CN105872900A - Switching device - Google Patents
Switching device Download PDFInfo
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- CN105872900A CN105872900A CN201610249196.7A CN201610249196A CN105872900A CN 105872900 A CN105872900 A CN 105872900A CN 201610249196 A CN201610249196 A CN 201610249196A CN 105872900 A CN105872900 A CN 105872900A
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- signal
- switching
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- switch
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
Abstract
The embodiment of the invention provides a switching device which comprises a second switching switch. The second switching switch is connected with a fourth transmission port used for transmitting digital and analog signals, a second analog channel and a second digital channel and used for switching the signals of the fourth transmission port between the second analog channel and the second digital channel. By means of the switching device, equipment such as earphones which have a digital mode and an analog mode can flexibly switch digital and analog transmission lines.
Description
Technical field
Embodiment of the present invention one switching device, belongs to electronics or communication technical field.
Background technology
Instantly, the terminal such as computer, panel computer and mobile phone has been popularized, and fully affects
Daily life.Its rich interface: serial ports, parallel port, HDMI (High Definition
Multimedia Interface, HDMI), SATA (Serial Advanced
Technology Attachment, Serial Advanced Technology Attachment), etc..The most most widely used
Surely belong to USB, be commonly called as USB (Universal Serial Bus, USB (universal serial bus)).
It is possible not only to connect storage device, it is also possible to as general expansion interface.Along with entering of science and technology
The speed of step USB interface is increasingly faster, and compatible equipment also gets more and more.
Meanwhile, the physical aspect of USB interface also goes through change, from TYPE-A to MINI (mini)
Arrive MICRO B again.The most popular USB physical aspect surely belongs to TYPE-C.It is the fastest
Hurry up, transmission electric current is big, also supports positive anti-plug.At present, it is possible to achieve at USB TYPE-C interface
The design of upper compatible with earphone, so that terminal is removed conventional audio interface and is possibly realized.
Inventor, during realizing the present invention, finds that prior art has following defects that
TYPE-C interface can be supported to transmit simulated audio signal and digital audio and video signals, hence in so that have
The audio frequency apparatuses such as the earphone of numeral and simulation both of which are possibly realized, but do not have one now
Kind can the mechanism that switch flexibly under numeral and simulation both of which.
Summary of the invention
The embodiment of the present invention provides a kind of switching device, make to have numeral and simulation both of which from
Equipment, it is possible to flexibly digital simulation transmission channel is switched over.
For reaching above-mentioned purpose, embodiments provide a kind of switching device, including: include
Second switching switch, described second switching switch and the 4th transmission for transmitting digital/analog signal
Port, the second analog channel and the second digital channel connect, and described second switching switch is used for will
The signal of described 4th transmission port is cut between the second analog channel and the second digital channel
Change.
The switching device of the embodiment of the present invention, switchs, by the 4th transmission ends by arranging the second switching
The digital/analog signal of mouth switches between internal digital channel and analog channel, it is achieved that
The flexible switching of digital simulation transmission channel.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the present invention
Technological means, and can be practiced according to the content of description, and the present invention's be upper in order to allow
State and can become apparent with other objects, features and advantages, below especially exemplified by the concrete reality of the present invention
Execute mode.
Accompanying drawing explanation
First embodiment of switching device from equipment side that Fig. 1 provides for the embodiment of the present invention
Structural representation；
Second embodiment of switching device from equipment side that Fig. 2 provides for the embodiment of the present invention
Structural representation；
Fig. 3 for the embodiment of the present invention provide from the 3rd embodiment of the switching device of equipment side
Structural representation；
First embodiment of switching device of the end side that Fig. 4 provides for the embodiment of the present invention
Structural representation；
Second embodiment of switching device of the end side that Fig. 5 provides for the embodiment of the present invention
Structural representation；
The numerical model analysis earphone based on TYPE-C interface that Fig. 6 provides for the embodiment of the present invention
One of frame diagram of data transmission and control circuit；
The number of the numerical model analysis earphone based on TYPE-C interface that Fig. 7 provides for the embodiment of the present invention
According to transmission and the two of the frame diagram of control circuit；
The electrical block diagram of the MIC chip that Fig. 8 provides for the embodiment of the present invention.
Description of reference numerals:
1-first switches switch；2-first interface module；3-analogue signal playing device；4-first
Transmission port；5-second transmits port；6-the first switch control module；7-the 3rd transmits port；
8-the first analog-to-digital conversion module；9-the first D/A converter module；10-second switches switch；11-
Two interface modules；12-analog signal output device；13-the 4th transmits port, 14-central processing unit；
15-the 5th transmits port.
Detailed description of the invention
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although it is attached
Figure shows the exemplary embodiment of the disclosure, it being understood, however, that can be with various shapes
Formula realizes the disclosure and should not limited by embodiments set forth here.On the contrary, it is provided that these
Embodiment is able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Embodiment one
The switching device of the present embodiment can apply to be connected with terminal from equipment, such as,
Can be arranged in earphone, in earphone, be provided with digital transmission path and analogue transmission path,
And receive the audio signal that end side sends the simulation letter play by these two paths
Number playing device such as speaker.In description below, will be with pluggable in the embodiment of the present invention
In earphone (can have MIC function) in terminal (such as mobile phone) included to cutting
Changing device is illustrated, and this earphone has numeral and two kinds of mode of operations of simulation, at it
Inside has digital channel and analog channel simultaneously.It should be noted that people in the art
Member should be appreciated that the embodiment of the present invention is not limited to earphone, the most also other have numeral and
Simulate two kinds of mode of operations or inside has the slave of digital channel and analog channel.
The switching device of the present embodiment includes the first switching switch, and the first switching switchs and is used for passing
First transmission port, the first analog channel and first digital channel of defeated digital/analog signal connect,
First switching switch is for logical at the first analog channel and the first numeral by the signal of the first transmission port
Switch between road.Further, the first switching switch can also switch with for transmission first
Second transmission port of control signal connects, for according to the first switch from the second transmission port
Control signal, carries out state switching.
