CN207573585U - Double 4 sections of earphone interface circuits of standard - Google Patents

Abstract

The utility model discloses a kind of double standard earphone interface circuits, including left and right sound channels processing module, microphone processing module, earphone jack, have the first shrapnel successively from inside to outside in the earphone jack（A）, the second shrapnel（B）, third shrapnel（C）With the 4th shrapnel（D）, also with toggle switch（SW）First and second shrapnel is electrically connected L channel and right channel processing module, third and fourth shrapnel is electrically connected toggle switch, under the transformation of toggle switch third and fourth respectively with microphone processing module and connect or third and fourth connect respectively with ground and microphone processing module；The utility model possesses double standards, can carry out selection adaptation according to current earphone used interface standard, using after this circuit can Uniting manufacture PCB layout, to meet different clients demand；Have the advantages that simple in structure, cheap, reliability is high, versatile simultaneously.

Description

Double 4 sections of earphone interface circuits of standard

Technical field

The utility model is related to earphone interface circuits more particularly to one kind to possess double standards, can be according to current earphone institute 4 sections of earphone interface circuits of double standards of selection adaptation are carried out with interface standard.

Background technology

The 4 sections of earphones used on mobile phone or tablet, there are mainly two types of standards：CTIA and OMTP.In the master of mobile phone or tablet Plate often can only select a kind of standard to carry out curing production when design.But after mobile phone or tablet are produced, to sell to All over the world, different zones, different clients have receiver J-Horner different selections.In existing technology, PCB is often changed Layout meets requirement of the client to different receiver J-Horners, therefore to devote a tremendous amount of time to handle this problem.Cause This, meets need of the client to different receiver J-Horners it is urgent to provide a kind of method in the case where not changing PCB layout in the industry It asks.

Utility model content

The utility model is the above problem of the prior art to be solved, and proposes 4 sections of earphone interface circuits of double standards.

In order to solve the above technical problems, the utility model proposes technical solution be a kind of double standard earphone interfaces electricity of design Road, including L channel processing module, right channel processing module, microphone processing module, earphone jack, in the earphone jack by It is interior and outer successively with the first shrapnel, the second shrapnel, third shrapnel and the 4th shrapnel, also with toggle switch, first He Second shrapnel is electrically connected L channel and right channel processing module, and the third and fourth shrapnel is electrically connected toggle switch, Under the transformation of toggle switch third and fourth respectively with microphone processing module and connect or third and fourth difference It is connect with ground and microphone processing module.

The toggle switch uses 6 pin double-pole double throw type toggle switches, the third shrapnel electrical connection toggle switch 5th foot, the crus secunda of the 4th shrapnel electrical connection toggle switch, the first foot of the toggle switch and the 4th foot connection institute State microphone processing module, the third foot of toggle switch and the 6th foot ground connection；In the toggle switch first switch state One foot is connected with crus secunda, the 5th foot and the 6th foot connect, the third foot and second in the toggle switch second switch state Foot connection, the 5th foot and the connection of the 4th foot.

Compared with prior art, the utility model possesses double standards, can according to current earphone used interface standard and into Row selection adaptation, using after this circuit can Uniting manufacture PCB layout, to meet different clients demand；There is knot simultaneously The advantages of structure is simple, cheap, reliability is high, versatile.

Description of the drawings

Fig. 1 is the plug schematic diagram using CTIA interface standards；

Fig. 2 is the plug schematic diagram using OMTP interface standards；

Fig. 3 is the utility model preferred embodiment circuit theory schematic diagram.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, is described in further detail the utility model.It should be appreciated that specific embodiment described herein is used only for explaining this Utility model is not used to limit the utility model.

