WO2016000611A1 - 音频传输电路 - Google Patents

音频传输电路 Download PDF

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Publication number
WO2016000611A1
WO2016000611A1 PCT/CN2015/083015 CN2015083015W WO2016000611A1 WO 2016000611 A1 WO2016000611 A1 WO 2016000611A1 CN 2015083015 W CN2015083015 W CN 2015083015W WO 2016000611 A1 WO2016000611 A1 WO 2016000611A1
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WO
WIPO (PCT)
Prior art keywords
subunit
module
connector
transmission circuit
connection end
Prior art date
Application number
PCT/CN2015/083015
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English (en)
French (fr)
Inventor
陈�峰
胡静
Original Assignee
王玮冰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 王玮冰 filed Critical 王玮冰
Publication of WO2016000611A1 publication Critical patent/WO2016000611A1/zh

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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones

Definitions

  • the present invention relates to the field of audio device technologies, and in particular, to an audio transmission circuit.
  • Headphones or headsets are indispensable peripheral main electronic devices in modern main electronic devices such as mobile phones or tablets. Headphones bring great convenience and usefulness to our lives, and they are simple and fashionable to use.
  • peripheral main electronic devices such as headphones has been low, which not only increases the peripheral cost of the main electronic device, but also causes inconvenience to the user during use.
  • the present invention provides an audio transmission circuit for transmitting an audio signal, wherein the audio transmission circuit includes an audio plug, an audio component, and n subunits, and the audio plug and the audio component pass
  • the subunit realizes signal conduction, and at least one of the subunits includes a function module capable of performing a preset function, where n ⁇ 2;
  • Each of the subunits includes a first connection end and a second connection end;
  • the second connection end of the sub-unit of the previous one is selectively connected to the first connection end of the latter sub-unit to implement signal conduction between the sub-units.
  • first connection end and the second connection end each include at least one connector, and when the second connection end of the current sub-unit is connected to the first connection end of the latter sub-unit, The connector of the first connection end is electrically connected to the connector of the corresponding second connection end.
  • the first connection end includes a first signal connector
  • the second connection end includes a second signal connector
  • the first signal connector and the second The signal connector is electrically conductive
  • the audio transmission circuit further includes an acoustic signal line, the acoustic signal line includes a first segment and a second segment, and one end of the first segment is connected to the audio plug, and the other end of the first segment Connecting a first signal connector of the first sub-unit, one end of the second segment is connected to the audio component, and the other end of the second segment is connected to a second signal connector of the nth sub-unit .
  • first connection end of each of the subunits further includes a first microphone connector
  • second connection end of the i th subunit further includes a second microphone connector
  • the first microphone connector and the second microphone connector are electrically connected;
  • the audio transmission circuit further includes a microphone signal line, one end of the microphone signal line is connected to the audio plug, and the other end of the microphone signal line is connected to the first microphone connector of the first sub-unit, 1 ⁇ i ⁇ n-1.
  • the audio transmission circuit further includes a first wire control module, the first wire control module is located in one of the subunits, and the first wire control module is connected to the first microphone of the subunit where the subline unit is located Head connection.
  • the audio transmission circuit further includes a first detection module, the first detection mode The block is located in the same sub-unit as the first wire control module, and the first detecting module detects the connection between the sub-unit in which the sub-unit is located and the adjacent sub-unit, and gives the first detection result to the The first line control module.
  • the audio transmission circuit further includes at least one second wire control module, wherein the second wire control module and the first wire control module are located in different subunits, and the second wire control module and the location thereof The first microphone connector of the subunit is connected.
  • the audio transmission circuit further includes a second detection module, the second detection module and the second remote control module are located in the same subunit, and the second detection module detects the subunit where the second detection module is located The connection with the adjacent subunits is sent to the second remote control module of the subunit where the second detection module is located.
  • the kth subunit includes the second wire control module and the function module, and in the kth subunit, the second wire control module is connected to the function module, 1 ⁇ k ⁇ n.
  • the nth subunit includes the function module, and in the nth subunit, the function module includes a Bluetooth earphone module.
  • the n-1th subunit further includes the function module, in the n-1th subunit, the function module includes a battery module, and the n-1th subunit further includes a second connection end battery output connector, the battery module is connected to the battery output connector, and the first connection end of the nth subunit further includes a battery input connector, the battery input connector connection Bluetooth headset module;
  • the battery input connector is electrically connected to the battery output connector.
  • the n-1th subunit further includes the function module, and in the n-1th subunit, the function module includes an interface protocol conversion module, and the n-1th subunit
  • the second connection end further includes a first type interface connector
  • the first connection end of the n-1th subunit further includes a second type interface connector
  • the interface protocol conversion module respectively connects the One a type interface connector and a second type interface connector
  • the first connection end of the nth sub-unit further includes an interface connector of the Bluetooth headset module;
  • the interface connector of the Bluetooth earphone module is coupled with the first type interface connector .
  • the nth subunit further includes a power management module, the power management module is connected to the Bluetooth headset module, and the power management module is further connected to the first signal connector and/or the first microphone connector .
  • the jth subunit of the audio transmission circuit further includes a microphone module, and the microphone module is connected to the first microphone connector of the jth subunit, 1 ⁇ j ⁇ n.
  • the first connection end further includes a first ground signal connector
  • the second connection terminal further includes a second ground signal connector, the first ground signal connector And the second ground signal connector is electrically connected;
  • the audio transmission circuit further includes at least one control button, and the control button is electrically connected to the audio plug.
  • At least the mth subunit includes the control button and the function module, and in the mth subunit, the control button is connected to the function module to control the function module, 1 ⁇ m ⁇ n.
  • the audio transmission circuit further includes a first wire control module, the first wire control module is located in one of the subunits, and the first wire control module is electrically connected to the audio plug,
  • the control button is first connected to the first wire control module, and is electrically connected to the audio plug through the first wire control module.
  • control button is located in at least one of the subunits, at least part of the first connection end includes a first control button connector, and at least part of the second connection end includes a second control button connector.
  • the control button signal between the subunits is turned on by the first control button connector and the second control button connector.
  • the function module includes one or more of a flash memory module, an audio codec module, an interface protocol conversion module, a sensor module, a wireless transceiver unit module, a battery module, and a CPU.
  • the audio transmission circuit further includes another audio component and another acoustic signal line, and the other audio component is electrically connected to the audio plug through the other acoustic signal line.
  • the audio transmission circuit provided by the present invention has the following advantages:
  • the audio transmission circuit includes an audio plug, an audio component, and n subunits, each of the subunits including a first connection end and a second connection end, in each of the In the subunit, the first connection end is connected to the second connection end; the second connection end of the previous subunit is selectively connected to the first connection end of the latter subunit.
  • the first connection end and the second connection end can transmit signals such as an audio signal, and when the signal of the audio plug and the audio component is turned on by the subunit, a complete headphone function can be realized; at least one of the sub-functions
  • the unit includes a function module that can perform preset functions, and can implement selection between multiple functions, thereby improving the integration of the device.
  • FIG. 1 is a schematic diagram of an audio transmission circuit in a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of a second subunit in the first embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an audio transmission circuit in a second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a first subunit in a second embodiment of the present invention.
  • Figure 5 is a schematic diagram of a second subunit in the second embodiment of the present invention.
  • Figure 6 is a schematic diagram of a third subunit in a second embodiment of the present invention.
  • the core idea of the present invention is to provide an audio transmission circuit for transmitting an audio signal, the audio transmission circuit comprising an audio plug, an audio component and n subunits, the audio plug and the audio component pass
  • the subunits implement signal conduction, and at least one of the subunits includes a function module that can perform a preset function, where n ⁇ 2; each of the subunits includes a first connection end and a second connection end; The second connection end of the sub-unit of the previous one is selectively connected to the first connection end of the latter sub-unit to implement signal conduction between the sub-units.
  • a complete earphone function can be realized; at least one of the subunits includes a function capable of performing a preset function.
  • the module can realize the selection between multiple functions to improve the integration of the device.
  • FIG. 1 is a schematic diagram of an audio transmission circuit according to a first embodiment of the present invention
  • FIG. 2 is a second sub-unit of the first embodiment of the present invention.
  • the audio transmission circuit 1 includes two audio components: a first audio component 12 and a second audio component 13, wherein the first audio component 12 is a left earphone, and the second audio component 13 It is a right earplug; or the first acoustic component 12 is a right earplug, and the second acoustic component 13 is a left earplug.
  • the audio transmission circuit 1 can implement a conventional earphone function to transmit an audio signal of the main electronic device to the left earphone and the right earplug.
  • the audio transmission circuit 1 includes an audio plug 11, a first audio component 12 (left ear or right earplug), a second audio component 13 (right earplug or left earplug), and n subunits, n ⁇ 2 And n is a positive integer.
  • n is 2, 3, 4, 5, 6, or more.
  • the audio plug 11 is configured to be connected to the main electronic device (mobile phone, media player or tablet computer, etc.), and the first audio component 12 and the second audio component 13 pass through at least one subunit (the first The subunit 1U1 and/or the second subunit 1U2) achieve signal conduction with the audio plug 11.
  • the main electronic device mobile phone, media player or tablet computer, etc.
  • the first audio component 12 and the second audio component 13 pass through at least one subunit (the first The subunit 1U1 and/or the second subunit 1U2) achieve signal conduction with the audio plug 11.
  • the audio plug 11 includes a first channel terminal 111 (left channel terminal), a second channel terminal 112 (right channel terminal), and a ground terminal 113, wherein the first channel The terminal 111 is for transmitting a left channel signal HPL, and the second channel terminal 113 is for transmitting a right channel signal HPR.
  • the audio transmission circuit 1 may further include only the first audio component 12 (left earphone), and does not include the second audio component 13 (right earplug). The audio plug 11 then includes only the first channel terminal 111 and does not include the second channel terminal 112.
