CN103780995A - Audio signal output device - Google Patents
Audio signal output device Download PDFInfo
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- CN103780995A CN103780995A CN201410042201.8A CN201410042201A CN103780995A CN 103780995 A CN103780995 A CN 103780995A CN 201410042201 A CN201410042201 A CN 201410042201A CN 103780995 A CN103780995 A CN 103780995A
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Abstract
The invention provides an audio signal output device. The audio signal output device comprises a first voltage division unit, a second voltage division unit, a first processing unit and a second processing unit. The first voltage division unit comprises a first connecting end and a second connecting end, wherein the first connecting end is connected with a power supply, and the second connecting end is connected with an input/output interface of a chip; the second voltage division unit comprises a third connecting end and a fourth connecting end, wherein the third connecting end is connected with the second connecting end of the first voltage division unit, the fourth connecting end is grounded, and voltage across the second voltage division unit is equal to voltage across the first voltage division unit; the first processing unit comprises a first input interface and a first output interface, wherein the first input interface is connected with the third connecting end, and the first output interface is connected with a microphone pin of an audio interface; the second processing unit comprises a second input interface and a second output interface, wherein the second input interface is connected with the third connecting end, the second output interface is connected with a ground pin of the audio interface; the first processing unit and the second processing unit are attenuator circuits for each other.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to a kind of audio signal output device.
Background technology
Existing audio interface, generally comprise audio frequency output pin AUDIO, pin GND and Mike's pin MIC, audio frequency output pin AUDIO generally comprises L channel pin and/or R channel pin, be generally three-prong and the 4th pin of four-part form audio interface, the first pin of audio interface and the second pin exist two types, and one is that the first pin is Mike's pin MIC, and the second pin is ground pin GND, another kind is that the first pin is ground pin GND, and the second pin is Mike's pin MIC.
In the time utilizing above-mentioned audio interface transmission upstream tones signal, in view of the receiving ability of upstream tones signal receiving device limited, make the signal and the actual signal that receive have certain deviation, transmission how to optimize upstream tones signal is technical problem urgently to be resolved hurrily.
Summary of the invention
The invention provides a kind of audio signal output device, main purpose is to optimize the transmitting procedure of upstream tones signal.
A kind of audio signal output device, comprising: the first partial pressure unit, comprise the first link and the second link, and wherein said the first link is connected with power supply, and the second link is connected with the input/output interface of chip; The second partial pressure unit, comprise the 3rd link and the 4th link, wherein said the 3rd link is connected with the second link of described the first partial pressure unit, the 4th link ground connection, and the voltage that wherein said the second partial pressure unit consumes equates with the voltage that described the first partial pressure unit consumes; The first processing unit, comprises the first input interface and described the first output interface, and wherein said the first input interface is connected with described the 3rd link, and the first output interface is connected with Mike's pin of described audio interface; The second processing unit, comprises the second input interface and described the second output interface, and wherein said the second input interface is connected with described the 3rd link, and the second output interface is connected with the ground pin of described audio interface; Wherein, described the first processing unit and described the second processing unit attenuator circuit each other.
Wherein, described the first processing unit adopts filter circuit and/or bleeder circuit; Described the second processing unit adopts filter circuit and/or bleeder circuit.
Wherein, described the first processing unit and described the second processing unit balance attenuation circuit each other, or, described the first processing unit and described the second processing unit asymmetric attenuator circuit each other.
A kind of audio signal output device, comprising: the first partial pressure unit, comprise the first link and the second link, and wherein said the first link is connected with the power supply in described intelligent cipher key equipment, and the second link is connected with the input/output interface of chip; The second partial pressure unit, comprises the 3rd link and the 4th link, and wherein said the 3rd link is connected with the second link of described the first partial pressure unit; The 3rd partial pressure unit, comprise the 5th link and the 6th link, wherein said the 5th link is connected with described the 4th link, the 6th link ground connection, the voltage summation of wherein said the second partial pressure unit and the 3rd partial pressure unit consumption equals the voltage that the first partial pressure unit consumes, and the voltage of the second partial pressure unit consumption is greater than the voltage that the 3rd partial pressure unit consumes; The first processing unit, comprises the first input interface and described the first output interface, and wherein said the first input interface is connected with described the 5th link, and described the first output interface is connected with Mike's pin of audio interface; The second processing unit, comprise the second input interface and described the second output interface, wherein said the second input interface is connected with described the 5th link, and described the second output interface is connected with the ground pin of audio interface, described the first processing unit and described the second processing unit attenuator circuit each other.
