CN1774141A - Detecting device for ear phone with speeking function and operating method thereof - Google Patents
Detecting device for ear phone with speeking function and operating method thereof Download PDFInfo
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- CN1774141A CN1774141A CN 200410052089 CN200410052089A CN1774141A CN 1774141 A CN1774141 A CN 1774141A CN 200410052089 CN200410052089 CN 200410052089 CN 200410052089 A CN200410052089 A CN 200410052089A CN 1774141 A CN1774141 A CN 1774141A
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Abstract
A detection device of earphone with communication function consists of fixed leaf module for fixing input terminal of earphone with communication function and for outputting the positioning detection signal; sub voltage circuit with the first end, the second end and the third end as its the first end being coupled to comparator, the second end being coupled to fixed leaf module and the third end being used to receive operation voltage; comparator for outputting request interruption signal of receiving / hanging - up after sub voltage is compared with preset voltage.
Description
[technical field]
The invention relates to a kind of arrangement for detecting and method for detecting with call function earphone, and particularly whether press and hang up/answer (Push-to-Talk is called for short PTT) switch and whether the Handless earphone has inserted the arrangement for detecting of location relevant for a kind of user of detecting.
[background technology]
Figure 1A is that the input terminal of tool call function earphone couples schematic diagram.Please refer to Figure 1A, input terminal (Terminal) 10 is applicable to the earphone with call function, and input terminal 10 is divided into four sections, and it is respectively L channel end 11, R channel end 13, microphone end 15 and earth terminal 17.Wherein, L channel end 11 is coupled to L channel loudspeaker 19, and R channel end 13 is coupled to R channel loudspeaker 21, and the positive input terminal of microphone (micro phone) 23 is coupled to microphone end 15, and earth terminal 17 is ground connection then.
Figure 1B is an input terminal coupler structure chart.Please refer to Figure 1A and Figure 1B, input terminal coupler 20 includes earth terminal clip 33, microphone end clip 27, R channel clip 29 and L channel clip 31, and input terminal coupler 20 is coupled to system 30.When input terminal 10 inserts input terminal coupler 20, and after arriving the location, the earth terminal clip 33 of input terminal coupler 20, microphone end clip 27, R channel clip 29 and L channel clip 31, corresponding respectively earth terminal 17, microphone end 15, R channel end 13 and the L channel end 11 that is coupled to input terminal 10, and L channel clip 31 just imbeds in the groove 10a of L channel end 11.When be coupled to microphone 23 hang up/answer switch 25 conductings the time, then system 30 can be by input terminal 10 and above-mentioned earphone exchange voice signal with call function.
Referring again to Figure 1A and 1B figure, relatively, when hanging up/answering switch 25 escapes, the above-mentioned earphone with call function is answered the described state of hanging up that presents in theory, and just representative system can not expend power supply at the above-mentioned earphone with call function of driving 30 this moments.But in fact, when hanging up/answering switch 25 escapes,, may make system's 30 erroneous judgements, and make above-mentioned earphone present the state of answering with call function if when outside sound is too big (for example people's voice).
[summary of the invention]
The object of the present invention is to provide a kind of arrangement for detecting of tool call function earphone, it can detect the insertion state of hanging up/answer switch and earphone of whether being pressed by the user.
For achieving the above object, the invention provides a kind of arrangement for detecting of tool call function earphone, this tool call function earphone comprises receiving/hang-up (Push-to-Talk, PTT) switch and microphone.And arrangement for detecting provided by the invention comprises clip module, bleeder circuit and comparator.Wherein, the clip module is fixed the input terminal of this tool call function earphone, and according to the contact condition of input terminal and clip module, in order to output location detection signal.Bleeder circuit has first end, second end and the 3rd end.Its second end couples the clip module, and its 3rd termination is brought drill to an end and made voltage, and according to the contact condition of clip module and input terminal with when the receiving/hang-up switch conduction whether, by first end output branch pressure voltage of bleeder circuit.Comparator has positive signal input, negative signal input and output.Its positive signal input is coupled to first end of bleeder circuit, and the negative signal input end grounding, and comparator makes comparisons according to branch pressure voltage and a predeterminated voltage, in order to output receiving/hang-up request interrupt signal.The contact condition of aforesaid clip module and input terminal comprises state in the insertion, positioning states and do not insert state.