  • Each of the subunits includes a first connection end and a second connection end, and the second connection end of the previous sub-unit is selectively connected to the first connection end of the latter sub-unit to implement the sub-unit
  • the signal is turned on.
  • the sub-unit 1U1 includes a first connection end U1I and a second connection end U1O
  • the sub-unit 1U2 includes a first connection end U2I and a second connection end U2O
  • the second connection end U1O is selected.
  • the first connection terminal U2I is connected to the first connection.
  • the first connection end includes a first signal connector
  • the second connection end includes a second signal connector
  • the first signal connector and the first The two signal connectors are electrically conductive.
  • the first connection terminal U1I includes a first signal connector U1HI
  • the second connector U1O includes a second signal connector U1HO
  • the first connector U2I includes a first signal connector U2HI
  • a second The connection terminal U2O includes a second signal connector U2HO.
  • the first connection end further includes a first ground signal connector
  • the second connection terminal further includes a second ground signal connector
  • the second connection end of the current one of the subunits is connected to the latter
  • the first connection terminal U1I includes a first ground signal connector U1GI
  • the second connection terminal U1O includes a second ground signal connector U1GO
  • the first connection terminal U2I includes a first ground signal connector U2GI
  • a second The connection terminal U2O includes a second ground signal connector U2GO.
  • the second connection terminal U1O When the second connection terminal U1O is connected to the first connection terminal U2I, the second ground signal connector U1GO is connected to the first ground signal connector U2GI.
  • the first ground signal connector U1GI is used to connect the ground terminal 113, and the second ground signal connector U2GO is used to connect the first audio component 12.
  • the first channel terminal 111 is fixedly connected to the first signal connector U1HI, in other embodiments of the present invention, the one-channel terminal 111 may be selectively connected to any of the first connection ends, that is, the first signal connection head U1HI or the A signal connector U2HI.
  • the first audio component 12 is fixedly connected to the second signal connector U2HO. In other embodiments of the present invention, the first audio component 12 can be selectively connected to any of the second components.
  • the signal connector that is, the second signal connector U1HO or the second signal connector U2HO can be selectively connected as needed.
  • the audio transmission circuit 1 further includes an acoustic signal line 14.
  • the audio signal line 14 includes a first segment 141 and a second segment 142.
  • One end of the first segment 141 is connected to the audio plug 11 (connecting the first channel terminal 111), the other end of the first segment is connected to the first signal connector U1HI, and one end of the second segment 142 is connected to the first audio component 12, the second segment The other end of the 141 is connected to the second signal connector U2HO.
  • At least one of the subunits includes a function module that can perform a preset function
  • the function module includes a flash memory module, an audio codec module, an interface protocol conversion module, and a sensor module (eg, a temperature sensor module, a humidity sensor) Module, pressure sensor module, magnetic sensor module, gas sensor module, light sensor module, motion sensor module, attitude sensor module, etc.), wireless transceiver unit module (such as Bluetooth, WIFI, ZigBee, etc.), battery One or several of the module and the CPU.
  • the subunit 1U2 includes one of the function modules 1F, as shown in FIG. 2, wherein the function module is a Bluetooth headset module, and the Bluetooth headset module is a module for implementing a Bluetooth headset function.
  • the Bluetooth headset module includes all the components required to implement a complete Bluetooth headset (excluding components other than earplugs, such as components such as a microphone, a battery, etc.), the circuit structure of which is understood by those skilled in the art, Do not repeat them.
  • the function module 1F is connected to the second signal connector U2HO and the first ground signal connector U2GO, respectively.
  • the second signal connector U1HO is connected to the first signal connector U2HI (at the same time, the second ground signal connector) U1GO is connected to the first ground signal connector U2GI) to realize signal transmission between the first audio component 12, the second audio component 13 and the audio plug 11, the first audio component 12 and the second audio
  • the component 13 receives the audio signal of the main electronic device; when the connection between the second signal connector U1HO and the first signal connector U2HI is disconnected (at the same time, the second ground signal connector)
  • the connection of the U1GO to the first ground signal connector U2GI) is broken, and the first audio component 12 cannot receive the signal of the audio plug 11 through the acoustic signal line 14, the function module 1F
  • the Bluetooth headset module can start working, and the first audio component 12 can receive the audio signal in a wireless manner.
  • the subunit 1U2 and the first audio component 12 can be used as an ordinary
  • the subunit 1U1 may also include a flash module, an audio codec module, an interface protocol conversion module, and a sensor module (such as a temperature sensor module, a humidity sensor module, a pressure sensor module, a magnetic sensor module, and a gas).
  • a sensor module such as a temperature sensor module, a humidity sensor module, a pressure sensor module, a magnetic sensor module, and a gas.
  • the first connection end includes a first signal connector and a first ground signal connector
  • the second connector includes a second signal connector and a second ground signal connector.
  • the connection manner of the connection head of the first connection end and the connection head of the corresponding second connection end is not specifically limited.
  • the connection head of the previous sub-unit can be connected by a pin structure.
  • the connector of the subunit for example, the connector of the subunit of the previous one may also be connected to the connector of the latter subunit by a USB interface structure, and, for example, the connector of the subunit of the previous one is also
  • the connector of the latter subunit can be connected through a connecting line, etc., as long as the signal conduction of the connector of the previous subunit and the connector of the latter subunit can be realized, also in the present invention.
  • a connector of a plurality of connection modes may be included in the same audio transmission circuit.
  • FIG. 3 is a schematic diagram of an audio transmission circuit according to a second embodiment of the present invention
  • FIG. 4 is a first sub-unit of the second embodiment of the present invention
  • FIG. 5 is a schematic diagram of a second subunit according to a second embodiment of the present invention
  • FIG. 6 is a schematic diagram of a third subunit according to the second embodiment of the present invention.
  • reference numerals denote the same components as those of the first embodiment, which are the same as those of the first embodiment.
  • the audio transmission circuit 2 of the second embodiment is substantially the same as the audio transmission circuit 1 of the first embodiment, except that the first connection end of each of the subunits further includes a first microphone connector.
  • the second connection end of the i-th sub-unit further includes a second microphone connector, wherein 1 ⁇ i ⁇ n-1, the audio transmission circuit 2 can implement a conventional headset function.
  • the audio transmission circuit 2 includes three subunits as an example for description.
  • the audio transmission circuit 2 includes three subunits: a first subunit 2U1, a second subunit 2U2, and a third subunit 2U3.
  • the subunit 2U1 includes a first connection end U1I and a second connection end U1O
  • the subunit 2U2 includes a first connection end U2I and a second connection end U2O
  • the subunit 2U3 includes a first connection end U3I and a second a connection terminal U3O
  • the second connection terminal U1O selectively connecting the first connection terminal U2I or the first connection terminal U3I to implement the audio signal (left channel signal HPL) in the audio plug 11 and
  • the first acoustic component 12 (left earplug) is transferred between.
  • the first connection terminal U1I includes a first signal connector U1HI
  • the second connector terminal U1O includes a second signal connector U1HO
  • the first signal connector U1HI and the device The second signal connector U1HO is electrically conductive
  • the first connection terminal U2I includes a first signal connector U2HI
  • the second connector terminal U2O includes a second signal connector.
  • U2HO, the first signal connector U2HI and the second signal connector U2HO are electrically connected
  • the first connector U3I includes a first signal connector U3HI
  • the second connection terminal U3O includes a second signal connection
  • the head U3HO, the first signal connector U3HI and the second signal connector U3HO are electrically turned on.
  • the second signal connector U1HO selectively connects the first signal connector U2HI or the first A signal connector U3HI is implemented to effect transmission of the audio signal (left channel signal HPL) between the audio plug 11 and the first audio component 12 (left earbud).
  • the first connection end further includes a first ground signal connector
  • the second connection end further includes a second ground signal connector, the first ground signal connector And the second ground signal connector is electrically connected.
  • the second connection end of the subunit is connected to the first connection end of the subunit, the second ground signal of the previous subunit The connector is electrically connected to the first ground signal connector of the latter subunit.
  • the first connection terminal U1I includes a first ground signal connector U1GI
  • the second connection terminal U1O includes a second ground signal connector U1GO
  • the U1GO is electrically conductive
  • the first connection terminal U2I includes a first ground signal connector U2GI
  • the second connection terminal U2O includes a second ground signal connector U2GO, the first ground signal connector U2GI and the second ground signal connector
  • the U2GO is electrically conductive
  • the first connection terminal U3I includes a first ground signal connector U3GI
  • the second connection terminal U3O includes a second ground signal connector U3GO
  • the first ground signal connector U3GI and the second ground signal connector U3GO is electrically conductive.
  • the second connection terminal U1O When the second connection terminal U1O is selectively connected to the first connection terminal U2I or the first connection terminal U3I, the second ground signal connector U1GO selectively connects the first ground signal connector U2GI or the The first ground signal connector U3GI is described.
  • the first ground signal connector U1GI (the first ground signal connector of the first subunit) is used to connect the ground terminal 113, and the first ground signal connector U3GO (the nth sub A second ground signal connector of the unit is used to connect the first audio component 12.
  • the audio plug 21 further includes a microphone terminal 214 to receive the microphone signal MIC.
  • the audio transmission circuit 2 further includes a microphone signal line 25, To transmit the microphone signal MIC.
  • the first microphone connector is connected to the second microphone connector in the i-th sub-unit; the second connector of the current sub-unit is connected to the first connection of the latter sub-unit
  • the second microphone connector of the previous subunit is electrically connected to the first microphone connector of the latter subunit.
  • the first connection terminal U1I includes a first microphone connector U1MI
  • the second connector terminal U1O includes a second microphone connector U1MO
  • the second microphone connector U1MO is electrically conductive
  • the first connector U2I includes a first microphone connector U2MI
  • the second connector U2O includes a second microphone connector U2MO.
  • the first microphone connector U2MI and the second microphone connector U2MO are electrically connected; in the subunit 2U3, the first connector U3I includes a first microphone connector U3MI.