Specifically, can as it is shown in figure 1, its for the embodiment of the present invention provide from equipment side
The structural representation of switching device first embodiment, this switching device includes the first switching switch 1
(as shown in FIG., hilted broadsword pair can be used to put switch), this first switching switch 1 is by the first number
Word path is connected (transmission mentioned here with the first digital data transmission end of first interface module 2
End can be lead-out terminal or the pin etc. of chip, and such as, first interface module 2 can be USB
Protocol conversion chip, the first digital data transmission end can be the end of chip output digital difference signal
Son or pin), passed by the first analogue signal of the first analog channel with analogue signal playing device 3
Defeated end connects, and with the first transmission port 4 for transmitting digital/analog signal (such as
Dp and the Dn port of TYPE-C interface) connect, first interface module 2 is used for carrying out interface and leads to
The conversion (such as can be by the module of usb protocol conversion) of letter agreement, the first switching switch 1
According to the switch controlling signal from the second transmission port 5, carry out state switching.
Wherein, the first switching switch 1 can have a following state:
First state (digital state): turn on the first digital data transmission end and the first transmission port 4,
Disconnect the first analogue signal transmission ends and the first transmission port 4.
Second state (emulation mode): turn on the first analogue signal transmission ends and the first transmission port 4,
Disconnect the first digital data transmission end and the first transmission port 4.
As it is shown in figure 1, when switch is in the first state, from first digital channel and of equipment
One transmission port 4 turns on, and can carry out Digital Transmission based on digital signal with end side from equipment
Or communication, specifically can receive the various data that end side sends and carry out further from equipment side
Process or carry out exporting (such as, show or play), or receiving each of end side transmission
Plant control command, be controlled operation etc. to from equipment.Alternatively, it is also possible to
Receive the digital signal (can be digital audio and video signals) for broadcasting that end side sends, then enter
After row protocol conversion, generate the digital signal that can be processed by the D/A converter module from equipment,
After being then passed through the digital-to-analogue conversion process of D/A converter module, then analogue signal playing device is had to carry out
Play.
On the other hand, when switch is in the second state, analogue signal playing device 3 can be direct
The analogue signal directly obtaining end side transmission next from the first transmission port 4 plays out.
Specifically, analogue signal playing device 3 can be the speaker that earpiece side is built-in, and it passes through
First switching switch 1 control is simulated signal intercommunication with the first transmission port 4, forms earpiece side
The transmission channel of analogue signal.Such as, speaker can be by the first switching switch 1 directly from the
One transmission port 4 obtains the first analogue signal of mobile phone side output, such as simulated audio signal, goes forward side by side
Row is play.
Here, thing is completed between the first transmission port 4 and the port of the port docked such as mobile phone side
After reason port grafting, between itself and mobile phone terminal, both can pass digital signal, simulation letter can have been transmitted again
Number, and the most specifically transmission digital signal or analogue signal, need to be by the first switching switch 1
Control.
Specifically, the first switching switch 1 also can obtain from the second transmission port 5 being positioned at earpiece side
Control the first switch controlling signal of the first switching switch 1 state.This second transmission port 5 is with right
After completing physical port grafting between the port of the port connect such as mobile phone side, can be from mobile phone side obtains
State the first switch controlling signal.
The embodiment of the present invention provide switching device, its be built in terminal from equipment, such as,
In the peripheral earphone equipment of terminal.This switching device is by building the first switching switch at numeral mould
Intend on transmission channel, by the first switch controlling signal number received from the second transmission port
The switching of transmission channel intended by type matrix, so that from carrying out digital and analog signaling between equipment and terminal
Changeable transmission.
Embodiment two
Switching device the second embodiment from equipment side that Fig. 2 provides for the embodiment of the present invention
Structural representation.In the present embodiment, by the earphone to have MIC function as from equipment
Instantiation illustrates.As in figure 2 it is shown, on the basis comprising entire infrastructure shown in Fig. 1
On, this switching device also includes:
First switch control module 6, this first switch control module 6 and the first switching switch 1, use
The 3rd transmission port 7 and the second transmission port 5 in transmission MIC biasing voltage signal connect；
First switch control module 6, for receiving self terminal (such as hands according to by the second transmission port 5
Machine) the first switch controlling signal and the 3rd transmission port 7 signal, to first switching switch 1
State switch over control, it is preferable that the first switch control module 6 according to first switch control
Signal processed and the 3rd transmission port 7 signal carry out with operation after result, control first switching opens
Close 1 to switch between above-mentioned first state and the second state.
Generally, under earphone is in emulation mode, the i.e. first switching switch 1 switched conductive earpiece side
Analogue signal transmission channel state under, the internal MIC chip comprised of earphone needs end side
MIC biasing voltage signal is provided.Such as, real by TYPE-C interface with mobile phone side in earpiece side
When existing physical interface connects, the 3rd transmission port 7 of earpiece side and the MICbias (MIC of mobile phone side
Bias voltage) signal output part docking, using by MICbias signal as power supply signal, earpiece side
The 3rd transmission port 7 after being plugged into TYPE-C interface, corresponding ports can be TYPE-C
(SBU1) A8 of interface or (SBU2) B8 port (according to just inserting and depending on anti-plug situation).
Switch control module 6 transmits the signal of port 7 according to the first switch controlling signal and the 3rd,
The state of the first switching switch 1 is switched over control.Specifically, when switch controlling signal and
When the signal of three transmission ports 7 is high level, the state of the first switching switch 1 is made to be in second
State, otherwise makes the state of the first switching switch 1 be in the first state.
In TYPE-C interface, CC1 (A5)/CC2 (B5) port transmission can be used to control letter
Number.The present embodiment, the second transmission port 5 is CC1 (A5)/CC2 in connection TYPE-C interface
(B5) port that port is corresponding.But the multiplexing end that the two port is mobile phone side output control signal
Mouthful, in order to confirm that mobile phone side is switch controlling signal by the control signal that this port exports, it is ensured that
The switch motion that first switching switch 1 enforcement is correct, the first switch control module 6 judges to open simultaneously
Close control signal (signal of the second transmission port) and MIC biasing voltage signal, open
Close control signal.
The embodiment of the present invention provide switching device, its be built in terminal from equipment, by come
From the second transmission port 5 switch controlling signal and the signal of the 3rd transmission port 7, to the first switching
The state of switch switches over control, it is ensured that controls the first switching switch 1 and is in correct status.
Embodiment three
Switching device the 3rd embodiment from equipment side that Fig. 3 provides for the embodiment of the present invention
Structural representation.As it is shown on figure 3, on the basis of entire infrastructure shown in Fig. 1 or Fig. 2,
This switching device also includes:
First analog-to-digital conversion module 8, is connected with the MIC signal output part of MIC chip, and passes through
Internal bus is connected with first interface module 2, for believing the MIC from MIC signal output part
Number carry out analog digital conversion, and be sent to first interface module 2 (such as usb protocol modular converter).
