KR20030069471A - Sound input/output device and microphone-integrated earphone employing the same - Google Patents

Abstract

Disclosed are a sound input / output device having a microphone and a speaker inside a body, and a microphone integrated earphone using the same. The microphone integrated earphone of the present invention has a built-in microphone and a speaker in an earphone body inserted into a human ear, and an external microphone directed to the outside of the body is further added. In addition, a mode switching switch for selectively connecting an internal microphone and an external microphone to an input terminal is provided. Such an earphone may be input by a user using a built-in microphone or an external microphone selectively through a mode change switch according to an external environment. That is, in a noisy area, the mode change switch is placed in the noisy mode so that the voice generated from the user's ear is delivered to the other party through the built-in microphone. By transmitting to the other party through the noise can reduce the interference of the call. In addition, in the case of using an external microphone, power consumption can be reduced by cutting off the power supply of a circuit used to reduce call interference due to the proximity of the internal microphone and the speaker, and more clearly through the voice input generated from the mouth. You can pass a message.

Description

Sound input / output device and microphone-integrated earphone employing the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound input / output device, and more particularly, to an audio input / output device having a microphone (hereinafter referred to as a microphone) and a speaker (Speaker) inside a body, and a microphone integrated earphone using the same.

In general, devices such as earphones (headphones) have been used as auxiliary output means of main output devices such as portable audio players and portable radios. Recently, however, portable data transmitters and receivers such as mobile communication terminals and portable language learners implemented to record and reproduce their own voices have emerged. Earphones (headphones) are not merely auxiliary output means, but have a microphone. It is being developed to perform a function as an auxiliary input device.

1 is a perspective view of a general earphone with a microphone added. In the drawing, the earphone connects the connector 10 coupled to the input / output terminal of the main device such as a mobile phone, the speaker 20 having an external appearance to be inserted into a user's ear, and the connector 10 and the speaker 20. Is connected between the signal line 15, the microphone 30 installed on the signal line to be located in the oral cavity of the general person, and the signal line between the microphone 30 and the connector, the call answer button to respond to the ring tone of the mobile phone And a controller 40 with 42.

The microphone-type earphone as described above, when the mobile phone is called, the user presses the call answer button 42 formed on the controller, so that the user can make a call with the other party through the microphone 30 and the speaker 20 without direct manipulation of the mobile phone. do.

However, the microphone-type earphone as described above has a problem in that when the user moves or moves the body, the microphone 30 may be spaced apart from the user's mouth so that the message cannot be effectively delivered. In addition, since the microphone 30 is exposed to external noise, when there is a lot of noise, the microphone 30 is also delivered to the other party to the surrounding noise so that the user's message cannot be properly delivered to the other party.

In order to solve the above problems, the present applicant can reduce the external noise intake of the micro by using the feature that the oral cavity and the ear of the human body communicate with each other, and the sound input / which can effectively transmit the message even during the user's operation. There has been proposed an output device and a microphone integrated earphone applying the same (application number 10-2001-0061260). In addition, there has been proposed an audio input / output device and a microphone integrated earphone applying the same to reduce the howling and echo generated when the microphone and speaker are installed in the microphone integrated earphone as described above (Application No. 10-2001-). 0088886).

The conventional sound input / output device and the microphone integrated earphone using the same include a signal processor, and the signal processor adjusts the microphone input level and the speaker output level according to the transmission / reception mode. That is, the signal processor controls the input level of the microphone to be lowered when a sign language is detected, and minimizes the interference of calls caused by the proximity of the microphone and the speaker by controlling the speaker output level to be lowered when the microphone input is detected. And the occurrence of echoes.

However, the conventional sound input and output devices and earphones as described above have the advantage of performing two-way communication using a signal processing unit, but there is a problem of generating unnecessary power consumption because signal processing is necessarily performed in a non-noise area. In addition, even in a non-noisy region, there is a problem that a clear voice cannot be transmitted through the oral cavity of a person, and a comparatively incorrect voice generated from the ear can not be transmitted.

An object of the present invention is to provide a sound input and output device and a microphone integrated earphone applying the same to a non-noisy area in order to solve the above problems, while being able to reduce power consumption and transmit a message with a clear voice generated in the oral cavity. There is.

1 is a perspective view of a typical microphone-type earphone,

2 is a perspective view of a mobile phone earphone according to an embodiment of the present invention, and

3 is a block diagram of the earphone for a mobile phone shown in FIG.

* Description of the symbols for the main parts of the drawings *

10, 110: connector 20, 210: earphone speaker

30, 220, 230: microphone 40, 130: controller

42, 134: call answer button 120: earphone

122: insertion portion 124: protrusion

132, 262: mode switch operation switch 200: mobile phone

240: signal detector 250: switching element

260: mode changeover switch 264: mode changeover switch

A sound input and output device of the present invention for achieving the above object, the speaker for converting the output electrical signal to the sound output; A first microphone which is installed integrally with the speaker and converts the generated sound into an electrical signal and outputs the electrical signal; A second microphone for converting the generated sound into an electrical signal and outputting the converted sound; And a mode change switch for selectively connecting the first microphone and the second microphone to an internal input terminal.