  • the second microphone connector U1MO is selectively connected to the first microphone connector U2MI, the second microphone connector U2MO is selectively connected to the first microphone connector U3MI, and further, the second microphone connector U1MO
  • the first microphone connector U3MI can also be selectively connected, the subunit 2U1 is directly connected to the subunit 2U3, and when the second microphone connector U1MO is connected to the first microphone connector U3MI, the sub The unit 2U2 does not need to access between the audio plug 21 and the first audio component 12 to realize signal transmission between the audio plug 21 and the first audio component 12.
  • the microphone terminal 214 is fixedly connected to the first microphone connector U1MI (the first microphone connector of the first subunit), and in other embodiments of the invention, the microphone terminal 214 can selectively connect any of the first microphone connectors, that is, the first microphone connector U1MI, the first microphone connector U2MI, or the first microphone connector U3MI can be selectively connected as needed.
  • one end of the microphone signal line 25 is connected to the audio plug 21 (connecting the microphone terminal 214), and the other end of the microphone signal line 25 is connected to the first sub-unit 2U1.
  • the audio transmission circuit 2 further includes a first wire control module, the first wire control module is located in one of the subunits, and the first wire control module is connected to the first microphone of the subunit where the subwire unit is located
  • the first connection module enables the first wire control module to indirectly control the playback volume of the left channel and the right channel by communicating with the main electronic device, and can also control the working state of the microphone signal, and the circuit of the first wire control module
  • the first sub-unit 2U1 includes a first wire control module 211, and the first wire control module 211 is connected to the first microphone connector U1MI.
  • the audio transmission circuit 2 further includes a first detection module 212, and the first detection module 212 and the first remote control module 211 are located in the same subunit, and are located in the first subunit 2U1.
  • the first detecting module 212 detects the connection between the first sub-unit 2U1 and the second sub-unit 2U2, and sends a first detection result to the first remote control module 211.
  • the audio transmission circuit 2 further includes at least one second remote control module, where the first remote control module and the second remote control module are located in different subunits, and the second remote control module and the location thereof The first microphone connector of the subunit is connected.
  • the second sub-unit 2U2 includes a second wire control module 221, and the second wire control module 221 is connected to the first microphone connector U2MI;
  • the third sub-unit 2U3 includes a second wire control module 231, and the second wire control module 231 is connected to the first microphone connector U3MI.
  • the audio transmission circuit 2 further includes a second detection module, the second detection module and the corresponding second remote control module are located in the same subunit, and the second detection module detects The connection between the subunit and the adjacent subunit, and sends a second detection result to the second remote control module of the subunit where the second detection module is located.
  • the second sub-unit 2U2 further includes a second detecting module 222, and the second detecting module 222, detecting the connection between the subunit 2U2 and the subunit 2U1 and the subunit 2U3, the second detecting module 222 is connected to the second line control module 221; as shown in FIG.
  • the third subunit 2U3 is further
  • the second detecting module 232 is configured to detect the connection between the subunit 2U3 and the second subunit 2U2, and the second detecting module 232 is connected to the second remote control module 231.
  • the detecting module (including the first detecting module and the second detecting module) can detect the connection state of at least one connector of the subunit in which the subunit is located (the detecting mechanism can be mechanical or electronic), which is the field.
  • the detecting mechanism can be mechanical or electronic
  • the kth subunit includes the second wire control module and the function module, and in the kth subunit, the second wire control module is connected to the function module, so that the The second wire control module can control the operation of the function module, 1 ⁇ k ⁇ n.
  • the second sub-unit 2U2 further includes a function module 2F2, and the second line control module 221 is connected to the function module 2F2; as shown in FIG.
  • the three sub-units 2U3 further include a function module 2F3, and the second line control module 231 is connected to the function module 2F3.
  • the function module 2F3 is a Bluetooth headset module, and the second line control module 231 is connected to the Bluetooth headset module 2F3.
  • the Bluetooth earphone module 2F3 includes all components required for implementing a complete Bluetooth headset (removing components other than earplugs, such as components such as a microphone, a battery, etc.), and the Bluetooth headset module 2F3 may have a four-wire USB connector. (VUSB connector, D connector, D+ connector, ID connector, GND connector, GND connector may be multiplexed with the first ground signal connector U3GI) to charge the Bluetooth headset module 2F3.
  • the second sub-unit 2U2 further includes a function module 2F2
  • the function module 2F2 includes a battery module
  • the second connection end U2O of the second sub-unit 2U2 further includes a battery output connector.
  • U2TO the battery module is connected to the battery output connector U2TO.
  • the first connection end U3I of the third sub-unit 2U3 further includes a battery input connector U3TI
  • the battery input connector U3TI is connected to the Bluetooth earphone module 2F3, the battery input connector
  • the U3TI is selectively coupled to the battery output connector U2TO such that the battery module can charge the Bluetooth headset module 2F3.
  • the function module 2F2 may further include an interface protocol conversion module for converting between different types of interfaces.
  • the second connection end U2O of the second sub-unit 2U2 further includes a first type interface connector (in this embodiment, a four-wire USB connector: a VUSB' connector, a D-' connector, D+ The 'connecting head, the ID' connector, the GND connector, the GND connector may be multiplexed with the second ground signal connector U2GO), and the first connector U2I of the second sub-unit 2U2 further includes a second Type interface connector (8-pin USB ⁇ 7:0> or ⁇ 8:1> in this embodiment), the interface protocol conversion module respectively connecting the first type interface connector and the second type interface connector .
  • a first type interface connector in this embodiment, a four-wire USB connector: a VUSB' connector, a D-' connector, D+ The 'connecting head, the ID' connector, the GND connector, the GND connector may be multiplexed with the second ground signal connector U2GO
  • the four-wire USB connector of the Bluetooth headset module 2F3 is connected to the first type.
  • the interface connector is mated so that the Bluetooth headset module 2F3 can be charged by the second type of interface connector USB ⁇ 7:0>.
  • the third sub-unit 2U3 further includes a power management module (PMIC) 233, the power management module 233 is connected to the Bluetooth headset module 2F3, and the power management module is 233 is further connected to the first connection terminal U3HI and/or the first microphone connector U3MI to charge the Bluetooth earphone module 2F3 through the first connection terminal U3HI and/or the first microphone connector U3MI.
  • PMIC power management module
  • the first sub-unit 2U1 further includes a microphone module 213, and the microphone module 213 is connected to the second microphone connector U1MI of the first sub-unit 2U1.
  • the microphone module 213 may also be disposed in the second sub-unit 2U2 or the third sub-unit 2U3. According to the above description, the setting may be a person of ordinary skill in the art. Understand, do not repeat here.
  • the audio transmission circuit 2 further includes at least one control button, and the control button is electrically connected to the audio plug 21, so that the signal of the control button and the main electronic device is turned on.
  • the control button includes a volume up button K+, a volume down button K-, and an answer button Kc.
  • the volume increase key K+, the volume decrease key K-, and the answer key Kc are connected to the first wire control module 211, and the first wire control module 211 is implemented with the main electronic device. The signal is turned on.
  • the volume up key K+, the volume down key K-, and the answer key Kc are respectively connected to different wire control modules, for example, a volume down key K-connects the first wire control
  • the module 211, the answering key Kc is connected to the second wire control module 221
  • the volume increasing key K+ is connected to the second wire control module 231
  • the volume increasing key K+, the volume decreasing key K- and the answering key Kc are respectively passed through
  • the second wire control module 231, the second wire control module 221, and the first wire control module 211 implement signal conduction with the main electronic device.
  • the volume increase key K+, the volume decrease key K-, and the answer key Kc may be separately or together set in any one of the subunits or several subunits.
  • the volume down key K- is disposed in the first subunit 2U1, as shown in FIG. 4; the answer key Kc is disposed in the second subunit 2U2, as shown in FIG.
  • the volume down key K- is set in the third sub-unit 2U3 as shown in FIG.
  • the second connection terminal U1O of the first sub-unit 2U1 further includes a second control button connector U1VO and a second control button connector U1cO for transmitting control button signals (volume signal + and answer signal). c); as shown in FIG.
  • the first connection end U2I of the second sub-unit 2U1 further includes a first control button connector U2VI, and the first control button connector U2cI transmits a control button signal (volume signal + And the answering signal c)
  • the second connecting end U2O further includes a second control button connector U2VO for transmitting a control button signal (volume signal +)
  • the first control button connector U1VI is connected to the second control button a connector U2VO
  • the first control button connector U2cI is connected to the answer button Kc; as shown in FIG.
  • the first connection end U3I of the unit 2U3 further includes a first control button connector U3VO for transmitting a control button signal (volume signal +), the first control button connector U3VO is connected to the answer button K+; Controlling the connection between the button connector and the corresponding second control button connector to achieve conduction of the control button signal between the subunits.
  • the answer key Kc is connected to the function module 2F2, and when the second sub-unit 2U2 is not connected to the main electronic device, the answer key Kc is controlled.
  • the second detecting module 222 is connected to the function module 2F2, and when the second sub-unit 2U2 is connected to the main electronic device, the second detecting module 222 is used.
  • the data transmission between the function module 2F2 and the main electronic device is implemented; as shown in FIG. 6, the second detection module 232 is connected to the function module 2F3, and when the third sub-unit 2U3 is When the main electronic device is connected, the second detecting module 232 is configured to implement data transmission between the function module 2F3 and the main electronic device.
  • the audio transmission circuit 2 can be divided into an integrated working mode and a split working mode when performing work:
  • each functional part is configured by the main electronic device, including configuration mode a, configuration mode b, configuration mode c, and configuration mode d:
  • the main electronic device controls to turn off the Bluetooth headset module 2F3, and turns off the power management module 233 to close the function module 2F2.
  • the volume increase key K+, the volume decrease key K-, and the answer key Kc are connected to the first wire control module 211, thereby implementing a conventional wired headset function;
  • the main electronic device controls to turn off the Bluetooth headset module 2F3, activate the power management module 233, and activate a low-resistance driving MIC line mode (continuous or intermittent mode) to implement the Bluetooth headset module 2F3.
