WO2013107271A1 - 一种音频接口适配装置及音频信号接收设备 - Google Patents

一种音频接口适配装置及音频信号接收设备 Download PDF

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Publication number
WO2013107271A1
WO2013107271A1 PCT/CN2012/087889 CN2012087889W WO2013107271A1 WO 2013107271 A1 WO2013107271 A1 WO 2013107271A1 CN 2012087889 W CN2012087889 W CN 2012087889W WO 2013107271 A1 WO2013107271 A1 WO 2013107271A1
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WIPO (PCT)
Prior art keywords
pin
audio
conductive device
unidirectional conductive
processing module
Prior art date
Application number
PCT/CN2012/087889
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English (en)
French (fr)
Inventor
李东声
Original Assignee
天地融科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 天地融科技股份有限公司 filed Critical 天地融科技股份有限公司
Priority to EP12865732.7A priority Critical patent/EP2806655B1/en
Priority to US14/347,433 priority patent/US9179216B2/en
Priority to CA2845107A priority patent/CA2845107C/en
Publication of WO2013107271A1 publication Critical patent/WO2013107271A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • H04R29/001Monitoring arrangements; Testing arrangements for loudspeakers
    • H04R29/002Loudspeaker arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • H04R29/004Monitoring arrangements; Testing arrangements for microphones
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16Sound input; Sound output
    • G06F3/162Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • H04R2420/05Detection of connection of loudspeakers or headphones to amplifiers

Definitions

  • Audio interface adapting device and audio signal receiving device are Audio interface adapting device and audio signal receiving device
  • the present invention relates to the field of electronic technologies, and in particular, to an audio interface adaptation apparatus and an audio signal receiving apparatus. Background technique
  • the audio interface of an existing audio signal transmitting device for example, a mobile communication terminal
  • an audio interface of an audio signal receiving device for example, a headphone
  • Pin 2 is an audio pin, that is, a left channel pin and a right channel pin.
  • pin 3 and pin 4 of different audio interfaces have different functions.
  • Pin 3 is the MIC pin (microphone pin)
  • pin 4 is the GND pin (ground pin)
  • pin 3 For the GND pin (ground pin)
  • pin 4 is the MIC pin (microphone pin) two types of audio interfaces.
  • the audio signal transmitting device for example, a mobile communication terminal
  • the audio signal receiving device for example, a headset, a headset
  • the audio signal transmitting device and the audio signal Not only can the receiving device communicate with the MIC pin of the audio interface, but also the audio pins (left channel pin and right channel pin) of the audio interface can be used for audio signal transmission.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide an audio interface adaptation device (adaptive circuit) and an audio signal receiving device (for example, a headset, a headset, a speaker) provided with the above adaptation device,
  • An audio signal switching device, and other audio signal receiving device that receives and processes an audio signal through an audio pin), when connected to an audio signal transmitting device provided with any type of audio interface, can pass through an audio tube of the audio interface Foot (left channel pin, and / or right channel tube) Feet) Normally receive audio signals.
  • the present invention provides an audio interface adaptation apparatus, the apparatus comprising: an audio interface, the audio interface comprising a pin 1, a pin 2, a pin 3 and a pin 4; an audio pin of the audio interface Connected to the pin 3 through a first unidirectional conductive device, and connected to the pin 4 through a second unidirectional conductive device; the audio pin includes the pin 1, and / or pin 2; One of the pin 3 and the pin 4 serves as a microphone pin and the other serves as a ground pin; the conductive direction of the first unidirectional conductive device is the audio pin to the pin 3; The conductive direction of the second unidirectional conductive device is the audio pin to the pin 4.
  • the pin 1 is sequentially connected to the pin 3 through the first signal processing module, the first unidirectional conductive device, and sequentially passes through the first signal processing module, the second unidirectional conductive device, and the The pin 4 is connected; and/or
  • the pin 2 is sequentially connected to the pin 3 through a second signal processing module, a first unidirectional conductive device, and sequentially passes through the second signal processing module and the second unidirectional conductive device and the tube Pin 4 is connected.
  • the device further includes a first bidirectional conductive element; one end of the first bidirectional conductive element is connected to the pin 3 and the first unidirectional conductive device, and the other end of the first bidirectional conductive element
  • the pin 4 is connected to the second unidirectional conductive device.
  • the first bidirectional conductive element is a resistor.
  • the first unidirectional conductive device is one of the following components: a diode, a triode, and a MOS transistor; and the second unidirectional conductive device is one of the following components: a diode, a triode, and a MOS transistor.
  • the first unidirectional conductive device is a diode D1, a positive pole of D1 is connected to the audio pin, and a negative pole of D1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is a diode D2, the anode of which is connected to the audio pin, and the cathode of D2 is connected to the pin 4.
  • the first unidirectional conductive device is a PNP type transistor T1, an emitter of T1 and the audio The pins are connected, and the base of T1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is a PNP type transistor T2, the emitter of T2 is connected to the audio pin, and the base of T2 is connected to the pin 4.
  • the first unidirectional conductive device is an NPN transistor T1, the base of T1 is connected to the audio pin, and the emitter of T1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is an NPN type transistor T2, the base of which is connected to the audio pin, and the emitter of T2 is connected to the pin 4.
  • the first unidirectional conductive device is an N-channel junction MOS transistor F1, the source of F1 is connected to the audio pin, and the gate of F1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is an N-channel junction MOS transistor F2, the source of which is connected to the audio pin, and the gate of F2 is connected to the pin 4.
  • the first unidirectional conductive device is a P-channel junction MOS transistor F1, the gate of F1 is connected to the audio pin, and the source of F1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is a P-channel junction MOS transistor F2, the gate of F2 is connected to the audio pin, and the source of F2 is connected to the pin 4.
  • the first signal processing module is one of the following: a resistor, a microphone, a transformer, a parallel resistor and a comparator, a parallel resistor and an operational amplifier; and the second signal processing module is one of the following: a resistor, a microphone, Transformers, parallel resistors and comparators, parallel resistors and operational amplifiers.
  • the audio interface is a headphone jack or a headphone jack.
  • first unidirectional conductive device and the second unidirectional conductive device are integrated in a single chip.
