KR20160033490A - Accessory Apparatus of four Pole Audio Plug-Jack Connector Type and Method for Supplying Power thereof - Google Patents

Accessory Apparatus of four Pole Audio Plug-Jack Connector Type and Method for Supplying Power thereof Download PDF

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Publication number
KR20160033490A
KR20160033490A KR1020140124453A KR20140124453A KR20160033490A KR 20160033490 A KR20160033490 A KR 20160033490A KR 1020140124453 A KR1020140124453 A KR 1020140124453A KR 20140124453 A KR20140124453 A KR 20140124453A KR 20160033490 A KR20160033490 A KR 20160033490A
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KR
South Korea
Prior art keywords
contact
mode
terminal
switched
microphone
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Application number
KR1020140124453A
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Korean (ko)
Inventor
박태준
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박태준
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Priority to KR1020140124453A priority Critical patent/KR20160033490A/en
Publication of KR20160033490A publication Critical patent/KR20160033490A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/58—Contacts spaced along longitudinal axis of engagement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2107/00—Four or more poles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/01—Hearing devices using active noise cancellation

Abstract

The power supply method of the accessory device of the present invention is characterized in that when connected to a host, power is always supplied from a host through a microphone terminal to a signal processing unit, and when the operation mode is switched from a non- The first common contact of the first switching unit is switched from the first contact to the second contact connected to the first voice channel terminal and then the second common contact of the second switching unit connected to the second voice channel terminal is connected to the first contact of the first switching unit Switches from the third contact to the fourth contact to which the microphone is connected, switches the second common contact of the second switching unit from the fourth contact to the third contact when the mode is switched from the call mode to the non-call mode, 1 Switch the common contact from the second contact to the first contact. Therefore, it is possible to use the 4-pole audio plug-jack connector method to maintain the existing fidelity, and to supply the power to the signal processing section of the stereo earphone from the host at all times.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a four-pole audio plug-

The present invention relates to a four-pole audio plug-and-jack connector-type accessory device and a power supply method, and more particularly to an accessory device such as a headphone or earphone that can be connected to a quadrupole audio jack connector of a host such as a mobile phone, And a power supply method.

 An electrical device, such as a cellular phone, MP3 player, tablet or notebook computer, i.e., a host, has a four-pole audio jack connector for electrical connection with accessory devices such as earphones or headphones. The accessory device has a 4-pole audio plug connector that is inserted into the 4-pole audio jack and electrically connected. The 4-pole audio plug connector has an L-channel audio jack, an R-channel audio jack, a ground jack, and a microphone jack. Therefore, the 4-pole audio plug connector does not have a separate power supply terminal. Recently, however, various functions have been added to these accessory devices, and power supply is required.

Recently, noise cancellation technology has been introduced in earphones to enjoy high quality audio. The noise cancellation technology, that is, the Active Noise Cansellation (ANC) solution, reduces noise around the portable device and improves the voice quality to perform a receive path ANC (Active Noise Cancellation) function.

Such noise cancellation technology requires its own power supply. Therefore, the boss earphone Quiet Comfort 20 or the Sony earphone MDR-NC13 which are in circulation are equipped with a battery and a charging circuit for power supply of the earphone itself.

Such a battery-powered earphone is disadvantageous in that it is expensive and hinders the size and weight of the product.

On the other hand, in a host such as a mobile phone, a method of supplying a power supply voltage to an accessory device for a remote control signal, an identification signal, In other words, the ear microphone or earset is controlled by the host in accordance with the operation mode so that the microphone is used as the power supply terminal in normal operation and restored to the microphone terminal in the communication mode.

In such a case, power is supplied from the host to the accessory device, so that the battery and the charging circuit can be removed from the earphone, which is advantageous in terms of size and weight reduction and cost reduction. . Therefore, the function in the earset, for example, the noise canceling function is suspended due to the power supply interruption, so that the noise canceling function can not be used in the call mode.

2013-0101152, 2013-0069732, 2012-00833926, 2010-0128885, US2012 / 0085510

In order to solve the above problems, the present invention provides a four-pole audio plug-and-jack connector type accessory device and a power supply method which can always receive a constant power from a host regardless of an operation mode.

Another object of the present invention is to provide a four-pole audio plug-and-jack connector-type accessory device and a power supply method that can prevent pop noise from occurring when a power supply path is switched according to an operation mode.

Another object of the present invention is to provide a quadrupole audio plug-and-jack connector-type accessory device and a power supply method which can always receive a constant power and maintain the existing favorability.

