CN107295140A - A kind of detection method of earphone, device and terminal - Google Patents
A kind of detection method of earphone, device and terminal Download PDFInfo
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- CN107295140A CN107295140A CN201710502436.4A CN201710502436A CN107295140A CN 107295140 A CN107295140 A CN 107295140A CN 201710502436 A CN201710502436 A CN 201710502436A CN 107295140 A CN107295140 A CN 107295140A
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- earphone
- audio
- voltage
- potential
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3051—Monitoring arrangements for monitoring the configuration of the computing system or of the computing system component, e.g. monitoring the presence of processing resources, peripherals, I/O links, software programs
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
Abstract
The invention discloses a kind of detection method of earphone, device and terminal, including：When there is triggering interrupt signal in audio ic Audio IC earphone insertion detection pin HPH_DET, the voltage with the audio ic Audio IC earphone insertion detection pin HPH_DET potential-divider networks being connected is obtained, judges whether current be earphone insertion according to the magnitude of voltage got.The invention also discloses a kind of detection means of earphone and terminal, in such scheme, by detecting the voltage of potential-divider network and then judging whether current be that earphone is inserted, so as to distinguish the short circuit under other abnormal conditions and handled accordingly, avoid ear-phone function false triggering, influence of the reverse irrigated current to earphone tonequality is reduced, the experience of user is improved.
Description
Technical field
The present invention relates to technical field of mobile terminals, more particularly to a kind of detection method of earphone, device and terminal.
Background technology
In the portable electric appts such as smart mobile phone, tablet personal computer, audio-frequency function is an indispensable part.Generally
Audio output be divided into fuselage carry put outside loudspeaker output and earphone output.Fuselage leaves earphone interface.When inserting earphone, system
Earphone access is detected, is then shut off putting outside loudspeaker, audio signal is exported from earphone.
System needs whether real-time test earphone inserts.Fig. 1 is earphone interface schematic diagram in the prior art, as shown in figure 1,
Earphone interface is divided into left channel interface pin HPH_L, ground pin GND, right channel interface pin HPH_R and earphone insertion inspection
Test tube pin HPH_DET, wherein four-section type headset also include Mike and keystroke interface pin HPH_MIC.System is inserted according to earphone
Whether detection pin HPH_DET is low to judge currently whether insert earphone.When inserting earphone, HPH_DET and HPH_L or
HPH_R connections are set to low, and now HPH_DET produces interrupt signal, and Audio IC have been identified as earphone insertion according to this.
But in actual applications, although earphone base and fuselage interior waterproof, but earpiece holes are open state, are easily entered
Water.If earpiece holes are intake, or enter conductive foreign matter in earpiece holes, HPH_DET and ground short circuit are easily caused.Now, move
Dynamic terminal can be erroneously identified as earphone insertion, so as to open headset mode, close audio external play function.So, meeting
To consumer using bringing unnecessary puzzlement.
In addition, as shown in figure 1, because HPH_L is directly connected to HPH_DET, HPH_L is fluctuated generally between-V~+V,
Wherein V is output audio voltage peak value, when HPH_L is negative voltage, HPH_DET showing to HPH_L reverse irrigated currents easily occurs
As so as to influence the acoustical quality of earphone.
How in earpiece holes water inlet or conductive foreign matter, it is to avoid ear-phone function false triggering, and reverse irrigated current is reduced to earphone
The influence of tonequality, so as to be lifted in the experience of user, currently available technology also without related solution.
The content of the invention
It is a primary object of the present invention to propose a kind of detection method of earphone, device and terminal, earpiece holes water inlet or
During conductive foreign matter, it is to avoid ear-phone function false triggering, influence of the reverse irrigated current to earphone tonequality is reduced, so as to improve user
Experience.
To achieve the above object, the embodiments of the invention provide a kind of detection method of earphone, applied to terminal, the end
End includes audio ic Audio IC, including：
There is triggering interrupt signal in the earphone insertion detection pin HPH_DET of the audio ic Audio IC
When, the voltage with the audio ic Audio IC earphone insertion detection pin HPH_DET potential-divider networks being connected is obtained,
Judge whether current be earphone insertion according to the magnitude of voltage got.
Alternatively, the potential-divider network includes：First resistor and second resistance, wherein,
The first end of the first end of the first resistor and the second resistance links together, and the of the first resistor
One end connects the HPH_DET pipes on the input pin of analog-to-digital conversion module, the first end connection earphone interface of the second resistance
Pin, the second end connection system power supply of the first resistor, the second end connection audio ic Audio of the second resistance
IC earphone insertion detection pin HPH_DET；
Wherein, the analog-to-digital conversion module is used for the voltage for obtaining the potential-divider network.
Alternatively, the magnitude of voltage that the basis is got judges whether current be that earphone insertion is specifically included：
The impedance of institute insertion portion is obtained according to the magnitude of voltage, judge the impedance whether with default earphone impedance model
Enclose value to match, if it is, being earphone insertion.
Alternatively, the impedance of institute's insertion portion is obtained as follows：
Wherein, Vb is system voltage, and Vs is the voltage of the potential-divider network got, and R1 is the first electricity in the potential-divider network
The impedance of resistance.
