WO2013010487A1 - 一种音频信号转接装置、音频信号传输系统 - Google Patents
一种音频信号转接装置、音频信号传输系统 Download PDFInfo
- Publication number
- WO2013010487A1 WO2013010487A1 PCT/CN2012/078834 CN2012078834W WO2013010487A1 WO 2013010487 A1 WO2013010487 A1 WO 2013010487A1 CN 2012078834 W CN2012078834 W CN 2012078834W WO 2013010487 A1 WO2013010487 A1 WO 2013010487A1
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- Prior art keywords
- pin
- audio signal
- audio
- output
- usb
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Classifications
-
- 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
- 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
- H04R2420/09—Applications of special connectors, e.g. USB, XLR, in loudspeakers, microphones or headphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
Definitions
- Audio signal switching device audio signal transmission system
- the present invention relates to the field of electronic technologies, and in particular, to an audio signal switching device and an audio signal transmission system. Background technique
- the electronic device may be connected to the mobile communication device through a port (for example, a headphone interface) of the mobile communication device (for example, a mobile phone), receive an audio signal output by the mobile communication device, or receive the mobile communication device through a microphone (MIC). Or the audio signal output by the speaker of the fixed telephone device.
- a port for example, a headphone interface
- the mobile communication device for example, a mobile phone
- receive an audio signal output by the mobile communication device or receive the mobile communication device through a microphone (MIC).
- MIC microphone
- the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an audio signal switching device that can output an audio signal output by a speaker to an electronic device through a USB interface and a corresponding audio signal receiving device.
- the present invention provides an audio signal transmission system for receiving an audio signal
- the system includes: an audio signal switching device, an audio signal receiving device;
- the audio signal switching device includes: a microphone, an amplifying unit a USB transfer interface;
- the microphone is configured to receive an audio signal and output through an audio pin;
- the amplifying unit includes an audio input pin and an audio output pin for receiving through the audio input pin
- the audio signal is amplified, and the amplified audio signal is output through the audio output pin;
- the USB transfer interface is coupled to the audio signal receiving device Connecting, and including an audio signal pin;
- an audio pin of the microphone is connected to an audio input pin of the amplifying unit;
- an audio output pin of the amplifying unit is connected to an audio signal pin of the USB adapter interface
- the audio signal receiving device includes: a USB interface, an audio receiving module;
- the USB interface includes an audio signal pin; and an audio signal pin of the USB interface is connected to an audio signal pin of the USB adapter interface;
- the audio receiving module is
- the microphone further includes a ground pin;
- the amplifying unit further includes a ground pin;
- the USB transfer interface and the USB interface further include a reference signal pin; the reference signal pin of the USB transfer interface Connected to a ground pin of the microphone, and/or a ground pin of the amplifying unit; the reference signal pin is another of the D+ and D- pins of the USB transfer interface and the USB interface One.
- the audio receiving module further includes: a comparator; a positive pole and a negative pole of the comparator are respectively connected to an audio signal pin and a reference signal pin of the USB interface, and an output pin of the comparator is used for outputting a square wave corresponding to the input audio signal; or, the positive and negative poles of the comparator are respectively connected to a reference signal pin and an audio signal pin of the USB interface, and an output pin of the comparator is used for output A square wave corresponding to the input audio signal.
- the audio receiving module further includes: a DC signal isolation unit, a first DC bias unit, a second DC bias unit, a comparator; an audio input of the DC signal isolation unit and the USB interface a signal pin is connected, and the output end is connected to the second DC bias unit for isolating a DC level in the audio signal received through the audio signal pin of the USB interface, and outputting through the output end thereof;
- An input end of the second DC bias unit is connected to the DC signal isolation unit, and an output end is connected to the negative pole of the comparator for adding a DC offset to the audio signal input through the input end thereof, and passing through the output end thereof Outputting an audio signal after DC offset;
- an output of the first DC bias unit is connected to a positive terminal of the comparator for outputting a reference level; and the comparator is used for a reference current input at a positive pole and a negative pole thereof Under the action of the flat audio signal, the square wave corresponding to the audio signal is output through its output terminal.
- the output of the comparator is connected to the
- the first DC bias unit includes: a resistor (R3), a resistor (R4); one end of the resistor (R3) is connected to the power source, and the other end is connected to the resistor (R4); One end of R4) is connected to the resistor (R3) and the output end of the first DC bias unit, and the other end is grounded;
- the second DC bias unit comprises: a resistor (R5), a resistor (R6); One end of the resistor (R5) is connected to the power source, and the other end is connected to the resistor (R6); one end of the resistor (R6) and the output of the resistor (R5) and the second DC bias unit Connected, the other end is grounded; the output voltage of the power supply connected to the first DC bias unit, the resistance of the resistor (R3), the resistance of the resistor (R4) and the second DC bias respectively The output voltage of the power source connected to the unit, the resistance of the resistor (R5), and the resistance of the resistor (R6) are the same.
