KR100877269B1 - Speaker-receiver-mike all-in-one system and mobile communication terminal by using it and speaker-receiver-mike mode switching scheme - Google Patents

Abstract

The present invention relates to a speaker-receiver-microphone integrated device and a mode switching method of a mobile communication terminal and a mobile communication terminal using the same, comprising: a first speaker-receiver-microphone integrated device having an upper diaphragm provided on an upper side thereof, and a lower one side A second speaker-receiver-microphone integrated device having a lower diaphragm provided in the apparatus, wherein the speaker-receiver-microphone integrated device of any of the first or second speaker-receiver-microphone integrated device is provided when the mobile communication terminal is in a telephone call state. Is used as a receiver or not, and when the speaker-receiver-microphone integrated device is used as a receiver, it is determined whether the up / down position of the mobile communication terminal is changed. If changed, reverse using the upper diaphragm as a microphone and the lower diaphragm as a receiver If the mode of the mobile communication terminal is switched to the mode, and the up / down position of the mobile communication terminal is not changed, the mode of the mobile communication terminal is changed to the normal mode using the lower diaphragm as the microphone and the upper diaphragm as the receiver. When the speaker-receiver-microphone integrated device is not used as a receiver, the mode of the mobile communication terminal is changed to the speaker call mode, and the mobile terminal is determined to be in the voice recording state when the mobile communication terminal is not in the telephone call state. And switching the mode of the mobile communication terminal to the recording mode. According to the present invention, by using a single diaphragm in the mobile communication terminal to selectively switch the speaker, receiver, microphone mode, it is possible to reduce the size of the mobile communication terminal and reduce the manufacturing cost of the terminal. In addition, by configuring a speaker-receiver-microphone integrated device according to the present invention in a dual (due), it is possible to make calls even when changing the up / down direction of the mobile communication terminal, and stereo sound recording (Stereo Voice Recording) function and By supporting stereo loudspeaker (external speaker) function when playing music / movie, user convenience and user satisfaction can be greatly improved.

Receiver, speaker, microphone, mobile communication terminal, integrated

Description

Speaker-receiver-microphone integrated device and mode switching method of mobile communication terminal and mobile communication terminal using same.

1 is a circuit diagram of a speaker integrated receiver applied to a conventional mobile communication terminal,

Figure 2a is an exemplary sound source generation of the speaker-receiver-microphone integrated device according to the present invention,

Figure 2b is an illustration of the sound source application of the speaker-receiver-microphone integrated device according to the present invention,

3 is an exemplary configuration diagram of a mobile communication terminal to which a speaker- receiver integrated microphone device is applied according to a preferred embodiment of the present invention;

4 is a flowchart illustrating a speaker-receiver-microphone mode switching process implemented in the mobile communication terminal of FIG. 3.

<Description of the code | symbol about the principal part of drawing>

200: receiver terminal 202: speaker terminal

204: microphone terminal 300: upper diaphragm

302: first connection portion 400: lower diaphragm

402: second connection portion 500: control unit

600: data processing unit

The present invention relates to a mobile communication terminal, and more particularly, to a speaker-receiver-microphone integrated device suitable for miniaturization of a mobile communication terminal and a mode switching method of a mobile communication terminal and a mobile communication terminal using the same.

Since the original purpose of the mobile device was voice communication between two distant individuals, only a receiver that was in close contact with the human ear and produced a relatively low sound pressure was supported. There was no need for a speaker to generate sound pressure.

However, in recent years, mobile communication terminals have converged with various functions, and as the capacity of the terminal's internal and external flash memory increases, music and video playback functions such as MP3 and AVI files, TV viewing, etc. It has begun to support and is now more than just a communication device, it is becoming a portable multimedia device.

It is inconvenient to use the receiver when making a voice call, even when no one is around, and consumers feel that a loudspeaker, or external speaker, is needed for multiple listening and viewing when using multimedia functions. .

As a result, receivers and loudspeakers began to be attached to the handset, but two diaphragms had to be built in, which hindered the miniaturization of the device.

As part of the conventional method for miniaturizing a receiver-speaker integrated mobile communication terminal, Korean Patent Application Publication No. 2003-0039926 and Korean Patent Application Publication No. 2005-0007681 share and add the diaphragm of a loudspeaker and a receiver. A method of outputting an appropriate sound pressure by adding an additional resistor is disclosed, as shown in FIG.

FIG. 1 is characterized in that the receiver 100 and the loudspeaker 102 are used in one diaphragm for miniaturization of a portable terminal. In the speaker mode, the electric signal only generates impedance due to the impedance of the voice coil L connected to the diaphragm. However, in the receiver mode, the impedance of the resistor R and the impedance of the voice coil L are changed. As all pass, low sound pressure is generated.