The embodiment of the present invention additionally provides a kind of detection means of earphone, is arranged in terminal, and the terminal includes center
Processor and audio ic Audio IC, including：
Potential-divider network, is set to be connected with audio ic Audio IC earphone insertion detection pin HPH_DET；
Analog-to-digital conversion module, is set to the earphone insertion detection pin HPH_ in the audio ic Audio IC
When triggering interrupt signal occurs in DET, the voltage of potential-divider network is obtained, and the voltage output got is handled to the center
Device；The central processing unit judges whether current be earphone insertion according to the magnitude of voltage got.
Alternatively, the potential-divider network includes：First resistor and second resistance, wherein,
The first end of the first end of the first resistor and the second resistance links together, and the of the first resistor
The earphone that one end is connected on the input pin of the analog-to-digital conversion module, the first end connection earphone interface of the second resistance is inserted
Enter to detect pin HPH_DET, the second end connection system power supply of the first resistor, the second end connection sound of the second resistance
Frequency integrated circuit Audio IC earphone insertion detection pin HPH_DET.
Alternatively, the central processing unit judges whether current be the specific bag of earphone insertion according to the magnitude of voltage got
Include：
The central processing unit obtains the impedance of institute insertion portion according to the magnitude of voltage, judge the impedance whether with advance
If earphone impedance value range match, if it is, for earphone insertion.
Alternatively, the central processing unit obtains the impedance of institute's insertion portion as follows：
Wherein, Vb is system voltage, and Vs is the voltage for the potential-divider network that the analog-to-digital conversion module is got, and R1 is described
The impedance of first resistor in potential-divider network.
The embodiment of the present invention additionally provides a kind of terminal, including processor and computer-readable recording medium, the calculating
Be stored with instruction in machine readable storage medium storing program for executing, when the instruction is by the computing device, realizes method as described above.
The embodiment of the present invention additionally provides a kind of computer-readable recording medium, is stored thereon with computer program, described
Following steps are realized when computer program is executed by processor：
There is triggering interrupt signal in the earphone insertion detection pin HPH_DET of the audio ic Audio IC
When, the voltage with the audio ic Audio IC earphone insertion detection pin HPH_DET potential-divider networks being connected is obtained,
Judge whether current be earphone insertion according to the magnitude of voltage got.
Alternatively, the potential-divider network includes：First resistor and second resistance, wherein,
The first end of the first end of the first resistor and the second resistance links together, and the of the first resistor
One end connects the earphone insertion inspection on the input pin of analog-to-digital conversion module, the first end connection earphone interface of the second resistance
Test tube pin HPH_DET, the second end connection system power supply of the first resistor, the second end connection audio collection of the second resistance
Into circuit Audio IC earphone insertion detection pin HPH_DET；
Wherein, the analog-to-digital conversion module is used for the voltage for obtaining the potential-divider network.
Alternatively, the magnitude of voltage that the basis is got judges whether current be that earphone insertion is specifically included：
The impedance of institute insertion portion is obtained according to the magnitude of voltage, judge the impedance whether with default earphone impedance model
Enclose value to match, if it is, being earphone insertion.
Alternatively, the impedance of institute's insertion portion is obtained as follows：
Wherein, Vb is system voltage, and Vs is the voltage of the potential-divider network got, and R1 is the first electricity in the potential-divider network
The impedance of resistance.
Technical scheme proposed by the present invention includes：In audio ic Audio IC earphone insertion detection pin HPH_
When triggering interrupt signal occurs in DET, obtain and be connected with audio ic Audio IC earphone insertion detection pin HPH_DET
The voltage of the potential-divider network connect, judges whether current be earphone insertion according to the magnitude of voltage got.The present invention passes through detection point
The voltage of pressure network network and then judge whether current be earphone insertion, is gone forward side by side so as to distinguish the short circuit under other abnormal conditions
Row corresponding processing, it is to avoid ear-phone function false triggering, reduces influence of the reverse irrigated current to earphone tonequality, improves user's
Experience.
Brief description of the drawings
Fig. 1 is earphone interface schematic diagram in the prior art；
Fig. 2 is the hardware architecture diagram for realizing each optional mobile terminal of embodiment one of the invention；
Fig. 3 be Fig. 2 of the present invention in mobile terminal wireless communication system schematic diagram；
Fig. 4 realizes the flow chart of the method for headset detection for the present invention；
Fig. 5 realizes earphone false-touch prevention for the present invention, reduces the realization principle block diagram of reverse irrigated current；
Fig. 6 is the theory diagram of potential-divider network of the present invention；
Fig. 7 realizes the composition structural representation of the device of headset detection for the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Describe to realize the mobile terminal of each embodiment of the invention referring now to accompanying drawing.In follow-up description, use
For represent element such as " module ", " part " or " unit " suffix only for be conducive to the present invention explanation, itself
Not specific meaning.Therefore, " module " can be used mixedly with " part ".
Mobile terminal can be implemented in a variety of manners.For example, the terminal described in the present invention can include such as moving
Phone, smart phone, notebook computer, digit broadcasting receiver, PDA (personal digital assistant), PAD (tablet personal computer), PMP
The mobile terminal of (portable media player), guider etc. and such as numeral TV, desktop computer etc. are consolidated
Determine terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that, except being used in particular for movement
Outside the element of purpose, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.
