CN104809091B - A kind of switching device - Google Patents
A kind of switching device Download PDFInfo
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- CN104809091B CN104809091B CN201510194474.9A CN201510194474A CN104809091B CN 104809091 B CN104809091 B CN 104809091B CN 201510194474 A CN201510194474 A CN 201510194474A CN 104809091 B CN104809091 B CN 104809091B
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Abstract
The invention discloses a kind of switching device, including：First USB；Identification circuit, it is connected with the first USB；Change-over circuit, comprising the first output end, the second output end, the input of change-over circuit is connected with the output end of the first USB and identification circuit；Multimedia interface, it is connected with the first output end and the second output end；Wherein, when the first USB is connected with the second USB of electronic equipment, identification circuit is used for the type for identifying the second USB, and change-over circuit is output control signals to, control change-over circuit selects corresponding with the type of the second USB the first output end or the second output end output signal.Pass through above-mentioned technical proposal, solving MHL connecting lines in the prior art suitable for the technical problem for the electronic equipment that interface is 11pin, can not increase the scope of application of switching device.
Description
Technical field
The present invention relates to communication interface technique field, more particularly to a kind of switching device.
Background technology
With the continuous development of mobile communication technology, portable consumer electronic device has obtained quick development, its function
Also gradual perfection, except the audio-visual number that can be shot by USB (Universal Serial Bus, USB)
It is outer on computer according to uploading to, electronic equipment high-definition audio and video standard interface (Mobile High-Definition can also be passed through
Link, MHL) video-audio data is uploaded on HDTV and shown.
MHL is a kind of audio-visual standard interface for connecting portable consumer electronic device, using only a bars cable, is passed through
HDMI (High Definition Multimedia Interface, HDMI) and standard Micro USB
Mobile phone and HDTV can be interconnected by Connector (5pin).
The output interface of portable consumer electronic device in the prior art, except using standard Micro USB
Connector (5pin) outside, also much using 11pin serial bus interface.Fig. 1 and Fig. 2 are refer to, is existing skill
The pin definitions of Micro USB Connector (5pin) and 11pin USBs illustrate in art, due to 5pin's
The definition of interface and 11pin interface differs, so existing MHL connecting lines can not be applied to the electronics that interface is 11pin and set
It is standby.
It can be seen that the presence of MHL connecting lines can not ask suitable for the technology for the electronic equipment that interface is 11pin in the prior art
Topic.
The content of the invention
The embodiment of the present invention provides a kind of switching device, can not be applied to connect for solving MHL connecting lines in the prior art
Mouth is the technical problem of 11pin electronic equipment, increases the scope of application of switching device.
The embodiment of the present application provides a kind of switching device, including：
First USB；
Identification circuit, it is connected with first USB；
Change-over circuit, comprising the first output end, the second output end, the input of the change-over circuit and described first general
The output end of serial bus interface and the identification circuit is connected；
Multimedia interface, it is connected with first output end and the second output end；
Wherein, when first USB is connected with the second USB of electronic equipment
When, the identification circuit is used for the type for identifying second USB, and outputs control signals to described turn
Circuit is changed, controls the change-over circuit selection first output corresponding with the type of second USB
End or the second output end output signal.
Optionally, the pin 2 of first USB passes through first output end and the multimedia
First multi-medium data pin of interface is connected, and passes through second output end and the first bus data of the multimedia interface
Pin is connected；
The pin 3 of first USB pass through first output end and the multimedia interface the
Two multi-medium data pins are connected, and pass through second output end and the second bus data pin phase of the multimedia interface
Even.
Optionally, the pin 6 of first USB passes through second output end and the multimedia
First multi-medium data pin of interface is connected；
The pin 7 of first USB pass through second output end and the multimedia interface the
Two multi-medium data pins are connected.
Optionally, the pin 8 of first USB passes through second output end and the multimedia
The audio-visual controlling bus pin of interface is connected；
The pin 10 of first USB passes through first output end and the multimedia interface
Audio-visual controlling bus pin is connected；It is connected by second output end with the identity pin of the multimedia interface.
Optionally, the identification circuit includes：
First resistor, the both ends of the first resistor pin 9 and pipe with first USB respectively
Pin 1 is connected, wherein the pin 1 of first USB is power line pin；
Second resistance, one end are connected with the pin 9 of first USB, the other end and the conversion electricity
Road is connected.
