CN105282653A - Audio-insertion automatic wake-up apparatus and audio-insertion automatic wake-up method - Google Patents
Audio-insertion automatic wake-up apparatus and audio-insertion automatic wake-up method Download PDFInfo
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- CN105282653A CN105282653A CN201410330837.2A CN201410330837A CN105282653A CN 105282653 A CN105282653 A CN 105282653A CN 201410330837 A CN201410330837 A CN 201410330837A CN 105282653 A CN105282653 A CN 105282653A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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Abstract
The invention discloses an audio-insertion automatic wake-up apparatus. The apparatus comprises an audio interface, a detection circuit and a control circuit. Two input terminals of the detection circuit are connected to a third pin and a fourth pin in the audio interface respectively so that electric signals of the two input terminals are processed and then a wake-up signal is output to the control circuit when the audio-insertion automatic wake-up apparatus is connected to audio terminal equipment. The detection circuit automatically connects a grounding pin to the ground. The control circuit is connected to two output terminals of the detection circuit so as to receive the wake-up signal output by the detection circuit so that a system enters into a normal work state. And a situation that which one is served as a microphone pin and which one is served as a grounding pin in the third pin and the fourth pin is detected and identified. The invention also discloses an audio-insertion automatic wake-up method. Through the above mode, the microphone pin and the grounding pin can be identified; the audio-insertion automatic wake-up apparatus is automatically awakened; and the audio terminal equipment and the audio-insertion automatic wake-up apparatus are in a common ground state.
Description
Technical field
The present invention relates to electronic applications, particularly relate to a kind of audio frequency and insert automatic waking device and audio frequency and insert automatic awakening method.
Background technology
Along with the progress of science and technology and the rapid emergence of the Internet, the miniaturized mobile terminals such as mobile phone, panel computer and palmtop PC become market mainstream consumer products gradually because of its convenience.At present, daily life be unable to do without the mobile terminal such as smart mobile phone, panel computer, such mobile terminal is often for having the voice frequency terminal equipment of audio interface, often need to carry out transfer of data, mutual between them, but these mobile terminals generally only comprise USB interface and audio interface two interfaces, and the USB interface of mobile terminal belongs to from equipment interface, use limited, therefore, how to utilize audio interface carry out transfer of data and become study hotspot alternately.
The audio interface of existing mobile terminal, be generally four-part form audio interface, comprise left channel pin, R channel pin, MIC pin and GND pin four part, wherein, left channel pin, the R channel pin order of connection are fixed, and the order of connection of MIC pin and GND pin is not fixed, there are two kinds of universal standards, in two kinds of universal standards, MIC pin and the GND pin order of connection are just contrary, like this, just result in audio interface MIC pin and GND pin is uncertain.And existing terminal cannot be waken up automatically when utilizing audio interface to be interconnected, be unfavorable for the saving of the energy.In addition, existing terminal cannot realize when utilizing audio interface to be interconnected therebetween initiatively commonly.
Therefore, need to provide a kind of audio frequency insertion automatic waking device and audio frequency to insert automatic awakening method, to solve the problem.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of audio frequency and inserts automatic waking device and audio frequency and insert automatic awakening method, can solve in prior art when utilizing audio interface communication and automatically cannot identify the order of connection of the MIC pin of voice frequency terminal equipment and GND pin in the system after voice frequency terminal equipment inserts of detecting, automatically can not wake, can not automatically realize the technical problem on common ground up.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of audio frequency to insert automatic waking device, for being connected with voice frequency terminal equipment and carrying out data interaction or transmission, it comprises: audio interface, testing circuit and control circuit.Audio interface is used for being connected with the audio interface of voice frequency terminal equipment, wherein, audio interface comprises the first pin, the second pin, the 3rd pin and the 4th pin, first pin and the second pin are respectively as left channel pin and R channel pin, and the one in the 3rd pin and the 4th pin is as microphone pin (MIC pin), and another one is as grounding pin (GND pin); Testing circuit comprises two inputs and two outputs, wherein, two inputs of testing circuit connect the 3rd pin in audio interface and the 4th pin respectively, with when audio frequency insertion automatic waking device is connected with voice frequency terminal equipment, the signal of telecommunication of testing circuit to two input processes rear output wake-up signal to control circuit, and testing circuit inserts automatic waking device altogether to realize voice frequency terminal equipment and audio frequency with being automatically connected to by grounding pin; The wake-up signal that two outputs of control circuit connection detection circuit export with receiving test circuit enters normal operating conditions to make system, and the whichever detected in identification the 3rd pin and the 4th pin is as microphone pin, whichever is as grounding pin, and control circuit connects the first pin of audio interface and the second pin further to process the audio signal received.
