CN202818475U - A USB interface-based audio/video converter - Google Patents
A USB interface-based audio/video converter Download PDFInfo
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- CN202818475U CN202818475U CN 201220366175 CN201220366175U CN202818475U CN 202818475 U CN202818475 U CN 202818475U CN 201220366175 CN201220366175 CN 201220366175 CN 201220366175 U CN201220366175 U CN 201220366175U CN 202818475 U CN202818475 U CN 202818475U
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Abstract
The utility model discloses a USB interface-based audio/video converter comprising a USB interface, a USB concentrator module connected with the USB interface for output of A and B paths of USB signals , an image decoding and converting module decoding the A-path USB signals and converting the A-path signals to HDMI and VGA signals, an HDMI signal output interface, a VGA signal output interface, a storage module connected with the image decoding and converting module, an audio conversion module performing modulus separation on the B-path signals and generating analog audio signals and digital audio signals, an audio output interface connected with the audio conversion module, and a power module. The USB interface-based audio/video converter is capable of converting the USB signals to the HDMI and VGA signals and the audio signals, can be applied to a CRT, a projector and a flat-panel display, can be applied commercially to a projector, a POS system and the like, requires no additional power source, is more flexible to use, and provides great convenience to users.
Description
Technical field
The utility model relates to audio-video converter, relates in particular to a kind of USB interface-based audio-video converter that usb signal can be converted to HDMI and VGA signal.
Background technology
The main interface of computer output video mainly contains: VGA, RGB, S-Video, TV-OUT interface, these interfaces will take the cabinet draw-in groove, are unfavorable for the miniaturization of equipment.Market is needed badly a kind of, and computer video is exported by USB interface, usb signal is converted to the transducer that HDMI and VGA signal are play at display, HDTV (High-Definition Television), projecting apparatus again.
The utility model content
The utility model is the problems referred to above that will solve prior art, proposes a kind of USB interface-based audio-video converter that usb signal can be converted to HDMI and VGA signal.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is a kind of USB interface-based audio-video converter of design, comprises in order to connect the USB interface of transmitting-receiving usb signal with host computer, connect USB interface in order to the A road usb signal that described usb signal expanded to the same standard of two-way and the usb hub module of B road usb signal, what connect the usb hub module converts the image decoding modular converter of HDMI and VGA signal in order to described A road usb signal is decoded, the HDMI signal output interface and the VGA signal output interface that connect the image decoding modular converter, connect the image decoding modular converter in order to deposit the memory module of view data, connect the usb hub module and separate the audio conversion module that generates simulated audio signal and digital audio and video signals in order to B road usb signal is carried out modulus, connect audio conversion module in order to export the audio output interface of described simulated audio signal and digital audio and video signals, and to the power module of each module for power supply.
Described audio conversion module connects an audio frequency input module, and the audio signal of its input is converted to usb signal and is transferred to host computer by usb hub module and USB interface.
The electric power incoming line of described power module connects USB interface.
Described power module also connects a power supply circumscription socket that is used for inputting outside 5 volts of DC power supply.
Compared with prior art, the utility model can be converted to usb signal HDMI and VGA signal and audio signal, and compatible CRT, projector and flat-panel monitor are supported commercial the use such as projector, POS system etc., and be need not to connect in addition power supply.Increase the use flexibility, be very easy to the user.
Description of drawings
Below in conjunction with drawings and Examples the utility model is made detailed explanation, wherein:
Fig. 1 is the theory diagram of the utility model preferred embodiment;
Fig. 2 is the audio output interface circuit diagram of the utility model preferred embodiment;
Fig. 3 is the circuit diagram of the usb hub module of the utility model preferred embodiment;
Fig. 4 is the image decoding modular converter video input functional areas of the utility model preferred embodiment;
Fig. 5 is the circuit diagram of the audio conversion module of the utility model preferred embodiment;
Fig. 6 is the HDMI signal output interface of the utility model preferred embodiment and the circuit diagram of VGA signal output interface;
Fig. 7 is the circuit diagram of the memory module of the utility model preferred embodiment;
Fig. 8 is the image decoding modular converter power management district of the utility model preferred embodiment;
Fig. 9 is the circuit diagram of the audio input interface of the utility model preferred embodiment;
Figure 10 is the circuit diagram of the power module of the utility model preferred embodiment;
Figure 11 is the power supply circumscription socket of the utility model preferred embodiment.