  • the main electronic device controls to turn on the Bluetooth headset module 2F3, but turns off the HPL driver of the Bluetooth headset module 2F3, and the main electronic device performs wired communication and pairing with the Bluetooth headset module 2F3.
  • the Bluetooth headset module 2F3 can implement all functions except for driving the first audio component 12, such as implementing wireless communication with other main electronic devices, and transmitting various sensor data on each of the subunits.
  • split working mode including split working mode 1), split working mode 2), split working mode 3)
  • the second detecting module 222 of the subunit 2U2 detects that the subunit 2U2 disconnects from the subunit 2U3, and notifies the main electronic device and each connected module, the subunit 2U3
  • the second detecting module 232 detects that the subunit 2U2 disconnects from the subunit 2U3 and notifies the Bluetooth headset module 2F3. If the subunit 2U2 disconnects from the subunit 2U3, the audio transmission circuit 2 is in a call state:
  • the main electronic device is configured to close each module of the subunit 2U1 and the subunit 2U2 Block, the Bluetooth headset module 2F3 automatically starts, and drives the HPL port of the Bluetooth headset module 2F3 to the first audio component 12, activates the microphone of the Bluetooth headset module 2F3, and the paired primary electronic device Realize the call, this is the "hot pull" function, which realizes the seamless conversion from wired call to wireless call;
  • the main electronic device configuration keeps the opening of each module of the subunit 2U1 and the subunit 2U2, and continues the call, but can only talk in mono, and the Bluetooth headset module 2F3 automatically enters the manual at this time. Start preparation state.
  • Splitting mode 2 Afterwards, the subunit 2U1 disconnects from the subunit 2U2, and the connector of the first connector U2I is not connected to the corresponding connector of the second connector UIO .
  • the detecting module 213 of the subunit 2U1 detects that the subunit 2U1 disconnects from the subunit 2U2, and notifies the main electronic device and each connected module; the second detecting module of the subunit 2U2 222 detects that the subunit 2U1 disconnects from the subunit 2U2 and notifies the interface protocol conversion module 2F2 (this chip is used to convert the USB interface into an 8-pin interface).
  • the subunit 2U1 continues to remain in a call state.
  • the subunit 2U2 can be used independently, and the subunit 2U3 originally extracted is also used independently.
  • Split working mode 3 disconnecting the subunit 2U1 from the subunit 2U2, the subunit 2U2 disconnecting from the subunit 2U3, the connection of the first connecting end U2I
  • the header is not connected to the corresponding connector of the second connector UIO, and the connector of the first connector U3I is not connected to the corresponding connector of the second connector U2O.
  • the detecting module of the subunit 2U1 detects that the subunit 2U1 disconnects from the subunit 2U2, and notifies the main electronic device and each connected module.
  • the second detecting module 222 of the subunit 2U2 detects that the subunit 2U1 disconnects from the subunit 2U2, and notifies the conversion chip and the Bluetooth earphone module 2F3. If the cable headset is in a call state when it is unplugged:
  • the main electronic device is configured to close the subunit 2U3, and the Bluetooth headset module 2F3 is configured by Dynamically starting, and driving the HPL port of the Bluetooth earphone module 2F3 to the first audio component 12, starting the microphone of the Bluetooth earphone module 2F3, and implementing a call with the paired main electronic device, which is "hot pull" "Features, that is, seamless conversion from wired call to wireless call;
  • the main electronic device configures the main electronic device to maintain the opening of each module of the subunit 2U1, and continues the call, but can only talk in mono, and the Bluetooth headset module 2F3 automatically enters the manual at this time.
  • the subunit 2U2 enters the interface transition state.
  • connection manner of the connector of the previous subunit and the connector of the latter subunit is not specifically limited.
  • the connector of the previous subunit can be inserted.
  • the connector structure of the subunit is connected to the connector of the subunit, and the connector of the subunit may be connected to the connector of the subunit by a USB interface structure, for example, the former
