CN101958943A - Electronic device applicable to different headset microphones - Google Patents
Electronic device applicable to different headset microphones Download PDFInfo
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- CN101958943A CN101958943A CN2010101699674A CN201010169967A CN101958943A CN 101958943 A CN101958943 A CN 101958943A CN 2010101699674 A CN2010101699674 A CN 2010101699674A CN 201010169967 A CN201010169967 A CN 201010169967A CN 101958943 A CN101958943 A CN 101958943A
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Abstract
The invention mainly relates to an electronic device applicable to different headset microphones. A jack is arranged on the electronic device and is used for coupling a plug of a headset microphone circuit. A control unit and a detection unit are arranged in the electronic device, an output end of the detection unit is coupled to the control unit, and an input end of the detection unit is coupled to microphone channels on the headset microphone circuit through the jack and the plug. When the detection unit detects that the voltage of the input end is greater than a preset threshold value, the headset microphone circuit is a normally closed headset microphone circuit, the control unit operates the headset microphone circuit in a normally closed mode. When the voltage of the input end is smaller than the threshold value, the headset microphone circuit is a normally open headset microphone circuit, and the control unit operates the headset microphone circuit in a normally open mode. The invention can avoid the electronic device from producing error actions because of the insertion of different types of headset microphone circuits.
Description
Technical field
The present invention is about a kind of electronic installation of applicable different ear microphones, particularly relevant for a kind of voltage of judging on the microphone channel that utilizes, it is ear microphone circuit open in usual or normally closed ear microphone circuit that periphery is inserted in decision, makes the automatic respective operations of control circuit be suitable for the electronic installation of pattern.
Background technology
Can provide electronic installation (as music phonographic recorder, mobile phone or the networking telephone) major part of source of sound output/input can provide patchhole in order to support the use of cable earphone microphone, the user also may buy the own earphone of being liked in addition except the earphone of former factory configuration.For the electronic installation of call function is arranged, ear microphone other attached operating key is usually operated the effect of receiving words and answering.Have on the ear microphone circuit design of operating key, the design operating key mode difference of each tame manufacturer generally is divided into normally closed ear microphone and ear microphone open in usual two big classes.Be illustrated in figure 1 as the inner simplified electrical circuit diagram of normally closed ear microphone, microphone 220 and the pattern of operating key 240 for being in series, one end of operating key 240 couples bias voltage and microphone channel 241, the other end couples microphone 220, the output of microphone channel 241 is couple to the joint of ear microphone, in order to insert the jack of electronic installation, all can form open-circuit condition when operating key 240 1 has the then whole holding wire of action (comprising microphone channel 241), the output of microphone channel 241 is a high voltage level.
In addition, be illustrated in figure 2 as the inner simplified electrical circuit diagram of ear microphone open in usual, open in usual is the pattern that microphone 220 and operating key 240 are formed in parallel, one end of operating key 240 couples bias voltage, microphone channel 241 and microphone 220, other end ground connection, all can form short-circuit condition when operating key 240 1 has the then whole holding wire of action, the output of microphone channel 241 is a low-voltage position standard.Since these two kinds multi-form ear microphone circuit do the flowing mode difference, therefore in the design of electronic device circuit, can design especially because of they are different, be difficult to support simultaneously two types ear microphone.
Summary of the invention
At above-mentioned technical problem, the present invention increases detecting unit on the basis that has the electronic installation with communication function now, can make the script user keep the freedom of selecting variety classes ear microphone circuit, the control unit of avoiding that again can be instant uses wrong operator scheme to operate external ear microphone circuit.
Electronic installation provided by the invention comprises: jack, control unit and detecting unit.Jack is in order to couple the joint of message circuit.Detecting unit has output and input, this output couples control unit, this input couples microphone channel on the message circuit via jack and joint, when this detecting unit is detected first voltage on this input greater than threshold value, this control unit is operated this message circuit with the normally closed pattern, when this first voltage less than this threshold value, this control unit is operated this message circuit with pattern open in usual.