Optionally, the change-over circuit includes：At least four converters；The input control terminal of each converter and described the
The pin 9 of one USB is connected；
Wherein, when second USB is standard type, first USB
Pin 9 is high level, and each converter passes through the first output end output signal；When second USB
When interface is extended pattern, the pin 9 of first USB is low level, and each converter passes through described
Second output end output signal.
Optionally, first USB includes 11 pins.
Said one or multiple technical schemes in the embodiment of the present application, at least have the following technical effect that：
By providing a kind of switching device of the first USB for including 11 pins and multimedia interface,
And an identification circuit and change-over circuit are set in the switching device, when the of the first USB and electronic equipment
When two USBs are connected, the type of the second USB is identified by identification circuit, and exports control
Signal processed to change-over circuit, control change-over circuit selects the first output end corresponding with the type of the second USB
Or the second output end output signal so that switching device can be directed to different USBs, using different output
Output signal is held, the USB of 11 pins is can be applied not only to, can be applicable to other types of connect
Mouthful, the technical problem for the electronic equipment that interface is 11pin, increase turn can not be applied to by solving MHL connecting lines in the prior art
The scope of application of connection device.
Brief description of the drawings
Fig. 1 is the schematic diagram that the Micro USB Connector interfaces of 5pin in the prior art define；
Fig. 2 is the schematic diagram that the USB of 11pin in the prior art defines；
Fig. 3 is a kind of schematic diagram for switching device that the embodiment of the present application provides；
Fig. 4 is a kind of circuit diagram for switching device that the embodiment of the present application provides.
Embodiment
In the technical scheme that the embodiment of the present application provides, by the string for identifying the electronic equipment for accessing switching device interface
The type of row USB, control switching device selects different output end output signals for different interface types, real
Existing different circuit connection so that switching device can be used in the electronic equipment of different interface type, increase switching device
Use range.
Below in conjunction with the accompanying drawings to the main realization principle of the embodiment of the present application technical scheme, embodiment and its correspondingly
The beneficial effect that can reach is explained in detail.
Embodiment one
Fig. 3 is refer to, the embodiment of the present application provides a kind of switching device, and the switching device includes：
First USB 310；
Identification circuit 320, it is connected with first USB 310；
Change-over circuit 330, comprising the first output end, the second output end, the input of the change-over circuit 330 and described the
The output end of one USB 310 and the identification circuit 320 is connected；
Multimedia interface 340, it is connected with first output end and the second output end；
Wherein, when the second USB phase of first USB 310 and electronic equipment
Lian Shi, the identification circuit 320 is used for the type for identifying second USB, and outputs control signals to institute
Change-over circuit 330 is stated, controls the change-over circuit 330 to select institute corresponding with the type of second USB
State the first output end or the second output end output signal.
The first USB 310 that the embodiment of the present application provides is specifically as follows general comprising 11 pins
Serial bus interface, but the number of pins of the first USB that the embodiment of the present application provides is not limited to 11, can be with
The total interface that compatibility is actually subjected to according to switching device is set, and such as 8,13,16.Table one is refer to, below with the first of 11pin
It is described in detail exemplified by USB (Micro USB 11PIN Connector).First USB
The definition of each pin of interface is：Wherein pin1 is that VBUS is power line pin；Pin2 is MHL-/USB-, i.e., matchmaker more than first
Volume data pin or the first bus data pin；Pin3 is MHL+/USB+, i.e. the second multi-medium data pin or the second number of buses
According to pin；Pin6 is MHL-, namely the first multi-medium data pin；Pin7 is MHL+, namely the second multi-medium data pin；
Pin8 is eCBUS-S, i.e., audio-visual controlling bus pin；Pin9 is MHLGND, i.e. multi-medium data ground pin；Pin10 is
ECBUS-S/ID, i.e., audio-visual controlling bus pin or identity pin；Pin11 is USBGND, i.e. bus data ground pin.
| Pin | Definition |
| 11 | USBGND |
| 10 | eCBUS-S/ID |
| 9 | MHLGND |
| 8 | eCBUS-S |
| 7 | MHL+ |
| 6 | MHL- |
| 5 | |
| 4 | |
| 3 | MHL+/USB+ |
| 2 | MHL-/USB- |
| 1 | VBUS |
Table one
Table two is refer to for multimedia interface 340 (HDMI Connector) pin that the embodiment of the present application provides to determine
Justice.Wherein, pin19 is audio-visual controlling bus pin；Pin18 is power line pin；Pin16 is identity pin；Pin14 is
First bus data pin；Pin13 is the second bus data pin；Pin9 is the first multi-medium data pin；Pin7 is first
Multi-medium data pin, remaining pin are identical with HNMI pin definitions in the prior art.