Preferred embodiment of the present invention is described, and the clip module has comprised earth terminal clip, microphone end clip, R channel retainer spring and L channel clip.Wherein, the earth terminal clip is coupled to the earth terminal of input terminal.Microphone end clip is coupled to the microphone end of input terminal, in order to transmit the voice signal by the microphone input.The R channel clip then is coupled to the R channel end of input terminal, so far has a R channel of call function earphone in order to transmit voice signal.And the L channel clip is coupled to the L channel end of input terminal, so far has a L channel of call function earphone in order to transmit voice signal.
Simultaneously, above-mentioned bleeder circuit comprises first resistance and second resistance.First resistance has first end and second end, and its first termination is brought drill to an end and made voltage, and its second end is coupled to the positive signal input of comparator.Second resistance also has first end and second end, and its first end is coupled to second end of first resistance, and its second end then is coupled to microphone end clip.Wherein, first end of first resistance is the 3rd end of bleeder circuit, and second end of second resistance is second end of bleeder circuit, and second end of first resistance is first end of bleeder circuit.
Above-mentioned clip module comprises the location sense terminal, be used to contact condition when not inserting state, the output logic state is " 1 " the location detection signal, and the branch pressure voltage of bleeder circuit output will be greater than predeterminated voltage, and by comparator output logic state is " 1 " receiving/hang-up request interrupt signal.
When contact condition in inserting during state, the location sense terminal with the output logic state is " 0 " the location detection signal, and branch pressure voltage will be less than predeterminated voltage, and by comparator output logic state is " 0 " receiving/hang-up request interrupt signal.
When contact condition during for positioning states, the location sense terminal with the output logic state be " 0 " and the location detection signal, and enable the receiving/hang-up function, and the branch pressure voltage of bleeder circuit output will be greater than predeterminated voltage, and by comparator then the output logic state be " 1 " and receiving/hang-up request interrupt signal.
When contact condition is changed into when not inserting state by positioning states, the location sense terminal with the output logic state is " 1 " the location detection signal, and forbid (Disable) receiving/hang-up function.
When contact condition is positioning states, and when the user presses the receiving/hang-up switch, the location sense terminal with the output logic state be " 0 " and the location detection signal, and the branch pressure voltage of bleeder circuit output will be less than in predeterminated voltage, and comparator then output logic state is " 0 " receiving/hang-up request interrupt signal.
Arrangement for detecting provided by the present invention more comprises a CPU that is coupled to clip module and comparator, in order to receive and to judge that according to receiving/hang-up request interrupt signal and location detection signal this has the state of the earphone of call function at present.Wherein when branch pressure voltage during less than predeterminated voltage, CPU then in a Preset Time with software detecting receiving/hang-up request interrupt signal for several times, in order to judge whether the user presses the receiving/hang-up switch.
Above-mentioned Preset Time is 40 milliseconds, and above-mentioned predeterminated voltage comprises about 1.2 volts.
Another purpose of the present invention just provides a kind of method of operation of arrangement for detecting of tool call function earphone, is applicable to the contact condition of the input terminal of the clip module of judging arrangement for detecting and tool call function earphone.This method of operation comprises: according to the contact condition of clip module and input terminal, to produce location detection signal and branch pressure voltage.Make comparisons with branch pressure voltage and a predeterminated voltage again, and answer/the interrupt requests interrupt signal according to result's output relatively.Wherein contact condition comprise the state of insertion, insert in state and positioning states.
Arrangement for detecting provided by the present invention can judge whether above-mentioned input terminal with earphone of call function is inserted into the location by the state of receiving/hang-up interrupt request singal and location detection signal.And method for detecting of the present invention, whether really be receiving/hang-up switch conduction, and make earphone present the state of answering if can judge.And can not make above-mentioned earphone present conducting state because of extraneous background sound is excessive with call function.
[description of drawings]
Figure 1A is that the input terminal with call function earphone couples schematic diagram.
Figure 1B is an input terminal coupler structure chart.
Fig. 2 is the arrangement for detecting circuit diagram of the tool call function earphone of a preferred embodiment of the present invention.
Fig. 3 is the method for detecting flow chart of the tool call function earphone of a preferred embodiment of the present invention.
Fig. 4 is the method for detecting flow chart of the tool call function earphone of hookup 3.
[embodiment]
Fig. 2 is the arrangement for detecting circuit diagram of the tool call function earphone of a preferred embodiment of the present invention.Please merge with reference to Figure 1A and Fig. 2, arrangement for detecting of the present invention is applicable to the earphone that has call function among Figure 1A.In the present embodiment, arrangement for detecting comprises clip module 40, bleeder circuit 50 and comparator 55.Wherein, the positive signal input 55a of comparator 55 is coupled to the first end 53a of bleeder circuit 50, and is coupled to clip module 40 by the second end 53b of bleeder circuit 50, the negative signal input 55b ground connection of comparator 55.Bleeder circuit 50 also has the 3rd end 51a, and its 3rd end 51a is coupled to operating voltage Vcc (being about 1.68V).Arrangement for detecting of the present invention can be exported two signals, the receiving/hang-up request interrupt signal (PTT_IRQ) that one of them is exported for the output 55c of comparator 55, another then is that clip module 40 can be sent location detection signal (HP_DET) by location sense terminal 45a.And it for example is CPU 57 that above two signals can be sent into, and whether presses receiving/hang-up switch 25 to judge the user.
Please continue with reference to Figure 1A and Fig. 2, clip module 40 comprises earth terminal clip 47, microphone end clip 41, R channel clip 43 and L channel clip 45.The function of clip module 40 is fixing input terminal 10.When inserting clip modules 40 to the location to input terminal 10 among Figure 1A for example, L channel clip 45 can be coupled to the L channel end 11 of input terminal 10,43 of R channel clips are coupled to R channel end 13, and L channel clip 45 just imbeds in the groove 10a of L channel end 11.L channel clip 45 and R channel clip 43 can transmit voice signal, by corresponding respectively L channel loudspeaker 19 and the R channel loudspeaker 21 of sending into earphone of input terminal 10.41 of microphone end clips are when input terminal 10 inserts the location, are coupled to microphone end 15.41 of microphone end clips are to transmit the voice signal that is entered by microphone 23.And earth terminal clip 47 is coupled to the earth terminal 17 of input terminal 10.
Please continue with reference to Figure 1A and Fig. 2, L channel clip 45 has location sense terminal 45a, in order to output location detection signal (HP_DET).When input terminal 10 does not also insert clip module 40, because L channel clip 45 couples pull-up resistor 49 to operating voltage Vcc, the level of therefore locating detection signal end 45a is operating voltage Vcc, and the logic state of locating detection signal (HP_DET) this moment is " 1 ".When input terminal 10 is entering clip module 40 because the spring between clip module 40 and the input terminal 10, so the logic state of location detection signal (HP_DET) might for " 1 ", also might for " 0 ".When the L channel end 11 of input terminal 10 is couple to L channel clip 45, or input terminal 10 arrives when locating, present short circuit between L channel clip 45 and the earth terminal 17, the logic state of therefore locating detection signal (HP_DET) can be fixed as " 0 ".
In the present embodiment, bleeder circuit is made up of first resistance 51 and second resistance 53, wherein, and R53=1K Ω, R51=0.68K Ω.First resistance 51 a wherein end couples the 3rd end 51a that operating voltage Vcc is a bleeder circuit 50, and the other end then couples and be coupled to the positive signal input 55a of comparator 55 mutually with second resistance 53, is the first end 53a of bleeder circuit 50.Second resistance 53 a wherein end couples first resistance 51, and the other end then is coupled to clip module 40, is the second end 53b of bleeder circuit 50.
