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  本文關(guān)鍵詞：LED顯示屏通用脫機播放器系統(tǒng)設(shè)計　出處：《中國科學(xué)院研究生院（長春光學(xué)精密機械與物理研究所）》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： LED顯示屏 嵌入式Linux DM3730 異步顯示

【摘要】：LED顯示屏稱電子顯示屏,由LED發(fā)光二極管點陣和LED驅(qū)動面板組成。全彩LED顯示屏可以清晰的顯示圖文、動畫、視頻和圖表等各種信息,還可顯示電視、錄像、和現(xiàn)場實況。LED顯示屏具有其它傳統(tǒng)顯示器件無法比擬的優(yōu)點：亮度高、功耗低、性能穩(wěn)定、面積可隨意擴展。目前廣泛應(yīng)用于交通運輸、媒體廣告,公共場所等眾多領(lǐng)域。 本文結(jié)合LED顯示屏的需求和異步播放方式的特點,設(shè)計了一款高性能嵌入式平臺,實現(xiàn)了全彩LED顯示屏異步播放控制。系統(tǒng)硬件結(jié)構(gòu)以DM3730微處理器為核心,外圍擴展網(wǎng)絡(luò)通訊、串口通訊、SD大容量存儲卡接口、USB接口等外部模塊。構(gòu)建了以linux為核心的嵌入式操作系統(tǒng)環(huán)境,并基于linux開發(fā)了功能強大,性能穩(wěn)定、滿足多領(lǐng)域需求的全彩LED顯示屏通用脫機播放器軟件。 本文的主要內(nèi)容包括以下方面： 1.,分析用戶需求,設(shè)計異步播放系統(tǒng)的整體模型,劃分硬件系統(tǒng)和軟件系統(tǒng)功能模塊。 2.基于DM3730平臺構(gòu)建系統(tǒng)層軟件,包括BootLoader移植,Linux2.6.32版本內(nèi)核移植,根文件系統(tǒng)構(gòu)建,設(shè)備驅(qū)動移植。 3.LED通用脫機播放器控制軟件開發(fā)。設(shè)計出一種支持節(jié)目調(diào)度,播放控制,多區(qū)域顯示和多種媒體類型的播放器控制軟件。 4.基于3D硬件加速的顯示系統(tǒng)設(shè)計。利用DM3730的3D圖形加速功能來提升系統(tǒng)的顯示性能,充分發(fā)揮硬件能力。
[Abstract]:LED display screen is called electronic display, which is composed of LED LED lattice and LED driver panel. Full-color LED display can clearly display all kinds of information, such as picture, text, animation, video and chart. Also can display TV, video, and live field. Led display screen has the advantages that other traditional display devices can not be compared: high brightness, low power consumption, stable performance. The area can be expanded at will. At present, it is widely used in transportation, media advertising, public places and many other fields. According to the demand of LED display screen and the characteristics of asynchronous playback mode, a high-performance embedded platform is designed in this paper. Asynchronous playback control of full-color LED display is realized. The hardware structure of the system is based on DM3730 microprocessor, peripheral extended network communication, serial port communication and SD large-capacity memory card interface. USB interface and other external modules. The embedded operating system environment with linux as the core is built, and based on linux, the embedded operating system is developed with powerful function and stable performance. Universal offline player software for full color LED display screen. The main contents of this paper include the following: 1. Analyze the user's demand, design the whole model of the asynchronous playing system, divide the hardware system and the software system function module. 2. Build system-tier software based on DM3730 platform, including BootLoader porting Linux version 2.6.32 kernel porting, root file system building, device driver porting. 3. Development of LED general offline player control software. A player control software supporting program scheduling, playback control, multi-area display and multi-media type is designed. 4. Design of display system based on 3D hardware acceleration. Using 3D graphics acceleration function of DM3730 to improve the display performance of the system and give full play to the hardware capability.
【學(xué)位授予單位】：中國科學(xué)院研究生院（長春光學(xué)精密機械與物理研究所）
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TN873

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本文編號：1433680