- the present invention also provides an audio signal switching device, comprising: a microphone; the device further includes an amplifying unit and a USB switching interface; wherein: the microphone is configured to receive an audio signal and output through an audio pin;
- the amplifying unit includes an audio input pin and an audio output pin, configured to amplify an audio signal received through the audio input pin, and output an amplified audio signal through the audio output pin;
- the interface is connected to the audio signal receiving device, and includes: an audio signal pin; an audio pin of the microphone is connected to an audio input pin of the amplifying unit; an audio output pin of the amplifying unit is connected to the USB The audio signal pins of the interface are connected; wherein the audio signal pins of the USB adapter interface are one of D+ and D- pins.
- the microphone further includes a ground pin;
- the amplifying unit further includes a ground pin;
- the USB transfer interface further includes a reference signal pin; a reference signal pin of the USB transfer interface and the A ground pin of the microphone, and/or a ground pin of the amplifying unit; the reference signal pin being the other of the D+ and D- pins of the USB transfer interface.
- the present invention realizes the function of the electronic device (audio signal receiving device) receiving the audio signal output by the speaker through the USB interface at a lower hardware cost; and the audio signal switching device of the present invention When used together with (for example, audio cable), the electronic device can receive the audio signal output by the speaker through the USB interface, without setting a separate port, and without setting the MIC function module, reducing the cost of the electronic device and reducing the electronic The volume of the device. Attachment 3 ⁇ 4
- FIG. 1 is a schematic structural view of a first embodiment of an audio signal switching device of the present invention
- FIG. 2 is a schematic structural view of a first embodiment of an audio signal receiving apparatus of the present invention
- FIG. 3 is a schematic structural view of a second embodiment of an audio signal switching device of the present invention.
- FIG. 4 is a schematic structural view of a third embodiment of an audio signal switching device of the present invention.
- Figure 5 is a block diagram showing the structure of a third embodiment of the audio signal receiving apparatus of the present invention.
- FIG. 6 is a schematic structural view of a fourth embodiment of an audio signal switching device of the present invention.
- Figure 7 is a block diagram showing the structure of a fourth embodiment of the audio signal receiving apparatus of the present invention. With a 'body'* way
- the audio signal switching device in the present invention may be an audio line, an audio patch cord, an audio adapter, or the like.
- FIG. 1 is a schematic structural view of a first embodiment of an audio signal switching device of the present invention; as shown in FIG.
- the audio signal switching device comprises: a microphone (MIC), an amplifying unit (such as the amplifier shown in FIG. 1), a USB transfer interface (such as the USB plug shown in FIG. 1);
- Microphone an audio signal for receiving (output) a speaker of an audio signal transmitting device (for example, a mobile phone or a landline telephone).
- the MIC contains the following pins: the audio pin (the AUDIO pin shown in Figure 1) and the ground (GND) pin.
- the audio pin of the MIC is used to output the audio signal; the ground pin of the MIC is grounded.
- An amplifier for amplifying the received audio signal and outputting the amplified audio signal contains the following pins: audio input pin, audio output pin, power input pin (VCC), ground (GND) pin.
- the audio input pin of the amplifier is connected to the audio pin of the MIC to receive the audio signal output from the MIC pin.
- the audio output pin of the amplifier is used to output the amplified audio signal.
- the amplifier's power input pin is used to connect to the power supply; the amplifier's ground pin is grounded.
- the MIC's ground pin can also be connected to the amplifier's ground pin.
- a USB plug for connecting to the USB slot of the audio signal receiving device to output an audio signal thereto.
- the USB plug contains: power supply pin (VBUS pin), D+ pin, D- pin, ground pin.
- the audio output pin of the amplifier is connected to the D+ pin of the USB plug; the ground pin of the MIC, and/or the ground pin of the amplifier are connected to the D- pin of the USB plug. That is to say, in the embodiment, the audio signal switching device uses the D+ pin of the USB plug as an audio signal pin and the D- pin as a reference signal pin to output an audio signal to the audio signal receiving device in a differential manner.
- the audio signal pins of the USB transfer interface and the USB interface are one of D+ and D- pins
- the reference signal pins are D+ and D of the USB transfer interface and the USB interface. - The other of the pins.