However, the receiver-speaker integrated mobile communication terminal of FIG. 1 basically does not have a microphone function, and an additional diaphragm is required for the microphone function.

Meanwhile, as consumers' desire for an external speaker that provides better sound quality has increased, a product equipped with two speakers has been introduced to support a stereo type rather than a conventional mono type. This is disclosed in Korean Patent Application Publication No. 2007-0010717, which requires two loudspeakers separately from a receiver and a microphone to support a stereo type. That is, two speakers and one microphone should be mounted in the mobile communication terminal.

On the other hand, for a mobile communication terminal that can be used regardless of the top / bottom, a pair of speakers and a microphone is installed on the top and bottom of the terminal to use a total of two pairs of speakers and microphone technology, Korean Patent Application Publication No. 2004-0006749 It was proposed in the issue. In addition, the Republic of Korea Patent Application Publication No. 2005-0023718 provides a terminal function that can be used regardless of the top / bottom by using two microphone combined speakers, but the volume of this device will increase because the speaker combined with the microphone is composed of a speaker and a microphone There is no choice but to.

As such, although the number of speakers and microphones required for the mobile communication terminal is increasing to satisfy the consumer's desire for more functions, the increase in the number of internal components makes it difficult to miniaturize the mobile communication terminal. That is, the above methods improve the function of the terminal, but increase the terminal volume and cause the manufacturing cost to increase due to the use of additional components.

The present invention is to solve the above-mentioned problems of the prior art, a speaker-receiver-microphone integrated device that can reduce the size and manufacturing cost of a mobile communication terminal using a microphone as well as a receiver and a speaker through a single diaphragm and the same It is an object of the present invention to provide a mode switching method between a mobile communication terminal and a mobile communication terminal.

Another object of the present invention for solving the problems of the prior art, a speaker-receiver-microphone integrated device that can increase the ease of use by enabling a call even when changing the up / down direction of the mobile communication terminal with a single diaphragm and the same The present invention provides a mode switching method between a mobile communication terminal and a mobile communication terminal.

Another object of the present invention for solving the problems of the prior art, the speaker-receiver-microphone integrated device and the mobile communication terminal and mobile communication using the same that can increase the user satisfaction by enabling stereo recording and playback with a single diaphragm It is to provide a mode switching method of the terminal.

According to an embodiment for achieving the object of the present invention, a speaker-receiver-microphone integrated device comprising: a receiver terminal connected to one side of a resistor, a speaker terminal connected to a coil formed around a single diaphragm, and the other side of the resistor. Provided is a speaker-receiver-microphone integrated device including a connected microphone terminal and selectively applying a speaker mode, a receiver mode, and a microphone mode to the single diaphragm.

According to an aspect of another embodiment for achieving the object of the present invention, a mobile communication terminal, comprising a plurality of voice output terminals and a microphone terminal, converts a sound signal input from the outside into voice data, and is input from the inside A first speaker-receiver-microphone integrated device having a data processing unit for converting and outputting voice data into a sound signal, an upper diaphragm formed at one upper side of the mobile communication terminal, and a lower one side of the mobile communication terminal; The second speaker-receiver-microphone integrated device having a lower diaphragm, and the speaker, the receiver, and the microphone terminals of the first speaker-receiver-microphone integrated device may be connected to the first audio output terminal or the first microphone of the data processing unit. A first connection part selectively connected to any one of terminals, and the second speaker-receiver-my A second connection unit for selectively connecting any one of a speaker, a receiver, and a microphone terminal of the integrated device to any one of a second voice output terminal or a second microphone terminal of the data processor; and according to a current mode of the mobile communication terminal. A mobile communication terminal using a speaker-receiver-microphone integrated device comprising a control unit for selectively connecting the data processor and the first and second speaker-receiver-microphone integrated devices by switching and controlling the first and second connection units. To provide.

According to another aspect of another embodiment for achieving the object of the present invention, the first speaker-receiver-microphone integrated device having an upper diaphragm provided on one upper side, and the second speaker-receiver having a lower diaphragm provided on the lower one side A mode switching method of a mobile communication terminal including a microphone integrated device, wherein when the mobile communication terminal is in a telephone call, a receiver, a receiver, a microphone integrated device of the first or second speaker-receiver-microphone integrated device is used. Determining whether or not to use the device as a receiver; determining whether the upper / lower position of the mobile communication terminal has been changed when any speaker-receiver-microphone integrated device is used as a receiver; If the lower / lower position has been changed, use the upper diaphragm as a micro Switching the mode of the mobile communication terminal to a reverse mode used as a receiver; and a normal mode using the lower diaphragm as a microphone and using the upper diaphragm as a receiver if the position of the mobile communication terminal is not changed. Switching a mode of the mobile communication terminal to a mobile communication terminal; switching a mode of the mobile communication terminal to a speaker call mode when a speaker-receiver-microphone integrated device is not used as a receiver; Determines whether the voice recording state is not a phone call state, and if the voice recording state is a mode of a mobile communication terminal using a speaker-receiver-microphone integrated device, the method comprising switching a mode of the mobile communication terminal to a sound recording mode. Provide a switching method.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2A and 2B are diagrams illustrating sound source generation and sound source application of the speaker-receiver-microphone integrated device according to the present invention.

First, FIG. 2A is a diagram illustrating a sound source generation of the speaker-receiver-microphone integrated device according to the present invention, which is connected to a receiver terminal 200 connected to one side of a resistor R and a coil L formed around a diaphragm, not shown. A speaker terminal 202. The other terminal (another resistor R connection terminal), which is omitted from reference numerals, is a terminal used as a microphone in FIG. 2B.

Speakers and receivers apply the principle that when a conductor is in a magnetic field, the strength of the conductor varies in proportion to the magnitude of the current flowing in the conductor. That is, the magnitude of the force received by the voice coil varies according to the magnitude of the current flowing through the voice coil between the permanent magnets, and the magnitude of the force received by the diaphragm connected to the voice coil. As the diaphragm rotates, sound is generated.

This will be described with reference to FIG. 2A with reference to FIG.

In the receiver mode of FIG. 2A, the voltage is applied to both ends of the coil L through the receiver terminal 200, and the voltage applied to the coil L decreases due to the voltage drop generated in the resistor R and the diaphragm. Weak sound pressure is generated at and serves as a receiver.

On the other hand, in the speaker mode, the voltage is applied to both ends of the coil (L) through the speaker terminal 202, all the voltage is applied to the coil (L) to generate a large sound pressure in the diaphragm to act as a speaker.

On the other hand, Figure 2b is a diagram illustrating a sound source application of the speaker-receiver-microphone integrated device according to the present invention, and includes a microphone terminal 204 connected to the other side of the resistor (R). The remaining two terminals (another resistor (R) connection terminal and coil (L) connection terminal) where reference numerals are omitted are terminals used as receivers and speakers, respectively, in FIG. 2A.

In the case of the microphone, when the diaphragm vibrates by sound waves, and the coil connected to the diaphragm moves in the magnetic field, the magnitude of induced electromotive force generated at both ends of the coil is proportional to the speed at which the coil moves.

This will be described with reference to FIG. 2B.

In the microphone mode of FIG. 2B, when an external sound pressure vibrates the diaphragm, the induced electromotive force is applied to the microphone terminal 204 at both ends of the coil L as the coil L connected to the diaphragm moves in the magnetic field of the magnet. Is generated.

That is, in the structure of the receiver, the speaker and the structure of the microphone as described above, the positions of the coil (L), the resistor (R), the diaphragm, the magnet (not shown) are the same, and the source of the force driving the system ( The only difference is that the sources are electrical energy (in receiver or speaker mode) and voice energy (in microphone mode), respectively.

The present invention has the same structure in which the coil and the magnet are arranged in the receiver, the speaker, and the microphone, but the diaphragm used in the speaker is also used for the receiver and the microphone, thereby miniaturizing the volume of the mobile communication terminal. In general, in the case of a diaphragm used as a speaker, the frequency characteristics are optimized in the human hearing range, such as 20 Hz to 20,000 Hz, and in the case of the diaphragm used in a microphone, the frequency characteristics are optimized in the human voice range, such as 300 Hz to 3,400. Optimize at Hz. In addition, since the diaphragm is commonly used in all the cases of a speaker, a receiver, and a microphone, it is desirable to optimize the frequency characteristic in the wide human hearing range, that is, 20 Hz to 20,000 Hz. This frequency range may be a rather wide range in the case of the microphone mode in the speaker-receiver-microphone integrated device according to the present invention, but does not significantly affect the general voice call in the mobile communication terminal.

The speaker-receiver-microphone integrated device as described above is implemented to selectively apply the speaker mode, the receiver mode, and the microphone mode in a single diaphragm.

At this time, if the speaker-receiver-microphone integrated device is additionally installed in the mobile communication terminal, that is, if two speaker-receiver-microphone integrated devices are applied, the volume of the terminal may be increased by adding a separate microphone or speaker inside the mobile communication terminal. Various additional functions, such as changing the up / down position of the mobile communication terminal and recording and playback of a stereo / video source, may be implemented without increasing.

