CN103702249B - A kind of headphone interface device and the control method based on the headphone interface device - Google Patents
A kind of headphone interface device and the control method based on the headphone interface device Download PDFInfo
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- CN103702249B CN103702249B CN201210368281.7A CN201210368281A CN103702249B CN 103702249 B CN103702249 B CN 103702249B CN 201210368281 A CN201210368281 A CN 201210368281A CN 103702249 B CN103702249 B CN 103702249B
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Abstract
A kind of headphone interface device and its control method, in particular to portable device technologies field, headphone interface device includes: earphone interface module, for obtaining signal when connecting with main equipment；Power supply signal separation module, the signal for will acquire are separated, and power voltage supply signal and digital signal are obtained；The Logic control module, including MCU microcontroller control external equipment for the digital signal obtained from modem is resolved to instruction control signal.Main equipment is connected by earphone interface module with external equipment, and transmit a signal to earphone interface module, the signal received is input to power supply signal separation module by earphone interface, power supply signal separation module converts the signal into as electric signal and digital signal, wherein electric signal provides each device power source by transformation, digital signal is sent to Logic control module, and digital signal parsing is asked that instruction controls external equipment by Logic control module.
Description
Technical field
It is connect the present invention relates to portable device technologies field more particularly to a kind of headphone interface device and based on the earphone
The control method of mouth device.
Background technique
Currently, requirement of the user to following portable device is just intended to enjoy more functions, including game, sound
Frequently, video, closer, it is desirable to portable device can connect more peripheral hardwares etc. realize other function, and it is desirable that these
Function can integrate.
But due to portable device volume and portability problem, so that the interface quantity and type of portable device have
Limit.And portable device connection external equipment mode it is general there are two types of:
One is by wireless form, such as wifi, bluetooth, infrared ray, but in the link block of wireless mode all
Several different Voltage rails are needed, in addition to certain form of battery, these modules may be there are also multiple input powers.These voltages
The circuit structure of rail is more complicated, generally requires including main system bus, microprocessor or DSP core voltage and radio frequency electrical
So that entire circuit control becomes complicated, the battery life of further portable device shortens in source.
The second is such as USB interface etc. makees portable device when using USB as interface by wired form
For host, but circuit is added on basic USB peripheral in the circuit design of external equipment, to increase the electricity of external devices
Road complexity, and since the usb compliant of each manufacturer is different, cause different portable devices to need special
Usb line.
Summary of the invention
In order to solve the problems, such as that portable device is attached external equipment, it is existing that the present invention proposes that one kind can be multiplexed
The scheme of the connection external equipment of interface, that is, provide a kind of headphone interface device and the controlling party based on the headphone interface device
Method.
In order to realize the above goal of the invention, a kind of headphone interface device provided in an embodiment of the present invention is by skill below
What art scheme was realized:
A kind of headphone interface device, the headphone interface device include:
Earphone interface module, for obtaining signal when connecting with main equipment；
Power supply signal separation module, the signal for will acquire are separated, and power voltage supply signal and digital signal are obtained；
Logic control module, including MCU microcontroller, for the digital signal obtained from modem is resolved to finger
Control signal is enabled, external equipment is controlled.
Further, the earphone interface module specifically includes:
The headphone interface device includes: earphone sound channel line Line, earphone Mic line, interface of the ground wire, is set by Line from master
It is standby to receive signal, signal is sent by Mic.
Further, the power supply signal separation module specifically includes:
AC-DC converter carries out rectifying and voltage-stabilizing filtering for the signal for the AC frequency conversion for receiving earphone interface module
DC signal is obtained, and is exported to DC-DC converter；
DC-DC converter, for the DC signal of input is converted into voltage signal, and export to bandpass filter,
Modem, MCU and external equipment power supply；
The signal of bandpass filter, the AC frequency conversion for receiving earphone interface module separates, and obtains carrier wave
Signal, output to modem；
Modem, for the carrier signal of simulation is converted to digital signal, output to Logic control module.
Further, the headphone interface device and external equipment are integrated in the same system, pass through the channel SPI or I2C
It is communicated；Or the headphone interface device and external equipment are independently, are communicated by serial line interface.