Fig. 2 illustrates for the hardware configuration of realization each optional mobile terminal of embodiment one of the invention.
Mobile terminal 1 00 can include wireless communication unit 110, A/V (audio/video) input block 120, user's input
Unit 130, sensing unit 140, output unit 150, memory 160, interface unit 170, controller 180 and power subsystem 190
Etc..Fig. 2 shows the mobile terminal with various assemblies, it should be understood that being not required for implementing all groups shown
Part.More or less components can alternatively be implemented.The element of mobile terminal will be discussed in more detail below.
Wireless communication unit 110 generally includes one or more assemblies, and it allows mobile terminal 1 00 and wireless communication system
Or the radio communication between network.For example, wireless communication unit can include broadcasting reception module 111, mobile communication module
112nd, at least one in wireless Internet module 113, short range communication module 114 and location information module 115.
Broadcasting reception module 111 receives broadcast singal and/or broadcast via broadcast channel from external broadcast management server
Relevant information.Broadcast channel can include satellite channel and/or terrestrial channel.Broadcast management server can be generated and sent
The broadcast singal and/or broadcast related information generated before the server or reception of broadcast singal and/or broadcast related information
And send it to the server of terminal.Broadcast singal can include TV broadcast singals, radio signals, data broadcasting
Signal etc..Moreover, broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast phase
Closing information can also provide via mobile communications network, and in this case, broadcast related information can be by mobile communication mould
Block 112 is received.Broadcast singal can exist in a variety of manners, for example, it can be with DMB (DMB) electronics
The form of program guide (EPG), the electronic service guidebooks (ESG) of digital video broadcast-handheld (DVB-H) etc. and exist.Broadcast
Receiving module 111 can receive signal broadcast by using various types of broadcast systems.Especially, broadcasting reception module 111
Can be wide by using such as multimedia broadcasting-ground (DMB-T), DMB-satellite (DMB-S), digital video
Broadcast-hand-held (DVB-H), forward link media (MediaFLO@) Radio Data System, received terrestrial digital broadcasting integrated service
Etc. (ISDB-T) digit broadcasting system receives digital broadcasting.Broadcasting reception module 111, which may be constructed such that, to be adapted to provide for extensively
Broadcast the various broadcast systems of signal and above-mentioned digital broadcasting system
System.The broadcast singal and/or broadcast related information received via broadcasting reception module 111 can be stored in memory
In 160 (or other types of storage mediums).
Mobile communication module 112 sends radio signals to base station (for example, access point, node B etc.), exterior terminal
And in server at least one and/or receive from it radio signal.Such radio signal can be logical including voice
Talk about signal, video calling signal or the various types of data for sending and/or receiving according to text and/or Multimedia Message.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.The module can be internally or externally
It is couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by the module can include WLAN (WLAN) (Wi-Fi), Wibro
(WiMAX), Wimax (worldwide interoperability for microwave accesses), HSDPA (high-speed downlink packet access) etc..
Short range communication module 114 is the module for supporting junction service.Some examples of short-range communication technology include indigo plant
ToothTM, radio frequency identification (RFID), Infrared Data Association (IrDA), ultra wide band (UWB), purple honeybeeTMEtc..
Location information module 115 is the module for checking or obtaining the positional information of mobile terminal.Location information module
Typical case be GPS (global positioning system).According to current technology, GPS module 115, which is calculated, comes from three or more satellites
Range information and correct time information and for the Information application triangulation of calculating so that according to longitude, latitude
Highly accurately calculate three-dimensional current location information.Currently, defended for calculating the method for position and temporal information using three
Star and the position calculated by using other satellite correction and the error of temporal information.In addition, GPS module 115
Can be by Continuous plus current location information in real time come calculating speed information.
A/V input blocks 120 are used to receive audio or video signal.A/V input blocks 120 can include the He of camera 121
Microphone 122, the static images that 121 pairs of camera is obtained in video acquisition mode or image capture mode by image capture apparatus
Or the view data of video is handled.Picture frame after processing may be displayed on display unit 151.Handled through camera 121
Picture frame afterwards can be stored in memory 160 (or other storage mediums) or be sent out via wireless communication unit 110
Send, two or more cameras 1210 can be provided according to the construction of mobile terminal.Microphone 122 can telephone calling model,
Sound (voice data) is received via microphone in logging mode, speech recognition mode etc. operational mode, and can be by this
The acoustic processing of sample is voice data.Audio (voice) data after processing can be converted in the case of telephone calling model
The form output of mobile communication base station can be sent to via mobile communication module 112.Microphone 122 can be implemented various types of
Noise eliminate (or suppress) algorithm with eliminate noise that (or suppression) produce during receiving and sending audio signal or
Interference.
The order that user input unit 130 can be inputted according to user generates key input data to control each of mobile terminal
Plant operation.User input unit 130 allows user to input various types of information, and can include keyboard, metal dome, touch
Plate (for example, detection due to being touched caused by resistance, pressure, electric capacity etc. change sensitive component), roller, rocking bar etc.
Deng.Especially, when touch pad is superimposed upon on display unit 151 in the form of layer, touch-screen can be formed.
