基于MPEG-4的无线高清影音传输原理及系统实现
毕业论文关键词 MPEG-4、无线传输技术、 ARM Cortex-A9 MPCore、 AML8726-MX、 Android4.0
Title The princilpe and system implementation of wireless HD video transmission based on MPEG-4 Abstract In this paper, we describe the wireless HD video transmission system， MPEG-4 codec standard is a mature codec solutions with high efficiency in video / audio codec , the processor utilises the mainstream ARM Cortex-A9 MPCore application-level processor , SOC Chip is the latest AML8726-MX chip, operating system is Android4 .0 system that uses the LINUX kernel, which has obvious advantages to other operating systems. Firstly, we describes the current development of wireless HD video transmission system, and then the MPEG-4 codec program is described in detail.At the same time, the wireless transmission technology also briefly introduced. This paper presents a wireless video transmission models, including the choice of hardware and the environment to build of operating system.Explaining the adventage of the Cortex-A9 processor and a chip. System model is based on RTP / UDP / IP protocol, the protocol suitable for real-time requirements of the transmission system.
Keywords MPEG-4、Wireless transmission technology、ARM Cortex-A9 MPCore、AML8726-MX、Android4.0
1 绪论 .... 1
1.1 选题目的及意义 .... 1
1.2 选题背景 1
1.3 本文组织架构 . 2
2 MPEG-4编解码 . 2
2.1 MPEG-4标准 .. 2
2.2 MPEG-4编码方案 ... 3
2.3 MPEG-4编码的仿真 . 8
2.4 MPEG-4解码方案 .. 10
3 无线传输技术 11
3.1 WIFI 技术 ... 11
3.2 超宽带UWB 技术 ... 13
3.3 ZigBee 技术 . 13
3.4 WiMax 技术 .. 14
4 影音传输系统的硬件方案 15
4.1 ARM Cortex-A9处理器 .. 15
4.2 Amlogic AML8726-MX芯片 .... 17
5 影音传输系统的软件方案 20
5.1 基于RTP/UDP/IP 的影音传输模型[4] . 20
5.2 安卓操作系统架构 . 21
5.3 开发环境的配置和搭建 .. 22
结 论 .... 30
致 谢 .... 31
参考文献 .. 32
1 绪论 1.1 选题目的及意义 建立一套完整的基于MPEG-4标准的无线高清影音传输系统的模型，能够流畅传输1080P 的高清视频流是该选题的目的。无线高清影音传输利用现在发达的无线传输技术改变了传统的有线传输模式，使得影音传输变得更加简单方便，将会更多的被用在教育、商业、个人和家庭娱乐领域。