Meanwhile, the 3rd transmission port 7 output MIC biasing voltage signal outfan also with MIC chip
Power input connects, for providing MIC biasing voltage signal to MIC chip.Wherein, internal
Bus can be iic bus.
Further, as it is shown on figure 3, above-mentioned analogue signal playing device 3 is audio-frequence player device,
Such as speaker.This audio-frequence player device includes: left audio playing module and right audio channel are broadcast
Amplification module.Corresponding, above-mentioned first analogue signal transmission ends includes: play mould with left audio
Left channel analog audio signal input that block connects and the right side that is connected with right audio channel playing module
Channel analog audio signals input, can receive the left side that earpiece side obtains from the first transmission port respectively
Channel analog audio signals (simulation L) and right channel analog audio signal (simulation R).Additionally,
It should be noted that be originally in embodiment, the first switching switch 1 is shown as two hilted broadswords pair and puts
The combination (two double switches of putting of hilted broadsword are linkages) of switch, the mould of two sound channels about correspondence respectively
Intend transmission channel, two ways of digital signals transmission channel (the such as USB of first interface module 2 correspondence
Differential signaling paths) and the two-way digital-to-analog transmission channel (example of the first transmission port 4
Dp and Dn such as TYPE-C interface).
Further, above-mentioned switching device also includes: the first D/A converter module 9, with L channel mould
Intend audio signal input end, right channel analog audio signal input connects, and passes through internal bus
As iic bus is connected with first interface module 2, for the second number from first interface module 2
Word signal carries out digital-to-analogue conversion, and is sent to left audio playing module and right audio channel broadcasting
Module plays out.
Wherein, the second digital signal can be considered that the first digital signal is connect by first interface module 2
After port communications protocol conversion, can be by the digital signal of digital-to-analogue conversion.
It addition, above-mentioned first analog-to-digital conversion module 8 and the first D/A converter module 9 by possess digital-to-analogue/
The module of analog-digital conversion function realizes, and (one has digital-to-analogue and modulus to such as CODEC chip
The chip of translation function).
The switching device that the embodiment of the present invention provides, its be built in terminal from equipment, by the
MIC signal is converted to digital signal by one analog-to-digital conversion module, and is transmitted by digital transmission path
To mobile phone side, second simultaneously will obtained by digital transmission path by the first D/A converter module
Digital signal is play by analogue signal playing device after digital-to-analogue conversion.
Embodiment four
First embodiment of switching device of the end side that Fig. 4 provides for the embodiment of the present invention
Structural representation, this switching device can be integrated in from the terminal that equipment is corresponding, in this terminal
It is provided with digital transmission path and analogue transmission path, as having digital simulation transmission channel
Mobile phone..
The switching device of the present embodiment may include that and includes the second switching switch, and the second switching is opened
Close and the 4th transmission port, the second analog channel and the second number for transmitting digital/analog signal
Word path connects, and the second switching switch for transmitting the signal of port at the second analog channel by the 4th
With second switch between digital channel.Further, the second switching switch can also be with central authorities
Processor connects, and the second switch control signal for sending according to central processing unit performs switching behaviour
Make.Further, central processing unit is also connected with the 5th transmission port, for passing by the 5th
Defeated port outwards exports second switch control signal.
The structure of the switching device of the present embodiment is further illustrated, such as Fig. 4 below in conjunction with Fig. 4
Shown in, this switching device may include that be positioned in terminal second switching switch 10 (it is permissible
The double switch of putting of hilted broadsword is used to realize), this second switching switch 10 is by the second digital channel and second
Second digital data transmission end of interface module 11, by the second analog channel and analog signal output
Second analogue signal transmission ends of device 12, also with the 4th transmission for transmitting digital/analog signal
Port 13 connects, and the 4th transmission port 13 and the first transmission port 4 have corresponding relation, at end
End with is connected from equipment after, the 4th transmission port 13 with first transmit port 4 will corresponding connection,
Second interface module 11 is for carrying out the conversion of interface communications protocol.
Second switching switch 10 can have a following state:
The third state (digital state): the second digital data transmission end and the 4th transmission port 13 connect
Logical, the second analogue signal transmission ends disconnects with the 4th transmission port 13；
4th state (emulation mode): the second analogue signal transmission ends connects with the 4th transmission port 13
Logical, the second digital data transmission end and the 4th transmission port 13 disconnect；
Second switching switch 10 can be according to the on-off control letter of the central processing unit 14 carrying out self terminal
Number, carry out state switching.
Second interface module 11 can carry out interface by the digital signal of each functional module output in opponent's pusher side
Communication Protocol Conversion, generation meets the 4th transmission port 13 can support that the second digital signal of transmission (can
To comprise data, control command etc.) transmit to from equipment；Or receive from the 4th transmission port 13
From the second digital signal of equipment side output, and after changing by interface communications protocol, generation mobile phone
The discernible digital signal in side, so that mobile phone side carries out subsequent treatment.
Specifically, analog signal output device 12 can with the analog-digital chip of mobile phone side or other
Can directly export the device of the analogue signal that can be used in broadcasting.Here, the 4th transmission port
13 complete physics with the port (above-mentioned first transmission port 4) docked between the port of mobile phone side
After port grafting, between itself and mobile phone terminal, both can pass digital signal, again can with transmission of analogue signal,
And the most specifically transmit digital signal or analogue signal, need to be by the second switching switch 10
Control.
Specifically, the second switching switch 10 also can obtain from the central processing unit 14 being positioned at mobile phone side
Control the second switch control signal of the second switching switch 10 states.
Several switching devices that the embodiment of the present invention provides, it is built in terminal, such as, in terminal.
This switching device is by building on digital simulation transmission channel, by from end by the second switching switch
The switch controlling signal that the central processing unit of end receives carries out the switching of digital simulation transmission channel,
So that from the changeable transmission carrying out digital and analog signaling between equipment and terminal.
Embodiment five
Second embodiment of switching device of the end side that Fig. 5 provides for the embodiment of the present invention
Structural representation.As it is shown in figure 5, on the basis of entire infrastructure shown in Fig. 4, the second switching
The second switch controlling end and the 5th transmission port 15 and central processing unit 14 of switch 10 controls
Signal output port connects, and the 5th transmission port 15 is corresponding, from equipment with the second transmission port 5
After being connected with terminal, the 5th transmission port 15 will corresponding connect with the second transmission port 5, central authorities
Second switch control signal is sent the control end and the 5th to the second switching switch 10 by processor 14
Transmission port 15, and then second switch control signal is transmitted to from setting by the second transmission port 5
Standby and as the first switch controlling signal, the first above-mentioned switching switch 1 is controlled, this
In the case of, second switch control signal and the first switch controlling signal are actually identical signal.
Further, will corresponding be connected with the second transmission port 5 by the 5th transmission port 15,
First switching switch 1 and the second switching switch 10 can have a following interaction relation:
When the first switching switch 1 is in the first state, the second switching switch 10 is in the third state；
When the first switching switch 1 is in the second state, the second switching switch 10 is in the 4th state.
Specifically, the 5th transmission port 15 can be the CC1 (A5) and CC2 of TYPE-C interface
(B5) port, this port is corresponding, for earphone with the second of above-mentioned earpiece side the transmission port 5
Side transmitting switch control signal.Due to central processing unit 14 simultaneously to the first switching switch 1 and second
Switching switch 2 sends switching signal, it is possible to control earpiece side and the terminal at TYPE-C interface two ends
It is also turned on numeral transmission channel inside side and carries out digital signal communication, or connect analogue transmission path
Simulation signal communicates, it is ensured that the concordance of the type of transmission signal.
Further, above-mentioned analog signal output device 12 is the second D/A converter module, for right
The digital signal of the central processing unit 14 carrying out self terminal carries out digital-to-analogue conversion, generates above-mentioned second simulation
Signal, and export to the 4th transmission port 13.
Further, above-mentioned second interface module 11 also can be to the central processing unit 14 carrying out self terminal
Digital signal carry out the conversion of interface communications protocol, generate and meet the 4th transmission port 13 transmission
Second digital signal, and hold earpiece side by the 4th transmission port 13 output.
Further, above-mentioned interface communications protocol is TYPE-C interface communications protocol.
Further, above-mentioned TYPE-C interface communications protocol is USB interface communication protocol.
Further, above-mentioned first transmission port 4 is Dp and the Dn port with TYPE-C interface
Corresponding port.
Further, above-mentioned second transmission port 5 is and CC1 or CC2 pair of TYPE-C interface
The port answered.
Further, above-mentioned 3rd transmission port 7 is and SBU1 or SBU2 of TYPE-C interface
Corresponding port.
Further, above-mentioned 4th transmission port 13 is Dp and the Dn port of TYPE-C interface.
Further, above-mentioned 5th transmission port is CC1 and the CC2 port of TYPE-C interface.
The switching device that the embodiment of the present invention provides, it is built in terminal, will be from end side central authorities
The switch controlling signal that processor obtains is simultaneously transmit to the first switching switch and the second switching switch,
Thus ensure the linkage of two on off states.
Embodiment six
The numerical model analysis earphone based on TYPE-C interface that Fig. 6 provides for the embodiment of the present invention
One of frame diagram of data transmission and control circuit, the present embodiment will connect based on TYPE-C interface
Earphone and the most complete circuit structure of mobile phone side further illustrate cutting of the embodiment of the present invention
Changing device.Before frame structure Fig. 6 shown in is discussed in detail, first believe between earphone and mobile phone
Number transmission is briefly described.
In embodiments of the present invention, between earpiece side and mobile phone side, the main signal of transmission exists for needs
The MIC signal that the audio signal of left and right acoustic channels of earpiece side broadcasting, earpiece side gather；Wherein, left
The audio signal of R channel is mainly the transmission of mobile phone lateral earpiece side, and MIC signal is mainly earpiece side
Transmit to mobile phone side.It addition, in TYPE-C interface, Dp, Dn port itself may be used for transmission
Meet the digital difference signal of USB transport protocol, it is also possible to be used for transmitting left and right sound track signals.Under
In the face of the frame structure of Fig. 6 is further detailed.
Fig. 6 is data transmission and the control circuit frame of numerical model analysis earphone based on TYPE-C interface
Frame figure.This figure includes TYPE-C interface, is positioned at the earpiece side circuit on the left of TYPE-C interface
With the mobile phone lateral circuit being positioned on the right side of TYPE-C interface.Each several part circuit knot will be introduced respectively below
Structure.
1) structure of mobile phone side
Mobile phone side includes: CPU, can send control to being built in various control circuits or interface in mobile phone
System order and to carry out data signal mutual；Usb interface module, with CPU and TYPE-C interface
Connect；The path that CPU, usb interface module and TYPE-C interface are formed constitutes mobile phone side
Digital channel, meet the USB of usb protocol for being converted into by the digital signal that CPU exports
Differential signal, and exported to earpiece side by Dp, Dn port on TYPE-C interface, or,
Met the USB of usb protocol from earpiece side reception by Dp, Dn port on TYPE-C interface
Differential signal also inputs to CPU, thus realizes digital earphone path in mobile phone side, at this numeral ear
Machine path both can transmit digital sound tracks signal, it is possible to the MIC signal of transmission numeral.Need explanation
, in the case of digital state, USB interface is mainly passed through in the communication of earpiece side and mobile phone side
Module interacts, and the signal content that the lateral earpiece side of mobile phone sends is mainly digital audio and video signals,
Earpiece side is play by earphone speaker after carrying out digital-to-analogue conversion, the letter that earphone lateral mobile phone side sends
Number content is mainly the MIC signal after earpiece side analog digital conversion.
Mobile phone side also includes: CODEC chip (a kind of chip with digital-to-analogue, analog-digital conversion function),
It is connected with CPU and TYPE-C interface；CPU, CODEC chip and TYPE-C interface shape
The path become constitutes the simulation earphone path of mobile phone side, for the digital signal warp exported by CPU
Become analogue signal after crossing CODEC chip digital-to-analogue conversion, and by the Dp on TYPE-C interface,
Dn port exports to earpiece side, thus realizes simulation earphone path in mobile phone side, at this simulation earphone
Path can transmit simulation sound channel signal.
The CODEC chip of mobile phone side also directly and (SBU1) A8 of TYPE-C interface and
(SBU2) B8 port connects, for directly obtaining simulation at MIC chip from earpiece side
MIC signal and to earpiece side MIC chip provide inclined as the MIC of the power supply of MIC chip
Putting voltage signal, wherein, (SBU1) A8 and which port of (SBU2) B8 are used for receiving MIC
Which port of signal depends on the positive anti-plug shape of earphone for providing MCI biasing voltage signal to need
State, i.e. after determining the positive anti-plug situation of earphone, just may determine that MIC chip in earphone
Power end and MIC signal output part have been connected respectively in (SBU1) A8 and (SBU2) B8
Which port on, control CODEC the most again and himself port function is arranged carry out correspondence
Adjust.As the optional mode of one, it is also possible to the TYPE-C inserting mobile phone at earphone connects
After Kou, control CODEC and send MIC biasing respectively to (SBU1) A8 and (SBU2) B8
Voltage signal, then receives signal, thus detects power end and the MIC of MIC chip from another road
Signal output part and (SBU1) A8 and the connection status of (SBU2) B8, so that it is determined that correspondence
Connecting path, then, controls CODEC and the port function setting of himself is carried out corresponding adjustment.
By foregoing circuit structure, it is achieved be used for transmitting simulation MIC signal and MIC bias voltage letter
Number analog signal channel.
Can draw from figure, due to the MIC letter of mobile phone side transmission digital sound tracks signal and numeral
Number path with transmission simulation channel signal path shared Dp, Dn end on TYPE-C interface
Mouthful, therefore, add simulation digital switch in mobile phone side, can realize two signal paths
Switching.
2) frame structure of earpiece side:
Earpiece side includes: (one has digital-to-analogue and mould for MIC chip, speaker, CODEC chip
The chip of number conversion function) and usb interface module；Wherein, CODEC chip (digital-to-analogue or mould
Number conversion chip), usb interface module and TYPE-C interface be sequentially connected with, MIC chip, raise
Sound device, to constitute the digital signal path of earpiece side.On this digital signal path, USB interface
Module obtains digital audio and video signals also by Dp, Dn port on TYPE-C interface from mobile phone side
Simulated audio signal is converted to, finally by the left and right acoustic channels end of speaker through CODEC chip
Mouth plays out；It addition, MIC signal is after CODEC chip is converted to digital signal, depend on
Secondary Dp, Dn port by usb interface module and TYPE-C interface exports to mobile phone side.
Speaker is also directly connected to Dp, Dn port on TYPE-C interface, thus constitutes ear
The analog signal channel of pusher side, i.e. speaker Dp, Dn port from TYPE-C interface is direct
Obtain the simulated audio signal of mobile phone side output, and play out.
After earphone and mobile phone grafting, the power end of MIC signal output part and MIC chip also with
(SBU1) A8 on TYPE-C interface or (SBU2) B8 connects that (concrete connected mode, takes
Certainly in the situation of positive anti-plug), under simulation earphone state, by direct for the MIC signal of simulation
Export to mobile phone side and obtain the MIC biasing voltage signal as power supply signal from mobile phone side.
Can draw from figure, owing to earpiece side receives digital sound tracks signal and exports numeral
MIC signal path has shared Dp, the Dn on TYPE-C interface with receiving simulation channel signal path
Port, therefore, adds simulation digital switch in earpiece side, can realize leading to two signals
The switching on road.It should be noted that the simulation numeral switching of earpiece side and the simulation switching of mobile phone side
It is initially what synchronization switched over, to ensure the docking that analog or digital is gone the same way.The simulation of earpiece side
Digital switch can directly receive the control signal of mobile phone side by the port of TYPE-C interface
Perform switching action, for example, it is possible to passed by CC1 or the CC2 port of TYPE-C interface
Defeated control signal.
Switching device shown in the present embodiment in the earpiece side of embodiment illustrated in fig. 6 and mobile phone side, its
In, it should be noted that in mobile phone side, each port of TYPE-C interface all with the core in mobile phone
Sheet or CPU connect, and as earphone etc. from equipment, only use the part in TYPE-C interface
Port, therefore, the connection interface on earphone can essentially think not to be complete, it is only necessary to
Meet physically can grafting with the TYPE-C interface on mobile phone.For example, it is possible to
In design, only retain several connectivity port (or physical pin) used, and other take less than
Port can get rid of.It is of course also possible to use the physical aspect of complete TYPE-C interface,
Section ports is wherein had to be in the state of being not used by, in this case, the TYPE-C of mobile phone side
Interface can make female degree of lip-rounding state, and the TYPE-C interface of earpiece side can make public degree of lip-rounding state.
In view of the foregoing, in embodiments of the present invention, during describing, by complete
TYPE-C interface is described as being incorporated into the parts of mobile phone side, and the port for earpiece side simply describes
The function of this port and and the TYPE-C interface of mobile phone side in the corresponding relation of each port,
I.e. it is not intended to earphone etc. from the physical interface form of equipment.
Specifically, the first switching switch 1 is corresponding to the simulation digital switch of earpiece side；First
Interface module 2 is corresponding to the usb interface module of earpiece side；Analogue signal playing device 3 corresponds to
The speaker of earpiece side；First transmission port 4 is corresponding to Dp, Dn end on TYPE-C interface
Mouthful；Second transmission port 5 is corresponding to earpiece side and CC1, CC2 port on TYPE-C interface
The corresponding port connected；First switch control module 6 is corresponding to the switch controller of earpiece side；The
Three transmission ports 7 are corresponding to (SBU1) A8 on TYPE-C interface or (SBU2) B8 port
(corresponding specifically to transmit the port of MIC biasing voltage signal)；First analog-to-digital conversion module 8 He
The function of the first D/A converter module 9 completes in the CODEC chip of earpiece side；Second switching
Switch 10 is corresponding to the simulation digital switch of mobile phone side；Second interface module 11 is corresponding to hands
The usb interface module of pusher side；The function of analog signal output device 12 is at the CODEC of mobile phone side
Chip completes；4th transmission port 13 corresponding to the Dp on the TYPE-C interface of mobile phone side,
Dn port, central processing unit 14 are corresponding to CPU；5th transmission port 15 is corresponding to mobile phone side
CC1, CC2 port on TYPE-C interface.
It follows that the data transmission procedure of earphone under digital state, emulation mode will be described separately.