  • the present invention also provides an audio signal receiving apparatus, the apparatus comprising: an audio interface adapting apparatus and an audio signal receiving unit, wherein
  • the audio interface adaptation device includes: an audio interface, a first unidirectional conductive device, a second unidirectional conductive device, and a signal processing module; the audio interface includes a pin 1, a pin 2, a pin 3, and a pin 4
  • the pin 1 is connected to the pin 3 through a first unidirectional conductive device and is electrically conductive through the second unidirectional
  • the device is connected to the pin 4;
  • the pin 2 is connected to the pin 3 through a first unidirectional conductive device, and is connected to the pin 4 through a second unidirectional conductive device;
  • the signal processing module includes a first signal processing module, and the pin 1 is sequentially connected to the pin 3 through the first signal processing module and the first unidirectional conductive device, and sequentially passes through the first signal processing module.
  • a second unidirectional conductive device is coupled to the pin 4; and/or
  • the signal processing module includes a second signal processing module, and the pin 2 is sequentially connected to the pin 3 through the second signal processing module and the first unidirectional conductive device, and sequentially passes through the second signal processing module.
  • a second unidirectional conductive device is connected to the pin 4;
  • One of the pin 3 and the pin 4 serves as a microphone pin and the other serves as a ground pin;
  • the conductive direction of the first unidirectional conductive device is the audio pin to the pin 3;
  • the conductive direction of the second unidirectional conductive device is the audio pin to the pin 4;
  • the signal processing module is one or two of the following: a transformer, a secondary coil of the transformer is connected to an audio signal receiving unit; a resistor and a comparator connected in parallel, and an output end of the comparator is connected to the audio signal receiving unit; A resistor and an operational amplifier are connected in parallel, and an output of the operational amplifier is connected to the audio signal receiving unit.
  • the audio pin includes: the pin 1 and the pin 2; the signal processing module includes: a first signal processing module and a second signal processing module; the pin 1 sequentially passes the first signal The processing module and the first unidirectional conductive device are connected to the pin 3; the pin 2 is sequentially connected to the pin 4 through the second signal processing module and the second unidirectional conductive device.
  • the audio interface adapter device further includes a first bidirectional conductive element; one end of the first bidirectional conductive element is connected to the pin 3 and the first unidirectional conductive device, and the first bidirectional conductive element The other end is connected to the pin 4 and the second unidirectional conductive device.
  • the first bidirectional conductive element is a resistor.
  • the first unidirectional conductive device is one of the following components: a diode, a triode, and a MOS transistor; and the second unidirectional conductive device is one of the following components: a diode, a triode, and a MOS transistor.
  • the first unidirectional conductive device is a diode D1, the anode of the D1 is connected to the audio pin, and the cathode of the D1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is a diode D2, the anode of which is connected to the audio pin, and the cathode of D2 is connected to the pin 4.
  • the first unidirectional conductive device is a PNP type transistor T1, the emitter of T1 is connected to the audio pin, and the base of T1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is a PNP type transistor T2, the emitter of T2 is connected to the audio pin, and the base of T2 is connected to the pin 4.
  • the first unidirectional conductive device is an NPN transistor T1, the base of T1 is connected to the audio pin, and the emitter of T1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is an NPN type transistor T2, the base of which is connected to the audio pin, and the emitter of T2 is connected to the pin 4.
  • the first unidirectional conductive device is an N-channel junction MOS transistor F1, the source of F1 is connected to the audio pin, and the gate of F1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is an N-channel junction MOS transistor F2, the source of which is connected to the audio pin, and the gate of F2 is connected to the pin 4.
  • the first unidirectional conductive device is a P-channel junction MOS transistor F1, the gate of F1 is connected to the audio pin, and the source of F1 is connected to the pin 3; and/or
  • the second unidirectional conductive device is a P-channel junction MOS transistor F2, the gate of F2 is connected to the audio pin, and the source of F2 is connected to the pin 4.
  • the audio interface is a headphone jack or a headphone jack.
  • first unidirectional conductive device and the second unidirectional conductive device are integrated in a single chip.
  • the audio signal receiving device can be connected to an audio signal transmitting device provided with any type of audio interface, successfully detected by the audio signal transmitting device, and passed through the audio interface.
  • Audio pin left channel, and / or right channel pin
  • Receive audio signals is normal Receive audio signals.
  • Figure 1 is a schematic view of the principle of the present invention
  • FIG. 2 is a schematic structural view of a first embodiment of an audio interface adaptation apparatus and an audio signal receiving apparatus according to the present invention
  • FIG. 3 is a schematic structural view of a second embodiment of an audio interface adaptation apparatus and an audio signal receiving apparatus according to the present invention.
  • FIG. 4 is a schematic structural view of a third embodiment of an audio interface adaptation apparatus and an audio signal receiving apparatus according to the present invention.
  • FIG. 5 is a schematic structural view of a fourth embodiment of an audio interface adaptation apparatus and an audio signal receiving apparatus according to the present invention.
  • FIG. 6 is a schematic structural view of a fifth embodiment of an audio interface adaptation apparatus and an audio signal receiving apparatus according to the present invention.
  • Figure ⁇ is a schematic structural view of a sixth embodiment of an audio interface adapting apparatus and an audio signal receiving apparatus of the present invention.
  • Figure 8 is a block diagram showing the structure of a seventh embodiment of an audio interface adapting apparatus and an audio signal receiving apparatus of the present invention. detailed description
  • the core of the present invention is to pass an audio pin (pin 1, and/or pin 2) in an audio interface through a device having unidirectional conductive characteristics (hereinafter referred to as a unidirectional conductive device, for example , diodes, transistors, MOS tubes, etc.) are connected to pin 3 and pin 4 of the audio interface, respectively.
  • a unidirectional conductive device for example , diodes, transistors, MOS tubes, etc.
  • a signal processing module may be connected between the audio pin and the unidirectional conductive device, and the signal processing module may be a microphone, a primary coil of a transformer, a resistor, etc., or may include a resistor and a comparator connected in parallel, or include parallel Signal processing module for resistors and op amps.
  • FIG. 2 is a schematic structural view of a first embodiment of an audio interface adaptation device and an audio signal receiving device according to the present invention; in this embodiment, the unidirectional conductive device is a diode, and the signal processing module is a microphone.
  • the audio interface adaptation apparatus in this embodiment includes: an audio interface, a microphone M1, a microphone M2, a diode D1, and a diode D2. among them:
  • the audio interface consists of pin 1, pin 2, pin 3, and pin 4.
  • Pin 1 and pin 2 are audio pins, which can be left channel pin and right channel pin respectively.
  • pin 3 and pin 4 can be used as MIC pin and GND tube respectively. Use the pin as the GND pin and MIC pin, respectively.
  • the audio interface of the present invention can be any four-segment earphone plug or jack, such as a headphone jack or headphone jack having a diameter of 3.5 mm or 2.5 mm.