In order to achieve the above-mentioned object of the present invention, the accessory device of the present invention is connected to the host in a quadrupole audio plug-and-jack connector manner having a first audio channel terminal, a second audio channel terminal, a ground terminal and a microphone terminal . The accessory device comprises: a signal processor connected between a first speaker, a second speaker, and at least one microphone and a quadrupole audio plug connector for processing a signal; and a controller for receiving power from a host through the microphone terminal, And an active power supply unit for selectively switching the second audio channel terminal to the second speaker and the microphone in accordance with the operation mode.

In the present invention, the active power supply unit maintains the second audio channel terminal connected to the second speaker when the operation mode is the non-communication mode, and connects the second audio channel terminal to the microphone when the operation mode is the communication mode.

The active power supply unit switches the first common contact connected to the second speaker from the first contact to the second contact connected to the first voice channel terminal when the operation mode is switched from the non-talk mode to the talk mode, A first switching unit for switching the first common contact from the second contact to the first contact when the mode is switched to the non-speaking mode, and a second switching unit for, when the mode is switched from the non- The common contact is switched from the third contact connected to the first contact of the first switching unit to the fourth contact connected to the microphone and the second common contact is switched from the fourth contact to the third contact when the mode is switched from the call mode to the non- And a second switching unit for switching the operation mode from the non-communication mode to the communication mode, And a control unit for generating a switch control signal so that the first switching unit performs switching operation prior to the second switching unit when the mode is switched from the communication mode to the non-communication mode. Such a configuration can prevent the occurrence of pop noise that may occur during mode switching.

The power supply method of the present invention is characterized in that when connected to a host, power is always supplied from a host through a microphone terminal to a signal processing unit, and when a mode is switched from a non-call mode to a call mode, A second common contact point of the second switching unit connected to the second audio channel terminal is connected to a third contact point connected to the first contact point of the first switching unit after switching the common contact point from the first contact point to the second contact point connected to the first audio channel terminal, To the fourth contact to which the microphone is connected. When the mode is switched from the call mode to the non-call mode, the second common contact of the second switching unit is switched from the fourth contact to the third contact, From the second contact to the first contact.

The stereo earphone accessory device of the present invention according to the present invention as described above can be applied to a case where the power supply to the signal processor inside the stereo earphone is required , Power can be always supplied from the host through the microphone terminal, thereby enhancing the audio performance and adding various functions within the stereo earset. The accessory device of the present invention is characterized in that when the power supply voltage supply terminal is changed from the microphone terminal to the second audio channel terminal, the host changes the voltage of the microphone terminal to the accessory device so that the accessory device can perform various operations in advance. It is possible to prevent the electric shock from being transmitted to the user's ear by blocking the pop noise that may be generated in advance.

However, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned above can be clearly understood by those skilled in the art without departing from the spirit and scope of the present invention.

1 shows a host 30 having a stereo earset accessory device 10 with a quadrupole plug connector 11 of the present invention and a quadrupole jack connector 31. Fig.
2 is a circuit diagram of a preferred embodiment of an accessory device 10 according to the present invention.
FIG. 3 is a flow chart for explaining the operation of the accessory device 10 of FIG. 2; FIG.
4 is a flowchart for explaining the operation of the host apparatus 30 of FIG.

For the embodiments of the invention disclosed herein, specific structural and functional descriptions are set forth for the purpose of describing an embodiment of the invention only, and it is to be understood that the embodiments of the invention may be practiced in various forms, The present invention should not be construed as limited to the embodiments described in Figs.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are herein described in detail. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Similar reference numerals have been used for the components in describing each drawing.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having", etc., are intended to specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, But do not preclude the presence or addition of other features, numbers, steps, operations, elements, parts or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

Figure 1 shows a host 30 having a stereo earset accessory device 10 and quadrupole jack connector 31 with a quadrupole plug connector 11 of the present invention.

1, the stereo earphone accessory device 10 includes an L-channel ear speaker 12, an R-channel ear speaker 13, a microphone 14 and a remote controller 15 via a cable 16, And is connected to the connector 11. The remote controller 15 may include control switches such as a call switch, a volume up / down switch, and a mode selection switch. The remote controller 15 may also include a signal processing circuit such as an active noise canceling circuit ANC.

The host 30 is a smart phone terminal which is a mobile communication device and has a housing 32 and a display 33 on the front side. A four-pole jack connector 31 is mounted on the edge of the housing 32.