The acoustic input / output device may further include: a signal detector configured to output an intermittent signal for controlling an electrical signal generated from the first microphone when an electrical signal transmitted to the speaker is detected; And a switching device for switching the electrical signal generated from the first microphone according to the intermittent signal output from the signal detection unit.

The mode switching switch is configured to cut off the power supplied to the signal detector when the sound is inputted through the second microphone.

Microphone and speaker integrated earphone to which the sound input and output device according to the present invention for achieving the above object is applied, a connector for electrically connecting with the main device; is installed in the body is formed so that a part can be inserted into the user's ear, A speaker for converting and outputting an electrical signal transmitted from the main device through the connector to sound; A first microphone installed inside the body and converting a sound generated from the user's ear into an electrical signal and outputting the sound to the main device through the connector; A second microphone installed outside the body and converting the generated sound into an electrical signal to output to the main device; And a mode change switch for selectively connecting the first microphone and the second microphone to a voice output terminal of the connector by a user's manipulation.

The microphone and speaker integrated earphone may further include: a signal detector configured to output an intermittent signal for intercepting an electrical signal transmitted from the first microphone to the connector when an electrical signal transmitted from the connector is detected; And a switching element connected between the first microphone and the connector, the switching element being opened and closed according to an intermittent signal output from the signal detection unit. Here, when the mode switch is operated to receive sound through the second microphone, it is implemented to cut off the power supplied to the signal detector.

In addition, the second microphone may be variously installed outside the main body, that is, the second microphone may be installed on a signal line as in the prior art, or may take the form of a bar protruding from the main body toward the user's mouth. Preferably, it is formed integrally with the main body opposite the ear inserting portion of the main body, and at this time, a directional microphone for collecting sound uttered in the user's mouth is used.

According to the acoustic input / output device of the present invention and the microphone and speaker-integrated earphone to which the same is applied, the user may change the first microphone and the first through the mode switching switch according to the external environment, that is, the noise and the surroundings are much less. 2 microphones can be used selectively, and the use of the second microphone can not only reduce power consumption, but also deliver messages more accurately with voice generated from the oral cavity.

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

2 is a perspective view of a necklace-type mobile phone earphone according to an embodiment of the present invention. The earphone for a mobile phone includes a connector 110, a microphone integrated earphone 120, and a controller 130.

The connector 110 is connected to an input / output terminal of the mobile phone 200.

The microphone integrated earphone 120 has a single body, and has an insertion portion 122 inserted into a user's ear and a protrusion 124 protruding out of the ear. The insertion part 122 is covered with a human body rubber (or sponge) to protect the user's ear and to close or seal the user's ear. Although not shown, the earphone and the built-in microphone are installed in the body toward the inside of the user's ear, and the external microphone is separated from the speaker and the built-in microphone by a shield to the protrusion. For convenience, the microphone formed toward the insertion part 120 with respect to the microphones built into the body is called a built-in micro, and a microphone formed toward the protrusion 124 is called an external microphone.

The controller 130 is installed between the connector 110 and the signal line connecting the microphone-integrated earphone 120, the mode switching operation switch 132 and the call answering material that can be operated in a noise mode or a normal mode by the user. It has a dialing button 134. The noise mode outputs the user's message input through the built-in microphone to the mobile phone 200. The normal mode outputs the user's message input through the external microphone to the mobile phone 200.

3 is a block diagram of the earphone for a mobile phone shown in FIG. The earphone includes a speaker 210, a built-in microphone 220, an external microphone 230, a signal detector 240, a switching device 250, and a mode switching switch 260.

Speaker 210 is installed inside the body 120 is formed so that a part can be inserted into the user's ear, and converts the electrical signal transmitted from the mobile phone 200 to the sound through the connector 110 to the user's ear do.

The built-in microphone 220 is installed with a speaker inside the body, and converts the sound generated from the user's ear into an electrical signal and outputs it to the mobile phone 200 through the connector 110.

External microphone 230 is installed on the protrusion 124 side opposite to the insertion portion 122 of the body 120, converts the sound generated in the oral cavity of the user into an electrical signal through the connector 110 To 200). At this time, the external microphone 230 is preferably a directional microphone to be used to pick up the voice generated from the oral cavity of the user.

The signal detector 240 detects an electrical signal output to the speaker 210 and outputs an intermittent signal for controlling an audio signal transmitted from the built-in microphone 220 to the input terminal of the mobile phone 200.

The switching device 250 is connected between the built-in microphone 220 and the microphone output terminal, and is switched in accordance with the intermittent signal output from the signal detector 240. The switching device 250 may use various devices capable of blocking / connecting between the built-in microphone 220 and the microphone output terminal in response to the blocking / connection signal of the signal detector 240. For example, a semiconductor device such as a transistor may be used, or a device such as a relay may be used.