  • Pin 1 (left channel pin) and pin 2 (right channel pin) of the audio interface are respectively connected to one end of the microphone M1 and the microphone M2, and the other ends of the microphone M1 and the microphone M2 are connected to the diode D1 and the diode D2, respectively.
  • the positive poles are connected, and the negative poles of diode D1 and diode D2 are respectively connected to the audio.
  • Pin 3 and pin 4 are connected.
  • the above diode may be a manifold.
  • the audio signal receiving apparatus of the present invention can be directly inserted into the headphone jack of the audio signal transmitting apparatus (for example, a smartphone); if the audio interface of the present invention is a headphone jack, You can connect the headphones of the smartphone with the adapter cable with the headphone plug on both ends.
  • the audio signal receiving device using the audio interface adapting apparatus of this embodiment may be a headphone, a headset, a speaker, or the like.
  • the audio signal receiving device When the audio signal receiving device provided with the above audio interface adapting device is connected to the audio signal transmitting device, the audio signal receiving device can successfully pass regardless of the type of the pin 3 and the pin 4 of the audio interface of the audio signal transmitting device.
  • the audio signal transmitting device detects and recognizes pin 1 and pin 2 (ie, audio pin), and normally uses pin 1 and pin 2 for audio signal reception and processing.
  • the pin 3 and the pin 4 may be connected by a bidirectional conductive component, such as a resistor R1.
  • the resistance of the bidirectional conductive component may be: 7.7 ⁇ ⁇ 15 ⁇ ⁇ , generally 10 ⁇ ⁇ , 12 ⁇ or 15 ⁇ .
  • the audio signal receiving device of the present invention can successfully detect and recognize the MIC pin through the audio signal transmitting device.
  • a bidirectional conductive member e.g., a resistor
  • FIG. 3 is a schematic structural view of a second embodiment of an audio interface adaptation device and an audio signal receiving device according to the present invention.
  • the unidirectional conductive device is a diode
  • the signal processing modules are respectively a resistor and a transformer Ul.
  • the second embodiment of the present invention differs from the first embodiment in the type of signal processing module.
  • the signal processing module connected to pin 1 (or pin 2) of the audio interface is a transformer;
  • the signal processing module connected to pin 2 (or pin 1) of the audio interface is a resistor R2, and its resistance is The range can be: 4 ⁇ or more, generally 8 ⁇ , 16 ⁇ or 32 ⁇ .
  • the pin 1 of the audio interface is connected to one end of the primary coil of the transformer, and the other end of the primary coil is connected to the anodes of the diode D1 and the diode D2.
  • the audio signal receiving apparatus of the audio interface adapting apparatus of the present embodiment may further include an audio signal receiving unit connected to both ends of the secondary coil of the transformer, and receiving the amplified audio signal for corresponding processing.
  • the pin 1 and the pin 2 of the audio interface can be respectively connected to the transformers U1 and U2; the two ends of the secondary coils of U1 and U2 can be connected to one or two audio signal receiving units respectively.
  • FIG. 4 is a schematic structural view of a third embodiment of an audio interface adaptation device and an audio signal receiving device according to the present invention.
  • the unidirectional conductive device is a diode
  • the signal processing module includes a parallel resistor and a comparator.
  • the third embodiment of the present invention differs from the first embodiment in the type of signal processing module.
  • the signal processing module connected to the pin 1 of the audio interface comprises a parallel resistor R2 and a comparator C1;
  • the signal processing module connected to the pin 2 of the audio interface comprises a resistor R3 and a comparator C2 connected in parallel.
  • Pin 1 is connected to one end of resistor R2 and one input of comparator C1 (eg, positive), and the other end of resistor R2 and the other input of comparator C1 (eg, negative) are connected to the anodes of diode D1 and diode D2. .
  • Pin 2 is connected to one end of resistor R3 and one input of comparator C2 (eg, positive), the other end of resistor R3 and the other input of comparator C2 (eg, negative) and diode D 1 and II
  • comparator C2 eg, positive
  • comparator C2 eg, negative
  • diode D 1 and II The anode of the pole tube D2 is connected.
  • the audio signal receiving apparatus of the audio interface adapting apparatus of this embodiment may further include an audio signal receiving unit, and the audio signal receiving unit is connected to the output ends of the comparators C1 and C2, and receives the audio signal processed by the comparator shaping process. Handle accordingly.
  • the comparator in this embodiment can also be replaced with an operational amplifier.
  • FIG. 5 is a schematic structural view of a fourth embodiment of an audio interface adapting apparatus and an audio signal receiving apparatus according to the present invention.
  • the unidirectional conductive device is a PNP type triode
  • the signal processing module is a microphone.
  • the fourth embodiment of the present invention differs from the first embodiment in that the unidirectional conductive devices are different.
  • the unidirectional conductive devices are: a triode T1 and a triode T2. among them:
  • the emitter of the transistor T1 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the base of the transistor T1 is connected to the pin 3.
  • the emitter of the transistor T2 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the base of the transistor T2 is connected to the pin 4.
  • the collectors of the transistors T1 and T2 can be left floating.
  • the first signal processing module (microphone M1) and the second signal processing module (microphone M2) in this embodiment may also be replaced by: a resistor and a transformer U1, Or replace it with a signal processing module that includes parallel resistors and comparators.
  • FIG. 6 is a schematic structural view of a fifth embodiment of an audio interface adapting apparatus and an audio signal receiving apparatus according to the present invention.
  • the unidirectional conductive device is an NPN type triode
  • the signal processing module is a microphone.
  • the fifth embodiment of the present invention differs from the first embodiment in that the unidirectional conductive devices are different.
  • the unidirectional conductive devices are: a triode T1 and a triode T2. among them:
  • the base of the transistor T1 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the emitter of the transistor T1 is connected to the pin 3.
  • the base of the transistor T2 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the emitter of the diode T2 is connected to the pin 4.
  • the collectors of the transistors T1 and T2 can be left floating.
  • the first signal processing module (microphone M1) and the second signal processing module (microphone M2) in this embodiment may also be replaced by: a resistor and a transformer U1, Or replace it with a signal processing module that includes parallel resistors and comparators.
  • Figure ⁇ is a schematic structural view of a sixth embodiment of the audio interface adaptation device and the audio signal receiving device of the present invention.
  • the unidirectional conductive device is an N-channel junction MOS transistor
  • the signal processing module is a microphone.
  • the sixth embodiment of the present invention differs from the first embodiment in that the unidirectional conductive devices are different.