Wherein, audio frequency inserts automatic waking device and comprises power supply circuits further, this power supply circuits connection detection circuit and control circuit, thinks that testing circuit and control circuit are powered.
Wherein, testing circuit comprises common-base circuit and voltage comparator circuit, common-base circuit is connected with the 4th pin with the 3rd pin in audio interface by two inputs of testing circuit, with insert at audio frequency automatic waking device be connected with voice frequency terminal time, automatically using as the 3rd pin of grounding pin or the 4th pin with being connected to; Voltage comparator circuit is arranged between two inputs of testing circuit and two outputs, with insert at audio frequency automatic waking device be connected with voice frequency terminal time, rear output wake-up signal is processed to the signal of telecommunication of two inputs of testing circuit and makes system enter normal operating conditions to control circuit with wake-up control circuit.
Wherein, common-base circuit comprises the first switch element and second switch element, first switch element comprises control end, the first path terminal and alternate path end, wherein, the control end of the first switch element is connected to the second input of testing circuit, first path terminal of the first switch element is connected to the first input end of testing circuit, and the alternate path end ground connection of the first switch element; Second switch element comprises control end, the first path terminal and alternate path end, wherein, the control end of second switch element is connected to the first input end of testing circuit, first path terminal of second switch element is connected to the second input of testing circuit, and the alternate path end ground connection of second switch element; Wherein, the first switch element and second switch element are transistor of the same type.
Wherein, the first switch element and second switch element are nmos pass transistor.
Wherein, voltage comparator circuit comprises: the first voltage comparator and the second voltage comparator, first voltage comparator comprises normal phase input end, inverting input and output, wherein, the first input end of the normal phase input end connection detection circuit of the first voltage comparator, the inverting input of the first voltage comparator connects reference voltage, and the output of the first voltage comparator is as the first output of testing circuit; Second voltage comparator comprises normal phase input end, inverting input and output, wherein, second input of the normal phase input end connection detection circuit of the second voltage comparator, the inverting input of the second voltage comparator connects reference voltage, and the output of the second voltage comparator is as the second output of testing circuit.
Wherein, control circuit comprises filter circuit, analog switching circuit, gain amplifying circuit and MCU governor circuit, filter circuit connects the first pin and second pin of audio interface, with insert at audio frequency automatic waking device be connected with voice frequency terminal equipment time, the audio signal of the audio reception terminal equipment output by the first pin of audio interface and the second pin also carries out filtering to audio signal; Analog switching circuit connects filter circuit, with insert at audio frequency automatic waking device be connected with voice frequency terminal equipment time, the left channel pin of timesharing audio reception terminal equipment and R channel pin by the first pin of filter circuit and audio interface and the second pin and the audio signal that exports; Gain amplifying circuit connecting analog switching circuit, to carry out amplification process to the audio signal received; MCU governor circuit connects the 3rd pin and the 4th pin of gain amplifying circuit, analog switching circuit and audio interface, wherein, MCU governor circuit is for detecting whichever in identification the 3rd pin and the 4th pin as microphone pin, whichever as grounding pin, and by the 3rd pin of audio interface and the 4th pin by the audio signal transmission after process to voice frequency terminal equipment.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of audio frequency to insert automatic awakening method, it comprises: the audio interface that the audio interface of voice frequency terminal equipment and audio frequency insert automatic waking device be connected; Audio frequency inserts after the signal of telecommunication of testing circuit to two input of automatic waking device processes and exports wake-up signal, and utilize testing circuit to be automatically connected to by grounding pin to realize voice frequency terminal equipment and audio frequency inserts automatic waking device altogether; The control circuit utilizing audio frequency to insert automatic waking device receives wake-up signal thus makes system enter normal operating conditions, and the whichever detected in the 3rd pin and the 4th pin identifying audio interface is as microphone pin, whichever as grounding pin, and utilizes control circuit to process the audio signal that the first pin of audio interface and the second pin receive.