In the present embodiment, the predeterminated voltage of comparator 55 for example is set at 1.2V, that is to say that the branch pressure voltage level as positive signal input 55a is higher than 1.2V, and then comparator 55 is output as logic state " 1 "; Otherwise comparator 55 is output as logic state " 0 ".When input terminal 10 did not also insert clip module 40, the branch pressure voltage level of positive signal input 55a was Vcc (can greater than 1.2V), so comparator 55 can the output logic states be " 1 " receiving/hang-up request interrupt signal (PTT_IRQ).When input terminal 10 inserts the process of clip module 40, because input terminal 10 also is less than the location, therefore L channel end 11, R channel end 13, the microphone end 15 of 10 of input terminals form short circuits with earth terminal 17, and cause microphone end clip 41 ground connection, bleeder circuit 50 meetings this moment produce branch pressure voltage V and be:
That is to say that the voltage level at comparator 55 positive signal input 55a is approximately 1.0V (less than 1.2V), so the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) can change into " 0 ".
Please continue with reference to Figure 1A and Fig. 2, when input terminal 10 inserted clip module 40 and arrives the location, this moment was because the internal resistance of microphone for example is 4.55K Ω, so the bleeder circuit 50 branch pressure voltage V that produces is:
That is to say that the voltage level at comparator 55 positive signal input 55a is approximately 1.5V, so the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) is continuously " 1 ".And when the receiving/hang-up switch of the earphone that has call function among Figure 1A is switched on, it be identical with (1) that bleeder circuit 50 meetings this moment produce branch pressure voltage V, that is to say that the voltage level at comparator 55 positive signal input 55a is approximately 1.0V (less than 1.2V), so the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) can become also " 0 ".Below we will locate the logic state of detection signal (HP_DET) and receiving/hang-up request interrupt signal (PTT_IRQ), be table (1) with the arrangement of the meaning of its state representative.
| (HP_DET) | (PTT_IRQ) | The |
| 1 | 1 | Input terminal does not insert the reed stuck-module as yet |
| 1 | 0 | During input terminal inserts |
| 0 | 1 | Input terminal is inserted into the location |
| 0 | 0 | During input terminal inserts or the receiving/hang-up switch is switched on |
Table (1)
Fig. 3 is the method for detecting flow chart of the tool call function earphone of a preferred embodiment of the present invention.Please refer to Figure 1A, Fig. 2 and Fig. 3, we can summarize method for detecting provided by the present invention from above embodiment.At first, shown in step S310, the arrangement for detecting of tool call function earphone produces location detection signal (HP_DET) and receiving/hang-up request interrupt signal (PTT_IRQ) according to clip module 40 and input terminal 10 contact conditions.And shown in step S320, the contact condition of clip module 40 and input terminal 10 do not insert state, insert in state and three kinds of situations such as positioning states.
Please continue with reference to Figure 1A, Fig. 2 and Fig. 3, as step S321 when clip module 40 and input terminal 10 contact conditions when not inserting state, the logic state of locating detection signal (HP_DET) is " 1 ".Shown in step S322, and when clip module 40 and input terminal 10 contact conditions in inserting during state, the logic state of location detection signal (HP_ET) is " 0 ", to such an extent as to shown in step S323 and S324, branch pressure voltage V (1.0V) can make the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) be less than predeterminated voltage (1.2V) " 0 ".
Fig. 4 is the method for detecting flow chart of the tool call function earphone of hookup 3.Please continue with reference to Figure 1A, Fig. 2, Fig. 3 and Fig. 4, shown in step S325, when clip module 40 and input terminal 10 contact conditions during for positioning states, the logic state of locating detection signal (HP_DET) still is " 0 ".And shown in step S326, step S327 and step S328, receiving/hang-up switch 25 can be activated, and branch pressure voltage V (1.5V) meeting is greater than predeterminated voltage (1.2V), so that the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) still is " 1 ".If this moment, clip module 40 and input terminal 10 contact conditions were changed into when not inserting state by positioning states shown in step S411, can be shown in step S412 and step S413, the logic state of location detection signal (HP_DET) can become " 1 ".Please refer to Figure 1A and Fig. 2, can see, when the logic state of location detection signal (HP_DET) and receiving/hang-up request interrupt signal (PTT_IRQ) is simultaneously from table (1) " 0 " time have two kinds of situations.In fact, also have the third situation, be exactly after input terminal 10 arrives the location, though receiving/hang-up switch 25 is the escape state, but because the sound (for example people's voice) of background is too big, still may allow the voltage level of positive signal input 55a of comparator 55 be lower than 1.2V, make the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) also can become " 0 ".According to normal situation, when 25 conductings of receiving/hang-up switch, the logic state of location detection signal (HP_DET) and receiving/hang-up request interrupt signal (PTT_IRQ) can be simultaneously " 0 ", represent this earphone to be the state of answering with call function.But the logic state of location detection signal (HP_DET) and receiving/hang-up request interrupt signal (PTT_IRQ) is simultaneously " 0 " possible situation have three kinds, will cause erroneous judgement.
Please continue with reference to Figure 1A, Fig. 2, Fig. 3 and Fig. 4, after receiving/hang-up switch 25 is activated, if shown in step S421, if when the user presses receiving/hang-up switch 25.This moment is shown in step S422, S423 and S424, the logic state of location detection signal (HP_DET) is " 0 ", and branch pressure voltage V this moment (1.0V) is less than predeterminated voltage (1.2V), so that the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) also is simultaneously " 0 ".For another example shown in the step S425, for example the judgment means of CPU 57 runs into said circumstances, will be in a Preset Time (for example 40ms), with the logic state that for example is programmed in the software detecting receiving/hang-up request interrupt signal (PTT_IRQ) in the CPU 57, whether press receiving/hang-up switch 25 to judge the user.Because be shown in step S421, the person of being to use presses receiving/hang-up switch 25.Therefore the result of these 10 times detectings, the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) all can for " 0 ".If but because the sound (for example people's voice) of background is too big, and cause the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) to be " 0 " time, the result of these 10 times detectings, the logic state of receiving/hang-up request interrupt signal (PTT_IRQ) can not be entirely " 0 ".
Though present embodiment will be set at 40ms the scheduled time, and pre-determined number is set at 10 times, does not limit the present invention with this.Be familiar with this operator and can do suitable adjustment according to the needs of itself.
From as can be known above, the present invention has following advantage at least:
1. can judge whether the input terminal 10 of the earphone of a tool call function arrives the location with the logic state of location detection signal (HP_DET) and receiving/hang-up request interrupt signal (PTT_IRQ).
2. the present invention so can be not under the situation of escape at receiving/hang-up switch 25, causes erroneous judgement because external sound is too big because the mechanism of checking is provided, and makes the unnecessary power supply of waste drive earphone.
3. use element to simplify, only use location detection signal (HP_DET) and two kinds of output signals of receiving/hang-up request interrupt signal (PTT_IRQ), and adding that one second resistance 53 just can do accurate judgement, so can reduce manufacturing cost.
Claims (21)
1. the arrangement for detecting of a tool call function earphone, described tool call function earphone comprises a receiving/hang-up switch and a microphone, it is characterized in that described arrangement for detecting comprises:
One clip module, an input terminal of fixing described tool call function earphone, and a contact condition of described input terminal of foundation and described clip module are in order to export a location detection signal;
One bleeder circuit, have one first end, one second end and one the 3rd end, described second end couples described clip module, described the 3rd termination is received an operating voltage, and according to described contact condition with when described receiving/hang-up switch conduction whether, export a branch pressure voltage by described first end of described bleeder circuit; And
One comparator, have a positive signal input, a negative signal input and an output, described positive signal input is coupled to described first end of described bleeder circuit, described negative signal input end grounding, described comparator is made comparisons according to a described branch pressure voltage and a predeterminated voltage, in order to export a receiving/hang-up request interrupt signal;
Wherein said contact condition comprise one insert in state, positioning states and do not insert state.
2. the arrangement for detecting of the earphone of tool call function according to claim 1 is characterized in that: described clip module comprises:
One earth terminal clip is coupled to the earth terminal of described input terminal;
One microphone end clip is coupled to the microphone end of described input terminal, in order to transmit the voice signal by described microphone input;
One R channel clip is coupled to the R channel end of described input terminal, in order to transmit the R channel of described voice signal to described tool call function earphone; And
One L channel clip is coupled to the L channel end of described input terminal, in order to transmit the L channel of described voice signal to described tool call function earphone.