  • the unidirectional conductive devices are: a MOS transistor F1 and a MOS transistor F2. among them:
  • the source of the MOS transistor F1 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the gate of the MOS transistor F1 is connected to the pin 3.
  • the source of the MOS transistor F2 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the gate of the MOS transistor F2 is connected to the pin 4.
  • the drains of the MOS transistors F1 and F2 can be left floating.
  • the first signal processing module (microphone M1) and the second signal processing module (microphone M2) in this embodiment may also be replaced by: a resistor and a transformer U1. Or replace it with a signal processing module that includes parallel resistors and comparators. Seventh embodiment
  • the unidirectional conductive device is a P-channel junction MOS transistor
  • the signal processing module is a microphone.
  • the seventh embodiment of the present invention differs from the first embodiment in that the unidirectional conductive devices are different.
  • the unidirectional conductive devices are: a MOS transistor F1 and a MOS transistor F2. among them:
  • the gate of the MOS transistor F1 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the source of the MOS transistor F1 is connected to the pin 3.
  • the gate of the MOS transistor F2 is connected to the pin 1 and the pin 2 through the microphone M1 and the microphone M2; the source of the MOS transistor F2 is connected to the pin 4.
  • the drains of the MOS transistors F1 and F2 can be left floating.
  • the first signal processing module (microphone M1) and the second signal processing module (microphone M2) in this embodiment may also be replaced by: a resistor and a transformer U1, Or replace it with a signal processing module that includes parallel resistors and comparators.
  • the above embodiment may have other modifications.
  • the first unidirectional conductive device and the second unidirectional conductive device may be different types of components, for example, the first unidirectional conductive device is a diode.
  • the second unidirectional conductive device is a triode.
  • the pin 1 and the pin 2 of the audio interface are connected to the unidirectional conductive device through the signal processing module.
  • one of the pin 1 or the pin 2 may pass through the signal processing module and the unidirectional conductive device. Connected, the other is directly connected to the unidirectional conductive device.
  • first unidirectional conductive device and the second unidirectional conductive device in the above embodiments may be integrated in a single chip, such as the BAT54 series.
  • 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.

Abstract

本发明公开了一种音频接口适配装置以及设置有上述适配装置的音频信号接收设备,其中,音频接口适配装置包含:音频接口,音频接口包含管脚1,管脚2,管脚3和管脚4;管脚1和/或管脚2作为音频接口的音频管脚;管脚3和管脚4中的一个作为麦克管脚,另一个作为地线管脚;音频接口的音频管脚通过第一单向导电器件与管脚3相连,并通过第二单向导电器件与管脚4相连;第一单向导电器件的导电方向为音频管脚至管脚3;第二单向导电器件的导电方向为音频管脚至管脚4。从而达到了当音频接口适配装置与设置有任何类型的音频接口的音频信号发送设备连接时,都可以通过音频接口的音频管脚(左声道管脚,和/或右声道管脚)正常接收音频信号的效果。

Description

一种音频接口适配装置及音频信号接收设备
技术领域
本发明涉及电子技术领域, 尤其涉及一种音频接口适配装置及音频信号接 收设备。 背景技术
