performs the audio process.

The interface unit 40 and the audio signal processing unit 30 may be configured in parallel with respect to the left audio signal line LL and the right audio signal line RL. The interface unit 40 is configured to receive only control signals of the left audio signal line LL and the right audio signal line RL, and the audio signal processing unit 30 includes the left audio signal line LL and the right audio signal line. It may be configured to receive only the left audio signal and the right audio signal of the (RL).

First, the interface unit 40 includes a reverse voltage protection circuit (RVP), an analog serial interface transceiver (ASIT), a protocol emulation protector (PEP), and a serial interface controller (Serial). Interface Controller (SIC) may be included.

 Here, the reverse voltage prevention circuit RVP is configured to prevent the reverse voltage caused by the left audio signal of the left audio signal line LL and the right audio signal of the write audio signal line RL from being applied to the control signal. Have

The reverse voltage prevention circuit RVP may be configured using a diode or the like to prevent reverse voltage without degrading the quality of the left audio signal and the right audio signal.

The analog serial interface transceiver (ASIT) converts an analog control signal into digital control data. To this end, the analog serial interface transceiver (ASIT) may include an analog-to-digital converter.

In addition, the protocol emulation protector (PEP) prevents the control data from being changed due to the false signal input by the analog left audio signal and the write audio signal. To this end, the protocol emulation protector (PEP) may include an error check circuit for preventing data changes due to false signal input in digital processing.

In addition, the serial interface controller (SIC) is output from the analog serial interface transceiver (ASIT) and the test target included in the audio signal processing unit 30 control data that is prevented from being changed due to a false signal input by the protocol emulation protector (PEP). It can be configured to provide.

Meanwhile, the audio signal processing unit 30 may include a microcomputer (MCU), an active noise canceling circuit (ANC), a monitoring circuit (MON), and a memory (MEM).

Here, the microcomputer MCU performs a pre-set audio process on the left audio signal of the left audio signal line LL and the right audio signal line of the right audio signal line RL, and then the left audio signal and the right audio signal. Are output to the left speaker (EPL) and the right speaker (EP_R). The microcomputer (MCU) may perform an audio process by interworking with a peripheral circuit.

The microcomputer MCU may classify modes, control audio processes, or control output of left and right audio signals using options or data preset in the memory MEM.

The active noise canceling circuit ANC performs noise canceling on the left audio signal and the right audio signal. In exemplary embodiments, the active noise canceling circuit ANC may include a separate microphone that detects noise for noise canceling. The active noise canceling circuit ANC may mix the detected noise and the reverse phase signal with the left audio signal and the right audio signal. Noise on the left audio signal and the light audio signal is canceled by the signal of the reverse phase. As a result, the user can listen to the high quality audio corresponding to the left audio signal and the right audio signal through the left speaker EP_L and the right speaker EP_R.

The range (or band) of the canceling noise of the active noise canceling circuit ANC may be determined as an option in advance or by using data stored in the memory MEM.

The monitoring circuit MON may be configured to monitor specific states of the left audio signal and the write audio signal during audio processing, and provide data or a signal corresponding to the monitored result to a predetermined target (eg, a microcomputer). .

The memory MEM may be configured to store and provide data necessary for operation and control of the microcomputer MCU, the active noise canceling circuit ANC, and the monitoring circuit MON as described above.

At least one of components such as a microcomputer (MCU), an active noise canceling circuit (ANC), a monitoring circuit (MON), and a memory (MEM) of the audio signal processing unit 30 may be designated as a test target.

That is, the audio signal processing unit 30 may perform a control operation corresponding to the control data of the interface unit 40.

Therefore, embodiments of the present invention can provide control signals for testing or performance adjustment to earphones in the finished phase using signal lines connected to audio jacks such as left audio signal line LL or light audio signal line RL. It is possible to perform a target test or performance adjustment on the test target of the audio signal processing unit 30 by the control data of the interface unit 40.

In addition, the interface unit 40 may be a test object designated to any one of components such as a microcomputer (MCU), an active noise canceling circuit (ANC), a monitoring circuit (MON), and a memory (MEM) of the audio signal processing unit 30. Can be configured to receive a result signal from the control operation from the device.

In addition, the interface unit 40 may provide a path for transmitting the result signal to the test unit 10. The interface unit 40 uses a path for providing control signals and control data through a reverse voltage prevention circuit (RVP), an analog serial interface transceiver (ASIT), a protocol emulation protector (PEP), and a serial interface controller (SIC). A separate path can be formed from these to convey the resulting signal.

When delivering the result signal in a separate path, the interface unit 40 may be configured to convert the digital result signal to analog or may be configured to amplify and transmit the analog result signal to analog. The selection of the above-described configuration of the interface unit 40 can be determined in correspondence with the digital output of the resultant signal in the audio signal processing unit 30 and the analog output.

By the above configuration, the interface unit 40 may receive a result signal according to the test and performance adjustment from the test target, and may provide a path for transmitting the result signal to the test unit 10.