  • the connector of the unit may also be connected to the connector of the latter subunit through a wire structure, etc., as long as the signal of the first connection end of the previous subunit and the first connection end of the latter subunit may be realized. It is also within the scope of the inventive concept, which can be understood by those skilled in the art, and will not be described herein.

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Abstract

本发明揭示了一种音频传输电路，所述音频传输电路包括音频插头、至少一音响组件以及n个子单元，每一所述子单元均包括第一连接端以及第二连接端，在每一所述子单元内，所述第一连接端连接所述第二连接端；前一所述子单元的第二连接端选择性连接后一所述子单元的第一连接端。当通过所述子单元实现所述音频插头和音响组件的信号导通时，可以实现完整的耳机功能；至少一个所述子单元包括一可完成预设功能的功能模块，可以实现多种功能之间的选择应用，从而提高设备的集成度。

Description

音频传输电路 技术领域
本发明涉及音频装置技术领域，特别是涉及一种音频传输电路。
背景技术
耳机或耳麦(带麦克风的耳机)在手机或平板电脑等现代主电子设备中是不可少的***主电子设备。耳机给我们生活带来了极大的方便和用处，使用起来简洁时尚。但是，迄今为止，耳机等***主电子设备的集成度低，不仅增加主电子设备的外设成本，并且给使用者在使用过程中带来诸多不便。
发明内容
本发明的目的在于，提供一种音频传输电路，将耳机与至少一功能性器件整合在一起，实现多种功能之间的选择或组合应用，提高设备的集成度。
为解决上述技术问题，本发明提供一种音频传输电路，用于传输音频信号，其特征在于，所述音频传输电路包括音频插头、一音响组件以及n个子单元，所述音频插头和音响组件通过所述子单元实现信号导通，至少一个所述子单元包括一可完成预设功能的功能模块，其中，n≥2；
每一所述子单元均包括第一连接端以及第二连接端；
前一所述子单元的第二连接端选择性连接后一所述子单元的第一连接端，实现所述子单元间的信号导通。
进一步的，所述第一连接端和所述第二连接端各包括至少一连接头，当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，所述第一连接端的连接头与对应的所述第二连接端的连接头电性连接。
进一步的，在每一所述子单元内，所述第一连接端包括一第一信号连接头，所述第二连接端包括一第二信号连接头，所述第一信号连接头和第二信号连接头电性导通；
当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二信号连接头与后一所述子单元的第一信号连接头电性连接。
进一步的，所述音频传输电路还包括一音响信号线，所述音响信号线包括第一段以及第二段，所述第一段的一端连接所述音频插头，所述第一段的另一端连接第1个所述子单元的第一信号连接头，所述第二段的一端连接所述音响组件，所述第二段的另一端连接第n个所述子单元的第二信号连接头。
进一步的，每一所述子单元的第一连接端均还包括第一麦克风连接头，第i个所述子单元的第二连接端还包括第二麦克风连接头；
在第i个所述子单元内，所述第一麦克风连接头和第二麦克风连接头电性导通；
当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二麦克风连接头与后一所述子单元的第一麦克风连接头电性连接；
所述音频传输电路还包括一麦克风信号线，所述麦克风信号线的一端连接所述音频插头，所述麦克风信号线的另一端连接第1个所述子单元的第一麦克风连接头，1≤i≤n-1。
进一步的，所述音频传输电路还包括第一线控模块，所述第一线控模块位于一个所述子单元中，所述第一线控模块与其所在的所述子单元的第一麦克风连接头连接。
进一步的，所述音频传输电路还包括第一探测模块，所述第一探测模 块与所述第一线控模块位于同一所述子单元中，所述第一探测模块探测其所在的所述子单元与相邻所述子单元的连接情况，并将第一探测结果给所述第一线控模块。
进一步的，所述音频传输电路还包括至少一第二线控模块，所述第二线控模块与所述第一线控模块位于不同的所述子单元中，所述第二线控模块与其所在的所述子单元的第一麦克风连接头连接。
进一步的，所述音频传输电路还包括第二探测模块，所述第二探测模块与所述第二线控模块位于同一所述子单元中，所述第二探测模块探测其所在的所述子单元与相邻所述子单元的连接情况，并将第二探测结果发给所述第二探测模块所在子单元的第二线控模块。
进一步的，第k个所述子单元包括所述第二线控模块和所述功能模块，在第k个所述子单元内，所述第二线控模块与所述功能模块连接，1≤k≤n。
进一步的，第n个所述子单元包括所述功能模块，在第n个所述子单元内，所述功能模块包括蓝牙耳机模块。
进一步的，第n-1个所述子单元还包括所述功能模块，在第n-1个所述子单元内，所述功能模块包括电池模块，第n-1个所述子单元还包括一第二连接端电池输出连接头，所述电池模块连接所述电池输出连接头，第n个所述子单元的第一连接端还包括一电池输入连接头，所述电池输入连接头连接所述蓝牙耳机模块；
当第n-1个所述子单元的第二连接端连接第n个所述子单元的第一连接端时，所述电池输入连接头与所述电池输出连接头电性导通。
进一步的，第n-1个所述子单元还包括所述功能模块，在第n-1个所述子单元内，所述功能模块包括接口协议转换模块，第n-1个所述子单元的第二连接端还包括一第一类型接口连接头，第n-1个所述子单元的第一连接端还包括一第二类型接口连接头，所述接口协议转换模块分别连接所述第一 类型接口连接头和第二类型接口连接头，第n个所述子单元的第一连接端还包括所述蓝牙耳机模块的接口连接头；
当第n-1个所述子单元的第二连接端连接第n个所述子单元的第一连接端时，所述蓝牙耳机模块的接口连接头与所述第一类型接口连接头配合连接。
进一步的，第n个所述子单元还包括电源管理模块，所述电源管理模块连接所述蓝牙耳机模块，所述电源管理模块还连接所述第一信号连接头和/或第一麦克风连接头。
进一步的，所述音频传输电路的第j个所述子单元还包括麦克风模块，所述麦克风模块连接第j个所述子单元的第一麦克风连接头，1≤j≤n。
进一步的，在每一所述子单元内，所述第一连接端还包括第一接地信号连接头，所述第二连接端还包括第二接地信号连接头，所述第一接地信号连接头和所述第二接地信号连接头电性导通；
当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二接地信号连接头与后一所述子单元的第一接地信号连接头电性连接。
进一步的，所述音频传输电路还包括至少一控制按键，所述控制按键与所述音频插头电性导通。
进一步的，至少第m个所述子单元包括所述控制按键和所述功能模块，在第m个所述子单元内，所述控制按键与所述功能模块连接，以控制所述功能模块，1≤m≤n。
进一步的，所述音频传输电路还包括第一线控模块，所述第一线控模块位于一个所述子单元中，所述第一线控模块与所述音频插头电性导通，所述控制按键先连接所述第一线控模块，通过所述第一线控模块与所述音频插头电性导通。
进一步的，所述控制按键位于至少一所述子单元中，至少部分所述第一连接端包括一第一控制按键连接头，至少部分所述第二连接端包括一第二控制按键连接头，通过所述第一控制按键连接头和第二控制按键连接头，实现所述子单元间的控制按键信号导通。
进一步的，所述功能模块包括闪存模块、音频编解码器模块、接口协议转换模块、传感器模块、无线收发单元模块、电池模块和CPU中的一种或几种。
进一步的，所述音频传输电路还包括另一音响组件和另一音响信号线，所述另一音响组件通过所述另一音响信号线实现与所述音频插头的信号导通。
与现有技术相比，本发明提供的音频传输电路具有以下优点：
在本发明提供的音频传输电路中，所述音频传输电路包括音频插头、一音响组件以及n个子单元，每一所述子单元均包括第一连接端以及第二连接端，在每一所述子单元内，所述第一连接端连接所述第二连接端；前一所述子单元的第二连接端选择性连接后一所述子单元的第一连接端。所述第一连接端和第二连接端可以传递音频信号等信号，当通过所述子单元实现所述音频插头和音响组件的信号导通时，可以实现完整的耳机功能；至少一个所述子单元包括一可完成预设功能的功能模块，可以实现多种功能之间的选择应用，从而提高设备的集成度。
附图说明
图1为本发明第一实施例中音频传输电路的示意图；
图2为本发明第一实施例中第2个子单元的示意图；
图3为本发明第二实施例中音频传输电路的示意图；
图4为本发明第二实施例中第1个子单元的示意图；
图5为本发明第二实施例中第2个子单元的示意图；
图6为本发明第二实施例中第3个子单元的示意图。
具体实施方式
下面将结合示意图对本发明的音频传输电路进行更详细的描述，其中表示了本发明的优选实施例，应该理解本领域技术人员可以修改在此描述的本发明，而仍然实现本发明的有利效果。因此，下列描述应当被理解为对于本领域技术人员的广泛知道，而并不作为对本发明的限制。
为了清楚，不描述实际实施例的全部特征。在下列描述中，不详细描述公知的功能和结构，因为它们会使本发明由于不必要的细节而混乱。应当认为在任何实际实施例的开发中，必须做出大量实施细节以实现开发者的特定目标，例如按照有关***或有关商业的限制，由一个实施例改变为另一个实施例。另外，应当认为这种开发工作可能是复杂和耗费时间的，但是对于本领域技术人员来说仅仅是常规工作。
在下列段落中参照附图以举例方式更具体地描述本发明。根据下面说明和权利要求书，本发明的优点和特征将更清楚。需说明的是，附图均采用非常简化的形式且均使用非精准的比例，仅用以方便、明晰地辅助说明本发明实施例的目的。
本发明的核心思想在于，提供一种音频传输电路，所述音频传输电路用于传输音频信号，所述音频传输电路包括音频插头、一音响组件以及n个子单元，所述音频插头和音响组件通过所述子单元实现信号导通，至少一个所述子单元包括一可完成预设功能的功能模块，其中，n≥2；每一所述子单元均包括第一连接端以及第二连接端；前一所述子单元的第二连接端选择性连接后一所述子单元的第一连接端，实现所述子单元间的信号导通。当通过所述子单元实现所述音频插头和音响组件的信号导通时，可以实现完整的耳机功能；至少一个所述子单元包括一可完成预设功能的功能 模块，可以实现多种功能之间的选择应用，从而提高设备的集成度。
以下列举所述音频传输电路的几个实施例，以清楚说明本发明的内容，应当明确的是，本发明的内容并不限制于以下实施例，其他通过本领域普通技术人员的常规技术手段的改进亦在本发明的思想范围之内。
第一实施例
请参阅图1-图2具体说明本发明的第一实施例，其中，图1为本发明第一实施例中音频传输电路的示意图；图2为本发明第一实施例中第2个子单元的示意图。在本实施例中，所述音频传输电路1包括两个音响组件：第一音响组件12和第二音响组件13，其中，所述第一音响组件12为左耳塞，所述第二音响组件13为右耳塞；或所述第一音响组件12为右耳塞，所述第二音响组件13为左耳塞。所述音频传输电路1可以实现传统的耳机功能，实现将主电子设备的音频信号传输给左耳塞和右耳塞。