现有的音频信号发送设备(例如, 移动通信终端) 的音频接口 (例如耳机 插孔)和音频信号接收设备(例如, 耳机) 的音频接口一般釆用四段式接口, 其中管脚 1和管脚 2为音频管脚, 即左声道管脚和右声道管脚。 但是, 不同的音 频接口的管脚 3和管脚 4的作用不同, 存在管脚 3为 MIC管脚(麦克管脚), 管脚 4 为 GND管脚(地线管脚), 以及管脚 3为 GND管脚(地线管脚), 管脚 4为 MIC管 脚(麦克管脚) 两种类型的音频接口。
由于存在上述不同类型的音频接口, 当音频信号发送设备(例如, 移动通 信终端) 的音频接口与音频信号接收设备(例如, 耳机、 耳麦) 的音频接口不 匹配时, 音频信号发送设备和音频信号接收设备之间不仅无法通过音频接口的 MIC管脚进行通信, 也无法正常使用音频接口的音频管脚(左声道管脚和右声 道管脚)进行音频信号的传输。 发明内容
本发明所要解决的技术问题是, 克服现有技术的不足,提供一种音频接口 适配装置 (适配电路) 以及设置有上述适配装置的音频信号接收设备(例如, 耳机、 耳麦, 扬声器, 音频信号转接设备, 及其它通过音频管脚接收并处理音 频信号的音频信号接收设备),当其与设置有任何类型的音频接口的音频信号发 送设备连接时, 都可以通过音频接口的音频管脚(左声道管脚, 和 /或右声道管 脚)正常接收音频信号。
为了解决上述问题, 本发明提供一种音频接口适配装置, 该装置包含: 音 频接口, 所述音频接口包含管脚 1 , 管脚 2, 管脚 3和管脚 4; 音频接口的音频管 脚通过第一单向导电器件与所述管脚 3相连,并通过第二单向导电器件与所述管 脚 4相连; 所述音频管脚包括所述管脚 1、 和 /或管脚 2; 所述管脚 3和管脚 4中的 一个作为麦克管脚, 另一个作为地线管脚; 所述第一单向导电器件的导电方向 为所述音频管脚至所述管脚 3;所述第二单向导电器件的导电方向为所述音频管 脚至所述管脚 4。
此外, 所述管脚 1依次通过第一信号处理模块、 所述第一单向导电器件与 所述管脚 3相连,并依次通过所述第一信号处理模块、第二单向导电器件与所述 管脚 4相连; 和 /或
所述管脚 2依次通过第二信号处理模块、 第一单向导电器件与所述管脚 3 相连,并依次通过所述第二信号处理模块和所述第二单向导电器件与所述管脚 4 相连。
此外, 所述装置中还包含第一双向导电元件; 所述第一双向导电元件的一 端与所述管脚 3和第一单向导电器件相连,所述第一双向导电元件的另一端与所 述管脚 4和第二单向导电器件相连。
此外, 所述第一双向导电元件为电阻。
此外, 所述第一单向导电器件为以下元件中的一种: 二极管, 三极管, MOS管; 所述第二单向导电器件为以下元件中的一种: 二极管, 三极管, MOS 管。
此外, 所述第一单向导电器件为二极管 Dl , D1的正极与所述音频管脚相 连, D1的负极与所述管脚 3相连; 和 /或
所述第二单向导电器件为二极管 D2, D2的正极与所述音频管脚相连, D2 的负极与所述管脚 4相连。
此外, 所述第一单向导电器件为 PNP型三极管 Tl , T1的发射极与所述音频 管脚相连, T1的基极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 PNP型三极管 T2, T2的发射极与所述音频管脚相 连, T2的基极与所述管脚 4相连。
此外, 所述第一单向导电器件为 NPN型三极管 Tl , T1的基极与所述音频 管脚相连, T1的发射极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 NPN型三极管 T2, T2的基极与所述音频管脚相 连, T2的发射极与所述管脚 4相连。
此外, 所述第一单向导电器件为 N沟道结型 MOS管 Fl , F1的源极与所述音 频管脚相连, F1的栅极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 N沟道结型 MOS管 F2, F2的源极与所述音频管脚 相连, F2的栅极与所述管脚 4相连。
此外, 所述第一单向导电器件为 P沟道结型 MOS管 Fl , F1的栅极与所述音 频管脚相连, F1的源极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 P沟道结型 MOS管 F2, F2的栅极与所述音频管脚 相连, F2的源极与所述管脚 4相连。
此外, 所述第一信号处理模块为以下一种: 电阻, 麦克风, 变压器, 并联 的电阻和比较器, 并联的电阻和运算放大器; 所述第二信号处理模块为以下一 种: 电阻, 麦克风, 变压器, 并联的电阻和比较器, 并联的电阻和运算放大器。
此外, 所述音频接口为耳机插口或耳机插孔。
此外, 所述第一单向导电器件和所述第二单向导电器件集成在单一芯片 中。
本发明还提供一种音频信号接收设备, 该设备包含: 音频接口适配装置以 及音频信号接收单元, 其中
所述音频接口适配装置包含: 音频接口, 第一单向导电器件, 第二单向导 电器件, 信号处理模块; 所述音频接口包含管脚 1 , 管脚 2, 管脚 3和管脚 4; 所述管脚 1通过第一单向导电器件与所述管脚 3相连,并通过第二单向导电 器件与所述管脚 4相连; 所述管脚 2通过第一单向导电器件与所述管脚 3相连,并 通过第二单向导电器件与所述管脚 4相连; 其中:
所述信号处理模块包括第一信号处理模块, 所述管脚 1依次通过所述第一 信号处理模块、第一单向导电器件与所述管脚 3相连,并依次通过第一信号处理 模块、 第二单向导电器件与所述管脚 4相连; 和 /或
所述信号处理模块包括第二信号处理模块, 所述管脚 2依次通过所述第二 信号处理模块、第一单向导电器件与所述管脚 3相连,并依次通过第二信号处理 模块、 第二单向导电器件与所述管脚 4相连;
所述管脚 3和管脚 4中的一个作为麦克管脚, 另一个作为地线管脚; 所述第一单向导电器件的导电方向为所述音频管脚至所述管脚 3 ; 所述第 二单向导电器件的导电方向为所述音频管脚至所述管脚 4;
所述信号处理模块为以下一种或两种: 变压器, 所述变压器的次级线圈与 音频信号接收单元相连; 并联的电阻和比较器, 所述比较器的输出端与音频信 号接收单元相连; 并联的电阻和运算放大器, 所述运算放大器的输出端与音频 信号接收单元相连。
此外, 所述音频管脚包括: 所述管脚 1和管脚 2; 所述信号处理模块包括: 第一信号处理模块和第二信号处理模块;所述管脚 1依次通过所述第一信号处理 模块和所述第一单向导电器件与所述管脚 3相连; 所述管脚 2依次通过所述第二 信号处理模块和所述第二单向导电器件与所述管脚 4相连。
此外, 所述音频接口适配装置中还包含第一双向导电元件; 所述第一双向 导电元件的一端与所述管脚 3和第一单向导电器件相连,所述第一双向导电元件 的另一端与所述管脚 4和第二单向导电器件相连。
此外, 所述第一双向导电元件为电阻。
此外, 所述第一单向导电器件为以下元件中的一种: 二极管, 三极管, MOS管; 所述第二单向导电器件为以下元件中的一种: 二极管, 三极管, MOS 管。 此外, 所述第一单向导电器件为二极管 Dl , D1的正极与所述音频管脚相 连, D1的负极与所述管脚 3相连; 和 /或
所述第二单向导电器件为二极管 D2, D2的正极与所述音频管脚相连, D2 的负极与所述管脚 4相连。
此外, 所述第一单向导电器件为 PNP型三极管 Tl , T1的发射极与所述音频 管脚相连, T1的基极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 PNP型三极管 T2, T2的发射极与所述音频管脚相 连, T2的基极与所述管脚 4相连。
