CN103235705A - Multi-user wireless projection method and projection gateway - Google Patents
Multi-user wireless projection method and projection gateway Download PDFInfo
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- CN103235705A CN103235705A CN2013100615815A CN201310061581A CN103235705A CN 103235705 A CN103235705 A CN 103235705A CN 2013100615815 A CN2013100615815 A CN 2013100615815A CN 201310061581 A CN201310061581 A CN 201310061581A CN 103235705 A CN103235705 A CN 103235705A
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Abstract
The invention discloses a multi-user wireless projection method and a projection gateway. User-side wireless projection management software and a wireless projection gateway are included, wherein user-side multimedia equipment can be a PC (Personable Computer) provided with a wireless network card or an Android mobile device, the user side and the wireless projection gateway are controlled by the wireless projection management software to achieve WiFi (Wireless Fidelity) wireless communication, and the wireless projection gateway is connected to an existing wired projector through a VGA (Video Graphic Array) interface to achieve wireless projection, so that wireless projection of multiple users can be realized on the existing wired projector without re-purchasing a wireless projector.
Description
Technical field
The present invention relates to a kind of utility appliance field of projector, more specifically, relate to a kind of multi-user radio projecting method and projection gateway.
Background technology
Continuous progress, the also constantly development thereupon of wireless display technology along with society and science and technology, the wireless display instrument has received more and more users' concern, the wireless display instrument has application prospect extremely widely in key industrys such as education, commercial affairs, government's offices, but because the existing projector that possesses radio function is based on wireless local area network technology, it generally is high-end product, expensive, so the wireless display instrument can't be popularized always.And most of users have had wired projector, if want to use the wireless display function, then must buy the wireless display instrument again, have increased use cost, have caused waste simultaneously.
The Android system is because it is increased income, freely, and the application on mobile device more and more widely.The wireless display gateway not only supports traditional PC to realize wireless display, also supports the wireless display of Android mobile device.Therefore with the Android mobile device as user side, only need by shirtsleeve operation, just can realize wireless display, will greatly make things convenient for the user to share information on the mobile device (as mobile phone, PAD etc.).
Summary of the invention
The object of the invention provides and a kind ofly makes wired projector realize wireless display, and supports the multi-user radio projecting method of Android mobile device wireless display.
For achieving the above object, the present invention adopts following technical scheme:
A kind of multi-user radio projecting method, the user side multimedia equipment carries out radio communication by user side wireless display management software and wireless display gateway, and the wireless display gateway is connected to projector by the VGA interface.
Preferably, described wireless display gateway comprises button, communication module, processor, SD interface, USB interface, LCD interface, VGA module, power supply dress die change piece and 220V power interface;
The output terminal of described button, communication module, SD interface and USB interface links to each other with the processor input end respectively, the output terminal of processor links to each other with the input end of LCD interface, the output terminal of LCD interface links to each other with the VGA module, and the power transfer module that links to each other with the 220V power interface is each module for power supply.
Preferably, described communication module is the WIFI module; Processor is ARM Cortex A8 flush bonding processor; The VGA module is that core constitutes by FPGA and SDRAM; Embedded the Android system in the described SD card.
Preferably, described user side multimedia equipment is the mobile device that possesses the PC of wireless network card or have the Android system.
Preferably, the communication of described user side multimedia equipment and wireless display gateway adopts WIFI.
The user side multimedia equipment constantly obtains the video memory data and sends to the wireless display gateway by WIFI by the wireless display management software on the backstage; The camera shooting picture of user side Android mobile device can realize the wireless display function; User side Android mobile device can the controlled in wireless projected picture broadcast; Can be constituted by a plurality of users' projected picture in the projected picture, and can select certain user's picture to amplify.
The present invention also proposes a kind ofly will have line projection to be transformed into the multi-user radio projection gateway of wireless display for realizing, comprises button, communication module, processor, SD interface, USB interface, LCD interface, VGA module, power supply dress die change piece and 220V power interface;
The output terminal of described button, communication module, SD interface and USB interface links to each other with the processor input end respectively, the output terminal of processor links to each other with the input end of LCD interface, the output terminal of LCD interface links to each other with the VGA module, and the power transfer module that links to each other with the 220V power interface is each module for power supply.
Preferably, described communication module is the WIFI module; Processor is ARM Cortex A8 flush bonding processor; The VGA module is that core constitutes by FPGA and SDRAM; Embedded the Android system in the described SD card.