3. the arrangement for detecting of the earphone of tool call function according to claim 2 is characterized in that: described bleeder circuit comprises:
One first resistance has first end and second end, and first termination of described first resistance is received an operating voltage, and second end of described first resistance is coupled to the described positive signal input of described comparator; And
One second resistance has first end and second end, and first end of described second resistance is coupled to second end of described first resistance, and second end of described second resistance then is coupled to described microphone end clip;
Wherein, first end of described first resistance is described the 3rd end of described bleeder circuit, and second end of described second resistance is described second end of described bleeder circuit, and second end of described first resistance is described first end of described bleeder circuit.
4. the arrangement for detecting of the earphone of tool call function according to claim 1, it is characterized in that: described clip module comprises a location sense terminal, be used to described contact condition and be described when not inserting state, the output logic state is " 1 " described location detection signal, and the described branch pressure voltage of described bleeder circuit output will be greater than described predeterminated voltage, and by described comparator output logic state is " 1 " described receiving/hang-up request interrupt signal.
5. the arrangement for detecting of the earphone of tool call function according to claim 4, it is characterized in that: described contact condition is in the described insertion during state, described location sense terminal with the output logic state is " 0 " described location detection signal, and described branch pressure voltage will be less than described predeterminated voltage, and by described comparator output logic state is " 0 " described receiving/hang-up request interrupt signal.
6. the arrangement for detecting of the earphone of tool call function according to claim 4, it is characterized in that: when described contact condition is described positioning states, described location sense terminal with the output logic state is " 0 " described location detection signal, and enable a receiving/hang-up function, and the described branch pressure voltage of described bleeder circuit output will be greater than described predeterminated voltage, and described comparator then output logic state is " 1 " described receiving/hang-up request interrupt signal.
7. the arrangement for detecting of the earphone of tool call function according to claim 6, it is characterized in that: described contact condition is changed into described when not inserting state by described positioning states, described location sense terminal with the output logic state is " 1 " described location detection signal, and forbid described receiving/hang-up function.
8. the arrangement for detecting of the earphone of tool call function according to claim 4, it is characterized in that: described contact condition is described positioning states, and when the user presses next receiving/hang-up switch, described location sense terminal with the output logic state is " 0 " described location detection signal, and the described branch pressure voltage of described bleeder circuit output will be less than in described predeterminated voltage, and described comparator then output logic state is " 0 " described receiving/hang-up request interrupt signal.
9. the arrangement for detecting of the earphone of tool call function according to claim 8, it is characterized in that: more comprise a CPU that is coupled to clip module and comparator, in order to receive and to judge described state at present with earphone of call function according to described receiving/hang-up request interrupt signal and described location detection signal.
10. the arrangement for detecting of the earphone of tool call function according to claim 9, it is characterized in that: when described branch pressure voltage during less than described predeterminated voltage, described CPU is then detected described receiving/hang-up request interrupt signal several times with software in a Preset Time, in order to judge whether the user presses described receiving/hang-up switch.
11. the arrangement for detecting of the earphone of tool call function according to claim 10 is characterized in that: described Preset Time is 40 milliseconds.
12. the arrangement for detecting of the earphone of tool call function according to claim 1 is characterized in that: described predeterminated voltage comprises about 1.2 volts.
13. the method for operation of the arrangement for detecting of a tool call function earphone is applicable to a contact condition of an input terminal of the clip module of judging described arrangement for detecting and described tool call function earphone to it is characterized in that described method of operation comprises:
According to described contact condition, produce a location detection signal and a branch pressure voltage;
Make comparisons with a described branch pressure voltage and a predeterminated voltage, and export one and answer/the interrupt requests interrupt signal; And
Wherein, described contact condition comprise one do not insert state, insert in state and a positioning states.