Sensing unit 140 detects the current state of mobile terminal 1 00, (for example, mobile terminal 1 00 opens or closes shape
State), the position of mobile terminal 1 00, user is for the presence or absence of contact (that is, touch input) of mobile terminal 1 00, mobile terminal
The acceleration or deceleration movement of 100 orientation, mobile terminal 1 00 and direction etc., and generate for controlling mobile terminal 1 00
The order of operation or signal.For example, when mobile terminal 1 00 is embodied as sliding-type mobile phone, sensing unit 140 can be sensed
The sliding-type phone is opening or closing.In addition, sensing unit 140 can detect power subsystem 190 whether provide electric power or
Whether person's interface unit 170 couples with external device (ED).Sensing unit 140, which can include proximity transducer 1410, to be combined below
This is described touch-screen.
Interface unit 170 is connected the interface that can pass through as at least one external device (ED) with mobile terminal 1 00.For example,
External device (ED) can include wired or wireless head-band earphone port, external power source (or battery charger) port, wired or nothing
Line FPDP, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Identification module can be that storage is used to verify that user uses each of mobile terminal 1 00
Plant information and subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) can be included
Etc..In addition, the device (hereinafter referred to as " identifying device ") with identification module can take the form of smart card, therefore, know
Other device can be connected via port or other attachment means with mobile terminal 1 00.Interface unit 170 can be used for reception and come from
The input (for example, data message, electric power etc.) of external device (ED) and the input received is transferred in mobile terminal 1 00
One or more elements can be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 1 00 is connected with external base, interface unit 170 may be used as allowing by it by electricity
Power provides to the path of mobile terminal 1 00 from base or may be used as allowing passing through it from the various command signals that base is inputted
It is transferred to the path of mobile terminal.The various command signals or electric power inputted from base may be used as being used to recognize that mobile terminal is
The no signal being accurately fitted within base.Output unit 150 is configured to provide defeated with vision, audio and/or tactile manner
Go out signal (for example, audio signal, vision signal, alarm signal, vibration signal etc.).Output unit 150 can include display
Unit 151, dio Output Modules 152, alarm unit 153 etc..
Display unit 151 may be displayed on the information handled in mobile terminal 1 00.For example, when mobile terminal 1 00 is in electricity
When talking about call mode, display unit 151 can be shown with conversing or other communicating (for example, text messaging, multimedia file
Download etc.) related user interface (UI) or graphic user interface (GUI).When mobile terminal 1 00 is in video calling pattern
Or during image capture mode, display unit 151 can show the image of capture and/or the image of reception, show video or figure
UI or GUI of picture and correlation function etc..
Meanwhile, when display unit 151 and touch pad in the form of layer it is superposed on one another to form touch-screen when, display unit
151 may be used as input unit and output device.Display unit 151 can include liquid crystal display (LCD), thin film transistor (TFT)
In LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc. at least
It is a kind of.Some in these displays may be constructed such that transparence to allow user to be watched from outside, and this is properly termed as transparent
Display, typical transparent display can be, for example, TOLED (transparent organic light emitting diode) display etc..According to specific
Desired embodiment, mobile terminal 1 00 can include two or more display units (or other display devices), for example, moving
Dynamic terminal can include outernal display unit (not shown) and inner display unit (not shown).Touch-screen can be used for detection to touch
Input pressure and touch input position and touch input area.
Dio Output Modules 152 can mobile terminal be in call signal reception pattern, call mode, logging mode,
It is that wireless communication unit 110 is received or in memory 160 when under the isotypes such as speech recognition mode, broadcast reception mode
The voice data transducing audio signal of middle storage and it is output as sound.Moreover, dio Output Modules 152 can be provided and movement
The audio output (for example, call signal receives sound, message sink sound etc.) for the specific function correlation that terminal 100 is performed.
Dio Output Modules 152 can include loudspeaker, buzzer etc..
Alarm unit 153 can provide output to notify event to mobile terminal 1 00.Typical event can be with
Including calling reception, message sink, key signals input, touch input etc..In addition to audio or video is exported, alarm unit
153 can provide output in a different manner with the generation of notification event.For example, alarm unit 153 can be in the form of vibration
Output is provided, when receiving calling, message or some other entrance communications (incoming communication), alarm list
Member 153 can provide tactile output (that is, vibrating) to notify to user.Exported by providing such tactile, even in
When the mobile phone of user is in the pocket of user, user also can recognize that the generation of various events.Alarm unit 153
The output of the generation of notification event can be provided via display unit 151 or dio Output Modules 152.
Memory 160 can store software program of the processing performed by controller 180 and control operation etc., Huo Zheke
Temporarily to store oneself data (for example, telephone directory, message, still image, video etc.) through exporting or will export.And
And, memory 160 can store the vibration of various modes on being exported when touching and being applied to touch-screen and audio signal
Data.
Memory 160 can include the storage medium of at least one type, and the storage medium includes flash memory, hard disk, many
Media card, card-type memory (for example, SD or DX memories etc.), random access storage device (RAM), static random-access storage
Device (SRAM), read-only storage (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory
(PROM), magnetic storage, disk, CD etc..Moreover, mobile terminal 1 00 can be with performing memory by network connection
The network storage device cooperation of 160 store function.