- Audio signal switching device and electronic device can be brought close to the speaker of the audio signal transmitting device (for example, a mobile phone, a fixed telephone) to receive the audio signal played by the speaker, the USB plug/slot of the audio signal switching device and the electronic device USB slot/plug connection, audio signal switching device uses the D+ pin of the plug/slot (collectively referred to as USB transfer interface) as the audio signal pin, and uses the D- pin as the reference signal pin, so that The audio signal received by the MIC is amplified and transmitted to an electronic device (audio signal receiving device) connected thereto.
- 2 is a schematic structural diagram of a first embodiment of an audio signal receiving apparatus according to the present invention; as shown in FIG. 2, the apparatus includes: a USB interface (such as the USB slot shown in FIG. 2), and an audio receiving module.
- USB slot for connecting to the USB plug of the audio signal switching device to receive the audio signal output from it.
- the USB slot contains: power supply pin (VBUS pin), D+ pin, D- pin, ground pin.
- the audio receiving module is connected to the D+ pin and the D- pin of the USB slot, and the D+ pin of the USB slot is used as an audio signal pin, and the D- pin is used as a reference signal pin, which is received through the D+ pin and D. - Audio signal transmitted by the pin.
- the audio receiving module includes a comparator, and the positive and negative poles of the comparator are respectively connected to the D+ and D- pins, the grounding pin is grounded, the power pin is connected to the power source, and the output pin is used for the output pin.
- a square wave corresponding to the input audio signal is output.
- the positive and negative poles of the comparator can also be connected to the D- and D+ bows, respectively.
- the first embodiment of the audio signal transmission system of the present invention is composed of the above audio signal switching device and audio signal receiving device. Second embodiment
- FIG. 3 is a schematic structural view of a second embodiment of the audio signal switching device of the present invention. As shown in FIG. 3, the second embodiment of the audio signal switching device of the present invention is different from the first embodiment in that:
- the audio signal switching device uses the D-pin of the USB plug as an audio signal.
- the pin is connected to the audio output pin of the amplifier, and the D+ pin is connected as a reference signal pin to the ground pin of the MIC, and/or the ground pin of the amplifier, and outputs an audio signal to the audio signal receiving device.
- the second embodiment of the audio signal receiving apparatus is the same as the first embodiment.
- the second embodiment of the audio signal transmission system of the present invention is composed of the above-described audio signal switching device and audio signal receiving device.
- Third embodiment is composed of the above-described audio signal switching device and audio signal receiving device.
- FIG. 4 is a schematic structural view of a third embodiment of the audio signal switching device of the present invention. As shown in FIG. 4, the third embodiment of the audio signal switching device of the present invention is different from the first embodiment in that:
- FIG. 5 is a schematic structural diagram of a third embodiment of an audio signal receiving apparatus according to the present invention; as shown in FIG. 5, the apparatus includes: a USB interface (such as a USB slot shown in FIG. 5), and an audio receiving module.
- a USB interface such as a USB slot shown in FIG. 5
- USB slot for connecting to the USB plug of the audio signal switching device to receive the audio signal output from it.
- the USB slot contains: power supply pin (VBUS pin), D+ pin, D- pin, ground pin.
- the input of the audio receiving module is connected to the audio signal pin (D+ pin) for receiving the audio signal through the audio signal pin (D+ pin) and outputting through its output.
- the audio receiving module includes: a DC signal isolation unit, a first DC bias unit, a second DC bias unit, and a comparator.
- the audio receiving module includes: a DC signal isolation unit, a first DC bias unit, a second DC bias unit, and a comparator.
- the DC signal isolation unit includes a capacitor C1 for isolating the DC level, the capacitor One end of the CI (the input of the DC signal isolation unit) is connected to the audio signal pin, and the other end (the output of the DC signal isolation unit) is connected to the second DC bias unit.
- the capacitance of capacitor C1 can be 0.1 F.
- the output of the first DC bias unit is coupled to the positive terminal of the comparator for outputting a reference level to the comparator.
- the first DC biasing unit includes: a resistor R3 and a resistor R4; one end of the resistor R3 is connected to the power source, and the other end is connected to the resistor R4; one end of the resistor R4 is connected to the resistor R3 and the first DC bias unit. The outputs are connected and the other end is grounded.
- the input end of the second DC bias unit is connected to the output end of the DC signal isolation unit, and the output end is connected to the negative pole of the comparator for adding a DC offset to the audio signal input to the input end thereof, and boosting the minimum voltage of the audio signal Up to 0 volts or more, and output the dc biased audio signal through its output.
