CN107506322A - Realize Type C adapters, the passage control method of USB device detection - Google Patents
Realize Type C adapters, the passage control method of USB device detection Download PDFInfo
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- CN107506322A CN107506322A CN201710860181.9A CN201710860181A CN107506322A CN 107506322 A CN107506322 A CN 107506322A CN 201710860181 A CN201710860181 A CN 201710860181A CN 107506322 A CN107506322 A CN 107506322A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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Abstract
The embodiment of the invention discloses a kind of USB Type C adapters for realizing USB device detection,Obtain the first ground signalling in the first connector,Judge USB3.X equipment whether by carry according to first ground signalling,First ground signalling is as independent signal,That is the ground signalling is not shorted together with other ground signallings,So,When having USB3.X equipment carries,First ground signalling is set to earth signal,And when no USB3.X equipment carry,For non-earth signal,It may determine that the first connector whether by carry by the signal,And then,Determine whether to redistribute data channel by the signal,When the first connector has USB3.X equipment carries,By redistributing passage,So that USB3.X data and video data can be with simultaneous transmissions,And when the first connector does not have USB3.X equipment carries,Recover transmission of all data channel to video data,So as to,Meets the needs of functional diversities and flexibility in data transfer.
Description
Technical field
The present invention relates to video data transmission field, more particularly to a kind of USB Type-C for realizing USB device detection to fit
Orchestration and its passage control method.
Background technology
USB Type-C interfaces have faster transmission speed, stronger power transmission capacity and support the spies such as double-side plug-in
Point, is the main flow selection of current electronic equipment interfaces, and being provided with USB Type-C on increasing electronic equipment connects
Mouthful.
USB Type-C interface conversion is the interface of other vision signals by USB Type-C adapters, while is also had
USB interface, video signal interface such as DP (Display Port), VGA (Video Graphics Array) or HDMI (High
Definition Multimedia Interface, HDMI) interface etc., so, can be by source device
Multi-medium data be output to by traditional video signal interface on display device, may be simultaneously used for the transmission of data.
USB Type-C have four pairs of high-speed-differentials to share these data to data channel, USB3.x data and video data
Passage is transmitted, and at present, in the application of USB Type-C adapters, the distribution of data channel is when system configuration initializes
It is fixed up, data channel, such as the specific distribution side of data channel can not be redistributed according to different application scenarios
Formula is：When transmitting video data, all data channel are used for the transmission of video；When transmitting USB3.x data, all data
Passage is used for the transmission of USB3.x data, and this can not meet the needs of simultaneous transmission USB3.x data and video data；And when number
It is according to the specific method of salary distribution of passage：Some of data channel are used for the transmission of USB3.x data, by other data
Passage is used for the transmission of video data, so, can meet the needs of simultaneous transmission USB3.x data and video data, but only
When needing transmitting video data, the data channel of still also part is transmitted, and the transmission of passage portion can reduce transmission of video
Resolution ratio, influence video quality.So, can not once it is determined that the application mode of passage, transmission means are just fixed
Corresponding transmission means is determined according to the use state of adapter, this mode can not meet that user is more to the function of adapter
Sample and the demand of flexibility.
The content of the invention
It is full the invention provides a kind of USB Type-C adapters and its passage control method for realizing USB device detection
Sufficient functional diversities and the demand of flexibility.
A kind of USB Type-C adapters for realizing USB device detection, one end of the adapter is USB Type-C ends
Mouthful, the other end is USB3.X the first connector and the second connector of video data, and the adapter is used to pass through USB
Four pairs of differential pair data channel of Type-C ports are transmitted USB3.X data to the first connector and transmitted to the second connector
Video data；Also include：
First connector state determining module, for obtaining the first ground signalling in the first connector, and according to described
First ground signalling, it is determined that and export the status signal of the first connector, the status signal indicated whether by USB3.X equipment
Carry, first ground signalling are the 7th stitch or housing signal and are independent signal；
Channel control module, for when the status signal is expressed as USB3.X equipment carries, judging four pairs of differences
Whether decilog is occupied according to passage, if so, then redistributing data channel so that in four pairs of differential pair data channel
A part is used to transmit USB3.X data, another part for continuing transmitting video data；And when the status signal represents
When being changed into non-carry from USB3.X hanging equipment idlings, data channel is redistributed so that four pairs of differential pair data channel are all
For transmitting video data.
