CN201898602U - Passive sound box interface of mobile phone - Google Patents
Passive sound box interface of mobile phone Download PDFInfo
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- CN201898602U CN201898602U CN2010206811549U CN201020681154U CN201898602U CN 201898602 U CN201898602 U CN 201898602U CN 2010206811549 U CN2010206811549 U CN 2010206811549U CN 201020681154 U CN201020681154 U CN 201020681154U CN 201898602 U CN201898602 U CN 201898602U
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- power amplifier
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Abstract
The utility model relates to a mobile phone interface, in particular to a passive sound box interface of a mobile phone, which comprises a central processing unit (CPU) and an earphone socket. The passive sound box interface of the mobile phone is characterized in that a three-section-type earphone, a four-section-type earphone or a passive sound box can be inserted into the earphone socket, the CPU is respectively connected with a built-in horn power amplifier circuit, an earphone socket interface circuit and an external passive sound box power amplifier circuit, the built-in horn power amplifier circuit is connected with a built-in horn, and the external passive sound box power amplifier circuit is connected with the passive sound box through the earphone socket. The passive sound box interface of the mobile phone has the advantages that the small passive sound box can be directly connected with the earphone socket of the mobile phone, the passive sound box is not required to be connected with an external power supply, the volume is small, the appearance is attractive and the passive sound box is convenient to carry; and by adopting the design, the output power is ensured to be high enough, the situation that a user uses the earphone or the sound box can be automatically recognized, and the sound quality and the sound volume are very good in practical use.
Description
Technical field
The utility model relates to a kind of handset port, is specially a kind of mobile phone passive loudspeaker box interface.
Background technology
Present amusement mobile phone generally leaves the interface of external earphone/sound equipment, but generally can only be connected to the source audio amplifier, and active audio amplifier needs external power supply or from charged pool, volume carries inconvenience greatly.The cellphone subscriber runs into such situation through regular meeting: download the song of oneself liking from the Internet; but because volume is inconsistent, think that sound is little when listening a certain first song, it is too big that volume is heightened back discovery volume when next sing; distorsion occurred, frequent adjustment volume is very much a trouble.In addition, general cellphone subscriber also likes big volume long-time play music, but because power output is too high, damages loud speaker easily, and the not high electric power flying power that allows especially of the operating efficiency of common power amplifier is had too many difficulties to cope with.
The utility model content
At problems of the prior art, the purpose of this utility model is to provide a kind of technical scheme of mobile phone passive loudspeaker box interface.
Described a kind of mobile phone passive loudspeaker box interface, comprise CPU processor, earphone socket, it is characterized in that to insert in the described earphone socket 3 segmentation earphones, 4 segmentation headsets, passive loudspeaker box, described CPU processor connects built-in loudspeaker power amplifier, earphone socket interface circuit, external passive audio amplifier power amplifier respectively, built-in loudspeaker power amplifier is connected with built-in loudspeaker, and external passive audio amplifier power amplifier links to each other with passive loudspeaker box by earphone socket.
Described a kind of mobile phone passive loudspeaker box interface is characterized in that described CPU processor connects microphone MIC, receiver, FM or TV source of sound respectively by the corresponding interface.
Described a kind of mobile phone passive loudspeaker box interface, it is characterized in that in the described earphone socket interface circuit, 1 pin of earphone socket and 5 pin short circuits, 1 pin connects the Speaker-end of external passive audio amplifier power amplifier, 1 pin connects the MP3_HL end of earphone left and right acoustic channels circuit behind inductance B101,1 pin is through diode V101 ground connection; 2 pin and 6 pin short circuits, 2 pin connect the Speaker+ end of external passive audio amplifier power amplifier, and 2 pin are through resistance R 114 ground connection, and 2 pin are through diode V102 ground connection, and 2 pin connect the MP3_HR end of earphone left and right acoustic channels circuit behind inductance B100; 3 pin and 4 pin disconnect, and 3 pin are through diode V100 ground connection, and 3 pin connect the MIC_H end of earphone socket state detection circuit through inductance B102; 4 pin are through resistance R 113, inductance B103 ground connection; 6 pin meet power vd D through resistance R 110, and 6 pin connect the CPU processor through resistance R 103.
Described a kind of mobile phone passive loudspeaker box interface is characterized in that the sound source signal after described CPU processor will be handled is delivered to external passive audio amplifier power amplifier, and the signal after external passive audio amplifier power amplifier will be handled is delivered to the passive loudspeaker box that links to each other with earphone socket.
