CN104581474A - Handheld electronic device and corresponding ant-noise earphone - Google Patents
Handheld electronic device and corresponding ant-noise earphone Download PDFInfo
- Publication number
- CN104581474A CN104581474A CN201310514988.9A CN201310514988A CN104581474A CN 104581474 A CN104581474 A CN 104581474A CN 201310514988 A CN201310514988 A CN 201310514988A CN 104581474 A CN104581474 A CN 104581474A
- Authority
- CN
- China
- Prior art keywords
- circuit
- pin
- noise
- earphone
- switching circuit
- 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.)
- Pending
Links
Landscapes
- Telephone Set Structure (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention discloses a handheld electronic device and a corresponding anti-noise earphone. The handheld electronic device can be connected with an anti-noise earphone, and comprises a connecting interface, a first switch circuit, a second switch circuit and a control circuit, wherein the connecting interface is provided with a first pin, a second pin and a third pin; the first switch circuit is electrically connected with the first pin; the second switch circuit is electrically connected with the second pin; the control circuit is electrically connected with the connecting interface, the first switch circuit and the second switch circuit. The handheld electronic device can adopt the configuration of the switch circuits to achieve a purpose that the operation voltage required by an anti-noise circuit is transmitted by an inherent earphone circuit transmission with a microphone, so that the corresponding earphone can realize an anti-noise function.
Description
Technical field
The invention belongs to electronic device field, especially relating to a kind ofly has about operating voltage can be provided to the portable electric device of the anti-noise circuit of anti-noise earphone, and does not need the anti-noise earphone adopting any battery.
Background technology
The technology of active noise control proposed on 1936 Christian eras, principle utilizes sound wave interference phenomenon, the anti-noise of manufacture (anti-noise) of appropriateness, makes the sound wave summation of sound field be attributed to zero and reach and reduce the object of noise with destruction interference interference noise.Be named the meaning that " initiatively " controls, be used to distinguish with traditional " passive " noise control.Passive noise control comprises the methods such as isolation, impedance bundary, sound-absorbing process or device muffler, comparatively effective for medium-high frequency, and as being used to process low frequency noise, effect is more not remarkable, such as earplug or soundproof window etc.Active noise control is a professional technique in conjunction with audio engineering, electronic circuit, digital signal processor and control theory, due to the assemblies such as the progress of correlation technique in recent years and digital signal processor optimization and cheaply make active noise control be implemented and quantize, the implementation of existing earphone quantizes product at present.For active noise control earphone, the earliest be applied in the helmet of fighter-pilot, be used for reducing aeroengine and vibrating noise, increase communication definition.Its principle for bury microphone underground to detect noise signal in earphone, and delivers to earphone horn by the anti-noise signal of back coupling control generation.
With regard to the earphone (i.e. anti-noise earphone) with active noise control, although the controller unit needed for active noise control has been integrated and has been contracted to portable degree by technology today, but active noise controller unit still needs certain power supply to drive, therefore the earphone that great majority have an active noise control function has external power supply or with powered battery, cause earphone to become comparatively heavy, and need charge separately and use there is the time limit.In view of this, how to adjust and power supply is exported meet original specification framework in a simpler way, the particularly how specification framework that exports of this power supply compared with the restriction of tool condition of the like mobile device of coordinating example and source of sound, is turned into the project that needs overcome.
Summary of the invention
The object of the present invention is to provide a kind of portable electric device, it includes connecting interface, the first switching circuit, second switch circuit and control circuit.Described connecting interface has the first pin, the second pin and the 3rd pin, and wherein the first pin is used for transmitting microphone signal, and the second pin is used for transmitting L channel signal.Described first switching circuit is electrically connected between the first pin and control circuit.Described second switch circuit is electrically connected between the second pin and control circuit.Described control circuit is electrically connected the 3rd pin.Judge whether that an earphone is electrically connected to above-mentioned connecting interface as described control circuit according to the change in voltage on the 3rd pin, and when being judged as anti-noise earphone, portable electric device opens the anti-noise function of this anti-noise earphone, control circuit just provides operating voltage to be sent to the first pin by the first switching circuit, as the operating power of the anti-noise circuit in above-mentioned anti-noise earphone, and when meeting microphone using state, control circuit changes by providing operating voltage to reach the second pin through second switch circuit, and microphone function and anti-noise function can be implemented simultaneously.