| Pin | Define 1 | Define 2 |
| 19 | HPD | eCBUS-S |
| 18 | HDNI 5V | VBUS |
| 17 | GDN | GND |
| 16 | SDA | ID |
| 15 | SCL | CD_PULLUP |
| 14 | NC | USB- |
| 13 | CEC | USB+ |
| 12 | TMDS CLK- | |
| 11 | CHK CABLE | CHK CABLE |
| 10 | TMDS CLK+ | |
| 9 | TMDS Data0- | MHL- |
| 8 | GND | GND |
| 7 | TMDS Data0+ | MHL+ |
| 6 | TMDS Data1- |
| 5 | GND | GND |
| 4 | TMDS Data1+ | |
| 3 | TMDS Data1- | |
| 2 | GND | CD_SENSE |
| 1 | TMDS Data2+ |
Table two
Fig. 4 is refer to, the first USB 310 is connected with identification circuit 320 and change-over circuit 330.Identification
Circuit 320 includes first resistor and second resistance, wherein, the both ends of first resistor respectively with the first USB
310 pin 9 is connected with pin 1, i.e., first resistor is connected with the pin9 and pin1 of the first USB 310, the
The pin 1 of one USB 310 is power line pin.One end of second resistance and the first USB
310 pin 9 is connected, and the other end is connected with change-over circuit 330.Specifically, the pin9 of the first USB 310 with
One end of second resistance is connected, and the other end of second resistance is that switch ends are connected with the input control terminal of change-over circuit 330.
Change-over circuit 330 includes at least four converters, and each converter includes input control terminal i.e. switch ends,
Pin 9 of the input control terminal of each converter with the first USB 310 is connected.When the second general serial is total
When line interface is standard type, the pin 9 of the first USB 310 is high level, and each converter passes through institute
State the first output end output signal；When second USB is extended pattern, first general serial is total
The pin 9 of line interface 310 is low level, and each converter passes through the second output end output signal.
Fig. 4 is refer to, the first output end includes：The OUT1A of first converter and the second converter in change-over circuit 330,
OUT1B, and the OUT1A of the 3rd converter and the 4th converter.Second output end includes：First converter in change-over circuit 330
With OUT2A, OUT2B of the second converter, and the OUT2A of the 3rd converter and the 4th converter.
The pin 2 of first USB 310 passes through the first output end and the matchmaker more than first of multimedia interface 340
Volume data pin pin9 is connected, and passes through second output end and the first bus data pin of the multimedia interface 340
Pin14 is connected.Specific circuit is connected as：The pin2 of first USB 310 and the second of the second converter is defeated
Inbound port INB is connected；Output port corresponding to second input port INB is the OUT1B or OUT2B of the second converter；Second turn
The OUT1B of parallel operation is connected with the pin9 of multimedia interface 340, the OUT2B of the second converter and pin14 of multimedia interface 340
It is connected.
The pin 3 of first USB 310 passes through the first output end and the matchmaker more than second of multimedia interface 340
Volume data pin pin7 is connected, and is connected by the second output end with the second bus data pin pin13 of multimedia interface 340.
Specific circuit is connected as：The pin2 of first USB 310 and the second converter first input port INA phases
Even；Output port corresponding to the first input port INA of second converter is OUT1A or OUT2A；The OUT1A of second converter
It is connected with the pin7 of multimedia interface 340, the OUT2A of the second converter is connected with the pin13 of multimedia interface 340.
The pin 6 of first USB 310 passes through the second output end and the matchmaker more than first of multimedia interface 340
Volume data pin pin9 is connected；The pin 7 of first USB 310 passes through the second output end and multimedia interface
340 the second multi-medium data pin pin7 is connected.Specific circuit is connected as：First USB 310
Pin6 is connected with the second input port INB of the first converter；Output end corresponding to second input port INB of the first converter
Mouth is OUT1B or OUT2B；The OUT2B of first converter is connected with the pin9 of multimedia interface 340；First USB
The pin7 of interface 310 is connected with the first input port INA of the first converter；INA pairs of the first input port of first converter
The output port answered is OUT1A or OUT2A；The OUT2A of first converter is connected with the pin7 of multimedia interface 340；First turn
The OUT1A and OUT1B of parallel operation are hanging.
