基于嵌入式Linux的多媒体终端设计
发布时间：2018-09-14 11:20
【摘要】：移动互联网的飞速发展改变了人们的生活方式使得人类进跨入一个全新的信息时代。作为这个时代的主题，图片、文字、音频、视频、数据等多媒体通信相结合，极大丰富了人们的生活体验。嵌入式多媒体终端设备作为直接于用户交互的载体，是多媒体系统中的重要组成部分，其处理能力强、体积小、使用方便，近些年来已经成为多媒体领域的研究的主流。多媒体终端是一种能综合各种不同媒体可以集影音、娱乐、通话、办公和计算等应用一体的新型通信终端。从系统的角度出发，多媒体终端产品的开发主要涉及媒体处理技术、存储技术、通信技术和显示技术。 在分析了现在市面上主流的多媒体数字终端设备和嵌入式技术的基础上，设计出了一种嵌入式多媒体终端，提出了多媒体终端设备的具体软、硬件体系结构。选择以ARM9为核心的三星S3C2440A微处理器作为系统的主控芯片。在主控芯片的基础上，分析当前嵌入式多媒体终端设备的主要功能需求，设计了系统硬件的总体架构，进行了外围芯片的选型，设计了系统终端整体硬件的解决方案，对S3C2440A处理器的芯片引脚资源进行了具体的分配，详细设计了主控芯片最小系统电路以及外围的存储器、液晶显示模块、触摸屏模块、SDRAM芯片、音频解码芯片和网卡芯片的连接的电路。 在所搭建硬件平台的基础上进行了嵌入式Linux操作系统的移植，，阐述了将嵌入式Linux系统移植到本系统的具体方法，分析了混合文件系统的构建，并给出了BootLoader移植、Linux内核移植和文件系统移植具体的实现方法。 在所移植的嵌入式Linux操作系统的基础上进行外围芯片驱动的开发，阐述了嵌入式Linux驱动开发的一般流程方法。具体给出了存储器NAND Flash、LCD、触摸屏模块、SDRAM、音频芯片和网卡芯片等外围芯片驱动的开发设计。
[Abstract]:The rapid development of mobile Internet has changed people's way of life. As the theme of this era, pictures, text, audio, video, data and other multimedia communication, greatly enriched people's life experience. As the carrier of user interaction, embedded multimedia terminal equipment is an important part of multimedia system. It has strong processing ability, small size and easy to use. In recent years, it has become the mainstream of multimedia research. Multimedia terminal is a new kind of communication terminal which can integrate various media, such as audio, video, entertainment, communication, office and computing. From the system point of view, multimedia terminal product development mainly involves media processing technology, storage technology, communication technology and display technology. Based on the analysis of the mainstream multimedia digital terminal equipment and embedded technology in the market, an embedded multimedia terminal is designed, and the hardware and software architecture of the multimedia terminal equipment is presented. The Samsung S3C2440A microprocessor with ARM9 as the core is chosen as the main control chip of the system. On the basis of the master control chip, the main functional requirements of the embedded multimedia terminal equipment are analyzed, the overall architecture of the system hardware is designed, the selection of the peripheral chip is carried out, and the solution of the whole hardware of the system terminal is designed. The chip pin resources of S3C2440A processor are allocated, and the minimum system circuit of main control chip and peripheral memory, liquid crystal display module and touch screen module are designed in detail. Audio decoder chip and network card chip connection circuit. On the basis of the hardware platform, the embedded Linux operating system is transplanted, the method of transplanting the embedded Linux system to this system is expounded, and the construction of the mixed file system is analyzed. The implementation methods of porting BootLoader kernel and file system are also given. Based on the transplanted embedded Linux operating system, the peripheral chip driver is developed, and the general flow chart of embedded Linux driver development is described. The development and design of peripheral chips such as memory NAND Flash,LCD, touch screen module SDRAM, audio chip and network card chip are presented.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.1
本文编号：2242557
[Abstract]:The rapid development of mobile Internet has changed people's way of life. As the theme of this era, pictures, text, audio, video, data and other multimedia communication, greatly enriched people's life experience. As the carrier of user interaction, embedded multimedia terminal equipment is an important part of multimedia system. It has strong processing ability, small size and easy to use. In recent years, it has become the mainstream of multimedia research. Multimedia terminal is a new kind of communication terminal which can integrate various media, such as audio, video, entertainment, communication, office and computing. From the system point of view, multimedia terminal product development mainly involves media processing technology, storage technology, communication technology and display technology. Based on the analysis of the mainstream multimedia digital terminal equipment and embedded technology in the market, an embedded multimedia terminal is designed, and the hardware and software architecture of the multimedia terminal equipment is presented. The Samsung S3C2440A microprocessor with ARM9 as the core is chosen as the main control chip of the system. On the basis of the master control chip, the main functional requirements of the embedded multimedia terminal equipment are analyzed, the overall architecture of the system hardware is designed, the selection of the peripheral chip is carried out, and the solution of the whole hardware of the system terminal is designed. The chip pin resources of S3C2440A processor are allocated, and the minimum system circuit of main control chip and peripheral memory, liquid crystal display module and touch screen module are designed in detail. Audio decoder chip and network card chip connection circuit. On the basis of the hardware platform, the embedded Linux operating system is transplanted, the method of transplanting the embedded Linux system to this system is expounded, and the construction of the mixed file system is analyzed. The implementation methods of porting BootLoader kernel and file system are also given. Based on the transplanted embedded Linux operating system, the peripheral chip driver is developed, and the general flow chart of embedded Linux driver development is described. The development and design of peripheral chips such as memory NAND Flash,LCD, touch screen module SDRAM, audio chip and network card chip are presented.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.1
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