Described a kind of mobile phone passive loudspeaker box interface is characterized in that the sound source signal after described CPU processor will be handled is delivered to built-in loudspeaker power amplifier, and the signal after built-in loudspeaker power amplifier will be handled send built-in loudspeaker.
Described a kind of mobile phone passive loudspeaker box interface is characterized in that the sound source signal after described CPU processor will be handled is delivered to earphone left and right acoustic channels circuit, earphone left and right acoustic channels circuit to signal processing after ear sending machine transplanting of rice seated connection mouth circuit output.
Described a kind of mobile phone passive loudspeaker box interface is characterized in that described CPU processor detects the type of earphone socket place external equipment by the earphone socket state detection circuit.
Above-mentioned a kind of mobile phone passive loudspeaker box interface, the passive loudspeaker box of connection small outside the earphone socket place of mobile phone can be directly, this audio amplifier dispense with outer connecting power, small appearance looks elegant is easy to carry; This design guarantees that enough big power output is arranged, and what can discern user's use automatically is earphone or audio amplifier, and tonequality, volume all have good effect in the practical application.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the schematic diagram of the utility model earphone socket interface circuit;
Fig. 3 is the schematic diagram of the utility model external passive audio amplifier power amplifier;
Fig. 4 is the schematic diagram of the utility model earphone socket state detection circuit;
Fig. 5 is the schematic diagram of the utility model earphone left and right acoustic channels circuit;
Fig. 6 is the schematic diagram of the utility model CPU processor interface and control signal.
Embodiment
Below in conjunction with Figure of description the utility model is described further:
As shown in Figure 1, a kind of mobile phone passive loudspeaker box interface, comprise CPU processor 4, earphone socket, earphone socket is 3.5 cun, can insert 3 segmentation earphones 8 in the earphone socket, 4 segmentation headsets 9, passive loudspeaker box 10, described CPU processor 4 connects built-in loudspeaker power amplifier 5 respectively, earphone socket interface circuit 7, external passive audio amplifier power amplifier 11, built-in loudspeaker power amplifier 5 is connected with built-in loudspeaker 6, external passive audio amplifier power amplifier 11 links to each other with passive loudspeaker box 10 by earphone socket, and CPU processor 4 connects microphone MIC1 respectively by the corresponding interface, receiver 3, FM or TV source of sound 2.
Source of sound can be delivered to external equipments such as receiver 3, built-in loudspeaker 6, earphone, passive loudspeaker box 10 after handling through CPU, tells two paths of signals on the path of earphone and delivers to built-in loudspeaker power amplifier 5 and external passive audio amplifier power amplifier 11 delivering to.Sound source signal after CPU processor 4 will be handled is delivered to external passive audio amplifier power amplifier 11, external passive audio amplifier power amplifier 11 as shown in Figure 3, the signal after external passive audio amplifier power amplifier 11 will be handled is delivered to the passive loudspeaker box 10 that links to each other with earphone socket; Sound source signal after CPU processor 4 will be handled is delivered to built-in loudspeaker power amplifier 5, and the signal after built-in loudspeaker power amplifier 5 will be handled send built-in loudspeaker 6; Sound source signal after CPU processor 4 will be handled is delivered to earphone left and right acoustic channels circuit, earphone left and right acoustic channels circuit as shown in Figure 5, earphone left and right acoustic channels circuit to signal processing after ear sending machine transplanting of rice seated connection mouth circuit 7 output; CPU processor 4 detects the type of earphone socket place external equipment by earphone socket state detection circuit as shown in Figure 4.3.5 no matter very little earphone socket inserts 4 segmentation earphones still is 3 segmentation earphones 8 or passive loudspeaker box 10, CPU can receive different signals.If insert passive loudspeaker box 10, then open external passive audio amplifier 10 power amplifiers; If insert 4 segmentation earphones and 3 segmentation earphones 8, then be operated in the earphone state, earphone cord has the FM antenna function.
Earphone socket interface circuit 7 as shown in Figure 2,1 pin of earphone socket and 5 pin short circuits, 1 pin connect the Speaker-end of external passive audio amplifier power amplifier 11,1 pin connects earphone left and right acoustic channels circuit behind inductance B101 MP3_HL holds, 1 pin is through diode V101 ground connection; 2 pin and 6 pin short circuits, 2 pin connect the Speaker+ end of external passive audio amplifier power amplifier 11, and 2 pin are through resistance R 114 ground connection, and 2 pin are through diode V102 ground connection, and 2 pin connect the MP3_HR end of earphone left and right acoustic channels circuit behind inductance B100; 3 pin and 4 pin disconnect, and 3 pin are through diode V100 ground connection, and 3 pin connect the MIC_H end of earphone socket state detection circuit through inductance B102; 4 pin are through resistance R 113, inductance B103 ground connection; 6 pin meet power vd D through resistance R 110, and 6 pin connect CPU processor 4 through resistance R 103.