Wherein, the message circuit more comprises operating key, in order to connect or to hang up incoming call, produces first voltage when this operating key is pressed.
Further, the message circuit more comprises bias terminal and microphone circuit, bias terminal is arranged on the joint, when joint is arranged at jack, receive second voltage via this jack, an end of operating key couples this bias terminal and this microphone channel, the other end of this operating key couples this microphone circuit, when this operating key was pressed, first voltage that this circuit for detecting is detected on this microphone channel was higher than threshold value, and this message circuit is a normally closed ear microphone circuit.Further, when first voltage on the circuit for detecting detecting microphone channel was higher than threshold value, the output output high levels signal of this circuit for detecting made this control unit respective operations normally closed ear microphone circuit to control unit.
Perhaps further, the message circuit more comprises bias terminal and microphone circuit, bias terminal is arranged on the joint, when this joint is arranged at jack, receive second voltage via this jack, an end of operating key couples this bias terminal, microphone channel and this microphone circuit, the other end of this operating key is coupled to earth terminal, when this operating key was pressed, first voltage that this circuit for detecting is detected on this microphone channel was lower than threshold value, and this message circuit is an ear microphone circuit open in usual.Further, when first voltage on the circuit for detecting detecting microphone channel was lower than threshold value, the output output low level signal of this circuit for detecting made this this control unit respective operations ear microphone circuit open in usual to control unit.
Jack can be arranged on the shell of electronic installation, and major function is that the message circuit can be the combinational circuit of data control circuit, microphone circuit or earphone and microphone as the interface that couples the message terminal; Jack and joint pairing are provided with, and are example with earphone and microphone circuit, can be 2.5mm/3.5mm joint and jack or the joint of micro USB and jack etc.
Electronic installation inside is provided with control unit and detecting unit, control unit can be peripheral control wafer to have GPIO (General Purpose Input Output) interface and is connected with detecting unit, sees through the GPIO interface and comes interpretation whether the generation of interrupting signal or detection signal is arranged; Detecting unit has output and input, output couples the GPIO interface of control unit, input couples microphone channel on the message circuit via jack and joint, the speech sound signal that microphone channel transmits in order to the transmission microphone circuit, voltage on detecting unit detecting input is greater than threshold value, control unit is with normally closed pattern operation message circuit, and the voltage on input is less than threshold value, and this control unit is operated this message circuit with pattern open in usual.
When electronic installation had telephony feature, the operating key on the message circuit was in order to connect or to hang up incoming call, promptly when electronic installation is conversed, can press operating key, mute microphone (MIC) and earphone are promptly when electronic installation receives electric signal, press operating key, can open microphone and earphone; When pressing, operating key produces the voltage on the input.The message circuit includes bias terminal and is arranged on the joint, when joint inserts the jack of electronic installation, receives bias voltage via jack.
When the message circuit is normally closed ear microphone circuit, one end of operating key couples bias terminal and microphone channel, the other end of operating key couples this microphone circuit, when this operating key is pressed, the voltage that the input of circuit for detecting can detect on the microphone channel is higher than threshold value, the meeting output output high levels signal of circuit for detecting makes the normally closed ear microphone circuit of this control unit respective operations insertion to control unit.
When the message circuit is ear microphone circuit open in usual, one end of operating key couples bias terminal, microphone channel and microphone circuit, the other end of operating key is coupled to electronegative potential (as ground connection), when this operating key is pressed, the voltage that the input of circuit for detecting detects on the microphone channel is lower than threshold value, the output output low level signal (as the zero-bit standard) of circuit for detecting makes the normally closed ear microphone circuit of control unit respective operations insertion to control unit.
This detecting unit comprises out drain electrode (open drain) detecting voltage wafer, when detecting unit is detected first voltage on this input greater than threshold value, the output output high levels signal of detecting unit is given control unit, when this first voltage less than threshold value, the output of detecting unit output zero accurate signal is given this control unit.Further, when control unit detected high levle, this control unit sent corresponding communication condition and opens or closes microphone and earphone.
Wherein, electronic installation can be mobile phone, and this message circuit is the ear microphone circuit.
By the present invention, electronic installation is differentiated often open or normally closed ear microphone circuit and do respective operations, and, just realized the function of judging only by increasing detecting unit, can avoid the erroneous judgement of electronic installation.
Description of drawings
Fig. 1 is the inner simplified electrical circuit diagram of normally closed ear microphone.
Fig. 2 is the inner simplified electrical circuit diagram of ear microphone open in usual.
Fig. 3 is the system block diagrams of electronic installation of the present invention and ear microphone circuit.
Fig. 4 is the electronic installation internal circuit.
Embodiment
For making purpose of the present invention, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows now.
See also Fig. 3, provide an embodiment to be used for explaining orally the present invention, present embodiment is relevant to coupling of electronic installation 10 and message circuit 20, and electronic installation 10 can be phonographic recorder, mobile phone or a networking telephone; Message circuit 20 is microphone or ear microphone circuit.Electronic installation 10 comprises: jack 130, control unit 110 and detecting unit 120.Message circuit 20 comprises: head circuit 210, microphone circuit 220, joint 230 and operating key 240.Head circuit 210 can be integrated into one to be shaped with microphone circuit 220 and be connected to joint 230 via signal line (not shown), or head circuit 210 is coupled to an end of signal line for individual module, joint 230 is arranged at the other end of signal line, 220 centres that are arranged at signal line of microphone circuit make things convenient for the user to use.
The inside of signal line has microphone channel 241 and earphone passage 242 respectively in order to be connected in series and to link up signal from head circuit 210 and microphone circuit 220 to electronic installation 10; Can comprise earth connection, grid bias power supply line, information transmission line or sync signal line (not shown) does not in addition describe in detail in signal line inside herein in addition, operating key 240 can be arranged on the signal line, main and microphone channel 241 couples, please refer to Fig. 1 and Fig. 2, operating key 240 has the different modes of connection respectively in ear microphone circuit open in usual and normally closed ear microphone circuit.
When if the voltage that detecting unit 120 detects input 122 is lower than a preset threshold value, detecting unit 120 sends a low level signal (can be the zero-bit standard) via output 121 and gives control unit 110, therefore control unit 110 can assert that message circuit 20 is an ear microphone circuit open in usual, and then control unit 110 couples correct voltage level and the pattern of jack 130 uses via winding displacement 111 and operates ear microphone circuit open in usual.
Fig. 4 has disclosed actual electronic installation internal circuit, internal signal line 243 couples jack 130, after joint 230 inserts jack 130, internal signal line 243 can receive the signal on the microphone channel 241, and internal signal line 243 is sent to control unit 110 and detecting unit 120 respectively with the signal of receiving.
By the present invention, electronic installation is differentiated often open or normally closed ear microphone circuit and do respective operations, and, just realized the function of judging only by increasing detecting unit, can avoid the erroneous judgement of electronic installation.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, change of being done and retouching without departing from the spirit and scope of the present invention all belongs to scope of patent protection of the present invention.
Claims (9)
1. electronic installation is characterized in that comprising:
Jack is in order to couple the joint of message circuit;
Control unit; And
Detecting unit, have output and input, this output couples this control unit, this input couples microphone channel on this message circuit via this jack and this joint, when this detecting unit is detected first voltage on this input greater than threshold value, this control unit is operated this message circuit with the normally closed pattern, when this first voltage less than this threshold value, this control unit is operated this message circuit with pattern open in usual.
2. electronic installation as claimed in claim 1 is characterized in that this message circuit more comprises operating key, in order to connect or to hang up incoming call, produces this first voltage when this operating key is pressed.
3. electronic installation as claimed in claim 2 is characterized in that this message circuit more comprises:
Bias terminal is arranged on this joint, when this joint is arranged at this jack, receives second voltage via this jack;
Microphone circuit, an end of this operating key couples this bias terminal and this microphone channel, and the other end of this operating key couples this microphone circuit;
Wherein, when this operating key was pressed, this first voltage that this circuit for detecting is detected on this microphone channel was higher than this threshold value, and this message circuit is a normally closed ear microphone circuit.
4. electronic installation as claimed in claim 3, it is characterized in that when this circuit for detecting is detected this first voltage on this microphone channel and is higher than this threshold value, this output output high levels signal of this circuit for detecting makes this normally closed ear microphone circuit of this control unit respective operations to this control unit.
5. electronic installation as claimed in claim 2 is characterized in that this message circuit more comprises:
Bias terminal is arranged on this joint, when this joint is arranged at this jack, receives second voltage via this jack;
Microphone circuit, an end of this operating key couples this bias terminal, this microphone channel and this microphone circuit, and the other end of this operating key is coupled to earth terminal;
Wherein, when this operating key was pressed, this first voltage that this circuit for detecting is detected on this microphone channel was lower than this threshold value, and this message circuit is an ear microphone circuit open in usual.
6. electronic installation as claimed in claim 5, it is characterized in that when this circuit for detecting is detected this first voltage on this microphone channel and is lower than this threshold value, this output output low level signal of this circuit for detecting makes this ear microphone circuit open in usual of this this control unit respective operations to this control unit.
7. electronic installation as claimed in claim 1, it is characterized in that this detecting unit comprises out drain voltage detecting wafer, when this detecting unit is detected this first voltage on this input greater than this threshold value, the output output high levels signal of this detecting unit is given this control unit, when this first voltage less than this threshold value, the output of this detecting unit output zero accurate signal is given this control unit.
8. electronic installation as claimed in claim 7 is characterized in that when this control unit detected high levle, this control unit sent corresponding communication condition and opens or closes microphone and earphone.
9. electronic installation as claimed in claim 1 is characterized in that this electronic installation is a mobile phone, and this message circuit is the ear microphone circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101699674A CN101958943A (en) | 2010-04-07 | 2010-04-07 | Electronic device applicable to different headset microphones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101699674A CN101958943A (en) | 2010-04-07 | 2010-04-07 | Electronic device applicable to different headset microphones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101958943A true CN101958943A (en) | 2011-01-26 |
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ID=43486043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101699674A Pending CN101958943A (en) | 2010-04-07 | 2010-04-07 | Electronic device applicable to different headset microphones |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101958943A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012174986A1 (en) * | 2011-06-23 | 2012-12-27 | 炬力集成电路设计有限公司 | Direct drive circuitry and method for hot plug detection of audio line end |
| CN106210976A (en) * | 2014-12-01 | 2016-12-07 | 天津威盛电子有限公司 | Quadrupole Headphone device and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201204638Y (en) * | 2007-01-05 | 2009-03-04 | 苹果公司 | System and single-pin plug |
| CN101448034A (en) * | 2008-12-26 | 2009-06-03 | 符文剑 | PTT controller used in intercom headset |
-
2010
- 2010-04-07 CN CN2010101699674A patent/CN101958943A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201204638Y (en) * | 2007-01-05 | 2009-03-04 | 苹果公司 | System and single-pin plug |
| CN101448034A (en) * | 2008-12-26 | 2009-06-03 | 符文剑 | PTT controller used in intercom headset |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012174986A1 (en) * | 2011-06-23 | 2012-12-27 | 炬力集成电路设计有限公司 | Direct drive circuitry and method for hot plug detection of audio line end |
| CN106210976A (en) * | 2014-12-01 | 2016-12-07 | 天津威盛电子有限公司 | Quadrupole Headphone device and control method |
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Application publication date: 20110126 |