In order to realize aforementioned invention purpose, the embodiment of the invention also provides a kind of controlling parties based on headphone interface device
Method, what the method was achieved through the following technical solutions:
A kind of control method based on headphone interface device, which comprises
It shakes hands connection: by headphone interface device, establishing the connection of main equipment and external equipment, and when being connect with main equipment
When obtain signal, and isolate power supply signal, and connect back to and should connect confirmation signal with receiving；
Control interaction: external equipment waits follow-up signal and isolates instruction control signal, is controlled and is believed by described instruction
Number, data interaction is carried out by the headphone interface device and main equipment.
Further, the connection of shaking hands includes:
Power supply conversion: by AC-DC, DC-DC is converted to can be used for passing the audio signal that headphone interface device is obtained
The power supply signal of sensor；
It is initial to respond: a back-signalling is exported to the port Mic by headphone interface device；
Main equipment Mic monitors the back-signalling: after main equipment detects that earpiece holes are inserted into equipment, carrying out power audio
Output, while the back-signalling is monitored by Mic；If main equipment can receive the back-signalling of external equipment sending,
Main equipment exports a connection confirmation signal by Line；
The sound channel line Line of headphone interface device monitors response: after external equipment exports initial back-signalling by Mic
Enter Line listening mode, if receiving the connection confirmation signal of main equipment in the given time, and continues to monitor Line, etc.
Instruction to be controlled.
Further, the control interaction includes:
Send instruction: main equipment sends instruction control signal, is sent to external equipment by earphone sound channel line Line, and supervise
Earphone Mic line is listened, external device data passback is waited；
Receive instruction: headphone interface device begins listening for earphone sound channel line Line upon establishment of a connection, and after receiving signal,
Signal separator is carried out, control signal is obtained, is sent to external equipment；
Process instruction: after external equipment obtains instruction control signal, corresponding operation is executed；
Send result: external equipment executes the result data after described instruction control signal, is sent out by headphone interface device
It send to modem, is modulated into earphone Mic line signal, exported from earphone Mic line to main equipment end；
Reception result: it after main equipment end reads signal by earphone Mic line, resolves to digital signal and is handled.This
Inventive embodiments extend earphone by above-mentioned headphone interface device and the method controlled by the headphone interface device
The application function of interface can carry out data transmission transmitting with control command, realize the multiplexing of earphone interface, meanwhile,
The headphone interface device can connect multiple external equipments, improve the energy that the main equipment with earphone interface connects a variety of peripheral hardwares
Power, to improve a variety of application functions for user.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description --- -- to be briefly described, hence it is evident that, it is disclosed below in attached drawing be the present invention
Some prior arts, for member of ordinary skill in the art's work, under the premise of not paying any creative work,
It can also be obtained according to these attached drawings other accompanying drawings.
Fig. 1 is headphone interface device of embodiment of the present invention structure chart；
Fig. 2 is headphone interface device of embodiment of the present invention schematic illustration；
Fig. 3 is main equipment of embodiment of the present invention signal processing flow figure；
Fig. 4 is the signal processing flow figure of external equipment of the embodiment of the present invention.
Specific embodiment
In order to make the purpose of the embodiment of the present invention, technical solution and advantage are clearer, will implement through the invention below
Attached drawing in example, technical solution in the embodiment of the present invention progress clearly, completely describe, it is clear that described embodiment
It is a part of the embodiment of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without making creative work, belongs to guarantor of the invention
Protect range.
As shown in Figure 1, being a kind of headphone interface device of the embodiment of the present invention, the headphone interface device includes:
Earphone interface module, for obtaining signal when connecting with main equipment；
The headphone interface device includes: earphone sound channel line Line, earphone Mic line, interface of the ground wire；Headphone interface device exists
During carrying out signal transmission with main equipment, main equipment sends signal by Line, receives signal by Mic；Earphone interface
Device receives signal by Line, sends signal by Mic.It is reversed invalid.
Power supply signal separation module, the signal for will acquire are separated, and power voltage supply signal and digital signal are obtained；
As shown in Fig. 2, further, the power supply separation module specifically includes:
AC-DC converter carries out rectifying and voltage-stabilizing filtering for the signal for the AC frequency conversion for receiving earphone interface module
DC signal is obtained, and is exported to DC-DC converter；
DC-DC converter, for the DC signal of input is converted into voltage signal, and export to bandpass filter,
Modem, MCU and external equipment power supply；
The signal of bandpass filter, the AC frequency conversion for receiving earphone interface module separates, and obtains carrier wave
Signal, output to modem；
Modem, for the carrier signal of simulation is converted to digital signal, output to Logic control module.