Wherein, the signal of telecommunication of the voltage comparator circuit of testing circuit to testing circuit two inputs is utilized to process rear output wake-up signal to control circuit.
Wherein, the wake-up signal utilizing two of control circuit connection detection circuit outputs to export with receiving test circuit enters normal operating conditions to make system, and the whichever detected in identification the 3rd pin and the 4th pin is as microphone pin, whichever is as grounding pin.
Wherein, utilize the common-base circuit of testing circuit to be automatically connected to by grounding pin insert automatic waking device altogether to realize voice frequency terminal equipment and audio frequency.
The invention has the beneficial effects as follows: the situation being different from prior art, the present invention connects the 3rd pin in audio interface and the 4th pin respectively by two inputs of testing circuit, when audio frequency insertion automatic waking device is connected with voice frequency terminal equipment, wake-up signal is exported after the signal of telecommunication of testing circuit to two input processes, and testing circuit inserts automatic waking device altogether to realize voice frequency terminal equipment and audio frequency with being automatically connected to by grounding pin, control circuit according to the whichever in electrical signal detection identification the 3rd pin of two of testing circuit outputs and the 4th pin as microphone pin, whichever is as grounding pin, thus can realize identifying microphone pin and grounding pin, automatically wake audio frequency up to insert automatic waking device and realize voice frequency terminal equipment and audio frequency and insert automatic waking device altogether.
Accompanying drawing explanation
Fig. 1 is the module diagram that audio frequency of the present invention inserts automatic waking device;
Fig. 2 is the electrical block diagram of testing circuit in Fig. 1;
Fig. 3 is the module diagram of control circuit in Fig. 1;
Fig. 4 is the flow chart that audio frequency of the present invention inserts automatic awakening method.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in detail.
See also Fig. 1, Fig. 2 and Fig. 3, wherein, Fig. 1 is the module diagram that audio frequency of the present invention inserts automatic waking device, and Fig. 2 is the electrical block diagram of testing circuit in Fig. 1, and Fig. 3 is the module diagram of control circuit in Fig. 1.In the present embodiment, audio frequency inserts automatic waking device and is used for being connected with voice frequency terminal equipment and carrying out data interaction or transmission, and audio frequency inserts automatic waking device and comprises: power supply circuits 10, audio interface 11, testing circuit 12 and control circuit 13.In the present embodiment, it can be audio frequency KEY that audio frequency inserts automatic waking device, entrance guard device etc., and in other embodiments, it also can be other devices that audio frequency inserts automatic waking device.In the present embodiment, voice frequency terminal equipment can be smart mobile phone, panel computer etc., in other embodiments, also can be other terminal equipments with audio interface.
Power supply circuits 10 connection detection circuit 12 and control circuit 13, think that testing circuit 12 and control circuit 13 are powered.
Audio interface 11 is for being connected with the audio interface of voice frequency terminal equipment, wherein, audio interface 11 comprises the first pin 111, second pin 112, the 3rd pin 113 and the 4th pin 114, first pin 111 and the second pin 112 are respectively as left channel pin and R channel pin, and the one in the 3rd pin 113 and the 4th pin 114 is as microphone pin (MIC pin), and another one is as grounding pin (GND pin).It will be understood by those skilled in the art that, when audio frequency insertion automatic waking device utilizes audio interface 11 to be connected with voice frequency terminal equipment, the first pin 111 then in audio interface 11 and the second pin 112 can be interconnected with the left channel pin of voice frequency terminal equipment and R channel pin respectively, and how MIC pin no matter in voice frequency terminal equipment and GND pin are arranged, it inserts the 3rd pin 113 in the audio interface 11 of automatic waking device and the 4th pin 114 respectively to be formed be connected with audio frequency.
Testing circuit 12 comprises two inputs, 121,122 and two outputs 123,124, and wherein, two inputs 121,122 of testing circuit connect the 3rd pin 113 in audio interface 11 and the 4th pin 114 respectively.
Preferably, testing circuit 12 comprises common-base circuit 20, voltage comparator circuit 21 and voltage input circuit 22.