The audio-visual control that the pin 8 of first USB 310 passes through the second output end and multimedia interface 340
Bus pin pin19 is connected.Specific circuit is connected as：The pin8 and the 4th converter of first USB 310
First input port INA be connected；Output port corresponding to the first input port INA of 4th converter be OUT1A or
OUT2A；The OUT2A of 4th converter is connected with the pin19 of multimedia interface 340, and the OUT1A of the 4th converter is hanging.
The audio-visual control that the pin 10 of first USB 310 passes through the first output end and multimedia interface 340
Total spool pin19 pin are made to be connected；It is connected by the second output end with the identity pin pin16 of multimedia interface 340.Specifically
Circuit be connected as：The pin10 of first USB 310 is connected with the first input port INA of the 3rd converter；
Output port corresponding to the first input port INA of 3rd converter is OUT1A or OUT2A；The OUT2A of 3rd converter with
The pin16 of multimedia interface 340 is connected, and the OUT1A of the 3rd converter is connected with the pin19 of multimedia interface 340.
In specific implementation process, the first output end and the second output end correspond to the Bu Tong general of distinct electronic apparatuses respectively
Serial bus interface.First output end is used for standard type USB (the Micro USB for meeting 5pin
Connector), the second output end is used for the extended pattern USB for meeting 11pin.When identification circuit 320 identifies
When the second USB for going out the electronic equipment of access is standard type, change-over circuit 330 is output control signals to, is controlled
Change-over circuit 330 processed passes through the first output end output signal；When identification circuit 320 identifies that the second of the electronic equipment of access leads to
With serial bus interface be extended pattern i.e. 11pin USBs when, output control signals to change-over circuit 330, control
Change-over circuit 330 processed passes through the second output end output signal.
Below by a specific example, the use process of the switching device provided the embodiment of the present application is carried out in detail
Explanation.Where it is assumed that the second USB of regular handset is 5pin Micro USB Connector, XX hands
Second USB of machine is Micro USB 11PIN Connector.
Step 1：The two the second of first USB of switching device and regular handset or XX mobile phones are general
Serial bus interface connects.
If access is connected to the first USB for regular handset, 5pin the second USB
Pin1~3, pin10, pin11, now the pin9 of the first USB is Floating states (because not accessing), now
Logic is that H is high level at pin9；If access is connected to first for XX mobile phones, 11pin the second USB
Pin1~11 of USB, now the pin9 accesses of the first USB are MHLGND, and logic is for L at pin9
Low level.
Step 2：Internal conversion circuit conversion.As the input control terminal Switch=H of converter, the Out1 of converter
Passage is the first output end gating, and as the input control terminal Switch=L of converter, the Out2 passages of converter are second defeated
Go out end gating, such identification circuit can be to identify the type of the second USB of mobile phone.
Refer to Fig. 4, when regular handset connects, pin 9=H so that all Out1 channel conductives of Switch=H,
Micro USB Connector pin2,3,4 are respectively defined as MHL-, MHL+, eCBUS-S, pin9 with HDMI ends, 7,
19 connections.
Conversely, when XX mobile phones connect, pin 9=L are so that Switch=L, all Out2 channel conductives, Micro
USB 11PIN Connector pin6,7,8 are respectively defined as MHL-, MHL+, eCBUS-S, pin9 with HDMI ends, 7,
19 connections；Micro USB 11PIN Connector pin2,3,10 are respectively defined as USB-, USB+, ID, with HDMI ends
Pin14,13,16 connect.
MHL and USB is realized in the Micro USB 11PIN Connector that the embodiment of the present application provides while is led to
News, the pin13 at HDMI ends, 14,16 are defined as USB+, USB-, ID, in order to the original definition at HDMI ends distinguish (CEC, NC,
SDA the second converter using CD_Sense gating change-over circuits) is also needed.