The Logic control module, including MCU microcontroller, for the digital signal parsing that will be obtained from modem
Signal is controlled for instruction, external equipment is controlled.Under specific performance, if the external equipment is sensor device
Sensor, then the MCU controls sensor by i2c, completes a series of function；Meanwhile it is also anti-by what is obtained from sensor
Respective protocol packing is crossed in feedthrough, is modulated by modulation /demodulation module and is exported by Mic.Sensor is abstract set of sensors,
It can be temperature sensor, humidity sensor, geomagnetic sensor or infrared sensor.
In order to realize goal of the invention of the invention, the embodiment of the invention also provides a kind of controls based on headphone interface device
Method processed, which comprises
It mainly include following process when the external equipment and main equipment interact, that is, connection of shaking hands, control are handed over
Mutually, it disconnects.
Connection of shaking hands includes: power supply conversion, and MCU is initially responded, and main equipment Mic monitors initial response, external equipment Line
Connection confirmation is monitored, in conjunction with Fig. 3 and Fig. 4, is respectively described below:
Power supply conversion: the audio signal that headphone interface device sound channel line Line is obtained is converted by AC-DC, DC-DC
To the power supply signal that can be used for sensor；
MCU is initially responded: after power supply is ready, MCU starts to execute preset program.By modem to the port Mic
Export a back-signalling；
Main equipment Mic monitors the back-signalling: after main equipment detects that earpiece holes are inserted into equipment, carrying out power audio
Output, while the back-signalling is monitored by Mic.If main equipment can receive the back-signalling of external equipment sending,
Main equipment exports a connection confirmation signal by Line.
The sound channel line Line of headphone interface device monitors response: after external equipment exports initial back-signalling by Mic
Enter Line listening mode, if receiving the connection confirmation signal of main equipment in 5 seconds, entire initialization is completed, and after
It is continuous to monitor Line, wait control instruction.If not receiving connection confirmation signal, entire device stops working.
Control interaction includes: to send instruction, receives instruction, process instruction, transmission is as a result, reception result, in conjunction with Fig. 3, Fig. 4
It is described as follows:
Send instruction: main equipment sends control signal, is sent to external equipment by earphone sound channel line Line.Control is sent
Monitoring headpone Mic line after signal processed waits external device data passback；
Receive instruction: interface arrangement begins listening for earphone sound channel line Line upon establishment of a connection, and received signal is logical
It crosses bandpass filter and carries out Signal separator, obtain control signal, be sent to external equipment；
Process instruction: after external equipment obtains instruction control signal, corresponding operation is executed.
Send result: external equipment executes instruction after controlling signal as a result, being sent to modem by MCU, and
It is modulated to earphone Mic line signal, is exported from earphone Mic line to main equipment end；
Reception result: after main equipment end reads signal by earphone Mic line, resolving to digital signal and handled, will
Processing result is shown on main equipment screen.
It disconnects: directly external equipment and main equipment being separated, opening operation can be completed.At this point, main equipment passes through hardware
Detection is it can be seen that external equipment disconnects, to terminate power output.External equipment loses electric power source simultaneously, to stop working.
Under specific embodiment, the external equipment can be sensor, be also possible to single-chip microcontroller, and other
External equipment；The main equipment can be the arbitrary equipment with earphone jack.Therefore, it assume that external equipment is temperature here
Sensor, main equipment are smart phone, and the temperature sensor includes headphone interface device, i.e. temperature sensor and earphone interface
Device is integrated in same system, is communicated by the channel SPI or I2C, and control method of the invention is specifically described below.
In conjunction with attached drawing 2,3,4, its specific implementation step is described as follows:
S101. by headphone interface device, smart phone and temperature sensor are connected, while temperature sensor passes through earphone
Interface arrangement obtains power supply, start-up temperature sensor from smart phone；
S102. when temperature sensor is linked into smart phone, smart phone, which sends a detection by earphone interface, to be believed
Number, headphone interface device is arrived, while starting earphone Mic line and being monitored；
S103. the detection signal that headphone interface device will receive isolates carrier signal by bandpass filter, sends
To modem；
S104. the carrier signal that modem will receive, modulation becomes digital signal, and is sent to microcontroller；
S105. after microcontroller receives digital signal, a return signal is sent to modem；
S106. modem is output to smart phone by digital signal modulated audio-frequency information, and by earphone Mic line；
S107. after smart phone receives audio-frequency information, after being parsed, connection is established with temperature sensor；
S108. after smart phone and temperature sensor establish connection, smart phone sends control by earphone sound channel line Line
Signal processed arrives headphone interface device, while starting earphone Mic line and being monitored；
Above-mentioned control signal can be beginning thermometric, read the control signal such as temperature.
