In the dissertation , the principle of image coding , the jpeg system and the real - time signal processing system based on dsp are introduced first . then the design of a jpeg real - time image decoder system based on motorola coldfire mcf5272 is discussed 本文首先介绍了图像压缩技术的原理、 jpeg标准和基于dsp的实时信号处理系统，然后在motorolacoldfire32位微处理器mcf5272上设计实现了jpeg解码算法。
In chapter 5 , we discuss where to embed the watermark based on the mpeg ' s encoding algorithm , the differences between mpeg system and static image are considered , we also discuss how to mesure the qulity of a kind of watermarking method 在第五章中，首先根据mpeg文件格式及其编解码算法的特点提出了在视频中嵌入水印的位置，比较了它和静态水印技术的异同点。给出了一种衡量mpeg视频水印技术的方法。
Finally , the optimum encoding of an unequal error protection linear code is discussed . turbo codes and their unequal error protection are studied in the fifth chapter . after performance analyzing of turbo codes , the map decoding algorithm and its simulation results are given 第五章是针对turbo码展开的，先给出了turbo码的性能分析，然后讨论了turbo码的map ( maximumapostiori )解码算法，并仿真了map算法的性能。
Vorbis coding algorithm can provide high quality audio compression with advanced perceptual coding and transform coding technologies ; and because of its completely open and non - patent , vobis has attracted more and more attentions by music industrial and audio users Vorbis编解码算法利用先进的感知编码和变换编码等技术提供高质量的音乐压缩,同时因为其完全开源和无专利版权费用的特点而逐渐受到音乐工业和用户的重视。
