CN106658280A - Output switching circuit and earphones applying the circuit - Google Patents
Output switching circuit and earphones applying the circuit Download PDFInfo
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- CN106658280A CN106658280A CN201510709613.7A CN201510709613A CN106658280A CN 106658280 A CN106658280 A CN 106658280A CN 201510709613 A CN201510709613 A CN 201510709613A CN 106658280 A CN106658280 A CN 106658280A
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Abstract
Disclosed is an output switching circuit, for performing audio output switching on an electronic device. The output switching circuit comprises an induction module and a control module, wherein the induction module is used for sensing a state of the output switching circuit, if the output switching circuit is at different states, the induction module outputs corresponding state signals, the control module is connected with the induction module, the control module, according to the received state signals, outputs corresponding control signals to the electronic device, and the electronic device receives the control signals to switch different audio output modes. The invention further discloses earphones applying the output switching circuit. According to the invention, audio output of the electronic device can be switched so that a user can be prompted.
Description
Technical field
The present invention relates to a kind of output switching circuit, further relates to a kind of earphone of the application output switching circuit.
Background technology
With the development of smart mobile phone, the usage frequency more and more higher of earphone.When earphone plugs mobile phone jack, the prompt tone of mobile phone will not pass through loudspeaker broadcasting, if therefore user forget to disconnect earphone with mobile phone, and user, when not wearing earphone, user will be unable to hear the prompt tone of mobile phone.
The content of the invention
In consideration of it, being necessary to provide a kind of output switching circuit that can be switched over equipment audio output state and the earphone using the circuit.
A kind of output switching circuit, for carrying out audio output switching to an electronic equipment, the output switching circuit includes：
One induction module, the induction module is used to sense the state of the output switching circuit, if the output switching circuit is in first state, the induction module exports first state signal, if the output switching circuit is in the second state, the induction module exports the second status signal；
One control module, the control module is connected with the induction module, when the control module receives the first state signal, the control module exports the first control signal to the electronic equipment, the electronic equipment is the first audio output mode when receiving first control signal, when the control module receives second status signal, the control module exports the second control signal to the electronic equipment, and the electronic equipment is the second audio output mode when receiving second control signal.
The present invention also provides a kind of earphone using the output switching circuit, and the earphone is used to connect an electronic equipment, and the earphone includes：
One induction module, the induction module is used to sense the state of the earphone, if the earphone is in wearing state, the induction module exports first state signal, if the earphone is in non-wearing state, the induction module exports the second status signal；
One control module, the control module is connected with the induction module, when the control module receives the first state signal, the control module exports the first control signal to the electronic equipment, the electronic equipment is by audio output to earphone, when the control module receives second status signal, the control module exports the second control signal to the electronic equipment, and the electronic equipment is by the loudspeaker of audio output to the electronic equipment.
The output switching circuit can control the electronic equipment under different conditions and select different audio output modes, to avoid omitting information.
Description of the drawings
Fig. 1 is the block diagram of the better embodiment of output switching circuit of the present invention.
Fig. 2 is the block diagram of the better embodiment of earphone of the present invention.
Fig. 3 is the circuit diagram of the better embodiment of output switching circuit of the present invention.
Main element symbol description
| Output switching circuit | 100 |
| Electronic equipment | 200 |
| Earphone | 300 |
| Induction module | 10 |
| Control module | 11 |
| Audio processing modules | 12 |
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
Fig. 1 is refer to, the better embodiment of output switching circuit of the present invention includes induction module 10 and control module 11.The induction module 10 is used to sense the state of the output switching circuit 100, if the output switching circuit 100 is in first state, then the induction module exports first state signal, if the output switching circuit 100 is in the second state, the induction module exports the second status signal.Output switching circuit 100 described in present embodiment is connected with an electronic equipment 200.
The control module 11 is connected with the induction module 10, when the control module 11 receives the first state signal, the control module 11 exports the first control signal to the electronic equipment 200, the electronic equipment 200 is the first audio output mode when receiving first control signal, when the control module 11 receives second status signal, the control module 11 exports the second control signal to the electronic equipment 200, and the electronic equipment 200 is the second audio output mode when receiving second control signal.