Embodiment
The utility model has disclosed a kind of USB interface-based audio-video converter, referring to the theory diagram shown in Fig. 1, it comprises in order to connect the USB interface of transmitting-receiving usb signal with host computer, connect USB interface in order to the A road usb signal that described usb signal expanded to the same standard of two-way and the usb hub module of B road usb signal, what connect the usb hub module converts the image decoding modular converter of HDMI and VGA signal in order to described A road usb signal is decoded, the HDMI signal output interface and the VGA signal output interface that connect the image decoding modular converter, connect the image decoding modular converter in order to deposit the memory module of view data, connect the usb hub module and generate simulated audio signal in order to B road usb signal is carried out digitizing separation, the audio conversion module of I2S audio signal and digital SPDIF signal, connect audio conversion module in order to export the audio output interface of described simulated audio signal and digital audio and video signals, and to the power module of each module for power supply.
Fig. 3 shows the circuit diagram of the usb hub module of preferred embodiment, and P3 is USB interface among the figure.The computer expert crosses the operation drive software, its audio-video signal is processed into usb signal, then transmitted by the P3 interface, P3 is transferred to usb hub U10 with usb signal, the model of U10 is USB2514B, usb signal can be divided into four tunnel outputs, and present embodiment has only been used Downstream 1 and Downstream 2 passages, Downstream 1 passage is exported described A road usb signal, and Downstream 2 passages are exported described B road usb signal.The image decoding modular converter has adopted the USB2.0 high speed image process chip UFX6000 of a high integration, and it can be processed usb signal and convert HDMI signal and VGA signal imitation signal to.Because the large pin of UFX6000 chip is many, in circuit diagram, it is come separately picture by functional areas, comprise U5A, U5B, U5C, U5D four parts, the U5C video input functional areas among Fig. 4 connect U10, receive A road usb signal.U5D among Fig. 8 is each Power supply district of image processor, in order to receive 1.2V, 1.8V, 3.3V power supply, gives whole master chip power supply and internal wiring ground connection.Shown in Fig. 7 is the circuit diagram of the memory module of preferred embodiment, and U6 is the storage chip of caching image data among the figure, and U6 is connected with U5A, and U5A is the addressing function district, carries out addressing between U5A and the U6, makes the image decoding conversion chip can read view data among the U6.U5B among Fig. 6 is the output function district, and it connects HDMI signal output interface P1, with output HDMI signal; U5B also connects VGA signal output interface P2, with outputting VGA signal.Shown in Fig. 5 is the circuit diagram of the audio conversion module of preferred embodiment, U14 is the audio conversion chip, it connects usb hub U10, receiving B road usb signal, and usb signal conversion in B road is separated into voiceband data signal and the digital SPDIF signal of simulated audio signal, I2S.SPDIF pin output I2S and the SPDIF signal of U14.Fig. 2 shows and connects audio output interface figure, and J6 is in order to export simulated audio signal.
In preferred embodiment, audio conversion module connects an audio frequency input module, and the J5 among Fig. 9 is audio input interface, and the audio signal of its input is converted into usb signal and is transferred to host computer by usb hub module and USB interface.
In preferred embodiment, the electric power incoming line of power module connects USB interface, drives each module work with the electric energy of USB interface.Figure 10 shows the circuit diagram of power module, and the 5V direct current is transformed to respectively 1.2V, 1.8V, 3.3V direct current among the figure.
For improving the on-load ability of power module, in another embodiment, power module also connects a power supply circumscription socket that is used for inputting outside 5 volts of DC power supply.Referring to Figure 11, J1 is the power supply circumscription socket.
There is following technical characterstic the utility model part:
1. two-path video output port: HDMI port and VGA port;
2. signal input sources is usb signal+Audio IN, uses USB to connect, and does not take the D-Sub terminal, and the display of expansion does not need to increase extra video card simultaneously;
3. compatible CRT, projector and flat-panel monitor; And support that main demonstration, expansion show, mirror image shows; Can transmit DVD film and computer picture, the display desktop that is multiplied can be increased work efficiency.By the driving of computer software, audio-video signal can connect the utility model in each USB output interface by exporting in 8 USB output interfaces, just can accomplish to connect 8 displays;
4. simple and easy installation and use USB2.0, USB3.0 easily add display device;
5. can regulate as required the screen display support and be up to 1920 * 1080 refreshing frequency 60HZ, 32 true color (comprising 480i/p, 576i/p, 720i/P, 1080I and 1080P); Minimum support: 1024 x 786 (refreshing frequency 60,70,75,32 true color of 85Hz);
6. support HDMI1.3; The super low-power consumption lossless compressiong;
7. can be with same picture extension value to plural screen, after arranging through overdriving, this production interchange picture and PC out can show two different pictures, and each screen operator is unaffected mutually simultaneously, do not affect the display quality of extendable display screen;
8. non-transformer design can directly with PC end USB power supply, also can be powered by external 5V;
9. support commercial use such as projector, POS system etc.