Common-base circuit 20 is connected with the 4th pin 114 with the 3rd pin 113 in audio interface 11 by two inputs 121,122 of testing circuit 12, with insert at audio frequency automatic waking device be connected with voice frequency terminal time, be automatically connected to ground using as the 3rd pin 113 of grounding pin or the 4th pin 114.
Particularly, common-base circuit 20 comprises the first switch element N1 and second switch element N2, and the first switch element N1 comprises control end 2011, first path terminal 2012 and alternate path end 2013.Wherein, the control end 2011 of the first switch element N1 is connected to the second input 122 of testing circuit 12, first path terminal 2012 of the first switch element N1 is connected to the first input end 121 of testing circuit 12, preferably, first path terminal 2012 of the first switch element N1 is connected with first input end 121 by the 3rd resistance R3 of voltage input circuit 22, and alternate path end 2013 ground connection of the first switch element N1.Second switch element N2 comprises control end 2021, first path terminal 2022 and alternate path end 2023.Wherein, the control end 2021 of second switch element N2 is connected to the first input end 121 of testing circuit 12, first path terminal 2022 of second switch element N2 is connected to the second input 122 of testing circuit 12, preferably, first path terminal 2022 of second switch element N2 is connected with the second input 122 by the 5th resistance R5 of voltage input circuit 22, and alternate path end 2023 ground connection of second switch element N2.Preferably, the first switch element N1 and second switch element N2 is transistor of the same type.More preferably, first switch element N1 and second switch element N2 is nmos pass transistor, first path terminal 2012 of the first switch element N1 is the grid of nmos pass transistor, alternate path end 2013 is source electrode, control end 2014 is drain electrode, first path terminal 2022 of second switch element N2 is the grid of nmos pass transistor, and alternate path end 2023 is source electrode, and control end 2024 is drain electrode.Common-base circuit 20 automatically grounding pin is connected to to realize voice frequency terminal equipment and audio frequency inserts automatic waking device altogether.
The operation principle of common-base circuit is described below: when the first input end 121 of testing circuit 12 connect for grounding pin and its second input 122 time connect for microphone pin time, first path terminal 2012 of the first switch element N1 and alternate path end 2013 conducting, first path terminal 2022 of second switch element N2 is ended with alternate path end 2023, thus be grounded pin ground connection, similarly, when the first input end 121 of testing circuit 12 connect be microphone pin and its second input 122 time connect for grounding pin time, first path terminal 2022 of second switch element N2 and alternate path end 2023 conducting, first path terminal 2012 of the first switch element N1 and alternate path end 2013 end, thus be grounded pin ground connection, therefore the common-base circuit 20 of the present embodiment achieves and automatically grounding pin is connected to ground.
Voltage comparator circuit 21 is arranged between two inputs, 121,122 and two outputs 123,124 of testing circuit 12, with when audio frequency insertion automatic waking device is connected with voice frequency terminal, rear output wake-up signal is processed to control circuit 13 to the signal of telecommunication of two inputs 121,122 of testing circuit 12, with wake-up control circuit 13, thus system is made to enter normal operating conditions.
Preferably, voltage comparator circuit 21 comprises the first voltage comparator A, the second voltage comparator B, reference voltage circuit 211, the 4th resistance R4 and the 6th resistance R6.First voltage comparator A comprises normal phase input end, inverting input and output, wherein, the first input end 121 of the normal phase input end connection detection circuit 12 of the first voltage comparator A, preferably, the normal phase input end of the first voltage comparator A is connected with first input end 121 by the 3rd resistance R3 of voltage input circuit 22.The inverting input of the first voltage comparator A connects reference voltage, and the output of the first voltage comparator A is as the first output 123 of testing circuit 12.Second voltage comparator B comprises normal phase input end, inverting input and output, wherein, second input 122 of the normal phase input end connection detection circuit 12 of the second voltage comparator B, preferably, the normal phase input end of the second voltage comparator B is connected with the second input 122 by the 5th resistance R5 of voltage input circuit 22, the inverting input of the second voltage comparator B connects reference voltage, and the output of the second voltage comparator B is as the second output 124 of testing circuit 12.The input of reference voltage circuit 211 connects power supply circuits 10, and the output of reference voltage circuit 211 connects the inverting input of the first voltage comparator A and the second voltage comparator B, to provide reference voltage.In the present embodiment, the first input end 121 of testing circuit 12 connects the 3rd pin 113 of audio interface 11, and the second input 122 of testing circuit 12 connects the 4th pin 114 of audio interface 11.