The mode switching switch 260 includes a switching unit 264 for selectively connecting the built-in microphone connection terminal and the external microphone connection terminal to the microphone output terminal by the user's operation of the mode switching operation switch 262. The mode change operation switch 260 may select the built-in microphone 220 and the external microphone 230 in a slide form, and may select any one microphone in the form of a push button.

Earphones for the mobile phone as shown above can form a mobile phone ring on the bottom of the controller 130, as shown in Figure 2, the mobile phone can be hooked to the ring, the user walks the line around the cell phone 200 to the user's body Can be fixed at

On the other hand, when the connector 110 is connected to the input and output terminals of the mobile phone 200, the mobile phone 200 is called with a portion of the microphone integrated earphone body 120 is inserted into the user's ear, the user of the controller 130 By pressing the call answer button 134 it is possible to talk to the other party. At this time, when the position of the slide mode switching operation switch 262 is located to the noise mode side, that is, when the built-in microphone 220 is connected, the signal detector 240 is transferred from the mobile phone 200 to the speaker 210. When an electrical signal is detected, a blocking signal for blocking an input signal through the built-in microphone 220 is output to the switching element 250. Accordingly, the switching device 250 is opened. Then, the user's voice signal through the built-in microphone 220 is not transmitted to the mobile phone (200). On the other hand, the signal detector 240 outputs the connection signal to the switching element 250 while the electrical signal transmitted to the speaker 210 is not detected. Accordingly, the switching device 250 is short-circuited, and the voice signal input through the built-in microphone 220 is output to the mobile phone 200. This means that when two callers make a call at the same time, they cannot receive the message correctly, so that one side stops the call and thus performs one-way communication rather than two-way communication. Accordingly, it is possible to prevent howling and echo due to proximity installation of the speaker 210 and the built-in microphone 220 without using a separate signal processing logic.

In addition, the earphone for a mobile phone may use the built-in microphone 220 and the external microphone 230 according to an external environment. That is, when there is a lot of noise in the surroundings, the user places the mode switching operation switch 262 in the noise mode and transmits his / her voice to the other party through the built-in microphone 220 built in the earphone. And in the case of an area with less noise, the mode switching operation switch 262 is switched to the normal mode, and the voice of the person via the external microphone 230 installed on the protrusion 124 of the microphone integrated earphone 120 to the other party. I can deliver it. In addition, the mode changeover switch 260 cuts off the power supplied to the signal detector 240 when operated in the normal mode. This is to reduce power consumption due to the operation of the signal detector 240, since the user's voice is not transmitted through the external microphone, because the howling and the echo by the internal microphone 220 are not considered.

Cell phone microphone and speaker integrated earphones as described above can be delivered to the user's mouth in the area where the noise is relatively low in the area where the noise is generated from the user's ear in the noisy area by operating the mode switching switch. The message can be delivered with the correct voice.

As described above, the sound input / output device and the microphone integrated earphone according to the present invention perform a one-way communication, so the circuit is simple to implement. Not only can you do this, but you can also send a clearer message to the other party depending on the situation.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the general knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Anyone with a variety of variations will be possible.

Claims (8)

A speaker for converting the transmitted electrical signal into a sound and outputting the sound; A first microphone installed integrally with the speaker and converting the generated sound into an electrical signal; A second microphone for converting the generated sound into an electrical signal; And And a mode change switch for selectively connecting the first microphone and the second microphone to a voice input terminal by a user's operation. The method of claim 1, A signal detector for outputting an interruption signal for interrupting an electrical signal generated from the first microphone when an electrical signal transmitted to the speaker is detected; And And a switching element which opens and closes so that an electrical signal generated from the first microphone can be switched according to an intermittent signal output from the signal detection unit. The method of claim 2, And the mode change switch is configured to cut off power supplied to the signal detection unit when the mode switching switch is operated to receive sound from the second microphone. A connector for electrically connecting with the main unit; A speaker which is installed inside the body having an exterior shape so that a part can be inserted into a user's ear, and converts the electrical signal transmitted from the main device through the connector into sound; A first microphone installed inside the body and converting a sound generated from a user's ear into an electrical signal and outputting the sound to the main device through the connector; A second microphone which converts the generated sound into an electrical signal and outputs the electrical signal to the main device; And And a mode change switch for selectively connecting the first microphone and the second microphone to the voice output terminal of the connector by a user's operation. The method of claim 4, wherein A signal detector for outputting an interruption signal for interrupting an electrical signal transmitted from the first microphone to the connector when the electrical signal transmitted from the connector is detected; And And a switching element connected between the first microphone and the connector, the switching element being opened and closed according to an intermittent signal output from the signal detection unit. The method of claim 5, The mode switching switch is a microphone and speaker integrated earphone, characterized in that when the operation to receive the sound through the second microphone, cut off the power supplied to the signal detector. The method of claim 4, wherein The second microphone is a microphone and speaker integrated earphone, characterized in that formed integrally with the main body facing the ear insertion portion of the main body. The method of claim 7, wherein The microphone and speaker integrated earphone, characterized in that the second microphone is a directional microphone.