The present invention separately provides a kind of anti-noise earphone corresponding to above-mentioned portable electric device.This anti-noise earphone includes connecting interface, the first switching circuit, second switch circuit, microphone, left speaker, right loud speaker and anti-noise circuit.Described connecting interface is used for being electrically connected portable electric device, and this connecting interface has the first pin, the second pin and the 3rd pin, and wherein the first pin is used for receiving microphone signal, and the second pin is used for receiving left speaker signal.Described first switching circuit is electrically connected between the first pin and anti-noise circuit, and the first switching circuit determines whether allow signal pass through according to the voltage swing passed through.Described second switch circuit is electrically connected between the second pin and anti-noise circuit, and second switch circuit according to pass through voltage swing and determine whether allow signal pass through.Described call microphone is electrically connected above-mentioned first pin.Described left speaker is electrically connected the second pin.Described right loud speaker system is electrically connected the 3rd pin.Described anti-noise circuit, it is electrically connected above-mentioned first switching circuit and second switch circuit, so that anti-noise circuit can receive operating voltage via the first switching circuit or second switch circuit.
Accompanying drawing explanation
Figure 1 shows that one embodiment of the present of invention disclose the functional block diagram of portable electric device and the functional block diagram of anti-noise earphone.
Figure 2 shows that the more detailed embodiment of portable electric device discloses the functional block diagram of handheld electronic device.
Figure 3 shows that another preferred embodiment of portable electric device discloses the functional block diagram of portable electric device.
Figure 4 shows that an embodiment of control circuit discloses the functional block diagram of control circuit.
Figure 5 shows that another more detailed embodiment of portable electric device discloses the functional block diagram of portable electric device.
Figure 6 shows that an embodiment of anti-noise earphone discloses the functional block diagram of anti-noise earphone.
Figure 7 shows that a specific embodiment of anti-noise earphone discloses the functional block diagram of anti-noise earphone.
Figure 8 shows that the steps flow chart schematic diagram of the power management way that this case develops out.
Figure 9 shows that the detailed step of power management way, be applicable between handheld electronic device and an earphone.
[symbol description]
100: portable electric device
110,201: connecting interface
111: the first pins
112: the second pins
113: the three pins
121,122,136,210,220,230: switching circuit
1211: the input of switching circuit 121
1212: the output of switching circuit 121
1213: the control end of switching circuit 121
1214: the first input end of switching circuit 121
1215: the second input of switching circuit 121
1221: the input of switching circuit 122
1222: the output of switching circuit 122
1223: the control end of switching circuit 122
1224: the first input end of switching circuit 122
1225: the second input of switching circuit 122
130: control circuit
131: baseband circuit
1311: the first output of baseband circuit
1312: the second output of baseband circuit
1313: the 3rd output of baseband circuit
1314: the 4th output of baseband circuit
1315: the 5th output of baseband circuit
132: operating voltage supply
133: audio unit
135: impedance unit
1351: the input of impedance unit
1352: the output of impedance unit
1361: the first input end of switching circuit 136
1362: the second input of switching circuit 136
1363: the output of switching circuit 136
1364: the control end of switching circuit 136
200,300: anti-noise earphone
211,212,213: pin
2101: the input of switching circuit 210
2102: the output of switching circuit 210
2103: the control end of switching circuit 210
221: the input of switching circuit 220
222: the output of switching circuit 220
223: the control end of switching circuit 220
231: the first input end of switching circuit 230
232: the second input of switching circuit 230
233: the output of switching circuit 230
234: the control end of switching circuit 230
240: microphone
250: anti-noise circuit
251: the first input end of anti-noise circuit
252: the second input of anti-noise circuit
253: the first input end of anti-noise circuit
254: the second input of anti-noise circuit
260: sensing circuit
261: the first input end of sensing circuit
262: the second input of sensing circuit
263: the first output of sensing circuit
264: the second output of sensing circuit
271: right loud speaker
272: left speaker
C1: the first controls signal
C2: the second controls signal
C3: earphone connects detection signal
C4: the four controls signal
C5: the five controls signal
C6: the six controls signal
C7: the seven controls signal.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
One embodiment of the present of invention, Figure 1 shows that and disclose the functional block diagram of portable electric device 100 and the functional block diagram of anti-noise earphone 200.Wherein, this portable electric device 100 includes connecting interface 110, switching circuit 121, switching circuit 122 and control circuit 130.Wherein switching circuit 121 has input 1211, output 1212 and control end 1213, switching circuit 122 also has input 1221, output 1222 and control end 1223, connecting interface 110 has the first pin 111, second pin 112 and the 3rd pin 113, wherein the first pin 111 can the operating voltage that transmits of receiving key circuit 121 output 1212 to the anti-noise circuit 250 of anti-noise earphone 200, second pin 112 can the operating voltage that transmits of receiving key circuit 122 output 1222 to the anti-noise circuit 250 of anti-noise earphone 200, 3rd pin 113 is connected with control circuit 130, and whether the change in voltage utilizing control circuit 130 to sense the 3rd pin 113 is inserted to detect earphone.Control circuit 130 provides switching circuit 121 input 1211 and switching circuit 122 input 1221 operating voltage, and provide switching circuit 121 control end 1213 and switching circuit 122 control end 1,223 first to control signal C1 (not being shown in Fig. 1), with control switch circuit 121 and switching circuit 122, start to transmit the anti-noise circuit 250 of operating voltage to anti-noise earphone 200 via switching circuit 121 after anti-noise earphone 200 inserts, and under another operating state such as microphone using state, start to transmit the anti-noise circuit 250 of operating voltage to anti-noise earphone 200 via switching circuit 122.
