CN106331948A - Mobile phone audio interface communication equipment with adaptation function - Google Patents
Mobile phone audio interface communication equipment with adaptation function Download PDFInfo
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- CN106331948A CN106331948A CN201510379746.2A CN201510379746A CN106331948A CN 106331948 A CN106331948 A CN 106331948A CN 201510379746 A CN201510379746 A CN 201510379746A CN 106331948 A CN106331948 A CN 106331948A
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Abstract
The invention relates to the technical field of communication, and provides mobile phone audio interface communication equipment with an adaptation function. The mobile phone audio interface communication equipment comprises an adaptive device which is connected to an audio interface and a functional circuit module, wherein the audio interface comprises a first pin, a second pin, a third pin and a fourth pin; one of the third pin and the fourth pin is a microphone pin, and the other is a ground pin; the adaptive device comprises a first MOS (Metal Oxide Semiconductor) transistor and a second MOS transistor; a grid electrode of the first MOS transistor is connected with the third pin; a drain electrode of the first MOS transistor is connected with the fourth pin; a source electrode of the first MOS transistor is grounded; a grid electrode of the second MOS transistor is connected with the fourth pin; a drain electrode of the second MOS transistor is connected with the third pin; and a source electrode of the second MOS transistor is grounded. Through the technical scheme, automatic switching of pin connection circuits of the audio interface can be realized, so that the compatibility of the equipment meets national standards and international standards.
Description
Technical field
The present invention relates to mobile audio interface communication technical field, especially with respect to a kind of mobile audio interface communication equipment having from adaption function.
Background technology
Along with the high speed development of mobile communication technology, mobile phone has become as means of communication the most universal in people's daily life, based on mobile phone development
Application program and ancillary equipment thereof also get more and more, and the function of mobile phone expanded by these application programs and ancillary equipment thereof so that it is far beyond simple
The category of means of communication, such as Cellscope, mobile phone micro projector, wireless handheld scanner, health detector, mobile phone 20M audio frequency are sent out
Emitter, mobile phone card reader, air monitor etc., these ancillary equipment by wireless or wired by the way of be connected with mobile phone, in the side of wired connection
In formula, ancillary equipment is mainly attached by interface existing with on mobile phone, such as audio interface, data transmission interface etc., but, different
The form of the identical function interface that the mobile phone of kind is provided is the most different, and relatively common differ greatly is power interface, therefore ancillary equipment with
The interface shape of mobile phone also has number of different types.
Mobile audio interface communication equipment refers to that the ancillary equipment communicated by mobile audio interface and mobile phone, the audio frequency of existing main flow mobile phone are connect
Mouth all meets national standard or international standard, therefore it will be more and more wider for carry out the ancillary equipment of data interaction applying by the audio interface of mobile phone and mobile phone
General.
As it was previously stated, the audio interface of mobile phone is primarily present two kinds of standards, national standard and international standard, wherein, the plug connection of national standard depends on
Secondary is L channel-R channel-mike-ground wire, and the plug connection of international standard is then L channel-R channel-ground wire-mike, therefore both marks
Accurate difference is that microphone pin is different from the position of ground wire pin, but, mobile audio interface communication equipment is exactly based on mike pin and hands
Machine carries out data interaction, and the design of internal circuit configuration is relevant to the position of mike pin, thus causes being applicable to national standard audio interface mobile phone
Mobile audio interface communication equipment cannot be applicable to the mobile phone of international standard audio interface, vice versa.As can be seen here, connect due to the audio frequency of mobile phone
There are two kinds of different standards in mouth, existing mobile audio interface communication equipment cannot be simultaneously suitable for both standards, thus limit handset audio
The scope of application of interface communicating device, have impact on the versatility of product.
Summary of the invention
In order to solve problem mentioned in background technology, the invention provides a kind of mobile audio interface communication equipment having from adaption function, logical
Cross therein from adaptive device realize circuit automatically switch so that mobile audio interface communication equipment is compatible with international standard and national standard, enhances
The versatility of product.
What the present invention provided have the mobile audio interface communication equipment from adaption function comprises and is connected to audio interface and functional circuit from adaptive device
Module；Wherein said audio interface comprises the first pin, the second pin, three-prong and the 4th pin, in described three-prong and the 4th pin
One is mike pin, and another is ground pin；Described comprise the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, a described MOS from adaptive device
Three-prong described in the grid of pipe is connected, drain electrode is connected with described 4th pin, source ground, the grid of described second metal-oxide-semiconductor and the described 4th
Pin is connected, drain electrode connects with described third phase, source ground.
In an alternate embodiment, described first pin or the second pin, described three-prong and described 4th pin are connected to described functional circuit mould
Block.
In an alternate embodiment, described further including the first resistance and the second resistance from adaptive device, wherein said three-prong is by described first electricity
Resistance is connected to the grid of described first metal-oxide-semiconductor, and described 4th pin is connected to the grid of described second metal-oxide-semiconductor by described second resistance.
In an alternate embodiment, the mobile audio interface communication equipment from adaption function that has of present invention offer further includes the 3rd resistance and the 4th electricity
Resistance, wherein said first pin passes through described 3rd resistance eutral grounding, and described second pin passes through described 4th pin ground connection.
In an alternate embodiment, described first metal-oxide-semiconductor and described second metal-oxide-semiconductor are N-channel enhancement mode metal-oxide-semiconductors.
The mobile audio interface communication equipment from adaption function that has that the present invention provides utilizes mike in mobile audio interface by self-reacting device
Bias voltage between pin and ground wire pin realizes circuit and automatically switches so that equipment can compatible national standard mobile audio interface and international mark
Accurate mobile audio interface, solves technical problem mentioned in background technology.
Accompanying drawing explanation
What Fig. 1 illustrated that the present invention one preferably implements to be provided has the electrical block diagram of the mobile audio interface communication equipment from adaption function；
Fig. 2 illustrates another electrical block diagram with mobile audio interface communication equipment from adaption function preferably implementing to be provided of the present invention.
Component symbol illustrates:
From adaptive device 10
First metal-oxide-semiconductor Q1
Second metal-oxide-semiconductor Q2
Audio interface Y
First pin Y1
Second pin Y2
Three-prong Y3
4th pin Y4
Functional circuit module 20
First resistance R1
Second resistance R2
3rd resistance R3
4th resistance R4
Detailed description of the invention
For making technical scheme and advantage thereof definitely and in detail, illustrate hereinafter with reference to diagram.
Refer to that Fig. 1, Fig. 1 illustrate that the present invention one preferably implements to be provided has the circuit knot of the mobile audio interface communication equipment from adaption function
Structure schematic diagram.Comprise be connected to as it is shown in figure 1, the present embodiment has the mobile audio interface communication equipment from adaption function from adaptive device 10
Audio interface Y and functional circuit module 20.It is described in detail below for each element and annexation thereof.
Specifically, audio interface Y comprises the first pin Y1, the second pin Y2, three-prong Y3 and the 4th pin Y4.Audio interface Y
The element that is attached with mobile phone of mobile audio interface communication equipment, four pins of audio interface Y respectively with four pins of mobile audio interface
Corresponding connected, as a example by the mobile audio interface meeting national standard, comprise left channel pin, R channel pin, microphone pin and ground wire successively
Pin, four pins of audio interface Y with the mobile audio interface communication equipment from adaption function in the present embodiment meet country's mark with aforementioned
The annexation of accurate mobile audio interface is: the first pin Y1 is connected with left channel pin, the second pin Y2 is connected with R channel pin, the
Three-prong Y3 is connected with microphone pin, the 4th pin Y4 is connected with ground wire pin, as described in the background art, and the sound of main flow mobile phone on the market
Frequently interface some make according to international standard, these mobile audio interfaces meeting international standard comprise left channel pin, the right side successively
Sound channel pin, wire pin and microphone pin, say, that meet the mobile audio interface of international standard and meet the handset audio of national standard
The difference of interface is microphone pin and the location swap of ground wire pin, consequently, it is possible to be connected with the mobile audio interface meeting international standard
Time, the three-prong Y3 of audio interface Y of mobile audio interface communication equipment is to be connected with ground wire pin, and the 4th pin Y4 is to draw with mike
Foot is connected, and other are identical with aforementioned connected mode, it can be seen that, national standard that no matter mobile audio interface performs or international standard, the 3rd manages
One in foot Y3 and the 4th pin Y4 is mike pin, and another is ground pin, say, that three-prong Y3 and the 4th pin
In Y4 one is that the microphone pin with mobile audio interface is connected, and another is connected with the ground wire of mobile audio interface, meanwhile, in this enforcement
In example, the first pin Y1, and three-prong Y3 and the 4th pin Y4 is connected to functional circuit module 20, with functional circuit module simultaneously
20 these pins being connected are to transmit for the data between mobile phone and mobile audio interface communication equipment, it is to be understood that in actual application
In, the pin for data interaction is the first pin Y1 that the left channel pin with mobile phone is connected, and the pin being connected with mobile microphone pin,
In embodiments of the invention, owing to three-prong Y3 and the 4th pin Y4 is likely to be connected with microphone pin, therefore the most first it is connected to merit
Can circuit module 20.It should be noted that in other embodiments of the present invention, owing to the R channel pin of mobile phone can be used for data transmission, therefore
The pin being connected with functional circuit module 20 can also be the second pin Y2, and the present invention is not restricted, in other words, at embodiments of the invention
In, that be connected with functional circuit module 20 is the first pin Y1 or the second pin Y2.
Comprising the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 from adaptive device 10, wherein the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 is
It it is N-channel enhancement mode metal-oxide-semiconductor.As it is shown in figure 1, the grid three-prong Y3 of the first metal-oxide-semiconductor Q1 is connected, drains and the 4th pin Y4
Connected, source ground, the grid of the second metal-oxide-semiconductor Q2 and the 4th pin Y4 are connected, drain electrode is connected with three-prong Y3, source ground.From
The operation principle of adaptive device 10 is, with the mobile audio interface being connected with the mobile audio interface communication equipment having in the present invention from adaption function
Meet be national standard as a example by, when the present embodiment provided have the mobile audio interface communication equipment from adaption function be connected with mobile phone time,
Between three-prong Y3 and the 4th pin Y4 produce bias voltage, bias voltage by the grid of three-prong Y3 incoming arrival the first metal-oxide-semiconductor Q1,
After the grid of the first metal-oxide-semiconductor Q1 and the malleation of drain electrode reach threshold value, the drain electrode of the first metal-oxide-semiconductor Q1 and source conduction, due to a MOS
The source ground of pipe Q1, drain electrode is connected with the 4th pin Y4, so when the drain electrode of the first metal-oxide-semiconductor Q1 and source conduction, the 4th pin Y4
The first metal-oxide-semiconductor Q1 ground connection will be passed through, consequently, it is possible to be connected to the 4th pin Y4 of mobile phone ground wire pin with equipment altogether, be connected to mobile phone
The three-prong Y3 of microphone pin is connected to functional circuit module 20, and what mobile phone and the present embodiment provided have the handset audio from adaption function connects
The functional circuit module 20 of port communications equipment just can carry out data interaction by the first pin Y1 and three-prong Y3.When the present embodiment equipment with
Meeting the mobile audio interface of international standard when being connected, produce bias voltage between three-prong Y3 and the 4th pin Y4, bias voltage is by the 4th
The grid of pin Y4 incoming arrival the second metal-oxide-semiconductor Q2, after the grid of the second metal-oxide-semiconductor Q2 and the malleation of drain electrode reach threshold value, drain electrode and source
Pole turns on, and due to the source ground of the second metal-oxide-semiconductor Q2, drain electrode is connected with three-prong Y3, thus ought the second metal-oxide-semiconductor Q2 drain electrode with
During source conduction, three-prong Y3 just can pass through the second metal-oxide-semiconductor Q2 ground connection, consequently, it is possible to be connected to the three-prong of mobile phone ground wire pin
With equipment altogether, the 4th pin Y4 being connected to mobile microphone pin is connected to functional circuit module 20 to Y3, and mobile phone provides with the present embodiment
The functional circuit module 20 with the mobile audio interface communication equipment from adaption function just can be by the first pin Y1 and the 4th pin Y4 number
According to alternately.As can be seen here, the present invention is by the bias voltage between the ingenious microphone pin utilizing mobile audio interface and ground wire pin, by certainly
Adaptive device 10 carries out circuit switching, so that equipment according to the type automatic switching line of the mobile audio interface connected, thus can extend
The suitability of equipment so that it is be not necessarily limited to the mobile phone of a kind of audio interface standard.Moreover, using from adaptive device 10 of the present embodiment is divided
Vertical device N-channel enhancement mode metal-oxide-semiconductor realizes, by pure hardware identification, have take up room little, transmission internal resistance is little, cost relative analog switch
The advantages such as scheme is low and switching mode relatively traditional approach is stable.
Functional circuit module 20 is the module for implementing mobile audio interface communication equipment actual functional capability, and it comes according to different product designs
Realize different functions, such as mobile phone card reader, be a kind of mobile audio interface communication equipment that can be carried out bank card payment by mobile phone, its merit
Data interaction can be carried out by mike pin and earphone pin with mobile phone by circuit module, the bank card information read is transmitted to mobile phone, to complete
The functions such as payment or inquiry.Embodiments of the invention primarily to solve circuit-switched relevant issues, the merit implemented with functional circuit module
Energy onrelevant, therefore be no longer specifically described at this.
In order to further be optimized the mobile audio interface communication equipment having from adaption function provided by the present invention, the present invention also provides for phase
The preferred embodiment answered, refers to Fig. 2, Fig. 2 and illustrates another having of preferably implementing to be provided of the present invention and lead to from the mobile audio interface of adaption function
The electrical block diagram of letter equipment.As in figure 2 it is shown, the present embodiment provided there is the mobile audio interface communication equipment from adaption function and figure
Embodiment difference shown in 1 is, further includes the first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4.
Specifically, the first resistance R1 is connected to three-prong Y3 and the grid of the first metal-oxide-semiconductor Q1, say, that three-prong Y3 leads to
Cross the first resistance R1 and be connected to the first metal-oxide-semiconductor Q1；Second resistance R2 is connected to the 4th pin Y4 and the second metal-oxide-semiconductor Q2, say, that
4th pin Y4 is connected to the second metal-oxide-semiconductor Q2 by the second resistance R2.Owing to the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 is to voltage
Ability to bear is limited, by setting up the first resistance R1 and the second resistance R2, circuit can carry out current limliting, thus prevent the first metal-oxide-semiconductor Q1 and
Two metal-oxide-semiconductor Q2 are because of the thermal breakdown of the excessive appearance of electric current and slow down the first metal-oxide-semiconductor Q1 and the aging speed of the second metal-oxide-semiconductor Q2 so that
One metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 can stablize and permanent work.
3rd resistance R3 is connected to the first pin Y1 and ground, say, that the first pin Y1 passes through the 3rd resistance R3 ground connection, the 4th circuit R4
It is connected to the second pin Y2 and ground, say, that the second pin Y2 passes through the 4th resistance R4 ground connection.In this way, can be the sound of mobile phone
Frequently signal is set up with reference to ground, stablizes input signal.
As can be seen here, in the present embodiment, by setting up the first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4 in circuit
Element protection is provided, optimizes signal transmission, thus optimize circuit performance, stabilize circuit structure.
It is understood that the type of electronic devices and components involved in the present invention and parameter all can be by those skilled in the art according to the actual need of product
Ask and choose, the scope that the present invention is comprised should be belonged to.
Claims (5)
1. the mobile audio interface communication equipment having from adaption function, it is characterised in that comprise and be connected to audio interface and function from adaptive device
Circuit module；Wherein said audio interface comprises the first pin, the second pin, three-prong and the 4th pin, described three-prong and the 4th
In pin one is mike pin, and another is ground pin；Described comprise the first metal-oxide-semiconductor and the second metal-oxide-semiconductor from adaptive device,
Three-prong described in the grid of described first metal-oxide-semiconductor is connected, drain electrode is connected with described 4th pin, source ground, described second metal-oxide-semiconductor
Grid be connected with described 4th pin, drain with described third phase even, source ground.
There is mobile audio interface communication equipment from adaption function the most as claimed in claim 1, it is characterised in that described first pin or the second pipe
Foot, described three-prong and described 4th pin are connected to described functional circuit module.
There is mobile audio interface communication equipment from adaption function the most as claimed in claim 1, it is characterised in that described further include from adaptive device
First resistance and the second resistance, wherein said three-prong is connected to the grid of described first metal-oxide-semiconductor by described first resistance, and the described 4th
Pin is connected to the grid of described second metal-oxide-semiconductor by described second resistance.
There is mobile audio interface communication equipment from adaption function the most as claimed in claim 1, it is characterised in that further include the 3rd resistance and the 4th
Resistance, wherein said first pin passes through described 3rd resistance eutral grounding, and described second pin passes through described 4th pin ground connection.
There is mobile audio interface communication equipment from adaption function the most as claimed in claim 1, it is characterised in that described first metal-oxide-semiconductor and described
Second metal-oxide-semiconductor is N-channel enhancement mode metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510379746.2A CN106331948A (en) | 2015-07-01 | 2015-07-01 | Mobile phone audio interface communication equipment with adaptation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510379746.2A CN106331948A (en) | 2015-07-01 | 2015-07-01 | Mobile phone audio interface communication equipment with adaptation function |
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| CN106331948A true CN106331948A (en) | 2017-01-11 |
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| CN201510379746.2A Pending CN106331948A (en) | 2015-07-01 | 2015-07-01 | Mobile phone audio interface communication equipment with adaptation function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112954537A (en) * | 2021-04-02 | 2021-06-11 | 广东朝阳电子科技股份有限公司 | Bluetooth headset input port expanding circuit |
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| US20150016624A1 (en) * | 2012-01-18 | 2015-01-15 | Tendyron Corporation | Audio interface adapter device and audio signal receiving apparatus |
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Address after: 214131 floor 10 and 11, building B, swan tower, Wuxi Software Park, No. 90, Jinghui East Road, Xinwu District, Wuxi City, Jiangsu Province Applicant after: Lanxin Technology Group Co., Ltd Address before: Wuxi District of Jiangsu city of Wuxi province Zhenze road 214131 No. 18 Wuxi Software Park, whale D Building Room 601 Applicant before: LONGSHINE TECHNOLOGY Co.,Ltd. |
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Application publication date: 20170111 |
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