- the second DC biasing unit includes: a resistor R5 and a resistor R6; one end of the resistor R5 is connected to the power source, and the other end is connected to the resistor R6; one end of the resistor R6 is connected to the input end of the second DC bias unit, and the resistor R5 is connected to the output of the second DC bias unit, and the other end is grounded.
- the output voltage of the power supply of the first DC bias unit, the resistance of the resistor R3, and the resistance of the resistor R4 are respectively the same as the output voltage of the power source of the second DC bias unit, the resistance of the resistor R5, and the resistance of the resistor R6. .
- the resistance of the resistor R3 and the resistor R5 may be 150K ohms
- the resistance of the resistor R4 and the resistor R6 may be 15K ohms.
- the anode of the comparator is connected to the output of the first DC bias unit
- the cathode of the comparator is connected to the output of the second DC bias unit
- the output of the comparator is connected to the output of the audio receiving module. (ie as the output of the audio receiving module), the square wave corresponding to the audio signal is output.
- the output of the comparator is connected to its positive terminal via a resistor R7 to form a loop, and the output of the comparator is connected to a pull-up resistor R8.
- a third embodiment of the audio signal transmission system of the present invention is composed of the above-described audio signal switching device and audio signal receiving device. Fourth embodiment
- FIG. 6 is a schematic structural view of a fourth embodiment of the audio signal switching device of the present invention. As shown in FIG. 6, the fourth embodiment of the audio signal switching device of the present invention is different from the third embodiment in that:
- the audio signal switching device connects the D- pin of the USB plug as an audio signal pin to the audio output pin of the amplifier, and outputs an audio signal to the audio signal receiving device.
- Figure 7 is a block diagram showing the structure of a fourth embodiment of the audio signal receiving apparatus of the present invention; as shown in Figure 7, the fourth embodiment of the audio signal receiving apparatus of the present invention is different from the third embodiment in that:
- the input end of the audio receiving module is connected to the D-pin for receiving an audio signal through the D-pin and outputting through the output terminal thereof.
- a fourth embodiment of the audio signal transmission system of the present invention is composed of the above-described audio signal switching device and audio signal receiving device.
- the present invention realizes a function of an electronic device (audio signal receiving device) receiving an audio signal output by a speaker through a USB interface at a lower hardware cost; and an audio signal switching device (for example, an audio line) of the present invention.
- the electronic device can receive the audio signal output by the speaker through the USB interface, and does not need to set a separate rabi interface, and does not need to set the MIC module, which reduces the cost of the electronic device and reduces the size of the electronic device.
- connection should be understood broadly, and may be either a fixed connection or a detachable connection, or Connected integrally; may be mechanically connected or electrically connected; may be directly connected, or may be indirectly connected through an intermediate medium. It will be understood by those skilled in the art that the above terms are specific in the present invention. Further, in the description of the present invention, “multiple” means two or more unless otherwise stated.
- any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a particular logical function or process.
- the scope of the preferred embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an opposite order depending on the functions involved, in the order shown or discussed. It will be understood by those skilled in the art to which the embodiments of the present invention pertain. The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope of the present disclosure. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.