The overall operation of the generally control mobile terminal of controller 180.For example, controller 180 is performed and voice call, data
Communication, video calling etc. related control and processing.In addition, controller 180 can include being used to reproduce (or playback) many matchmakers
The multi-media module 1810 of volume data, multi-media module 1810 can be constructed in controller 180, or can be structured as and control
Device 180 processed is separated.Controller 180 can be with execution pattern identifying processing, by the handwriting input performed on the touchscreen or figure
Piece draws input and is identified as character or image.
Power subsystem 190 receives external power or internal power under the control of controller 180 and provides operation each member
Appropriate electric power needed for part and component.
Various embodiments described herein can be with use such as computer software, hardware or its any combination of calculating
Machine computer-readable recording medium is implemented.Implement for hardware, embodiment described herein can be by using application-specific IC
(ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), scene can
Programming gate array (FPGA), processor, controller, microcontroller, microprocessor, it is designed to perform function described herein
At least one of electronic unit is implemented, and in some cases, such embodiment can be implemented in controller 180.
For software implementation, the embodiment of such as process or function can be with allowing to perform the single of at least one function or operation
Software module is implemented.Software code can by the software application (or program) write with any appropriate programming language Lai
Implement, software code can be stored in memory 160 and be performed by controller 180.
So far, oneself according to its function through describing mobile terminal.Below, for the sake of brevity, will description such as folded form,
Slide type mobile terminal in various types of mobile terminals of board-type, oscillating-type, slide type mobile terminal etc. is as showing
Example.Therefore, the present invention can be applied to any kind of mobile terminal, and be not limited to slide type mobile terminal.
Mobile terminal 1 00 as shown in Figure 2 may be constructed such that using via frame or packet transmission data it is all if any
Line and wireless communication system and satellite-based communication system are operated.
The communication system for describing wherein be operated according to the mobile terminal of the present invention referring now to Fig. 3.
Such communication system can use different air interfaces and/or physical layer.For example, used by communication system
Air interface includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and universal mobile communications system
System (UMTS) (especially, Long Term Evolution (LTE)), global system for mobile communications (GSM) etc..As non-limiting example, under
The description in face is related to cdma communication system, but such teaching is equally applicable to other types of system.
With reference to Fig. 3, cdma wireless communication system can include multiple mobile terminal 1s 00, multiple base stations (BS) 270, base station
Controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is configured to and Public Switched Telephony Network (PSTN)
290 form interface.MSC280 is also structured to the BSC275 formation interfaces with that can be couple to base station 270 via back haul link.
If any of interface that back haul link can be known according to Ganji is constructed, the interface includes such as E1/T1, ATM, IP,
PPP, frame relay, HDSL, ADSL or xDSL.It will be appreciated that system can include multiple BSC2750 as shown in Figure 3.
Each BS270 can service one or more subregions (or region), by multidirectional antenna or the day of sensing specific direction
Each subregion of line covering is radially away from BS270.Or, each subregion can be by two or more for diversity reception
Antenna is covered.Each BS270 may be constructed such that the multiple frequency distribution of support, and each frequency distribution has specific frequency spectrum
(for example, 1.25MHz, 5MHz etc.).
What subregion and frequency were distributed, which intersects, can be referred to as CDMA Channel.BS270 can also be referred to as base station transceiver
System (BTS) or other equivalent terms.In this case, term " base station " can be used for broadly representing single
BSC275 and at least one BS270.Base station can also be referred to as " cellular station ".Or, specific BS270 each subregion can be claimed
For multiple cellular stations.
With reference to Fig. 3, cdma wireless communication system can include multiple mobile terminal 1s 00, multiple base stations (BS) 270, base station
Controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is configured to and Public Switched Telephony Network (PSTN)
290 form interface.MSC280 is also structured to the BSC275 formation interfaces with that can be couple to base station 270 via back haul link.
If any of interface that back haul link can be known according to Ganji is constructed, the interface includes such as E1/T1, ATM, IP,
PPP, frame relay, HDSL, ADSL or xDSL.It will be appreciated that system can include multiple BSC2750 as shown in Figure 3.
Each BS270 can service one or more subregions (or region), by multidirectional antenna or the day of sensing specific direction
Each subregion of line covering is radially away from BS270.Or, each subregion can be by two or more for diversity reception
Antenna is covered.Each BS270 may be constructed such that the multiple frequency distribution of support, and each frequency distribution has specific frequency spectrum
(for example, 1.25MHz, 5MHz etc.).
What subregion and frequency were distributed, which intersects, can be referred to as CDMA Channel.BS270 can also be referred to as base station transceiver
System (BTS) or other equivalent terms.In this case, term " base station " can be used for broadly representing single
BSC275 and at least one BS270.Base station can also be referred to as " cellular station ".Or, specific BS270 each subregion can be claimed
For multiple cellular stations.
As shown in Figure 3, broadcast singal is sent to the mobile terminal operated in system by broadcsting transmitter (BT) 295
100.Broadcasting reception module 111 as shown in Figure 3 is arranged at mobile terminal 1 00 to receive the broadcast sent by BT295
Signal.In fig. 3 it is shown that several global positioning system (GPS) satellites 300.Satellite 300 helps to position multiple mobile terminals
At least one in 100.