如图1所示，所述音频传输电路1包括音频插头11、第一音响组件12(左耳塞或右耳塞)、第二音响组件13(右耳塞或左耳塞)以及n个子单元，n≥2，且n为正整数。例如n为2、3、4、5、6或更多，在图1中，以n为2进行说明，即所述音频传输电路1包括两个子单元：子单元1U1和子单元1U2。所述音频插头11用于与所述主电子设备(手机、媒体播放器或平板电脑等等)连接，所述第一音响组件12、第二音响组件13通过至少一子单元(所述第1个子单元1U1和/或第2个子单元1U2)实现与所述音频插头11的信号导通。
在本实施例中，所述音频插头11包括第一声道端子111(左声道端子)、第二声道端子112(右声道端子)以及接地端子113，其中，所述第一声道端子111用于传输左声道信号HPL，所述第二声道端子113用于传输右声道信号HPR。在本发明的其它实施例中，所述音频传输电路1还可以只包括所述第一音响组件12(左耳塞)，不包括所述第二音响组件13(右耳塞)， 则所述音频插头11只包括所述第一声道端子111，不包括所述第二声道端子112。
每一所述子单元均包括第一连接端以及第二连接端，前一所述子单元的第二连接端选择性连接后一所述子单元的第一连接端，实现所述子单元间的信号导通。在本实施例中，所述子单元1U1包括第一连接端U1I和第二连接端U1O，所述子单元1U2包括第一连接端U2I和第二连接端U2O，所述第二连接端U1O选择性连接所述第一连接端U2I。
较佳的，在每一所述子单元内，所述第一连接端包括一第一信号连接头，所述第二连接端包括一第二信号连接头，所述第一信号连接头和第二信号连接头电性导通。在本实施例中，第一连接端U1I包括一第一信号连接头U1HI，第二连接端U1O包括一第二信号连接头U1HO，第一连接端U2I包括一第一信号连接头U2HI，第二连接端U2O包括一第二信号连接头U2HO，当所述第二连接端U1O连接所述第一连接端U2I时，第二信号连接头U1HO连接第一信号连接头U2HI。
一般的，所述第一连接端还包括第一接地信号连接头，所述第二连接端还包括第二接地信号连接头，当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二接地信号连接头与后一所述子单元的第一接地信号连接头电性连接。在本实施例中，第一连接端U1I包括第一接地信号连接头U1GI，第二连接端U1O包括第二接地信号连接头U1GO，第一连接端U2I包括第一接地信号连接头U2GI，第二连接端U2O包括第二接地信号连接头U2GO。当所述第二连接端U1O连接所述第一连接端U2I时，第二接地信号连接头U1GO连接第一接地信号连接头U2GI。所述第一接地信号连接头U1GI用于连接所述接地端子113，所述第二接地信号连接头U2GO用于连接所述第一音响组件12。
在本实施例中，所述第一声道端子111固定连接所述第一信号连接头 U1HI，在本发明的其它实施例中，所述一声道端子111可以选择性连接任一所述第一连接端，即可以根据需要选择性连接所述第一信号连接头U1HI或所述第一信号连接头U2HI。在本实施例中，所述第一音响组件12固定连接所述第二信号连接头U2HO，在本发明的其它实施例中，所述第一音响组件12可以选择性连接任一所述第二信号连接头，即可以根据需要选择性连接所述第二信号连接头U1HO或所述第二信号连接头U2HO。
较佳的，所述音频传输电路1还包括一音响信号线14，所述一音响信号线14包括第一段141以及第二段142，所述第一段141的一端连接所述音频插头11(连接所述第一声道端子111)，所述第一段的另一端连接第一信号连接头U1HI，所述第二段142的一端连接所述第一音响组件12，所述第二段141的另一端连接第二信号连接头U2HO。
其中，至少一个所述子单元包括一可完成预设功能的功能模块，所述功能模块包括闪存模块、音频编解码器模块、接口协议转换模块、传感器模块(例如温度感器模块，湿度感器模块，压力感器模块，磁力感器模块，气体感器模块，光敏感器模块，运动感器模块，姿态感器模块等)、无线收发单元模块(例如蓝牙，WIFI，ZigBee等模块)、电池模块和CPU中的一种或几种。
例如在本实施例中，所述子单元1U2包括一个所述功能模块1F，如图2所示，其中，所述功能模块为蓝牙耳机模块，所述蓝牙耳机模块为实现蓝牙耳机功能的模块，所述蓝牙耳机模块包括可实现完整蓝牙耳机所需的所有元器件(除去耳塞以外的元器件，例如麦克风、电池等元器件)，其电路结构为本领域的普通技术人员可以理解的，在此不作赘述。
如图2所示，所述功能模块1F分别连接所述第二信号连接头U2HO和所述第一接地信号连接头U2GO。在本实施例中，当所述第二信号连接头U1HO连接所述第一信号连接头U2HI(同时，所述第二接地信号连接头 U1GO连接所述第一接地信号连接头U2GI)，实现所述第一音响组件12、第二音响组件13与所述音频插头11之间的信号传输，所述第一音响组件12、第二音响组件13均接收到所述主电子设备的音频信号；当所述第二信号连接头U1HO与所述第一信号连接头U2HI之间的连接断开时(同时，所述第二接地信号连接头U1GO与所述第一接地信号连接头U2GI)的连接断开，则所述第一音响组件12无法通过所述音响信号线14接收所述音频插头11的信号，所述功能模块1F(所述蓝牙耳机模块)开始工作，可以通过无线的方式，使得所述第一音响组件12接受所述音频信号，此时，所述子单元1U2与所述第一音响组件12可以作为一个普通的蓝牙耳机使用。
当然，所述子单元1U1中也可以包括闪存模块、音频编解码器模块、接口协议转换模块、传感器模块(例如温度感器模块，湿度感器模块，压力感器模块，磁力感器模块，气体感器模块，光敏感器模块，运动感器模块，姿态感器模块等)、无线收发单元模块(例如蓝牙，WIFI，ZigBee等模块)、电池模块和CPU等功能模块，可以使得所述音频传输电路1具有更多的功能。
在本实施例中，所述第一连接端包括第一信号连接头和第一接地信号连接头两个连接头，所述第二连接端包括第二信号连接头和第二接地信号连接头两个连接头，所述第一连接端的连接头与对应的所述第二连接端的连接头的连接方式不做具体限制，例如，前一所述子单元的连接头可以通过插针结构连接后一所述子单元的连接头，又如，前一所述子单元的连接头也可以通过USB接口结构连接后一所述子单元的连接头，再如，前一所述子单元的连接头也可以通过连接线连接后一所述子单元的连接头，等等，只要可以实现前一所述子单元的连接头与后一所述子单元的连接头的信号导通，亦在本发明的思想范围之内。并且，同一所述音频传输电路中可以包括多种连接方式的连接头。
第二实施例
请参阅图3-图6具体说明本发明的第二实施例，其中，图3为本发明第二实施例中音频传输电路的示意图；图4为本发明第二实施例中第1个子单元的示意图；图5为本发明第二实施例中第2个子单元的示意图；图6为本发明第二实施例中第3个子单元的示意图。在图3-图6中，参考标号表示与图1-图2相同的表述与第一实施方式相同的部件。所述第二实施例的音频传输电路2与所述第一实施例的音频传输电路1基本相同，其区别在于：每一所述子单元的第一连接端均还包括第一麦克风连接头，第i个所述子单元的第二连接端还包括第二麦克风连接头，其中，1≤i≤n-1，所述音频传输电路2可以实现传统的耳麦功能。在图3中，以所述音频传输电路2包括3个所述子单元为例进行说明。在本实施例中，所述音频传输电路2包括3个子单元：第1个子单元2U1、第2个子单元2U2、第3个子单元2U3。
所述子单元2U1包括第一连接端U1I和第二连接端U1O，所述子单元2U2包括第一连接端U2I和第二连接端U2O，所述子单元2U3包括第一连接端U3I和第二连接端U3O，所述第二连接端U1O选择性连接所述第一连接端U2I或所述第一连接端U3I，以实现所述音频信号(左声道信号HPL)在所述音频插头11和所述第一音响组件12(左耳塞)之间传输。
在所述子单元2U1内，所述第一连接端U1I包括一第一信号连接头U1HI，所述第二连接端U1O包括一第二信号连接头U1HO，所述第一信号连接头U1HI和所述第二信号连接头U1HO电性导通；在所述子单元2U2内，所述第一连接端U2I包括一第一信号连接头U2HI，所述第二连接端U2O包括一第二信号连接头U2HO，所述第一信号连接头U2HI和所述第二信号连接头U2HO电性导通；在所述子单元2U3内，所述第一连接端U3I包括一第一信号连接头U3HI，所述第二连接端U3O包括一第二信号连接 头U3HO，所述第一信号连接头U3HI和所述第二信号连接头U3HO电性导通。当所述第二连接端U1O选择性连接所述第一连接端U2I或所述第一连接端U3I，所述第二信号连接头U1HO选择性连接所述第一信号连接头U2HI或所述第一信号连接头U3HI，以实现所述音频信号(左声道信号HPL)在所述音频插头11和所述第一音响组件12(左耳塞)之间传输。
一般的，在每一所述子单元内，所述第一连接端还包括第一接地信号连接头，所述第二连接端还包括第二接地信号连接头，所述第一接地信号连接头和所述第二接地信号连接头电性导通，当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二接地信号连接头与后一所述子单元的第一接地信号连接头电性连接。在本实施例中，第一连接端U1I包括第一接地信号连接头U1GI，第二连接端U1O包括第二接地信号连接头U1GO，所述第一接地信号连接头U1GI和第二接地信号连接头U1GO电性导通；第一连接端U2I包括第一接地信号连接头U2GI，第二连接端U2O包括第二接地信号连接头U2GO，所述第一接地信号连接头U2GI和第二接地信号连接头U2GO电性导通；第一连接端U3I包括第一接地信号连接头U3GI，第二连接端U3O包括第二接地信号连接头U3GO，所述第一接地信号连接头U3GI和第二接地信号连接头U3GO电性导通。当所述第二连接端U1O选择性连接所述第一连接端U2I或所述第一连接端U3I，所述第二接地信号连接头U1GO选择性连接所述第一接地信号连接头U2GI或所述第一接地信号连接头U3GI。所述第一接地信号连接头U1GI(第1个所述子单元的第一接地信号连接头)用于连接所述接地端子113，所述第一接地信号连接头U3GO(第n个所述子单元的第二接地信号连接头)用于连接所述第一音响组件12。
如图3所示，在本实施例中，所述音频插头21还包括麦克端子214，以接收麦克风信号MIC。所述音频传输电路2还包括一麦克风信号线25， 以传输所述麦克风信号MIC。
其中，在第i个所述子单元内，所述第一麦克风连接头连接所述第二麦克风连接头；当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二麦克风连接头与后一所述子单元的第一麦克风连接头电性连接。在所述子单元2U1内，所述第一连接端U1I包括一第一麦克风连接头U1MI，所述第二连接端U1O包括一第二麦克风连接头U1MO，所述第一麦克风连接头U1MI和所述第二麦克风连接头U1MO电性导通；在所述子单元2U2内，所述第一连接端U2I包括第一麦克风连接头U2MI，所述第二连接端U2O包括一第二麦克风连接头U2MO，所述第一麦克风连接头U2MI和所述第二麦克风连接头U2MO电性导通；在所述子单元2U3内，所述第一连接端U3I包括第一麦克风连接头U3MI。所述第二麦克风连接头U1MO选择性连接所述第一麦克风连接头U2MI，所述第二麦克风连接头U2MO选择性连接所述第一麦克风连接头U3MI，此外，所述第二麦克风连接头U1MO还可以选择性连接所述第一麦克风连接头U3MI，所述子单元2U1直接连接所述子单元2U3，当所述第二麦克风连接头U1MO连接所述第一麦克风连接头U3MI时，所述子单元2U2无需接入所述音频插头21和所述第一音响组件12之间，即可实现所述音频插头21和所述第一音响组件12之间的信号传输。
