CN103235705B - Multi-user radio projecting method and projection gateway - Google Patents
Multi-user radio projecting method and projection gateway Download PDFInfo
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- CN103235705B CN103235705B CN201310061581.5A CN201310061581A CN103235705B CN 103235705 B CN103235705 B CN 103235705B CN 201310061581 A CN201310061581 A CN 201310061581A CN 103235705 B CN103235705 B CN 103235705B
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Abstract
The invention discloses a kind of multi-user radio projecting method and projection gateway, software is managed including user side wireless display, Wireless Presentation Gateway, described user side multimedia equipment can be PC or the Android mobile device possessing wireless network card, WIFI radio communication is carried out with Wireless Presentation Gateway by wireless display management software controls user end, Wireless Presentation Gateway is connected on existing wired projector to realize wireless display by USB interface, user is made to be only used in the wireless display that just can realize multiple user on existing wired projector, without again buying Wireless projector.
Description
Technical field
The present invention relates to the auxiliary equipment field of a kind of projector, more particularly, to a kind of multi-user radio projecting method and projection gateway.
Background technology
Along with society and the most progressive, the wireless display technology development the most therewith of science and technology, Wireless projector receives the concern of more and more user, Wireless projector has, in key industrys such as education, commercial affairs, government, the prospect that is extremely widely applied, but possess the projector of radio function based on wireless local area network technology due to existing, it is usually high-end product, expensive, therefore Wireless projector cannot be popularized always.And most of user has had wired projector, if it is desired to use wireless display function, then must again buy Wireless projector, add use cost, cause waste simultaneously.
Android system is increased income, freely due to it, and application on the mobile apparatus is more and more extensive.Wireless Presentation Gateway not only supports that traditional PC realizes wireless display, also supports the wireless display of Android mobile device.Therefore using Android mobile device as user side, only shirtsleeve operation need to be passed through, it is possible to realize wireless display, share greatly facilitate user with the information in mobile device (such as mobile phone, PAD etc.).
Summary of the invention
It is an object of the present invention to provide one 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 the following technical scheme that
A kind of multi-user radio projecting method, user side multimedia equipment carries out radio communication by user side wireless display management software with Wireless Presentation Gateway, and Wireless Presentation Gateway is connected to projector by USB interface.
Preferably, described Wireless Presentation Gateway includes button, communication module, processor, SD interface, USB interface, LCD interface, VGA module, power supply dress die change block and 220V power interface；
The outfan of described button, communication module, SD interface and USB interface is connected with processor input respectively, the outfan of processor is connected with the input of LCD interface, the outfan of LCD interface is connected with VGA module, and the power transfer module being connected with 220V power interface is that modules is powered.
Preferably, described communication module is WIFI module；Processor is ARM Cortex A8 flush bonding processor；VGA module is that core is constituted by FPGA and SDRAM；Described SD card embedded in android system.
Preferably, described user side multimedia equipment is to possess the PC of wireless network card or have the mobile device of android system.
Preferably, described user side multimedia equipment uses WIFI with the communication of Wireless Presentation Gateway.
User side multimedia equipment is constantly obtained video memory data by wireless display management software and is sent to Wireless Presentation Gateway by WIFI on backstage；The photographic head shooting picture of user side Android mobile device can realize wireless display function；User side Android mobile device can be with the broadcasting of controlled in wireless projected picture；Projected picture can be made up of the projected picture of multiple users, and the picture of certain user can be selected to amplify.
The present invention also proposes a kind of for realizing the multi-user radio projection gateway of wired projection transform to wireless display, including button, communication module, processor, SD interface, USB interface, LCD interface, VGA module, power supply dress die change block and 220V power interface；
The outfan of described button, communication module, SD interface and USB interface is connected with processor input respectively, the outfan of processor is connected with the input of LCD interface, the outfan of LCD interface is connected with VGA module, and the power transfer module being connected with 220V power interface is that modules is powered.
Preferably, described communication module is WIFI module；Processor is ARM Cortex A8 flush bonding processor；VGA module is that core is constituted by FPGA and SDRAM；Described SD card embedded in android system.
Compared with prior art, the invention have the benefit that and only Wireless Presentation Gateway need to be connected with existing wired projector by USB interface, the wireless display management software that user side runs in PC or Android mobile device just can realize wireless display, Android mobile device can also realize the wireless projection of photographic head shooting picture and projected picture is realized controlled in wireless simultaneously, facilitate the communication for information between user, also save cost simultaneously.
Accompanying drawing explanation
Fig. 1 is the theory diagram of Wireless Presentation Gateway.
Fig. 2 is wireless projection system integrated connection schematic diagram.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, 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 WIFI radio communication by user side wireless display management software with Wireless Presentation Gateway 12, and Wireless Presentation Gateway 12 is connected to can realize on existing wired projector 11 wireless display of multiple user by USB interface.Wherein user side multimedia equipment 10 can be PC or the Android mobile device possessing wireless network card
As it is shown in figure 1, described a kind of multi-user radio projection gateway, including 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 block 8,220V power interface 9；
Described button 1, WIFI module 2, SD interface 4 and USB interface 5, outfan be connected with ARM Cortex A8 flush bonding processor 3 input respectively, ARM Cortex A8 flush bonding processor 3 outfan is connected with the input of LCD interface 6, the outfan of LCD interface 6 is connected with VGA module 7, VGA module 7 is that core is constituted by FPGA and SDRAM, USB interface 4 can be with external USB flash disk memorizer, SD interface 4 inserts SD card, and embedded in android system in SD card, the power supply dress die change block 8 being connected with 220V power interface 9 is a module for power supply.