This anti-noise earphone 200 includes connecting interface 201, switching circuit 210, switching circuit 220, right loud speaker 271, left speaker 272, microphone 240 and anti-noise circuit 250, wherein connecting interface 201 comprises pin 211, pin 212 and pin 213, connect the first pin 111, second pin 112 and the 3rd pin 113 respectively, right loud speaker 271 connecting leads 213, left speaker 272 connecting leads 212, microphone 240 connecting leads 211, anti-noise circuit 250 connecting leads 211 and pin 212 receive operating voltage.Main purpose utilizes control switch circuit to transmit via different paths the operating voltage needed for the anti-noise circuit of anti-noise earphone in this embodiment, and switching circuit 121 and switching circuit 122 other can have the switching circuit of identical function or assembly replaces, be not limited to the design of two switching circuits.
Fig. 2 is the functional block diagram that the more detailed embodiment of portable electric device 100 discloses handheld electronic device 100.Wherein switching circuit 121 has first input end 1214, second input 1215, control end 1213 and output 1212, switching circuit 122 has first input end 1224, second input 1225, control end 1223 and output 1222, control circuit 130 provides L channel signal respectively, operating voltage, first controls signal C1 to the first input end 1224 of switching circuit 122, second input 1225, control end 1223, and provide operating voltage respectively, microphone works voltage, first controls signal C1 to the first input end 1214 of switching circuit 121, second input 1215, control end 1213.After being connected with anti-noise earphone 200, control circuit 130 control switch circuit 121 output 1212 transmits operating voltage to the first pin 111, switching circuit 122 output 1222 transmits L channel signal to the second pin 112.And when meeting microphone works state, control circuit 130 control switch circuit 121 output 1212 transmits microphone works voltage to the first pin 111, switching circuit 122 output 1223 transmits operating voltage to the second pin 112.Mainly illustrate that control circuit can utilize same control signal to control two switching circuits in this embodiment, the signal of different demand is transmitted respectively in order to this two switching circuit, and can not repeat to transmit identical signal, therefore two switching circuits are also regarded as same switching circuit and are controlled output signal by single control signal.
Fig. 3 is the functional block diagram that another preferred embodiment of portable electric device 100 discloses portable electric device, the Main Differences of portable electric device 100 shown in itself and Fig. 2 is: control circuit 130 provides L channel signal, operating voltage, first to control signal C1 to first input end 1224, second input 1225, the control end 1223 of switching circuit 122 respectively, and provides operating voltage, microphone works voltage, the 5th to control signal C5 to first input end 1214, second input 1215, the control end 1213 of switching circuit 121 respectively.After being connected with anti-noise earphone 200, control circuit 130 control switch circuit 121 output 1212 transmits operating voltage to the first pin 111, and control switch circuit 122 output 1222 transmits L channel signal to the second pin 112.And when meeting microphone works state, control circuit 130 control switch circuit 121 output 1212 transmits microphone works voltage to the first pin 111, and control switch circuit 122 output 1222 first stops transmitting L channel signal and transmitting operating voltage to the second pin 112 again through a time of delay.Can power-off time in this embodiment mainly for avoiding switching to operating voltage, produce " bang bang (POP) " sound, through delay one time of delay, the object of elimination " bang bang (POP) " sound can be reached.
