CN202310052U - Earphone socket circuit - Google Patents
Earphone socket circuit Download PDFInfo
- Publication number
- CN202310052U CN202310052U CN 201120443837 CN201120443837U CN202310052U CN 202310052 U CN202310052 U CN 202310052U CN 201120443837 CN201120443837 CN 201120443837 CN 201120443837 U CN201120443837 U CN 201120443837U CN 202310052 U CN202310052 U CN 202310052U
- Authority
- CN
- China
- Prior art keywords
- switch element
- pin
- earphone
- switch
- output pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
Abstract
The utility model discloses an earphone socket circuit, which comprises a first pin (1), a second pin (6), a left sound track audio output pin (5), a right sound track audio output pin (2), four switching components and a pull-up resistor (8). The second pin (6) is connected with a microphone (MIC) through a first switching component (71) and connected with the ground through a second switching component (72). The first pin (1) is connected with the MIC through a third switching component (73) and connected with the ground through a fourth switching component (74). The pull-up resistor (8) is connected with the left sound track audio output pin (5) or the right sound track audio output pin (2), and level of a connection position is high level. A detecting signal end is connected with the left sound track audio output pin (5) or the right sound track audio output pin (2) connected with the pull-up resistor to be used for detecting changes of the level of the connection position. By means of the earphone socket circuit, compatibility of earphones is achieved.
Description
Technical field
The utility model relates to the communications field, in particular to a kind of earphone socket circuit.
Background technology
Along with development of electronic technology; Portable equipment has been widely used each corner of the modern life, becomes indispensable important tool in the live and work, and earphone has also become indispensable subsidiary article on the various portable equipments; For listening to the music at any time, receiving calls etc. offers convenience.But there are two kinds in the standard of earphone in the market: U.S. mark earphone and Europe superscript earphone.Fig. 1 is the sketch map according to Europe superscript headset plug and corresponding earphone socket in the correlation technique, and Fig. 2 is the sketch map according to correlation technique Sino-U.S. mark headset plug and corresponding earphone socket.
Along with the internationalization of portable device market, require the portable equipment earphone of these two kinds of standards of compatibility simultaneously, there is the circuit of compatible two kinds of earphones in the prior art.Fig. 3 is the sketch map according to the earphone compatible circuit in the correlation technique; As shown in Figure 3; Done the compatibility design of U.S. mark earphone and Europe superscript earphone in the circuit design, come compatible dissimilar earphones through adjustment paster material, in the market of using the Europe superscript earphone; R1 and R4 paste 0ohm resistance during paster, and R2 and R3 do not paste; In the market of using U.S. mark earphone, paster is that R2 and R3 paste 0ohm resistance, and R1 and R4 do not paste.
Yet the versatility of existing compatible circuit is relatively poor, for the user; Though the design of existing compatible circuit can compatible two kinds of earphone standards,, the final portable product of producing through this compatible circuit can only be supported a kind of earphone of standard; Thereby cause its versatility relatively poor, and, the market different as far as the earphone demand; Because the portable product mainboard can not shared mainboard, causes the versatility of portable product mainboard also poor.
The utility model content
To the problem of the versatility difference that has compatible circuit now, the utility model provides a kind of earphone socket circuit, to address the above problem at least.
An aspect according to the utility model provides a kind of earphone socket circuit, comprises first pin one; Second pin 6; L channel audio frequency output pin 5, right audio channel output pin 2 also comprises: four switch elements; Second pin 6 is connected to MIC through first switch element 71, is connected to ground through second switch element 72; First pin one is connected to MIC through the 3rd switch unit 73, is connected to ground through the 4th switch element 74; Wherein, the initial condition of said four switch elements is off-state, said four switch elements cut-off the variation that is controlled by the detected level of detection signal end; Pull-up resistor 8 is connected to said L channel audio frequency output pin 5 or said right audio channel output pin 2, and wherein, the level of said pull-up resistor and said L channel audio frequency output pin 5 or said right audio channel output pin 2 junctions is a high level; Said detection signal end connects with the said L channel audio frequency output pin 5 that is connected said pull-up resistor or said right audio channel output pin 2, is used to detect the variation of the level of junction.
Preferably, in user mode, said first switch element 71 is in opening state with said the 4th switch element 74, and said second switch element 72 is in off-state with said the 3rd switch element 73; Perhaps, said first switch element 71 is in off-state with said the 4th switch element 74, and said second switch element 72 is in opening state with said the 3rd switch element 73.