Fig. 2 is refer to, the present invention also provides a kind of earphone 300 using the output switching circuit 100, and the earphone 300 is used to connect the electronic equipment 200, and the earphone 300 includes the induction module 10, the control module 11 and audio processing modules 12.
The induction module 10 is used to sense the state of the earphone 300, if the earphone 300 is in wearing state, the output first state signal of the induction module 10, if the earphone 300 is in non-wearing state, the second status signal of output of the induction module 10.
The control module 11 is connected with the induction module 10, when the control module 11 receives the first state signal, the control module 11 exports the first control signal to the electronic equipment 200, the electronic equipment 200 exports audio signal to the audio processing modules 12 of the earphone 300, when the control module 11 receives second status signal, the control module 11 exports the second control signal to the electronic equipment 200, and the electronic equipment 200 is by the loudspeaker of audio output to the electronic equipment 200.
Fig. 3 is refer to, the better embodiment of output switching circuit of the present invention 100 includes infrared inductor U1, comparator U2, FET Q1, FET Q2, resistance R1-R10, electric capacity C1, switch SW1, voltage input end V1 and voltage input end V2.
The induction module 10 includes infrared inductor U1, comparator U2, FET Q1, resistance R1-R7 and electric capacity C1.
First pin 1 of the infrared inductor U1 is grounded by electric capacity C1, and first pin 1 of the infrared inductor U1 is also connected to the voltage input end V2 by resistance R1.The second pin 2 of the infrared inductor U1 is connected to the normal phase input end 3 of the comparator U2 by resistance R2, and the second pin 2 of the infrared inductor U1 is also grounded by resistance R3.3rd pin 3 of the infrared inductor U1 is grounded.
The inverting input 2 of the comparator U2 is grounded by resistance R4, and the inverting input 2 of the comparator U2 is also connected to the output end 1 of the comparator U2 by resistance R5.The voltage end 4 of the comparator U2 is connected to the voltage input end V2.The earth terminal 5 of the comparator U2 is grounded.
The grid of the FET Q1 is connected to the output end 1 of the comparator U2.The source electrode of the FET Q1 is grounded by resistance R7, and the drain electrode of the FET Q1 is connected to the voltage input end V1 by resistance R6.The source electrode of the FET Q1 is also attached to the grid of the FET Q2.
The control module 11 includes FET Q2, switch SW1 and resistance R8-R10.
The grid of the FET Q2 is grounded by the resistance R7, and the source electrode of the FET Q2 is grounded by resistance R8, and the drain electrode of the FET Q2 is grounded by resistance R9, and the drain electrode of the FET Q2 is also attached to the sliding end of the switch SW1.
The electronic equipment 200 includes audio decoder coding chip U4, audio signal interface chip U3, loudspeaker SPK, resistance R11-R17 and electric capacity C2-C5.
First output pin 1 of the audio decoder coding chip U4, the second output pin, the 3rd output pin 3 and the 4th output pin 4 are all connected to the loudspeaker SPK.The voltage ratio of the audio decoder coding chip U4 is connected to the L channel input pin 7 of the audio decoder coding chip U4 compared with pin 5 by resistance R11, and the voltage ratio of the audio decoder coding chip U4 is also connected to the R channel input pin 6 of the audio decoder coding chip U4 compared with pin 5 by resistance R12.The R channel input pin 6 of the audio decoder coding chip U4 is connected to the output pin 4 of audio signal interface chip U3, and the R channel input pin 6 of the audio decoder coding chip U4 is also grounded by electric capacity C2.The L channel input pin 7 of the audio decoder coding chip U4 is connected to the output pin 3 of audio signal interface chip U3, and the L channel input pin 7 of the audio decoder coding chip U4 is also grounded by electric capacity C3.The L channel output pin 8 of the audio decoder coding chip U4 is connected to the input pin 1 of audio signal interface chip U3, and the L channel output pin 8 of the audio decoder coding chip U4 is also grounded by electric capacity C5.The R channel output pin 9 of the audio decoder coding chip U4 is connected to the input pin 2 of audio signal interface chip U3, and the R channel output pin 9 of the audio decoder coding chip U4 is also grounded by electric capacity C4.The earphone output pin 10 of the audio decoder coding chip U4 is connected to the drain electrode of the FET Q2 by resistance R15.The earphone output pin 10 of the audio decoder coding chip U4 also passes sequentially through the sense pins 5 that resistance R15, resistance R16 are connected to audio signal interface chip U3.The earphone output pin 10 of the audio decoder coding chip U4 also passes sequentially through the earphone pin 6 that resistance R15, resistance R17 are connected to audio signal interface chip U3.The maintenance pin 7 of audio signal interface chip U3, maintenance pin 8 are grounded.