Fig. 4 is the functional block diagram of an embodiment announcement control circuit 130 of control circuit 130.Control circuit 130 comprises impedance unit 135 and switching circuit 136, wherein switching circuit 136 has first input end 1361, second input 1362, control end 1364 and output 1363, when detecting is connected with earphone, control circuit 130 transmits detection signal is sent to switching circuit 136 the second input 1362 via impedance unit 135, and provide the second control signal C2 (not being shown in Fig. 4) to transmit the detection signal of the second input 1362 reception to switching circuit 121 and switching circuit 122 to switching circuit 136 control end 1364 control switch circuit 136 output 1363, and utilize detection signal at the voltage ratio of impedance unit 135 and earphone to judge the kind of earphone, such as: general earphone, there is microphone earphone and anti-noise earphone etc.And control circuit 130 transmits operating voltage to switching circuit 136 first input end 1361 after being judged to be anti-noise earphone 200, and the second control signal C2 (not being shown in Fig. 4) is provided to transmit the operating voltage of first input end 1361 reception to switching circuit 121 and switching circuit 122 to switching circuit 136 control end 1364 control switch circuit 136 output 1363.Mainly illustrate that the voltage ratio that utilizes the known signal of sensing one to flow through to obtain between known tip assemblies and unknown assembly is to learn that the possible load of unknown assembly is to provide the foundation of judgement in this embodiment, therefore known tip assemblies is not limited to be reached by impedance unit and is not confined to be arranged in control circuit yet.
Fig. 5 is the functional block diagram of another more detailed embodiment announcement handheld electronic device 100 of portable electric device 100.Control circuit 130 comprises baseband circuit 131, operating voltage supply circuit 132, audio unit 133, impedance unit 135, with switching circuit 136.Impedance unit 135 has input 1351 and output 1352, wherein the detection signal that provides of input 1351 input service voltage supply circuit 132, and output 1352 exports detection signal.Switching circuit 136 has first input end 1361, second input 1362, control end 1364 and output 1363, the wherein operating voltage that provides of first input end 1361 input service voltage supply circuit 132, the detection signal that second input 1362 input impedance unit 135 provides, what control end 1364 inputted that baseband circuit 131 provides second controls signal C2 and output 1363 and exports to transmit and determine to transmit operating voltage or detection signal via control end 1364, and baseband circuit 131 has the first output 1311, second output 1312, 3rd output 1313, 4th output 1314 and the 5th output 1315, wherein the first output 1311 exports the 5th and controls the control end 1213 of signal C5 to switching circuit 121, 5th output 1315 exports the control end 1223 of the first control signal C1 to switching circuit 122, second output 1312 exports the control end 1364 of the second control signal C2 to switching circuit 136, 3rd output 1313 exports earphone and connects detection signal C3 to the 3rd pin 113, 4th output 1314 output control signal C4 is to operating voltage supply circuit 132.Baseband circuit 131 has judged whether earphone connection interface 110 according to the earphone connection detection signal C3 on the 3rd pin 113 in this instance, when confirming there is connection, baseband circuit 131 transmits the 5th and controls signal C5 and control signal C1 to switching circuit 121 and first and carry out control switch circuit 121 to switching circuit 122 and transmit detection signal to the first pin 111 transmitted via switching circuit 136, transmission second control signal C2 carrys out control switch circuit 136 to switching circuit 136 and transmits the detection signal transmitted via impedance unit 135, transmit the 4th control signal C4 to start to transmit detection signal to impedance unit 135 to operating voltage supply circuit 132 to control operating voltage supply circuit 132, and detect the voltage ratio of impedance unit 135 and earphone, judge the kind of earphone.Wherein when earphone is judged as anti-noise earphone, audio unit 133 transmits R channel signal to the 3rd pin 113, baseband circuit 131 transmits the first control signal C1 to be carried out control switch circuit 122 to switching circuit 122 and transmits L channel signal to the second pin 112 that audio unit 133 provides, transmit second to control signal C2 and transmit operating voltage that operating voltage supply circuit 132 transmits to switching circuit 121 to switching circuit 136 with control switch circuit 136, transmit the 4th control signal C4 to start to transmit operating voltage to operating voltage supply circuit 132 to control operating voltage supply circuit 132, transmit the 5th to control signal C5 and transmit with control switch circuit 121 operating voltage to the first pin 111 that operating voltage supply circuit 132 provides to switching circuit 121.And when meeting an operating state, audio unit 133 transmits R channel signal to the 3rd pin 113, baseband circuit 131 transmit the 5th control signal C5 to switching circuit 121 with transmit first and control signal C1 and transmit with control switch circuit 121 microphone works voltage to the first pin 111 that operating voltage supply circuit 132 provides to switching circuit 122, and control switch circuit 122 transmits operating voltage to the second pin 112 that switching circuit 136 provides, transmit second to control signal C2 and transmit operating voltage that operating voltage supply circuit 132 transmits to switching circuit 122 to switching circuit 136 with control switch circuit 136, transmit the 4th control signal C4 to start to transmit operating voltage to operating voltage supply circuit 132 to control operating voltage supply circuit 132.The object of this embodiment is present the inner calcspar of control circuit 130 and the interactive relationship between switching circuit 121, switching circuit 122 and connecting interface 110 in more detail.
