CN106454594A - Earphone - Google Patents

Earphone Download PDF

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Publication number
CN106454594A
CN106454594A CN201610957749.4A CN201610957749A CN106454594A CN 106454594 A CN106454594 A CN 106454594A CN 201610957749 A CN201610957749 A CN 201610957749A CN 106454594 A CN106454594 A CN 106454594A
Authority
CN
China
Prior art keywords
signal
earphone
audio
controller
interface
Prior art date
Application number
CN201610957749.4A
Other languages
Chinese (zh)
Inventor
张文川
廖述斌
潘财盛
金丰
Original Assignee
立讯精密工业股份有限公司
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 立讯精密工业股份有限公司 filed Critical 立讯精密工业股份有限公司
Priority to CN201610957749.4A priority Critical patent/CN106454594A/en
Publication of CN106454594A publication Critical patent/CN106454594A/en

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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
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041Mechanical or electronic switches, or control elements
    • 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
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • H04R2420/03Connection circuits to selectively connect loudspeakers or headphones to amplifiers

Abstract

The invention provides an earphone, comprising a USB Type-C interface which is used for receiving a signal transmitted by an electronic device; a controller which is connected with the USB Type-C interface and is used for identifying a type of the signal received by the USB Type-C interface; a signal transmission line which is connected with the USB Type-C interface, wherein the signal transmission line comprises a playing unit, an audio decoding unit which is used for converting a digital audio signal into an analog audio signal, and a signal amplifier unit which is used for amplifying the analog audio signal; and a distribution unit which is located between the USB Type-C interface and the signal transmission line, is connected with the controller and is used for gating the signal transmission line according to the type of the signal identified by the controller, wherein at least two of the controller, the distribution unit, the audio decoding unit and the signal amplification unit are integrated in the same circuit. The earphone provided by the invention supports playing of the analog audio signal and the digital audio signal, the integration degree of the internal circuits is high, the production process is simple, and the earphone is beautiful and is convenient for carrying.

Description

A kind of earphone

Technical field

The present invention relates to field of audio devices, more particularly to a kind of utilization USB Type-C interface, both artistic and practical earphone.

Background technology

New standard USB Type-C interface with USB (universal serial bus) (Universal Serial Bus, USB) interface Emerge, this with ultra-thin, at a high speed, powerful power supply capacity, support positive anti-plug, integrate several functions such as power supply, data transfer And video frequency output, the new interface of the multifrequency nature such as backward compatibility, it is expected to replace other interfaces.

At present conventional using USB Type-C interface, optionally carry out DAB, analogue audio frequency switching and play Earphone, as its internal circuit module is more, cause manufacturing process numerous and diverse, cost increases, and volume is also than larger, therefore practical Property, aesthetic property, portability deficiency.

Content of the invention

Technical problem solved by the invention is to provide a kind of earphone, and which can solve the ear using USB Type-C interface Machine practicality, aesthetic property, the problem of portability deficiency.

For solving above-mentioned technical problem, the invention provides a kind of earphone, including:

USB Type-C interface, for receiving the device signal of electronic equipment transmission, the device signal includes that DAB is believed Number or simulated audio signal;

Controller, is connected with the USB Type-C interface, for recognizing the equipment of the USB Type-C interface The type of signal;

Signal transmission line, is connected with the USB Type-C interface, includes broadcast unit, is used on the signal transmission line The digital audio and video signals are converted to the audio decoding unit of simulated audio signal, for amplifying the simulated audio signal Signal amplification unit;

Dividing cell, is connected between the USB Type-C interface and signal transmission line and with the controller, is used for The type of the signal for being identified according to the controller is gating the signal transmission line;

Wherein, the controller, dividing cell, audio decoding unit, in signal amplification unit at least two be integrated in same In circuit.

Further, the earphone also includes to connect the built-in audio bus of the controller, and the built-in audio is total Line is used for transmitting audio signal.

Further, the built-in audio bus is integrated in same circuit with the controller.

Further, the earphone also includes that the audio frequency between the broadcast unit and signal amplification unit amplifies Device, the audio frequency amplifier is used for the non-linear audio distortion that cause of the suppression by forward path.