Under digital state, by the above-mentioned digital signal path of TYPE-C interface both sides from mobile phone
Side joint receives digital audio and video signals, and is converted into analogue audio frequency letter by the CODEC chip of earpiece side
After number, played out by speaker；Meanwhile, the MIC signal of MIC chip output is by this number
After word signal path is converted into digital signal by CODEC chip, then entered by usb interface module
After the conversion of row usb protocol, by Dp and the Dn port transmission of TYPE-C interface to mobile phone side.
Under emulation mode, by the above-mentioned analog signal channel of TYPE-C interface both sides from mobile phone
Side joint receives simulated audio signal, and is directly play by speaker；Meanwhile, MIC chip exports
MIC signal is directly by (SBU1) A8 or (SBU2) B8 of TYPE-C interface
Individual port is sent to mobile phone side, and another port can serve as under emulation mode lateral from mobile phone
MIC chip transmission MICbias signal, this signal will pass as the MIC power supply of MIC chip
Transport to the power port of MIC chip, and under digital state, by the CODEC chip of earpiece side
MICbias signal is provided to MIC chip.
About above-mentioned digital state and the switching of emulation mode, the simulation digital switch of mobile phone side
Can be directly by CPU control, specifically, the simulation digital switch of mobile phone side passes through GPIO
(General Purpose Input Output, universal input/output) is connected with CPU, receives and controls
Signal.The CPU of mobile phone side can also be connected with CC1, CC2 port of TYPCEC interface,
Thus send control signal to the simulation digital switch of earpiece side.Correspondingly, the opening of earpiece side
Gateway controller can receive control signal by CC1, CC2 port, and also can obtain (SBU1)
The signal of the signal (port being connected with MIC chip power end) of A8 and (SBU2) B8 port,
The state of the simulation digital switch of earpiece side is determined according to two paths of signals here, right to realize
The state of earpiece side simulation digital switch controls.
Additionally, the CPU of mobile phone side so that the control signal that sends to CC1, CC2 port with
The control signal sent to the simulation digital switch of mobile phone side keeps synchronous regime, thus ensures
It intends the state consistency of digital switch with mobile phone side form, be i.e. also turned on numeral signal path or
Analog signal channel.Alternatively, it is also possible to by the road GPIO drawn from CPU
Connect the simulation digital switch of CC1, CC2 port and mobile phone side respectively, thus realize hands
The state consistency of the simulation digital switch of pusher side and earpiece side.
Embodiment seven
The data transmission of the numerical model analysis earphone based on TYPE-C interface that Fig. 7 provides for the present invention
And the two of the frame diagram of control circuit.As it is shown in fig. 7, with the framework described by above-described embodiment six
Difference is, have employed the output of MIC signal and the input of MIC power supply shares a MIC core
The circuit structure of the port of sheet, specifically, can be by the power supply of the MIC chip of MIC Signal averaging
Export on end.So, for MIC chip, the power end of only MIC chip and
The earth terminal of MCI chip needs and TYPE-C interface connects.Insert on mobile phone at earphone
After TYPE-C interface, the power end of MIC chip and one of (SBU1) A8 and (SBU2) B8
Corresponding connection, for transmitting MIC signal and MICbias signal under emulation mode.MIC chip
Earth terminal and another in (SBU1) A8 and (SBU2) B8 is corresponding connects.
Accordingly, the circuit structure of the CODEC chip circumference of mobile phone side is also varied from,
CODEC chip uses three ports to be used as the process of MIC signal, and one of them port is for defeated
Go out MICbias signal, two other port (being designated MIC+ and MIC-in figure) and (SBU1)
A8 and (SBU2) B8 connects respectively, is used for receiving MIC signal.For exporting MICbias
The port of signal is connected with (SBU1) A8 and (SBU2) B8 the most respectively by resistance, and passes through
(SBU1) A8 or (SBU2) B8 transmits MICbias signal to earpiece side.
Based on foregoing circuit structure, no matter earphone is just to insert or anti-plug, the CODEC of mobile phone side
MIC+ and MIC-of chip will necessarily detect that a road is ground, and a road is for being mixed with MICbias letter
Number MIC signal, CODEC chip has only to carry out difference processing and is obtained with MIC signal,
And without comprehending the ground which road connects, the MIC signal output part which road connects.And due to
CODEC chip, as stable level signal, also will not be read MIC by MICbias code book
The information that signal is carried impacts.
Additionally, Fig. 7 also add the port status to CC1 and CC2 carry out logical judgment
CClogic module, this module can be by reading the state of the resistance value of the port of CC1 and CC2
Judge the character from equipment, and report CPU.Such as, can be sentenced by CClogic module
Break and earphone there is the equipment of digital function or pure simulator.
Additionally, share a MIC core for above-mentioned MIC signal output and the input of MIC power supply
The circuit structure of the port of sheet can as shown in Figure 8, and wherein, the vdd terminal in Fig. 8 is MIC
The DC supply input of chip, OUT1 is MIC signal output part, by increasing at OUT1 end
If such as the circuit structure in Fig. 8, (filter circuit that the 3rd resistance and capacity cell are constituted, is used for filtering
Signal in addition to sound frequency, and alternating current path can be formed), it is possible to formed at OUT1 end and hand over
Circulation flow path, thus utilize the short characteristic of the void of the operational amplifier in MIC chip, by MIC signal
The vdd terminal that is added to exports.Wherein, the first resistance be equivalent in Fig. 7 CODEC chip for
The resistance being connected between MICbias output port and MIC+ and MIC-, OUT2 then with hands in Fig. 7
MIC+ and MIC-of pusher side CODEC chip connects, and the DC source in Fig. 8 corresponds to CODEC
The MICbias signal of chip output.The 3rd resistance in Fig. 8 is mainly used in regulating the MIC of superposition
The DC point of the AC signal on the DC supply input of chip.
Embodiment eight
The present embodiment relates to a kind of switched system, and this switched system includes being arranged in the first equipment
First switching switch and the second switching switch being arranged in the second equipment, wherein, first here
Equipment can be in the various embodiments described above from equipment (such as digital-to-analog mixing earphone), second sets
Standby can be the terminal (such as mobile phone) in the various embodiments described above.
It is separately provided for transmitting the first biography of digital/analog signal on first equipment and the second equipment
Defeated port and the 4th transmission port, wherein, the first transmission port and the 4th transmission port correspondence connect.
First switching switch is used for the first simulation transmitting the signal of port by first in the first equipment
Switch between path and the first digital channel.
Second switching switch is used for the second simulation transmitting the signal of port by the 4th in the second equipment
Switch between path and the second digital channel.
In above-mentioned switched system, by the first equipment and the second equipment first switching switch and
The compounding practice of the second switching switch, can set up between the first equipment and the second equipment digital or
Person simulation signal path, such that it is able to the simulation realized between the first equipment and the second equipment and
The switching of path, such that it is able to switch the first equipment and the duty of the second equipment neatly, i.e.
Simulation duty and numeral duty.
Further, in the first equipment, the first switching switchs and is used for transmission the first on-off control
Second transmission port of signal connects, and the first switching switch is according to from the first of the second transmission port
Switch controlling signal, performs handover operation.Accordingly, in the second equipment, the second switching is opened
Closing and be connected with the central processing unit of the second equipment, the second switching switch is for sending out according to central processing unit
The second switch control signal gone out performs handover operation.
The first above-mentioned switch controlling signal and second switch control signal can be opening of two-way independence
Closing control signal, but, the most preferably, arranging the second transmission port on the first device can
To be connected with the 5th transmission port arranged on the second device, the 5th transmission port processes with central authorities
Device connect, for first equipment output second switch control signal, the first switch controlling signal and
Second switch control signal is identical signal.That is, the first switching switch is logical with the second switching switch
Cross same switch controlling signal to be controlled such that it is able to keep the first switching switch to cut with second
Change the synchronism switching between switch and linkage.
Additionally, the switched system of the present embodiment first opening of can also including arranging on the first device
Close control module, the first switch control module and the first switching to switch, be used for transmitting MIC biased electrical
3rd transmission port and the second transmission port of pressure signal connect, and the first switch control module is used
According to the first switch controlling signal and the signal of the 3rd transmission port, the first switching switch is entered
Row handover operation.
Further, this handover operation may include that
When the signal of the first switch controlling signal and the 3rd transmission port is high level, make first
Analog channel and the first transmission port conducting, the second analog channel and the 4th transmission port, otherwise,
Make the first digital channel and the first transmission port conducting, the second digital channel and the 4th transmission port.
It addition, in the first equipment, the first switching switch can pass through the first digital channel and setting
First interface module on the first device connects, the first switching switch by the first analog channel with
Arranging analogue signal playing device on the first device to connect, first interface module is used for connecing
The conversion of port communications agreement.Wherein, this analogue signal playing device can be audio-frequence player device,
Such as earphone.
Correspondingly, in the second equipment, the second switching switch can pass through the second digital channel and set
The the second digital data transmission end putting the second interface module on the second device connects, the second switching
Switch and connected by the second analogue signal transmission ends of the second analog channel with analog signal output device
Connecing, the second interface module carries out the conversion of interface communications protocol.Wherein, analog signal output device
Can being the second D/A converter module, generating simulation for digital audio and video signals being carried out digital-to-analogue conversion
Audio signal, and exported by the 4th transmission port.
It addition, above-mentioned first equipment and the second equipment can be connected by TYPE-C interface, accordingly
Ground, above-mentioned interface communications protocol is TYPE-C interface communications protocol, is specifically as follows USB and connects
Port communications agreement.In the first equipment, above-mentioned first transmission port can be specially and TYPE-C
The port that Dp with the Dn port of interface is corresponding, correspondingly, in the second equipment, the 4th transmission ends
Mouth can be specially Dp and the Dn port of TYPE-C interface.In the first equipment, the second transmission
Port can be specially the port corresponding with CC1 or CC2 of TYPE-C interface.At the second equipment
In, the 5th transmission port can be CC1 and the CC2 port of TYPE-C interface.Additionally,
In one equipment, the 3rd transmission port can be specially and SBU1 or SBU2 of TYPE-C interface
Corresponding port.
In sum, by switching device or the switched system of each embodiment above-mentioned, it is possible to logical
Cross the first switching switch and second and switch being linked of switch, flexibly switching digital channel and mould
Intend path, thus for terminal and be connected the selection providing multiple-working mode from equipment with terminal,
Hardware foundation is provided for terminal and the application extension from equipment.
Such as, for the numerical model analysis earphone that can support figure pattern and simulation model, can
When having call to enter or breathing out, earphone and mobile phone are all switched to simulation duty, build
Vertical analog channel such that it is able to obtain situation of preferably conversing, and when listening music, can switch
For digital operation mode, set up digital channel, thus more preferable result of broadcast is provided.Additionally, also
Can apply from power and energy saving angle, for general digital earphone, owing to mobile phone can be by ear
Machine is identified as the slave of USB, therefore, meeting this earphone of periodic wakeup, thus causes hands
Machine power consumption is relatively big, and scheme based on the embodiment of the present invention, can cut in due course
Be changed to simulate duty, such as, after user inserts an earphone in mobile phone, acquiescence can be number
Word duty, when not using earphone in the most excessive user's a period of time, can automatically switch to mould
Intend duty such that it is able to more save the electricity of mobile phone.
One of ordinary skill in the art will appreciate that: realize the whole of above-mentioned each method embodiment
Or part steps can be completed by the hardware that programmed instruction is relevant.Aforesaid program is permissible
It is stored in a computer read/write memory medium.This program upon execution, performs to include
State the step of each method embodiment；And aforesaid storage medium includes: ROM, RAM, magnetic
The various medium that can store program code such as dish or CD.
It is last it is noted that various embodiments above is only in order to illustrate technical scheme,
It is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments,
It will be understood by those within the art that: foregoing embodiments still can be remembered by it
The technical scheme carried is modified, or carries out the most some or all of technical characteristic
With replacing；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this
Invent the scope of each embodiment technical scheme.
Claims (22)
1. a switching device, it is characterised in that include the second switching switch (10), described the
Two switching switch (10) with for transmit digital/analog signal the 4th transmission port (13), second
Analog channel and the second digital channel connect, and described second switching switch (10) is for by described
The signal of the 4th transmission port (13) is cut between the second analog channel and the second digital channel
Change.
Switching device the most according to claim 1, it is characterised in that described second switching is opened
Closing (10) to be also connected with central processing unit, second for sending according to described central processing unit opens
Close control signal and perform handover operation.
Switching device the most according to claim 2, it is characterised in that,
Described second switching switch (10) is by described second digital channel and the second interface module (11)
The second digital data transmission end connect, described second switching switch (10) is by described second mould
Intend path to be connected with the second analogue signal transmission ends of analog signal output device (12), described the
Two interface modules (11) carry out the conversion of interface communications protocol.
Switching device the most according to claim 2, it is characterised in that described second switching is opened
Close (10) and there is following state:
The third state: turn on described second digital data transmission end and described 4th transmission port (13),
Disconnect described second analogue signal transmission ends and described 4th transmission port (13)；
4th state: turn on described second analogue signal transmission ends and described 4th transmission port (13),
Disconnect described second digital data transmission end and described 4th transmission port (13)；
Described second switching switch (10) is according to opening from the second of described central processing unit (14)
Close control signal, switch between the described third state and described 4th state.
Switching device the most according to claim 3, it is characterised in that
The described second switching switch control end of (10) and the 5th transmission port (15) and described
The second switch control signal output port of central processing unit (14) connects, described central processing unit
(14) described second switch control signal is sent the control to described second switching switch (10)
End and described 5th transmission port (15), described 5th transmission port (15) is for outwards output the
Two switch controlling signals.
Switching device the most according to claim 1, it is characterised in that described analogue signal is defeated
Going out device (12) is the second D/A converter module, for the central processing unit from described terminal
(14) digital audio and video signals carries out digital-to-analogue conversion and generates simulated audio signal, and by described the
Four transmission port (13) outputs.
Switching device the most according to claim 3, it is characterised in that described second switching is opened
Close (10) to be positioned in terminal,
Described switching device also includes that be arranged on the slave being connected with described terminal first cuts
Change switch (1), be connected with the first transmission port (4) being used for transmitting digital/analog signal, and lead to
Cross the first digital signal biography of the first digital channel and described first interface module (2) from equipment
Defeated end connects, by the first analog channel and described analogue signal playing device (3) from equipment
First analogue signal transmission ends connect, described first transmission port (4) with described 4th transmission ends
Mouth (13) is corresponding to be connected, and described first interface module (2) is for carrying out turning of interface communications protocol
Changing, described first switching switch (1) for transmitting the signal of port (4) in institute by described first
State and switch between the first analog channel and described first digital channel.
Switching device the most according to claim 7, it is characterised in that described first switching is opened
Close and be also connected with the second transmission port (5) for transmission the first switch controlling signal, described first
Switching switch, according to the first switch controlling signal from described second transmission port (5), carries out shape
State switches.
Switching device the most according to claim 8, it is characterised in that described first switching is opened
Close (1) and there is following state:
First state: turn on described first digital data transmission end and described first transmission port (4),
Disconnect described first analogue signal transmission ends and described first transmission port (4)；
Second state: turn on described first analogue signal transmission ends and described first transmission port (4),
Disconnect described first digital data transmission end and described first transmission port (4).
Switching device the most according to claim 8, it is characterised in that also include being arranged on
Described the first switch control module (6) from equipment, described first switch control module (6) with
Described first switching switchs (1), for transmitting the 3rd transmission port (7) of MIC biasing voltage signal
And described second transmission port (5) connect,
Described first switch control module (6), for according to described first switch controlling signal and institute
State the signal of the 3rd transmission port (7), the state of described first switching switch (1) is cut
Change control.
11. switching devices according to claim 10, it is characterised in that described in described basis
First switch controlling signal and the signal of described 3rd transmission port (7), open described first switching
The state of pass (1) switches over control and includes:
When the signal of described first switch controlling signal and described 3rd transmission port (7) is high electricity
At ordinary times, make the state of described first switching switch (1) be in the second state, otherwise make described first
The state of switching switch (1) is in the first state.
12. switching devices according to claim 10, it is characterised in that also include: arrange
The first analog-to-digital conversion module (8) in a slave device, exports with the MIC signal of described MIC chip
End connects, and is connected with described first interface module (2) by internal bus, be used for from
The MIC signal of MIC signal output part carries out analog digital conversion, and is sent to described first interface module
(2)。
13. switching devices according to claim 7, it is characterised in that described analogue signal
Playing device (3) is audio-frequence player device.
14. switching devices according to claim 13, it is characterised in that
Described audio-frequence player device includes: left audio playing module and right audio channel play mould
Block, described first analogue signal transmission ends includes: left channel analog audio signal input and right sound
Road simulated audio signal input, described left audio playing module and described left channel analog sound
Frequently signal input part connects, and described right audio channel playing module is believed with described right analog audio
Number input connects.
15. switching devices according to claim 14, it is characterised in that
Described switching device also includes the first D/A converter module (9) arranged in a slave device, with
Described left channel analog audio signal input, described right channel analog audio signal input connect,
And be connected with described first interface module (2) by internal bus, for connecing from described first
Second digital signal of mouth die block (2) carries out digital-to-analogue conversion, and is sent to left audio broadcasting mould
Block and right audio channel playing module play out.
16. according to the switching device described in claim 3 or 7, it is characterised in that
Described interface communications protocol is TYPE-C interface communications protocol.
17. switching devices according to claim 16, it is characterised in that
Described TYPE-C interface communications protocol is USB interface communication protocol.
18. switching devices according to claim 7, it is characterised in that
Described first transmission port (4) is corresponding with Dp and the Dn port of TYPE-C interface
Port.
19. switching devices according to claim 8, it is characterised in that
Described second transmission port (5) is corresponding with CC1 or CC2 of described TYPE-C interface
Port.
20. switching devices according to claim 10, it is characterised in that
Described 3rd transmission port (7) is and SBU1 or SBU2 pair of described TYPE-C interface
The port answered.
21. switching devices according to claim 1, it is characterised in that
Described 4th transmission port (13) is Dp and the Dn port of TYPE-C interface.
22. switching devices according to claim 5, it is characterised in that
Described 5th transmission port (15) is CC1 and the CC2 port of TYPE-C interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249196.7A CN105872900A (en) | 2016-04-20 | 2016-04-20 | Switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249196.7A CN105872900A (en) | 2016-04-20 | 2016-04-20 | Switching device |
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| CN105872900A true CN105872900A (en) | 2016-08-17 |
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| CN201610249196.7A Pending CN105872900A (en) | 2016-04-20 | 2016-04-20 | Switching device |
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| CN110783777A (en) * | 2018-07-12 | 2020-02-11 | 中兴通讯股份有限公司 | Anti-interference method, device and system |
| CN113778921A (en) * | 2020-06-10 | 2021-12-10 | 成都鼎桥通信技术有限公司 | USB data line switching control circuit and method |
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Application publication date: 20160817 |