The accessory device 10 and the host 30 are wired in a jack-plug connector manner through the four-pole plug connector 11 and the four-pole jack connector 31. [ When the accessory device 10 operates in the stereo music listening mode, the microphone 14 is in a non-active state. When the call switch button of the remote controller 15 is pressed, the host 30 operates in the call mode, the accessory device is in the call mode, and the microphone 14 becomes active and can pick up the voice signal.

Figure 2 shows a circuit diagram of a preferred embodiment of the accessory device 10 according to the invention.

Referring to the drawings, the accessory device 10 includes audio plug terminals, a first audio channel terminal (L) 11a, a second audio channel terminal (R) 11b, a microphone terminal M; 11c, and a ground terminal (G; 11d).

 The accessory device 10 includes a first speaker 12, a second speaker 13, a microphone 14, a signal processing unit 20, and an active power supply unit 22.

The signal processing unit 20 includes a noise elimination circuit ANC connected between the first speaker 12 and the second speaker 13 and between the at least one microphone 14 and the quadrupole audio plug connector 11 to process signals, . ≪ / RTI > The signal processor 20 may be coupled to the remote controller 15 to generate control switches such as a call switch, a volume up / down switch, a mode selection switch, and the like. The generated control switch signal may be transmitted to the host 30 via the microphone terminal 11c. The signal processing unit 20 includes a power supply terminal Vdd to which a power supply voltage is supplied. The power supply terminal Vdd is connected to the microphone terminal 11c. The signal processing section 20 can generate an accessory identification signal. The accessory identification signal may be transmitted to the host 30 via the microphone terminal 11c.

The active power supply unit 22 includes a first switching unit 22a, a second switching unit 22b, and a control unit 22c.

The first switching unit 22a is constituted by a switch having a first common contact c1, a first contact a1 and a second contact b1. The second switching unit 22b is constituted by a switch having a second common contact c2, a third contact a2 and a fourth contact b2.

The first common contact c1 of the first switching unit 22a is connected to the second speaker 13 through the signal processing unit 20 and the first contact a1 is connected to the third contact point c1 of the second switching unit 22b. And the second contact b1 is connected to the first audio channel terminal 11a. The second common contact c2 of the second switching unit 22b is connected to the second audio channel terminal 11b and the fourth contact b2 is connected to the microphone 14 through the signal processing unit 20. [ Each of the first and second switching units 22a and 22b is maintained in a state in which the common contact and the first contacts c1-a1 and c2-a2 are connected in the non-active state of the switching control signal, 2 contacts (c1-b1, c2-b2) remain connected.

The control unit 22c detects the voltage change of the microphone terminal 11c and generates the switching control signals s1 and s2. The control unit 22c may be constituted by individual elements such as a comparator and a delay unit, or may be constituted by a microprocessor or a microcomputer. The control unit 22c detects that the voltage state of the microphone terminal 11c is down from the first level, for example, 2.8V to the second level, for example, 2.5V, and generates the switching control signals s1 and s2. The switching control signal s1 is applied to the control terminal of the first switching unit 22a and the switching control signal s2 is applied to the control terminal of the second switching unit 22a.

The host 30 has audio jack terminals, a first audio channel terminal (L) 31a, a second audio channel terminal (R) 31b, a microphone terminal (M) 31c, Terminal (G) 31d.

The host 30 includes a voice processing unit 41, a control unit 42, a first switch SW1, a second switch SW2, a third switch SW3, a first resistor R1, a second resistor R2, . The host 30 includes a wireless transceiver, a key input unit, a touch pad, a liquid crystal display, and the like.

The first audio channel terminal L 31a is connected to the audio processing unit 41 through the AC coupling capacitor C1 and the second audio channel terminal R 31b is connected to the common contact c3 of the first switch SW1 And the microphone terminal M 31c is connected to the common contact C5 of the third switch SW3 and the ground terminal G 31d is connected to the ground. The first contact a3 of the first switch SW1 is connected to the voice processing unit 41 through the AC coupling capacitor C2 and the second contact b3 is connected to the voice processing unit 41 via the AC coupling capacitor C3. . The first contact a4 of the second switch SW2 is connected to the power source voltage Vcc and the second contact B4 is connected to the power source voltage Vcc through the second resistor R2. The first contact a5 of the third switch SW3 is connected to the power supply voltage Vcc through the first resistor R1 and is simultaneously connected to the voice processing unit 41 through the AC coupling capacitor C3, And the second contact b5 is connected to the common contact c4 of the second switch SW2.