Alternatively, the first connector state determining module includes：
First comparator, one input end connect the first reference voltage, another input be connected to the first ground signalling, with
And the first power supply is connected to by the first pull-up resistor, the voltage of first power supply is more than first reference voltage.
Alternatively, the adapter is additionally operable to by the D+/D- data channel of USB Type-C ports to the first connector
USB2.0 data are transmitted, first ground signalling is the ground signalling of the 7th stitch in first connector.
Alternatively, the first connector state determining module, it is additionally operable to obtain the second ground connection letter in the first connector
Number, second ground signalling is independent signal and is the housing signal of first connector；Then,
It is described according to first ground signalling, it is determined that and export the first connector status signal include：
According to first ground signalling and second ground signalling, it is determined that and export the first connector state letter
Number, whether the status signal be by USB3.X equipment carry and by USB2.0 equipment carries.
Alternatively, the first connector state determining module also includes：
Second comparator, one input end connect the second reference voltage, another input be connected to the second ground signalling, with
And second source is connected to by the second pull-up resistor, the voltage of the second source is more than second reference voltage.
Alternatively, in addition to：The USB Type-C connectors being connected with the USB Type-C ports.
Alternatively, the video data includes DP, VGA or HDMI data.
A kind of passage control method of USB Type-C adapters, one end of the adapter is USB Type-C ports,
The other end is USB3.X the first connector and the second connector of video data, and the adapter is used to pass through USBType-C
Four pairs of differential pair data channel of port transmit USB3.X data to the first connector and transmit video counts to the second connector
According to；The adapter also includes the first connector state determining module, for obtaining the first ground signalling in the first connector,
And according to first ground signalling, it is determined that and export the first connector status signal, the status signal indicate whether by
USB3.X equipment carries, first ground signalling are the 7th stitch or housing signal and are independent signal；The passage control
Method includes：
Judge whether the status signal is USB3.X equipment carries；
When the status signal is expressed as USB3.X equipment carries, judge four pairs of differential pair data channel whether by
Take；
If so, then redistribute data channel so that the part in four pairs of differential pair data channel is used to transmit
USB3.X data, another part are used to continue transmitting video data；
When the status signal represents to be changed into non-carry from USB3.X hanging equipment idlings, data channel is redistributed, is made
Obtain four pairs of differential pair data channel and be all used for transmitting video data.
The USB Type-C adapters and its passage control method provided in an embodiment of the present invention for realizing USB device detection,
The first ground signalling in the first connector is obtained, whether USB3.X equipment is judged by carry according to first ground signalling,
One ground signalling is as independent signal, that is to say, that the ground signalling is not shorted together with other ground signallings, so, is had
During USB3.X equipment carries, first ground signalling is set to earth signal, and when no USB3.X equipment carry, to believe non-ly
Number, whether the first connector may determine that by carry by the signal, and then, determine whether to redistribute number by the signal
According to passage, when the first connector has USB3.X equipment carries, by redistributing passage so that USB3.X data and video counts
According to all data channel can be recovered to video data with simultaneous transmission, and when the first connector does not have USB3.X equipment carries
Transmission, so as to meet the needs of functional diversities and flexibility in data transfer.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the structural representation according to the USB Type-C adapters of the embodiment of the present invention；
Fig. 2 is stitch distribution and the attachment structure schematic diagram of USB3.X connector；
Fig. 3 is the structure of the first connector state determining module in the USB Type-C adapters according to the embodiment of the present invention
Schematic diagram；
Fig. 4 is the schematic flow sheet according to the passage control method of the USB Type-C adapters of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of the application protection.
As the description in background technology, at present, in the application of USB Type-C adapters, the distribution of data channel be
What system configuration was fixed up when initializing, data channel can not be redistributed according to different application scenarios, therefore, this hair
It is bright to provide a kind of USB Type-C adapters, to meet the needs of functional diversities and flexibility in data transfer.