此外, 所述第一单向导电器件为 NPN型三极管 Tl , T1的基极与所述音频 管脚相连, T1的发射极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 NPN型三极管 T2, T2的基极与所述音频管脚相 连, T2的发射极与所述管脚 4相连。
此外, 所述第一单向导电器件为 N沟道结型 MOS管 Fl , F1的源极与所述音 频管脚相连, F1的栅极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 N沟道结型 MOS管 F2, F2的源极与所述音频管脚 相连, F2的栅极与所述管脚 4相连。
此外, 所述第一单向导电器件为 P沟道结型 MOS管 Fl , F1的栅极与所述音 频管脚相连, F1的源极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 P沟道结型 MOS管 F2, F2的栅极与所述音频管脚 相连, F2的源极与所述管脚 4相连。
此外, 所述音频接口为耳机插口或耳机插孔。
此外, 所述第一单向导电器件和所述第二单向导电器件集成在单一芯片 中。
综上所述, 釆用本发明的音频接口适配装置, 音频信号接收设备可以与设 置有任何类型的音频接口的音频信号发送设备连接, 成功通过音频信号发送设 备进行的检测, 并通过音频接口的音频管脚(左声道, 和 /或右声道管脚)正常 接收音频信号。 附围说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例描述中所需 要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的 一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动的前提下, 还可以根据这些附图获得其他附图。
图 1是本发明的原理示意图;
图 2为本发明音频接口适配装置和音频信号接收设备第一实施例的结构示 意图;
图 3为本发明音频接口适配装置和音频信号接收设备第二实施例的结构示 意图;
图 4为本发明音频接口适配装置和音频信号接收设备第三实施例的结构示 意图;
图 5为本发明音频接口适配装置和音频信号接收设备第四实施例的结构示 意图;
图 6为本发明音频接口适配装置和音频信号接收设备第五实施例的结构示 意图;
图 Ί为本发明音频接口适配装置和音频信号接收设备第六实施例的结构示 意图;
图 8为本发明音频接口适配装置和音频信号接收设备第七实施例的结构示 意图。 具体实施方式
下面结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部 的实施例。 基于本发明的实施例, 本领域普通技术人员在没有做出创造性劳动 前提下所获得的所有其他实施例, 都属于本发明的保护范围。
如图 1所示, 本发明的核心是, 将音频接口中的音频管脚(管脚 1 , 和 /或 管脚 2 )通过具有单向导电特性的器件(以下称为单向导电器件, 例如, 二极 管、 三极管, MOS管等)分别与音频接口的管脚 3和管脚 4相连。
此外, 在音频管脚和单向导电器件之间可串联信号处理模块, 上述信号处 理模块可以是麦克风、 变压器的初级线圈、 电阻等, 也可以是包括并联的电阻 和比较器, 或包括并联的电阻和运算放大器的信号处理模块。
下面将结合附图和实施例对本发明进行详细描述。
第一实施例
图 2为本发明音频接口适配装置和音频信号接收设备第一实施例的结构示 意图; 本实施例中, 单向导电器件为二极管, 信号处理模块为麦克风。
如图 2所示, 本实施例中音频接口适配装置包含: 音频接口, 麦克风 Ml , 麦克风 M2, 二极管 D1和二极管 D2。 其中:
音频接口包含管脚 1、 管脚 2、 管脚 3和管脚 4。 管脚 1和管脚 2为音频管 脚, 可以分别为左声道管脚和右声道管脚; 根据不同的音频接口标准, 管脚 3 和管脚 4可以分别作为 MIC管脚和 GND管脚, 或分别作为 GND管脚和 MIC 管脚使用。
本发明的音频接口可以是任一款四段式耳机插头或者插孔, 例如直径为 3.5mm或 2.5mm的耳机插头或者耳机插孔。
音频接口的管脚 1 (左声道管脚)和管脚 2 (右声道管脚)分别与麦克风 Ml和麦克风 M2的一端相连, 麦克风 Ml和麦克风 M2的另一端都与二极管 D1和二极管 D2的正极相连, 二极管 D1和二极管 D2的负极分别与音频接口 的管脚 3和管脚 4相连。
上述二极管可以是锗管。
如果本发明的音频接口为耳机插头, 则可直接将本发明的音频信号接收设 备插入音频信号发送设备(例如, 智能手机) 的耳机插孔中; 如果本发明的音 频接口为耳机插孔, 则可以釆用两端都是耳机插头的转接线连接智能手机的耳 机插孑
釆用本实施例音频接口适配装置的音频信号接收设备可以是耳机、 耳麦、 扬声器等。
当设置有上述音频接口适配装置的音频信号接收设备与音频信号发送设备 相连时, 无论音频信号发送设备的音频接口的管脚 3和管脚 4是什么类型, 音 频信号接收设备都可以成功通过音频信号发送设备针对管脚 1和管脚 2 (即音 频管脚)进行的检测和识别, 并正常使用管脚 1和管脚 2进行音频信号的接收 和处理。
可选地, 本实施例中, 管脚 3和管脚 4之间可以通过双向导电元件, 例如 电阻 R1相连, 上述双向导电元件的阻值范围可以为: 7.7ΚΩ〜15ΚΩ , —般釆 用 10ΚΩ、 12 ΚΩ或 15 ΚΩ。
如果管脚 3和管脚 4之间通过双向导电元件(例如, 电阻)相连, 本发明 的音频信号接收设备可以成功通过音频信号发送设备针对 MIC 管脚的检测和 识别。
第二实施例
图 3为本发明音频接口适配装置和音频信号接收设备第二实施例的结构示 意图; 本实施例中, 单向导电器件为二极管, 信号处理模块分别为电阻和变压 器 Ul。
本发明第二实施例与第一实施例的区别在于信号处理模块的类型不同。 本 实施例中, 与音频接口的管脚 1 (或管脚 2 )相连的信号处理模块为变压器; 与 音频接口的管脚 2 (或管脚 1 )相连的信号处理模块为电阻 R2, 其阻值范围可 以为: 4Ω以上, 一般釆用 8Ω、 16Ω或 32Ω。
音频接口的管脚 1与变压器的初级线圈的一端相连, 该初级线圈的另一端 与二极管 D1和二极管 D2的正极相连。
釆用本实施例音频接口适配装置的音频信号接收设备中还可以包含音频信 号接收单元, 该音频信号接收单元与变压器次级线圈的两端相连, 接收经过放 大的音频信号后进行相应处理。
当然, 本实施例中音频接口的管脚 1和管脚 2都可以分别与变压器 U1和 U2相连; U1和 U2的次级线圈的两端可以与一个或分别与两个音频信号接收 单元相连。
第三实施例
图 4为本发明音频接口适配装置和音频信号接收设备第三实施例的结构示 意图; 本实施例中, 单向导电器件为二极管, 信号处理模块中包含并联的电阻 和比较器。
本发明第三实施例与第一实施例的区别在于信号处理模块的类型不同。 本 实施例中, 与音频接口的管脚 1相连的信号处理模块包含并联的电阻 R2和比 较器 C1 ; 与音频接口的管脚 2相连的信号处理模块包含并联的电阻 R3和比较 器 C2。
管脚 1与电阻 R2的一端以及比较器 C1的一个输入端(例如,正极)相连, 电阻 R2的另一端以及比较 C1的另一输入端 (例如, 负极)与二极管 D1和二 极管 D2的正极相连。
管脚 2与电阻 R3的一端以及比较器 C2的一个输入端(例如,正极)相连, 电阻 R3的另一端以及比较 C2的另一输入端 (例如, 负极)与二极管 D 1和二 极管 D2的正极相连。
