CN102905100A - WLAN-based wireless projection system - Google Patents
WLAN-based wireless projection system Download PDFInfo
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- CN102905100A CN102905100A CN2012103697653A CN201210369765A CN102905100A CN 102905100 A CN102905100 A CN 102905100A CN 2012103697653 A CN2012103697653 A CN 2012103697653A CN 201210369765 A CN201210369765 A CN 201210369765A CN 102905100 A CN102905100 A CN 102905100A
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- processing chip
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- output interface
- process chip
- video output
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Abstract
The invention discloses a WLAN (Wirele Local Area Network)-based wireless projection system. The system comprises an ARM processing chip, a wireless receiving unit, a graphic image processing chip, a video output interface, a storage unit and a clock generator, wherein the wireless receiving unit is based on a WLAN, and is used for receiving the a video signal of a media terminal and inputting the video signal into the ARM processing chip; the graphic image processing chip is connected with the ARM processing chip, and is used for encoding and decoding the received video signal and outputting the processed signal to the video output interface; the video output interface is connected with a projection device; the storage unit is used for storing the video signal, and providing a drive program and a running algorithm program for the ARM processing chip and the graphic image processing chip; and the clock generator is used for providing a clock signal. The system provided by the invention has the advantage of simultaneously being suitable for being used for various media terminals to perform wireless projection.
Description
Technical field
The present invention relates to the wireless projection system of projecting apparatus, specifically refer to a kind of wireless projection system based on the WLAN net.
Background technology
The invention of projecting apparatus has brought many convenience for undoubtedly modern people's work, life, and it is widely used in industries such as education, commercial government departments.Yet along with the development of science and technology and the expansion in projector applications field, people often can run into a worry---the cable that projecting apparatus is loaded down with trivial details when using projecting apparatus.So, in recent years people's wireless connections of projecting apparatus that begin one's study, it can save loaded down with trivial details wiring, reduce the requirement to projecting apparatus user position, makes the application of projecting apparatus convenient and quick.
Yet at present, the wireless display technology exists bandwidth not enough, and without safety precautions, to the wireless display of smart mobile phone also without defectives such as effective technology supports.
Summary of the invention
The objective of the invention is the shortcoming and defect that exists in order to overcome prior art, and a kind of wireless projection system based on the WLAN net that carries out wireless display applicable to each media termination is provided.
For achieving the above object, technical scheme of the present invention is to include with lower unit
The ARM process chip; Radio receiving unit, based on wlan network, the vision signal of wireless mode receiving media terminal, and vision signal is input to the ARM process chip; Media termination includes smart mobile phone, panel computer and computer etc.
The graph and image processing chip is connected to the ARM process chip, is used for receiving that vision signal carries out encoding and decoding, and outputs to video output interface; Video output interface is used for connecting projector equipment, and this video output interface includes HDMI interface, DVI interface, VGA interface and color difference components interface; Memory cell, being used for stored video signal, ARM process chip and graph and image processing chip provides driver and executing arithmetic program; Infrared remote receiver is connected on the ARM process chip, is used for infrared remote control control; Clock generator is used for providing clock signal.
Further arranging is that described memory cell includes ROM and RAM.
Below in conjunction with specification drawings and specific embodiments the present invention is done further introduction.
Description of drawings
Fig. 1 principle of the invention block diagram;
Fig. 2 projecting apparatus Software for Design interface block diagram;
Fig. 3 computer software design interface block diagram;
Fig. 4 smart mobile phone Software for Design interface block diagram.
Embodiment
Below by embodiment the present invention is carried out concrete description; only be used for the present invention is further specified; can not be interpreted as the restriction to protection range of the present invention, the technician in this field can make some nonessential improvement and adjustment to the present invention according to the content of foregoing invention.
The specific embodiment of the present invention as shown in Figure 1 includes with lower unit:
The ARM process chip; Radio receiving unit, based on wlan network, the vision signal of wireless receiving media termination, and vision signal is input to the ARM process chip; Media termination includes smart mobile phone, panel computer and computer etc.
The graph and image processing chip is connected to the ARM process chip, is used for receiving that vision signal carries out encoding and decoding, and outputs to video output interface; Video output interface is used for connecting projector equipment; This video output interface of present embodiment is the VGA interface; Memory cell, being used for stored video signal, ARM process chip and graph and image processing chip provides driver and executing arithmetic program; This memory cell of present embodiment is ROM and RAM combination.
Clock generator is used for providing clock signal.
Software plan design of the present invention: software systems are wanted and can be carried out efficient coding to the display of computer output, can on wireless network, transmitting efficiently, wherein can adopt at present popular H.264 code decode algorithm to video, to reach desirable compression ratio.And software can dynamically arrange the active conference pattern, have one to one, and one-to-many, the many-one isotype is optional.For the software of smart mobile phone, because of the at present restriction of hardware condition, and do not require its effectively transmission video signal.
Software for Design divides three parts: Software for Design in the projecting apparatus, computer software design, smart mobile phone Software for Design.
Projecting apparatus Software for Design interface block diagram wherein, as shown in Figure 2, computer software design interface block diagram, as shown in Figure 3, smart mobile phone Software for Design interface box, as shown in Figure 4.
Claims (2)
1. wireless projection system based on WLAN net is characterized in that including with lower unit:
The ARM process chip;
Radio receiving unit, based on wlan network, the vision signal of wireless mode receiving media terminal, and vision signal is input to the ARM process chip;
The graph and image processing chip is connected to the ARM process chip, is used for receiving that vision signal carries out encoding and decoding, and outputs to video output interface;
Video output interface is used for connecting projector equipment, and this video output interface includes HDMI interface, DVI interface, VGA interface and color difference components interface;
Memory cell, being used for stored video signal, ARM process chip and graph and image processing chip provides driver and executing arithmetic program;
Infrared remote receiver is connected on the ARM process chip, is used for infrared remote control control;
Clock generator is used for providing clock signal.
2. a kind of wireless projection system based on WLAN net according to claim 1, it is characterized in that: described memory cell includes ROM and RAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103697653A CN102905100A (en) | 2012-09-27 | 2012-09-27 | WLAN-based wireless projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103697653A CN102905100A (en) | 2012-09-27 | 2012-09-27 | WLAN-based wireless projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102905100A true CN102905100A (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103697653A Pending CN102905100A (en) | 2012-09-27 | 2012-09-27 | WLAN-based wireless projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102905100A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398596A (en) * | 2007-09-25 | 2009-04-01 | 海尔集团公司 | Projector |
| CN201859429U (en) * | 2010-10-22 | 2011-06-08 | 南开大学 | Projector control system for simultaneously displaying multi-computer desktops |
-
2012
- 2012-09-27 CN CN2012103697653A patent/CN102905100A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398596A (en) * | 2007-09-25 | 2009-04-01 | 海尔集团公司 | Projector |
| CN201859429U (en) * | 2010-10-22 | 2011-06-08 | 南开大学 | Projector control system for simultaneously displaying multi-computer desktops |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130130 |