The judgement of external equipment type:
When earphone does not insert earphone socket: 2 pin of earphone socket and 6 pin short circuits, 1 pin and 5 pin short circuits, 3 pin and 4 pin disconnect;
When earphone inserted earphone socket: 2 pin and 6 pin disconnected, and 1 pin and 5 pin disconnect, and 3 pin and 4 pin depend on that the equipment of insertion is 3 segmentations or 4 segmentations, if 3 segmentations, then 3 pin and 4 pin short circuits, if 4 segmentations, then connecting the MIC(impedance between 3 pin and 4 pin is about 2K).
CPU processor 4 interrupt signals and process analysis:
When earphone did not insert, VDD was through R110 and R114 dividing potential drop, and earphone socket 6 pin are electronegative potential (0V); After earphone inserted, 2 pin and 6 pin disconnected, and 6 pin are high potential (2.8V), and at this moment, EINT0_HEADSET obtains a rising edge triggering signal, were earphone and inserted interrupt signal (behind the mobile phone power-on, VDD remains the 2.8V current potential).
When inserting passive loudspeaker box 10,3 segmentation earphones 8, earphone socket 3 pin and 4 pin short circuits, 4 pin are by R113 ground connection, and the ADC2_ACC that CPU collects is low; When insertion band MIC earphone was 4 segmentation earphones, because the impedance of MIC own, ADC2_ACC collected a numerical value (MICBIAS=1.9V).
During insertion, the differentiation of three kinds of states: acquiescence passive loudspeaker box 10 audio frequency power amplifiers are for closing, and headset mode is opened.Software is opened MICBIAS, and the value of sampling ADC 2_ACC is if ADC2_ACC is a numerical value voltage, be 4 segmentation earphones, if ADC2_ACC is 0V, then be passive loudspeaker box 10 or 3 segmentation earphones 8, CPU handled by GPIO73, GPIO75 control and opened PA this moment, read the value of ADC2_ACC again, if the ADC2_ACC that reads is 0, then confirm as passive loudspeaker box 10, if ADC2_ACC is a numerical value (between 0 to 1.9V), then be judged as 3 segmentation earphones 8, again PA closed.
During work, functional status is distinguished: 4 segmentation earphones, 3 segmentation earphones 8 are according to normal earphone state processing, if passive loudspeaker box 10, in the work, external passive audio amplifier 10 power amplifiers are opened, and ADC2_ACC is in sample states always; In the no work, external passive audio amplifier 10 power amplifiers are closed, and EINT0_HEADSET is a high level, and when extracting, EINT0_HEADSET becomes low level, and earphone state processing and normal 4 segmentation earphones are done normally and extracted Interrupt Process.
When extracting, operating state is distinguished: when extracting, if 4 segmentation earphones and 3 segmentation earphones 8, external passive audio amplifier 10 power amplifiers are closed conditions; Because when function accessories inserted, EINT0_HEADSET was a high level, when function accessories are extracted, earphone socket 2 pin and 6 pin short circuits, EINT0_HEADSET becomes low level, is identified as earphone and extracts; When extracting, if passive loudspeaker box 10, and external passive audio amplifier 10 power amplifiers are open modes, and ADC2_ACC is in query State always, and this state ADC2_ACC is a low level; In case extract, earphone socket 3 pin and 4 pin disconnect, and ADC2_ACC is a numerical value, is judged as passive loudspeaker box 10 and extracts.
Claims (7)
1. mobile phone passive loudspeaker box interface, comprise CPU processor, earphone socket, it is characterized in that to insert in the described earphone socket 3 segmentation earphones, 4 segmentation headsets, passive loudspeaker box, described CPU processor connects built-in loudspeaker power amplifier, earphone socket interface circuit, external passive audio amplifier power amplifier respectively, built-in loudspeaker power amplifier is connected with built-in loudspeaker, and external passive audio amplifier power amplifier links to each other with passive loudspeaker box by earphone socket.
2. a kind of mobile phone passive loudspeaker box interface according to claim 1 is characterized in that described CPU processor connects microphone MIC, receiver, FM or TV source of sound respectively by the corresponding interface.