Preferably, reference voltage circuit 211 comprises the first resistance R1 and the second resistance R2, the input of the first end of the first resistance R1 circuit 211 as the reference voltage connects power supply circuits 10, second end of the first resistance R2 connects the first end of the second resistance R2, the second end ground connection of the second resistance R2, the output of the first end of the second resistance R2 circuit 211 as the reference voltage.
Preferably, the 4th resistance R4 is connected with the normal phase input end of the first voltage comparator A, and the 4th resistance R4 is pull down resistor.Wherein, the first end of the 4th resistance R4 is connected with normal phase input end, the 4th resistance R4 second end ground connection.
Preferably, the 6th resistance R6 is connected with the normal phase input end of the second voltage comparator B, and the 6th resistance R6 is pull down resistor.Wherein, the first end of the 6th resistance R6 is connected with normal phase input end, the 6th resistance R6 second end ground connection.
Voltage input circuit 22 comprises first input end 121, second input 122, the 3rd resistance R3 and the 5th resistance R5 of testing circuit 12.The first end 121 of the 3rd resistance R3 is as the first input end 121 of testing circuit 12, and the first end 122 of the 5th resistance R5 is as the second input 122 of testing circuit 12.
Preferably, the 3rd resistance R3 second end is connected with the normal phase input end of the first voltage comparator A.
Preferably, the 5th resistance R5 second end is connected with the normal phase input end of the second voltage comparator B.
It should be noted that, in other embodiments, can change the resistance of the first voltage comparator A and the second voltage comparator B periphery and connected mode thereof according to actual needs, the present invention does not limit this, and such as voltage input circuit 22 and reference voltage circuit 211 also can be other structure.
Control circuit 13 comprises filter circuit 30, analog switching circuit 31, gain amplifying circuit 32 and MCU governor circuit 33.Control circuit 13 connects the first pin 111 and the second pin 112 of audio interface 11 further.
Particularly, filter circuit 30 connects the first pin 111 and the second pin 112 of audio interface 11, with insert at audio frequency automatic waking device be connected with voice frequency terminal equipment time, the audio signal of the audio reception terminal equipment output by the first pin 111 of audio interface 11 and the second pin 112 also carries out filtering to audio signal.
Analog switching circuit 31 connects filter circuit 30, with insert at audio frequency automatic waking device be connected with voice frequency terminal equipment time, the left channel pin of timesharing audio reception terminal equipment and R channel pin by the first pin 111 of filter circuit 30 and audio interface 11 and the second pin 112 and the audio signal that exports.
Gain amplifying circuit 32 connecting analog switching circuit 31, to carry out amplification process to the audio signal received.
MCU governor circuit 33 connects the 3rd pin 113 and the 4th pin 114 of gain amplifying circuit 32, analog switching circuit 31 and audio interface 11, wherein, MCU governor circuit 33 is for detecting whichever in identification the 3rd pin 113 and the 4th pin 114 as microphone pin, whichever as grounding pin, and by the 3rd pin 113 of audio interface 11 and the 4th pin 114 by the audio signal transmission after process to voice frequency terminal equipment.Preferably, MCU governor circuit 33 can carry out path by address signal to analog switching circuit 31 and select to control, and MCU governor circuit 33 can carry out digital programmable to gain amplifying circuit 32 and control its multiplication factor.
The audio frequency that the present embodiment is described below inserts the operation principle of automatic waking device.
