三值光学计算机SD11解码器的实现及改进  

Implementation and improvement of SD11 decoder

作　　者：王志恒[1] 金翊[1] 欧阳山[1] 

机构地区：[1]上海大学计算机工程与科学学院,上海200444

出　　处：《上海大学学报（自然科学版）》2015年第2期245-256,共12页Journal of Shanghai University:Natural Science Edition

基　　金：国家自然科学基金资助项目(61073049);国家自然科学青年基金资助项目(61103054);上海市教委科研创新基金资助项目(13ZZ074;13YZ005);上海市自然科学基金资助项目(13ZR1416000);上海高校青年教师培养计划资助项目(ZZSD13035)

摘　　要：介绍了一款用于三值光学计算机应用研究系统SD11的三值光学解码器的设计及实现.该解码器的硬件包含4个摄像头、1个嵌入式系统和1个专门设计的摄像头和嵌入式系统的转接板.通过该转接板,实现了在软件操控下用1个嵌入式系统分时控制4个摄像头完成拍照的技术.该解码器包含了已有的数据存储技术、阈值判断技术和三值数据生成技术.对这些技术进行了必要的整合,进而形成了实际可用的解码器核心软件.该软件与获取光学处理器输出画面的过程无关,因此可作为未来商业化三值光学计算机解码技术的重要基础.通过实验研究了三值光学解码器的功能及其对环境变化的适应性,并很好地解决了当信号线长度超过1.2 m时图像质量下降的问题,使该解码器达到了在SD11中使用的要求,为促进三值光学计算机进入应用领域提供了条件.This paper describes the decoder of a ternary optical computer＇s applied research systems, SD11. Hardware of the decoder includes four cameras, an embedded system, and an adapter plate connecting the cameras with the embedded system. With this adapter plate, works of the four cameras is time-shared controlled by a program in the embedded system. Some modules such as data storage, threshold decision and three values data generation used in the decoder are contributed by the existing research. Having integrated these into the system, an available core program of the decoder is formed. Since the software is independent of the particular process of picture taking, the core part of the program may be used in the future commercial ternary optical computer. The contribution of this work is to study the ternary optical decoder＇s functionality and adaptability to environmental change via a series of test. Through the experiments, the problem of image quality degradation is solved when the signal carrying wire is longer than 1.2 m. This makes the decoder meet the requirements for the SD11＇s practical uses, and promotes the development of ternary optical computer.

关 键 词：三值光学解码器 光学计算机 摄像头 嵌入式系统 

分 类 号：TP305[自动化与计算机技术—计算机系统结构]