釆用本实施例音频接口适配装置的音频信号接收设备中还可以包含音频信 号接收单元, 该音频信号接收单元与比较器 C1和 C2的输出端相连,接收经过 比较器整形处理的音频信号后进行相应处理。
此外, 本实施例中的比较器还可以替换为运算放大器。
第四实施例
图 5为本发明音频接口适配装置和音频信号接收设备第四实施例的结构示 意图; 本实施例中, 单向导电器件为 PNP型三极管, 信号处理模块为麦克风。
本发明第四实施例与第一实施例的区别在于单向导电器件不同。 本实施例 中, 单向导电器件为: 三极管 T1和三极管 T2。 其中:
三极管 T1的发射极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连; 三极管 T1的基极与管脚 3相连。
三极管 T2的发射极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连; 三极管 T2的基极与管脚 4相连。
三极管 T1和 T2的集电极可以处于悬空状态。
此外, 与本发明第二实施例和第三实施例类似, 本实施例中的第一信号处 理模块(麦克风 Ml )和第二信号处理模块(麦克风 M2 )也可以替换为: 电阻 和变压器 U1, 或替换为包含并联的电阻和比较器的信号处理模块等。 第五实施例
图 6为本发明音频接口适配装置和音频信号接收设备第五实施例的结构示 意图; 本实施例中, 单向导电器件为 NPN型三极管, 信号处理模块为麦克风。
本发明第五实施例与第一实施例的区别在于单向导电器件不同。 本实施例 中, 单向导电器件为: 三极管 T1和三极管 T2。 其中:
三极管 T1的基极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连;三 极管 T1的发射极与管脚 3相连。
三极管 T2的基极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连;三 极管 T2的发射极与管脚 4相连。
三极管 T1和 T2的集电极可以处于悬空状态。
此外, 与本发明第二实施例和第三实施例类似, 本实施例中的第一信号处 理模块(麦克风 Ml )和第二信号处理模块(麦克风 M2 )也可以替换为: 电阻 和变压器 U1, 或替换为包含并联的电阻和比较器的信号处理模块等。
第六实施例
图 Ί为本发明音频接口适配装置和音频信号接收设备第六实施例的结构示 意图; 本实施例中, 单向导电器件为 N沟道结型 MOS管, 信号处理模块为麦 克风。
本发明第六实施例与第一实施例的区别在于单向导电器件不同。 本实施例 中, 单向导电器件为: MOS管 F1和 MOS管 F2。 其中:
MOS管 F1的源极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连; MOS管 F1的栅极与管脚 3相连。
MOS管 F2的源极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连; MOS管 F2的栅极与管脚 4相连。
MOS管 F1和 F2的漏极可以处于悬空状态。
此外, 与本发明第二实施例和第三实施例类似, 本实施例中的第一信号处 理模块(麦克风 Ml )和第二信号处理模块(麦克风 M2 )也可以替换为: 电阻 和变压器 U1 , 或替换为包含并联的电阻和比较器的信号处理模块等。 第七实施例
图 8为本发明音频接口适配装置和音频信号接收设备第七实施例的结构示 意图; 本实施例中, 单向导电器件为 P沟道结型 MOS管, 信号处理模块为麦 克风。
本发明第七实施例与第一实施例的区别在于单向导电器件不同。 本实施例 中, 单向导电器件为: MOS管 F1和 MOS管 F2。 其中:
MOS管 F1的栅极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连; MOS管 F1的源极与管脚 3相连。
MOS管 F2的栅极通过麦克风 Ml和麦克风 M2与管脚 1和管脚 2相连; MOS管 F2的源极与管脚 4相连。
MOS管 F1和 F2的漏极可以处于悬空状态。
此外, 与本发明第二实施例和第三实施例类似, 本实施例中的第一信号处 理模块(麦克风 Ml )和第二信号处理模块(麦克风 M2 )也可以替换为: 电阻 和变压器 U1, 或替换为包含并联的电阻和比较器的信号处理模块等。
根据本发明的基本原理, 上述实施例还可以有其它变形方式, 例如: 第一单向导电器件和第二单向导电器件可以是不同类型的元器件, 例如, 第一单向导电器件为二极管, 第二单向导电器件为三极管。
上述实施例中音频接口的管脚 1和管脚 2均通过信号处理模块与单向导电 器件相连, 当然, 还可以是管脚 1或管脚 2中的一个通过信号处理模块与单向 导电器件相连, 另一个直接与单向导电器件相连。
当然, 上述实施例中的第一单向导电器件和第二单向导电器件可以集成在 单一芯片中, 例如 BAT54系列。 以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明披露的技术范围内, 可轻易 想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应该以权利要求书的保护范围为准。

Claims

权利要求书
1、 一种音频接口适配装置, 该装置包含: 音频接口, 所述音频接口包含管 脚 1 , 管脚 2, 管脚 3和管脚 4; 其特征在于,
所述管脚 1和 /或管脚 2作为音频接口的音频管脚;
所述管脚 3和管脚 4中的一个作为麦克管脚, 另一个作为地线管脚; 所述音频管脚通过第一单向导电器件与所述管脚 3相连, 并通过第二单向 导电器件与所述管脚 4相连;
所述第一单向导电器件的导电方向为所述音频管脚至所述管脚 3; 所述第 二单向导电器件的导电方向为所述音频管脚至所述管脚 4。
2、 如权利要求 1所述的装置, 其特征在于,
所述管脚 1依次通过第一信号处理模块、 所述第一单向导电器件与所述管 脚 3相连, 以及依次通过所述第一信号处理模块、 第二单向导电器件与所述管 脚 4相连; 和 /或
所述管脚 2依次通过第二信号处理模块、 第一单向导电器件与所述管脚 3 相连, 以及依次通过所述第二信号处理模块和所述第二单向导电器件与所述管 脚 4相连。
3、 如权利要求 1或 2所述的装置, 其特征在于,
所述装置中还包含第一双向导电元件;
所述第一双向导电元件的一端与所述管脚 3和第一单向导电器件相连, 所 述第一双向导电元件的另一端与所述管脚 4和第二单向导电器件相连。
4、 如权利要求 1至 3中任一项所述的装置, 其特征在于,
所述第一双向导电元件为电阻。
5、 如权利要求 1至 4中任一项所述的装置, 其特征在于, 所述第一单向导电器件为以下元件中的一种: 二极管, 三极管, MOS管; 所述第二单向导电器件为以下元件中的一种: 二极管, 三极管, MOS管。
6、 如权利要求 1至 5中任一项所述的装置, 其特征在于,
所述第一单向导电器件为二极管 Dl , D1的正极与所述音频管脚相连, D1 的负极与所述管脚 3相连; 和 /或
所述第二单向导电器件为二极管 D2, D2的正极与所述音频管脚相连, D2 的负极与所述管脚 4相连。
7、 如权利要求 1至 6中任一项所述的装置, 其特征在于,
所述第一单向导电器件为 PNP型三极管 Tl , T1的发射极与所述音频管脚 相连, T1的基极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 PNP型三极管 T2, T2的发射极与所述音频管脚 相连, T2的基极与所述管脚 4相连。