Due to the microphone pin of the audio interface of different voice frequency terminal equipments and the order of connection of grounding pin uncertain, therefore voice frequency terminal equipment and audio frequency insert automatic waking device be connected by audio interface time, one in 3rd pin 113 and the 4th pin 114 is as microphone pin (MIC pin), and another one is as grounding pin (GND pin), but the whichever in the 3rd pin 113 in uncertain audio interface 11 and the 4th pin 114 is as microphone pin, and whichever is as grounding pin.Voice frequency terminal equipment and audio frequency insert automatic waking device be connected by audio interface time, the audio frequency common-base circuit 20 inserted in the testing circuit 12 of automatic waking device realize automatically grounding pin being connected to (its principle as previously mentioned).Secondly, control circuit 13 is according to two of testing circuit 12 outputs 123, the signal of telecommunication of 124, preferably according to two outputs 123, the voltage signal of 124 detects whichever in identification the 3rd pin and the 4th pin as microphone pin, whichever is as grounding pin, if the first output 123 of testing circuit 12 is high voltage signal or pulse signal and the second output 124 of testing circuit 12 is always low voltage signal, then control circuit 13 identifies that the 3rd pin 113 is microphone pin, 4th pin 114 is grounding pin, if otherwise the first output 123 of testing circuit 12 is always low voltage signal and the second input 124 of testing circuit 12 is high voltage signal or pulse signal, control circuit 13 identifies that the 3rd pin 113 is grounding pin, 4th pin 114 is microphone pin.
Export wake-up signal after the signal of telecommunication of testing circuit 12 to two inputs 121,122 processes, preferably, wake-up signal is the pulse signal that exports of above-mentioned first output 123 of testing circuit 12 or the second output 124 or high level signal.Therefore, in the present embodiment, pulse signal or high level signal are as the signal of microphone pin whichever as grounding pin as the whichever detected in the 3rd pin 113 and the 4th pin 114, also as wake-up signal, two outputs 123 of control circuit 13 connection detection circuit 12, 124 with receiving test circuit 12 export wake-up signal and control circuit 13 be waken up after receiving wake-up signal, thus make system enter normal operating conditions, control circuit 13 controls when not receiving wake-up signal to enter low power consumpting state, thus make system enter low power consumpting state, last control circuit 13 is to processing from the first pin 111 and the second pin 112 audio signal of receiving.In the present embodiment, system refers to that audio frequency inserts the whole system of automatic waking device or audio frequency and inserts the system that automatic waking device and voice frequency terminal equipment form, and the present embodiment does not limit this.
Refer to Fig. 4, Fig. 4 is the flow chart that audio frequency of the present invention inserts automatic awakening method.In the present embodiment, audio frequency inserts automatic awakening method and comprises the following steps:
Step S11: the audio interface that the audio interface of voice frequency terminal equipment and audio frequency insert automatic waking device is connected.
Step S12: audio frequency inserts after the signal of telecommunication of testing circuit to two input of automatic waking device processes and goes out wake-up signal, and utilize testing circuit to be automatically connected to by grounding pin to realize voice frequency terminal equipment and audio frequency inserts automatic waking device altogether.
In step s 12, such as, export wake-up signal after utilizing the signal of telecommunication of two inputs of voltage comparator circuit 21 pairs of testing circuits 12 of testing circuit 12 to process, utilize the common-base circuit 20 of testing circuit 12 to be automatically connected to by grounding pin to realize voice frequency terminal equipment and audio frequency inserts automatic waking device altogether.
Step S13: the control circuit utilizing audio frequency to insert automatic waking device receives wake-up signal and enters normal operating conditions to make system, and the whichever detected in the 3rd pin and the 4th pin identifying audio interface is as microphone pin, whichever as grounding pin, and utilizes control circuit to process the audio signal that the first pin of audio interface and the second pin receive.
In the present embodiment, said method can insert automatic waking device by aforementioned audio and realize, and repeats no more herein.