This will be described in more detail through the preferred embodiment of the present invention of FIGS. 3 and 4.

3 is an exemplary configuration diagram of a mobile communication terminal to which a speaker-receiver-microphone integrated device is applied according to a preferred embodiment of the present invention, and includes two speaker-receiver-microphone integrated devices (hereinafter referred to as dual speaker-). Receiver-microphone integrated device) shows an internal configuration of a composite mobile communication terminal.

As shown in FIG. 3, the dual speaker-receiver-microphone integrated device according to the preferred embodiment of the present invention includes an upper diaphragm 300, a first connection part 302, decoders 32 and 34, and first and second parts. A first speaker-receiver-microphone integrated device comprising a second, third and fourth three-terminal bi-direction switches 36, 37, 38, and 39, a lower diaphragm 400, and a second connecting portion ( 402, a second speaker-receiver-microphone integrated device composed of decoders 42 and 44, first, second, third and fourth bidirectional switches 46, 47, 48 and 49, And a data processing unit 600.

The dual speaker-receiver-microphone integrated device having such a configuration enables a call even when the mobile terminal is changed up and down, and has a stereo voice recording function and a stereo loudspeaker during music / movie playback. External speaker) function.

In order to further highlight this feature of the present invention, the drawings and reference numerals of FIG. 3 are substantially compared.

First, the upper diaphragm 300 is installed inside the upper portion (top) of the mobile communication terminal, and has a selective function in the speaker, receiver, microphone mode.

The first connecting portion 302 is connected to the upper diaphragm 300. Specifically, the upper diaphragm 300 is connected to the speaker (+) (-) terminal, the receiver (+) (-) terminal, the microphone (+) (-) terminal corresponding to the first connection portion 302, respectively.

The first connector 302 includes a first decoder 32, a second decoder 34, a bidirectional switch 36, 37, 38, 39, and the first decoder 32 and the second decoder 34 are The bidirectional switches 36, 37, 38, and 39 are connected to the Left_Mike_On line 56 of the controller 500, respectively, to the Mux_Left line 52 of the controller 500, which will be described later.

The second connecting portion 402 is connected to the lower diaphragm 400. Specifically, the lower diaphragm 400 is connected to the speaker (+) (-) terminal, the receiver (+) (-) terminal, the microphone (+) (-) terminal corresponding to the second connection portion 402, respectively.

The second connector 202 includes a first decoder 42, a second decoder 44, and a bidirectional switch 46, 47, 48, 49, and the first decoder 42 and the second decoder 44 The bidirectional switches 46, 47, 48, and 49 are connected to the Right_Mike_On line 58 of the controller 500, respectively, to the Mux_Right line 54 of the controller 500, which will be described later.

The controller 500 uses the control signals through the Mux_Left line 52, the Mux_Right line 54, the Left_Mike_On line 56, and the Right_Mike_On line 58 to determine the first and second decoders of the first connection unit 302 (the first and second decoders 302). 32, 34, the first and second decoders 42, 44 of the second connector 402, and the bidirectional switches 36, 37, 38, 39, 46, of the first and second connector 302, 402, 47, 48, 49, and ultimately serves to determine in which mode the two integrated speaker-receiver-mics, i.e., the upper diaphragm 300 and the lower diaphragm 400, are used.

In this case, the first and second decoders 32 and 34 of the first connection unit 302 may have a voice output terminal of the data processor 600, for example, a Left_Sound terminal, when the logic value of the control signal of the Mux_Left line 52 is '1'. The electrical signals output from 602 and 606 are connected to the speaker terminals of the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal, and the control signal logic value of the Mux_Left line 52 is '0'. The electrical signal output from the Left_Sound terminals 602 and 606 of the data processing unit 600 is connected to the receiver terminal of the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal.

In addition, the first and second decoders 42 and 44 of the second connection unit 402 may have a voice output terminal of the data processing unit 600, for example, a Right_Sound terminal, if the control signal logic value of the Mux_Right line 54 is '1'. The electrical signals output from the 610 and 614 are connected to the speaker terminals of the lower diaphragm 400 of the speaker-receiver-microphone integrated device installed below the mobile communication terminal, and the control signal logic value of the Mux_Right line 54 is '0'. The electrical signal output from the Right_Sound terminals 610 and 614 of the data processing unit 600 is connected to the receiver terminal of the lower diaphragm 400 of the speaker-receiver-microphone integrated device installed under the mobile communication terminal.