8、 如权利要求 1至 Ί中任一项所述的装置, 其特征在于,
所述第一单向导电器件为 NPN型三极管 Tl , T1的基极与所述音频管脚相 连, T1的发射极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 NPN型三极管 T2, T2的基极与所述音频管脚相 连, T2的发射极与所述管脚 4相连。
9、 如权利要求 1至 8中任一项所述的装置, 其特征在于,
所述第一单向导电器件为 N沟道结型 MOS管 F1 , F1的源极与所述音频管 脚相连, F1的栅极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 N沟道结型 MOS管 F2, F2的源极与所述音频管 脚相连, F2的栅极与所述管脚 4相连。
10、 如权利要求 1至 9中任一项所述的装置, 其特征在于,
所述第一单向导电器件为 P沟道结型 MOS管 Fl , F1的栅极与所述音频管 脚相连, F 1的源极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 P沟道结型 MOS管 F2, F2的栅极与所述音频管 脚相连, F2的源极与所述管脚 4相连。
11、 如权利要求 1至 10中任一项所述的装置, 其特征在于,
所述第一信号处理模块为以下一种: 电阻, 麦克风, 变压器, 并联的电阻 和比较器, 并联的电阻和运算放大器;
所述第二信号处理模块为以下一种: 电阻, 麦克风, 变压器, 并联的电阻 和比较器, 并联的电阻和运算放大器。
12、 如权利要求 1至 11中任一项所述的装置, 其特征在于,
所述音频接口为耳机插口或耳机插孔。
13、如权利要求 1至 12中任一项所述的装置, 其特征在于, 所述第一单向 导电器件和所述第二单向导电器件集成在单一芯片中。
14、 一种音频信号接收设备, 其特征在于, 该设备包含: 音频接口适配装 置以及音频信号接收单元, 其中
所述音频接口适配装置包含: 音频接口, 第一单向导电器件, 第二单向导 电器件, 信号处理模块; 所述音频接口包含管脚 1 , 管脚 2, 管脚 3和管脚 4; 所述管脚 1通过第一单向导电器件与所述管脚 3相连, 并通过第二单向导 电器件与所述管脚 4相连; 所述管脚 2通过第一单向导电器件与所述管脚 3相 连, 并通过第二单向导电器件与所述管脚 4相连; 其中:
所述信号处理模块包括第一信号处理模块, 所述管脚 1依次通过所述第一 信号处理模块、 第一单向导电器件与所述管脚 3相连, 并依次通过第一信号处 理模块、 第二单向导电器件与所述管脚 4相连; 和 /或
所述信号处理模块包括第二信号处理模块, 所述管脚 2依次通过所述第二 信号处理模块、 第一单向导电器件与所述管脚 3相连, 并依次通过第二信号处 理模块、 第二单向导电器件与所述管脚 4相连;
所述管脚 3和管脚 4中的一个作为麦克管脚, 另一个作为地线管脚; 所述管脚 1和 /或管脚 2作为音频管脚;
所述第一单向导电器件的导电方向为所述音频管脚至所述管脚 3; 所述第 二单向导电器件的导电方向为所述音频管脚至所述管脚 4;
所述信号处理模块为以下一种或两种: 变压器, 所述变压器的次级线圈与 音频信号接收单元相连; 并联的电阻和比较器, 所述比较器的输出端与音频信 号接收单元相连; 并联的电阻和运算放大器, 所述运算放大器的输出端与音频 信号接收单元相连。
15、 如权利要求 14所述的设备, 其特征在于,
所述音频管脚包括: 所述管脚 1和管脚 2;
所述信号处理模块包括: 第一信号处理模块和第二信号处理模块; 所述管脚 1依次通过所述第一信号处理模块和所述第一单向导电器件与所 述管脚 3相连;
所述管脚 2依次通过所述第二信号处理模块和所述第二单向导电器件与所 述管脚 4相连。
16、 如权利要求 14或 15所述的设备, 其特征在于,
所述音频接口适配装置中还包含第一双向导电元件;
所述第一双向导电元件的一端与所述管脚 3和第一单向导电器件相连, 所 述第一双向导电元件的另一端与所述管脚 4和第二单向导电器件相连。
17、 如权利要求 14至 16中任一项所述的设备, 其特征在于,
所述第一双向导电元件为电阻。
18、 如权利要求 14至 17中任一项所述的设备, 其特征在于,
所述第一单向导电器件为以下元件中的一种: 二极管, 三极管, MOS管; 所述第二单向导电器件为以下元件中的一种: 二极管, 三极管, MOS管。
19、 如权利要求 14至 18中任一项所述的设备, 其特征在于,
所述第一单向导电器件为二极管 Dl , D1的正极与所述音频管脚相连, D1 的负极与所述管脚 3相连; 和 /或
所述第二单向导电器件为二极管 D2, D2的正极与所述音频管脚相连, D2 的负极与所述管脚 4相连。
20、 如权利要求 14至 19中任一项所述的设备, 其特征在于,
所述第一单向导电器件为 PNP型三极管 Tl , T1的发射极与所述音频管脚 相连, T1的基极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 PNP型三极管 T2, T2的发射极与所述音频管脚 相连, T2的基极与所述管脚 4相连。
21、 如权利要求 14至 20中任一项所述的设备, 其特征在于,
所述第一单向导电器件为 NPN型三极管 Tl , T1的基极与所述音频管脚相 连, T1的发射极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 NPN型三极管 T2, T2的基极与所述音频管脚相 连, T2的发射极与所述管脚 4相连。
22、 如权利要求 14至 21中任一项所述的设备, 其特征在于,
所述第一单向导电器件为 N沟道结型 MOS管 F1 , F1的源极与所述音频管 脚相连, F1的栅极与所述管脚 3相连; 和 /或
所述第二单向导电器件为 N沟道结型 MOS管 F2, F2的源极与所述音频管 脚相连, F2的栅极与所述管脚 4相连。
23、 如权利要求 14至 22中任一项所述的设备, 其特征在于,
所述第一单向导电器件为 P沟道结型 MOS管 Fl , F1的栅极与所述音频管 脚相连, F1的源极与所述管脚 3相连; 和 /或 所述第二单向导电器件为 P沟道结型 MOS管 F2, F2的栅极与所述音频管 脚相连, F2的源极与所述管脚 4相连。
24、 如权利要求 14至 23中任一项所述的设备, 其特征在于,
所述音频接口为耳机插口或耳机插孔。
25、 如权利要求 14至 24中所述的设备, 其特征在于, 所述第一单向导电 器件和所述第二单向导电器件集成在单一芯片中。
PCT/CN2012/087889 2012-01-18 2012-12-28 一种音频接口适配装置及音频信号接收设备 WO2013107271A1 (zh)

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CN103220598A (zh) 2013-07-24
CA2845107C (en) 2016-10-04
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EP2806655A1 (en) 2014-11-26

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