CN205071173U - Signal conversion system based on USBType -C interface - Google Patents
Signal conversion system based on USBType -C interface Download PDFInfo
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- CN205071173U CN205071173U CN201520732460.3U CN201520732460U CN205071173U CN 205071173 U CN205071173 U CN 205071173U CN 201520732460 U CN201520732460 U CN 201520732460U CN 205071173 U CN205071173 U CN 205071173U
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Abstract
The utility model provides an audio and video signal transition system based on USB type -C interface, including host system, the analytic module of pin and audio frequency and video conversion module, the analytic module of pin is passed through host system with audio frequency and video conversion module is connected, audio frequency and video conversions module with the analytic module of pin is connected, the USBType -C interface is equipped with CC end, DP video signal end, audio signal end, D+ end and D - end, the analytic module of pin with CC holds the connection, audio frequency and video conversions module simultaneously with DP video signal end, audio signal hold the connection, host system is connected with D+ end, D - end simultaneously. Adopting this technical scheme, and only need utilizing a pair of high -speed differential pair line transmission, just can accomplish the video signal conversion transmission, entire system supports positive and negative inserting, convenient to use.
Description
Technical field
The utility model relates to conversion system technology field, particularly relates to a kind of signal translating system based on USBType-C interface.
Background technology
USB interface typeA in the past and typeB two kinds, agreement develops into present USB3.0 by USB1.0 the earliest, and be integrated with one group of differential signal inside these two kinds of interfaces, transmission speed is increased to 5Gbps by initial 1.5Mbps.But owing to only having a pair differential signal, do not provide again related protocol to define pin, therefore positive anti-plug can not be supported, and transmission speed is at below 5Gbps, as needs carry out transmission tone vision signal by this differential pair line, need, in upper computer end, associated drives software is installed, due to transmission speed, the highlyest can only support 1080P video.
Along with the fast development of USB interface, a kind of less, thinner, transmission rate is faster, passage more flexibly new interface become urgent demand, new USBType-C24 pin, support positive anti-plug and there are four pairs of high-speed-differentials to pin, often pair of differential pair channel speed can reach 10Gbps, and wall scroll differential pair just can transmit 4K HD video.But be all general-purpose interface for current terminal equipment, there is no corresponding USBType-C interface, so how DP (DisplayPort) signal extraction in novel USBType-C is out converted to common high-definition signal such as HDMI (HighDefinitionMultimediaInterface, HDMI (High Definition Multimedia Interface)) signal to become popular demand.General in order to meet the quality of HDMI signal converting transmission, prior art generally transmits the vision signal of resolution at more than 1080p by pair differential pair line of two in USBType-C interface, and high-speed-differential line in USBType-C is very limited, how to utilize less high-speed-differential line just to realize high-definition video signal converting transmission, become the direction of development.
Utility model content
For above technical problem, the utility model provides a kind of signal translating system based on USBType-C interface, and only need to utilize a pair high-speed-differential to line, DP signal extraction in USBType-C is out converted to common high-definition signal, the positive anti-plug of whole system support, easy to use, export the interface being applicable to existing conventional terminal equipment.
To this, the technical scheme that the utility model adopts is:
A kind of signal translating system based on USBType-C interface, comprise main control module, pin parsing module, audio frequency and video conversion module and power module, described pin parsing module is connected with described audio frequency and video conversion module by described main control module, and described audio frequency and video conversion module is connected with described pin parsing module; Described USBType-C interface is provided with CC end, DP vision signal end, audio signal end, D+ end and D-end, described pin parsing module is held with described CC and is connected, described audio frequency and video conversion module is connected with described DP vision signal end, audio signal end simultaneously, described main control module is held with D+ simultaneously, D-holds and is connected, and described power module is connected with main control module, pin parsing module, audio frequency and video conversion module, USBType-C interface respectively.
In technique scheme, the described signal translating system based on USBType-C interface receives the DP vision signal of emission source by the DP vision signal termination of USBType-C receiving terminal male, the audio signal transmitted by audio signal end.Agreement on described CC end is resolved through pin parsing module, judge that female pin exports difference and defines and produce interruption and I2C agreement, notice main control module, main control module is after related software process, reinform audio frequency and video chip and start conversion, and draw high HPD pin, this operation information of beginning is fed back to MCU.Adopt this technical scheme, the DP signal extraction in Type-C is out converted to common high-definition signal, and the positive anti-plug of whole system support is easy to use, is applicable to the interface of existing conventional terminal equipment; And only need to utilize a pair high-speed-differential to line transmission video signal, use two common low-speed expansion functional line transmission of audio in addition, for USBType-C interface saves the resource of valuable high-speed-differential line.
As further improvement of the utility model, described power module comprises power supply and selects handover module and supply module, and described power supply selects handover module to be connected with supply module, and described USBType-C interface is provided with V
bUSend and V
cONend, described power supply select handover module respectively with V
bUSend, V
cONend connects.Native system, before not completing pin and resolving, is held by Vcon and is powered to native system, by V after completing
bUSend power supply.