Fig. 6 is the functional block diagram of an embodiment announcement anti-noise earphone 200 of anti-noise earphone 200.Anti-noise earphone 200 comprises connecting interface 201, switching circuit 210, switching circuit 220, microphone 240, anti-noise circuit 250, right loud speaker 271 and left speaker 272.Wherein connecting interface 201 comprises pin 211, pin 212 and pin 213, connect the first pin 111 respectively, second pin 112 and the 3rd pin 113, switching circuit 210 is connected between pin 211 and anti-noise circuit 250, switching circuit 220 is connected between pin 212 and anti-noise circuit, when switching circuit 210 reception is that the operating voltage that pin 211 transmits then is sent to anti-noise circuit 250, if not, then be not sent to anti-noise circuit 250, and switching circuit 220 is as the same, if what receive is the operating voltage that pin 212 transmits, be sent to anti-noise circuit 250, if not, then be not sent to anti-noise circuit 250.Mainly show that the anti-noise circuit of anti-noise earphone by neither receiving operating voltage with path, can be not limited to the circuit transmitting microphone or audio frequency, even can be the circuit that other newly add in this embodiment.
Fig. 7 is the functional block diagram of a specific embodiment announcement anti-noise earphone 300 of anti-noise earphone 300.Anti-noise earphone 300 has connecting interface 201, switching circuit 210, switching circuit 220, switching circuit 230, microphone 240, anti-noise circuit 250, sensing circuit 260, right loud speaker 271 and left speaker 272.Switching circuit 210 has input 2101, output 2102 and control end 2103, input 2101 connecting leads 211, output 2102 connects anti-noise circuit 250, control end 2103 connects sensing circuit 260, switching circuit 220 has input 221, output 222 and control end 223, input 221 connecting leads 212, output 222 connects anti-noise circuit 250, control end 223 connects sensing circuit 260, switching circuit 230 has first input end 231, second input 232, output 233 and control end 234, first input end 231 connecting leads 212, second input 232 connecting leads 213, output 233 connects left speaker 272, control end 234 connects the second output 264 of sensing circuit 260.Anti-noise circuit 250 has first input end 251, second input 252, first output 253 and the second output 254, the operating voltage that first input end 251 input switching circuit 210 provides is entered operating state to facilitate anti-noise circuit 250, the operating voltage that second input 252 input switching circuit 220 provides is entered operating state to facilitate anti-noise circuit 250, first output 253 exports the first anti-noise signal to left speaker 272 and the second output 254 and exports the second anti-noise signal to right loud speaker 271, sensing circuit 260 has first input end 261, second input 262, first output 263 and the second output 264, wherein first input end 261 connecting leads 211, second input 262 connecting leads 212, whether the control end 2103 of the first output 263 connecting valve circuit 210 provides anti-noise circuit 250 operating voltage with control switch circuit 210, whether the control end 223 of the second output 264 connecting valve circuit 220 carrys out control switch circuit 220 provides anti-noise circuit 250 operating voltage, including noise sensing cell (not being shown in Fig. 7) in anti-noise circuit 250 makes anti-noise circuit 250 to collect environmental noise, wherein noise sensing cell also can be positioned over multiple diverse location or be combined to reach the effect of collecting environmental noise with other assemblies, such as: be separated to and collect environmental noise near earphone or as being included in anti-noise circuit in this case embodiment, also microphone can be utilized to collect environmental noise etc., be not only limited to the mode in embodiment.When sensing circuit 260 via first input end 261 sense pin 211 transmit operating voltage time, first output 263 exports the 6th and controls signal C6 and start to transmit with control switch circuit 210 operating voltage that pin 211 provides, if sensing circuit 260 via first input end 261 sense transmit operating voltage less than pin 211 time, first output 263 exports the 6th and controls signal C6 with the signal of control switch circuit 210 stopping transmission pin 211 to anti-noise circuit 250, when sensing circuit 260 via the second input 262 sense pin 212 transmit operating voltage time, second output 264 exports the 7th and controls signal C7 and carry out control switch circuit 220 and transmit the operating voltage that pin 212 provides, if sensing circuit 260 via the second input 262 sense transmit operating voltage less than pin 212 time, second output 264 exports the 7th control signal C7 and carrys out the signal of control switch circuit 220 stopping transmission pin 212 to anti-noise circuit 250.The 7th control signal C7 that the second output 264 that wherein control end 234 of switching circuit 230 receives sensing circuit 260 exports, when the 7th control signal C7 control switch circuit 220 transmits operating voltage, 7th controls signal C7 control switch circuit 230 transmits pin 213 R channel signal to left speaker 272, and when the 7th controls signal C7 control switch circuit 220 stopping transmission operating voltage, the 7th controls signal C7 control switch circuit 230 transmits pin 212 L channel signal to left speaker 272.This example is carried out control switch circuit with the signal that sensing circuit utilizes sensing to transmit and whether is transmitted this signal and come, and distinguish left and right acoustic channels in response to generally not needing during call, the signal of L channel or R channel is shared to another sound channel to vacate channel to transmit other signals, therefore be not limited to L channel share and share to L channel to R channel or R channel, be also not limited to the signal how sharing left and right acoustic channels.
