KR100563729B1 - A Potable Electronic Machine Having Two Mode Speaker - Google Patents

Abstract

The present invention relates to a portable electronic device having a two mode speaker. The portable electronic device of the present invention comprises: a first equivalent circuit having a first speaker output and a second speaker output which are different speaker outputs, and having a resistance value equivalent to a resistance value for the first speaker output; A second equivalent circuit installed to be connected to the first equivalent circuit and having a resistance value equivalent to a resistance value for outputting a second speaker in a state connected to the first equivalent circuit; And switching means for selectively energizing the second equivalent circuit to the first equivalent circuit to enable selective mode switching to the first speaker output and the second speaker output.

Bidirectional, 2 modes, speaker, equivalent resistance, equivalent circuit

Description

Portable Electronic Machine Having Two Mode Speaker

1 is a schematic diagram illustrating a configuration of a general bidirectional speaker.

2 is a circuit diagram illustrating an equivalent circuit of a typical loudspeaker.

3 is a circuit diagram illustrating an equivalent circuit of a general ear speaker.

4 is a circuit diagram illustrating a configuration of a preferred embodiment of a portable electronic device having a two mode speaker according to the present invention.

5 is a schematic diagram illustrating a two mode speaker of an embodiment according to the present invention;

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

19 ............... Portable electronics 20 ......... 1 equivalent circuit

21 .......... 1st power supply line 30 .......... 2nd equivalent circuit

31 .......... Second energization line

The present invention relates to a portable electronic device, and more particularly, to a portable electronic device having two-mode speakers having different output characteristics in the same speaker by selectively controlling the mode of the speaker output.

1 is a schematic diagram of a conventional bidirectional speaker, and FIGS. 2 and 3 are circuit diagrams illustrating an equivalent circuit of a loudspeaker and an equivalent circuit of an ear speaker, respectively.

As shown, the conventional bidirectional speaker 10 is a shape in which the loudspeaker 11 and the ear speaker 13 are pasted to face each other. The loudspeaker 11 and the ear speaker 13 of the bidirectional speaker 10 are provided with separate equivalent circuits, respectively, and sound signals and power are supplied through separate conduction lines 15 and 17.

Referring to the equivalent circuit of the loudspeaker 11 of FIG. 2, the equivalent loudspeakers 11b and 11b` are connected in series to both sides of the equivalent inductance 11a having an equivalent resistance value of approximately 0 ohm so that the entire loudspeaker is connected in series. The equivalent resistance value of (11) is 8 ohms.

Referring to the equivalent circuit of the ear speaker 13 of FIG. 3, the equivalent resistances 13b and 13b ′ of each 16 ohm are connected in series to both sides of the equivalent inductance 13a having an equivalent resistance value of approximately 0 ohms. The equivalent resistance of the speaker 13 is 32 ohms.

In the illustrated bidirectional speaker 10, power and a sound signal are supplied to an equivalent circuit of the loudspeaker 11 through the first conducting line 15 in the case of a ring tone or the like according to the output mode of the speaker. The power and sound signals are supplied to the ear speaker 13 through the second conduction line 17.

However, the following problems have arisen in the bidirectional speaker of the conventional portable electronic device having the configuration as described above.

Since the bidirectional speaker 10 is formed by pasting a separate unidirectional speaker having a resistance characteristic for the output of the loudspeaker 11 and a resistance characteristic for the output of the ear speaker 13, the speaker is thickened.

Since the two-way speaker 10 differs from each other in the direction of sound radiation according to the mode of the speaker, the speaker hole should also be formed at a corresponding position. Such factors act as mechanical limitations and affect the appearance of portable electronic devices.

SUMMARY OF THE INVENTION An object of the present invention is to implement a portable electronic device having a two-mode speaker that is provided with both resistance characteristics for two speaker outputs in one speaker, and selectively operable in different output modes.

A portable electronic device having a two-mode speaker according to the present invention for achieving the above object is a portable electronic device having a first speaker output and a second speaker output which are different speaker outputs, and a resistance value for the first speaker output. A first equivalent circuit having an equivalent resistance value; A second equivalent circuit installed so as to be connected to the first equivalent circuit, and having a total resistance value including the first equivalent circuit in a state of being connected to the first equivalent circuit so as to be equivalent to a resistance value for the second speaker output; ; And switching means for selectively energizing the second equivalent circuit to the first equivalent circuit to enable selective mode switching to the first speaker output and the second speaker output.