As further improvement of the utility model, the described signal translating system based on USBType-C interface also comprises HDMI output interface, and described audio frequency and video conversion module is connected with described HDMI output interface.
As further improvement of the utility model, described DP vision signal end comprises DP_RX_LN0N end and DP_RX_LN0P end; Described audio signal end comprises AUX+ end and AUX-end.DP_RX_LN0N end is difference negative terminal (N, negative), and DP_RX_LN0P is difference anode (P, positive).
As further improvement of the utility model, described main control module comprises MCU unit.
As further improvement of the utility model, described audio frequency and video conversion module comprises video and transforms chip, and the model that described video transforms chip is ANX7737 or ANX7747.
As further improvement of the utility model, described pin parsing module comprises FUSB300 unit or AN7402.
Compared with prior art, the beneficial effects of the utility model are:
Adopt the technical solution of the utility model, by the DP signal extraction in USBType-C out for being converted to common HDMI signal, the positive anti-plug of whole system support, easy to use, be applicable to the existing terminal presentation facility with HDMI; And only need to utilize a pair high-speed-differential to line transmission video signal, use two common low-speed expansion functional line acoustics frequently in addition, for USBType-C interface saves the resource of valuable high-speed-differential line.
Accompanying drawing explanation
Fig. 1 is the theory diagram of a kind of embodiment of the utility model.
Fig. 2 is the structural representation of a kind of embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, preferably embodiment of the present utility model is described in further detail.
As shown in Figure 1, a kind of signal translating system based on USBType-C interface, comprise main control module, pin parsing module, audio frequency and video conversion module and power module, described pin parsing module is connected with described audio frequency and video conversion module by described main control module, and described audio frequency and video conversion module is connected with described pin parsing module; Described USBType-C interface is provided with CC end, DP vision signal end, audio signal end, D+ end and D-end, described pin parsing module is held with described CC and is connected, described audio frequency and video conversion module is connected with described DP vision signal end, audio signal end simultaneously, described main control module is held with D+ simultaneously, D-holds and is connected, and described power module is connected with main control module, pin parsing module, audio frequency and video conversion module, USBType-C interface respectively.Described audio frequency and video conversion module comprises video and transforms chip, and the model that described video transforms chip is ANX7737, and described main control module comprises MCU unit, and described pin parsing module comprises FUSB300 unit.The described signal translating system based on USBType-C interface also comprises HDMI output interface, and described audio frequency and video conversion module is connected with described HDMI output interface.
As shown in Figure 2, on the basis of the above, described power module comprises power supply and selects handover module and supply module Power, and described power supply selects handover module to be connected with supply module Power, and described USBType-C interface is provided with V
bUSend and V
cONend, described power supply select handover module respectively with V
bUSend, V
cONend connects.Described DP vision signal end comprises DP_RX_LN0N end and DP_RX_LN0P end; Described audio signal end comprises AUX+ end and AUX-end.Described audio frequency and video conversion module ANX7737 holds with DP_RX_LN0N respectively, DP_RX_LN0P holds, AUX+ holds and AUX-holds and is connected.
DFP (DownstreamFacingPort the sends female end) port table of USBType-C is as shown in table 1.
Table 1USBType-C sends female end chart
UFP (UpstreamFacingPort the receives male end) port table of USBType-C is as shown in table 2.
Table 2USBType-C receives male end chart
During work, USBType-C output DFP, according to agreement on the CC pin of TypeC, determines that respective pin exports signal accurately, preferentially determines that CC pin is at A5, or B5 position.TypeC receiving terminal UFP by drawing 5.1K resistance in CC underfooting, to show differentiation.The positive anti-plug of such whole system support.
After DFP determines CC pin, just can determine to remain other pin, A11, A10 of corresponding UFP, send the A8 of DP vision signal and corresponding UFP, the audio signal of B8 transmission.Agreement on CC pin is resolved through USB – PDFUSB300 chip, judges female pin definitions and produces interruption, notice MCU.Have no progeny in receiving, MCU reads the suitable content of registers of FUSB300 by I2C bus, understands details, and after related software process, notice ANX7737 can start conversion.Once ANX7737 completes conversion just draw high HPD pin, this operation information of beginning is fed back to MCU, meanwhile ANX7737 reads by I2C bus the EDID information that HDMI holds display terminal.
This system utilizes the conversion of a pair differential lines, namely complete and DP signal is converted into HDMI signal, for USBType-C interface saves the resource of valuable high-speed-differential line.
The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection range of the present utility model.
Claims (7)
1. the signal translating system based on USBType-C interface, it is characterized in that: comprise main control module, pin parsing module, audio frequency and video conversion module and power module, described pin parsing module is connected with described audio frequency and video conversion module by described main control module, and described audio frequency and video conversion module is connected with described pin parsing module; Described USBType-C interface is provided with CC end, DP vision signal end, audio signal end, D+ end and D-end, described pin parsing module is held with described CC and is connected, described audio frequency and video conversion module is connected with described DP vision signal end, audio signal end simultaneously, described main control module is held with D+ simultaneously, D-holds and is connected, and described power module is connected with main control module, pin parsing module, audio frequency and video conversion module, USBType-C interface respectively.