In present embodiment, audio decoder coding chip U4, audio signal interface chip U3, the loudspeaker SPK of the electronic equipment 200 selects existing technical scheme, in other embodiments, audio decoder coding chip U4, audio signal interface chip U3, loudspeaker SPK also can select other existing technical schemes, only need to keep the drain electrode of the FET Q2 to be connected to the sense pins of audio signal interface chip U3, audio signal interface chip U3 judges whether the electronic equipment 200 is connected to earphone according to the signal that sense pins are received.
The switch SW1 is a slide switch, for switching the pattern of the earphone 300.When the switch SW1 slides causes the sliding end for switching SW1 to be connected to the hanging pin 2 of the switch SW1, the earphone 300 is normal mode of operation, the sense pins 5 of audio signal interface chip U3 are grounded by resistance R9, and the induction module 10 will not affect that the audio output of the electronic equipment 200.
When the switch SW1 slides causes the sliding end for switching SW1 to be connected to the power pins 3 of the switch SW1, the earphone 300 is intelligent mode, the voltage input end V1 passes sequentially through resistance R10 and resistance R9 ground connection, the sense pins 5 of audio signal interface chip U3 are grounded by resistance R9, and now the induction module 10 can be used to switch the audio output of the electronic equipment 200.When user wears earphone 300 and earphone 300 is connected to the electronic equipment 200, the infrared inductor U1 senses that the earphone 300 is worn, and the infrared inductor U1 exports the normal phase input end 3 of high level signal to the comparator U2 by second pin 2.The comparator U2 exports a high level signal by output end 1.The grid of the FET Q1 is high level, the drain electrode of the FET Q1 and source conduction, the grid of the FET Q2 is high level, the drain electrode of the FET Q2 and source conduction, the sense pins 5 of audio signal interface chip U3 are low level by resistance R8 ground connection, and the electronic equipment 200 exports audio signal to the audio processing modules 12.When user does not wear earphone 300 and earphone 300 is connected to the electronic equipment 200, infrared inductor U1 senses that the earphone 300 is not worn, and the infrared inductor U1 exports the normal phase input end 3 of low level signal to the comparator U2 by second pin.The comparator U2 exports low level signal.The FET Q1 cut-offs.The FET Q2 cut-offs, the sense pins 5 of audio signal interface chip U3 are high level by resistance R9 ground connection, and the electronic equipment 200 exports audio signal to the loudspeaker SPK.
In other embodiments, the infrared inductor U1 can replace for other inductors, such as temperature inductor.The switch SW1 can be button switch or other switches.
In present embodiment, the FET Q1 and FET Q2 are N-channel FET, can be substituted using other electronic switches in other embodiments.
By above-mentioned design, the earphone 300 can be selected by electronic equipment loudspeaker playing alert tones when earphone is connected electronic equipment and do not wear earphone by user, to avoid user from omitting information.
Finally it should be noted that, above example is only to illustrate technical scheme and unrestricted, although being described in detail to the present invention with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a kind of output switching circuit, for carrying out audio output switching to an electronic equipment, the output switching circuit includes：
One induction module, the induction module is used to sense the state of the output switching circuit, if the output switching circuit is in first state, the induction module exports first state signal, if the output switching circuit is in the second state, the induction module exports the second status signal；
One control module, the control module is connected with the induction module, when the control module receives the first state signal, the control module exports the first control signal to the electronic equipment, the electronic equipment is the first audio output mode when receiving first control signal, when the control module receives second status signal, the control module exports the second control signal to the electronic equipment, and the electronic equipment is the second audio output mode when receiving second control signal.
2. output switching circuit as claimed in claim 1, it is characterised in that：The control module includes the first FET, the drain electrode of first FET is grounded by first resistor, the drain electrode of first FET is also attached to the electronic equipment, and the drain electrode of first FET is used to export first control signal and the second control signal to the electronic equipment.