S109. headphone interface device receives the control signal, carries out effective carrier signal by bandpass filter, and defeated
It is sent to modem；
S110. after modem receives carrier signal, carrier signal is converted into digital signal, and be transported to micro-control
Device processed；
S111. after microcontroller receives digital signal, digital signal is resolved to by control instruction according to agreement, is passed through
I2c is transported to temperature sensor, executes control instruction operation；
S112. the result that temperature sensor executes is transported to microcontroller, is converted into digital signal and is sent to modulation
Demodulator；
S113. modem receives digital signal, and digital signal modulated is become audio signal and passes through earphone Mic line
It is transported to smart phone；
S114. the received audio signal of smart phone after being parsed, shows result；
S115. it if necessary to opening operation, only needs directly to disconnect smart phone and temperature sensor.
In addition, the headphone interface device can be an independent interconnecting module under specific performance, it include one
Peripheral Interface is connected by the Peripheral Interface with external equipment, the Peripheral Interface can be USB interface, SD interface or its
His serial, parallel data grabbing card, persons skilled in the art are it is recognised that any equipment that can carry out data transmission connects
Mouthful, it all can serve as the Peripheral Interface of headphone interface device connection external equipment of the present invention.
The embodiment of the present invention by above-mentioned headphone interface device and the method controlled by the headphone interface device,
The application function of earphone interface is extended, can carry out data transmission transmitting with control command, realize earphone interface
Multiplexing, meanwhile, the headphone interface device can connect multiple external equipments, and it is more to improve the main equipment connection with earphone interface
The ability of kind peripheral hardware, to improve a variety of application functions for user.
One skilled in the art would recognize that the above specific embodiments are only exemplary, it is to make ability
Field technique personnel can better understand this patent content, should not be understood as the limitation to the scope of this patent, as long as
Any equivalent change or modification, each fall within the scope of this patent made by the spirit according to disclosed in this patent.
Claims (7)
1. a kind of headphone interface device, the headphone interface device is an interconnecting module, can connect multiple external equipments, described outer
Portion's equipment is sensor or single-chip microcontroller, which is characterized in that the headphone interface device includes:
Earphone interface module, for obtaining signal when connecting with main equipment；
Power supply signal separation module, the signal for will acquire are separated, and power voltage supply signal and digital signal are obtained；
Logic control module, including MCU microcontroller, for the digital signal obtained from modem is resolved to instruction control
Signal processed, controls external equipment.
2. headphone interface device according to claim 1, which is characterized in that the earphone interface module specifically includes:
The headphone interface device includes: earphone sound channel line Line, earphone Mic line, and interface of the ground wire is connect by Line from main equipment
The collection of letters number, sends signal by Mic.
3. headphone interface device according to claim 1, which is characterized in that the power supply signal separation module specifically wraps
It includes:
AC-DC converter filters to obtain for the signal progress rectifying and voltage-stabilizing for the AC frequency conversion for receiving earphone interface module
DC signal, and export to DC-DC converter；
DC-DC converter for the DC signal of input is converted into voltage signal, and is exported to bandpass filter, modulation
Demodulator, MCU and external equipment power supply；
The signal of bandpass filter, the AC frequency conversion for receiving earphone interface module separates, and obtains carrier signal,
It exports to modem；
Modem, for the carrier signal of simulation is converted to digital signal, output to Logic control module.
4. according to claim 1 to the headphone interface device of 3 any one, which is characterized in that the headphone interface device and outer
Portion's integration of equipments in the same system, is communicated by the channel SPI or I2C；Or the headphone interface device and external equipment
Independently, it is communicated by serial line interface.
5. a kind of control method based on headphone interface device, which is characterized in that the described method includes:
It shakes hands connection, by headphone interface device, establishes the connection of main equipment and multiple external equipments, the external equipment is to pass
Sensor or single-chip microcontroller, and signal is obtained when connecting with main equipment, and isolate power supply signal, and connect back to and should and receive
Connect confirmation signal；
Control interaction, external equipment wait follow-up signal and isolate instruction control signal, control signal by described instruction, lead to
It crosses the headphone interface device and main equipment carries out data interaction.
