Embedded type wireless projection access device

A technology of wireless projection and access equipment, applied in the direction of digital output to display equipment, using projection device image reproducer, TV, etc., can solve the problems of update support, lack of versatility, inconvenient use, etc., and achieve stable and reliable operation Effect

Inactive Publication Date: 2012-11-28
SHANDONG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The projection equipment needs to be equipped with a special data communication line to connect with the fixed computer in the classroom, which is inconvenient to install;
[0004] 2. If other computers need to be connected to it, you need to unplug the VGA cable to connect to the newly connected computer, which is inconvenient to use;
[0005] 3. The use of smart mobile devices such as pads is becoming more and more common, and its flexible and convenient use makes it gradually widely

Method used

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  • Embedded type wireless projection access device
  • Embedded type wireless projection access device
  • Embedded type wireless projection access device

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Embodiment Construction

[0049] The present invention realizes the embedded wireless projection function based on the OMAP3530 processor, and the design idea is the idea of ​​wireless screen transmission which is very popular recently, so as to provide a general processing means for screen projection.

[0050] The so-called screen transmission, referred to as screen transmission, is to transfer the data displayed on the screen of one device to the screen of another device for display. This is a technology in which computing devices with small screens borrow the display capabilities of display devices with large screens to share information and tap the potential of devices. It is a technology adopted by Intel's WiDi, China Mobile's WiMo and Hisense's Wireless Project widely adopted technology. The information transmission methods are all wireless local area network transmissions using WiFi, and no special wireless transmission technology is required.

[0051] Any image, text, and video data displayed ...

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Abstract

The invention discloses an implementation method of an embedded type wireless projection access device based on OMAP (object module assembly program)3530 and provides a rational wireless expansion solution based on a screen transmission idea to solve the use inconvenience of the existing wired projector. The device adopts the OMAP 3530 of TI as a core, wherein a dual-core framework combining ARM and DSP (digital signal processor) meets the application requirement of user interaction and data processing. The implementation method provided by the invention employs different programming methods and ideas comprehesively, the whole application program is divided into four modules at an ARM end and a video decryption server end mould at a DSP end, thereby providing a guarantee for real time processing of streaming media data, wherein the four modules at the ARM end include a network reception module, a code stream conversion module, a video decryption client end module and a video rendering module.

Description

technical field [0001] The invention relates to an embedded wireless projection access device, which belongs to the technical field of embedded streaming media. Background technique [0002] A projector is a multimedia device that can visually display teaching content and enterprise products in the form of pictures and videos, and has been widely used in the fields of education and business. Especially in colleges and universities, projectors and their supporting multimedia teaching equipment are installed in almost every classroom. However, traditional wired projectors have the following disadvantages: [0003] 1. The projection equipment needs to be equipped with a special data communication line to connect with the fixed computer in the classroom, which is inconvenient to install; [0004] 2. If other computers need to be connected to it, you need to unplug the VGA cable to connect to the newly connected computer, which is inconvenient to use; [0005] 3. Smart mobile ...

Claims

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Application Information

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IPC IPC(8): H04N5/74H04N9/31G06F3/14
Inventor 刘琚李清石殷超刘朝晨许宏吉元辉
Owner SHANDONG UNIV
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