3. a kind of mobile phone passive loudspeaker box interface according to claim 1, it is characterized in that in the described earphone socket interface circuit, 1 pin of earphone socket and 5 pin short circuits, 1 pin connects the Speaker-end of external passive audio amplifier power amplifier, 1 pin connects the MP3_HL end of earphone left and right acoustic channels circuit behind inductance B101,1 pin is through diode V101 ground connection; 2 pin and 6 pin short circuits, 2 pin connect the Speaker+ end of external passive audio amplifier power amplifier, and 2 pin are through resistance R 114 ground connection, and 2 pin are through diode V102 ground connection, and 2 pin connect the MP3_HR end of earphone left and right acoustic channels circuit behind inductance B100; 3 pin and 4 pin disconnect, and 3 pin are through diode V100 ground connection, and 3 pin connect the MIC_H end of earphone socket state detection circuit through inductance B102; 4 pin are through resistance R 113, inductance B103 ground connection; 6 pin meet power vd D through resistance R 110, and 6 pin connect the CPU processor through resistance R 103.
4. a kind of mobile phone passive loudspeaker box interface according to claim 1, it is characterized in that the sound source signal after described CPU processor will be handled delivers to external passive audio amplifier power amplifier, the signal after external passive audio amplifier power amplifier will be handled is delivered to the passive loudspeaker box that links to each other with earphone socket.
5. a kind of mobile phone passive loudspeaker box interface according to claim 1 is characterized in that the sound source signal after described CPU processor will be handled is delivered to built-in loudspeaker power amplifier, and the signal after built-in loudspeaker power amplifier will be handled send built-in loudspeaker.
6. a kind of mobile phone passive loudspeaker box interface according to claim 3 is characterized in that the sound source signal after described CPU processor will be handled is delivered to earphone left and right acoustic channels circuit, earphone left and right acoustic channels circuit to signal processing after ear sending machine transplanting of rice seated connection mouth circuit output.
7. a kind of mobile phone passive loudspeaker box interface according to claim 3 is characterized in that described CPU processor detects the type of earphone socket place external equipment by the earphone socket state detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206811549U CN201898602U (en) | 2010-12-27 | 2010-12-27 | Passive sound box interface of mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206811549U CN201898602U (en) | 2010-12-27 | 2010-12-27 | Passive sound box interface of mobile phone |
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| CN201898602U true CN201898602U (en) | 2011-07-13 |
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| CN2010206811549U Expired - Fee Related CN201898602U (en) | 2010-12-27 | 2010-12-27 | Passive sound box interface of mobile phone |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391495A (en) * | 2013-07-01 | 2013-11-13 | 上海摩软通讯技术有限公司 | Automatic earphone adaptation circuit and adaptation method thereof |
| CN103852615A (en) * | 2012-11-30 | 2014-06-11 | 国基电子（上海）有限公司 | Portable mobile terminal and method for measuring current of external-connection device |
| CN104023285A (en) * | 2013-02-28 | 2014-09-03 | 宏碁股份有限公司 | Electronic device and control method |
| CN105142072A (en) * | 2015-09-30 | 2015-12-09 | 惠州Tcl移动通信有限公司 | Audio apparatus with externally connected player and audio playing method thereof |
| CN106817495A (en) * | 2017-02-21 | 2017-06-09 | 广东欧珀移动通信有限公司 | Mobile terminal message processing method, device and mobile terminal |
-
2010
- 2010-12-27 CN CN2010206811549U patent/CN201898602U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852615A (en) * | 2012-11-30 | 2014-06-11 | 国基电子（上海）有限公司 | Portable mobile terminal and method for measuring current of external-connection device |
| CN103852615B (en) * | 2012-11-30 | 2018-02-13 | 国基电子（上海）有限公司 | The method of the electric current of portable mobile termianl and measurement external device |
| CN104023285A (en) * | 2013-02-28 | 2014-09-03 | 宏碁股份有限公司 | Electronic device and control method |
| CN103391495A (en) * | 2013-07-01 | 2013-11-13 | 上海摩软通讯技术有限公司 | Automatic earphone adaptation circuit and adaptation method thereof |
| CN105142072A (en) * | 2015-09-30 | 2015-12-09 | 惠州Tcl移动通信有限公司 | Audio apparatus with externally connected player and audio playing method thereof |
| CN105142072B (en) * | 2015-09-30 | 2018-12-07 | 惠州Tcl移动通信有限公司 | A kind of audio devices and audio frequency playing method of external player |
| CN106817495A (en) * | 2017-02-21 | 2017-06-09 | 广东欧珀移动通信有限公司 | Mobile terminal message processing method, device and mobile terminal |
| CN106817495B (en) * | 2017-02-21 | 2019-07-23 | Oppo广东移动通信有限公司 | Mobile terminal message processing method, device and mobile terminal |
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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 |
Granted publication date: 20110713 Termination date: 20181227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |