CN106162433A - A kind of head circuit and control method thereof - Google Patents
A kind of head circuit and control method thereof Download PDFInfo
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- CN106162433A CN106162433A CN201510169042.2A CN201510169042A CN106162433A CN 106162433 A CN106162433 A CN 106162433A CN 201510169042 A CN201510169042 A CN 201510169042A CN 106162433 A CN106162433 A CN 106162433A
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Abstract
The present invention proposes a kind of head circuit and control method thereof, add a dynamic configuration impedance network, its impedance can be changed by the signal that control module sends, control module is according to the use needs of different functional blocks, the output of regulation dynamic configuration impedance network and input impedance, and power supply is exported respectively to each functional block, provide reliable and stable high-quality power supply for it, reduce noise, it is to avoid impact audio signal simultaneously.
Description
Technical field
The present invention relates to earphone and manufacture field, particularly relate to a kind of head circuit and control method thereof.
Background technology
Electronic equipment (include mobile and fixing) has a wide range of applications, such as PC, panel computer,
Mobile phone, MP3 and MP4.Peripheral earphone and microphone (being commonly called as headset, or the earphone with microphone) conduct
The indispensable external equipment of one of electronic equipment, its traditional effect is to set movement or fixing electronics
The audio signal of standby internal audio codec export and is driven in the earphone of headset, generation sound or
Incoming two ears of music, simultaneously it audio electrical signal that the microphone on headset is changed can be transmitted into
The audio codec entering electronic equipment internal is further processed, thus realizes bi-directionally or uni-directionally audio frequency work(
Energy.Although the complexity of electronic equipment is more and more higher, updates increasingly faster, but user is to headset
Demand do not have too big change for many years, and this kind of trend also may proceed to down.
But due to the opening of COBBAIF, increasing function can realize on COBBAIF, but
Be problem be that COBBAIF can only provide limited power supply capacity, and can not ear-phone function well combine.
Content of the invention
It is an object of the invention to provide a kind of head circuit and control method thereof, input and output resistance can be regulated
Anti-, thus reliable and stable high-quality power supply is provided.
To achieve these goals, the present invention proposes a kind of head circuit, comprising: COBBAIF, dynamic
Configuration impedance network, control module and multiple functional block, wherein, the input of described dynamic configuration impedance network
Be connected with COBBAIF, the output of described dynamic configuration impedance network respectively with described control module and multiple work(
Can block be connected, described dynamic configuration impedance network is respectively described control module and many by changing direct impedance
Individual functional block provides different power supplys.
Further, in described head circuit, described dynamic configuration impedance network is multiple impedance control
Unit is by series connection and/or the two-dimentional impedance network composing in parallel.
Further, in described head circuit, described dynamic configuration impedance network include three in parallel
Impedance control unit, the respectively first impedance control unit, the second impedance control unit and the 3rd impedance control
Unit.
Further, in described head circuit, described first impedance control unit is normally opened impedance optimization
Network, including diode, two coupling electric capacity and resistance, described diode and resistant series, described in one
Coupling electric capacity top crown connects between described diode and resistance, and bottom crown is grounded, another described coupling electric capacity
Top crown connects the output of described dynamic configuration impedance network, and bottom crown is grounded.
Further, in described head circuit, described second impedance control unit is low-resistance short switch
Or the equivalence switchable network of low-resistance, it is connected to the input of described dynamic configuration impedance network and output at least one
Between low-ohmic switches.
Further, in described head circuit, described 3rd impedance control unit is switching power circuit.
Further, in described head circuit, described functional block is 2, connects described second respectively
Impedance control unit and the output of the 3rd impedance control unit, described control module connects described first impedance control
Unit processed.
Further, in described head circuit, described dynamic configuration impedance network includes multiple parallel connection
Impedance control unit, multiple described impedance control unit export altogether, or multiple described impedance control unit is respectively
Individually output.
Further, in described head circuit, the L channel ear being connected with described COBBAIF is also included
Machine and right-channel ear.
Further, in described head circuit, described L channel earphone and right-channel ear pass through described
Dynamic configuration impedance network is connected with described COBBAIF, and described dynamic configuration impedance network is by changing self
Impedance is respectively described L channel earphone and provides different power supplys with right-channel ear.
Further, in described head circuit, also include microphone, described microphone one end with described
COBBAIF is connected, and the other end is connected with described control module.
Also, in the present invention, it is proposed that the control method of a kind of head circuit, for control as described above
Head circuit, including step:
S100: when COBBAIF inserts main frame, described COBBAIF is control by dynamic configuration impedance network
Molding block provides power supply, and described control module enters resting state；
S200: when needs use any one functional block, wake up described control module up, by described control mould
Block sends the described dynamic configuration impedance network of signal configuration, makes described dynamic configuration impedance network configure and meets
The impedance of this functional block, and provide corresponding power supply for this functional block.
Further, in the control method of described head circuit, described head circuit includes and described sound
Frequently L channel earphone, right-channel ear and the microphone that interface is connected, described microphone also controls mould with described
Block is connected；When described COBBAIF inserts main frame, described L channel earphone and right-channel ear normally use,
When not using described microphone, by described control module, microphone cuts out.
Compared with prior art, the beneficial effects are mainly as follows: add a dynamic configuration impedance
Network, its impedance can be changed by the signal that control module sends, and control module is according to different functional blocks
Use need, the output of regulation dynamic configuration impedance network and input impedance, and power supply is exported respectively to
Each functional block, provides reliable and stable high-quality power supply for it, reduces noise, it is to avoid believe audio frequency simultaneously
Number impact.
Brief description
Fig. 1 is the structured flowchart of head circuit in the embodiment of the present invention one；
Fig. 2 is the dynamic structured flowchart configuring impedance network in the embodiment of the present invention one；
Fig. 3 is the dynamic circuit diagram configuring impedance network in the embodiment of the present invention one；
Fig. 4 a to Fig. 4 c is respectively the circuit diagram of three kinds of impedance control unit in the embodiment of the present invention one；
Fig. 5 is the dynamic structured flowchart configuring impedance network in the embodiment of the present invention two；
Fig. 6 is the dynamic structured flowchart configuring impedance network in the embodiment of the present invention three.
Detailed description of the invention
It is described in more detail below in conjunction with head circuit and control method thereof to the present invention for the schematic diagram,
Which show the preferred embodiments of the present invention, it should be appreciated that those skilled in the art can change and be described herein
The present invention, and still realize the advantageous effects of the present invention.Therefore, description below be appreciated that for
Those skilled in the art's is widely known, and is not intended as limitation of the present invention.
In order to clear, whole features of practical embodiments are not described.In the following description, it is not described in detail public affairs
The function and structure known, because they can make to due to the fact that unnecessary details and chaotic.Will be understood that
In the exploitation of any practical embodiments, it is necessary to make a large amount of implementation detail to realize the specific objective of developer,
For example according to the restriction about system or about business, an embodiment is changed into another embodiment.Separately
Outward, it should think that this development is probably complicated and time-consuming, but for people in the art
It is only routine work for Yuan.
Referring to the drawings the present invention more particularly described below by way of example in the following passage.According to following explanation and
Claims, advantages and features of the invention will be apparent from.It should be noted that, accompanying drawing all uses very simple
The form changed and all use non-ratio accurately, only in order to convenient, aid in illustrating the embodiment of the present invention lucidly
Purpose.
Embodiment one
In the present embodiment, refer to Fig. 1, it is proposed that a kind of head circuit, comprising: COBBAIF, dynamic
Configuration impedance network, control module (MCU0 or equivalent circuit) and multiple functional block, wherein, described dynamic
The input of state configuration impedance network is connected with COBBAIF, and both are connected by MIC line, described dynamic configuration
The output of impedance network is connected with described control module and multiple functional block respectively, described dynamic configuration impedance net
Network is respectively described control module by change direct impedance and multiple functional block provides different power supplys.
Concrete, head circuit also includes components and parts, such as tone frequency channel wire, wheat necessary to tradition line control earphone
Gram wind and left and right earplug (L channel earphone and right-channel ear) etc..COBBAIF can be traditional circle
Plug or USB plug, or bluetooth earphone is with main frame connection, herein without limitation, tone frequency channel wire typically wraps
Include microphone MIC line, GND line, left earplug HPL line and right earplug HPR line, be respectively connected to Mike
Wind and left and right earplug, therefore after COBBAIF inserts main frame such as mobile phone, can realize the call that receives calls
With listen the functions such as music, as earphone has line traffic control function, line control machine can be added to be connected with MIC line.Specifically make
It with as conventional earphone, is not described in detail herein.
If when needing in conventional earphone to extract power supply from tone frequency channel wire, traditional method is on MIC line
Adding a diode Dp and decoupling capacitance Cp provides power supply for other circuit, and diode Dp plays simultaneously
Buffer action.But this mode is difficult to meet for high-performance and multi-functional requirement.At the present embodiment
In, control module MCU0 (or circuit of any equivalent function) in head circuit except can be used to and its
Outside its functional block exchange data, the open and close of other functional blocks and device can be controlled, particularly may be used
With the suitable impedance network combination of differences such as () power consumptions such as modules as required dynamic configuration, make
Obtain while corresponding power supply can be provided and mate impedance.
In the present embodiment, functional block be enumerated as 2 (actually the number of functional block can be 1 or
More than 2, this can determine according to specific requirement), it is functional block 1 and functional block 2 respectively.Therefore, move
State configuration impedance networking can be that (number of impedance control unit can root for three impedance control unit in parallel
Accordingly increase according to the number of functional block or reduce), it is for the first impedance control unit Z0, the second resistance respectively
Anti-control unit Z1 and the 3rd impedance control unit Z2, as in figure 2 it is shown, wherein the first impedance control unit
Z0 is for providing power supply to control module MCU0, and the second impedance control unit Z1 provides electricity for functional block 1
Source, the 3rd impedance control unit Z2 provides power supply for functional block 2, can by regulate each impedance unit with
Change input and the output impedance at whole dynamic configuration impedance networking, provide low noise high-quality power supply.
Herein adjustable can be continuously adjustabe or simply turn off and open two states, and which kind of uses can basis
Actual demand.Additionally, dynamically configuration impedance networking is single channel multi-mode, i.e. multiple described impedance control lists
Unit's output altogether.
Refer to Fig. 3, wherein, described first impedance control unit Z0 is that normally opened impedance optimizes network, including
Diode Dp, coupling electric capacity Cp and Cn and resistance R11, described diode and resistant series, couple electric capacity
Cp top crown connects between described diode Dp and resistance R11, and bottom crown is grounded, pole on coupling electric capacity Cn
Plate meets the dynamic output VDDn configuring impedance network, and bottom crown is grounded, as shown in fig. 4 a.
Described second impedance control unit Z1 is low-resistance short switch or the equivalence switchable network of low-resistance, is at least
One low-ohmic switches SW1 being connected between the input of described dynamic configuration impedance network and output, or along figure
Dotted line short circuit coupling electric capacity Cp top crown shown in 4b.
Described 3rd impedance control unit Z2 is switching power circuit.As illustrated in fig. 4 c, in the present embodiment,
Use the switching power circuit of DC/DC boost mode, and Fig. 4 c only illustrates switch, two poles
Pipe and inductance form to obtain boosted switch power supply, are not drawn into control part.Also the MCU that can utilize of equivalence visits
Surveying and FEEDBACK CONTROL realizing complete switchgear power supply function, do not go to enumerate herein, those skilled in the art ought to know
Dawn.
In the present embodiment, the input VDDp of dynamic configuration impedance network is connected to MIC line, exports VDDn
It is that single channel output is connected to each functional module and device.MCU0 is according to Different Dynamic such as the power consumptions of modules
Configuration suitable impedance network combination so that while corresponding power supply can be provided and mate impedance.By
In the general impedance of MIC line higher (such as 2.2k ohm) of head circuit, and due to from host driven,
While utilizing it to other module for power supply of earphone, need the control of intelligence, in order to avoid just affecting earphone
Often use.
In the present embodiment, head circuit also includes the L channel earphone that is connected with described COBBAIF and right sound
Road earphone, L channel earphone and right-channel ear are by described dynamic configuration impedance network and described COBBAIF
Being connected, described dynamic configuration impedance network is respectively described L channel earphone and right sound by changing direct impedance
Road earphone provides different power supplys, and the dynamic configuration impedance network that will be similar to is applicable to L channel earphone (HPL)
The situation of power supply is provided with right-channel ear (HPR).Additionally, head circuit also includes microphone, described
Microphone one end is connected with described COBBAIF, and the other end is connected with described control module MCU0, according to need
Want to be connected according to multiple functional blocks or be not attached to.
In this another aspect implemented, it is also proposed that the control method of a kind of head circuit, for control as above
Head circuit described in Wen, including step:
S100: when COBBAIF inserts main frame, described COBBAIF is control by dynamic configuration impedance network
Molding block provides power supply, and described control module enters resting state；
S200: when needs use any one functional block, wake up described control module up, by described control mould
Block sends the described dynamic configuration impedance network of signal configuration, makes described dynamic configuration impedance network configure and meets
The impedance of this functional block, and provide corresponding power supply for this functional block.
In the present embodiment, under concrete configuration combination such as:
1st, headset mode: when the COBBAIF of earphone inserts main frame, MIC line passes through the first impedance control unit
Z0 powers to control module MCU0, control module MCU0 configuration close the 3rd impedance control unit Z2 and
Second impedance control unit Z1, dynamic configuration impedance network only has the first impedance control unit Z0 work, control
Molding block MCU0 enters dormancy, and conventional earphone function can normally use, i.e. L channel earphone and R channel ear
Machine all can normally use (answering call to keep).If it is required, control module MCU0 can be waken up at any time,
Dormancy is entered back into after work.When control module MCU0 is by wakes, can mute microphone (MIC), with power saving.
2nd, functional block 1 pattern: control module MCU0 is waken up, the 3rd impedance control unit is closed in configuration
Z2, opens the second impedance control unit Z1 (i.e. Guan Bi paralleling switch or other lowohmic networks of access in parallel),
Improve the current sourcing ability (switch SW1 also can be by dashed short-circuit) of MIC line, control module simultaneously
MCU0 open function block 1, control module MCU0 can enter dormancy, after functional block 1 works alone,
Control module MCU0 is waken up, closing function block 1 and the second impedance control unit Z1, control module MCU0
Recovering dormancy, conventional earphone function can normally use (answering call to keep).Can close when functional block 1 works
Microphone, with power saving.
3rd, functional block 2 pattern: control module MCU0 is waken up, control module MCU0 configuration unlatching the
Three impedance control unit Z2, close the second impedance control unit Z1, if needing control module MCU0 can
Continue to monitor output VDDn to realize complete boosted switch power supply, simultaneously control module MCU0 open work(
Can block 2.If the 3rd impedance control unit Z2 is complete Switching Power Supply, control module MCU0 can enter
Dormancy, after functional block 2 works alone, control module MCU0 is waken up, closing function block 2 and the 3rd resistance
Anti-control unit Z2, the recovery dormancy of control module MCU0, conventional earphone function can normally use and (answer
Call keep), when functional block 2 works can mute microphone (MIC), with power saving.