Compared with prior art, beneficial effect of the present invention is: only need the wireless display gateway is linked to each other with the existing wired projector by the VGA interface, wireless display management software on user side operation PC or the Android mobile device just can be realized wireless display, the Android mobile device can also be realized the wireless projection of camera shooting picture and projected picture is realized controlled in wireless simultaneously, made things convenient for the information interchange between the user, also provided cost savings simultaneously.
Description of drawings
Fig. 1 is the theory diagram of wireless display gateway.
Fig. 2 is wireless display entire system connection diagram.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing, but embodiments of the present invention are not limited to this.
As shown in Figure 2, a kind of multi-user radio projecting method, user side multimedia equipment 10 carries out the WIFI radio communication by user side wireless display management software and wireless display gateway 12, and wireless display gateway 12 is connected to the wireless display that can realize a plurality of users on the existing wired projector 11 by the VGA interface.Wherein user side multimedia equipment 10 can be PC or the Android mobile device that possesses wireless network card
As shown in Figure 1, described a kind of multi-user radio projection gateway, comprise button 1, WIFI module 2, ARM Cortex A8 flush bonding processor 3, SD interface 4, USB interface 5, LCD interface 6, VGA module 7,, power supply dress die change piece 8,220V power interface 9;
Described button 1, WIFI module 2, SD interface 4 and USB interface 5, output terminal link to each other with ARM Cortex A8 flush bonding processor 3 input ends respectively, ARM Cortex A8 flush bonding processor 3 output terminals link to each other with the input end of LCD interface 6, the output terminal of LCD interface 6 links to each other with VGA module 7, VGA module 7 is that core constitutes by FPGA and SDRAM, USB interface 4 can external USB flash disk storer, SD interface 4 inserts the SD card, and in the SD card, having embedded the Android system, the power supply that links to each other with 220V power interface 9 dress die change piece 8 is a module for power supply.
After the USB flash disk storer inserted USB interface 5, ARM Cortex A8 flush bonding processor 3 is the interior file type of identification USB flash disk storer automatically, and the data after will handling are then delivered to projector by the VGA interface and projected.
User side PC equipment need be installed the wireless display management software, and this software utilizes the api function of operating system to obtain the data of the current picture in the video memory, and sends to the wireless display gateway by WIFI.
The Android mobile device need be installed the wireless display management software, this software design approach is: make up Bitmap earlier, obtain the height-width of screen, carry out the screen printing image again, catch the data of core buffer then with ByteArrayOutputStream, toByteArray () is changed to the byte(byte with the circulation of screen picture data byte) array, enable thread again data are sent by socket.
After Android handheld device or PC connect by ICP/IP protocol and wireless display gateway, thread of wireless display gateways and starting is accepted view data, can obtain the real time data that handheld mobile device sends by readjustment preview function setPreviewCallback (streamIt) (wherein streamIt is the object of the interface of readjustment).The data that receive through ARM Cortex A8 embedded processing after, send projector to show by integrated VGA interface, upgrade picture displayed in the projector by handler simultaneously.
The camera data of described Android mobile device realize wireless display.The Android handheld device need be installed the wireless display management software, this software design approach is: define the camera-type that a surfaceView defines mobile device, in Activity, can obtain a Camera object by realizing the middle camera.open that opens camera that adds of OnSurfaceCreate () that the surfaceHodler.callBack interface rewrites.The preview subject of Camera is set.MCamera.setPreviewDisplay (holder); Holder is the holder of we surfaceView.Can pass through surfaceView.getHodler() obtain.The picture that so just can in surfaceView, show the preview of mobile device.
After the Android mobile device connects by WIFI and wireless display gateway, by readjustment mobile phone preview function: mCamera.setPreviewCallback (streamIt); The object of the interface of // streamIt readjustment.So just can obtain the real-time data of camera preview.What obtain is the data of ecosystem yuv format.
Call image.compressToJpeg() transfer yuv format view data data to the jpg form:
YuvImage?image?=?new?YuvImage(data,?ImageFormat.NV21,size.width,?size.height,?null);
Send projector to show by the VGA interface view data at last.
Above-described embodiments of the present invention do not constitute the restriction to protection domain of the present invention.Any modification of within spiritual principles of the present invention, having done, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (7)
1. a multi-user radio projecting method is characterized in that, the user side multimedia equipment carries out radio communication by user side wireless display management software and wireless display gateway, and the wireless display gateway is connected to projector by the VGA interface.