Pass through one or more of the embodiment of the present application technical scheme, it is possible to achieve following one or more technology effects
Fruit：
By providing a kind of switching device for including the first USB and multimedia interface, and in the switching
Dress centers an identification circuit and change-over circuit, when the first USB and the second general serial of electronic equipment
When EBI is connected, the type of the second USB is identified by identification circuit, and outputs control signals to and turns
Circuit is changed, control change-over circuit selects the first output end corresponding with the type of the second USB or the second output
Hold output signal so that switching device can be directed to different USBs, using different output end output signals,
The USB of 11 pins is can be applied not only to, the standard universal serial bus that can be applicable to 5pin connects
Mouthful, the technical problem for the electronic equipment that interface is 11pin, increase turn can not be applied to by solving MHL connecting lines in the prior art
The scope of application of connection device.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (5)
- A kind of 1. switching device, it is characterised in that including：First USB；Identification circuit, it is connected with first USB；The identification circuit includes：First resistor, described The both ends of one resistance are connected with the pin 9 and pin 1 of first USB respectively, wherein described first is general The pin 1 of serial bus interface is power line pin；Second resistance, one end and the pin of first USB 9 are connected, and the other end is connected with change-over circuit；Change-over circuit, comprising the first output end, the second output end, the input of the change-over circuit and first general serial The output end of EBI and the identification circuit is connected；The change-over circuit also includes：At least four converters；Each conversion The input control terminal of device is connected with the pin 9 of first USB；Multimedia interface, it is connected with first output end and the second output end；Wherein, when first USB is connected with the second USB of electronic equipment, institute The type that identification circuit is used to identify second USB is stated, and outputs control signals to the conversion electricity Road, control the change-over circuit select first output end corresponding with the type of second USB or The second output end output signal, including：When second USB is standard type, the pin 9 of first USB is height Level, each converter pass through the first output end output signal；When second USB is expansion During exhibition type, the pin 9 of first USB is low level, and each converter exports by described second Hold output signal.
- 2. switching device as claimed in claim 1, it is characterised in that the pin 2 of first USB is logical First output end is crossed with the first multi-medium data pin of the multimedia interface to be connected, by second output end with First bus data pin of the multimedia interface is connected；The pin 3 of first USB pass through first output end and the multimedia interface more than second Media data pin is connected, and is connected by second output end with the second bus data pin of the multimedia interface.
- 3. switching device as claimed in claim 1, it is characterised in that the pin 6 of first USB is logical Second output end is crossed with the first multi-medium data pin of the multimedia interface to be connected；The pin 7 of first USB pass through second output end and the multimedia interface more than second Media data pin is connected.
- 4. switching device as claimed in claim 1, it is characterised in that the pin 8 of first USB is logical Second output end is crossed with the audio-visual controlling bus pin of the multimedia interface to be connected；The pin 10 of first USB is audio-visual by first output end and the multimedia interface Controlling bus pin is connected；It is connected by second output end with the identity pin of the multimedia interface.
- 5. the switching device as described in any in Claims 1 to 4, it is characterised in that first USB Include 11 pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194474.9A CN104809091B (en) | 2015-04-21 | 2015-04-21 | A kind of switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194474.9A CN104809091B (en) | 2015-04-21 | 2015-04-21 | A kind of switching device |
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| Publication Number | Publication Date |
|---|---|
| CN104809091A CN104809091A (en) | 2015-07-29 |
| CN104809091B true CN104809091B (en) | 2017-11-14 |
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| CN201510194474.9A Expired - Fee Related CN104809091B (en) | 2015-04-21 | 2015-04-21 | A kind of switching device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6610303B2 (en) * | 2016-02-02 | 2019-11-27 | セイコーエプソン株式会社 | Conversion device |
| CN109541434B (en) * | 2018-11-07 | 2021-02-23 | 广州三星通信技术研究有限公司 | Test circuit and test method for electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104081368A (en) * | 2011-04-11 | 2014-10-01 | 快捷半导体公司 | Mobile device automatic detection apparatus and method |
| CN104090855A (en) * | 2014-06-09 | 2014-10-08 | 青岛海信移动通信技术股份有限公司 | Method and device for making USB (universal serial bus) mode and MHL (mobile high-definition link) mode of USB interface compatible |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102012937B1 (en) * | 2013-03-04 | 2019-08-22 | 삼성전자주식회사 | Apparatus and method for connecting an external device in a portable terminal |
| KR102048222B1 (en) * | 2013-05-21 | 2019-11-25 | 삼성전자주식회사 | Apparatus and method for recognizing an external device in a communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104081368A (en) * | 2011-04-11 | 2014-10-01 | 快捷半导体公司 | Mobile device automatic detection apparatus and method |
| CN104090855A (en) * | 2014-06-09 | 2014-10-08 | 青岛海信移动通信技术股份有限公司 | Method and device for making USB (universal serial bus) mode and MHL (mobile high-definition link) mode of USB interface compatible |
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| CN104809091A (en) | 2015-07-29 |
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