Preferably, said four switch elements are metal-oxide-semiconductor or analog switch.
Preferably, said four switches are four single-pole single-throw switch (SPST)s or two groups of single-pole double-throw switch (SPDT)s.
Preferably, the resistance of said pull-up resistor 8 is 10K ohm.
Pass through the utility model; Switch element is applied in the circuit; Change the closed and disconnected state that comes the control switch element through the input end signal; Thereby make the earphone that final earphone socket product can compatible two kinds of various criterions, solved the relatively poor problem of compatible circuit versatility in the prior art, so reached the earphone socket of portable product can compatible U.S. mark earphone and the effect of Europe superscript earphone.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the sketch map according to Europe superscript headset plug and corresponding earphone socket in the correlation technique;
Fig. 2 is the sketch map according to correlation technique Sino-U.S. mark headset plug and corresponding earphone socket;
Fig. 3 is the sketch map according to the earphone compatible circuit in the correlation technique;
Fig. 4 is the sketch map according to the earphone socket circuit of the utility model embodiment;
Fig. 5 is the sketch map according to the another kind of circuit socket circuit of the utility model embodiment;
Fig. 6 is the sketch map according to the earphone socket circuit of the utility model preferred embodiment;
Fig. 7 is the flow chart according to the implementation method of the earphone socket circuit compatibility earphone of the utility model.
Embodiment
Hereinafter will and combine embodiment to specify the utility model with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Because what use in the compatible design circuit of the prior art is Chip-R, makes final product can only meet a kind of standard earphone, therefore, makes that the versatility of existing compatible circuit is relatively poor.In order to solve the problem of the versatility difference that has compatible circuit now; In the utility model; A kind of earphone socket circuit is provided; Through in circuit, using switch element, change the closed and disconnected state that comes the control switch element through the input end signal, thereby make the earphone that final earphone socket product can compatible two kinds of various criterions.
Fig. 4 is the sketch map according to the earphone socket circuit of the utility model embodiment, and is as shown in Figure 4, and this circuit comprises first pin one; Second pin 6; L channel audio frequency output pin 5, right audio channel output pin 2, the first headset detection ports 3; The second headset detection port 4 also comprises: four switch elements and pull-up resistor 8.Wherein, second pin 6 is connected to MIC through first switch element 71, is connected to ground through second switch element 72; First pin one is connected to MIC through the 3rd switch unit 73, is connected to ground through the 4th switch element 74; Wherein, the initial condition of four switch elements is off-state, four switch elements cut-off the variation that is controlled by the detected level of detection signal end; Pull-up resistor 8 is connected to right audio channel output pin 2, and wherein, the level of pull-up resistor and right audio channel output pin 2 junctions is a high level; The detection signal end connects with the right audio channel output pin that is connected pull-up resistor 2, is used to detect the variation of the level of junction.
Through above-mentioned earphone socket circuit; Switch element is applied in the circuit; Change the closed and disconnected state that comes the control switch element through the input end signal; Thereby make the earphone that earphone socket can compatible two kinds of various criterions, solved the relatively poor problem of compatible circuit versatility in the prior art, so reached the earphone socket of portable product can compatible U.S. mark earphone and the effect of Europe superscript earphone.
When foregoing circuit was in user mode, the operating state of four switch elements comprised: first switch element 71 and the 4th switch element 74 are in opening state, and second switch element 72 and the 3rd switch element 73 are in off-state; Perhaps, first switch element 71 and the 4th switch element 74 are in off-state, and second switch element 72 and the 3rd switch element 73 are in opening state.
In above-mentioned earphone socket circuit, four switch elements can be metal-oxide-semiconductor or analog switch.
In above-mentioned earphone socket circuit, four switches can be four single-pole single-throw switch (SPST)s or two groups of single-pole double-throw switch (SPDT)s.
In above-mentioned earphone socket circuit, the resistance of pull-up resistor 8 can be 10K ohm, need to prove, the effect of pull-up resistor here is with respect to 32 ohm of the resistances of earphone level to be pulled to any resistance of high level, for example, can also be 5K, 8K etc.
