基于数字信号处理的体全息视频体存储方案研究  

Holographic Storage Scheme of Video Based on Digital Signal Processing

作　　者：贾克斌[1] 敦书波[1] 杨大鹏[1] 陶世荃 吴会丛[3] 

机构地区：[1]北京工业大学北京市信号与信息处理研究室,北京100022 [2]北京工业大学应用数理学院,北京100022 [3]河北科技大学信息科学与工程学院,河北石家庄050051

出　　处：《电路与系统学报》2003年第3期32-35,45,共5页Journal of Circuits and Systems

基　　金：国家973计划资助项目(1999033001);国家自然科学基金资助项目(69977005)

摘　　要：合理有效的存储方案能在有限的硬件条件下,充分挖掘存储系统的潜力,达到用户对存储数据误码率的要求。本文从通信系统的观点出发,并充分结合体全息存储系统的特性,设计和实现了一套基于数字信号处理的体全息视频存储方案。针对体全息存贮系统中噪声干扰复杂的特点,提出了一些新的具体数字信号处理方法,包括二维渐进循环移位交织器、调制—阵列码的编译码方法及其相应的软判决度量方法等,从而形成了一套存储方案。实验结果表明,该存储方案可以有效地抑制体全息系统中的噪声干扰,对于一段包含音频和视频的多媒体数据,采用本方案进行全息存储和重构数据的回放取得了成功。A holographic storage scheme for multimedia data storage and retrieval based on the digital signal processing (DSP) is proposed. A communication model for holographic storage system is obtained on the analogy of traditional communication systems. Many characteristics of holographic storage are embodied in the communication model. Then some techniques of digital signal processing including two-dimensional (2-D) shifting interleaving, encoding and decoding of modulation-array code and method of soft-decision, etc. can be employed in the system. From the results of experiments it can be seen that the influence of noise can be effectively reduced by the proposed measures. A segment of multimedia data, including video and audio data, is retrieved successfully after holographic storage by using above mentioned techniques.

关 键 词：体全息存储 数字信号处理 调制一阵列码 软判决 交织 

分 类 号：TB877[一般工业技术—摄影技术]