The control unit 42 generates the switching control signals s3, s4 and s5 by selecting the touch key or the keypad. The control unit 42 generates the switching control signals s3, s4 and s5 in response to the remote control call key selection of the accessory 10. The control unit 42 also generates the switching control signals s3, s4 and s5 in response to the identification signal of the accessory 10.

Fig. 3 shows a flowchart for explaining the operation of the accessory device 10 of Fig.

The operation of the accessory device 10 of the present invention will now be described with reference to FIG.

Referring to FIG. 3, the control unit 22c checks whether or not the host apparatus 30 is connected (S100). When the connection of the host apparatus 30 is confirmed, the control unit 22c receives the power supply voltage Vcc from the host through the microphone terminal 11c regardless of the operation mode (S102).

In a state where the power source voltage is supplied through the microphone terminal M, the control unit 22c checks whether a call mode ack signal is input through the microphone terminal (S104). That is, whether the level of the potential of the microphone terminal 11c changes from 2.8V to 2.5V.

If the voltage drop state is checked in step S104, the controller 22c first turns on the first switching unit 22a to commonly connect the first and second speakers to the first audio channel terminal 11a (S106). Therefore, the audio channel is switched from the stereo reception mode to the mono reception mode. Then, the control unit 22c turns on the second switching unit 22b to connect the microphone output to the second audio channel terminal 11b (S108). The first switching unit 22a is first switched to the mono mode than the second switching unit 22b to block the noise generated during switching of the second switching unit 22b. When switching to the call mode, the microphone output is transmitted to the host through the second audio channel terminal, so that the power supply voltage supply state through the microphone terminal can be maintained.

In response to the end of the call mode, the control unit 22c checks whether a call mode end ack signal is input through the microphone terminal (S110). That is, whether the level of the potential of the microphone terminal 11c changes from 2.8V to 2.5V.

If the voltage drop state is checked in step S110, the control unit 22c first turns off the second switching unit 22b and separates the microphone output from the second audio channel terminal 11b (S112). Next, the control unit 22c turns on the first switching unit 22a to connect the second speaker to the second audio channel terminal 11b (S114). Thus, the mono mode is restored to the stereo mode. In this case, the second switching unit 22b is switched over from the first switching unit 22a first, thereby blocking the noise generated during switching of the second switching unit 22b.

Fig. 4 shows a flowchart for explaining the operation of the host device 30 in Fig.

Referring to FIG. 4, the control unit 42 of the host device 30 checks whether or not the accessory device 10 is connected (S200). When the connection of the accessory device 10 is confirmed, the control unit 42 identifies the model of the accessory device (S201). And sets a switching control algorithm corresponding to the identified accessory model. In the present invention, since the microphone terminal is a normal power supply model, the third switch SW3 is turned on so that the power supply voltage Vcc is supplied to the accessory device 10 through the microphone terminal 31c to maintain the power supply voltage at all times. Therefore, in the present invention, the accessory device 10 always maintains the power supply voltage supply state regardless of the operation mode when connected to the host device 30 (S202).

In step S201, the third switch SW3 is maintained in the OFF state, and the microphone bias voltage through the first resistor R1 is applied to the microphone terminal (S203).

In step S202, the controller 42 checks whether the operation mode is the communication mode (S204). Initially, since it is in the non-communication mode, the control unit 42 keeps all of the first switches SW1 and SW2 off. Therefore, the audio output of the host apparatus 30 maintains the stereo output mode (S206).

The control unit 42 checks whether there is a request to switch the operation mode from the non-communication mode to the communication mode (S208). If it is determined in step S208 that the switching request to the communication mode is checked, the control unit 42 turns on the first switch SW1 to cut off the output of the second audio channel signal and switch the second audio channel terminal 31b to the microphone input (S210). The control unit 42 turns on the second switch SW2 for a predetermined time and then turns off to output an ack signal indicating the operation mode switching state to the microphone terminal. That is, during the period in which the second switch SW2 is on, a mode switching ack signal of 2.5V is supplied to the accessory device 10 via the microphone terminal M (S212) instead of the power supply voltage of 2.8V.