In figure 3, multiple satellites 300 are depicted, it is understood that be, it is possible to use any number of satellite obtains useful
Location information.GPS module 115 as shown in Figure 3 is generally configured to coordinate with satellite 300 to obtain desired positioning letter
Breath.GPS tracking techniques or outside GPS tracking techniques are substituted, the other of the position that can track mobile terminal can be used
Technology.In addition, at least one gps satellite 300 can optionally or additionally handle satellite dmb transmission.
As a typical operation of wireless communication system, BS270 receives the reverse link from various mobile terminal 1s 00
Signal.Mobile terminal 1 00 generally participates in call, information receiving and transmitting and other types of communication.It is each anti-that certain base station 270 is received
Handled to link signal in specific BS270.The data of acquisition are forwarded to the BSC275 of correlation.BSC provides call
Resource allocation and the mobile management function of coordination including the soft switching process between BS270.BSC275 is also by the number received
According to MSC280 is routed to, it is provided for the extra route service with PSTN290 formation interfaces.Similarly, PSTN290 with
MSC280 formation interfaces, MSC and BSC275 formation interface, and BSC275 correspondingly control BS270 with by forward link signals
It is sent to mobile terminal 1 00.
Based on above-mentioned mobile terminal hardware configuration and communication system, each embodiment of the inventive method is proposed.
According to one embodiment of present invention there is provided a kind of detection method of earphone, this method is applied to terminal, described
Terminal includes audio ic Audio IC, Fig. 4 to realize the stream of the method for headset detection in one embodiment of the present of invention
Cheng Tu, as shown in figure 4, comprising the following steps：
Step 401：In there is triggering in the earphone insertion detection pin HPH_DET of the audio ic Audio IC
During break signal, the potential-divider network being connected with audio ic Audio IC earphone insertion detection pin HPH_DET is obtained
Voltage；
Fig. 5 realizes earphone false-touch prevention for the present invention, reduces the realization principle block diagram of reverse irrigated current.As shown in figure 5, in audio
Integrated circuit Audio IC earphone insertion detection pin HPH_DET increase potential-divider networks, are then examined using analog-to-digital conversion module
Survey the voltage of potential-divider network.
Fig. 6 is the theory diagram of potential-divider network of the present invention.As shown in fig. 6, the potential-divider network includes：First resistor and second
Resistance, wherein, the first end of the first end of the first resistor and the second resistance links together, the first resistor
First end connects the earphone on the input pin of the analog-to-digital conversion module, the first end connection earphone interface of the second resistance
Insertion detection pin HPH_DET, the second end connection system power supply of the first resistor, the second end connection of the second resistance
Audio ic Audio IC earphone insertion detection pin HPH_DET.HPH_DET is to HPH_ during in order to reduce insertion earphone
L reverse irrigated current, the value of second resistance is generally large, generally in more than 10k Ω.Meanwhile, arrived to reduce system power supply
HPH_L electric current, the value of first resistor is general also larger, also in more than 10k Ω.
It should be noted that occurring in the earphone insertion detection pin HPH_DET of the audio ic Audio IC
When low level or trailing edge triggering interrupt signal, the analog-to-digital conversion module detects the partial pressure under the control of central processing unit
The voltage of network node.
Step 402：Judge whether current be earphone insertion according to the magnitude of voltage got.
Wherein, if it is determined that earphone is inserted, then it can control to open headset mode；If it is determined that be not earphone insertion,
Then system prompts user cleans earpiece holes.
Specifically, there is low level in the earphone insertion detection pin HPH_DET of the audio ic Audio IC
Or during trailing edge triggering interrupt signal, the magnitude of voltage that can be got by the central processing unit according to analog-to-digital conversion module obtains institute
The impedance of insertion portion, judges whether the impedance matches with default earphone impedance value range, if it is, being inserted for earphone
Enter.That is, the present invention is by detecting the voltage of potential-divider network, and then obtain the resistance of institute's insertion portion, by impedance come
It is the short circuit under earphone or other abnormal conditions to judge institute's insertion portion.
The central processing unit obtains the impedance of institute's insertion portion as follows, it is assumed that Vb is system voltage, and Vs is institute
The voltage for the potential-divider network node that analog-to-digital conversion module is got is stated, R1 is the impedance of first resistor in the potential-divider network, then
The impedance of institute's insertion portion is：
After the size for obtaining r, judge whether r matches with default earphone impedance value range, if it is not, then being judged as
It is abnormal.At this point it is possible to point out user to clear up earpiece holes by system UI.Here, the impedance magnitude of general terminal earphone is
16 ohm or 32 ohm, it is contemplated that according to the impedance of the insertion portion obtained by the magnitude of voltage of the potential-divider network got and earphone
Impedance between there is certain error, therefore when determining whether earphone insertion, what is compared with r is to need institute according to system
The earphone impedance value range pre-set, such as：The earphone impedance value range can be [16-0.8,16+0.8], as long as r is in
Within the scope of being somebody's turn to do, just explanation institute insertion portion is earphone.
It should be noted that analog-to-digital conversion module can be integrated in integrated peripheral hardware in central processing unit or
Additional independent modulus conversion chip.