Wherein, described the first processing unit adopts filter circuit and/or bleeder circuit; Described the second processing unit adopts filter circuit and/or bleeder circuit.
Wherein, described the first processing unit and described the second processing unit balance attenuation circuit each other, or, described the first processing unit and described the second processing unit asymmetric attenuator circuit each other.
Device provided by the invention, by the first partial pressure unit and the second partial pressure unit, power supply is carried out to dividing potential drop, the half of the voltage that the voltage that makes the input/output interface junction of chip is power supply, thereby at signal generation apparatus when by the first processing unit and the second processing unit output waveform, can not produce the phenomenon of voltage lifting, thereby avoid occurring the phenomenon of direct current shake.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation that the invention provides a kind of audio signal output device;
Fig. 2 is another structural representation of audio signal output device shown in Fig. 1;
Fig. 3 is the structural representation that the invention provides another kind of audio signal output device;
Fig. 4 is another structural representation of audio signal output device shown in Fig. 3.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to protection scope of the present invention.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail.
Fig. 1 is the structural representation that the invention provides a kind of audio signal output device.Fig. 1 shown device, comprising:
The first partial pressure unit 101, comprises the first link and the second link, and wherein said the first link is connected with power supply, and the second link is connected with the input/output interface of chip;
The second partial pressure unit 102, comprise the 3rd link and the 4th link, wherein said the 3rd link is connected with the second link of described the first partial pressure unit, the 4th link ground connection, and the voltage that wherein said the second partial pressure unit consumes equates with the voltage that described the first partial pressure unit consumes;
The first processing unit 103, comprises the first input interface and described the first output interface, and wherein said the first input interface is connected with described the 3rd link, and the first output interface is connected with Mike's pin of described audio interface;
The second processing unit 104, comprises the second input interface and described the second output interface, and wherein said the second input interface is connected with described the 3rd link, and the first output interface is connected with the ground pin of described audio interface;
Wherein, described the first processing unit 103 and described the second processing unit 104 attenuator circuit each other.
Device provided by the invention, by the first partial pressure unit and the second partial pressure unit, power supply is carried out to dividing potential drop, the half of the voltage that the voltage that makes the input/output interface junction of chip is power supply, thereby at signal generation apparatus when by the first processing unit and the second processing unit output waveform, can not produce the phenomenon of voltage lifting, thereby avoid occurring the phenomenon of direct current shake.
Below device embodiment provided by the invention is described further:
Wherein, this audio signal output device can be built in intelligent cipher key equipment, in the time that this intelligent cipher key equipment is connected with mobile terminal by audio interface, after the first partial pressure unit and the second partial pressure unit, by the first processing unit and the second processing unit, audio signal is sent to mobile terminal, its chips input/output interface is the input/output interface of the safety chip in intelligent cipher key equipment.
Wherein, this intelligent cipher key equipment can comprise audio interface, or this intelligent cipher key equipment comprises USB interface, is connected with mobile terminal by the external adapter for transfer USB and audio connector.
Wherein, this mobile terminal can be notebook, smart mobile phone, flat board etc.
Wherein, described the first partial pressure unit and the second partial pressure unit can be for to be made up of consuming components, as resistance, diode etc.
Wherein the circuit structure of the second partial pressure unit can be identical with the first partial pressure unit, as being all the resistance that resistance is equal, and also can be different.If when the circuit structure of the circuit structure of the second partial pressure unit and the first partial pressure unit is different, as long as the second partial pressure unit is identical to the consumption of voltage with the first partial pressure unit.
For example, wherein the resistance of the first processing unit equals the resistance of the second processing unit.
Wherein, described the first processing unit adopts filter circuit and/or bleeder circuit; Described the second processing unit adopts filter circuit and/or bleeder circuit.For instance, filter circuit can be realized by electric capacity, and bleeder circuit can be realized by resistance.
Wherein, described the first processing unit and described the second processing unit balance attenuation circuit each other, or, described the first processing unit and described the second processing unit asymmetric attenuator circuit each other.
For instance, if the first processing unit and the second processing unit are made up of electric capacity, if the capacitor equivalent of the first processing unit and the second processing unit, the first processing unit and the second processing unit are balance attenuation circuit; If the electric capacity of the first processing unit and the second processing unit is not etc., the first processing unit and the second processing unit are asymmetric attenuator circuit.
Fig. 2 is another structural representation of audio signal output device shown in Fig. 1.
In this circuit, the first processing unit is resistance, and the second processing unit is electric capacity, the first processing unit is different with the components and parts of the second processing unit, in actual applications, also can be identical, the first processing unit and the second processing unit are resistance or are electric capacity.
Fig. 3 is the structural representation that the invention provides another kind of audio signal output device embodiment.Embodiment illustrated in fig. 4 comprising:
The first partial pressure unit 401, comprises the first link and the second link, and wherein said the first link is connected with the power supply in described intelligent cipher key equipment, and the second link is connected with the input/output interface of chip;
The second partial pressure unit 402, comprises the 3rd link and the 4th link, and wherein said the 3rd link is connected with the second link of described the first partial pressure unit;
The 3rd partial pressure unit 403, comprise the 5th link and the 6th link, wherein said the 5th link is connected with described the 4th link, the 6th link ground connection, the voltage summation of wherein said the second partial pressure unit and the 3rd partial pressure unit consumption equals the voltage that the first partial pressure unit consumes, and the voltage of the second partial pressure unit consumption is greater than the voltage that the 3rd partial pressure unit consumes;
The first processing unit 404, comprises the first input interface and described the first output interface, and wherein said the first input interface is connected with described the 5th link, and described the first output interface is connected with Mike's pin of audio interface;
The second processing unit 405, comprise the second input interface and described the second output interface, wherein said the second input interface is connected with described the 5th link, described the second output interface is connected with the ground pin of audio interface, described the first processing unit 404 and described the second processing unit 405 attenuator circuit each other.
Device provided by the invention, by the first partial pressure unit, the second partial pressure unit and the 3rd partial pressure unit, power supply is carried out to dividing potential drop, the half of the voltage that the voltage that makes the input/output interface junction of chip is power supply, thereby at signal generation apparatus when by the first processing unit and the second processing unit output waveform, can not produce the phenomenon of voltage lifting, thereby avoid the phenomenon of direct current shake; In addition, by the second partial pressure unit and the 3rd partial pressure unit, the half of the voltage to power supply continues dividing potential drop, make the voltage of waveform of signal generation apparatus output lower than the voltage of the input/output interface junction of chip, thereby guarantee that waveform is in the recipient's of waveform sample range, there will not be direct current overshoot phenomenon, guaranteed the complete reception of signal.
Below device embodiment provided by the invention is described further:
Wherein, this audio signal output device can be built in intelligent cipher key equipment, in the time that this intelligent cipher key equipment is connected with mobile terminal by audio interface, after the first partial pressure unit, the second partial pressure unit and the 3rd partial pressure unit voltage division processing, by the first processing unit and the second processing unit, audio signal is sent to mobile terminal again, its chips input/output interface is the input/output interface of the safety chip in intelligent cipher key equipment.
Wherein, this intelligent cipher key equipment can comprise audio interface, or this intelligent cipher key equipment comprises USB interface, is connected with mobile terminal by the external adapter for transfer USB and audio connector.
Wherein, this mobile terminal can be notebook, smart mobile phone, flat board etc.
Wherein, described the first partial pressure unit, the second partial pressure unit and the 3rd partial pressure unit can be for to be made up of consuming components, as resistance, diode etc., wherein the summation of satisfied the second partial pressure unit of the structure of above-mentioned three partial pressure unit and the 3rd partial pressure unit attrition voltage is identical to the consumption of voltage with the first partial pressure unit.
For example, above-mentioned three partial pressure unit form by resistance, and wherein the resistance of the first processing unit equals the summation of the resistance of the second processing unit and the 3rd partial pressure unit.
Wherein, described the first processing unit adopts filter circuit and/or bleeder circuit; Described the second processing unit adopts filter circuit and/or bleeder circuit.For instance, filter circuit can be realized by electric capacity, and bleeder circuit can be realized by resistance.
Wherein, described the first processing unit and described the second processing unit balance attenuation circuit each other, or, described the first processing unit and described the second processing unit asymmetric attenuator circuit each other.
For instance, if the first processing unit and the second processing unit are made up of electric capacity, if the capacitor equivalent of the first processing unit and the second processing unit,, the first processing unit and the second processing unit would be balance attenuation circuit; If the electric capacity of the first processing unit and the second processing unit is not etc., the first processing unit and the second processing unit are asymmetric attenuator circuit.
Fig. 4 is another structural representation of audio signal output device shown in Fig. 3.
In this circuit, the first processing unit is resistance, and the second processing unit is electric capacity, the first processing unit is different with the components and parts of the second processing unit, in actual applications, also can be identical, the first processing unit and the second processing unit are resistance or are electric capacity.
Any process of otherwise describing in flow chart or at this or method are described and can be understood to, represent to comprise that one or more is for realizing module, fragment or the part of code of executable instruction of step of specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrary order, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with being stored in software or the firmware carried out in memory and by suitable instruction execution system.For example, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic for data-signal being realized to the logic gates of logic function, there is the application-specific integrated circuit (ASIC) of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a kind of computer-readable recording medium, this program, in the time carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium using the form of software function module.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.Scope of the present invention is by claims and be equal to and limit.
Claims (6)
1. an audio signal output device, is characterized in that, comprising:
The first partial pressure unit, comprises the first link and the second link, and wherein said the first link is connected with power supply, and the second link is connected with the input/output interface of chip;
The second partial pressure unit, comprise the 3rd link and the 4th link, wherein said the 3rd link is connected with the second link of described the first partial pressure unit, the 4th link ground connection, and the voltage that wherein said the second partial pressure unit consumes equates with the voltage that described the first partial pressure unit consumes;
The first processing unit, comprises the first input interface and described the first output interface, and wherein said the first input interface is connected with described the 3rd link, and the first output interface is connected with Mike's pin of described audio interface;
The second processing unit, comprises the second input interface and described the second output interface, and wherein said the second input interface is connected with described the 3rd link, and the second output interface is connected with the ground pin of described audio interface;
Wherein, described the first processing unit and described the second processing unit attenuator circuit each other.
2. device according to claim 1, is characterized in that,
Described the first processing unit adopts filter circuit and/or bleeder circuit;
Described the second processing unit adopts filter circuit and/or bleeder circuit.
3. device according to claim 1, is characterized in that,
Described the first processing unit and described the second processing unit balance attenuation circuit each other, or, described the first processing unit and described the second processing unit asymmetric attenuator circuit each other.
4. an audio signal output device, is characterized in that, comprising:
The first partial pressure unit, comprises the first link and the second link, and wherein said the first link is connected with the power supply in described intelligent cipher key equipment, and the second link is connected with the input/output interface of chip;
The second partial pressure unit, comprises the 3rd link and the 4th link, and wherein said the 3rd link is connected with the second link of described the first partial pressure unit;
The 3rd partial pressure unit, comprise the 5th link and the 6th link, wherein said the 5th link is connected with described the 4th link, the 6th link ground connection, the voltage summation of wherein said the second partial pressure unit and the 3rd partial pressure unit consumption equals the voltage that the first partial pressure unit consumes, and the voltage of the second partial pressure unit consumption is greater than the voltage that the 3rd partial pressure unit consumes;
The first processing unit, comprises the first input interface and described the first output interface, and wherein said the first input interface is connected with described the 5th link, and described the first output interface is connected with Mike's pin of audio interface;
The second processing unit, comprise the second input interface and described the second output interface, wherein said the second input interface is connected with described the 5th link, and described the second output interface is connected with the ground pin of audio interface, described the first processing unit and described the second processing unit attenuator circuit each other.
5. device according to claim 4, is characterized in that,
Described the first processing unit adopts filter circuit and/or bleeder circuit;
Described the second processing unit adopts filter circuit and/or bleeder circuit.
6. device according to claim 4, is characterized in that,
Described the first processing unit and described the second processing unit balance attenuation circuit each other, or, described the first processing unit and described the second processing unit asymmetric attenuator circuit each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410042201.8A CN103780995A (en) | 2014-01-28 | 2014-01-28 | Audio signal output device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410042201.8A CN103780995A (en) | 2014-01-28 | 2014-01-28 | Audio signal output device |
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| CN201410042201.8A Pending CN103780995A (en) | 2014-01-28 | 2014-01-28 | Audio signal output device |
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| WO2015113473A1 (en) * | 2014-01-28 | 2015-08-06 | 天地融科技股份有限公司 | Smart key device and audio signal transmission system |
| CN109378009A (en) * | 2018-09-21 | 2019-02-22 | 中国航空无线电电子研究所 | Airborne alarm instantaneous speech power |
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Application publication date: 20140507 |