Fig. 1 shows the plug using CTIA interface standards, and Fig. 2 shows the plug for using OMTP interface standards, the two Difference mutually reverse with the link position on microphone and ground.The earphone order of connection of CTIA is（It is inside from earphone heads）：It is left Sound channel-right channel-ground wire-microphone, the earphone order of connection of OMTP are（It is inside from earphone heads）：L channel-right channel-Mike Wind-ground wire.The socket circuit of existing mobile phone or tablet can only be adapted to one of which plug.A kind of conversion electricity of the utility model design Road can be adapted to the plug of two kinds of standards.

The utility model discloses a kind of double standard earphone interface circuits, referring to Fig. 3, including L channel processing module, Right channel processing module, microphone processing module, earphone jack have the first shrapnel in the earphone jack successively from inside to outside A, the second shrapnel B, third shrapnel C and the 4th shrapnel D, also with toggle switch SW, first and second shrapnel is electrically connected respectively L channel and right channel processing module are connect, the third and fourth shrapnel is electrically connected toggle switch, makees in the conversion of toggle switch With lower third and fourth respectively with microphone processing module and connect or third and fourth is handled respectively with ground and microphone Module connects.

In the preferred embodiment, the toggle switch SW uses 6 pin double-pole double throw type toggle switches, the third shrapnel C is electrically connected the 5th foot of toggle switch, the crus secunda of the 4th shrapnel D electrical connection toggle switch, and the of the toggle switch One foot and the 4th foot connect the microphone processing module, the third foot of toggle switch and the 6th foot ground connection；It is stirred out described The first foot is connected with crus secunda in the first switch state of pass, the 5th foot and the 6th foot connect, in the toggle switch second switch Third foot is connected with crus secunda in state, the 5th foot and the 4th foot connect.

This circuit operation principle is described in detail referring now to Fig. 3：

When needing 4 sections of plugs using CTIA standards, toggle switch SW to the left, into first switch state, 1 and 2 The foot of foot closure, 5 and 6 is closed, and after 4 sections of earphones inject the earphone jack of mainboard at this time, just meets the sequence requirement of CTIA：Zuo Sheng Road-right channel-ground wire-microphone；When needing 4 sections of plugs using OMTP standards, toggle switch SW, is opened into second to the right Off status, the foot of 3 and 2 feet closure, 5 and 4 are closed, and after 4 sections of earphones inject the earphone jack of mainboard at this time, just meet the suitable of OMTP Sequence requirement：L channel-right channel-microphone-ground wire.This circuit is easy to be reliable, without complicated logic judging circuit, cost It will not increase, reliability is high, in actual use, a mark is done in the rear shell of machine, the function can be realized；It is very suitable Close the machine with 4 sections of earphones.

Above example is by way of example only, non-to provide constraints.It is any without departing from the application spirit and scope, and to it The equivalent modifications of progress or change, shall be included in the scope of claims of this application.

Claims (2)

1. a kind of double standard earphone interface circuits, including L channel processing module, right channel processing module, microphone processing mould Block, earphone jack, it is characterised in that：There is the first shrapnel successively from inside to outside in the earphone jack（A）, the second shrapnel（B）、 Third shrapnel（C）With the 4th shrapnel（D）, also with toggle switch（SW）, first and second shrapnel is electrically connected left sound Road and right channel processing module, the third and fourth shrapnel are electrically connected toggle switch, under the transformation of toggle switch Three and the 4th respectively with microphone processing module and connect or third and fourth connects respectively with ground and microphone processing module It connects.

2. double standard earphone interface circuits as described in claim 1, it is characterised in that：The toggle switch（SW）Using 6 pipes Foot double-pole double throw type toggle switch, the third shrapnel（C）It is electrically connected the 5th foot of toggle switch, the 4th shrapnel（D）Electricity The crus secunda of toggle switch is connected, the first foot of the toggle switch and the 4th foot connect the microphone processing module, stir The third foot of switch and the 6th foot ground connection；In the toggle switch first switch state the first foot connected with crus secunda, the 5th Foot and the connection of the 6th foot, in the toggle switch second switch state third foot connected with crus secunda, the 5th foot and the 4th foot Connection.