The first and second bidirectional switches 36 and 37 of the first connector 302 and the first and second bidirectional switches 46 and 47 of the second connector 402 are control signal logic input from the controller 500. If the value is '1', the positive terminal is connected (short). If the value is '0', the positive terminal is disconnected (high impedance).

The third and fourth bidirectional switches 38 and 39 of the first connector 302 and the third and fourth bidirectional switches 48 and 49 of the second connector 402 are control signal logic input from the controller 500. If the value is '0', the positive terminal is connected (short), and if the value is '0', the positive terminal is disconnected (high impedance).

In addition, when the control signal logic value of the Left_Mike_On line 56 from the controller 500 is '1', the speaker terminal of the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal is connected to the first connection part. The first and second bidirectional switches 36 and 37 of 302 are connected to the microphone terminals of the data processor 600, for example, Left_Mike terminals 604 and 608.

When the control signal logic value of the Left_Mike_On line 56 from the controller 500 is '0', the first and second decoders 32 and 34 of the first connector 302 installed above the mobile communication terminal are connected to the first connector. The third and fourth bidirectional switches 38 and 39 of 302 are connected to voice output terminals of the data processor 600, for example, Left_Sound terminals 602 and 606.

In addition, when the control signal logic value of the Right_Mike_On line 58 from the controller 500 is '1', the speaker terminal of the lower diaphragm 400 of the speaker-receiver-microphone integrated device installed below the mobile communication terminal is connected to the second connection part. The first and second bidirectional switches 46 and 47 of 402 are connected to the microphone terminals of the data processor 600, for example, Right_Mike terminals 612 and 616.

When the control signal logic value of the Right_Mike_On line 56 from the control unit 500 is '0', the first and second decoders 42 and 44 of the second connection unit 402 installed below the mobile communication terminal are connected to the second connection unit. The third and fourth bidirectional switches 48 and 49 of 402 are connected to voice output terminals of the data processor 600, for example, Right_Sound terminals 610 and 614.

Meanwhile, the first connector 302 is a part including the first and second decoders 32 and 34, the first, second, third and fourth bidirectional switches 36, 37, 38, and 39. -Connect between the upper diaphragm 300 and the data processing unit 600 of the receiver-microphone integrated device.

The second connector 402 is a part including the first and second decoders 42 and 44, the first, second, third and fourth bidirectional switches 46, 47, 48 and 49, and the speaker-receiver. -Connect between the lower diaphragm 400 and the data processing unit 600 of the microphone integrated device.

When the data processing unit 600 outputs mono information such as a voice call, the same electrical signal is generated at the Left_Sound terminals 602 and 606 and the Right_Sound terminals 610 and 614, such as sound information of music or video. When outputting stereo information, different electrical signals are generated at the Left_Sound terminals 602 and 606 and the Right_Sound terminals 610 and 614. That is, the data processing unit 600 converts a sound signal input from an external input terminal into voice data, converts the voice data input from the inside into a sound signal, and outputs the sound signal to the output terminal.

In the embodiment of the present invention as described above, by configuring the speaker-receiver-microphone integrated device in dual, it is possible to make calls even when changing the up / down direction of the mobile communication terminal, stereo sound recording function (Stereo Voice Recording) function and It is implemented to support stereo loudspeaker (external speaker) function when playing music / movie.

Hereinafter, the mode switching process of the dual speaker-receiver-microphone integrated device according to the present invention together with the above-described configuration will be described in detail with reference to the flowchart of FIG. 4.

As shown in FIG. 4, the control unit 500 determines whether the mobile communication terminal is in a telephone call state in step S400. Such call status determination may be determined depending on, for example, whether a mobile communication terminal is connected to a call.

As a result of the determination in step S400, if the mobile communication terminal is in the phone call state, the control unit 500 proceeds to step S402, and if not in the phone call state, proceeds to step S412.

In step S402, the control unit 500 determines whether to use any speaker-receiver-microphone integrated device as a receiver among the first or second speaker-receiver-microphone integrated device to output the received voice information. The use of such a receiver may be determined by the user's selection to determine whether the mobile communication terminal is a general call mode or a speaker call mode, and this fact is easily understood by those skilled in the art. As can be, a detailed description thereof will be omitted.

On the other hand, if it is determined in step S402 that the speaker-receiver-microphone integrated device is to be used as a receiver, the control unit 500 proceeds to step S404, and if it is determined that the receiver is not to be used in step S410 Proceed to).

In step S404, the control unit 500 determines whether the up / down position of the mobile communication terminal is changed, and if the up / down position of the mobile communication terminal is changed, the process proceeds to step S406. Proceed to S408). Checking whether the mobile terminal has an up / down position change may be implemented by applying a technology for recognizing a change in the position of the first mobile communication terminal, for example, a location recognition technology using an acceleration sensor.

On the other hand, step (S406) refers to a state that is switched to the "reverse mode", using the upper diaphragm 300 of the mobile communication terminal as a microphone and the lower diaphragm 400 as a receiver. In reverse mode, the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal is connected to the Left_Mike terminals 604 and 608 of the data processing unit 600 and used as a microphone, and the speaker installed below the mobile communication terminal. The lower diaphragm 400 of the receiver-microphone integrated device is connected to the Right_Sound terminals 610 and 614 of the data processor 600 to be used as a receiver.

In the reverse mode, the control unit 500 outputs a control signal as shown in Table 1 below.

TABLE 1

Mux_left Left_Mike_On Mux_right Right_Mike_On X (do not care) One 0 0

On the other hand, if it is determined in step S404 that the top / bottom position of the mobile communication terminal is not changed, the control unit 500 proceeds to step S408 to switch the mobile communication terminal to the 'normal mode'. In the normal mode, the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal is connected to the Left_Sound terminals 602 and 606 of the data processing unit 600 and used as a receiver. The lower diaphragm 400 of the speaker-receiver-microphone integrated device is connected to the Right_Mike terminals 612 and 616 of the data processor 600 to be used as a microphone.

In the normal mode, the control unit 500 outputs a control signal as shown in Table 2 below.

TABLE 2

Mux_left Left_Mike_On Mux_right Right_Mike_On 0 0 X (do not care) One

On the other hand, step S410 shows a state switched to the 'speaker call mode'. The speaker call mode is used as a speaker to output the received voice by connecting the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal to the Left_Sound terminals 602 and 606 of the data processing unit 600. By connecting the lower diaphragm 400 of the speaker-receiver-microphone integrated device installed below the mobile communication terminal to the Right_Mike terminals 612 and 616 of the data processing unit 600, the microphone converts the voice of the terminal user into an electrical signal. Means that.

In the speaker call mode, the control unit 500 outputs a control signal as shown in Table 3 below.

TABLE 3

Mux_left Left_Mike_On Mux_right Right_Mike_On One 0 X (do not care) One

On the other hand, in step S412, the control unit 500 determines whether the current mobile communication terminal is in the sound recording state, and if the sound recording state proceeds to step S414, otherwise proceeds to step S416.

In step S414, the control unit 500 switches the mode of the mobile communication terminal to the 'sound recording mode'. The sound recording mode is connected to the left diaphragm terminal 604 and 608 of the data processing unit 600 by connecting the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal to the stereo left micro. And a lower diaphragm 400 of the speaker-receiver-microphone integrated device installed below the mobile communication terminal to the Right_Mike terminals 612 and 616 of the data processing unit 600 to use a stereo right microphone. do.

In the sound recording mode, the control unit 500 outputs a control signal as shown in Table 4 below.

TABLE 4

Mux_left Left_Mike_On Mux_right Right_Mike_On X (do not care) One X (do not care) One

The sound recording mode is used for voice recording or video recording provided by a mobile communication terminal, and has an advantage in that sound source information can be stored in a stereo type instead of a conventional mono type without adding an additional diaphragm.

In step S416, the mode of the mobile communication terminal is switched to the 'music reproduction mode'. The music playback mode is used as a stereo left speaker by connecting the upper diaphragm 300 of the speaker-receiver-microphone integrated device installed above the mobile communication terminal to the Left_Sound terminals 602 and 606 of the data processor 600. The lower diaphragm 400 of the speaker-receiver-microphone integrated device installed below the mobile communication terminal is connected to the Right_Sound terminals 610 and 614 of the data processing unit 600 to be used as a stereo right speaker. do.

In the music playback mode, the control unit 500 outputs a control signal as shown in Table 5 below.

TABLE 5

Mux_left Left_Mike_On Mux_right Right_Mike_On One 0 One 0

The music play mode has an advantage of supporting stereo loudspeakers (external speakers) without adding a diaphragm when playing music or playing a video.

As described above, the present invention is implemented to selectively switch the speaker, receiver, microphone mode using one diaphragm in the mobile communication terminal.

Meanwhile, the present invention is not limited to the above-described embodiments, but various modifications are possible by those skilled in the art within the technical spirit and scope of the present invention described in the claims below.

According to the present invention, by using a single diaphragm in the mobile communication terminal to selectively switch the speaker, receiver, microphone mode, it is possible to reduce the size of the mobile communication terminal and reduce the manufacturing cost of the terminal.

