KR101187143B1 - Apparatus and method External the device cognition - Google Patents

Abstract

The present invention relates to an apparatus and a method for automatically recognizing a type of external device connected based on a plug-receptacle.

The present invention includes a resistance element having a resistance value uniquely determined for each external device in a plug to automatically recognize the type of external device connected based on a plug-receptacle, and electrically connecting the resistance device. And a resistance terminal for forming a voltage distribution circuit together with the plug resistance element when the plug is connected to the receptacle together with the audio terminal of the plug, and detecting a voltage value according to the type of the external device. In addition, the present invention provides an external device recognition apparatus and method for recognizing an external device connected to a receptacle-plug based on a sensed voltage value to increase recognition rate and suppress unnecessary noise.

Earphone Jack, Earphone Plug, Audio Control, MP3

Description

 Apparatus and method External the device cognition}

1 is a view showing an audio control apparatus according to the prior art.

2 is a diagram showing the configuration of an audio control apparatus according to the present invention;

3 is a view showing the configuration of a plug (plug) and a receptacle (receptacle) connected in the audio control apparatus according to the present invention .

4 is a flowchart illustrating an audio processing control procedure according to a recognition result when an external device is an output device in the present invention .

5 is a flowchart illustrating an audio processing control procedure according to a recognition result when an external device is an input device in the present invention .

DESCRIPTION OF THE REFERENCE NUMERALS

200: receptacle (audio jack). 202: storage unit.

204: sensing unit. 206: Audio signal processing unit.

208: Audio control device. 300: plug.

302: insulator. 304: output device.

304a: left output. 304b: right output.

The present invention relates to an apparatus and a method for automatically recognizing a type of external device to be connected based on a plug-receptacle.

In addition to basic communication functions and information management, portable terminals such as PDAs, mobile phones, and notebook computers play MP3 audio and audio files such as MPEG data due to expansion of CPU and memory. .

In a typical portable terminal, the audio data is output by being connected to a speaker on the portable terminal, or outputted to an external output device such as an earphone connected to the connection by providing a connection for external output.

1 is a view of an audio control apparatus according to the prior art.

As shown in FIG. 1, in an audio player such as an MP3 player, the audio controller 110 may output audio data output from a storage medium (internal memory, external memory, CD, etc.) in which an audio signal is stored. An audio processing unit 100 for receiving an input and processing a signal as an audio signal, and an earphone jack 102 for outputting an audio signal output from the audio processing unit 100 to an external output device 108 such as an earphone / headphone or an external speaker. It is configured to include, and may include a built-in speaker 106 for outputting the audio signal output from the audio processing unit 100.

The external output device 108 is connected to the earphone jack 102 using a plug 104.

In addition, the audio processor 100 includes a sensing unit 101 for sensing the impedance of the device connected to the earphone jack 102 to distinguish the type of the device.

As shown in FIG. 1, when the earphone plug 104 is connected to the earphone jack 102 by the user, the sensing unit 101 of the audio processing unit 100 is externally connected via the earphone jack 102-plug 104. The type of the external device is recognized by sensing the internal impedance of the device, that is, the output device 108.

In this case, the sensing unit 101 senses the impedance of the external device by transmitting a signal of a predetermined frequency to the plug 104 through the earphone jack 102 based on the earphone jack 102-plug 104 The internal impedance of the external device (in this case, the output device) connected to the system is measured.

The earphone jack 102 includes a left connection terminal for outputting a left audio signal and a right connection terminal for outputting a right audio signal.

The plug 104 includes a left input terminal for receiving a left audio signal and a right input terminal for receiving a right audio signal.

When the plug 104 is connected to the earphone jack 102, the left connection terminal is connected to the left input terminal (L), and the right connection terminal is connected to the right input terminal (R).

The audio processor 100 recognizes that the plug 104 is connected to the earphone jack 102 by the impedance sensed by the sensing unit 101, and determines what kind of external device is connected using an impedance. After the determination, the storage device stores the audio data and / or audio data input from the CD, and processes the signal according to the external device of the determined type to output the earphone jack 102.

Determining the type of the external device means determining the type of a device for outputting audio data such as earphones / headphones or an external speaker or a device for inputting audio data such as a microphone.

The signal-processed audio signal is output by being divided into a left audio signal and a right audio signal.

The earphone jack 102 transmits the audio signal to the plug 104 to be output to the output device 108 of the earphone plug 104.

If the plug 104 is not connected to the earphone jack 102, the signal processor 100 recognizes that the plug 104 is not connected to the earphone jack 102, and processes the audio signal. May be output to the speaker 106.