Technical scheme for a better understanding of the present invention, first USB Type-C each FPDP is illustrated.USB
Type-C port includes four pairs of differential pair data channel, D+/D-, sideband channel SBU1/SBU2, collocation channel CC and VCONN
Deng.Wherein, four pairs of differential pair data channel are respectively：TX1+/TX1-, TX2+/TX1-, RX1+/RX1-, RX2+/RX2-, for height
Speed data channel, under default situations, USB3.X data transfers are supported, are the FPDPs of high speed, peak data rate can reach
10Gb/s, further, it is also possible to for transmitting DP or HDMI video data, wherein, USB3.X data include USB3.0 or USB3.1
Data.D+/D- is used for transmitting USB2.0 data.Sideband channel SBU1/SBU2 (SBU, Side Band Use) is auxiliary signal end
Mouthful.CC (Configuration Channel) is collocation channel, itself and VCONNOne is all that Type-C main frame judges USBType-
The direction of insertion of C adapter and power supply is provided for adapter, will be in V after the insertion of Type-C adapters is judgedCONNIt is upper that electricity is provided
Pressure, the usual voltage is 5V, to provide operating voltage for Type-C adapters.
USB Type-C adapters are USB Type-C ports and USB port, the interconnecting device of video data port, are referred to
Shown in Fig. 1, one end of adapter 01 is USB Type-C ports, and USB Type-C ports are connected to USB Type-C connectors
02, the other end of adapter 01 is USB3.X connector 400 and the connector 500 of video data, for the ease of describing,
USB3.X connector 400 is denoted as the first connector, and the connector 500 of video data is denoted as the second connector.
Normally, the USB Type-C connectors 02 can be Male head connector, be connected to USB Type-C main frame 03,
Namely source data equipment, for example, can be personal computer, notebook computer, tablet personal computer, server, mobile phone or other set
Equipment for being equipped with source data etc., the first connector 400 and the second connector 500 can be socket connector, the first connector 400
For being connected with USB device, the USB device can be USB storage device or personal computer, notebook with USB interface
Other electronic equipments such as computer, tablet personal computer or mobile phone, the second connector 500 are used to be connected with video display apparatus 05, video
Display device 05 can be display apparatus or personal computer, TV, notebook computer, flat board electricity with display apparatus
Other electronic equipments such as brain or mobile phone.
In the present invention, the adapter 01 is used for by four pairs of differential pair data channel of USB Type-C ports to first
Connector 400 transmits USB3.X data and to the transmitting video data of the second connector 500, according to different designs, adapter
01 can be made up of different units, to realize the transfer function of USB3.X data and video data.It is specific real at some
Apply in example, with reference to shown in figure 1, the adapter 01 includes control unit 100 and transport module 200, and transport module 200 includes
USB3.X data transmission modules 202 and video data transfer module 201, control unit 100 connect USB Type-C ports
CC passages, VCONNWith SBU1/SBU2 passages, for connecting detection, USB-PD Control on Communication, AUX Control on Communication, consultative management with
And other processing；The one end of USB3.X data transmission modules 202 is connected with four pairs of differential pair data channel of USB Type-C ports,
The other end is connected with USB3.X connector 400, and for the transmission of USB3.X data, USB3.X data transmission modules 202 can be with
, under the control of the control unit 100, can only data of the data channel of connected component or whole for passive data by-pass switch
Passage carries out the transmission of USB3.X data；Four pairs of differential pairs of the one end of video data transfer module 201 and USB Type-C ports
Data channel connects, and the other end is connected with the second connector 500 of video data, for handling or changing incoming video signal
To export vision signal, output vision signal is, for example, DP, VGA or HDMI video data-signal etc..In the control of control unit 100
Under system, USB3.X data and the biography of video data are realized by USB3.X data transmission modules and video data transfer module
It is defeated.Control unit 100 can be independent chip module or with USB3.X data transmission modules 202 and video counts
The chip module integrated according to transport module 201, the application are not limited its way of realization.
In addition, for preferably compatible USB2.0 data, in embodiments of the present invention, the adapter 01 is additionally operable to USB2.0
The transmission of data, USB2.0 directly can be transmitted to the first connector 400 by the D+/D- data channel of USB Type-C ports
Data.
In embodiments of the present invention, adapter 01 also includes the first connector state determining module 500 and passage control mould
Block 101, it can be arranged in the lump in control unit 100, wherein, the first connector state determining module 500 is used to obtain first
The first ground signalling in connector 400, and according to first ground signalling, it is determined that and exporting the shape of the first connector 400
State signal, the status signal indicate whether that, by USB3.X equipment carries, first ground signalling is the 7th stitch or housing
Signal be independent signal.Channel control module, for when the status signal is expressed as USB3.X equipment carries, judging institute
Whether occupied four pairs of differential pair data channel are stated, if so, then redistributing data channel so that four pairs of differential pair data
A part in passage is used to transmit USB3.X data, another part for continuing transmitting video data；And when the state
When signal represents to be changed into non-carry from USB3.X hanging equipment idlings, data channel is redistributed so that four pairs of difference logarithms
All it is used for transmitting video data according to passage.
With reference to shown in figure 2, wherein figure (A) is the stitch distributed architecture schematic diagram of USB3.X connector, USB3.X company
Connect device while be also compatible with the connection of USB2.0 data, when the connection for USB2.0 data, only the first stitch to the 4th stitch
Occupied, the 5th stitch to nine kinds of needles pin is hanging, and when the connection for USB3.X data, all stitch are occupied.
Have three ground signallings in USB3.X connector, respectively the 7th stitch GND_DRAIN, the 4th stitch GND and
The housing SHELL of connector.In certain embodiments, USB3.X data are only used in the connector of the USB3.X when adapter
During connection, wherein the 4th stitch GND is normal ground terminal, the 7th stitch GND_DRAIN's and connector in these three ground signallings
Housing SHELL is determined for the first ground signalling of the status signal of the first connector, that is to say, that the first ground signalling
Can be any one in the 7th stitch GND_DRAIN and the housing SHELL of connector ground signalling.First ground signalling
For independent signal, i.e. the signal is so only having equipment not with other ground signalling short circuits, only an independent signal
During carry, ground signalling can be just set to.With reference to shown in (B) in figure 2, figure (B) is the first company when having USB3.X equipment carries
The connection status schematic diagram of device is connect, because the first ground signalling is independent signal, only when there is USB3.X equipment carries, first
Ground signalling is just set to earth signal, and during without USB3.X equipment carries, the first ground signalling is then set to non-earth signal.Cause
Whether this, the first connector is may determine that by the status signal of carry by the signal, and then, determined by the status signal
Whether data channel is redistributed.
In further embodiments, the USB3.X of adapter connector 400 had not only been used for the connection of USB3.X data but also used
When the connection of USB2.0 data, the equipment of carry is probably USB2.0 equipment or USB3.X equipment on the first connector 400,
And USB2.0 equipment by D+/D- data channel transmit data, without with transmission of video shared data passage, only when carry is
During USB3.X equipment, it is necessary to transmission of video shared data passage, therefore, when the first connector 400 has by carry, it is necessary to sentence
Break and USB2.0 equipment or USB3.X equipment carries.With reference to shown in (B) in figure 2, (C), the 7th stitch GND_DRAIN only exists
It is occupied during USB3.X equipment carries, it is hanging when when USB2.0 equipment carries, then, in the first connector state determining module
In, it may be determined that two ground signallings, the first ground signalling are the 7th stitch GND_DRAIN ground signalling, and the second ground connection is believed
Number be the first connector shell SHELL ground signalling, the two ground signallings are all independent signal, i.e., often do not believe with other
Number short circuit, so, when the first ground signalling and the second ground signalling are all earth signal, then it represents that it is USB3.X equipment carries,
When the second ground signalling is earth signal and the first ground signalling is non-earth signal, then it represents that be USB2.0 equipment carries, when
When one ground signalling and the second ground signalling are all non-earth signal, then it represents that without USB device carry.So, by identify this two
Individual ground signalling, it is possible to determine the status signal of the first connector, whether the status signal refers to by USB3.X equipment carries
And whether by USB2.0 equipment carries.
In a preferred embodiment of the invention, the first connector state determining module is the circuit module for including comparator, is led to
Comparator is crossed to obtain the status information of simultaneously out connector.With reference to shown in figure 3, the first connector state determining module includes the
One comparator 501A, for obtaining and exporting the first ground signalling, the second comparator 501B is can further include, for obtaining
Take and export the second ground signalling.
Specifically, as shown in figure 3, first comparator 501A input connection the first reference voltage VREF1, another defeated
Enter end to be connected to the first ground signalling and be connected to the first power supply VCC1, first power supply by the first pull-up resistor Ru1
VCC1 voltage is more than the first reference voltage VREF1.In the specific embodiment, the first reference voltage VREF1 connections
First comparator 501A positive input terminal, the first ground signalling and the first pull-up resistor Ru1 connection first comparators 501A's is negative
Input, in no USB3.X equipment carry, negative input end is pulled up resistance Ru1 and the voltage at the end is maintained at into the first power supply
Voltage VCC1, because the first power supply VCC1 is more than reference voltage VREF1, now, first comparator VREF1 output U3CONFor 0,
And when there is USB3.X equipment carries, the first ground signalling is grounded, and negative input end is grounded signal and is pulled down to ground voltage, ginseng
It is ungrounded voltage to examine voltage, more than ground voltage, now, first comparator output U3CONFor 1.In the specific example,
First ground signalling is the 7th stitch GND_DRAIN signal.