According to another embodiment of the present invention there is provided a kind of detection means of earphone, Fig. 7 is that the present invention realizes that earphone is examined
The composition structural representation of the device of survey, as shown in fig. 7, the device is arranged in terminal, the terminal includes central processing unit
With audio ic Audio IC, including：Potential-divider network, analog-to-digital conversion module, wherein,
Potential-divider network, is set to be connected with audio ic Audio IC earphone insertion detection pin HPH_DET；
Analog-to-digital conversion module, is set to the earphone insertion detection pin HPH_ in the audio ic Audio IC
When triggering interrupt signal occurs in DET, the voltage of potential-divider network is obtained, and the voltage output got is handled to the center
Device, the central processing unit judges whether current be that earphone is inserted according to the magnitude of voltage got；
Wherein, the potential-divider network includes：First resistor R1 and second resistance R2, wherein,
The first end of the first resistor R1 and the first end of the second resistance R2 link together, the first resistor
R1 first end is connected on the input pin of the analog-to-digital conversion module, the first end connection earphone interface of the second resistance R2
Earphone insertion detection pin HPH_DET, the first resistor R1 the second end connection system power supply, the second resistance R2's
Second end connection audio ic Audio IC earphone insertion detection pin HPH_DET.
Wherein, the central processing unit judges whether current be that earphone insertion is specifically included according to the magnitude of voltage got：
The central processing unit obtains the impedance of institute insertion portion according to the magnitude of voltage, judge the impedance whether with advance
If earphone impedance value range match, if it is, for earphone insertion.
Specifically, the central processing unit obtains the impedance of institute's insertion portion as follows：
Wherein, Vb is system voltage, and Vs is the voltage for the potential-divider network that the analog-to-digital conversion module is got, and R1 is described
The impedance of first resistor in potential-divider network.
According to still another embodiment of the invention there is provided a kind of terminal, including processor and computer-readable recording medium,
Be stored with instruction in the computer-readable recording medium, when the instruction is by the computing device, realizes preceding method
The step of.
According to still another embodiment of the invention there is provided a kind of computer-readable recording medium, computer is stored thereon with
Program, it is characterised in that the computer program realizes following steps when being executed by processor：
When triggering interrupt signal occurs in audio ic Audio IC earphone insertion detection pin HPH_DET, obtain
The voltage with the audio ic Audio IC earphone insertion detection pin HPH_DET potential-divider networks being connected is taken, according to
The magnitude of voltage got judges whether current be earphone insertion；
Wherein, the potential-divider network includes：First resistor and second resistance, wherein,
The first end of the first end of the first resistor and the second resistance links together, and the of the first resistor
One end connects the HPH_DET pipes on the input pin of analog-to-digital conversion module, the first end connection earphone interface of the second resistance
Pin, the second end connection system power supply of the first resistor, the second end connection audio ic Audio of the second resistance
IC earphone insertion detection pin HPH_DET；
Wherein, the analog-to-digital conversion module is used for the voltage for obtaining the potential-divider network.
Specifically, the magnitude of voltage that the basis is got judges whether current be that earphone insertion is specifically included：
The impedance of institute insertion portion is obtained according to the magnitude of voltage, judge the impedance whether with default earphone impedance model
Enclose value to match, if it is, being earphone insertion.
Wherein, the impedance of institute's insertion portion is obtained as follows：
Wherein, Vb is system voltage, and Vs is the voltage of the potential-divider network got, and R1 is the first electricity in the potential-divider network
The impedance of resistance.
This point it is emphasized that, in the present invention, by detecting the voltage of potential-divider network and then judging whether current be that earphone is inserted
Enter, so as to distinguish the short circuit under other abnormal conditions and handled accordingly, it is to avoid ear-phone function false triggering, drop
Low influence of the reverse irrigated current to earphone tonequality, improves the experience of user.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property is included, so that process, method, article or device including a series of key elements not only include those key elements, and
And also including other key elements being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Also there is other identical element in process, method, article or the device of key element.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Understood based on such, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are to cause a station terminal (can be mobile phone, computer, service
Device, air conditioner, or network equipment etc.) perform method described in each of the invention embodiment.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (13)
1. a kind of detection method of earphone, applied to terminal, the terminal includes audio ic Audio IC, and its feature exists
In, including：
When triggering interrupt signal occurs in the earphone insertion detection pin HPH_DET of the audio ic Audio IC, obtain
The voltage with the audio ic Audio IC earphone insertion detection pin HPH_DET potential-divider networks being connected is taken, according to
The magnitude of voltage got judges whether current be earphone insertion.
2. according to the method described in claim 1, it is characterised in that the potential-divider network includes：First resistor and second resistance,
Wherein,
The first end of the first end of the first resistor and the second resistance links together, the first end of the first resistor
Connect the HPH_DET pins on the input pin of analog-to-digital conversion module, the first end connection earphone interface of the second resistance, institute
The second end connection system power supply of first resistor is stated, the second end connection audio ic Audio IC's of the second resistance
Earphone insertion detection pin HPH_DET；
Wherein, the analog-to-digital conversion module is used for the voltage for obtaining the potential-divider network.
3. method according to claim 2, it is characterised in that the magnitude of voltage that the basis is got judges whether be currently
Earphone insertion is specifically included：
The impedance of institute insertion portion is obtained according to the magnitude of voltage, judge the impedance whether with default earphone impedance value range
Match, if it is, being earphone insertion.