Further, the earphone also includes:

Mike, for receiving acoustical signal;And

Audio coding unit, its described controller of connection and mike, for being converted into numeral input letter by the acoustical signal Number, to send the electronic equipment to by the controller.

Further, the audio coding unit is put with the controller, dividing cell, audio decoding unit, signal At least one of big unit is integrated in same circuit.

Further, the device signal also includes control signal, and the controller receives the control signal base Control the earphone in the control signal.

Compared with prior art, the earphone of the present invention adopts USB Type-C interface, can save 3.5mm audio interface, Support to play simulated audio signal, digital audio and video signals, and internal circuit integrated level height, small volume, manufacturing process is simple, tool There are aesthetic property and portability;Microphone input signal is supported, with more preferable compatibility;The positive anti-plug of earphone is supported, easy to use.

Description of the drawings

Fig. 1 is the schematic diagram of the earphone described in the embodiment of the present invention one;

Fig. 2 is the schematic diagram of the earphone described in the embodiment of the present invention one;

Fig. 3 is the schematic diagram of the earphone described in the embodiment of the present invention two;

Fig. 4 is the schematic diagram of the earphone described in the embodiment of the present invention three;

Fig. 5 is the schematic diagram of the earphone described in the embodiment of the present invention four;

Fig. 6 is the schematic diagram of the earphone described in the embodiment of the present invention five;

Fig. 7 is the circuit diagram of the earphone described in the embodiment of the present invention four;

Fig. 8 is the schematic diagram of the earphone described in the embodiment of the present invention six.

Specific embodiment

Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio Represent same or similar element or the element with same or like function to same or similar label eventually.Below by ginseng The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.

Embodiment one:

As shown in Fig. 1,2,7, a kind of earphone, including:USB Type-C interface 10, controller 20, dividing cell 30, audio decoder Unit 40, signal amplification unit 50, broadcast unit 60, signal transmission line, wherein, audio decoding unit 40 amplifies list with signal Unit 50 is integrated in same circuit.

Specifically:USB Type-C interface 10 is used for receiving the device signal of electronic equipment transmission, and device signal includes number Word audio signal or simulated audio signal.Device signal can also include control signal, and electronic equipment is connect by USB Type-C Mouth 10 transmits control signal to controller 20 and realizes control of the electronic equipment to earphone.

Controller 20 with USB Type-C interface 10 CC1 end, CC2 end be connected, the receiving device signal for recognizing Type, controller 20 can be differential(PD)Controller.Derivation control action in derivative controller, can reflect input equipment The variation tendency of signal, produces effective early stage corrective signal, to increase the damping degree of system, so as to improve system Stability.

Dividing cell 30 is connected Wei Yu USB Type-C interface 10 and signal transmission line between and with controller 20, and which is even D+ end, D- end or L end, the R end of USB Type-C interface is connect, wherein, D+ end, D- end are that Digital Audio Transmission end, L end, R end are Analogue audio frequency transmission ends, dividing cell 30 is used for the type of the device signal for being identified according to controller 20 and passes come gating signal Defeated circuit.Signal transmission line includes Digital Audio Transmission circuit 42 and analogue audio frequency transmission line 41.

Audio decoding unit 40 is located on Digital Audio Transmission circuit 42, for digital audio and video signals are converted to analog audio Frequency signal.

Signal amplification unit 50 is located on signal transmission line, for amplified analog audio signal.

If controller 20 confirms that the device signal for receiving is simulated audio signal, simulated audio signal is directly transmitted To broadcast unit 60.

If controller 20 confirms that the device signal for receiving is digital audio and video signals, digital audio and video signals are passed through audio frequency Decoding unit 40 is converted to simulated audio signal, then the simulated audio signal after conversion is transferred to broadcast unit 60.

Broadcast unit 60 can be loudspeaker.

Audio decoding unit 40 is integrated in same circuit with signal amplification unit 50, that is, by audio decoding unit 40 It is integrated on an integrated circuit with signal amplification unit 50.

A kind of earphone of above-described embodiment uses USB Type-C interface 10, and concrete form can be USB Type-C Male end, which can be used cooperatively with corresponding USB Type-C female end grafting, and the USB Type-C interface 10 of earphone is inserted electricity After sub- equipment, controller therein 20 can be adopted between the controller with matching that includes in USB Type-C female end Communications protocol is matched.