Above embodiment is only for illustrating non-providing constraints.Anyly do not break away from the application's spirit and category, and to its equivalent modifications of carrying out or change, all should be contained among the application's the claim scope.
Claims (4)
1. a USB interface-based audio-video converter is characterized in that: comprise in order to connect the USB interface of transmitting-receiving usb signal with host computer, connect USB interface in order to the A road usb signal that described usb signal expanded to the same standard of two-way and the usb hub module of B road usb signal, what connect the usb hub module converts the image decoding modular converter of HDMI and VGA signal in order to described A road usb signal is decoded, the HDMI signal output interface and the VGA signal output interface that connect the image decoding modular converter, connect the image decoding modular converter in order to deposit the memory module of view data, connect the usb hub module and separate the audio conversion module that generates simulated audio signal and digital audio and video signals in order to B road usb signal is carried out modulus, connect audio conversion module in order to export the audio output interface of described simulated audio signal and digital audio and video signals, and to the power module of each module for power supply.
2. USB interface-based audio-video converter as claimed in claim 1, it is characterized in that: described audio conversion module connects an audio input interface, and the audio signal of its input is converted to usb signal and is transferred to host computer by usb hub module and USB interface.
3. USB interface-based audio-video converter as claimed in claim 1 is characterized in that: the electric power incoming line connection USB interface of described power module.
4. USB interface-based audio-video converter as claimed in claim 3 is characterized in that: described power module also connects a power supply circumscription socket that is used for inputting outside 5 volts of DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366175 CN202818475U (en) | 2012-07-27 | 2012-07-27 | A USB interface-based audio/video converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366175 CN202818475U (en) | 2012-07-27 | 2012-07-27 | A USB interface-based audio/video converter |
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| Publication Number | Publication Date |
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| CN202818475U true CN202818475U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220366175 Expired - Fee Related CN202818475U (en) | 2012-07-27 | 2012-07-27 | A USB interface-based audio/video converter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997614A (en) * | 2014-03-28 | 2014-08-20 | 惠州市德赛西威汽车电子有限公司 | Vehicle-mounted USB (Universal Serial Bus) and AUX_IN (Auxiliary Input) integrated device |
| CN104424911A (en) * | 2013-08-26 | 2015-03-18 | 英业达科技有限公司 | VGA interface protection circuit |
| CN104571277A (en) * | 2013-10-17 | 2015-04-29 | 上海科斗电子科技有限公司 | Portable computer peripheral extension equipment |
| CN106484345A (en) * | 2015-08-26 | 2017-03-08 | 天津三星电子有限公司 | A kind of display terminal |
| CN108710481A (en) * | 2018-05-17 | 2018-10-26 | 深圳市柏尚科技有限公司 | A kind of wired same screen systems of USB |
-
2012
- 2012-07-27 CN CN 201220366175 patent/CN202818475U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424911A (en) * | 2013-08-26 | 2015-03-18 | 英业达科技有限公司 | VGA interface protection circuit |
| CN104424911B (en) * | 2013-08-26 | 2016-08-31 | 英业达科技有限公司 | Video graphics array (VGA) interface protective circuit |
| CN104571277A (en) * | 2013-10-17 | 2015-04-29 | 上海科斗电子科技有限公司 | Portable computer peripheral extension equipment |
| CN103997614A (en) * | 2014-03-28 | 2014-08-20 | 惠州市德赛西威汽车电子有限公司 | Vehicle-mounted USB (Universal Serial Bus) and AUX_IN (Auxiliary Input) integrated device |
| CN106484345A (en) * | 2015-08-26 | 2017-03-08 | 天津三星电子有限公司 | A kind of display terminal |
| CN106484345B (en) * | 2015-08-26 | 2019-10-01 | 天津三星电子有限公司 | A kind of display terminal |
| CN108710481A (en) * | 2018-05-17 | 2018-10-26 | 深圳市柏尚科技有限公司 | A kind of wired same screen systems of USB |
| CN108710481B (en) * | 2018-05-17 | 2022-02-08 | 深圳市柏尚科技有限公司 | USB wired co-screen system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20170727 |