2. the signal translating system based on USBType-C interface according to claim 1, it is characterized in that: described power module comprises power supply and selects handover module and supply module, described power supply selects handover module to be connected with supply module, and described USBType-C interface is provided with V
bUSend and V
cONend, described power supply select handover module respectively with V
bUSend, V
cONend connects.
3. the signal translating system based on USBType-C interface according to claim 1 and 2, it is characterized in that: the described signal translating system based on USBType-C interface also comprises HDMI output interface, described audio frequency and video conversion module is connected with described HDMI output interface.
4. the signal translating system based on USBType-C interface according to claim 3, is characterized in that: described DP vision signal end comprises DP_RX_LN0N end and DP_RX_LN0P end; Described audio signal end comprises AUX+ end and AUX-end.
5. the signal translating system based on USBType-C interface according to claim 4, is characterized in that: described main control module comprises MCU unit.
6. the signal translating system based on USBType-C interface according to claim 5, is characterized in that: described audio frequency and video conversion module comprises video and transforms chip, and the model that described video transforms chip is ANX7737 or ANX7747.
7. the signal translating system based on USBType-C interface according to claim 6, is characterized in that: described pin parsing module comprises FUSB300 unit or AN7402.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520732460.3U CN205071173U (en) | 2015-09-21 | 2015-09-21 | Signal conversion system based on USBType -C interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520732460.3U CN205071173U (en) | 2015-09-21 | 2015-09-21 | Signal conversion system based on USBType -C interface |
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|---|---|
| CN205071173U true CN205071173U (en) | 2016-03-02 |
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| CN201520732460.3U Expired - Fee Related CN205071173U (en) | 2015-09-21 | 2015-09-21 | Signal conversion system based on USBType -C interface |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720815A (en) * | 2016-04-11 | 2016-06-29 | 惠州市德泓科技有限公司 | Power supply circuit applied in USB Type-c expanding device |
| CN105867874A (en) * | 2016-03-25 | 2016-08-17 | 乐视控股（北京）有限公司 | A user device |
| CN105898251A (en) * | 2016-04-28 | 2016-08-24 | 王东 | Photoelectric hybrid transmission device integrating DP/USB3.1/HDMI/PD functions and implemented through TYPE C interface, and conversion method |
| CN106021150A (en) * | 2016-04-29 | 2016-10-12 | 青岛海信电器股份有限公司 | Type-C interface equipment, communication system and communication method |
| CN107105175A (en) * | 2017-05-04 | 2017-08-29 | 北京小鸟看看科技有限公司 | A kind of interface circuit, signal transmission apparatus and method |
| WO2018014474A1 (en) * | 2016-07-20 | 2018-01-25 | 中兴通讯股份有限公司 | Audio switching method, device, terminal, earpiece and storage medium |
| CN109581072A (en) * | 2018-11-30 | 2019-04-05 | 贸联电子(昆山)有限公司 | Cable high frequency measurement equipment and the method for measuring cable |
| US10761553B2 (en) | 2016-06-17 | 2020-09-01 | Qualcomm Incorporated | Universal serial bus (USB) cable type detection and control techniques |
-
2015
- 2015-09-21 CN CN201520732460.3U patent/CN205071173U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867874A (en) * | 2016-03-25 | 2016-08-17 | 乐视控股（北京）有限公司 | A user device |
| CN105720815A (en) * | 2016-04-11 | 2016-06-29 | 惠州市德泓科技有限公司 | Power supply circuit applied in USB Type-c expanding device |
| CN105898251A (en) * | 2016-04-28 | 2016-08-24 | 王东 | Photoelectric hybrid transmission device integrating DP/USB3.1/HDMI/PD functions and implemented through TYPE C interface, and conversion method |
| CN106021150A (en) * | 2016-04-29 | 2016-10-12 | 青岛海信电器股份有限公司 | Type-C interface equipment, communication system and communication method |
| CN106021150B (en) * | 2016-04-29 | 2019-02-15 | 青岛海信电器股份有限公司 | Type-C interface equipment, communication system and communication means |
| US10761553B2 (en) | 2016-06-17 | 2020-09-01 | Qualcomm Incorporated | Universal serial bus (USB) cable type detection and control techniques |
| WO2018014474A1 (en) * | 2016-07-20 | 2018-01-25 | 中兴通讯股份有限公司 | Audio switching method, device, terminal, earpiece and storage medium |
| CN107105175A (en) * | 2017-05-04 | 2017-08-29 | 北京小鸟看看科技有限公司 | A kind of interface circuit, signal transmission apparatus and method |
| CN107105175B (en) * | 2017-05-04 | 2019-10-18 | 北京小鸟看看科技有限公司 | A kind of interface circuit, signal transmission apparatus and method |
| CN109581072A (en) * | 2018-11-30 | 2019-04-05 | 贸联电子(昆山)有限公司 | Cable high frequency measurement equipment and the method for measuring cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20160921 |
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| CF01 | Termination of patent right due to non-payment of annual fee |