If successful matching, earphone works, and can transmit audio signal and utilization includes between electronic equipment and earphone The electronic equipment of USB Type-C female end provides working power and to earphone transmission audio frequency to earphone, without the need for additional power source, That is, earphone can be powered using USB Type-C interface 10, you can to obtain the electricity of 5V by USB Type-C interface 10 Source is input into.And earphone can be utilized to electronic equipment control command, for example, carried out telephone receiving, phone and hang up, also The application program (APP) that can pass through on electronic equipment controls earpiece volume, volume equilibrium etc..

If pairing failure, then it represents that earphone is not compatible with electronic equipment, then earphone does not work.

USB Type-C interface headphones tonequality is good;Earphone can achieve high-order function, low cost, tailored appearance without the need for battery Compact;The positive anti-plug of earphone is supported, easy to use, Consumer's Experience is good.The earphone has aesthetic property and portability.Earphone is supported to play Simulated audio signal, digital audio and video signals, support the positive anti-plug of earphone, easy to use;Internal circuit integrated level is high, small volume, Manufacturing process is simple, with aesthetic property and portability.

Embodiment two:

As shown in figure 3, compared to the earphone in embodiment one, the controller 20, dividing cell inside the earphone in embodiment two 30th, audio decoding unit 40, signal amplification unit 50 are all integrated in same circuit, that is, this four parts are all collected Become on an integrated circuit, so as to volume is further reduced, reduce operation so that earphone is more aesthetically pleasing, portable, save Cost.

Embodiment three:

As shown in figure 4, compared to the earphone in embodiment one, built-in audio bus 70 can also be included in embodiment three (Inter-IC Sound Bus, I2S), and built-in audio bus 70 is integrated in same circuit with controller 20, that is, will Audio-frequency bus 70 are integrated on an integrated circuit with controller 20.

Built-in audio bus 70 connects controller 20, and for transmitting audio signal, built-in audio bus 70 is specialized in audio frequency Data transfer between equipment, is widely used in various multimedia systems.Built-in audio bus 70 is employed along independent wire Transmission clock and the design of data signal, by separating data with clock signal, it is to avoid because of the distortion that the time difference induces, be use Family saves the expense of the professional equipment for buying opposing audio jitter.At present on the market also not by controller 20 and built-in audio The integrated precedent of bus 70, discrete both do not possess that manufacturing process is simple, volume-diminished the advantages of.

Example IV:

As shown in Fig. 5,7, compared to the earphone in embodiment one, the earphone in the present embodiment four can also include:Mike 80 With audio coding unit 90.

Specifically:Mike 80 is used for receiving acoustical signal.

Audio coding unit 90 connects controller 20, mike 80 respectively, for acoustical signal is converted into numeral input Signal, audio coding unit 90 is also connected with the auxiliary signal port SUB1 end in USB Type-C interface, SUB2 end.Through control After device 20 is communicated with USB Type-C interface protocol, electronic equipment is sent to by SUB1 end, SUB2 end, reaches acoustical signal defeated The purpose for entering.

As the sound that the mankind send is analogue signal, the signal of telecommunication is transformed into by the pickup of mike 80, then is compiled by audio frequency The code conversion of unit 90 becomes digital input signals, in addition, digital input signals can be audio content (for example being carried out by earphone Voice-frequency telephony), or control command (for example electronic equipment being operated based on speech recognition technology by earphone).Example IV In earphone with the addition of microphone input audio function, with more preferable compatibility, easy to use, Consumer's Experience is good, expands The range of the present invention.

Embodiment five:

As shown in fig. 6, compared to the earphone in example IV, in the earphone in the present embodiment five, audio coding unit 90 and control Device processed 20, dividing cell 30, audio decoding unit 40, signal amplification unit 50 5 are integrated in same circuit, bigger collection Degree of one-tenth causes that earphone manufacturing process is simple, volume-diminished the advantages of, will be integrated after integrated circuit be respectively connecting to USB Type- C interface 10, broadcast unit 60, mike 80 can achieve.

Embodiment six:

As shown in figure 8, compared to the earphone in embodiment one, the earphone in the present embodiment six can also include audio frequency amplifier 100.