The first speaker output corresponds to the output of the loudspeaker, the second speaker output is characterized in that corresponding to the output of the ear speaker.

When the second equivalent circuit is turned off, the sound source signal is transmitted from the first conduction line connected to both ends of the first equivalent circuit, and when the second equivalent circuit is on, the second connected circuit is connected to both ends of the second equivalent circuit. 2 is characterized in that the sound source signal is transmitted from the power supply line.

The speaker hole for the two-mode speaker is characterized in that formed in a single direction.

The switching means is characterized in that it comprises an external switch external to the housing of the portable electronic device.

The switching means includes an automatic mode switching means for automatically performing a selective mode switching to the first speaker output and the second speaker output according to the nature of the sound source transmitted to the portable electronic device.

According to the above configuration, the output corresponding to the first speaker output and the output corresponding to the second speaker output can be selectively obtained by one speaker in a single direction.

Next, a configuration of an embodiment of a portable electronic device having a two-mode speaker according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

4 is a circuit diagram illustrating an internal equivalent circuit of the speaker of the portable electronic apparatus according to the present embodiment, and FIG. 5 is a schematic diagram illustrating the configuration of a two-mode speaker in this embodiment.

As shown in Figs. 4 and 5, the equivalent circuit built into the two-mode speaker 19 of the present embodiment has a first equivalent to enable operation in two modes of the first speaker output and the second speaker output. The circuit 20 and the second equivalent circuit 30 are formed in a connected structure.

The first speaker output of this embodiment has an output corresponding to the output of the loudspeaker of the mobile phone, and the second speaker output has a speaker output corresponding to the output of the ear speaker of the mobile phone.

The first equivalent circuit 20 of the present embodiment has an equivalent inductance value and an equivalent inductance value corresponding to the output of the first speaker, that is, the loudspeaker of the mobile phone, and the first equivalent circuit 20 is connected to the first equivalent circuit 20 at both ends thereof. The first conduction line 21 for transmission is connected.

The second equivalent circuit 30 is connected to both sides of the first equivalent circuit 21 of the present embodiment, and the entire equivalent circuit in the state in which the first equivalent circuit 21 and the second equivalent circuit 30 are connected to each other is provided. 2 speaker output, that is, the equivalent resistance value and the equivalent inductance value corresponding to the ear speaker output of the mobile phone.

In FIG. 4, the first equivalent circuit 20 and the second equivalent circuit 30 are connected in series, but this is merely illustrative, and it is apparent that various types of connection structures are possible according to the embodiment.

  In addition, a second conduction line 31 for connecting the sound source signal of the ear speaker is connected to both ends of the entire circuit to which the first equivalent circuit 20 and the second equivalent circuit 30 are connected.

In the second mode speaker 19 of the present embodiment, the second equivalent circuit 30 is selectively energized so that the second mode speaker 19 of the present embodiment can be operated by either a loudspeaker or an ear speaker. Switching means (not shown) are provided.

The switching means of this embodiment is connected to the first conduction line 21 and the second conduction line 31 to enable selective control of the speaker mode.

In addition, the switching means of the present embodiment includes an external switch (not shown) mounted on one side of the mobile phone housing so that the user can use the mobile phone in a specific speaker mode.

In addition, the switching means of the present embodiment includes an automatic mode switching means (not shown) that enables the automatic mode switching to one of the loudspeaker and the ear speaker according to the nature of the sound source.

In this embodiment, since the equivalent circuit inside the two-mode speaker 19 can be selectively operated as a loudspeaker or an ear speaker, the two-mode speaker 19 of the present embodiment can be made of a unidirectional speaker. . In this case, the speaker hole can perform its function with only one speaker hole for the first speaker output and the second speaker output.

4 and 5, the circuit structure inside the two-mode speaker 19 of the present embodiment is connected to the first equivalent circuit 20 and the second equivalent circuit 30 in series, and the first equivalent circuit 20 The equivalent resistance for the output is 8 ohm, and the equivalent resistances 25 and 25 'of 4 ohms are connected in series on both sides of the equivalent inductance 23 of approximately 0 ohm.