在本实施例中，所述麦克端子214固定连接所述第一麦克风连接头U1MI(第1个所述子单元的第一麦克风连接头)，在本发明的其它实施例中，所述麦克端子214可以选择性连接任一所述第一麦克风连接头，即可以根据需要选择性连接所述第一麦克风连接头U1MI、第一麦克风连接头U2MI或第一麦克风连接头U3MI。
较佳的，所述麦克风信号线25的一端连接所述音频插头21(连接所述麦克端子214)，所述麦克风信号线25的另一端连接第1个所述子单元2U1 的第一连接端U1MI。
其中，所述音频传输电路2还包括第一线控模块，所述第一线控模块位于一个所述子单元中，所述第一线控模块与其所在的所述子单元的第一麦克风连接头连接，使得所述第一线控模块通过与主电子设备通讯，间接控制左声道和右声道的播放音量、同时还可以控制麦克风信号的工作状态，所述第一线控模块的电路结构为本领域的普通技术人员可以理解的，在此不作赘述。较佳的，如图4所示，第1个所述子单元2U1包括第一线控模块211，所述第一线控模块211与所述第一麦克风连接头U1MI连接。
所述音频传输电路2还包括第一探测模块212，所述第一探测模块212与所述第一线控模块211位于同一所述子单元中，均位于第1个所述子单元2U1中，所述第一探测模块212探测第1个所述子单元2U1与第2个所述子单元2U2的连接情况，并发出一第一探测结果给所述第一线控模块211。
此外，所述音频传输电路2还包括至少一第二线控模块，所述第一线控模块与所述第二线控模块位于不同的所述子单元中，所述第二线控模块与其所在的所述子单元的第一麦克风连接头连接。在本实施例中，如图5所示，第2个所述子单元2U2包括第二线控模块221，所述第二线控模块221与所述第一麦克风连接头U2MI连接；如图6所示，第3个所述子单元2U3包括第二线控模块231，所述第二线控模块231与所述第一麦克风连接头U3MI连接。
在本实施例中，所述音频传输电路2还包括第二探测模块，所述第二探测模块与对应的所述第二线控模块位于同一所述子单元中，所述第二探测模块探测其所在的所述子单元与相邻所述子单元的连接情况，并发出一第二探测结果给所述第二探测模块所在子单元的第二线控模块。如图5所示，第2个所述子单元2U2还包括第二探测模块222，所述第二探测模块 222探测所述子单元2U2与所述子单元2U1和子单元2U3连接情况，所述第二探测模块222连接所述第二线控模块221；如图6所示，第3个所述子单元2U3还包括第二探测模块232，所述第二探测模块232探测所述子单元2U3与第2个所述子单元2U2的连接情况，所述第二探测模块232连接所述第二线控模块231。其中，所述探测模块(包括第一探测模块和第二探测模块)可以探测其所在的所述子单元的至少一个连接头的连接状态(探测机制可以为机械或电子方式)，此为本领域的普通技术人员可以理解的，在此不作赘述。
较佳的，第k个所述子单元包括所述第二线控模块和所述功能模块，在第k个所述子单元内，所述第二线控模块与所述功能模块连接，使得所述第二线控模块可以控制所述功能模块的工作，1≤k≤n。例如，在本实施例中，如图5所示，第2个所述子单元2U2还包括功能模块2F2，所述第二线控模块221与所述功能模块2F2连接；如图6所示，第3个所述子单元2U3还包括功能模块2F3，所述第二线控模块231与所述功能模块2F3连接。
如图6所示，所述功能模块2F3为蓝牙耳机模块，所述第二线控模块231连接所述蓝牙耳机模块2F3。所述蓝牙耳机模块2F3包括可实现完整蓝牙耳机所需的所有元器件(除去耳塞以外的元器件，例如麦克风、电池等元器件)，此外，所述蓝牙耳机模块2F3可以具有四线USB连接头(VUSB连接头、D连接头、D+连接头、ID连接头、GND连接头，GND连接头可以与所述第一接地信号连接头U3GI复用)，以为所述蓝牙耳机模块2F3充电。
如图5所示，第2个所述子单元2U2还包括功能模块2F2，所述功能模块2F2包括电池模块，第2个所述子单元2U2的第二连接端U2O还包括一电池输出连接头U2TO，所述电池模块连接所述电池输出连接头U2TO。 如图6所示，第3个所述子单元2U3的第一连接端U3I还包括一电池输入连接头U3TI，所述电池输入连接头U3TI连接所述蓝牙耳机模块2F3，所述电池输入连接头U3TI与所述电池输出连接头U2TO选择性连接，使得所述电池模块可以为所述蓝牙耳机模块2F3充电。
当然，所述功能模块2F2还可以包括接口协议转换模块，用于不同类型接口之间的转换。例如，第2个所述子单元2U2的第二连接端U2O还包括一第一类型接口连接头(在本实施例中为四线USB连接头：VUSB’连接头、D-’连接头、D+’连接头、ID’连接头、GND连接头，GND连接头可以与所述第二接地信号连接头U2GO复用)，第2个所述子单元2U2的第一连接端U2I还包括一第二类型接口连接头(在本实施例中为8针USB<7:0>或者<8:1>)，所述接口协议转换模块分别连接所述第一类型接口连接头和第二类型接口连接头。当第2个所述子单元2U2的第二连接端U2O连接第3个所述子单元2U3的第一连接端U3I时，所述蓝牙耳机模块2F3的四线USB连接头与所述第一类型接口连接头配合连接，使得可以通过所述第二类型接口连接头USB<7:0>对所述蓝牙耳机模块2F3进行充电。
优选的，如图6所示，第3个所述子单元2U3还包括电源管理模块(Power Management IC，PMIC)233，所述电源管理模块233连接所述蓝牙耳机模块2F3，所述电源管理模块233还连接所述第一连接端U3HI和/或第一麦克风连接头U3MI，以通过所述第一连接端U3HI和/或第一麦克风连接头U3MI为所述蓝牙耳机模块2F3进行充电。
如图4所示，第1个所述子单元2U1还包括麦克风模块213，所述麦克风模块213连接第1个所述子单元2U1的第二麦克风连接头U1MI。在本发明的其它实施例中，所述麦克风模块213还可以设置在第2个所述子单元2U2或第3个所述子单元2U3，根据上述描述，该设置为本领域的普通技术人员可以理解的，在此不作赘述。
较佳的，所述音频传输电路2还包括至少一控制按键，所述控制按键与所述音频插头21电性导通，从而实现所述控制按键与所述主电子设备的信号导通。在本实施例中，所述控制按键包括音量增加键K+、音量减小键K-以及接听键Kc。在本实施例中，所述音量增加键K+、音量减小键K-以及接听键Kc与所述第一线控模块211连接，通过所述第一线控模块211实现与所述主电子设备的信号导通。在本发明的其它实施例中，所述音量增加键K+、音量减小键K-和接听键Kc分别与不同的线控模块连接，例如，音量减小键K-连接所述第一线控模块211，接听键Kc连接所述第二线控模块221，所述音量增加键K+连接所述第二线控模块231，所述音量增加键K+、音量减小键K-和接听键Kc分别通过所述第二线控模块231、所述第二线控模块221和所述第一线控模块211实现与所述主电子设备的信号导通。
其中，所述音量增加键K+、音量减小键K-以及接听键Kc可以单独或一起设置在任何一个子单元或几个子单元中。优选的，所述音量减小键K-设置在第1个所述子单元2U1中，如图4所示；所述接听键Kc设置在第2个所述子单元2U2中，如图5所示；所述音量减小键K-设置在第3个所述子单元2U3中，如图6所示。
如图4所示，第1个所述子单元2U1的第二连接端U1O还包括第二控制按键连接头U1VO和第二控制按键连接头U1cO，以传输控制按键信号(音量信号+和接听信号c)；如图5所示，第2个所述子单元2U1的第一连接端U2I还包括第一控制按键连接头U2VI，第一控制按键连接头U2cI，以传输控制按键信号(音量信号+和接听信号c)，所述第二连接端U2O还包括第二控制按键连接头U2VO，以传输控制按键信号(音量信号+)，所述第一控制按键连接头U1VI连接所述第二控制按键连接头U2VO，所述第一控制按键连接头U2cI连接所述接听键Kc；如图6所示，第3个所述子 单元2U3的第一连接端U3I还包括第一控制按键连接头U3VO，以传输控制按键信号(音量信号+)，所述第一控制按键连接头U3VO连接所述接听键K+；通过所述第一控制按键连接头和对应的第二控制按键连接头的连接，实现所述子单元间的控制按键信号导通。
在本实施例中，如图5所示，所述接听键Kc与所述功能模块2F2连接，当第2个所述子单元2U2未与所述主电子设备连接时，所述接听键Kc控制所述功能模块2F2；如图6所示，所述音量增加键K+与所述功能模块2F3连接，当第3个所述子单元2U3未与所述主电子设备连接时，所述音量增加键K+控制所述功能模块2F3。
此为，如图5所示，所述第二探测模块222与所述功能模块2F2连接，当第2个所述子单元2U2与所述主电子设备连接时，所述第二探测模块222用于实现所述功能模块2F2与所述主电子设备之间的数据传输；如图6所示，所述第二探测模块232与所述功能模块2F3连接，当第3个所述子单元2U3与所述主电子设备连接时，所述第二探测模块232用于实现所述功能模块2F3与所述主电子设备之间的数据传输。
所述音频传输电路2在进行工作时，可以分为一体式工作模式和分拆式工作模式：
1.一体式工作模式，如图3所示，所述子单元2U1和所述子单元2U2相连接，所述子单元2U2和所述子单元2U3相连接，所述第一连接端U2I的连接头连接所述第二连接端UIO的对应的连接头，所述第一连接端U3I的连接头连接所述第二连接端U2O的对应的连接头。此时，所述音频插头11***所述主电子设备的音频插孔，各所述子单元上的线控模块，通过所述麦克风信号线25与所述主电子设备握手，建立通讯。为实现多种配置模式，通过所述主电子设备配置各功能部分，包括配置模式a、配置模式b、配置模式c以及配置模式d：
配置模式a，所述主电子设备控制关闭所述蓝牙耳机模块2F3，并关闭所述电源管理模块233，关闭所述功能模块2F2。所述音量增加键K+、音量减小键K-以及接听键Kc与所述第一线控模块211连通，从而实现传统的有线耳麦功能；
配置模式b，所述主电子设备控制关闭所述蓝牙耳机模块2F3，启动所述电源管理模块233，并启动低阻驱动MIC线模式(连续或间歇模式)，实现对所述蓝牙耳机模块2F3的电池充电；
配置模式c，所述主电子设备控制开启所述蓝牙耳机模块2F3，但关闭所述蓝牙耳机模块2F3的HPL驱动，所述主电子设备与所述蓝牙耳机模块2F3进行有线通讯并配对，此时，所述蓝牙耳机模块2F3可实现除了驱动所述第一音响组件12之外的所有功能，比如实现与其它主电子设备的无线通讯，传输各所述子单元上的各种传感器数据。
配置模式d，上面三种或更多配置可以混合，实现更多功能。
2.分拆式工作模式，包括分拆式工作模式1)、分拆式工作模式2)、拆式工作模式3)