After USB flash disk memorizer accesses USB interface 5, ARM Cortex A8 flush bonding processor 3 can identify the file type in USB flash disk memorizer automatically, and the data after then processing deliver to projector out by USB interface.
User side PC equipment needs to install wireless display management software, and this software utilizes the api function of operating system to obtain the data of the current picture in video memory, and is sent to Wireless Presentation Gateway by WIFI.
Android mobile device needs to install wireless display management software, this software design approach is: first build Bitmap, obtain the height-width of screen, carry out screen printing image again, then by the data of ByteArrayOutputStream capture core buffer, screen image data byte stream is converted to byte(byte by toByteArray ()) array, then enable thread data are sent by socket.
After Android handheld equipment or PC are connected with Wireless Presentation Gateway foundation by ICP/IP protocol, Wireless Presentation Gateway starts a thread and accepts view data, can obtain, by readjustment preview function setPreviewCallback (streamIt) (wherein streamIt is the object of the interface adjusted back), the real time data that handheld mobile device sends.The data received, after ARM Cortex A8 embedded processing, send scialyscope to show by integrated USB interface, are updated the picture of display on scialyscope by handler simultaneously.
The photographic head data of described Android mobile device realize wireless display.Android handheld equipment needs to install wireless display management software, this software design approach is: define a surfaceView to define the camera-type of mobile device, in Activity, the camera.open opening camera by realizing interpolation in the OnSurfaceCreate () that surfaceHodler.callBack interface rewrites can obtain a Camera object.The preview subject of Camera is set. mCamera.setPreviewDisplay(holder);Holder is the holder of we surfaceView.SurfaceView.getHodler(can be passed through) obtain.Thus can show the picture of the preview of mobile device in surfaceView.
After Android mobile device is connected with Wireless Presentation Gateway foundation by WIFI, by readjustment mobile phone preview function: mCamera.setPreviewCallback (streamIt);
The object of the interface of // streamIt readjustment.Thus can obtain the real-time data of camera preview.Obtain is the data of ecosystem yuv format.
Call image.compressToJpeg() yuv format view data data is transferred to jpg form:
YuvImage
image = new YuvImage(data, ImageFormat.NV21,size.width, size.height, null);
Finally projector is sent to show by USB interface view data.
The embodiment of invention described above, is not intended that limiting the scope of the present invention.Any amendment, equivalent and improvement etc. done within the spiritual principles of the present invention, within should be included in the claims of the present invention.
Claims (5)
1. a multi-user radio projecting method, it is characterised in that user side multimedia equipment carries out radio communication by user side wireless display management software with Wireless Presentation Gateway, and Wireless Presentation Gateway is connected to projector by USB interface；
When user side multimedia equipment is Android mobile device, need wireless display management software is installed, this software design approach is: first build Bitmap, obtain the height-width of screen, carry out screen printing image again, then by the data of ByteArrayOutputStream capture core buffer, screen image data byte stream is converted to byte array by toByteArray (), then enables thread and data sent by socket；
User side multimedia equipment is Android mobile device or PC, be set up by ICP/IP protocol and Wireless Presentation Gateway and be connected after, Wireless Presentation Gateway starts a thread and accepts view data, the real time data that Android mobile device sends is obtained by readjustment preview function setPreviewCallback (streamIt), wherein streamIt is the object of the interface adjusted back, the data received are after treatment, send scialyscope to show by integrated USB interface, updated the picture of display on scialyscope simultaneously by handler；
Described Android mobile device needs to install wireless display management software, this software design approach is: define a surfaceView to define the camera-type of Android mobile device, in Activity, the camera.open opening camera by realizing interpolation in the OnSurfaceCreate () that surfaceHodler.callBack interface rewrites can obtain a Camera object, the preview subject of Camera, mCamera.setPreviewDisplay (holder) are set；Holder is the holder of surfaceView；Pass through surfaceView.getHodler() obtain；Thus can show the picture of the preview of Android mobile device in surfaceView；
After Android mobile device is connected with Wireless Presentation Gateway foundation by WIFI, by readjustment Android mobile device preview function: mCamera.setPreviewCallback (streamIt);The object of the interface of streamIt readjustment；
Thus obtaining the real-time data of camera preview, acquisition is the data of ecosystem yuv format；
Call image.compressToJpeg() yuv format view data data is transferred to jpg form:
Finally projector is sent to show by USB interface view data.
Multi-user radio projecting method the most according to claim 1, it is characterised in that described Wireless Presentation Gateway includes button, communication module, processor, SD interface, USB interface, LCD interface, VGA module, power supply dress die change block and 220V power interface；
The outfan of described button, communication module, SD interface and USB interface is connected with processor input respectively, the outfan of processor is connected with the input of LCD interface, the outfan of LCD interface is connected with VGA module, and the power transfer module being connected with 220V power interface is that modules is powered.
Multi-user radio projecting method the most according to claim 2, it is characterised in that described communication module is WIFI module；Processor is ARM Cortex A8 flush bonding processor；VGA module is that core is constituted by FPGA and SDRAM.
Multi-user radio projecting method the most according to claim 1, it is characterised in that described user side multimedia equipment is to possess the PC of wireless network card or have the mobile device of android system.
Multi-user radio projecting method the most according to claim 1, it is characterised in that described user side multimedia equipment uses WIFI with the communication of Wireless Presentation 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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| CN105744197A (en) * | 2016-04-27 | 2016-07-06 | 苏州新雅电子有限公司 | Projection system |
| CN107147887B (en) * | 2017-05-04 | 2018-08-21 | 大连理工大学 | Wireless display method and device |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE60039890D1 (en) * | 2000-11-17 | 2008-09-25 | Sony Deutschland Gmbh | Information transmission via an ad hoc network |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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