As a result, the present invention can ensure the reliability of the earphones shipped by testing or performance adjustment of the earphones in the finished product stage, and by performing the test or performance adjustment more accurately by transmitting a result signal corresponding to the test or performance adjustments Can be.

Claims (17)

1. First and second signal lines connected to an audio jack of the earphone and receiving external control signals;

   An interface unit which receives the control signal through the first and second signal lines and outputs control data corresponding to the control signal; And

   A left audio signal and a light audio signal are received through a left audio signal line and a light audio signal line connected to the audio jack, and after performing a preset audio process, the left audio signal and the right audio signal are left speaker and a light speaker. And an audio processing unit configured to perform a control operation corresponding to the control data with respect to a specific test target therein which performs the audio process.
2. According to claim 1,

   And the first and second signal lines comprise the light audio signal line and the left audio signal line.
3. According to claim 1,

   And the first and second signal lines comprise two selected from among the light audio signal line, the left audio signal line, the microphone signal line, and the ground signal line connected to the audio jack.
4. The method of claim 1, wherein the interface unit,

   An analog serial interface transceiver for converting the analog control signal into the digital control data;

   A protocol emulation protector which prevents the control data from being changed due to a false signal input by the analog left audio signal and the right audio signal; And

   And a serial interface controller configured to provide the control data to the test object.
5. The method of claim 4, wherein the interface unit,

   The apparatus of claim 1, further comprising a reverse voltage prevention circuit for preventing a reverse voltage caused by the left audio signal and the right audio signal from being applied to the control signal.
6. According to claim 1,

   The test object includes at least one of a microcomputer, an active noise canceling circuit, a monitoring circuit, and a memory,

   And the interface unit provides the control data to any one of the microcomputer, the active noise canceling circuit, the monitoring circuit, and the memory.
7. According to claim 1,

   And the interface unit receives a result signal according to the control operation from the test object, and provides a path for transmitting the result signal to the outside through the first and second signal lines.
8. Audio jacks;

   A left audio signal line connected to said audio jack and receiving a left audio signal;

   A light audio signal line connected to the audio jack and receiving a light audio signal;

   An interface unit which receives an external control signal through the left audio signal line and the right audio signal line, and outputs control data corresponding to the control signal;

   Receives the left audio signal and the right audio signal, performs a preset audio process on the left audio signal and the right audio signal, and corresponds to the control data with respect to a specific test target therein that performs the audio process. An audio processing unit for performing a control operation; And

   And a left speaker and a light speaker configured to receive the left audio signal and the right audio signal that have performed the audio process and output audio.
9. The method of claim 8, wherein the interface unit,

   An analog serial interface transceiver for converting the analog control signal into the digital control data;

   A protocol emulation protector which prevents the control data from being changed due to a false signal input by the analog left audio signal and the right audio signal; And

   And a serial interface controller configured to provide the control data to the test object.
10. The method of claim 9, wherein the interface unit,

    And a reverse voltage preventing circuit for preventing a reverse voltage caused by the left audio signal and the right audio signal from being applied to the control signal.
11. The method of claim 8, wherein the audio processing unit,

    The test object includes at least one of a microcomputer, an active noise canceling circuit, a monitoring circuit, and a memory,

    And the interface unit provides the control data to any one of the microcomputer, the active noise canceling circuit, the monitoring circuit, and the memory.
12. The method of claim 8,

    And the interface unit receives a result signal according to the control operation from the test object, and provides a path for transmitting the result signal to the outside through the left audio signal line, the right audio signal line, and the audio jack.
13. A test unit which provides a control signal and is connectable to an audio jack of an earphone;

    A left audio signal line connected to said audio jack and receiving a left audio signal;

    A light audio signal line connected to the audio jack and receiving a light audio signal;

    An interface unit which receives an external control signal through the left audio signal line and the right audio signal line, and outputs control data corresponding to the control signal; And

    Receiving the left audio signal and the right audio signal, performing a preset audio process on the left audio signal and the right audio signal, and performing the left audio signal and the right audio signal on the left audio signal And an audio processing unit which outputs to a light speaker and performs a control operation corresponding to the control data with respect to a specific test target in which the audio process is performed.
14. The method of claim 13, wherein the interface unit,

    An analog serial interface transceiver for converting the analog control signal into the digital control data;

    A protocol emulation protector which prevents the control data from being changed due to a false signal input by the analog left audio signal and the right audio signal; And

    And a serial interface controller to provide the control data to the test object.
15. The method of claim 14, wherein the interface unit,

    And a reverse voltage prevention circuit for preventing a reverse voltage caused by the left audio signal and the right audio signal from being applied to the control signal.
16. The method of claim 13, wherein the audio processing unit,

    The test object includes at least one of a microcomputer, an active noise canceling circuit, a monitoring circuit, and a memory,

    And the interface unit provides the control data to any one of the microcomputer, the active noise canceling circuit, the monitoring circuit, and the memory.
17. The method of claim 13,

    The interface unit is configured to receive a result signal according to the control operation from the test object, and to provide a path for transferring the result signal to the test unit through the left audio signal line, the right audio signal line, and the audio jack. Test system.

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