Need to prove; Pull-up resistor 8 also can be connected to L channel audio frequency output pin 5, and Fig. 5 is the sketch map according to the another kind of circuit socket circuit of the utility model embodiment, and is as shown in Figure 5; In the present embodiment; The difference of this socket circuit and socket circuit shown in Figure 4 is: pull-up resistor 8 is connected to L channel audio frequency output pin 5, and wherein, pull-up resistor 8 is a high level with the level of L channel audio frequency output pin 5 junctions; The detection signal end connects with the L channel audio frequency output pin that is connected pull-up resistor 5, is used to detect the variation of the level of junction.Other element is identical with circuit element shown in Figure 4, repeats no more at this.
In this preferred embodiment, a kind of compatible U.S. mark earphone and Europe superscript earphone socket circuit and its implementation are provided, this circuit comprises: an earphone socket, some switch control units, a pull-up resistor that is connected on earphone socket L channel or the R channel.Fig. 6 is according to the sketch map of the earphone socket circuit of the utility model preferred embodiment, below in conjunction with Fig. 6 the implementation method of this circuit is described.
As shown in Figure 6, comprise earphone socket connector J1, switch control element S1, S2, S3, S4 (being equivalent to the switch element 71,72,73,74 among Fig. 4 and Fig. 5); Wherein, switch element can have multiple mode to exist, like metal-oxide-semiconductor; Analog switch or the like; Switch form can be varied, like 4 single-pole single-throw switch (SPST)s, perhaps 2 groups of single-pole double-throw switch (SPDT)s or the like.Be connected on earphone socket the 2nd pin (promptly; Right audio channel output pin 2; The pull-up resistor R5 (being equivalent to pull-up resistor 8) of the 10K ohm corresponding earphone R channel R_OUT), be connected on the headset type detection signal HEADSET_TYPE_DET (being equivalent to the detection signal end) on earphone socket J301 the 2nd pin and accomplish switch control and the control module (need to prove that control module does not illustrate in the drawings) of detection signal judgement.
The implementation procedure of above-mentioned earphone socket circuit is to be 32 ohm of ohm through the left and right sound channels earth impedance that utilizes earphone; And control the physics break-make over the ground of earphone socket 1 pin and 6 pin respectively through the switch element circuit; When the some pins in detecting these two pins connect over the ground; The impedance over the ground of earphone left and right sound channels becomes 32ohm; Make that the headset type detection signal that is connected on earphone socket L channel or the R channel is effective, think that promptly this pin is the ground pin of earphone, another pin is the MIC pin of earphone.Thereby correct control switch unit guarantees that head circuit is operated in correct pattern.
Fig. 7 is that as shown in Figure 7, this flow process comprises the steps: according to the flow chart of the implementation method of the earphone socket circuit compatibility earphone of the utility model
When earphone did not insert, the initial state of circuit was: headset type detection signal HEADSET_TYPE_DET keeps high level signal through drawing on the 10K resistance R 5, and each switch element is in off-state.Because the impedance of 32ohm is arranged between the R channel of earphone and the ground terminal of earphone; After so earphone inserts; Impedance between the R channel pin two of 1 pin of earphone socket or 6 pin and earphone will become 32ohm, and HEADSET_TYPE_DET drags down with the headset type detection signal.
Step S701 inserts earphone.
Step S702, close switch element S4 makes 6 pin ground connection of earphone socket.
Step S703, whether the level of judging headset type detection signal HEAD_TYPE_DET step-down, if step-down, execution in step S704 then, otherwise, execution in step S706.
Step S704, HEADSET_TYPE_DET signal explain the ground pin of the corresponding earphone of 6 pins of earphone socket by high step-down, and judging and inserting earphone is the Europe superscript earphone.
Step S705, close switch element S1 makes 5 pins of earphone socket connect the MIC signal, circuit working is at the Europe superscript headset mode.
Step S706, if after the switch element S4 closure, HEADSET_TYPE_DET is a high level still, explain 6 pins of earphone socket corresponding be not the ground pin of earphone, what judge insertion is non-Europe superscript earphone.
Step S707, cut-off switch element S4, earphone socket 6 pins are connected disconnection with ground.
Step S708, close switch element S2 makes 5 pins of earphone socket be connected with ground.
Step S709 judges whether step-down of HEADSET_TYPE_DET signal, if the HEADSET_TYPE_DET signal by high step-down, execution in step S710, otherwise, execution in step S712.
Step S710, HEADSET_TYPE_DET signal explain the ground pin of the corresponding earphone of 5 pins of earphone socket by high step-down, and what judge insertion is U.S. mark earphone.