Audio frequency amplifier 100 is located between broadcast unit 60 and signal amplification unit 50, for suppression by forward path The non-linear audio distortion for causing.The purpose of audio frequency amplifier 100 is to rebuild the sound of input on the output element for producing sound Frequency signal, audio signal volume and power stage will be preferable -- and strictly according to the facts, effective and distortion is low, lifts the tonequality of earphone.

The technical scheme adopted including but not limited to above-described embodiment one to six by the present invention, it is also possible in this embodiment Add equalizer on the basis of earphone, noise reduction unit etc. lifts the unit of earphone tonequality.

The above, be only highly preferred embodiment of the present invention, not makees any pro forma restriction to the present invention, appoints What those of ordinary skill in the art, without departing under technical solution of the present invention ambit, using in the method for the disclosure above Holding and many possible variations are made to technical solution of the present invention and is modified, belongs to protective scope of the claims.

Claims (7)

1. a kind of earphone, it is characterised in that include:
USB Type-C interface, for receiving the device signal of electronic equipment transmission, the device signal includes that DAB is believed Number or simulated audio signal;
Controller, is connected with the USB Type-C interface, for recognizing the equipment of the USB Type-C interface The type of signal;
Signal transmission line, is connected with the USB Type-C interface, includes broadcast unit, is used on the signal transmission line The digital audio and video signals are converted to the audio decoding unit of simulated audio signal, for amplifying the simulated audio signal Signal amplification unit;
Dividing cell, is connected between the USB Type-C interface and signal transmission line and with the controller, is used for The type of the signal for being identified according to the controller is gating the signal transmission line;
Wherein, the controller, dividing cell, audio decoding unit, in signal amplification unit at least two be integrated in same In circuit.
2. earphone as claimed in claim 1, it is characterised in that the earphone also includes the built-in audio for connecting the controller Bus, the built-in audio bus is used for transmitting audio signal.
3. earphone as claimed in claim 2, it is characterised in that the built-in audio bus and the controller are integrated in same In circuit.
4. earphone as claimed in claim 1, it is characterised in that the earphone also includes to put located at the broadcast unit and signal Audio frequency amplifier between big unit, the audio frequency amplifier is used for suppression and is lost by the non-linear audio frequency for causing of forward path Very.
5. earphone as claimed in claim 3, it is characterised in that the earphone also includes:
Mike, for receiving acoustical signal;And
Audio coding unit, its described controller of connection and mike, for being converted into numeral input letter by the acoustical signal Number, to send the electronic equipment to by the controller.
6. earphone as claimed in claim 5, it is characterised in that the audio coding unit and the controller, dividing cell, At least one of audio decoding unit, signal amplification unit are integrated in same circuit.
7. earphone as claimed in claim 1, it is characterised in that the device signal also includes control signal, the controller Receive the control signal and the earphone is controlled based on the control signal.
CN201610957749.4A 2016-10-27 2016-10-27 Earphone CN106454594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610957749.4A CN106454594A (en) 2016-10-27 2016-10-27 Earphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610957749.4A CN106454594A (en) 2016-10-27 2016-10-27 Earphone

Publications (1)

Publication Number Publication Date
CN106454594A true CN106454594A (en) 2017-02-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610957749.4A CN106454594A (en) 2016-10-27 2016-10-27 Earphone

Country Status (1)

Country Link
CN (1) CN106454594A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205232422U (en) * 2014-12-29 2016-05-11 北京小鸟听听科技有限公司 Headset
CN105872900A (en) * 2016-04-20 2016-08-17 乐视控股(北京)有限公司 Switching device
CN105912299A (en) * 2016-04-29 2016-08-31 乐视控股(北京)有限公司 Method and device for controlling earphone mode switching, and electronic equipment
CN105979416A (en) * 2016-05-30 2016-09-28 歌尔股份有限公司 Line control earphone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205232422U (en) * 2014-12-29 2016-05-11 北京小鸟听听科技有限公司 Headset
CN105872900A (en) * 2016-04-20 2016-08-17 乐视控股(北京)有限公司 Switching device
CN105912299A (en) * 2016-04-29 2016-08-31 乐视控股(北京)有限公司 Method and device for controlling earphone mode switching, and electronic equipment
CN105979416A (en) * 2016-05-30 2016-09-28 歌尔股份有限公司 Line control earphone

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