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Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120814990 EP2736265A4 (en) | 2011-07-18 | 2012-07-18 | AUDIO SIGNAL ADAPTER DEVICE AND AUDIO SIGNAL TRANSMISSION SYSTEM |
CA2842254A CA2842254C (en) | 2011-07-18 | 2012-07-18 | Audio signal adapter device and system for transmitting audio signal |
US14/233,422 US9357297B2 (en) | 2011-07-18 | 2012-07-18 | Audio signal adapter device and system for transmitting audio signal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110201205.2A CN102387429B (zh) | 2011-07-18 | 2011-07-18 | 一种音频信号转接装置、音频信号传输系统 |
CN201110201205.2 | 2011-07-18 |
Publications (1)
Publication Number | Publication Date |
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WO2013010487A1 true WO2013010487A1 (zh) | 2013-01-24 |
Family
ID=45826293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2012/078834 WO2013010487A1 (zh) | 2011-07-18 | 2012-07-18 | 一种音频信号转接装置、音频信号传输系统 |
Country Status (5)
Country | Link |
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US (1) | US9357297B2 (zh) |
EP (1) | EP2736265A4 (zh) |
CN (1) | CN102387429B (zh) |
CA (1) | CA2842254C (zh) |
WO (1) | WO2013010487A1 (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102387429B (zh) * | 2011-07-18 | 2014-04-02 | 天地融科技股份有限公司 | 一种音频信号转接装置、音频信号传输系统 |
WO2016110599A1 (en) * | 2015-01-11 | 2016-07-14 | Relish Brothers Ag | Connector for an electric harness conducting electric signals with a frequency of not more than 30khz |
CN104936051B (zh) * | 2015-01-19 | 2018-09-28 | 天地融科技股份有限公司 | 一种耳机、音箱和通话系统 |
CN109348385A (zh) * | 2018-10-22 | 2019-02-15 | 钰太芯微电子科技(上海)有限公司 | 一种具有回声消声系统的麦克风及电子设备 |
CN110444221A (zh) * | 2019-09-05 | 2019-11-12 | 成都克伏特航空设备有限公司 | 一种多路语音系统 |
CN111030465B (zh) * | 2019-12-24 | 2022-07-19 | 深圳市绿联科技股份有限公司 | 一种供电隔离的无线音频接收装置 |
CN112565978A (zh) * | 2020-11-30 | 2021-03-26 | 江苏云界安全技术有限公司 | 动圈麦克风电路和动圈麦克风 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5914877A (en) * | 1996-10-23 | 1999-06-22 | Advanced Micro Devices, Inc. | USB based microphone system |
CN1963742A (zh) * | 2006-11-23 | 2007-05-16 | 王祥贵 | 带麦克风放大器的usb接口连接线 |
CN102065160A (zh) * | 2010-12-02 | 2011-05-18 | 惠州Tcl移动通信有限公司 | 一种利用手机外接扬声器的电路 |
CN102387429A (zh) * | 2011-07-18 | 2012-03-21 | 北京天地融科技有限公司 | 一种音频信号转接装置、音频信号传输系统 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2833720Y (zh) * | 2005-05-26 | 2006-11-01 | 台均科技(深圳)有限公司 | 音频/usb信号复用线、播放存储设备及复用传输播放存储系统 |
CN1774143A (zh) * | 2005-10-13 | 2006-05-17 | 方泰公司 | 一种省去隔直电容的耳机输出电路 |
CN101207256B (zh) * | 2006-12-20 | 2010-09-29 | 鸿富锦精密工业(深圳)有限公司 | 一种音频信号转接装置 |
CN101217225B (zh) * | 2007-01-05 | 2011-07-27 | 鸿富锦精密工业(深圳)有限公司 | 一种音频信号转接装置 |
US8064613B1 (en) * | 2008-03-03 | 2011-11-22 | Maxim Integrated Products, Inc. | Electret microphone detection using a current source |
JP2010251859A (ja) * | 2009-04-10 | 2010-11-04 | Toshiba Corp | 携帯端末 |
CN201830430U (zh) * | 2010-10-09 | 2011-05-11 | 三星电子株式会社 | 自供电的具有主动噪音消除功能的耳机 |
KR20120068274A (ko) * | 2010-12-17 | 2012-06-27 | 삼성전자주식회사 | 휴대 단말기의 통합 커넥터 장치 및 이의 운용 방법 |
US9668076B2 (en) * | 2011-06-21 | 2017-05-30 | Apple Inc. | Microphone headset failure detecting and reporting |
CN103512650A (zh) * | 2012-06-21 | 2014-01-15 | 鸿富锦精密工业(深圳)有限公司 | 蜂鸣器测试电路 |
-
2011
- 2011-07-18 CN CN201110201205.2A patent/CN102387429B/zh active Active
-
2012
- 2012-07-18 EP EP20120814990 patent/EP2736265A4/en not_active Withdrawn
- 2012-07-18 CA CA2842254A patent/CA2842254C/en active Active
- 2012-07-18 WO PCT/CN2012/078834 patent/WO2013010487A1/zh active Application Filing
- 2012-07-18 US US14/233,422 patent/US9357297B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5914877A (en) * | 1996-10-23 | 1999-06-22 | Advanced Micro Devices, Inc. | USB based microphone system |
CN1963742A (zh) * | 2006-11-23 | 2007-05-16 | 王祥贵 | 带麦克风放大器的usb接口连接线 |
CN102065160A (zh) * | 2010-12-02 | 2011-05-18 | 惠州Tcl移动通信有限公司 | 一种利用手机外接扬声器的电路 |
CN102387429A (zh) * | 2011-07-18 | 2012-03-21 | 北京天地融科技有限公司 | 一种音频信号转接装置、音频信号传输系统 |
Also Published As
Publication number | Publication date |
---|---|
CA2842254C (en) | 2016-10-18 |
US20150036837A1 (en) | 2015-02-05 |
CN102387429A (zh) | 2012-03-21 |
CN102387429B (zh) | 2014-04-02 |
EP2736265A4 (en) | 2015-02-25 |
EP2736265A1 (en) | 2014-05-28 |
CA2842254A1 (en) | 2013-01-24 |
US9357297B2 (en) | 2016-05-31 |
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