Be different from the situation of prior art, the present invention connects the 3rd pin in audio interface and the 4th pin respectively by two inputs of testing circuit, when audio frequency insertion automatic waking device is connected with voice frequency terminal equipment, wake-up signal is exported after the signal of telecommunication of testing circuit to two input processes, and testing circuit inserts automatic waking device altogether to realize voice frequency terminal equipment and audio frequency with being automatically connected to by grounding pin, control circuit according to the whichever in electrical signal detection identification the 3rd pin of two of testing circuit outputs and the 4th pin as microphone pin, whichever is as grounding pin, thus can realize identifying microphone pin and grounding pin, automatically wake audio frequency up to insert automatic waking device and realize voice frequency terminal equipment and audio frequency and insert automatic waking device altogether.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an audio frequency inserts automatic waking device, for being connected with voice frequency terminal equipment and carrying out data interaction or transmission, it is characterized in that, described audio frequency inserts automatic waking device and comprises: audio interface, testing circuit and control circuit, described audio interface is used for being connected with the audio interface of described voice frequency terminal equipment, wherein, described audio interface comprises the first pin, second pin, 3rd pin and the 4th pin, described first pin and described second pin are respectively as left channel pin and R channel pin, and the one in described 3rd pin and described 4th pin is as microphone pin (MIC pin), and another one is as grounding pin (GND pin), described testing circuit comprises two inputs and two outputs, wherein, two inputs of described testing circuit connect described 3rd pin in described audio interface and described 4th pin respectively, with when described audio frequency insertion automatic waking device is connected with described voice frequency terminal equipment, rear output wake-up signal is processed to described control circuit to the signal of telecommunication of described two inputs, and described testing circuit automatically described grounding pin is connected to to realize described voice frequency terminal equipment and described audio frequency inserts automatic waking device altogether, two outputs that described control circuit connects described testing circuit make system enter normal operating conditions with the described wake-up signal receiving the output of described testing circuit, and the whichever detected in described 3rd pin of identification and described 4th pin is as microphone pin, whichever is as described grounding pin, and described control circuit connects described first pin of described audio interface and described second pin further to process the audio signal received.
2. audio frequency according to claim 1 inserts automatic waking device, it is characterized in that, comprises further:
Power supply circuits, connect described testing circuit and described control circuit, think that described testing circuit and described control circuit are powered.
3. audio frequency according to claim 2 inserts automatic waking device, and it is characterized in that, described testing circuit comprises:
Common-base circuit, be connected with the 4th pin with described 3rd pin in described audio interface by two inputs of described testing circuit, with insert at described audio frequency automatic waking device be connected with described voice frequency terminal time, automatically using as described 3rd pin of described grounding pin or described 4th pin with being connected to;
Voltage comparator circuit, be arranged between two inputs of described testing circuit and two outputs, with when described audio frequency insertion automatic waking device is connected with described voice frequency terminal, rear output wake-up signal is processed to described control circuit to wake described control circuit up thus to make described system enter normal operating conditions to the signal of telecommunication of described two inputs.
4. audio frequency according to claim 3 inserts automatic waking device, and it is characterized in that, described common-base circuit comprises:
First switch element, it comprises control end, the first path terminal and alternate path end, wherein, the control end of described first switch element is connected to the second input of described testing circuit, first path terminal of described first switch element is connected to the first input end of described testing circuit, and the alternate path end ground connection of described first switch element;
Second switch element, it comprises control end, the first path terminal and alternate path end, wherein, the control end of described second switch element is connected to the first input end of described testing circuit, first path terminal of described second switch element is connected to the second input of described testing circuit, and the alternate path end ground connection of described second switch element;
Wherein, described first switch element and described second switch element are transistor of the same type.
5. audio frequency according to claim 4 inserts automatic waking device, and it is characterized in that, described first switch element and described second switch element are nmos pass transistor.
6. audio frequency according to claim 3 inserts automatic waking device, and it is characterized in that, described voltage comparator circuit comprises:
First voltage comparator, it comprises normal phase input end, inverting input and output, wherein, the normal phase input end of described first voltage comparator connects the first input end of described testing circuit, the inverting input of described first voltage comparator connects reference voltage, and the output of described first voltage comparator is as the first output of described testing circuit;
Second voltage comparator, it comprises normal phase input end, inverting input and output, wherein, the normal phase input end of described second voltage comparator connects the second input of described testing circuit, the inverting input of described second voltage comparator connects described reference voltage, and the output of described second voltage comparator is as the second output of described testing circuit.
