三值光学处理器的MSD数据正/负值判断器设计与实现  

Design and Implementation of Positive and Negative Discriminator of MSD Data for Ternary Optical Processor

作　　者：张宏烈[1] 周健[1] 张素兰[2] 刘艳菊[1] 王先超[3] Zhang Honglie;Zhou Jian;Zhang Sulan;Liu Yanju;Wang Xianchao(College of Computer and Control Engineering,Qiqihar University,Qiqihar,Heilongjiang 161006;School of Computer Engineering and Science,Shanghai University,Shanghai 200072;School of Mathematics and Statistics,Fuyang Teachers College,Fuyang,Anhui 236041)

机构地区：[1]齐齐哈尔大学计算机与控制工程学院,黑龙江齐齐哈尔161006 [2]上海大学计算机工程与科学学院,上海200072 [3]阜阳师范学院数学与统计学院,安徽阜阳236041

出　　处：《计算机研究与发展》2017年第6期1391-1404,共14页Journal of Computer Research and Development

基　　金：国家自然科学基金项目(61672006);黑龙江省自然科学基金项目(F201440)~~

摘　　要：数值正/负或零判断器是计算机比较数据大小的必备器件,随着三值光学处理器中采用三态光信号表示信息的MSD(modified signed-digit)数并行加法器的出现,研究三态光信号所表达数值的正/负或零值判断器成为完善三值光学处理器的重要一环.根据MSD数的特点,通过对三态光信号的变化规律与MSD数据的对应关系的研究,提出了从一组三态光信号来判断其表达的多位MSD数据正/负特性或零值的方法.将这一方法用于2个不定长MSD数据的差运算结果,实现了判别2个MSD数据的大小或相等.依据上述理论,建立了以偏振片、液晶和半反半透镜为主要器件构造的MSD数据判断器结构,加以FPGA作为控制电路,实现了光电混合模式的3位MSD数据判断器.通过实验证明了该判断器的有效性,进而证明了其基本理论的正确性和结构设计的可行性.The numerical positive/negative or zero value discriminator is a key component to comparethe data size in computer.With the advent of the MSD(modified signed-digit)parallel adder which using three state optical signal to express number in the ternary optical processor,the research ofpositive/negative or zero value discriminator of MSD digit is becoming an important test to perfectternary optical processor.Based o n the characteristics of MSD data and the correspondence of theoptical signal and the M S D digit,this paper proposes a method to ascertain the positive/negative orzero value of the multi-bit MSD data via direct analysis of agroup of tree state optical signals whichexpressing the MSD data.B y applying this method to the subtraction result of MSD data,it is realizedto discriminate the size of two MSD data.According to the ab ove theory,in this paper a structure ofMSD data discriminator is established,which is made of polarizer,liquid crystal and half-mirror.Inaddition to F PGA as the control circuit,a3-bit M S D data discriminator is realized.The validity of thediscriminator is proved by some experiment,and the correctness of the basic theory and the feasibilityof the structural design are proved too.

关 键 词：三值光学处理器 MSD数据正/负值判断方法 判断器结构设计 判断器硬件设计 

分 类 号：TP38[自动化与计算机技术—计算机系统结构]