分拆式工作模式1)：所述子单元2U1和所述子单元2U2相连接，所述子单元2U2断开与所述子单元2U3的连接，所述第一连接端U2I的连接头连接所述第二连接端UIO的对应的连接头，所述第一连接端U3I的连接头不连接所述第二连接端U2O的对应的连接头。
此时，所述子单元2U2的第二探测模块222探测到所述子单元2U2断开与所述子单元2U3的连接，并通知所述主电子设备及各个相连模块，所述子单元2U3的第二探测模块232探测到所述子单元2U2断开与所述子单元2U3的连接，并通知所述蓝牙耳机模块2F3。如果所述子单元2U2断开与所述子单元2U3的连接前，所述音频传输电路2处于通话状态：
所述主电子设备配置关闭所述子单元2U1和所述子单元2U2的各个模 块，所述蓝牙耳机模块2F3自动启动，并驱动所述蓝牙耳机模块2F3的HPL口至所述第一音响组件12，启动所述蓝牙耳机模块2F3的麦克风，与已配对的所述主电子设备实现通话，此为“热拔”功能，即实现有线通话至无线通话的无缝转换；
或，所述主电子设备配置保持所述子单元2U1和所述子单元2U2的各个模块的开启，继续通话，但是只能以单声道通话，此时所述蓝牙耳机模块2F3则自动进入手动启动准备状态。
分拆式工作模式2)：之后，所述子单元2U1断开与所述子单元2U2的连接，所述第一连接端U2I的连接头不连接所述第二连接端UIO的对应的连接头。所述子单元2U1的探测模块213探测到所述子单元2U1断开与所述子单元2U2的连接，并通知所述主电子设备及各个相连的模块；所述子单元2U2的第二探测模块222探测到所述子单元2U1断开与所述子单元2U2的连接，并通知接口协议转换模块2F2(此芯片用作将USB接口转换成8针接口之用)。如果在所述子单元2U1断开与所述子单元2U2的连接时，有线耳机处于通话状态，则所述子单元2U1继续保持通话状态。所述子单元2U2可以独立使用，原先拔出的所述子单元2U3也独立使用。
分拆式工作模式3)：将所述子单元2U1断开与所述子单元2U2的连接，所述子单元2U2断开与所述子单元2U3的连接，所述第一连接端U2I的连接头不连接所述第二连接端UIO的对应的连接头，所述第一连接端U3I的连接头不连接所述第二连接端U2O的对应的连接头。所述子单元2U1的探测模块探测到所述子单元2U1断开与所述子单元2U2的连接，并通知所述主电子设备及各个相连的模块。所述子单元2U2的第二探测模块222探测到所述子单元2U1断开与所述子单元2U2的连接，并通知转换芯片及所述蓝牙耳机模块2F3。如果在拔出时，有线耳机处于通话状态：
所述主电子设备配置关闭所述子单元2U3，所述蓝牙耳机模块2F3自 动启动，并驱动所述蓝牙耳机模块2F3的HPL口至所述第一音响组件12，启动所述蓝牙耳机模块2F3的麦克风，与已配对的所述主电子设备实现通话，此为“热拔”功能，即实现有线通话至无线通话的无缝转换；
或，所述主电子设备配置所述主电子设备配置保持所述子单元2U1的各个模块的开启，继续通话，但是只能以单声道通话，此时所述蓝牙耳机模块2F3则自动进入手动启动准备状态，所述子单元2U2进入接口转换状态。
同理，在本实施例中，前一所述子单元的连接头与后一所述子单元的连接头的连接方式不做具体限制，例如，前一所述子单元的连接头可以通过插针结构连接后一所述子单元的连接头，又如，前一所述子单元的连接头也可以通过USB接口结构连接后一所述子单元的连接头，再如，前一所述子单元的连接头也可以通过导线结构连接后一所述子单元的连接头，等等，只要可以实现前一所述子单元的第二连接端与后一所述子单元的第一连接端的信号导通，亦在本发明的思想范围之内，此为本领域的技术人员可以理解的，在此不作赘述。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (22)

  1. 一种音频传输电路，用于传输音频信号，其特征在于，所述音频传输电路包括音频插头、一音响组件以及n个子单元，所述音频插头和音响组件通过所述子单元实现信号导通，至少一个所述子单元包括一可完成预设功能的功能模块，其中，n为≥2的整数；
    每一所述子单元均包括第一连接端以及第二连接端；
    前一所述子单元的第二连接端选择性连接后一所述子单元的第一连接端，实现所述子单元间的信号导通。
  2. 如权利要求1所述的音频传输电路，其特征在于，所述第一连接端和所述第二连接端各包括至少一连接头，当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，所述第一连接端的连接头与对应的所述第二连接端的连接头电性连接。
  3. 如权利要求2所述的音频传输电路，其特征在于，在每一所述子单元内，所述第一连接端包括一第一信号连接头，所述第二连接端包括一第二信号连接头，所述第一信号连接头和第二信号连接头电性导通；
    当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二信号连接头与后一所述子单元的第一信号连接头电性连接。
  4. 如权利要求3所述的音频传输电路，其特征在于，所述音频传输电路还包括一音响信号线，所述一音响信号线包括第一段以及第二段，所述第一段的一端连接所述音频插头，所述第一段的另一端连接第1个所述子单元的第一信号连接头，所述第二段的一端连接所述音响组件，所述第二段的另一端连接第n个所述子单元的第二信号连接头。
  5. 如权利要求3所述的音频传输电路，其特征在于，每一所述子单元的第一连接端均还包括第一麦克风连接头，第i个所述子单元的第二连接端还包括第二麦克风连接头；
    在第i个所述子单元内，所述第一麦克风连接头和第二麦克风连接头电性导通；
    当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二麦克风连接头与后一所述子单元的第一麦克风连接头电性连接；
    所述音频传输电路还包括一麦克风信号线，所述麦克风信号线的一端连接所述音频插头，所述麦克风信号线的另一端连接第1个所述子单元的第一麦克风连接头，其中，i为整数且1≤i≤n-1。
  6. 如权利要求5所述的音频传输电路，其特征在于，所述音频传输电路还包括第一线控模块，所述第一线控模块位于一个所述子单元中，所述第一线控模块与其所在的所述子单元的第一麦克风连接头连接。
  7. 如权利要求6所述的音频传输电路，其特征在于，所述音频传输电路还包括第一探测模块，所述第一探测模块与所述第一线控模块位于同一所述子单元中，所述第一探测模块探测其所在的所述子单元与相邻所述子单元的连接情况，并将第一探测结果给所述第一线控模块。
  8. 如权利要求6所述的音频传输电路，其特征在于，所述音频传输电路还包括至少一第二线控模块，所述第二线控模块与所述第一线控模块位于不同的所述子单元中，所述第二线控模块与其所在的所述子单元的第一麦克风连接头连接。
  9. 如权利要求8所述的音频传输电路，其特征在于，所述音频传输电路还包括第二探测模块，所述第二探测模块与对应的所述第二线控模块位 于同一所述子单元中，所述第二探测模块探测其所在的所述子单元与相邻所述子单元的连接情况，并将第二探测结果发给所述第二探测模块所在子单元的第二线控模块。
  10. 如权利要求8所述的音频传输电路，其特征在于，第k个所述子单元包括所述第二线控模块和所述功能模块，在第k个所述子单元内，所述第二线控模块与所述功能模块连接，其中，k为整数且1≤k≤n。
  11. 如权利要求10所述的音频传输电路，其特征在于，第n个所述子单元包括所述功能模块，在第n个所述子单元内，所述功能模块包括蓝牙耳机模块。
  12. 如权利要求11所述的音频传输电路，其特征在于，第n-1个所述子单元还包括所述功能模块，在第n-1个所述子单元内，所述功能模块包括电池模块，第n-1个所述子单元的第二连接端还包括一电池输出连接头，所述电池模块连接所述电池输出连接头，第n个所述子单元的第一连接端还包括一电池输入连接头，所述电池输入连接头连接所述蓝牙耳机模块；
    当第n-1个所述子单元的第二连接端连接第n个所述子单元的第一连接端时，所述电池输入连接头与所述电池输出连接头电性导通。
  13. 如权利要求11所述的音频传输电路，其特征在于，第n-1个所述子单元还包括所述功能模块，在第n-1个所述子单元内，所述功能模块包括接口协议转换模块，第n-1个所述子单元的第二连接端还包括一第一类型接口连接头，第n-1个所述子单元的第一连接端还包括一第二类型接口连接头，所述接口协议转换模块分别连接所述第一类型接口连接头和第二类型接口连接头，第n个所述子单元的第一连接端还包括所述蓝牙耳机模块的接口连接头；
    当第n-1个所述子单元的第二连接端连接第n个所述子单元的第一连 接端时，所述蓝牙耳机模块的接口连接头与所述第一类型接口连接头配合连接。
  14. 如权利要求11所述的音频传输电路，其特征在于，第n个所述子单元还包括电源管理模块，所述电源管理模块连接所述蓝牙耳机模块，所述电源管理模块还连接所述第一信号连接头和/或第一麦克风连接头。
  15. 如权利要求5所述的音频传输电路，其特征在于，所述音频传输电路的第j个所述子单元还包括麦克风模块，所述麦克风模块连接第j个所述子单元的第一麦克风连接头，其中，j为整数且1≤j≤n。
  16. 如权利要求3所述的音频传输电路，其特征在于，在每一所述子单元内，所述第一连接端还包括第一接地信号连接头，所述第二连接端还包括第二接地信号连接头，所述第一接地信号连接头和所述第二接地信号连接头电性导通；
    当前一所述子单元的第二连接端连接后一所述子单元的第一连接端时，前一所述子单元的第二接地信号连接头与后一所述子单元的第一接地信号连接头电性连接。
  17. 如权利要求1所述的音频传输电路，其特征在于，所述音频传输电路还包括至少一控制按键，所述控制按键与所述音频插头电性导通。
  18. 如权利要求17所述的音频传输电路，其特征在于，至少第m个所述子单元包括所述控制按键和所述功能模块，在第m个所述子单元内，所述控制按键与所述功能模块连接，以控制所述功能模块，其中m为整数且1≤m≤n。
  19. 如权利要求17所述的音频传输电路，其特征在于，所述音频传输电路还包括第一线控模块，所述第一线控模块位于一个所述子单元中，所述第一线控模块与所述音频插头电性导通，所述控制按键先连接所述第一线 控模块，通过所述第一线控模块与所述音频插头电性导通。
  20. 如权利要求17所述的音频传输电路，其特征在于，所述控制按键位于至少一所述子单元中，至少部分所述第一连接端包括一第一控制按键连接头，至少部分所述第二连接端包括一第二控制按键连接头，通过所述第一控制按键连接头和第二控制按键连接头，实现所述子单元间的控制按键信号导通。
  21. 如权利要求1所述的音频传输电路，其特征在于，所述功能模块包括闪存模块、音频编解码器模块、接口协议转换模块、传感器模块、无线收发单元模块、电池模块和CPU中的一种或几种。
  22. 如权利要求1所述的音频传输电路，其特征在于，所述音频传输电路还包括另一音响组件和另一音响信号线，所述另一音响组件通过所述另一音响信号线实现与所述音频插头的信号导通。
PCT/CN2015/083015 2014-07-04 2015-07-01 音频传输电路 WO2016000611A1 (zh)

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