A second comparator 501B input connects the second reference voltage VREF2, and another input is connected to second and connect
Earth signal and second source VCC2, second source VCC2 voltage is connected to by the second pull-up resistor Ru2 it is more than institute
State the second reference voltage VREF2.Same first comparator, in the specific embodiment, the second reference voltage connection second is compared
Device 501B positive input terminal, the second ground signalling and second pull-up resistor Ru2 the second comparators of connection 501B negative input end,
When not having USB2.0 or USB3.X equipment carries, negative input end is pulled up resistance Ru2 and the voltage at the end is maintained at into second source
Voltage VCC2, because second source VCC2 is more than the second reference voltage VREF2, now, the second comparator output UXCONFor 0,
And when having USB2.0 equipment or USB3.X equipment carries, the second ground signalling is grounded, and negative input end is grounded signal drop-down
To ground voltage, reference voltage is ungrounded voltage, more than ground voltage, now, the second comparator output UXCONFor 1.At this
In specific example, the second ground signalling is connector shell SHELL signal.
When being only used for the connection of USB3.X data when the first connector, obtain and export by first comparator can
USB3.X equipment carry whether the status information of carry, in above-mentioned specific example, the output U3 of first comparatorCONFor 1
When, represent the first connector by USB3.X equipment, U3CONFor 0 when, for no USB3.X equipment carry；And when the first connector is used
When the connection of USB3.X data and USB2.0 data, obtained by first comparator and the second comparator and export whether by
USB3.X equipment carry and whether by the status signal of USB2.0 equipment carries, in above-mentioned specific example, when the first ratio
Compared with the output U3 of deviceCONFor 1 and second comparator output UXCONFor 1 when, represent the first connector 400 by USB3.X hanging equipments
Carry, as the output U3 of first comparatorCONFor 0 and second comparator output UXCONFor 1 when, represent the quilt of the first connector 400
USB2.0 equipment carries, as the output U3 of first comparatorCONFor 0 and second comparator output UXCONFor 0 when, represent first
Connector 400 is not by carry.
Due to the first connector can be obtained whether by the status signal of USB3.X equipment carries, then, can be according to this
Status signal, carry out the control of further control data transmission channel, to meet different needs, in the control of specific passage,
, when status signal is expressed as USB3.X equipment carries, it can continue to judge four pairs by obtaining above-mentioned status signal in real time
Whether differential pair data channel is occupied, if, then it represents that the transmission of video data is now carried out, then, re-starts number
According to the distribution of passage so that the part in four pairs of differential pair data channel is used to transmit USB3.X data, another part
For continuing transmitting video data.Regarded specifically, can inform that data-source device reduces by way of USB-PD/AUX communications
Frequency division resolution, the transmission of video data is carried out using two pairs of differential data passages therein, and two further pairs differential data is led to
Road is used for the transmission of USB3.X data, then, with two data channel transfer video datas in a manner of low resolution, another two
Data channel simultaneous transmission USB3.X data.
In whole transmission, persistently obtain status signal, when the status signal changes, when the status signal represent by
When USB3.X hanging equipment idlings are changed into non-carry, then it represents that now USB3.X data transfers have terminated, then, re-start data and lead to
The distribution in road so that four pairs of differential pair data channel are all used for transmitting video data.Specifically, USB-PD/ can be passed through
The mode of AUX communications informs that data-source device carries out transmission of video in a manner of high-resolution again, reuses four pairs of difference
Video data transmission is used for data channel.
The embodiment of adapter of the present invention is described in detail above, in this scenario, obtained in the first connector
The first ground signalling, whether USB3.X equipment is judged by carry according to first ground signalling, the first ground signalling is as only
Vertical signal, that is to say, that the ground signalling is not shorted together with other ground signallings, so, when having USB3.X equipment carries,
First ground signalling is set to earth signal, and when no USB3.X equipment carry, is non-earth signal, can be with by the signal
Whether the first connector is judged by carry, and then, determine whether to redistribute data channel by the signal, when the first connection
When device has USB3.X equipment carries, by redistributing passage so that USB3.X data and video data can with simultaneous transmission, and
When the first connector does not have USB3.X equipment carries, recover transmission of all data channel to video data, so as to meet number
According to functional diversities in transmission and the demand of flexibility.
In addition, present invention also offers a kind of passage control method of USBType-C adapters, wherein, USB Type-C
One end of adapter is USB Type-C ports, the second connection of the first connector and video data that the other end is USB3.X
Device, the adapter are used to transmit USB3.X to the first connector by four pairs of differential pair data channel of USBType-C ports
Data and to the second connector transmitting video data；Characterized in that, the adapter is also true including the first connector state
Cover half block, for obtaining the first ground signalling in the first connector, and according to first ground signalling, it is determined that and exporting the
The status signal of a connector, the status signal indicated whether by USB3.X equipment carries, and first ground signalling is the
Seven stitch or housing signal and be independent signal.
Wherein, adapter is with the description of adapter in above-described embodiment, and here is omitted.Because adapter can determine
Whether first connector according to the status signal, can further enter row of channels control by the status signal of USB3.X equipment carries
System, with reference to figure 4, the method for passage control includes：
S401, judge whether the status signal is USB3.X equipment carries；
When the status signal is expressed as USB3.X equipment carries, S402, four pairs of differential pair data channel are judged
It is whether occupied；
If so, S403, then redistribute data channel so that the part in four pairs of differential pair data channel is used for
Transmission USB3.X data, another part are used to continue transmitting video data；
S404, judges whether the status signal from USB3.X hanging equipment idlings is changed into non-carry, if so, S405, again
Distribute data channel so that four pairs of differential pair data channel are all used for transmitting video data.
The method of passage control can perform in the control unit of adapter, and the status signal transmission is to controlling list
Member, control unit monitor the status signal, and then enter the control of row of channels, specifically describe the description of same passage control.
Further, the first connector state determining module includes：First comparator, one input end connection first
Reference voltage, another input is connected to the first ground signalling and is connected to the first power supply by the first pull-up resistor, described
The voltage of first power supply is more than first reference voltage, and the status signal is the output signal of the first comparator.
Further, the adapter is additionally operable to connect to first by the D+/D- data channel of USB Type-C ports
Device transmits USB2.0 data, and first ground signalling is the ground signalling of the 7th stitch in first connector.
Further, the first connector state determining module, it is additionally operable to obtain the second ground connection in the first connector
Signal, second ground signalling are independent signal and are the housing signal of first connector；Then,
It is described according to first ground signalling, it is determined that and export the first connector status signal include：
According to first ground signalling and second ground signalling, it is determined that and export the first connector state letter
Number, whether the status signal be by USB3.X equipment carry and by USB2.0 equipment carries.
Further, the first connector state determining module also includes：
Second comparator, one input end connect the second reference voltage, another input be connected to the second ground signalling, with
And second source is connected to by the second pull-up resistor, the voltage of the second source is more than second reference voltage, described
Status signal is the first comparator and the output signal of second comparator.
System embodiment described above is only schematical, wherein the module illustrated as separating component or
Unit can be or may not be physically separate, can be as the part that module or unit are shown or can also
It is not physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Need to select some or all of module therein to realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not
In the case of paying creative work, you can to understand and implement.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Claims (10)
1. a kind of USB Type-C adapters for realizing USB device detection, one end of the adapter is USB Type-C ports,
The other end is USB3.X the first connector and the second connector of video data, and the adapter is used to pass through USB Type-C
Four pairs of differential pair data channel of port transmit USB3.X data to the first connector and transmit video counts to the second connector
According to；Characterized in that, also include：
First connector state determining module, for obtaining the first ground signalling in the first connector, and according to described first
Ground signalling, it is determined that and export the status signal of the first connector, the status signal indicated whether by USB3.X equipment carries,
First ground signalling is the 7th stitch or housing signal and is independent signal；
Channel control module, for when the status signal is expressed as USB3.X equipment carries, judging four pairs of differential pairs
Whether data channel is occupied, if so, then redistributing data channel so that one in four pairs of differential pair data channel
Divide and be used to transmit USB3.X data, another part for continuing transmitting video data；And when the status signal represent by
When USB3.X hanging equipment idlings are changed into non-carry, data channel is redistributed so that four pairs of differential pair data channel are all used
In transmitting video data.
2. adapter according to claim 1, it is characterised in that the first connector state determining module includes：
First comparator, one input end connect the first reference voltage, and another input is connected to the first ground signalling, Yi Jitong
Cross the first pull-up resistor and be connected to the first power supply, the voltage of first power supply is more than first reference voltage, the state
Signal is the output signal of the first comparator.
3. adapter according to claim 1 or 2, it is characterised in that the adapter is additionally operable to by USB Type-C
The D+/D- data channel of port transmits USB2.0 data to the first connector, and first ground signalling is the described first connection
The ground signalling of 7th stitch in device.
4. adapter according to claim 3, it is characterised in that the first connector state determining module, be additionally operable to
The second ground signalling in the first connector is obtained, second ground signalling is independent signal and is first connector
Housing signal；Then,
It is described according to first ground signalling, it is determined that and export the first connector status signal include：
According to first ground signalling and second ground signalling, it is determined that and export the first connector status signal, institute
Whether whether state status signal is by USB3.X equipment carry and by USB2.0 equipment carries.
5. adapter according to claim 4, it is characterised in that the first connector state determining module also includes：
Second comparator, one input end connect the second reference voltage, and another input is connected to the second ground signalling, Yi Jitong
Cross the second pull-up resistor and be connected to second source, the voltage of the second source is more than second reference voltage, the state
Signal is the first comparator and the output signal of second comparator.
6. a kind of passage control method of USB Type-C adapters, one end of the adapter is USB Type-C ports, separately
One end is USB3.X the first connector and the second connector of video data, and the adapter is used to pass through USB Type-C ends
Four pairs of differential pair data channel of mouth transmit USB3.X data to the first connector and transmit video counts to the second connector
According to；Characterized in that, the adapter also includes the first connector state determining module, for obtaining the in the first connector
One ground signalling, and according to first ground signalling, it is determined that and exporting the status signal of the first connector, the status signal
Indicate whether to be the 7th stitch or housing signal and be independent signal by USB3.X equipment carries, first ground signalling；Institute
Stating passage control method includes：
Judge whether the status signal is USB3.X equipment carries；
When the status signal is expressed as USB3.X equipment carries, judge whether four pairs of differential pair data channel are occupied
With；
If so, then redistribute data channel so that the part in four pairs of differential pair data channel is used to transmit
USB3.X data, another part are used to continue transmitting video data；
When the status signal represents to be changed into non-carry from USB3.X hanging equipment idlings, data channel is redistributed so that institute
State four pairs of differential pair data channel and be all used for transmitting video data.
7. according to the method for claim 6, it is characterised in that the first connector state determining module includes：
First comparator, one input end connect the first reference voltage, and another input is connected to the first ground signalling, Yi Jitong
Cross the first pull-up resistor and be connected to the first power supply, the voltage of first power supply is more than first reference voltage, the state
Signal is the output signal of the first comparator.
8. the method according to claim 6 or 7, it is characterised in that the adapter is additionally operable to by USB Type-C ends
The D+/D- data channel of mouth transmits USB2.0 data to the first connector, and first ground signalling is first connector
In the 7th stitch ground signalling.
9. according to the method for claim 8, it is characterised in that the first connector state determining module, be additionally operable to obtain
The second ground signalling in the first connector is taken, second ground signalling is independent signal and is the shell of first connector
Body signal；Then,
It is described according to first ground signalling, it is determined that and export the first connector status signal include：
According to first ground signalling and second ground signalling, it is determined that and export the first connector status signal, institute
Whether whether state status signal is by USB3.X equipment carry and by USB2.0 equipment carries.
10. according to the method for claim 9, it is characterised in that the first connector state determining module also includes：
Second comparator, one input end connect the second reference voltage, and another input is connected to the second ground signalling, Yi Jitong
Cross the second pull-up resistor and be connected to second source, the voltage of the second source is more than second reference voltage, the state
Signal is the first comparator and the output signal of second comparator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710860181.9A CN107506322B (en) | 2017-09-21 | 2017-09-21 | Type-C adapter for realizing detection of USB equipment and channel control method |
| TW106135041A TWI651615B (en) | 2017-09-21 | 2017-10-13 | A usb type-c adapter and the channel control method for performing usb device detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710860181.9A CN107506322B (en) | 2017-09-21 | 2017-09-21 | Type-C adapter for realizing detection of USB equipment and channel control method |
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| CN107506322B CN107506322B (en) | 2023-09-29 |
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| CN107506322B (en) | 2023-09-29 |
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