新型半静态低功耗D触发器设计

本文从简化触发器内部锁存器结构以降低功耗的要求出发，提出了一种新型的半静态D触发器设计。PSPICE模拟表明，新设计逻辑功能正确。与以往一些设计相比，新设计在功耗和速度上获得显著改进。     

Low power DCVSL circuits employing AC power supply

In view of changing the type of energy conversion in CMOS circuits, this paper investigates low power CMOS circuit design, which adopts a gradually changing power clock. First, we discuss the algebraic expressions and the corresponding properties of clocked power signals. Then the design procedure is summed up for converting complementary CMOS logic gates employing DC power to the power-clocked CMOS gates employing AC power. On this basis, the design of differential cas-code voltage switch logic (DCVSL) circuits employing AC power clocks is proposed. The PSPICE simulations using a sinusoidal power-clock demonstrate that the designed power-clocked DCVSL circuit has a correct logic function and low power characteristics. Finally, an interface circuit to convert clocked signals into the standard logic levels of a CMOS circuit is proposed, and its validity is verified by computer simulations.     

Switching circuits based on comparison operations and multiple-β transistor

By using comparison operations, three basic operations, AND, OR and NOT, in Boolean algebra are re-defined Based on the characteristic that the voltage signals are easy to implement comparison operation, various logic functions realized by connecting emitters of the bipolar transistor are analyzed. Furthermore, a novel multiple-β transistor and the linear AND-OR gate, which is composed of the transistor, are investigated. Super high-speed characteristic and multiple-cascade capability of the linear AND-OR gate are verified by PSPICE simulation. Based on the analysis of high-speed switch, which is compatible with the linear AND-OR gate, a high-speed inverter is proposed, which is composed of multiple-β transistors. The corresponding flip-flop design is also given. Finally, the criterion for using linear AND-OR gate to design high-speed switching circuits are presented. Some combinational and sequential circuits are designed as the practical examples. Discussion indicates that the switching circuits bas     

绝热计算原理与能量恢复型CMOS电路

从改变ＣＭＯＳ电路中能量传输方式的观点出发,讨论了绝热计算原理,在此基础上对实现能量恢复的现有三种方案及相应的电路结构进行了分析与比较。     

THE QUATERNARY INTERFACE TECHNIQUE IN ECL INTEGRATED CIRCUITS

The theory of differential current switches which applies to the design of multivaluedECL circuits is introduced.In this theory,the switching state of differential transistor pairand signal in ECL circuits are described by switching variables and quaternary signal variables,respectively.he connection operations between the two kinds of variables are introduced todescribe the action process between switching element and signal in the circuits.Based on thistheory,two kinds of interface circuits-2-4 encoder and 4-2 decoder are designed.The computersimulation for the designed circuits by using SPICE program confirms that both circuits havecorrect logic functions,desired DO transfer characteristics and transient characteristics.Theseinterface circuits are compatible with binary circuits in the integrated process,the power supplyequipment,the logic stage and the transient characteristic.Therefore,they can be used as input-output interface of the existing binary ECL integrated circuits so as to decrease the number ofpins of a chip and the connections between chips.     

一种实现Reed-Muller展开系数与谱系数相互转换的有效算法及其图形方法

通过引入p-b，系数，将模2运算中“1”的个数信息包含其中，提出了一种实现Reed-Muller展开系数与谱系数之间直接相互转换的有效算法．在此基础上，结合bj系数图与谱系数图的特点，建立了实现bj系数图与谱系数图相互转换的规则及步骤．在变量数较少时，图形转换方法具有直观、便捷等特点．最后以函数对称性的检测为例讨论了它的应用．Reed-Muller展开系数与谱系数之间直接相互转换算法的建立为进一步研究两种展开形式之间的关系提供了有效的途径，同时也给两类系数的计算以及为一些数字逻辑问题的解决提供了新的方法．     

适用于三值线性反馈移位寄存器的CMOS触发器

为了省免多值线性反馈移位寄存器中存在的常量乘运算电路，本文以三值逻辑为例，提出了具有Q-2Q双轨输出的三值CMOS触发器的设计，它可与传统的三值模和电路配合，即可实现三值线性反馈移位寄存器。这不仅简化了电路结构，并可提高电路的工作速度，PSPICE模拟证实了Q-2Q触发器设计具有正确的逻辑功能，此设计思想可推广至基数更高的多值线性反馈移位寄存器电路的设计。     

破损古文物的计算机三维重构

基于图像处理与分析及计算机图形学的原理,该文使用三维建模软件与二维数字图像处理软件对破损古文物的计算机三维重构和展示进行了研究。该文发展的计算机三维重构程序已被用于对破损古文物双羊樽实现三维重构。它证明了此项技术可推广于其它古文物的三维重构上。     

绝热开关的工作特性及其能耗分析

本文对绝热充电原理以及绝热开关的工作特性进行了详细讨论,建立了绝热开关的能耗计算模型。ＰＳＰＩＣＥ模拟证明了所提出的计算模型的正确性。文章最后对包括输入激励在内的整个绝热开关的能耗进行了综合分析,它是分析复杂绝热电路的基础并为在设计能量恢复型电路时合理选取在关参数提供了理论依据。     

三值DYL电路中的双边沿触发器

该文通过对多β晶体管的开关特性分析,结合其射极输入、射极输出、高速工作等特点设计了三值的双边沿触发器。计算机模拟表明该设计具有正确的逻辑功能和高速工作的特性。它可用于三值DYL电路的设计。