6. a kind of control method based on headphone interface device according to claim 5, which is characterized in that the connection of shaking hands
Include:
Power supply conversion: for the audio signal that headphone interface device is obtained by AC-DC, DC-DC, which is converted to, can be used for sensor
Power supply signal；
It is initial to respond: a back-signalling is exported to the port Mic by headphone interface device；
Main equipment Mic monitors the back-signalling: after main equipment detects that earpiece holes are inserted into equipment, it is defeated to carry out power audio
Out, while by Mic the back-signalling is monitored；If main equipment can receive the back-signalling of external equipment sending, lead
Equipment exports a connection confirmation signal by Line；
The sound channel line Line of headphone interface device monitors response: after external equipment exports initial back-signalling by Mic i.e. into
Enter Line listening mode, if receiving the connection confirmation signal of main equipment in the given time, and continues to monitor Line, wait to be controlled
System instruction.
7. a kind of control method based on headphone interface device according to claim 5, which is characterized in that the control interaction
Include:
Send instruction: main equipment sends instruction control signal, is sent to external equipment by earphone sound channel line Line, and monitor ear
Machine Mic line waits external device data passback；
Receive instruction: headphone interface device begins listening for earphone sound channel line Line upon establishment of a connection, and after receiving signal, carries out
Signal separator obtains control signal, is sent to external equipment；
Process instruction: after external equipment obtains instruction control signal, corresponding operation is executed；
Send result: external equipment executes the result data after described instruction control signal, is sent to by headphone interface device
Modem is modulated into earphone Mic line signal, exports from earphone Mic line to main equipment end；
Reception result: it after main equipment end reads signal by earphone Mic line, resolves to digital signal and is handled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210368281.7A CN103702249B (en) | 2012-09-28 | 2012-09-28 | A kind of headphone interface device and the control method based on the headphone interface device |
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| CN201210368281.7A CN103702249B (en) | 2012-09-28 | 2012-09-28 | A kind of headphone interface device and the control method based on the headphone interface device |
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| CN103702249B true CN103702249B (en) | 2019-07-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105472919A (en) * | 2014-08-13 | 2016-04-06 | 中兴通讯股份有限公司 | Method for preventing dropping by means of terminal equipment fitting, terminal equipment fitting thereof and terminal equipment |
| CN104820579B (en) * | 2015-04-10 | 2019-01-22 | 苏州尚德智产通信技术有限公司 | A kind of sensor-based system and method for sensing comprising mobile terminal and peripheral device |
| CN104820578B (en) * | 2015-04-10 | 2018-05-01 | 苏州尚德智产通信技术有限公司 | A kind of computer peripheral device and driving method |
| CN108377291B (en) * | 2018-01-29 | 2020-05-12 | 维沃移动通信有限公司 | Communication method based on earphone interface, mobile terminal and storage medium |
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| CN2702372Y (en) * | 2004-04-30 | 2005-05-25 | 颜聪裕 | 7.1 sound track surround sound ear phone with USB interface |
| CN101610440A (en) * | 2008-06-19 | 2009-12-23 | 鸿富锦精密工业（深圳）有限公司 | Electronic installation |
| CN101945314A (en) * | 2010-10-02 | 2011-01-12 | 张沈平 | A kind of earphone, corresponding audiogenic device and control method |
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|---|---|---|---|---|
| CN2702372Y (en) * | 2004-04-30 | 2005-05-25 | 颜聪裕 | 7.1 sound track surround sound ear phone with USB interface |
| CN101610440A (en) * | 2008-06-19 | 2009-12-23 | 鸿富锦精密工业（深圳）有限公司 | Electronic installation |
| CN101945314A (en) * | 2010-10-02 | 2011-01-12 | 张沈平 | A kind of earphone, corresponding audiogenic device and control method |
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Effective date of registration: 20201113 Address after: 221700 4-1-110-shop, Nanyuan new town, Fengxian County, Xuzhou City, Jiangsu Province Patentee after: Song Yixiao Address before: 201616 Shanghai city Songjiang District Guangfulin Road No. 4855, No. 20 in the territory Patentee before: Phicomm (Shanghai) Co.,Ltd. |