Step S711, close switch element S3, circuit working is marked headset mode in U.S.A.
Step S712, when HEAD_TYPE_DET is a high level still, the earphone of judging insertion is non-standard earphone, neither the Europe superscript earphone neither U.S. mark earphone.
Through above-mentioned steps, can detect the type of inserting earphone, thereby the control switch element is operated in head circuit and the headset type that the inserts pattern that is complementary.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (9)
1. an earphone socket circuit comprises first pin (1), second pin (6), and L channel audio frequency output pin (5), right audio channel output pin (2) is characterized in that, also comprises:
Four switch elements, second pin (6) is connected to MIC through first switch element (71), is connected to ground through second switch element (72); First pin (1) is connected to MIC through the 3rd switch unit (73), is connected to ground through the 4th switch element (74); Wherein, the initial condition of said four switch elements is off-state, said four switch elements cut-off the variation that is controlled by the detected level of detection signal end;
Pull-up resistor (8); Be connected to said L channel audio frequency output pin (5) or said right audio channel output pin (2); Wherein, the level of said pull-up resistor and said L channel audio frequency output pin (5) or said right audio channel output pin (2) junction is a high level;
Said detection signal end connects with the said L channel audio frequency output pin (5) that is connected said pull-up resistor or said right audio channel output pin (2), is used to detect the variation of the level of junction.
2. circuit according to claim 1 is characterized in that, in user mode, said first switch element (71) is in opening state with said the 4th switch element (74), and said second switch element (72) is in off-state with said the 3rd switch element (73); Perhaps, said first switch element (71) is in off-state with said the 4th switch element (74), and said second switch element (72) is in opening state with said the 3rd switch element (73).
3. circuit according to claim 1 and 2 is characterized in that, said four switch elements are metal-oxide-semiconductor or analog switch.
4. circuit according to claim 1 and 2 is characterized in that, said four switches are four single-pole single-throw switch (SPST)s or two groups of single-pole double-throw switch (SPDT)s.
5. circuit according to claim 3 is characterized in that, said four switches are four single-pole single-throw switch (SPST)s or two groups of single-pole double-throw switch (SPDT)s.
6. circuit according to claim 1 and 2 is characterized in that, the resistance of said pull-up resistor (8) is 10K ohm.
7. circuit according to claim 3 is characterized in that, the resistance of said pull-up resistor (8) is 10K ohm.
8. circuit according to claim 4 is characterized in that, the resistance of said pull-up resistor (8) is 10K ohm.
9. circuit according to claim 5 is characterized in that, the resistance of said pull-up resistor (8) is 10K ohm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120443837 CN202310052U (en) | 2011-11-10 | 2011-11-10 | Earphone socket circuit |
| PCT/CN2012/076726 WO2013067812A1 (en) | 2011-11-10 | 2012-06-11 | Headset socket circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120443837 CN202310052U (en) | 2011-11-10 | 2011-11-10 | Earphone socket circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202310052U true CN202310052U (en) | 2012-07-04 |
Family
ID=46378859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120443837 Expired - Fee Related CN202310052U (en) | 2011-11-10 | 2011-11-10 | Earphone socket circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202310052U (en) |
| WO (1) | WO2013067812A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102833649A (en) * | 2012-08-17 | 2012-12-19 | 惠州Tcl移动通信有限公司 | Earphone interface circuit and mobile communication device |
| CN102882090A (en) * | 2012-10-15 | 2013-01-16 | 信雅达系统工程股份有限公司 | Device compatible with earphone interfaces |
| CN102969633A (en) * | 2012-11-30 | 2013-03-13 | 北京小米科技有限责任公司 | Conversion device |