However, when the impedance is measured by sending a frequency signal to an external device as described above, and the type of the audio device is classified according to the measured impedance, the same device has a different impedance according to the manufacturer, and each device Since the difference in internal impedance is not so large, the range that the system can determine the impedance is too narrow, increasing the probability of misrecognition. In this case, a headphone is connected, but the system recognizes it as a microphone or a line in device is connected, but it recognizes it as a speaker. In this case, in some cases, the user is required to correct the recognition error by manual operation.

In addition, noise is generated in the audio signal due to a signal of a constant frequency output to measure the impedance, and therefore, it is necessary to take a momentary noise output and sound quality deterioration.

The present invention provides an apparatus and method for automatically recognizing a type of an external device based on the impedance measurement of the external device.

In addition, the present invention is to recognize the type of external devices that are connected based on a plug (receptacle), the ID device having a unique value for each external device and the ID device is electrically involved in the sensing circuit An apparatus and method for automatically recognizing a type of an external device from an electric signal value are provided.

In addition, the present invention is to recognize the type of external devices that are connected based on the plug (plug) receptacle (receptacle), in the plug of the external device having a resistance element having a specific resistance value for each device type, the plug is connected to the receptacle An apparatus and a method for sensing a voltage value for each device type according to the resistance element and automatically recognizing the type of the corresponding external device using the detected voltage value when connected are provided.

In order to achieve the above object, the present invention is to recognize the type of external device that is connected based on the Plug (Plug)-Receptacle (Receptacle); An ID element electrically connected to an external device plug and having a unique value for each type of device; And a detector configured to detect a type of a corresponding external device from an electric signal value due to the ID device being electrically interposed when the plug is inserted into the receptacle.

In addition, according to the present invention, the ID element is characterized in that the passive element.

In addition, according to the present invention, the sensing unit is characterized in that it detects the type of the external device from the voltage value according to the ID element is involved.

In addition, according to the present invention, the type of external device connected based on the Plug-Receptacle may be any one of a headphone / earphone, a speaker, a microphone, and a line input / output device.

According to the present invention, the ID element is a resistance element having a unique resistance value determined for each type of external device.

The present invention relates to a device for recognizing a type of external device connected based on a plug-receptacle, and includes a resistance element having a unique value for each device type to indicate an audio signal terminal and a corresponding device type. A plug; A receptacle to which the plug is connected; A voltage detector configured to detect a voltage value due to the electrical connection of the resistor when the plug is inserted into the receptacle; And a determining unit determining a type of an external device connected based on the receptacle-plug according to the sensed voltage value.

In addition, according to the present invention, the determination unit may include a sense voltage value table corresponding to the type of the external device.

The present invention may further include a communication unit for updating a sense voltage value table included in the determination unit.

In addition, according to the present invention, the communication unit is characterized in that the USB port.

In addition, according to the present invention, the type of external device connected based on the Plug-Receptacle may be any one of a headphone / earphone, a speaker, a microphone, and a line input / output device.

Further, according to the present invention, the resistance element having a unique value for each type of the device is allowed to accept a value of '0'.

The present invention relates to a device for recognizing a type of external device connected based on a plug-receptacle, comprising: an audio signal terminal, a resistance element having a unique value for each device type to indicate the type of the device; A plug including a resistor terminal connected to the receptacle to electrically connect the resistor to the sensing unit; A receptacle to which the plug is connected, the receptacle including an audio signal terminal and a sensing terminal connected to a resistance terminal of the plug; A resistance element forming a voltage distribution circuit with the resistance element of the plug when the plug is connected to the receptacle according to electrical connection of the resistance terminal and the detection terminal; And an audio signal processor for detecting a voltage value distributed by the resistor elements when the plug is inserted into the receptacle, and determining a type of external device connected based on the receptacle-plug according to the sensed voltage value. Characterized in that made.

In addition, according to the present invention, the audio signal processing unit may perform signal processing according to the determined external device type.

Further, according to the present invention, the sensed voltage value is characterized by having a ± error range by a ± error range of a resistance element.

The present invention relates to a method of recognizing a type of external device connected based on a plug-receptacle, and includes an audio signal terminal and a resistance element having a unique value for each type of device to indicate the type of the device. Detecting a voltage value according to an intrinsic resistance value according to an external device type of the plug when a plug including a plug and a receptacle are connected; Comparing the detected voltage value with a stored voltage value corresponding to each device type; And determining the type of external device according to the comparison result.

In addition, the present invention is characterized in that it comprises the step of signal processing and outputting the audio signal corresponding to the voltage value of the external device, the type of the external device is determined according to the comparison result.

Hereinafter, an embodiment of an audio control apparatus having a plug connected to a receptacle according to the present invention will be described in detail with reference to the accompanying drawings.

2 and 3 are views showing the configuration of the audio control apparatus according to the present invention, Figure 2 is a view showing a configuration in which the plug and receptacle (audio jack) is separated, Figure 3 is a plug and receptacle is connected It is a figure which shows the structure of a state.

First, as shown in FIG. 2, the audio controller 208 includes a left connection terminal L for outputting a left audio signal from an audio signal, a right connection terminal R for outputting a right signal, and an ID which is unique information of a device. A receptacle 200 including a sensing terminal S connected to an element, and an ID element which is unique information of an external device connected to the receptacle 200 through the sensing terminal S of the receptacle 200. An audio signal processor 206 including a sensing unit 204 for sensing a voltage value according to the present invention, and a storage unit 202 storing information on the type of an external device according to the voltage value sensed by the sensing unit 204. It is configured to include).

Here, the audio signal processor 206 determines the type of the external device by using the voltage value sensed by the sensing unit 204 and the voltage information of the external device stored in the storage unit 202, and determines the determined external device. Perform signal processing according to the type.

As shown in FIG. 2, the plug 300 connected to the receptacle 200 of the audio control device 208 receives a left input terminal L ′ for receiving a left audio signal from an audio signal and a right audio signal. And a terminal S 'connected to the ID element R2, having an input terminal R' on the right side of the input and an ID element R2 which is unique information of an external device, for example, the output device 304. It is configured by.

The left input terminal L ', the right input terminal R', and the ID element connecting terminal S 'of the plug 300 are configured to be distinguished through the insulator 302, respectively.

In addition, the left input terminal L 'and the right input terminal R' are connected to each of the left output unit 304a and the right output unit 304b of at least one or more output devices 304.

FIG. 3 is a diagram illustrating a configuration in which a plug-receptacle is connected in the audio control apparatus according to the present invention.

As shown in FIG. 3, a plug 300 that receives an audio signal by a user is connected to the receptacle 200 of the audio control apparatus 208.

The left input terminal L 'of the plug 300 connected to the receptacle 200 is connected to the left connection terminal L (contact point A), and the right input terminal R' is the right connection terminal R. ) And the ID element connection terminal S 'are connected to the sensing terminal S (contact point C).

Then, the sensing unit 204 of the audio control device 208 receives the voltage value output by the voltage divider circuit of the resistor element R1 of the receptacle 200 and the ID element R2 of the plug 300. Sensing and transmitting to the audio signal processor 206.

The ID element R2 is a resistance element having a unique resistance value determined for each type of external device, and the voltage value has a ± error range due to the ± error of the resistance element R1 and the ID element R2.

The voltage information of the external device stored in the storage unit 202 is summarized as follows.

Referring to Table 1, the voltage value a1 of the headphone HP and the headphone HP, which is an output device a for receiving an audio signal according to the type of the plug 300 and outputting the audio signal to the outside, Line-In and Line-In, which are input devices (b) that receive audio signals from a speaker (Speak) and the speaker (Speak) and an external audio signal Value b1, the microphone MIC and the voltage value b2 of the microphone MIC.

The voltage information table 1 may be updated by a wired / wireless communication network of the communication unit.

Referring to Table 1, the audio signal processor 206 stores the voltage value sensed by the sensing unit 204 and the type (a), a2, b1, b2 of (a) or (b). The voltage values of the voltage information stored in the unit 202 are compared.

If the voltage value sensed by the sensing unit 204 is, for example, 3.8 [V], the audio signal processing unit 206 compares the voltage value of the voltage information stored in the storage unit 202, for example. For example, the headphone of a1 is determined in Table 1 corresponding to 3.8 [V].

 The audio signal processor 206 processes the audio data output from a storage medium (internal memory, an external memory, a CD, etc.) in which an audio signal is stored, in accordance with the determined headphone, thereby receptacle 200. Will output

The audio signal transmitted to the receptacle 200 is output through the contact A and the contact B to the left output unit 304a and the right output unit 304b of the output device 304 of the headphone.

If the voltage value sensed by the sensing unit 204 is 2.5 [V], for example, the audio signal processing unit 206 compares the voltage value of the voltage information stored in the storage unit 202, for example. , The speaker of a2 is determined in Table 1 corresponding to 2.5 [V].

 The audio signal processor 206 processes the audio data output from the storage medium in which the audio signal is stored in accordance with the determined speaker and outputs the audio data to the receptacle 200.

The audio signal transmitted to the receptacle 200 is output to the left output unit 304a and the right output unit 304b of the output device 304 of the speaker through contact A and contact B.

As described above, the receptacle 200 is responsible for audio output, and the audio plug 300 receives audio from the receptacle 200 and transmits the audio to the output device 304 of the external device. As shown in b2), the audio plug 300 receives an audio signal from an audio input device such as a microphone and outputs the audio signal, and the receptacle 200 receives the audio signal output through the audio plug 300. 206), the same may be applied as described above.

If the voltage value sensed by the sensing unit 204 is 0 [V], for example, the audio signal processing unit 206 compares the voltage value of the voltage information stored in the storage unit 202, and then, for example. For example, the line-in of b1 is determined in Table 1 corresponding to 0 [V].

The audio signal processor 206 stores the audio signal input to the line-in from an external device that outputs an audio signal in a temporary storage unit (not shown) through the contact A and the contact B, and then stores the audio signal in the line-in. The audio data is signal-processed accordingly and stored in the storage unit 202.

If the voltage value sensed by the sensing unit 204 is 1.24 [V], for example, the audio signal processing unit 206 compares the voltage value of the voltage information stored in the storage unit 202, and then, for example. For example, the microphone of b2 is discriminated from Table 1 corresponding to 1.24 [V].

The audio signal processing unit 206 receives the audio signal input through the microphone through the contact A and the contact B, stores the audio signal in a temporary storage unit (not shown), and then processes the signal into audio data according to the microphone to store the storage unit ( 202).

If the sensing unit 204 of the audio signal processing unit 206 senses a voltage value, for example, 5 [V] by the resistor R1 and transmits the voltage value to the audio signal processing unit 206, the audio signal processing unit 206 determines that the plug 300 is not connected to the receptacle 200.

4 is a flowchart illustrating an audio processing control procedure according to a recognition result when the external device of the present invention is an output device.

As shown in FIG. 4, when the plug 300 that receives an audio signal by a user is connected to the receptacle 200 of the audio control apparatus 208, the sensing unit 204 may be configured to include a resistor element of the receptacle 200. R1) and the voltage value output by the voltage distribution circuit of the ID element R2 of the audio plug 300 is sensed and transmitted to the audio signal processor 206. (S400)

The ID element R2 is a resistance element having a unique resistance value determined for each type of external device, and the voltage value has a ± error range due to the ± error of the resistance element R1 and the ID element R2.

The left input terminal L 'of the plug 300 connected to the receptacle 200 is connected to the left connection terminal L (contact point A), and the right input terminal R' is the right connection terminal R. ) And the ID element connection terminal S 'are connected to the sensing terminal S (contact point C).

The audio signal processor 206 compares the voltage value sensed by the sensing unit 204 with the voltage value in the voltage information of the external device of Table 1 stored in the storage unit 202 (S402).

If the voltage value sensed by the sensing unit 204 is, for example, 3.8 [V], the audio signal processing unit 206 uses the headphones of a1 in Table 1 corresponding to, for example, 3.8 [V]. (S404)

The audio signal processor 206 determined as the headphone receives audio data output from a storage medium (internal memory, an external memory, a CD, etc.) in which an audio signal is stored, and processes the signal according to the headphone to receptacle 200. Will output

The audio signal transmitted to the receptacle 200 is output to the left output unit 304a and the right output unit 304b of the output device 304 of the headphone via the contact point A and the contact point B (S408).

In step S402, when the voltage value sensed by the sensing unit 204 is 2.5 [V], for example, the audio signal processing unit 206 is a2 in Table 1 corresponding to 2.5 [V], for example. Determine the speaker of the (S406).

The audio signal processor 206 determined as the speaker receives the audio data output from the storage medium in which the audio signal is stored, and processes the audio data according to the speaker to output the signal to the receptacle 200.

The audio signal transmitted to the receptacle 200 is output to the left output unit 304a and the right output unit 304b of the output device 304 of the speaker through contact A and contact B. (S408)

If the sensing unit 204 of the audio signal processing unit 206 senses a voltage value, for example, 5 [V] by the resistor R1 and transmits the voltage value to the audio signal processing unit 206, the audio signal processing unit 206 determines that the plug 300 is not connected to the receptacle 200.

5 is a flowchart illustrating an audio processing control procedure according to a recognition result when an external device is an input device according to the present invention.

 As shown in FIG. 5, a plug 300 that receives an audio signal from the outside by a user is connected to the receptacle 200 of the audio control apparatus 208.

Then, the sensing unit 204 of the audio control device 208 is a voltage output by the voltage distribution circuit of the resistor element R1 of the receptacle 200 and the ID element R2 of the audio plug 300. A value is sensed and transmitted to the audio signal processor 206. (S500)

The ID element R2 is a resistance element having a unique resistance value determined for each type of external device, and the voltage value has a ± error range due to the ± error of the resistance element R1 and the ID element R2.