4. method according to claim 3, it is characterised in that obtain the impedance of institute's insertion portion as follows：
<mrow>
<mi>r</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>V</mi>
<mi>s</mi>
<mo>&CenterDot;</mo>
<mi>R</mi>
<mn>1</mn>
</mrow>
<mrow>
<mi>V</mi>
<mi>b</mi>
<mo>-</mo>
<mi>V</mi>
<mi>s</mi>
</mrow>
</mfrac>
<mo>;</mo>
</mrow>
Wherein, Vb is system voltage, and Vs is the voltage of the potential-divider network got, and R1 is first resistor in the potential-divider network
Impedance.
5. a kind of detection means of earphone, is arranged in terminal, the terminal includes central processing unit and audio ic
Audio IC, it is characterised in that including：
Potential-divider network, is set to be connected with audio ic Audio IC earphone insertion detection pin HPH_DET；
Analog-to-digital conversion module, is set to go out in the earphone insertion detection pin HPH_DET of the audio ic Audio IC
When now triggering interrupt signal, the voltage of potential-divider network is obtained, and the central processing unit is given by the voltage output got；It is described
Central processing unit judges whether current be earphone insertion according to the magnitude of voltage got.
6. device according to claim 5, it is characterised in that the potential-divider network includes：First resistor and second resistance,
Wherein,
The first end of the first end of the first resistor and the second resistance links together, the first end of the first resistor
Connect the earphone insertion inspection on the input pin of the analog-to-digital conversion module, the first end connection earphone interface of the second resistance
Test tube pin HPH_DET, the second end connection system power supply of the first resistor, the second end connection audio collection of the second resistance
Into circuit Audio IC earphone insertion detection pin HPH_DET.
7. device according to claim 6, it is characterised in that the central processing unit judges according to the magnitude of voltage got
Whether current be that earphone insertion is specifically included：
The central processing unit obtains the impedance of institute insertion portion according to the magnitude of voltage, judge the impedance whether with it is default
Earphone impedance value range matches, if it is, being earphone insertion.
8. device according to claim 7, it is characterised in that the central processing unit obtains institute insertion section as follows
The impedance divided：
<mrow>
<mi>r</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>V</mi>
<mi>s</mi>
<mo>&CenterDot;</mo>
<mi>R</mi>
<mn>1</mn>
</mrow>
<mrow>
<mi>V</mi>
<mi>b</mi>
<mo>-</mo>
<mi>V</mi>
<mi>s</mi>
</mrow>
</mfrac>
<mo>;</mo>
</mrow>
Wherein, Vb is system voltage, and Vs is the voltage for the potential-divider network that the analog-to-digital conversion module is got, and R1 is the partial pressure
The impedance of first resistor in network.
9. it is stored with a kind of terminal, including processor and computer-readable recording medium, the computer-readable recording medium
Instruction, it is characterised in that when the instruction is by the computing device, realize the method as described in claim 1.
10. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the computer program
Following steps are realized when being executed by processor：
When triggering interrupt signal occurs in the earphone insertion detection pin HPH_DET of the audio ic Audio IC, obtain
The voltage with the audio ic Audio IC earphone insertion detection pin HPH_DET potential-divider networks being connected is taken, according to
The magnitude of voltage got judges whether current be earphone insertion.
11. computer-readable recording medium according to claim 10, it is characterised in that the potential-divider network includes：The
One resistance and second resistance, wherein,
The first end of the first end of the first resistor and the second resistance links together, the first end of the first resistor
Connect the earphone insertion detection pipe on the input pin of analog-to-digital conversion module, the first end connection earphone interface of the second resistance
Pin HPH_DET, the second end connection system power supply of the first resistor, the second end connection integrated electricity of audio of the second resistance
Road Audio IC earphone insertion detection pin HPH_DET；
Wherein, the analog-to-digital conversion module is used for the voltage for obtaining the potential-divider network.
12. computer-readable recording medium according to claim 11, it is characterised in that the voltage that the basis is got
Value judges whether current be that earphone insertion is specifically included：
The impedance of institute insertion portion is obtained according to the magnitude of voltage, judge the impedance whether with default earphone impedance value range
Match, if it is, being earphone insertion.
13. computer-readable recording medium according to claim 12, it is characterised in that obtain inserted as follows
Partial impedance：
<mrow>
<mi>r</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>V</mi>
<mi>s</mi>
<mo>&CenterDot;</mo>
<mi>R</mi>
<mn>1</mn>
</mrow>
<mrow>
<mi>V</mi>
<mi>b</mi>
<mo>-</mo>
<mi>V</mi>
<mi>s</mi>
</mrow>
</mfrac>
<mo>;</mo>
</mrow>
Wherein, Vb is system voltage, and Vs is the voltage of the potential-divider network got, and R1 is first resistor in the potential-divider network
Impedance.
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| CN201710502436.4A CN107295140A (en) | 2017-06-27 | 2017-06-27 | A kind of detection method of earphone, device and terminal |
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| CN112689232A (en) * | 2020-12-22 | 2021-04-20 | 南京紫牛软件科技有限公司 | Method and device for determining working state of earphone |
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