A second equivalent circuit 30 is connected in series at both ends of the first equivalent circuit 20, and 12 ohms of equivalent resistors 33 and 33 ′ are connected to both sides of the first equivalent circuit 20, respectively. Equivalent inductances 35 and 35 'of approximately 0 ohm are connected to the equivalent resistors 33 and 33' of the second equivalent circuit 30, respectively.

The first conduction line 21 is connected to both nodes of the first equivalent circuit 20 and the second equivalent circuit 30, and the second conduction line 31 is connected to both ends of the second equivalent circuit 30. ) Is connected to supply sound signal and power.

The speaker of this embodiment is a unidirectional speaker, and the speaker output mode is determined according to the energized state of the first and second equivalent circuits 20 and 30 and the supplied sound signal.

The following describes the operation of the two-mode speaker with a two-mode speaker of the present invention having the configuration as described above.

When the user keeps in the standby state without using the mobile phone, the automatic mode selection means automatically switches the mode of the two-mode speaker 19 to the mode of the loudspeaker. In this case, the two-mode speaker 19 operates at a resistance of 8 ohms, which is the equivalent resistance of the loudspeaker.

In this case, in the first equivalent circuit 20 of FIG. 4, the energization state is maintained by the first energization line 21 at both ends thereof, and when a call connection signal is received from the mobile phone of the other party, the ring tone of the specific mode stored is first equivalent. It is generated through the circuit 20.

The user of the mobile phone who has received the call connection signal can select whether to use the 2-mode speaker or loudspeaker mode during the call by operating the external switch. Done.

In this case, when the user does not select a specific speaker mode by operating the external switch, the automatic mode selection means switches the two-mode speaker to the ear speaker mode at the start of the call.

When the two-mode speaker 19 of the mobile phone operates in the ear speaker mode, the speaker output generates a total resistance of 36 ohms. The second equivalent circuit 30 is selectively controlled in the energized state by the switching means, and a negative signal and power are supplied through the second energizing line 31.

In addition, when using a multimedia function of the mobile phone, the user can switch the mode of the two-mode speaker 19 to the ear speaker mode or the loudspeaker mode using an external switch.

The scope of the present invention is not limited to the above embodiments, but is determined by the matters described in the claims, and it is obvious that the present invention includes various modifications and adaptations made by those skilled in the art in the same range as the matters described in the claims.

According to the present invention as described above, the ear speaker output and the loudspeaker output can be obtained using the same speaker according to the user's selection, and the speaker can be slimmed down because the speaker is shared for each mode. do.

In addition, it is possible to operate by one-way speakers while having two-mode speaker output, and speaker holes can also be formed in one direction, eliminating many limitations in structural arrangement, and enhancing appearance satisfaction. Done.

Claims (6)

A portable electronic device having different speaker outputs, a first speaker output and a second speaker output, A first equivalent circuit having a resistance value equivalent to a resistance value for the first speaker output; A second equivalent circuit installed so as to be connected to the first equivalent circuit, and having a total resistance value including the first equivalent circuit in a state of being connected to the first equivalent circuit so as to be equivalent to a resistance value for the second speaker output; ; And selectively energizing the second equivalent circuit to the first equivalent circuit, and automatically switching the mode to the first speaker output and the second speaker output according to the nature of the sound source. Portable electronics with two mode speakers. The portable electronic device of claim 1, wherein the first speaker output corresponds to an output of a loudspeaker and the second speaker output corresponds to an output of an ear speaker. The method according to claim 1, wherein when the second equivalent circuit is turned off, the sound source signal is transmitted from the first conduction line connected to both ends of the first equivalent circuit, the second equivalent circuit when the second equivalent circuit is in the on state A portable electronic device having a two-mode speaker, characterized in that the sound source signal is transmitted from the second conducting line connected to both ends of the circuit. The portable electronic device according to any one of claims 1 to 3, wherein the speaker hole for the two mode speaker is formed in a single direction. The portable electronic device according to any one of claims 1 to 3, wherein the switching means includes an external switch external to the housing of the electronic device. delete

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