The audio signal processor 206 compares the voltage value sensed by the sensing unit 204 with the voltage value in the voltage information of the external device of Table 1 stored in the storage unit 202 (S502).

If the voltage value sensed by the sensing unit 204 is, for example, 0 [V], the audio signal processing unit 206 is, for example, a line of b1 in Table 1 corresponding to 0 [V]. -Determine the phosphorus (S504).

Receives an audio signal input to the line-in from an external device that outputs an audio signal through the contact A and the contact B, and stores the audio signal in a temporary storage unit (not shown), and then processes the signal into audio data according to the line-in. The data is stored in the storage unit 202. (S508)

When the voltage value sensed by the sensing unit 204 in step S502 is, for example, 1.24 [V], the audio signal processing unit 206 is b2 in Table 1 corresponding to, for example, 1.24 [V]. Determine the microphone of the (S506).

The audio signal processor 206 receives an audio signal input through the microphone through the contact A and the contact B, stores the audio signal in a temporary storage unit (not shown), and then processes the signal into audio data to fit the microphone. Stored in the unit 202.

If the sensing unit 204 of the audio signal processing unit 206 senses a voltage value, for example, 5 [V] by the resistor R1 and transmits the voltage value to the audio signal processing unit 206, the audio signal processing unit 206 determines that the plug 300 is not connected to the receptacle 200.

In the above, the present invention has been described with reference to its preferred embodiments, which are merely examples and are not intended to limit the present invention, and those skilled in the art do not depart from the essential features of the present invention. It will be appreciated that various modifications and applications are not possible that are not illustrated above.

For example, each component shown in detail in the embodiment of the present invention may be modified.

And differences relating to such modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.

The present invention has the following effects.

According to the present invention, not only the type of the external device can be determined, but also an audio signal of high quality can be provided to the user by signal processing, outputting and storing the audio signal to be suitable for the external device.

Claims (16)

delete delete delete delete delete A device that recognizes the type of external device connected based on a plug-receptacle, A plug including a resistance element having a unique value for each type of device to indicate an audio signal terminal and a type of the corresponding device; A receptacle to which the plug is connected; A voltage detector configured to detect a voltage value due to the electrical connection of the resistor when the plug is inserted into the receptacle; A determination unit that determines a type of the connected external device according to the sensed voltage value; A temporary storage unit for temporarily storing audio data input and output through the plug; When the type of the external device is determined by the determination unit, the audio signal processing unit converts the temporarily stored audio data to fit the determined external device, processes the signal according to the type of the determined external device, and outputs the signal to the outside. ; A storage unit for storing audio data output by the audio signal processor; The storage unit includes a table indicating a sensing voltage value corresponding to each type of external device. And a USB port for updating a sensing voltage value table included in the storage unit by connecting to a communication network. And the determining unit determines the type of the connected external device based on the detected voltage value based on the detected voltage value table. delete delete delete The method of claim 6, The external device recognition apparatus may be any one of a type of an external device connected based on the plug-receptacle, such as a headphone / earphone, a speaker, a microphone, and a line input / output device. The method of claim 6, External device recognition device, characterized in that the resistance element of the unique value for each type of the device allows '0'. A device that recognizes the type of external device connected based on a plug-receptacle, An audio signal terminal, a resistance element having a unique value for each device type to indicate the type of the corresponding device, and a resistance terminal for electrically connecting the resistance element to the sensing unit when connected to a receptacle. Plug; A receptacle to which the plug is connected, the receptacle including an audio signal terminal and a sensing terminal connected to a resistance terminal of the plug; A resistance element forming a voltage distribution circuit with the resistance element of the plug when the plug is connected to the receptacle according to electrical connection of the resistance terminal and the detection terminal; When the plug is inserted into the receptacle, the voltage value distributed by the resistor elements is sensed, the type of external device connected according to the detected voltage value is determined, and audio data input and output through the plug is temporarily stored. And, when the type of the external device is determined, converts the temporarily stored audio data to be suitable for the type of the determined external device, processes the signal according to the type of the determined external device, and outputs or stores the signal externally. It includes a processing unit; The audio signal processor includes a table representing a detected voltage value corresponding to each type of external device. And a USB port for accessing and updating the sensed voltage value table included in the audio signal processor in a communication network. And the audio signal processor determines a type of connected external device based on the sensed voltage value based on the sensed voltage value table. delete The method of claim 12, And the sensed voltage value has a ± error range by a ± error range of a resistance element. delete delete

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