Fig. 8 is the steps flow chart schematic diagram of the power management way that this case develops out.Be applicable between handheld electronic device and an earphone.This power management way comprises the following steps: whether step S401 detecting has earphone to connect, and whether be connected to portable electric device execution step S402 with detecting for anti-noise earphone in response to earphone, if after being determined as anti-noise earphone, in step S403, portable electric device provides an operating voltage and makes operating voltage provide this operating voltage to the anti-noise circuit in anti-noise earphone via the first pin; And continue detecting in step S404 and whether meet an operating state, and portable electric device execution step S405 makes this operating voltage diverted via to provide this operating voltage to this anti-noise circuit in this anti-noise earphone by the second pin when meeting an operating state.
Fig. 9 is the detailed step of power management way, is applicable between handheld electronic device and an earphone.This power management way comprises the following steps: whether step S501 detecting has earphone to connect, and be connected to the detection signal of portable electric device execution step S502 transmission through an impedance unit in this earphone in response to earphone, and utilize the dividing potential drop relation measuring earphone and impedance unit to differentiate whether this earphone is anti-noise earphone, if be determined as anti-noise earphone, in step S503, portable electric device provides an operating voltage and makes operating voltage provide this operating voltage to the anti-noise circuit in anti-noise earphone via the first pin; And continue detecting in step S504 and whether meet an operating state, this operating state can be microphone using state, and portable electric device performs step S505 stopping by the first pin transmission operating voltage when meeting this operating state, and after a time of delay, change the anti-noise circuit operating voltage that anti-noise earphone is provided by the second pin, and transmit microphone works voltage by the first pin, avoid the power-off that voltage causes when switch operating voltage, produce POP sound, through delay one time of delay, the order ground eliminating POP can be reached.
In sum, because the present invention can utilize the configuration of switching circuit, and reach the intrinsic operating voltage of earphone circuit transmission needed for anti-noise circuit with microphone of use, therefore make the earphone be consistent be implemented anti-noise function.
Although the present invention discloses as above with preferred embodiment, so it is not used for limiting the present invention, anyly has the knack of this those skilled in the art, simple replacement made without departing from the spirit and scope of the present invention, all should be encompassed in protection scope of the present invention.
Claims (13)
1. a portable electric device, can be connected with an anti-noise earphone, it is characterized in that, this portable electric device comprises:
One connecting interface, has one first pin, one second pin and one the 3rd pin;
One first switching circuit, is electrically connected this first pin;
One second switch circuit, is electrically connected this second pin; And
One control circuit, be electrically connected to this connecting interface, this first switching circuit and this second switch circuit, when detecting this anti-noise earphone and being connected to this connecting interface, this control circuit provides an operating voltage and controls this first switching circuit, this operating voltage is allowed to be sent to an anti-noise circuit in this anti-noise earphone via this first switching circuit and this first pin, and when meeting an operating state, this control circuit controls this first switching circuit and this second switch circuit, this operating voltage is turned this anti-noise circuit transferred to by this second pin in this anti-noise earphone.
2. portable electric device as claimed in claim 1, it is characterized in that: described operating state is the state of this anti-noise earphone when using a microphone, and this first switching circuit receives the microphone works voltage that this control circuit produces, when implementing this operating state, this control circuit controls this first switching circuit and becomes this microphone works voltage of transmission to this first pin from transmitting this operating voltage.
3. portable electric device as claimed in claim 1, it is characterized in that: described second switch circuit receives the L channel signal that this control circuit produces, when implementing this operating state, this control circuit controls this second switch circuit and becomes this operating voltage of transmission to this second pin from transmitting this L channel signal.
4. portable electric device as claimed in claim 1, it is characterized in that: described control circuit first controls this first switching circuit under this operating state to be stopped transmitting this operating voltage, and after a time of delay, controls this second switch circuit again start to transmit this operating voltage.
5. portable electric device as claimed in claim 1, it is characterized in that: described 3rd pin receives a R channel signal of this control circuit generation and this control circuit of electric connection, whether this control circuit can have earphone to insert via the 3rd pin change in voltage sensing, and this R channel signal starts to be sent to the 3rd pin after determining to be connected with earphone.
6. portable electric device as claimed in claim 5, it is characterized in that: described control circuit includes an impedance unit and is electrically connected this first switching circuit and this second switch circuit, when this control circuit judges that an earphone is connected with this connecting interface, this control circuit exports the detection signal through this impedance unit, reach in this earphone via this first switching circuit again, utilize the dividing potential drop measuring this earphone and this impedance unit to judge the kind of this earphone.
7. portable electric device as claimed in claim 5, it is characterized in that: described control circuit includes one the 3rd switching circuit, be electrically connected this first switching circuit, this second switch circuit and this impedance unit, when this control circuit judges that an earphone is connected with this connecting interface, this control circuit controls the 3rd switching circuit transmission this detection signal through this impedance unit, reach in earphone via this first switching circuit to facilitate the kind of detecting earphone, and this control circuit controls the 3rd switching circuit and transmits this operating voltage to this anti-noise circuit when being defined as anti-noise earphone.
8. an anti-noise earphone, can be electrically connected to handheld electronic device, and this portable electric device has one first pin, one second pin and one the 3rd pin, and it is characterized in that, this anti-noise earphone comprises:
One microphone, is electrically connected this first pin;
One left speaker, is electrically connected this second pin;
One right loud speaker, is electrically connected the 3rd pin;
One anti-noise circuit, is electrically connected this first pin, this second pin;
One first switching circuit, be electrically connected between this second pin and this anti-noise circuit, when this anti-noise earphone is connected to this portable electric device, this first switching circuit receives this first pin when providing an operating voltage, and this operating voltage is transferred to this anti-noise circuit; And
One second switch circuit, be electrically connected between this first pin and this anti-noise circuit, when meeting state when this anti-noise earphone uses a microphone, this second switch circuit receives this second pin when providing this operating voltage, and this operating voltage is transferred to this anti-noise circuit.
9. anti-noise earphone as claimed in claim 8, is characterized in that: described anti-noise circuit includes a noise sensing cell, can detect the noise intercepting environment.
10. anti-noise earphone as claimed in claim 8, it is characterized in that: also include a sensing circuit, be electrically connected at this first pin, this first switching circuit, this second pin and this second switch circuit, when this anti-noise earphone is connected to this portable electric device, this sensing circuit decides this first switching circuit by the voltage on this first pin of sensing and whether this operating voltage is sent to this anti-noise circuit; And when meeting state when this anti-noise earphone uses a microphone, this sensing circuit decides this second switch circuit by the voltage on this second pin of sensing and whether this operating voltage is sent to this anti-noise circuit.
11. anti-noise earphones as claimed in claim 8, is characterized in that: when this first pin transmits non-this operating voltage of microphone works voltage, this microphone works voltage is sent to this microphone by this first switching circuit.
12. anti-noise earphones as claimed in claim 8, is characterized in that: when this second pin transmits non-this operating voltage of L channel signal, this L channel signal is sent to this left speaker by this second switch circuit.