3. output switching circuit as claimed in claim 2, it is characterised in that：The grid of first FET connects the induction module to receive the status signal of the induction module output.
4. output switching circuit as claimed in claim 2, it is characterised in that：The control module is also including a switch, first pin of the switch is connected to first voltage input by second resistance, the second pin of the switch is hanging, and the switch also includes a sliding end, and the sliding end is connected to the drain electrode of first FET.
5. output switching circuit as claimed in claim 4, it is characterised in that：The switch is a slide switch.
6. a kind of earphone, for connecting an electronic equipment, the earphone includes：
One induction module, the induction module is used to sense the state of the earphone, if the earphone is in wearing state, the induction module exports first state signal, if the earphone is in non-wearing state, the induction module exports the second status signal；
One control module, the control module is connected with the induction module, when the control module receives the first state signal, the control module exports the first control signal to the electronic equipment, the electronic equipment is by audio output to earphone, when the control module receives second status signal, the control module exports the second control signal to the electronic equipment, and the electronic equipment is by the loudspeaker of audio output to the electronic equipment.
7. earphone as claimed in claim 6, it is characterised in that：The control module includes the first FET, the drain electrode of first FET is grounded by first resistor, the drain electrode of first FET is also attached to the electronic equipment, and the drain electrode of first FET is used to export first control signal and the second control signal to the electronic equipment.
8. output switching circuit as claimed in claim 7, it is characterised in that：The grid of first FET connects the induction module to receive the status signal of the induction module output.
9. output switching circuit as claimed in claim 7, it is characterised in that：The control module is also including a switch, first pin of the switch is connected to first voltage input by second resistance, the second pin of the switch is hanging, and the switch also includes a sliding end, and the sliding end is connected to the drain electrode of first FET.
10. output switching circuit as claimed in claim 9, it is characterised in that：The switch is a slide switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510709613.7A CN106658280A (en) | 2015-10-28 | 2015-10-28 | Output switching circuit and earphones applying the circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510709613.7A CN106658280A (en) | 2015-10-28 | 2015-10-28 | Output switching circuit and earphones applying the circuit |
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| Publication Number | Publication Date |
|---|---|
| CN106658280A true CN106658280A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510709613.7A Pending CN106658280A (en) | 2015-10-28 | 2015-10-28 | Output switching circuit and earphones applying the circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110198572A (en) * | 2018-02-26 | 2019-09-03 | 塞舌尔商元鼎音讯股份有限公司 | Sound play device and its method for executing connection |
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| CN103167370A (en) * | 2013-04-09 | 2013-06-19 | 北京兴科迪科技有限公司 | Headsets capable of switching headset mode and loudspeaking mode intelligently and vehicle with headsets |
| CN103257873A (en) * | 2013-04-18 | 2013-08-21 | 北京小米科技有限责任公司 | Method and system for controlling intelligent terminal device |
| CN104616676A (en) * | 2014-12-15 | 2015-05-13 | 惠州Tcl移动通信有限公司 | Multimedia file playing method and system based on headset using state |
| US20150312669A1 (en) * | 2011-06-29 | 2015-10-29 | Lg Electronics Inc. | Terminal and control method thereof |
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2015
- 2015-10-28 CN CN201510709613.7A patent/CN106658280A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150312669A1 (en) * | 2011-06-29 | 2015-10-29 | Lg Electronics Inc. | Terminal and control method thereof |
| CN103167370A (en) * | 2013-04-09 | 2013-06-19 | 北京兴科迪科技有限公司 | Headsets capable of switching headset mode and loudspeaking mode intelligently and vehicle with headsets |
| CN103257873A (en) * | 2013-04-18 | 2013-08-21 | 北京小米科技有限责任公司 | Method and system for controlling intelligent terminal device |
| CN104616676A (en) * | 2014-12-15 | 2015-05-13 | 惠州Tcl移动通信有限公司 | Multimedia file playing method and system based on headset using state |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110198572A (en) * | 2018-02-26 | 2019-09-03 | 塞舌尔商元鼎音讯股份有限公司 | Sound play device and its method for executing connection |
| CN110198572B (en) * | 2018-02-26 | 2022-11-04 | 达发科技股份有限公司 | Sound playing device and method for executing connection thereof |
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Application publication date: 20170510 |