7. audio frequency according to claim 1 inserts automatic waking device, and it is characterized in that, described control circuit comprises:
Filter circuit, connect described first pin of described audio interface and described second pin, with insert at described audio frequency automatic waking device be connected with described voice frequency terminal equipment time, receive the audio signal of described voice frequency terminal equipment output by described first pin of described audio interface and described second pin and filtering carried out to described audio signal;
Analog switching circuit, connect described filter circuit, with insert at described audio frequency automatic waking device be connected with described voice frequency terminal equipment time, by described first pin of described filter circuit and described audio interface and described second pin, timesharing receives the left channel pin of described voice frequency terminal equipment and R channel pin and the described audio signal that exports;
Gain amplifying circuit, connects described analog switching circuit, to carry out amplification process to the described audio signal received;
MCU governor circuit, connect described 3rd pin of described gain amplifying circuit, described analog switching circuit and described audio interface and described 4th pin, wherein, for detecting, described MCU governor circuit identifies that whichever in described 3rd pin and described 4th pin is as microphone pin, whichever is as described grounding pin and by described 3rd pin of described audio interface and described 4th pin by the extremely described voice frequency terminal equipment of the described audio signal transmission after process.
8. audio frequency inserts an automatic awakening method, it is characterized in that, described method comprises:
The audio interface that the audio interface of voice frequency terminal equipment and audio frequency insert automatic waking device is connected;
Export wake-up signal after the signal of telecommunication of testing circuit to two input that described audio frequency inserts automatic waking device processes, and utilize described testing circuit to be automatically connected to by described grounding pin to realize described voice frequency terminal equipment and described audio frequency inserts automatic waking device altogether;
The control circuit utilizing described audio frequency to insert automatic waking device receives described wake-up signal and makes system enter normal operating conditions, and the whichever detected in the 3rd pin and the 4th pin identifying described audio interface is as microphone pin, whichever as grounding pin, and utilizes described control circuit to process the audio signal that the first pin of described audio interface and the second pin receive.
9. audio frequency according to claim 8 inserts automatic awakening method, it is characterized in that, utilize the signal of telecommunication of the voltage comparator circuit of described testing circuit to two of described testing circuit inputs to process rear output wake-up signal to described control circuit to wake described control circuit up thus to make described system enter normal operating conditions.
10. audio frequency according to claim 9 inserts automatic awakening method, it is characterized in that, utilize the common-base circuit of described testing circuit to be automatically connected to by described grounding pin insert automatic waking device altogether to realize described voice frequency terminal equipment and described audio frequency.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330837.2A CN105282653B (en) | 2014-07-11 | 2014-07-11 | Audio is inserted into automatic waking device and audio is inserted into automatic awakening method |
| PCT/CN2015/083784 WO2016004897A1 (en) | 2014-07-11 | 2015-07-10 | Audio insert automatic wake-up device and audio insert automatic wake-up method |
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| CN201410330837.2A CN105282653B (en) | 2014-07-11 | 2014-07-11 | Audio is inserted into automatic waking device and audio is inserted into automatic awakening method |
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| CN105282653A true CN105282653A (en) | 2016-01-27 |
| CN105282653B CN105282653B (en) | 2019-04-05 |
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| CN110058830A (en) * | 2018-01-19 | 2019-07-26 | 杭州海康威视数字技术股份有限公司 | Signal deteching circuit and method, audio processing equipment |
| CN112820303A (en) * | 2020-12-31 | 2021-05-18 | 北京握奇数据股份有限公司 | Audio interface authentication device |
| CN114650485A (en) * | 2020-12-18 | 2022-06-21 | 广西三诺数字科技有限公司 | Signal transmission method and device, computer equipment and storage medium |
| CN114924639A (en) * | 2022-05-12 | 2022-08-19 | 芯海科技（深圳）股份有限公司 | Electronic device and method for waking up micro control unit |
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| CN103376876A (en) * | 2012-04-26 | 2013-10-30 | 国民技术股份有限公司 | Audio interface device and power management method thereof |
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| CN110058830A (en) * | 2018-01-19 | 2019-07-26 | 杭州海康威视数字技术股份有限公司 | Signal deteching circuit and method, audio processing equipment |
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| CN112820303A (en) * | 2020-12-31 | 2021-05-18 | 北京握奇数据股份有限公司 | Audio interface authentication device |
| CN114924639A (en) * | 2022-05-12 | 2022-08-19 | 芯海科技（深圳）股份有限公司 | Electronic device and method for waking up micro control unit |
| CN114924639B (en) * | 2022-05-12 | 2024-05-28 | 芯海科技（深圳）股份有限公司 | Electronic device and method for waking up micro control unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105282653B (en) | 2019-04-05 |
| WO2016004897A1 (en) | 2016-01-14 |
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