In addition, by configuring a speaker-receiver-microphone integrated device according to the present invention in a dual (due), it is possible to make calls even when changing the up / down direction of the mobile communication terminal, and stereo sound recording (Stereo Voice Recording) function and By supporting stereo loudspeaker (external speaker) function when playing music / movie, user convenience and user satisfaction can be greatly improved.

Claims (22)

A speaker-receiver-microphone integrated device, A receiver terminal connected to one side of a resistor, Speaker terminals connected to coils formed around a single diaphragm, It includes a microphone terminal connected to the other side of the resistor, And a speaker-receiver-microphone integrated device for selectively applying speaker mode, receiver mode, and microphone mode in parallel with the single diaphragm. The method of claim 1, In the receiver mode, a voltage is applied across the coil through the receiver terminal, the voltage applied to the coil is reduced due to the voltage drop generated in the resistance, speaker-receiver-microphone integrated device. The method of claim 1, In the speaker mode, a speaker-receiver-microphone integrated device is characterized in that a voltage is applied to both ends of the coil through the speaker terminal and all voltages are applied to the coil. The method of claim 1, In the microphone mode, a speaker-receiver characterized in that an induced electromotive force is generated at microphone terminals at both ends of the coil as an external sound pressure vibrates the diaphragm so that a coil formed around the diaphragm moves in a magnetic field of a magnet. -Microphone integrated device. The method of claim 1, The frequency characteristic of the diaphragm, the speaker-receiver-microphone integrated device, characterized in that 20Hz ~ 20,000Hz. As a mobile communication terminal, A data processing unit having a plurality of voice output terminals and a microphone terminal, converting a sound signal input from the outside into voice data, converting the voice data input from the inside into a sound signal, and outputting the sound signal; A first speaker-receiver-microphone integrated device having an upper diaphragm formed on an upper side of the mobile communication terminal; A second speaker-receiver-microphone integrated device having a lower diaphragm formed at one lower side of the mobile communication terminal; A first connection unit for selectively connecting any one of a speaker, a receiver, and a microphone terminal of the first speaker-receiver-microphone integrated device to any one of a first audio output terminal or a first microphone terminal of the data processor; A second connection unit for selectively connecting any one of a speaker, a receiver, and a microphone terminal of the second speaker-receiver-microphone integrated device to any one of a second audio output terminal or a second microphone terminal of the data processor; A control unit for selectively connecting the data processing unit and the first and second speaker-receiver-microphone integrated devices by switching and controlling the first connection unit and the second connection unit according to a current mode of the mobile communication terminal. Mobile communication terminal using a speaker-receiver-microphone integrated device comprising a. The method of claim 6, The data processor may generate the same electrical signal at the first and second audio output terminals when the mono information is output, and generate different electrical signals at the first and second audio output terminals when the stereo information is output. Mobile communication terminal using a speaker-receiver-microphone integrated device. The method of claim 7, wherein The first and second audio output terminals are left and right audio output terminals, and the first and second microphone terminals are left and right microphone terminals, wherein the speaker-receiver-microphone integrated device is used. . The method of claim 6, The first connection portion, A first decoder to which the upper diaphragm is connected to the Mux_Left line of the control unit through a positive terminal of the speaker, receiver, and microphone of the first speaker-receiver-microphone integrated device; A second decoder to which the upper diaphragm and the Mux_Left line of the controller are connected through the negative terminal of the speaker, receiver and microphone of the first speaker- receiver integrated microphone; A plurality of bidirectional switches connected to the first and second decoders and the Left_Mike_On line of the controller; Mobile communication terminal using a speaker-receiver-microphone integrated device comprising a. The method of claim 6, The second connection portion, A first decoder to which the lower diaphragm and the Mux_Right line of the controller are connected through a speaker, a receiver and a microphone of the second speaker-receiver-microphone integrated device; A second decoder to which the lower diaphragm and the Mux_Right line of the controller are connected through a negative terminal of the speaker, the receiver, and the microphone of the second speaker-receiver-microphone integrated device; A plurality of bidirectional switches connected to the first and second decoders and the Right_Mike_On line of the controller; Mobile communication terminal using a speaker-receiver-microphone integrated device comprising a. The method according to claim 9 or 10, The first and second connection portion, One of the (+) and (-) terminals of the speaker, the receiver and the microphone of the first and the second speaker-receiver-microphone integrated device may be a plurality of audio output terminals or a plurality of microphone terminals of the data processor. When connected to any one of these, the remaining terminals of the first and second speaker-receiver-microphone integrated device are disconnected from the data processing unit, the mobile communication terminal using a speaker-receiver-microphone integrated device . The method of claim 11, The first