13. anti-noise earphones as claimed in claim 12, is characterized in that, also comprise:
One the 3rd switching circuit, be electrically connected at this second pin, between the 3rd pin and this left speaker, when this second switch circuit receives this operating voltage that this second pin provides, the R channel signal that the 3rd pin transmits by the 3rd switching circuit is sent to this left speaker or this right loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514988.9A CN104581474A (en) | 2013-10-28 | 2013-10-28 | Handheld electronic device and corresponding ant-noise earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514988.9A CN104581474A (en) | 2013-10-28 | 2013-10-28 | Handheld electronic device and corresponding ant-noise earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104581474A true CN104581474A (en) | 2015-04-29 |
Family
ID=53096506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310514988.9A Pending CN104581474A (en) | 2013-10-28 | 2013-10-28 | Handheld electronic device and corresponding ant-noise earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104581474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554604A (en) * | 2015-12-08 | 2016-05-04 | 潍坊歌尔电子有限公司 | Headset interface conversion device and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201349247Y (en) * | 2008-12-22 | 2009-11-18 | 宇龙计算机通信科技(深圳)有限公司 | Earphone interface circuit and movable termination |
| CN202019436U (en) * | 2011-02-23 | 2011-10-26 | 常州美欧电子有限公司 | Earphone component |
| US20120128185A1 (en) * | 2010-11-24 | 2012-05-24 | Chi Mei Communication Systems, Inc. | Portable electronic device having universal earphone jack |
| CN103248976A (en) * | 2013-02-07 | 2013-08-14 | 安百特半导体有限公司 | Method and equipment for supplying power to noise reduction earphone by utilizing power supply of electronic equipment |
| CN203251412U (en) * | 2013-05-08 | 2013-10-23 | 安百特半导体有限公司 | Device capable of using power source of electronic equipment to supply power to automatic noise cancellation (ANC) earphone |
-
2013
- 2013-10-28 CN CN201310514988.9A patent/CN104581474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201349247Y (en) * | 2008-12-22 | 2009-11-18 | 宇龙计算机通信科技(深圳)有限公司 | Earphone interface circuit and movable termination |
| US20120128185A1 (en) * | 2010-11-24 | 2012-05-24 | Chi Mei Communication Systems, Inc. | Portable electronic device having universal earphone jack |
| CN202019436U (en) * | 2011-02-23 | 2011-10-26 | 常州美欧电子有限公司 | Earphone component |
| CN103248976A (en) * | 2013-02-07 | 2013-08-14 | 安百特半导体有限公司 | Method and equipment for supplying power to noise reduction earphone by utilizing power supply of electronic equipment |
| CN203251412U (en) * | 2013-05-08 | 2013-10-23 | 安百特半导体有限公司 | Device capable of using power source of electronic equipment to supply power to automatic noise cancellation (ANC) earphone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554604A (en) * | 2015-12-08 | 2016-05-04 | 潍坊歌尔电子有限公司 | Headset interface conversion device and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7215766B2 (en) | Headset with auxiliary input jack(s) for cell phone and/or other devices | |
| CN106255003B (en) | Audio processor in the operation control method and terminal device of earphone noise reduction | |
| CN101681617B (en) | Communication apparatus with ambient noise reduction | |
| US8432068B2 (en) | Zero power drain pushbutton on switch | |
| CN103260124B (en) | The audio testing method of mobile terminal and test macro thereof | |
| US8841799B2 (en) | Zero power drain pushbutton controls | |
| CN109348504B (en) | Power detection method, mobile terminal and power detection circuit | |
| CN104159173A (en) | Earphone, earphone application method, earphone control method and device as well as mobile terminal | |
| TW200420075A (en) | Combined and standalone hand held mobile communication system | |
| CN105933823A (en) | Backward compatible system and method for using 4P audio jack to provide power and signal to headset with active noise cancellation | |
| CN201066840Y (en) | Mobile phone with earphone interface multiplexing circuit | |
| CN109981157A (en) | A kind of radio frequency link control method and terminal | |
| CN105323682A (en) | Digital-analog hybrid microphone and earphones | |
| CN110175141A (en) | Method and apparatus relevant to the data transmission of USB connector is passed through | |
| CN207052880U (en) | The earphone interface and mobile terminal of a kind of mobile terminal | |
| CN102768558A (en) | All-in-one computer having function of muting loudspeaker | |
| CN204813896U (en) | Portable hearing detection device | |
| CN102469404A (en) | Debugging method by utilizing earphone audio interface | |
| US20150161979A1 (en) | Handheld electronic apparatus and corresponding noise-canceling headphones | |
| CN102457790A (en) | Active noise reduction earphone and earphone detection device | |
| CN104581474A (en) | Handheld electronic device and corresponding ant-noise earphone | |
| TWI531251B (en) | Handheld electronic apparatus and corresponding noise-canceling headphones | |
| EP2997720B1 (en) | Reduced acoustic coupling | |
| WO2018177242A1 (en) | Bluetooth headset and bluetooth headset-based sharing system | |
| CN112615630B (en) | Circuit and method for improving radio frequency isolation and mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |