CN106465005A - Earphone type identification method, apparatus and terminal device - Google Patents
Earphone type identification method, apparatus and terminal device Download PDFInfo
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- CN106465005A CN106465005A CN201580027985.XA CN201580027985A CN106465005A CN 106465005 A CN106465005 A CN 106465005A CN 201580027985 A CN201580027985 A CN 201580027985A CN 106465005 A CN106465005 A CN 106465005A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Abstract
Disclosed in an embodiment of the present invention is an earphone type identification method, comprising: when it is detected that both of voltage values of a left sound channel pin and a right sound channel pin of an earphone socket are at low power levels, measuring a voltage value on a microphone pin of the earphone socket; and identifying a type of a to-be-detected earphone according to the voltage value on the microphone pin of the earphone socket. Accordingly, also provided in the embodiment of the present invention are an earphone type identification apparatus and terminal device. Reliability of earphone type identification is increased by implementing the embodiment of the present invention.
Description
The present embodiments relate to the communications field, more particularly to a kind of headset type recognition methods, device and terminal device.
Mobile phone or other audio frequency apparatuses much all have earphone socket, and earphone has point of 3 pin and 4 pin on pin number, and 4 pin earphones are usually used in the equipment such as mobile phone, and 4 general pin earphone socket standards have two：OMTP (Open Mobile Terminal Platform, develop mobile-terminal platform, abbreviation OMTP) and CTIA (Cellular Telephone Industry Association, cellular telephone industry association, abbreviation CTIA), both standards are consistent with the definition in R channel sound channel pin in left channel pin, but contrast in the definition on Mike's pin and earphone grounding pin.Equipment is in order to support two kinds of 4 pin earphone, it is necessary to which headset type is identified after earphone insertion earphone interface, the recognition methods of current headset type is：When detecting the magnitude of voltage in left channel pin for low level, start the identification process for the type for treating test earphone.
But, the mechanical shaking in contact is easily produced during earphone insertion earphone socket, cause the confusion of the upper magnitude of voltage in left channel pin, so as to earphone occur and just start headset type identification process when being not fully inserted into earphone interface, so cause the type identification mistake of earphone, therefore there is insecure problem in current headset type recognition methods.
The content of the invention
The embodiment of the present invention provides a kind of headset type identifying device, method and terminal device, it is possible to resolve headset type recognizes insecure problem in the prior art.
In order to solve the above-mentioned technical problem, first aspect of the embodiment of the present invention provides a kind of headset type identifying device, including：
Processor, earphone socket, first resistor, second resistance, the first power supply and second source, the earphone socket includes left channel pin, right channel pin, Mike's pin, earphone grounding pin, and the processor includes the first input and output I/O pin, the second I/O pin, the 3rd I/O pin and chip ground pin；Its
In,
One end of the first resistor is connected with first power supply, and the other end of the first resistor is connected with the left channel pin and first I/O pin respectively；
One end of the second resistance is connected with the second source, and the other end of the second resistance is connected with the right channel pin and second I/O pin respectively；
3rd I/O pin is connected with Mike's pin, and the chip ground pin is connected with the earphone grounding pin；
When the processor is low level for the magnitude of voltage detected on first I/O pin and second I/O pin, the magnitude of voltage on the 3rd I/O pin is measured, the type of earphone to be detected is recognized according to the magnitude of voltage on the 3rd I/O pin.
With reference in a first aspect, in the first possible implementation, in addition to：
3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance, the processor also include：4th I/O pin and the 5th I/O pin, the earphone socket also include：Detective pin, wherein,
Described 3rd resistor one end is connected with first I/O pin, and the other end of the 3rd resistor is connected with the left channel pin, is connected by the first resistor with first power supply respectively；
One end of 5th resistance is connected with the 4th I/O pin, and the other end of the 5th resistance is connected with the second source by the second resistance, is connected with the right channel pin and is connected by the 4th resistance with second I/O pin respectively；
One end of 6th resistance is connected with the 5th I/O pin, and the other end of the 6th resistance is connected with the detective pin, when the earphone to be detected inserts the socket, the detective pin and the left channel pin short circuit.
With reference to the first possible implementation of first aspect, in second of possible implementation, in addition to：First electric capacity, the second electric capacity, the 3rd electric capacity and the 4th electric capacity, wherein,
One end of first electric capacity is connected with first I/O pin and the 3rd resistor respectively, the other end ground connection of first electric capacity；
One end of second electric capacity is connected with second I/O pin and the 4th resistance respectively, the other end ground connection of second electric capacity；
One end of 3rd electric capacity is connected with the detective pin and the 6th resistance respectively, the other end ground connection of the 3rd electric capacity；
One end of 4th electric capacity respectively with the 5th resistance, the second resistance, the 4th resistance
It is connected with the right channel pin, the other end ground connection of the 4th electric capacity.
With reference to second of possible implementation of first aspect, in the third possible implementation, in addition to：First voltage-regulator diode, the second voltage-regulator diode, the 3rd voltage-regulator diode and the 4th voltage-regulator diode, wherein,
One end of first voltage-regulator diode is connected with the first resistor, 3rd resistor and the left channel pin respectively, the other end ground connection of first voltage-regulator diode；
One end of second voltage-regulator diode is connected with the 4th electric capacity, the 5th resistance, the second resistance, the 4th resistance and the right channel pin respectively, the other end ground connection of second voltage-regulator diode；
One end of 3rd voltage-regulator diode is connected with the 3rd electric capacity, the 6th resistance and the detective pin respectively, the other end ground connection of the 3rd voltage-regulator diode；
One end of 4th voltage-regulator diode is distinguished the 3rd I/O pin and is connected with Mike's pin, the other end ground connection of the 4th voltage-regulator diode.
With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation, in addition to：First magnetic bead, the second magnetic bead and the 3rd magnetic bead, wherein,
One end of first magnetic bead connects the 3rd voltage-regulator diode, the 3rd electric capacity and is connected with the 6th resistance respectively, and the other end of first magnetic bead is connected with the detective pin；
One end of second magnetic bead connects the second resistance, the 4th resistance, the 4th electric capacity and is connected with the 5th resistance respectively, and the other end of second magnetic bead is connected with the right channel pin；
One end of 3rd magnetic bead connects the 4th voltage-regulator diode and the 3rd I/O pin respectively, and the other end of the 3rd magnetic bead connects Mike's pin.
With reference to any one of first aspect into the 4th kind of possible implementation, in the 5th kind of possible implementation, in addition to：7th resistance, the 8th resistance and the 5th voltage-regulator diode, wherein,
The earphone grounding pin is connected by the 5th voltage-regulator diode with the chip ground pin, 7th resistance is in parallel with the 5th voltage-regulator diode, one end of 8th resistance is connected with the chip ground pin and the 5th voltage-regulator diode respectively, the 8th resistance other end ground connection.
With reference to any one of first aspect into the 5th kind of possible implementation, in the 6th kind of possible implementation, in addition to：Controlling switch, the processor also includes the 6th I/O pin, and the controlling switch of controlling switch is connected with the 6th I/O pin, and the controlling switch is used for the order of connection for switching the earphone grounding pin and Mike's pin.
Second aspect of the embodiment of the present invention provides a kind of terminal device, including above-mentioned headset type identifying device described in any one.
The third aspect of the embodiment of the present invention provides a kind of headset type recognition methods, including：
When the magnitude of voltage detected in the left channel pin of earphone socket and the right channel pin of the earphone socket is low level, the magnitude of voltage on Mike's pin of the earphone socket is measured；
The type of earphone to be detected is recognized according to the magnitude of voltage on Mike's pin of the earphone socket.
With reference to the third aspect, in the first possible implementation, when the magnitude of voltage in the right channel pin of the left channel pin for detecting earphone socket and the earphone socket is low level, the magnitude of voltage measured on Mike's pin of the earphone socket includes：
When the magnitude of voltage detected in the left channel pin of the earphone socket is low level, the magnitude of voltage in the right channel pin of the earphone socket is measured；
If the magnitude of voltage in the right channel pin of the earphone socket is low level, the magnitude of voltage on Mike's pin of the earphone socket is measured.
With reference to the third aspect and the first possible implementation, in second of possible implementation,
After the type of magnitude of voltage identification earphone to be detected on Mike's pin according to the earphone socket, in addition to：
If the type of the earphone to be detected is not preset kind, switch the order of connection of Mike's pin of the earphone socket and the earphone grounding pin of the earphone socket.
Fourth aspect of the embodiment of the present invention provides a kind of headset type identifying device, including：Earphone socket, detection module and identification module, wherein,
The earphone socket includes left channel pin, right channel pin and Mike's pin；
When the magnitude of voltage that the detection module is used to detect in the left channel pin is low level, the magnitude of voltage in the right channel pin is measured,
If the magnitude of voltage that the identification module is used in the right channel pin is low level, the magnitude of voltage on Mike's pin is measured.
With reference to fourth aspect, in the first possible implementation, when the magnitude of voltage that the detection module is used to detect in the left channel pin is low level, the magnitude of voltage in the right channel pin is measured；If the magnitude of voltage in the right channel pin is low level, the magnitude of voltage on Mike's pin is measured.
With reference to fourth aspect or the first possible implementation, in second of possible implementation, in addition to：
Handover module, if the type for earphone to be detected is not preset kind, switches the order of connection of Mike's pin and the earphone grounding pin.
The aspect of the embodiment of the present invention the 5th provides a kind of computer program product, the computer program product includes read/write memory medium, the read/write memory medium is used to store computer program code, and on a processor, the computer program code includes for the computer program code operation：
When for detecting the magnitude of voltage in the left channel pin of earphone socket and the right channel pin of the earphone socket being low level, the magnitude of voltage on Mike's pin of the earphone socket is measured；
Magnitude of voltage on Mike's pin according to the earphone socket recognizes the type of earphone to be detected.
With reference to the 5th aspect, in the first possible implementation, the computer program code includes：
During for detecting the magnitude of voltage in the left channel pin for low level, the magnitude of voltage in the right channel pin is measured；If the magnitude of voltage in the right channel pin is low level, the magnitude of voltage on Mike's pin is measured.
With reference to the 5th aspect or the first possible implementation, in second of possible implementation, the computer program code also includes：
If the type for the earphone to be detected is not preset kind, switch the order of connection of Mike's pin and the earphone grounding pin.
Implement the present invention, have the advantages that：
The magnitude of voltage for measuring the first I/O pin being connected with the left channel pin of earphone socket becomes and measured the magnitude of voltage for the second I/O pin being connected with the right channel pin of earphone socket, if the magnitude of voltage on the first I/O pin and the second I/O pin is low level, determine that the stabilization of earphone to be detected is inserted into earphone socket, start to start the process of earphone to be detected, it thus is avoided that and starts the mistake that headset detection process causes headset type to recognize during insertion in earphone, improves the reliability of headset type identification.
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for headset type identifying device that the embodiment of the present invention one is provided；
Fig. 2 a and Fig. 2 b are respectively the OMTP types and CTIA type earphones that the embodiment of the present invention two is provided
Terminal order arrangement figure；
Fig. 3 is the terminal order arrangement figure for the CTIA type earphones that the embodiment of the present invention three is provided；
Fig. 4 is a kind of schematic flow sheet for headset type recognition methods that the embodiment of the present invention four is provided；
Fig. 5 is a kind of another structural representation of headset type identifying device provided in an embodiment of the present invention.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The headset type identifying device of the embodiment of the present invention is arranged in the terminal device of a 4 pin earphone sockets of support, terminal device can be mobile phone, tablet personal computer, desktop computer, music player etc., and 4 pin earphone sockets can compatibility OMTP types, CTIA types and three-section earphone.When the magnitude of voltage in one of sound channel pin that headset type identifying device detects earphone socket is low level, measure the magnitude of voltage in another sound channel pin of earphone socket, if the magnitude of voltage in another sound channel pin is also low level, that is the magnitude of voltage of two sound channel pins of earphone socket is low level, show that now earphone to be detected is complete and stable to be inserted into earphone socket, will not occur mechanical oscillation again, the type of earphone to be detected is so recognized at steady-state, improves the reliability of headset type identification.Headset type identifying device starts the state machine of headset type identification, headset type identifying device determines the headset type of earphone to be detected by measuring the magnitude of voltage on Mike's pin, due to the difference of headset type to be detected, the electret mike of earphone to be detected is it is possible that forward bias, three kinds of situations of reverse bias and ground connection, magnitude of voltage in the case of these three on Mike's pin is differed, and the type of earphone to be detected is determined according to different magnitudes of voltage.
It is a kind of circuit diagram of headset type detection means provided in an embodiment of the present invention referring to Fig. 1, in embodiments of the present invention, the headset type detection circuit includes：Processor U1, earphone socket J1,3rd resistor R3, the 4th resistance R4, the first power vd D1 and second source VDD2, earphone socket J1 includes left channel pin LEFT, right channel pin RIGHT, Mike's pin MIC and earphone grounding pin JGND, processor U1 includes the first input and output I/O pin 1, the second I/O pin 2, the 3rd I/O pin 3 and chip ground pin UGND, wherein, the first power vd D1 and second source VDD2 can be same power supply.The annexation of above-mentioned part is：
First resistor R1 one end is connected with the first power vd D1, and the first resistor R1 other end is connected with left channel pin LEFT and the first I/O pin 1 respectively；
Second resistance R2 one end is connected with second source VDD2, and the second resistance R2 other end is connected with right channel pin RIGHT and the second I/O pin 2 respectively；3rd I/O pin 3 is connected with Mike's pin MIC, and chip ground pin UGND is connected with earphone grounding pin JGND.
The operation principle of the headset type detection means is：In the case where headset plug is not inserted into earphone socket J1, according to Fig. 1, it is high level that the magnitude of voltage on processor U1 the first I/O pin, which is equal to the first power vd D1 magnitude of voltage, the i.e. magnitude of voltage of the first I/O pin,；The magnitude of voltage that magnitude of voltage on processor U1 the second I/O pin is equal on second source VDD2 magnitude of voltage, i.e. the second I/O pin is high level.When the magnitude of voltage that processor U1 detects on the first I/O pin 1 and the second I/O pin 2 is low level, start to measure the magnitude of voltage on the 3rd I/O pin 3, and determine according to the magnitude of voltage on the 3rd I/O pin 3 type of earphone to be detected.Wherein, processor U1 can first measure the magnitude of voltage on the first I/O pin 1, measure the magnitude of voltage on the second I/O pin 2 again if low level；Or magnitude of voltage on the second I/O pin 2 is first measured, measure the magnitude of voltage on the first I/O pin 1 again if low level.
The principle to the embodiment of the present invention exemplified by first measuring the magnitude of voltage of the first I/O pin 1 is illustrated below：Magnitude of voltage on processor U1 periodically the first I/O pins of detection, when headset plug is not inserted into earphone socket J1, when the magnitude of voltage that processor is measured on the first I/O pin is high level, now processor does not start the process of identification headset type.
In the case where the headset plug of earphone to be detected is inserted into earphone socket J1, the L terminals of headset plug are connected with earphone socket J1 left channel pin LEFT, first power vd D1 can be grounded (being not drawn into figure) by the left speaker of first resistor R1 and earphone to be detected, magnitude of voltage on processor U1 the first I/O pin 1 can be pulled low, the impedance of the loudspeaker of earphone to be detected is generally 32 Ω, assuming that the first power vd D1 magnitude of voltage is V1, then the magnitude of voltage on processor U1 the first I/O pin 1 is equal to (V1*32)/(32+R1), wherein first resistor R1 resistance is much larger than 32 Ω, for example, first resistor R1 typical resistance values are more than 1K Ω, now the magnitude of voltage on the first I/O pin is low level.Simultaneously, the R terminals of headset plug are connected with earphone socket J1 right channel pin RIGHT, second source VDD2 can be grounded (being not drawn into figure) by the right loudspeaker of second resistance R2 and earphone to be detected, magnitude of voltage on processor U1 the second I/O pin 2 can be pulled low, the impedance of the loudspeaker of earphone to be detected is generally 32 Ω, assuming that second source VDD2 magnitude of voltage is V2, then the magnitude of voltage on processor U1 the second I/O pin 2 is equal to (V2*32)/(32+R2), wherein second resistance R2 resistance is much larger than 32 Ω, for example, the second electricity
The typical resistance values for hindering R2 are more than 1K Ω, and now the magnitude of voltage on the second I/O pin 2 is low level.
Magnitude of voltage on processor U1 periodically the first I/O pins 1 of detection, when reaching detection cycle, the magnitude of voltage that processor U1 can detect on the first I/O pin 1 is low level, then start to detect the magnitude of voltage on the second I/O pin 2, now the magnitude of voltage on the second I/O pin 2 is also low level, processor U1 determines that the first I/O pin 1 and the second I/O pin 2 are met while when being low level condition, processor U1 measures the magnitude of voltage on the 3rd I/O pin 3, and the type of insertion earphone socket J1 earphone to be detected is determined according to the magnitude of voltage on the 3rd I/O pin 3.For example, assuming that the headset type identifying device acquiescence of the embodiment of the present invention supports the earphone of OMTP types, when the earphone of OMTP types is inserted into earphone socket J1, the electret mike of earphone is forward bias, and the magnitude of voltage that processor U1 is measured on the 3rd I/O pin 3 is V3；If the earphone of CTIA types is inserted into earphone socket J1, the electret mike of earphone is reverse bias, and the magnitude of voltage that processor U1 is measured on the 3rd I/O pin is V4；If three-section earphone is inserted into earphone socket J1, the Mike's pin MIC and earphone grounding pin JGND short circuits of earphone socket, now, the magnitude of voltage that processor U1 is measured on the 3rd I/O pin 3 are 0, wherein V4 ＞ V3 ＞ 0.
Implement embodiments of the invention, the magnitude of voltage for measuring the first I/O pin being connected with the left channel pin of earphone socket becomes and measured the magnitude of voltage for the second I/O pin being connected with the right channel pin of earphone socket, if the magnitude of voltage on the first I/O pin and the second I/O pin is low level, determine that the stabilization of earphone to be detected is inserted into earphone socket, start to start the process of earphone to be detected, it thus is avoided that and starts the mistake that headset detection process causes headset type to recognize during insertion in earphone, improves the reliability of headset type identification.
Optionally, the headset type identifying device also includes：3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance, the processor also include：4th I/O pin and the 5th I/O pin, the socket also include：Detective pin, wherein,
Described 3rd resistor one end is connected with first I/O pin, and the other end of the 3rd resistor is connected with the left channel pin, is connected by the first resistor with first power supply respectively；
One end of 5th resistance is connected with the 4th I/O pin, and the other end of the 5th resistance is connected with the second source by the second resistance, is connected with the right channel pin and is connected by the 4th resistance with second I/O pin respectively；
One end of 6th resistance is connected with the 5th I/O pin, and the other end of the 6th resistance is connected with the detective pin, when the earphone to be detected inserts the socket, the detective pin and the left side
Sound channel pin short circuit.
Specifically, 3rd resistor, the resistance of 4th resistance the 5th and the 6th resistance play metering function, when earphone to be detected is not inserted into earphone socket, first I/O pin of processor, second I/O pin, 3rd I/O pin and the 4th I/O pin are loaded directly into the voltage of the first power supply and second source, 3rd resistor prevents that the current value on the first I/O pin is excessive, 4th resistance prevents that the current value on the second I/O pin is excessive, 5th resistance prevents that the current value on the 3rd I/O pin is excessive, 6th resistance prevents that the electric current of the 4th I/O pin is excessive, each I/O pin of processor can effectively be protected.
Optionally, the headset type identifying device also includes the first electric capacity, the second electric capacity, the 3rd electric capacity and the 4th electric capacity, wherein,
One end of first electric capacity is connected with first I/O pin and the 3rd resistor respectively, the other end ground connection of first electric capacity；
One end of second electric capacity is connected with second I/O pin and the 4th resistance respectively, the other end ground connection of second electric capacity；
One end of 3rd electric capacity is connected with the detective pin and the 6th resistance respectively, the other end ground connection of the 3rd electric capacity；
One end of 4th electric capacity is connected with the 5th resistance, the second resistance, the 4th resistance and the right channel pin respectively, the other end ground connection of the 4th electric capacity.
Specifically, first electric capacity is used to filter out input to the AC compounent of the voltage of the first I/O pin, second electric capacity is used for the AC compounent for filtering out the voltage of the I/O pin of input value second, and instantaneous AC compounent influences judgement of the processor to the level value on the first I/O pin and the second I/O pin.3rd electric capacity and the 3rd electric capacity are used to filter out the high-frequency noise in voice signal, such as 900MHz or 1800MHz high-frequency noise.
Optionally, the headset type identifying device also includes：First voltage-regulator diode, the second voltage-regulator diode, the 3rd voltage-regulator diode and the 4th voltage-regulator diode, wherein,
One end of first voltage-regulator diode is connected with the first resistor, 3rd resistor and the left channel pin respectively, the other end ground connection of first voltage-regulator diode；
One end of second voltage-regulator diode is connected with the 4th electric capacity, the 5th resistance, the second resistance, the 4th resistance and the right channel pin respectively, the other end ground connection of second voltage-regulator diode；
One end of 3rd voltage-regulator diode is connected with the 3rd electric capacity, the 6th resistance and the detective pin respectively, the other end ground connection of the 3rd voltage-regulator diode；
One end of 4th voltage-regulator diode is distinguished the 3rd I/O pin and is connected with Mike's pin, the other end ground connection of the 4th voltage-regulator diode.
Specifically, four voltage-regulator diodes are used to the magnitude of voltage on corresponding pin carrying out clamper, to suppress input to the instantaneous high pressure of processor, it is to avoid processor is in overvoltage condition.
Optionally, the headset type identifying device also includes：First magnetic bead, the second magnetic bead and the 3rd magnetic bead, wherein,
One end of first magnetic bead connects the 3rd voltage-regulator diode, the 3rd electric capacity and is connected with the 6th resistance respectively, and the other end of first magnetic bead is connected with the detective pin；
One end of second magnetic bead connects the second resistance, the 4th resistance, the 4th electric capacity and is connected with the 5th resistance respectively, and the other end of second magnetic bead is connected with the right channel pin；
One end of 3rd magnetic bead connects the 4th voltage-regulator diode and the 3rd I/O pin respectively, and the other end of the 3rd magnetic bead connects Mike's pin.
Specifically, when being conversed using earphone, high-frequency signal may interfere with voice signal, and three magnetic beads are used to suppress left channel pin, the high-frequency noise in right channel pin and spike interference, while having the ability for absorbing electrostatic pulse.
Optionally, the headset type identifying device also includes：7th resistance, the 8th resistance and the 5th voltage-regulator diode, wherein,
The earphone grounding pin is connected by the 5th voltage-regulator diode with the chip ground pin, 7th resistance is in parallel with the 5th voltage-regulator diode, one end of 8th resistance is connected with the chip ground pin and the 5th voltage-regulator diode respectively, the 8th resistance other end ground connection.
Specifically, 7th resistance and the 8th resistance are in parallel with the 5th voltage-regulator diode, 7th resistance and the 8th resistance play shunting action, and the 5th voltage-regulator diode its voltage clamping effect prevents the voltage of the chip ground pin input electrostatic of processor from causing to damage to processor.
Optionally, the headset type identifying device also includes：Also include：Controlling switch, the processor also includes the 6th I/O pin, and the control end of controlling switch is connected with the 6th I/O pin, and the controlling switch is used for the order of connection for switching the earphone grounding pin and Mike's pin.
Specifically, when the type of earphone to be detected is not preset kind, processor sends switching signal by the 6th I/O pin to the control end of controlling switch, and controlling switch receives switching signal, switching earphone grounding pin and the order of connection for buying a pin, to be adapted to earphone to be detected.
Referring to Fig. 3, another circuit for being a kind of headset type identification circuit that embodiment is provided for the present invention
Figure, in embodiments of the present invention, the headset type identifying device includes：
Processor U1, the first power vd D1 and second source VDD2, first resistor R1 are to the 8th resistance R8, the first electric capacity C1 to the 4th electric capacity C4, the first voltage-regulator diode Z1 to the 5th voltage-regulator diode Z5, the first magnetic bead M1 to the 3rd magnetic bead M3, controlling switch SW1, earphone socket J1, wherein, processor U1 include the I/O pin 6 of the first I/O pin 1 to the 6th, chip ground pin UGND, earphone socket J1 include left channel pin LEFT, right channel pin RIGHT, earphone grounding pin JGND, detective pin DET, Mike's pin MIC and rise fixation fixation pin NC.
The annexation of above-mentioned part is：Processor U1 the first I/O pin 1 is connected respectively at the first electric capacity C1 one end with 3rd resistor R3 one end, first electric capacity C1 other end ground connection, one end, the first voltage-regulator diode Z1 one end and the left channel pin of the 3rd resistor R3 other end respectively with first resistor R1 are connected, the first resistor R1 other end is connected with the first power vd D1, the first voltage-regulator diode Z1 other end ground connection；
Processor U1 the second I/O pin 2 is connected with the second electric capacity C2 one end and the 4th resistance R4 one end respectively, second electric capacity C2 other end ground connection, the 4th resistance R4 other end is connected with right channel pin RIGHT by the second magnetic bead M2, is grounded, is connected by second resistance R2 with second source VDD2 and is connected by the 5th resistance R5 with processor U1 the 4th I/O pin 4 by the second voltage-regulator diode Z2 ground connection, by the 4th electric capacity C4 respectively.
Processor U1 the 3rd I/O pin 3 is connected by the 4th voltage-regulator diode Z4 ground connection, by the 3rd magnetic bead M3 with Mike's pin MIC respectively；
Processor U1 the 5th I/O pin 5 is connected with the 6th resistance R6 one end, and the 6th resistance R6 other end is connected by the 3rd electric capacity C3 ground connection, by the 3rd voltage-regulator diode Z3 ground connection, by the first magnetic bead M1 with detective pin DET respectively；
Earphone socket J1 earphone grounding pin JGND is connected with the 5th voltage-regulator diode Z5 one end, the 5th voltage-regulator diode Z5 other end is connected by the 8th resistance eutral grounding, with processor U1 chip ground pin UGND respectively, and the 7th resistance R7 and the 5th voltage-regulator diode Z5 are in parallel.Controlling switch SW1 is connected across on Mike's pin MIC and earphone grounding pin JGND connecting line, controlling switch SW1 controlling switch connection processor U1 the 6th I/O pin 6.
It is OMTP types referring to the headset type in Fig. 2 a and Fig. 2 b, Fig. 2 a, the headset type in Fig. 2 b is CTIA types, it can be seen that two kinds of earphone, L terminals and putting in order for R terminals are
Consistent, GND terminal and putting in order for MIC terminals are opposite.The headset plug of earphone to be detected it is complete and stable when being inserted into earphone socket J1, the L terminals of headset plug can be connected with earphone socket J1 left channel pin LEFT and detective pin DET.If headset type is the type that headset type identifying device is given tacit consent to, the MIC terminals of headset plug are connected with the MIC pins of earphone socket, and the GND terminal of headset plug is connected with the JGND terminals of earphone socket.If the MIC pins of earphone socket are not the types of headset type identifying device acquiescence, in an initial condition, the MIC terminals of headset plug are connected with earphone socket J1 earphone grounding pin JGND, the GND terminal of headset plug is connected with Mike's pin of earphone socket, and the multimedia function (such as microphone and line traffic control) of earphone so to be detected can not be used.
The operation principle of the headset type identifying device of the embodiment of the present invention is：When the magnitude of voltage that processor U1 detects on the first I/O pin 1 and the second I/O pin 2 is low level, the magnitude of voltage on the 3rd I/O pin 3 of measurement, and determine according to the magnitude of voltage on the 3rd I/O pin the type of earphone to be detected.
Illustrated by taking the magnitude of voltage that processor U1 is first detected on the first I/O pin as an example：Magnitude of voltage on processor U1 periodically the first I/O pin 1 of detection, when the magnitude of voltage on the first I/O pin 1 is low level, continue to detect the magnitude of voltage on the second I/O pin, if the magnitude of voltage on the second I/O pin 2 is also low level, processor U1 starts to start the process for the headset type that identification is inserted into earphone.Processor U1 measures the magnitude of voltage on the 3rd I/O pin 3, if magnitude of voltage is in preset threshold range, it is determined that earphone to be detected is the headset type that headset type identifying device gives tacit consent to 4 segmentations supported；If the magnitude of voltage on the 3rd I/O pin 3 is not in preset threshold range and is not 0, it is determined that earphone to be detected does not give tacit consent to the headset type for 4 segmentations supported for headset type identifying device；If the magnitude of voltage on the 3rd I/O pin is 0, it is determined that earphone to be detected is 3 segmentation earphones.When the headset type for 4 segmentations that earphone to be detected is not supported for acquiescence, processor U1 is sending control signal by six I/O pins 6 to controlling switch SW1 controlling switch, control signal is used for the line sequence for the connecting line for making controlling switch switch earphone grounding pin MIC and Mike's pin MIC, to match the headset type being currently inserted into, controlling switch SW1 can be realized by double-point double-throw switch.After the adapting operation of headset type is completed, microcontroller U1 is also by the 4th I/O pin 4 and the 5th I/O pin 5 respectively to right channel pin LEFT and left channel pin RIGHT exports audio signals.
It is a kind of schematic flow sheet of headset type recognition methods provided in an embodiment of the present invention, in embodiments of the present invention, methods described includes referring to Fig. 4：
When magnitude of voltage in S401, the left channel pin for detecting earphone socket and the earphone socket right channel pin is low level, the magnitude of voltage on Mike's pin of the earphone socket is measured.
Specifically, what the headset type recognition methods can be realized based on the headset type identifying device of embodiment one, headset type identifying device includes processor, earphone socket, first resistor, second resistance, the first power supply and second source, the earphone socket includes left channel pin, right channel pin, Mike's pin, earphone grounding pin, and the processor includes the first input and output I/O pin, the second I/O pin, the 3rd I/O pin and chip ground pin；Wherein,
One end of the first resistor is connected with first power supply, and the other end of the first resistor is connected with the left channel pin and first I/O pin respectively；
One end of the second resistance is connected with the second source, and the other end of the second resistance is connected with the right channel pin and second I/O pin respectively；
3rd I/O pin is connected with Mike's pin, and the chip ground pin is connected with the earphone grounding pin；
Processor is detected with the magnitude of voltage on first I/O pin and second I/O pin when being low level, measures the magnitude of voltage on the 3rd I/O pin, and the type of earphone to be detected is recognized according to the magnitude of voltage on the 3rd I/O pin.
S402, the type for recognizing according to the magnitude of voltage on Mike's pin of the earphone socket earphone to be detected.
Further, when the magnitude of voltage in the left channel pin for detecting earphone socket and the right channel pin of the earphone socket is low level, the magnitude of voltage measured on Mike's pin of the earphone socket includes：
When the magnitude of voltage detected in the left channel pin of the earphone socket is low level, the magnitude of voltage in the right channel pin of the earphone socket is measured；
If the magnitude of voltage in the right channel pin of the earphone socket is low level, the magnitude of voltage on Mike's pin of the earphone socket is measured.
Further, after the type of the magnitude of voltage identification earphone to be detected on Mike's pin according to the earphone socket, in addition to：
If the type of the earphone to be detected is not preset kind, switch the order of connection of Mike's pin of the earphone socket and the earphone grounding pin of the earphone socket.
The embodiment of the present invention and device embodiment one and two are based on same design, and the technique effect that it brings is also identical, specifically refer to the description of device embodiment one and two, here is omitted.
Implement embodiments of the invention, the magnitude of voltage for measuring the first I/O pin being connected with the left channel pin of earphone socket becomes and measured the magnitude of voltage for the second I/O pin being connected with the right channel pin of earphone socket, if the magnitude of voltage on the first I/O pin and the second I/O pin is low level, ear to be detected is determined
Being inserted into earphone socket for the stabilization of machine, starts to start the process of earphone to be detected, thus is avoided that and starts the mistake that headset detection process causes headset type to recognize during insertion in earphone, improves the reliability of headset type identification.
It is a kind of another structural representation of headset type identifying device provided in an embodiment of the present invention, in embodiments of the present invention, the headset type identifying device includes referring to Fig. 5：Earphone socket 50, detection module 51 and identification module 52.
Earphone socket 50 includes left channel pin LEFT, right channel pin RIGHT and Mike's pin MIC；
When the magnitude of voltage that detection module 51 is used to detect in left channel pin is low level, the magnitude of voltage in measurement right channel pin,
If the magnitude of voltage that identification module 52 is used in right channel pin is low level, the magnitude of voltage on measurement Mike's pin recognizes the type of earphone to be detected according to the magnitude of voltage on Mike's pin.
Optionally, the headset type identifying device also includes：Handover module 53.
Handover module 53, if the type for earphone to be detected is not preset kind, switches the order of connection of Mike's pin and earphone grounding pin.
The embodiment of the present invention is corresponding with embodiment of the method, specifically can refer to the description of embodiment of the method, here is omitted.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, computer program is can be by instruct the hardware of correlation to complete, described program can be stored in a computer read/write memory medium, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..
Above disclosed is only a kind of preferred embodiment of the invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that realizing all or part of flow of above-described embodiment, and the equivalent variations made according to the claims in the present invention, still fall within and invent covered scope.
Claims (17)
- A kind of headset type identifying device, it is characterised in that including：Processor, earphone socket, first resistor, second resistance, the first power supply and second source, the earphone socket includes left channel pin, right channel pin, Mike's pin, earphone grounding pin, and the processor includes the first input and output I/O pin, the second I/O pin, the 3rd I/O pin and chip ground pin；Wherein,One end of the first resistor is connected with first power supply, and the other end of the first resistor is connected with the left channel pin and first I/O pin respectively；One end of the second resistance is connected with the second source, and the other end of the second resistance is connected with the right channel pin and second I/O pin respectively；3rd I/O pin is connected with Mike's pin, and the chip ground pin is connected with the earphone grounding pin；When the processor is low level for the magnitude of voltage detected on first I/O pin and second I/O pin, the magnitude of voltage on the 3rd I/O pin is measured, the type of earphone to be detected is recognized according to the magnitude of voltage on the 3rd I/O pin.
- Device as claimed in claim 1, it is characterised in that also include：3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance, the processor also include：4th I/O pin and the 5th I/O pin, the earphone socket also include：Detective pin, wherein,Described 3rd resistor one end is connected with first I/O pin, and the other end of the 3rd resistor is connected with the left channel pin, is connected by the first resistor with first power supply respectively；One end of 5th resistance is connected with the 4th I/O pin, and the other end of the 5th resistance is connected with the second source by the second resistance, is connected with the right channel pin and is connected by the 4th resistance with second I/O pin respectively；One end of 6th resistance is connected with the 5th I/O pin, and the other end of the 6th resistance is connected with the detective pin, when the earphone to be detected inserts the socket, the detective pin and the left channel pin short circuit.
- Device as claimed in claim 2, it is characterised in that also include：First electric capacity, the second electricity Appearance, the 3rd electric capacity and the 4th electric capacity, wherein,One end of first electric capacity is connected with first I/O pin and the 3rd resistor respectively, the other end ground connection of first electric capacity；One end of second electric capacity is connected with second I/O pin and the 4th resistance respectively, the other end ground connection of second electric capacity；One end of 3rd electric capacity is connected with the detective pin and the 6th resistance respectively, the other end ground connection of the 3rd electric capacity；One end of 4th electric capacity is connected with the 5th resistance, the second resistance, the 4th resistance and the right channel pin respectively, the other end ground connection of the 4th electric capacity.
- Device as claimed in claim 3, it is characterised in that also include：First voltage-regulator diode, the second voltage-regulator diode, the 3rd voltage-regulator diode and the 4th voltage-regulator diode, wherein,One end of first voltage-regulator diode is connected with the first resistor, 3rd resistor and the left channel pin respectively, the other end ground connection of first voltage-regulator diode；One end of second voltage-regulator diode is connected with the 4th electric capacity, the 5th resistance, the second resistance, the 4th resistance and the right channel pin respectively, the other end ground connection of second voltage-regulator diode；One end of 3rd voltage-regulator diode is connected with the 3rd electric capacity, the 6th resistance and the detective pin respectively, the other end ground connection of the 3rd voltage-regulator diode；One end of 4th voltage-regulator diode is distinguished the 3rd I/O pin and is connected with Mike's pin, the other end ground connection of the 4th voltage-regulator diode.
- Device as claimed in claim 4, it is characterised in that also include：First magnetic bead, the second magnetic bead and the 3rd magnetic bead, wherein,One end of first magnetic bead connects the 3rd voltage-regulator diode, the 3rd electric capacity and is connected with the 6th resistance respectively, and the other end of first magnetic bead is connected with the detective pin；One end of second magnetic bead connects the second resistance, the 4th resistance, the 4th electric capacity and is connected with the 5th resistance respectively, and the other end of second magnetic bead is connected with the right channel pin；One end of 3rd magnetic bead connects the 4th voltage-regulator diode and the 3rd I/O pin respectively, and the other end of the 3rd magnetic bead connects Mike's pin.
- Device as described in claim 1-5 any one, it is characterised in that also include：7th resistance, the 8th resistance and the 5th voltage-regulator diode, wherein,The earphone grounding pin is connected by the 5th voltage-regulator diode with the chip ground pin, 7th resistance is in parallel with the 5th voltage-regulator diode, one end of 8th resistance is connected with the chip ground pin and the 5th voltage-regulator diode respectively, the 8th resistance other end ground connection.
- Device as claimed in any one of claims 1 to 6, it is characterised in that also include：Controlling switch, the processor also includes the 6th I/O pin, and the controlling switch of controlling switch is connected with the 6th I/O pin, and the controlling switch is used for the order of connection for switching the earphone grounding pin and Mike's pin.
- A kind of terminal device, it is characterised in that including the device as described in claim 1-7 any one.
- A kind of headset type recognition methods, it is characterised in that including：When the magnitude of voltage detected in the left channel pin of earphone socket and the right channel pin of the earphone socket is low level, the magnitude of voltage on Mike's pin of the earphone socket is measured；The type of earphone to be detected is recognized according to the magnitude of voltage on Mike's pin of the earphone socket.
- Method as claimed in claim 9, it is characterised in that when the magnitude of voltage in the left channel pin for detecting earphone socket and the right channel pin of the earphone socket is low level, the magnitude of voltage measured on Mike's pin of the earphone socket includes：When the magnitude of voltage detected in the left channel pin of the earphone socket is low level, the magnitude of voltage in the right channel pin of the earphone socket is measured；If the magnitude of voltage in the right channel pin of the earphone socket is low level, the magnitude of voltage on Mike's pin of the earphone socket is measured.
- Method as described in claim 9 or 10, it is characterised in that after the type of the magnitude of voltage identification earphone to be detected on Mike's pin according to the earphone socket, in addition to：If the type of the earphone to be detected is not preset kind, switch the order of connection of Mike's pin of the earphone socket and the earphone grounding pin of the earphone socket.
- A kind of headset type identifying device, it is characterised in that including：Earphone socket, detection module and identification module, wherein,The earphone socket includes left channel pin, right channel pin and Mike's pin；When the magnitude of voltage that the detection module is used to detect in the left channel pin is low level, the magnitude of voltage in the right channel pin is measured,If the magnitude of voltage that the identification module is used in the right channel pin is low level, the magnitude of voltage on Mike's pin is measured.
- Device as claimed in claim 12, it is characterised in that when the magnitude of voltage that the detection module is used to detect in the left channel pin is low level, measure the magnitude of voltage in the right channel pin；If the magnitude of voltage in the right channel pin is low level, the magnitude of voltage on Mike's pin is measured.
- Device as described in claim 12 or 13, it is characterised in that also include：Handover module, if the type for earphone to be detected is not preset kind, switches the order of connection of Mike's pin and the earphone grounding pin.
- A kind of computer program product, characterized in that, the computer program product includes read/write memory medium, the read/write memory medium is used to store computer program code, on a processor, the computer program code includes for the computer program code operation：When for detecting the magnitude of voltage in the left channel pin of earphone socket and the right channel pin of the earphone socket being low level, the magnitude of voltage on Mike's pin of the earphone socket is measured；Magnitude of voltage on Mike's pin according to the earphone socket recognizes the type of earphone to be detected.
- Computer program product as claimed in claim 15, it is characterised in that the computer program code includes：During for detecting the magnitude of voltage in the left channel pin for low level, the magnitude of voltage in the right channel pin is measured；If the magnitude of voltage in the right channel pin is low level, the magnitude of voltage on Mike's pin is measured.
- Computer program product as described in claim 15 or 16, it is characterised in that the calculating Machine program code also includes：If the type for the earphone to be detected is not preset kind, switch the order of connection of Mike's pin and the earphone grounding pin.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2015/073106 WO2016127431A1 (en) | 2015-02-15 | 2015-02-15 | Earphone type identification method, apparatus and terminal device |
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