2. multi-user radio projecting method according to claim 1 is characterized in that, described wireless display gateway comprises button, communication module, processor, SD interface, USB interface, LCD interface, VGA module, power supply dress die change piece and 220V power interface;
The output terminal of described button, communication module, SD interface and USB interface links to each other with the processor input end respectively, the output terminal of processor links to each other with the input end of LCD interface, the output terminal of LCD interface links to each other with the VGA module, and the power transfer module that links to each other with the 220V power interface is each module for power supply.
3. multi-user radio projecting method according to claim 2 is characterized in that, described communication module is the WIFI module; Processor is ARM Cortex A8 flush bonding processor; The VGA module is that core constitutes by FPGA and SDRAM.
4. multi-user radio projecting method according to claim 1 is characterized in that, described user side multimedia equipment is the mobile device that possesses the PC of wireless network card or have the Android system.
5. multi-user radio projecting method according to claim 1 is characterized in that, the communication of described user side multimedia equipment and wireless display gateway adopts WIFI.
6. a multi-user radio projection gateway is characterized in that, comprises button, communication module, processor, SD interface, USB interface, LCD interface, VGA module, power supply dress die change piece and 220V power interface;
The output terminal of described button, communication module, SD interface and USB interface links to each other with the processor input end respectively, the output terminal of processor links to each other with the input end of LCD interface, the output terminal of LCD interface links to each other with the VGA module, and the power transfer module that links to each other with the 220V power interface is each module for power supply.
7. multi-user radio projecting method according to claim 6 is characterized in that, described communication module is the WIFI module; Processor is ARM Cortex A8 flush bonding processor; The VGA module is that core constitutes by FPGA and SDRAM; Embedded the Android system in the described SD card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310061581.5A CN103235705B (en) | 2013-02-27 | 2013-02-27 | Multi-user radio projecting method and projection gateway |
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| CN201310061581.5A CN103235705B (en) | 2013-02-27 | 2013-02-27 | Multi-user radio projecting method and projection gateway |
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| CN103235705A true CN103235705A (en) | 2013-08-07 |
| CN103235705B CN103235705B (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744197A (en) * | 2016-04-27 | 2016-07-06 | 苏州新雅电子有限公司 | Projection system |
| CN107147887A (en) * | 2017-05-04 | 2017-09-08 | 大连理工大学 | Wireless display method and device |
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| US20020060994A1 (en) * | 2000-11-17 | 2002-05-23 | Erno Kovacs | Transmission of carry-on objects using a wireless ad-hoc networking environment |
| CN1609780A (en) * | 2003-10-24 | 2005-04-27 | 微软公司 | Systems and methods for projecting content from computing devices |
| CN1987632A (en) * | 2005-12-20 | 2007-06-27 | 宏碁股份有限公司 | Radio transmission device, system and its method for projection display device |
| CN1991564A (en) * | 2005-12-29 | 2007-07-04 | 联想(北京)有限公司 | Wireless projection method and system and apparatus thereof |
| CN101666958A (en) * | 2008-09-02 | 2010-03-10 | 鸿富锦精密工业（深圳）有限公司 | Projecting device |
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- 2013-02-27 CN CN201310061581.5A patent/CN103235705B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020060994A1 (en) * | 2000-11-17 | 2002-05-23 | Erno Kovacs | Transmission of carry-on objects using a wireless ad-hoc networking environment |
| CN1609780A (en) * | 2003-10-24 | 2005-04-27 | 微软公司 | Systems and methods for projecting content from computing devices |
| CN1987632A (en) * | 2005-12-20 | 2007-06-27 | 宏碁股份有限公司 | Radio transmission device, system and its method for projection display device |
| CN1991564A (en) * | 2005-12-29 | 2007-07-04 | 联想(北京)有限公司 | Wireless projection method and system and apparatus thereof |
| CN101666958A (en) * | 2008-09-02 | 2010-03-10 | 鸿富锦精密工业（深圳）有限公司 | Projecting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744197A (en) * | 2016-04-27 | 2016-07-06 | 苏州新雅电子有限公司 | Projection system |
| CN107147887A (en) * | 2017-05-04 | 2017-09-08 | 大连理工大学 | Wireless display method and device |
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| CN103235705B (en) | 2016-08-17 |
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