14. the method for operation of the arrangement for detecting of tool call function earphone according to claim 13, it is characterized in that: described contact condition is described when not inserting state, the logic state of described location detection signal is " 1 ", and described branch pressure voltage will be greater than described predeterminated voltage, and make described receiving/hang-up request interrupt signal logic state for " 1 ".
15. the method for operation of the arrangement for detecting of tool call function earphone according to claim 13, it is characterized in that: described contact condition is in the described insertion during state, the logic state of described location detection signal is " 0 ", and described branch pressure voltage will be less than described predeterminated voltage, and make described receiving/hang-up request interrupt signal logic state for " 0 ".
16. the method for operation of the arrangement for detecting of tool call function earphone according to claim 13, it is characterized in that: when described contact condition is described positioning states, the logic state of described location detection signal is " 0 ", and enable a receiving/hang-up function, and described branch pressure voltage will be greater than described predeterminated voltage, and make described receiving/hang-up request interrupt signal logic state for " 1 ".
17. the method for operation of the arrangement for detecting of tool call function earphone according to claim 16, it is characterized in that: described contact condition is changed into described when not inserting state by described positioning states, the logic state of described location detection signal is " 1 ", and forbid described receiving/hang-up function.
18. the method for operation of the arrangement for detecting of tool call function earphone according to claim 16, it is characterized in that: described contact condition is described positioning states, and when the user presses next receiving/hang-up switch, the logic state of described location detection signal is " 0 ", and described branch pressure voltage will be less than described predeterminated voltage, and make described receiving/hang-up request interrupt signal logic state for " 0 ".
19. the method for operation of the arrangement for detecting of tool call function earphone according to claim 18, it is characterized in that: when described branch pressure voltage during less than described predeterminated voltage, then in a Preset Time, detect described receiving/hang-up request interrupt signal several times, in order to judge whether the user presses described receiving/hang-up switch with software.
20. the method for operation of the arrangement for detecting of tool call function earphone according to claim 19 is characterized in that: described Preset Time is 40 milliseconds.
21. the method for operation of the arrangement for detecting of tool call function earphone according to claim 13 is characterized in that: described predeterminated voltage comprises about 1.2 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052089 CN1774141A (en) | 2004-11-08 | 2004-11-08 | Detecting device for ear phone with speeking function and operating method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052089 CN1774141A (en) | 2004-11-08 | 2004-11-08 | Detecting device for ear phone with speeking function and operating method thereof |
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| CN1774141A true CN1774141A (en) | 2006-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410052089 Pending CN1774141A (en) | 2004-11-08 | 2004-11-08 | Detecting device for ear phone with speeking function and operating method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505333A (en) * | 2008-12-18 | 2009-08-12 | 上海闻泰电子科技有限公司 | Mobile terminal having direct recording function and direct recording method thereof |
| CN101308187B (en) * | 2008-06-27 | 2010-08-18 | 华为终端有限公司 | Method and terminal for detecting earphones plug inserting to position |
| CN102325228A (en) * | 2011-08-22 | 2012-01-18 | 惠州Tcl移动通信有限公司 | Mobile phone and method for reducing energy consumption of headset of mobile phone |
| CN105301386A (en) * | 2015-09-23 | 2016-02-03 | 广东欧珀移动通信有限公司 | OTG detection circuit and mobile terminal with OTG detection circuit |
-
2004
- 2004-11-08 CN CN 200410052089 patent/CN1774141A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308187B (en) * | 2008-06-27 | 2010-08-18 | 华为终端有限公司 | Method and terminal for detecting earphones plug inserting to position |
| CN101505333A (en) * | 2008-12-18 | 2009-08-12 | 上海闻泰电子科技有限公司 | Mobile terminal having direct recording function and direct recording method thereof |
| CN102325228A (en) * | 2011-08-22 | 2012-01-18 | 惠州Tcl移动通信有限公司 | Mobile phone and method for reducing energy consumption of headset of mobile phone |
| CN105301386A (en) * | 2015-09-23 | 2016-02-03 | 广东欧珀移动通信有限公司 | OTG detection circuit and mobile terminal with OTG detection circuit |
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Open date: 20060517 |