| CN103052004A (en) * | 2012-11-22 | 2013-04-17 | 北京小米科技有限责任公司 | Signal receiving device, earphone and conversion joint |
| CN103414981A (en) * | 2013-07-17 | 2013-11-27 | 天地融科技股份有限公司 | Device, method and terminal for recognizing audio interface pins |
| WO2014012234A1 (en) * | 2012-07-19 | 2014-01-23 | 环汇系统有限公司 | Audio control system for electronic device and control method thereof |
| CN104700513A (en) * | 2013-12-06 | 2015-06-10 | 牛毅 | Audio-interface self-adaptation circuit, cellphone card reader and audio-interface self-adaptation method |
| CN105120390A (en) * | 2015-08-31 | 2015-12-02 | 努比亚技术有限公司 | Headphone socket, headphone plug and electronic device |
| CN107396226A (en) * | 2017-08-23 | 2017-11-24 | 努比亚技术有限公司 | A kind of earphone compatible circuit, mobile terminal and electronic system |
| WO2017211012A1 (en) * | 2016-06-08 | 2017-12-14 | 中兴通讯股份有限公司 | Earpiece plug, audio jack, and mobile terminal |
| CN108810751A (en) * | 2018-07-26 | 2018-11-13 | 合肥联宝信息技术有限公司 | A kind of circuit and electronic equipment of electronic components for identification |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1728082A (en) * | 2005-07-29 | 2006-02-01 | 上海贝豪通讯电子有限公司 | Method for raising versatility of earphone interface |
| TW201120639A (en) * | 2009-12-04 | 2011-06-16 | Chih-Ming Tsao | Input device for switching multiple computer devices. |
| CN102035911A (en) * | 2010-07-08 | 2011-04-27 | 中兴通讯股份有限公司 | Device and method for accessing earphone of mobile phone |
| CN102164263B (en) * | 2011-03-08 | 2012-09-05 | 华为终端有限公司 | Device and method of audio/video signal transmission interface |
-
2011
- 2011-11-10 CN CN 201120443837 patent/CN202310052U/en not_active Expired - Fee Related
-
2012
- 2012-06-11 WO PCT/CN2012/076726 patent/WO2013067812A1/en active Application Filing
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014012234A1 (en) * | 2012-07-19 | 2014-01-23 | 环汇系统有限公司 | Audio control system for electronic device and control method thereof |
| CN102833649B (en) * | 2012-08-17 | 2016-02-17 | 惠州Tcl移动通信有限公司 | A kind of earphone interface circuit and mobile communication equipment |
| CN102833649A (en) * | 2012-08-17 | 2012-12-19 | 惠州Tcl移动通信有限公司 | Earphone interface circuit and mobile communication device |
| CN102882090A (en) * | 2012-10-15 | 2013-01-16 | 信雅达系统工程股份有限公司 | Device compatible with earphone interfaces |
| CN102882090B (en) * | 2012-10-15 | 2015-05-13 | 信雅达系统工程股份有限公司 | Device compatible with earphone interfaces |
| CN103052004A (en) * | 2012-11-22 | 2013-04-17 | 北京小米科技有限责任公司 | Signal receiving device, earphone and conversion joint |
| CN102969633A (en) * | 2012-11-30 | 2013-03-13 | 北京小米科技有限责任公司 | Conversion device |
| CN102969633B (en) * | 2012-11-30 | 2015-10-07 | 小米科技有限责任公司 | A kind of conversion equipment |
| CN103414981A (en) * | 2013-07-17 | 2013-11-27 | 天地融科技股份有限公司 | Device, method and terminal for recognizing audio interface pins |
| WO2015007170A1 (en) * | 2013-07-17 | 2015-01-22 | 天地融科技股份有限公司 | Apparatus and method for identifying audio interface pin, and terminal |
| CN104700513A (en) * | 2013-12-06 | 2015-06-10 | 牛毅 | Audio-interface self-adaptation circuit, cellphone card reader and audio-interface self-adaptation method |
| CN104700513B (en) * | 2013-12-06 | 2017-04-26 | 牛毅 | Audio-interface self-adaptation circuit, cellphone card reader and audio-interface self-adaptation method |
| CN105120390A (en) * | 2015-08-31 | 2015-12-02 | 努比亚技术有限公司 | Headphone socket, headphone plug and electronic device |
| WO2017211012A1 (en) * | 2016-06-08 | 2017-12-14 | 中兴通讯股份有限公司 | Earpiece plug, audio jack, and mobile terminal |
| CN107396226A (en) * | 2017-08-23 | 2017-11-24 | 努比亚技术有限公司 | A kind of earphone compatible circuit, mobile terminal and electronic system |
| CN108810751A (en) * | 2018-07-26 | 2018-11-13 | 合肥联宝信息技术有限公司 | A kind of circuit and electronic equipment of electronic components for identification |
| CN108810751B (en) * | 2018-07-26 | 2021-06-08 | 合肥联宝信息技术有限公司 | Circuit for identifying electronic accessory and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013067812A1 (en) | 2013-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20161110 |