The dynamic configuration impedance network proposing in the present embodiment is single channel multi-mode, according to difference in functionality block
Demand provides corresponding reliable and stable high-quality power supply, further expands the function of earphone.
Embodiment two
In the present embodiment, it is proposed that another kind of head circuit, its cardinal principle is identical with embodiment one, no
With dynamic configuration impedance network is that multiple impedance control unit is by series connection and/or the two dimension composing in parallel
The number of impedance network, such as impedance control unit is 2, only with the first impedance control unit Z0 and
Two impedance control unit Z1 combination in parallel, or use the first impedance control unit Z0 and the 3rd impedance control
Unit Z2 processed combination in parallel, or the second impedance control unit Z1 and the 3rd impedance control unit Z2
Combination in parallel etc., the number of such as impedance control unit is 4, all uses the mode connection etc. of parallel connection.
Concrete, refer to Fig. 5, in the present embodiment, the number of impedance control unit is 3, is respectively
It is the first impedance control unit Z0, the second impedance control unit Z1 and the 3rd impedance control unit Z2, wherein,
First impedance control unit Z0 and the second impedance control unit Z1 are in parallel, then with the 3rd impedance control unit Z2
Series connection.It is pointed out that the demand of the number according to impedance control unit and difference in functionality, this area
Technical staff could be aware that and also includes the other kinds of two-dimentional impedance network connected and/or compose in parallel, at this
Do not enumerate.
Embodiment three
Refer to Fig. 6, in the present embodiment, it is proposed that another kind of head circuit, its cardinal principle and embodiment
One is identical, and except for the difference that, dynamic configuration impedance network is multichannel multi-mode, i.e. multiple impedance control unit
Individually export.For example, in the present embodiment, the number of impedance control unit is 3, be respectively for
First impedance control unit Z0, the second impedance control unit Z1 and the 3rd impedance control unit Z2, three is simultaneously
Connection, but the output of three individually linkage function block or control module MCU0, so can be by controlling
The multiple functional block of module MCU0 control works simultaneously, is independent of each other.Have more many compared to embodiment one
The function of sample.
To sum up, in the head circuit that the embodiment of the present invention provides and control method thereof, add one and dynamically join
Putting impedance network, its impedance can be changed by the signal that control module sends, and control module is according to different
The use of functional block needs, the output of regulation dynamic configuration impedance network and input impedance, and by power supply respectively
Output, to each functional block, provides reliable and stable high-quality power supply for it, reduces noise, it is to avoid right simultaneously
Audio signal impacts.
Above are only the preferred embodiments of the present invention, do not play any restriction effect to the present invention.Appoint
What person of ordinary skill in the field, in the range of without departing from technical scheme, to the present invention
The technical scheme disclosing and technology contents make the variation such as any type of equivalent or modification, all belong to without departing from
The content of technical scheme, still falls within protection scope of the present invention.
Claims (13)
1. a head circuit, it is characterised in that include: COBBAIF, dynamically configuration impedance network, control
Molding block and multiple functional block, wherein, the input of described dynamic configuration impedance network is connected with COBBAIF,
The output of described dynamic configuration impedance network is connected with described control module and multiple functional block respectively, described dynamic
State configuration impedance network is respectively described control module and multiple functional block offer difference by changing direct impedance
Power supply.
2. head circuit as claimed in claim 1, it is characterised in that described dynamic configuration impedance network is
Multiple impedance control unit are by series connection and/or the two-dimentional impedance network composing in parallel.
3. head circuit as claimed in claim 1, it is characterised in that described dynamic configuration impedance network bag
Include three impedance control unit in parallel, the respectively first impedance control unit, the second impedance control unit and
3rd impedance control unit.
4. head circuit as claimed in claim 3, it is characterised in that described first impedance control unit is
Normally opened impedance optimizes network, including diode, two coupling electric capacity and resistance, described diode and resistance string
Connection, a described coupling electric capacity top crown connects between described diode and resistance, and bottom crown is grounded, another
Described coupling electric capacity top crown connects the output of described dynamic configuration impedance network, and bottom crown is grounded.
5. head circuit as claimed in claim 3, it is characterised in that described second impedance control unit is
Low-resistance short switch or the equivalence switchable network of low-resistance, be connected to described dynamic configuration impedance net at least one
Low-ohmic switches between network input and output.
6. head circuit as claimed in claim 3, it is characterised in that described 3rd impedance control unit is
Switching power circuit.
7. head circuit as claimed in claim 3, it is characterised in that described functional block is 2, respectively
Connecting the output of described second impedance control unit and the 3rd impedance control unit, described control module connects institute
State the first impedance control unit.
8. head circuit as claimed in claim 1, it is characterised in that described dynamic configuration impedance network bag
Including the impedance control unit of multiple parallel connection, multiple described impedance control unit export altogether, or multiple described impedance
Control unit individually exports.
9. head circuit as claimed in claim 1, it is characterised in that also include and described COBBAIF phase
L channel earphone even and right-channel ear.
10. head circuit as claimed in claim 9, it is characterised in that described L channel earphone and right sound
Road earphone is connected with described COBBAIF by described dynamic configuration impedance network, described dynamic configuration impedance net
Network is respectively the described L channel earphone power supply different with right-channel ear offer by changing direct impedance.
11. head circuits as claimed in claim 1, it is characterised in that also include microphone, described wheat
Gram wind one end is connected with described COBBAIF, and the other end is connected with described control module.
The control method of 12. 1 kinds of head circuits, for control as according to any one of claim 1 to 11
Head circuit, it is characterised in that include step:
S100: when COBBAIF inserts main frame, described COBBAIF is control by dynamic configuration impedance network
Molding block provides power supply, and described control module enters resting state；
S200: when needs use any one functional block, wake up described control module up, by described control mould
Block sends the described dynamic configuration impedance network of signal configuration, makes described dynamic configuration impedance network configure and meets
The impedance of this functional block, and provide corresponding power supply for this functional block.
The control method of 13. head circuits as claimed in claim 12, it is characterised in that described earphone electricity
Road includes L channel earphone, right-channel ear and the microphone being connected with described COBBAIF, described microphone
It also is connected with described control module；When described COBBAIF inserts main frame, described L channel earphone and right sound
Road earphone normally uses, and when not using described microphone, is closed microphone by described control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169042.2A CN106162433B (en) | 2015-04-10 | 2015-04-10 | Earphone circuit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169042.2A CN106162433B (en) | 2015-04-10 | 2015-04-10 | Earphone circuit and control method thereof |
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| Publication Number | Publication Date |
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| CN106162433A true CN106162433A (en) | 2016-11-23 |
| CN106162433B CN106162433B (en) | 2021-08-24 |
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| CN204190933U (en) * | 2014-11-18 | 2015-03-04 | 潘能刚 | The automatic adaptive system of earphone impedance |
| CN204482024U (en) * | 2015-04-10 | 2015-07-15 | 杭州纳雄科技有限公司 | A kind of head circuit |
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| CN201928419U (en) * | 2011-01-21 | 2011-08-10 | 青岛海信移动通信技术股份有限公司 | Earphone and mobile communication terminal provided with same |
| CN102164263A (en) * | 2011-03-08 | 2011-08-24 | 华为终端有限公司 | Device and method of audio/video signal transmission interface |
| CN202435574U (en) * | 2011-12-27 | 2012-09-12 | 惠州Tcl移动通信有限公司 | Line-control earphone for mobile terminal |
| CN104244122A (en) * | 2013-06-13 | 2014-12-24 | 无锡华润矽科微电子有限公司 | Drive-by-wire headset and volume control circuit thereof |
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