The control unit 42 checks whether or not the call mode is ended (S214). In step S214, if the call mode is not ended, the call mode is maintained. In step S214, the control unit 42 turns off the first switch SW1 to cut off the microphone input, and returns to the stereo output state from the mono output state (S216). Then, the controller 42 turns on and off the second switch SW2 for a predetermined time, and outputs an ack signal indicating the operation mode switching state to the microphone terminal. That is, the mode switching ack signal of 2.5V is supplied to the accessory device 10 via the microphone terminal M (S218) instead of the power supply voltage of 2.8V during the period when the second switch SW2 is on.

The present invention can continuously supply the power supply voltage to the accessory regardless of the operation mode switching while maintaining the compatibility of the conventional four-pole audio connector as described above, thereby achieving stabilization of the signal processing power of the accessory. This allows for a variety of applications from a host to a stable power supply in the absence of a battery and a charging circuit in an accessory device.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It will be understood that the invention may be modified and varied without departing from the scope of the invention.

Claims (4)

An accessory device connected to a host in a quadrupole audio plug-and-jack connector manner having a first audio channel terminal, a second audio channel terminal, a ground terminal and a microphone terminal,
A signal processor connected between the first speaker, the second speaker and at least one microphone and the quadrupole audio plug connector to process the signal; And
An active power supply unit for supplying power to the power supply terminal of the signal processing unit through the microphone terminal at all times and selectively switching the second audio channel terminal to the second speaker and the microphone in accordance with the operation mode One accessory device. The mobile communication terminal of claim 1, wherein the active power supply unit maintains the second audio channel terminal connected to the second speaker when the operation mode is the non-communication mode, and connects the second audio channel terminal to the microphone Accessories. The apparatus of claim 1, wherein the active power supply
When the operation mode is switched from the non-call mode to the call mode, the first common contact connected to the second speaker is switched from the first contact to the second contact connected to the first voice channel terminal, A first switching unit for switching the first common contact from the second contact to the first contact when the first common contact is switched;
When the operation mode is switched from the non-call mode to the call mode, the second common contact connected to the second voice channel terminal is switched from the third contact connected to the first contact of the first switching unit to the fourth contact connected to the microphone A second switching unit for switching the second common contact from the fourth contact to the third contact when the mode is switched from the communication mode to the non-communication mode;
When the operation mode is switched from the non-communication mode to the communication mode, the first switching unit generates a switch control signal to perform switching operation before the second switching unit, and when the mode is switched from the communication mode to the non- And a control unit for generating a switch control signal for performing a switching operation before the second switching unit. A method of supplying power to an accessory device connected to a host through a four-pole audio plug-and-jack connector method having a first audio channel terminal, a second audio channel terminal, a ground terminal and a microphone terminal,
When the host is connected to the host, the power is always supplied from the host to the signal processing unit through the microphone terminal,
Switching the first common contact of the first switching unit connected to the second speaker from the first contact to a second contact connected to the first voice channel terminal when the operation mode is switched from the non-talk mode to the talk mode, Switches a second common contact of a second switching unit connected to a voice channel terminal from a third contact connected to the first contact of the first switching unit to a fourth contact connected to the microphone,
When the mode is switched from the communication mode to the non-communication mode, the second common contact of the second switching unit is switched from the fourth contact to the third contact, and then the first common contact of the first switching unit is switched from the second contact to the non- A method of powering an accessory device that switches to one contact.
KR1020140124453A 2014-09-18 2014-09-18 Accessory Apparatus of four Pole Audio Plug-Jack Connector Type and Method for Supplying Power thereof KR20160033490A (en)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2018030687A1 (en) * 2016-08-12 2018-02-15 삼성전자주식회사 Apparatus and method for processing audio signal
CN111402915A (en) * 2020-03-23 2020-07-10 联想(北京)有限公司 Signal processing method, device and system

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KR20130101152A (en) 2011-08-10 2013-09-12 고어텍 인크 Communication headset speech enhancement method and device, and noise reduction communication headset

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Publication number Priority date Publication date Assignee Title
KR20130101152A (en) 2011-08-10 2013-09-12 고어텍 인크 Communication headset speech enhancement method and device, and noise reduction communication headset

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018030687A1 (en) * 2016-08-12 2018-02-15 삼성전자주식회사 Apparatus and method for processing audio signal
KR20180018152A (en) * 2016-08-12 2018-02-21 삼성전자주식회사 Method and apparatus for processing an audio signal
US11234076B2 (en) 2016-08-12 2022-01-25 Samsung Electronics Co., Ltd Apparatus and method for processing audio signal
CN111402915A (en) * 2020-03-23 2020-07-10 联想(北京)有限公司 Signal processing method, device and system

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