decoder of the first connection portion, When the control signal logic value of the Mux_Left line of the controller is '1', the electrical signal output from the first audio output terminal of the data processor is connected to the speaker (+) terminal of the upper diaphragm, and the control of the Mux_Left line of the controller is performed. When the signal logic value is '0', the mobile communication using the speaker-receiver-microphone integrated device connects the electrical signal output from the first voice output terminal of the data processor to the receiver (+) terminal of the upper diaphragm. terminal. The method of claim 11, The second decoder of the first connection portion, If the control signal logic value of the Mux_Left line of the controller is '1', the electrical signal output from the first audio output terminal of the data processor is connected to the speaker (-) terminal of the upper diaphragm, and the control of the Mux_Left line of the controller is performed. When the signal logic value is '0', the mobile communication using the speaker-receiver-microphone integrated device connects the electrical signal output from the first voice output terminal of the data processor to the receiver (-) terminal of the upper diaphragm. terminal. The method of claim 11, The first decoder of the second connection portion, If the control signal logic value of the Mux_Right line of the controller is '1', the electrical signal output from the second voice output terminal of the data processor is connected to the speaker (+) terminal of the lower diaphragm, and the control of the Mux_Right line of the controller is performed. When the signal logic value is '0', the mobile communication using the speaker-receiver-microphone integrated device connects the electrical signal output from the second voice output terminal of the data processor to the receiver (+) terminal of the lower diaphragm. terminal. The method of claim 11, The second decoder of the second connection portion, If the control signal logic value of the Mux_Right line of the controller is '1', the electrical signal output from the second voice output terminal of the data processor is connected to the speaker (-) terminal of the lower diaphragm, and the control of the Mux_Right line of the controller is performed. When the signal logic value is '0', the electric signal output from the second audio output terminal of the data processor is connected to the receiver (-) terminal of the lower vibration plate. Communication terminal. A mode switching method of a mobile communication terminal comprising a first speaker-receiver-microphone integrated device having an upper diaphragm provided on one upper side, and a second speaker-receiver-microphone integrated device having a lower diaphragm provided on the lower one side, Determining whether to use one of the first or second speaker-receiver-microphone integrated devices as a receiver when the mobile communication terminal is in a telephone call state; Determining whether the upper / lower position of the mobile communication terminal is changed when one of the first or second speaker-receiver-microphone integrated devices is used as a receiver; Switching the mode of the mobile communication terminal to a reverse mode using the upper diaphragm as a microphone and using the lower diaphragm as a receiver when an up / down position of the mobile communication terminal is changed; Switching the mode of the mobile communication terminal to a normal mode using the lower diaphragm as a microphone and using the upper diaphragm as a receiver if the up / down position of the mobile communication terminal is not changed; Switching a mode of the mobile communication terminal to a speaker call mode when a speaker-receiver-microphone integrated device is not used as a receiver; Determining whether the mobile communication terminal is in a voice recording state when the mobile communication terminal is not in a phone call state, and switching the mode of the mobile communication terminal to a sound recording mode in the voice recording state. Mode switching method of a mobile communication terminal using a speaker-receiver-microphone integrated device comprising a. The method of claim 16, The reverse mode, Connecting the upper diaphragm to the left microphone terminal to use the microphone, and connecting the lower diaphragm to the right audio output terminal to use as a receiver. The method of claim 16, The normal mode, And connecting the upper diaphragm to a left voice output terminal to use as a receiver, and connecting the lower diaphragm to a right microphone terminal to use a microphone, wherein the speaker-receiver-microphone integrated device uses a mode switching method. The method of claim 16, The speaker call mode, A speaker that connects the upper diaphragm to a left voice output terminal and outputs the received voice, and connects the lower diaphragm to a right microphone terminal to use a microphone to convert a voice of a terminal user into an electrical signal. -Mode switching method of mobile communication terminal using receiver-microphone integrated device. The method of claim 16, The sound recording mode, Mode switching of a mobile communication terminal using a speaker-receiver-microphone integrated device, wherein the upper diaphragm is connected to a left microphone terminal to use a stereo left microphone, and the lower diaphragm is connected to a right microphone terminal to use a stereo right microphone. Way. The method of claim 16, And switching the mode of the mobile communication terminal to a music reproduction mode when the mobile communication terminal is not in a sound recording state. The method of claim 21, The music play mode, Mobile communication using the speaker-receiver-microphone integrated device, wherein the upper diaphragm is connected to the left audio output terminal and used as a stereo left speaker, and the lower diaphragm is connected to the right audio output terminal and used as a stereo right speaker. Mode switching method of the terminal.

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