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Weighted FIR median hybrid filters for image processing 加权FIR中值混合滤波器用于图像处理
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184480
Hongbing Zhou, B. Zeng, Y. Neuvo
{"title":"Weighted FIR median hybrid filters for image processing","authors":"Hongbing Zhou, B. Zeng, Y. Neuvo","doi":"10.1109/CICCAS.1991.184480","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184480","url":null,"abstract":"Based on a recent study on the optimal FIR stack hybrid (FSH) filtering under the mean absolute error criterion, weighted FIR median hybrid (WFMH) filters are proposed in this paper. These filters do not need any complicated design procedure, as do the optimal FSH filters, but include many FSH filters commonly used in practice. Some properties of WFMH filters are studied and the applications of WFMH filters to image recovery from impulsive or Gaussian noise are considered.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126947502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Extracting hierarchical description for VLSI circuits VLSI电路的分层描述提取
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184449
A. Hudli, R. Hudli
{"title":"Extracting hierarchical description for VLSI circuits","authors":"A. Hudli, R. Hudli","doi":"10.1109/CICCAS.1991.184449","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184449","url":null,"abstract":"Hierarchical modeling of VLSI circuits is important for many applications, viz. simulation, test generation, verification, etc. But unfortunately, the hierarchical knowledge associated with the circuit that the designer used, is lost or is not available at the time of test generation, simulation, and verification. The circuit is just viewed as an interconnection of gates and flip-flops. The circuit knowledge becomes unwieldy, and results in exponential search space for problems like test generation. This paper presents a simple scheme for extracting hierarchical descriptions for sequential circuits. The authors show an application to test generation. They model circuits using temporal logic.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115356811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new exact logic minimization algorithm based on a combinational algorithm for sharp-products 基于组合算法的精确逻辑最小化新算法
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184520
Yu Qingjian, Xu Ge, Zhao Jianshen
{"title":"A new exact logic minimization algorithm based on a combinational algorithm for sharp-products","authors":"Yu Qingjian, Xu Ge, Zhao Jianshen","doi":"10.1109/CICCAS.1991.184520","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184520","url":null,"abstract":"The authors provide a new combinational algorithm for the sharp-product (SP) operation. For the SP of a cube w.r.t. a set of cubes, they introduce a row incidence matrix such that each prime cube of the SP corresponds to a minimal cover of the maximal effective column combinations of the matrix. Using this result, a new efficient exact logic minimization algorithm for multiple-values functions is given.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122184646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multirate switched-capacitor N-path filtering systems using bandpass path filters 使用带通滤波器的多速率开关电容n路滤波系统
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184326
J. Franca
{"title":"Multirate switched-capacitor N-path filtering systems using bandpass path filters","authors":"J. Franca","doi":"10.1109/CICCAS.1991.184326","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184326","url":null,"abstract":"The author investigates new types of multirate switched-capacitor filtering systems whose operating principles combine the ideas of N-path filters using bandpass path filters and single-path frequency-translated systems, and which are capable of realising high complexity bandpass responses which are fully immune to in-band clock feedthrough and mirror frequency components. Alternative system architectures are compared both with respect to the baseband requirements of the N-path filter at the heart of the system and also the corresponding anti-aliasing and anti-imaging frequency-translated filtering requirements.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128541100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The improvement of crucial circuit and systems for HF digital communication-modern carrier tracker and bit synchronizer 高频数字通信关键电路和系统的改进——现代载波跟踪器和位同步器
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184373
Chen Shangqin, L. Xiaofeng, Luo Chenglie
{"title":"The improvement of crucial circuit and systems for HF digital communication-modern carrier tracker and bit synchronizer","authors":"Chen Shangqin, L. Xiaofeng, Luo Chenglie","doi":"10.1109/CICCAS.1991.184373","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184373","url":null,"abstract":"New ideas and methods for improving the carrier tracker and bit synchronizer are discussed. Their implementation in a serial type HF modem is investigated.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129055024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fault diagnosis for space-division digital switching network in large-scale SPC telephone switching systems 大型程控电话交换系统中空分数字交换网络的故障诊断
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184404
Y. Fangchun
{"title":"Fault diagnosis for space-division digital switching network in large-scale SPC telephone switching systems","authors":"Y. Fangchun","doi":"10.1109/CICCAS.1991.184404","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184404","url":null,"abstract":"A practical fault diagnosis algorithm for the space-division digital switching network of SPC switching systems is proposed. Its main idea is to sensitize multiple faults to the output of parity checkers in the network using a very short test code sequence. Its advantages over other algorithms are lower diagnosis time, higher fault covering rate and no fault dictionary. The fault types include both stuck-at and bridging faults. Functional faults are also detected.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124564858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling and analysis of switching DC-DC converter with coupled-inductor 带耦合电感开关DC-DC变换器的建模与分析
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184459
Jianping Xu
{"title":"Modeling and analysis of switching DC-DC converter with coupled-inductor","authors":"Jianping Xu","doi":"10.1109/CICCAS.1991.184459","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184459","url":null,"abstract":"A coupled-inductor step-down switching DC-DC converter with continuous input and output current is investigated by use of a new time averaging equivalent circuit (TAEC) analysis method. By using the TAEC, one can analyze such a converter in a more simple way as the parameters of the TAEC model can easily be determined by the new approach. As a result, the analytical expression for the DC steady state and AC small signal equivalent circuit model of the converter are obtained. DC and AC small signal analysis can then be performed.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124689616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 25
Signal state and delay calculation in switch-level networks for mixed-level simulation 混合电平仿真中开关级网络的信号状态和延迟计算
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184512
Bian Jinian, Liu Yu
{"title":"Signal state and delay calculation in switch-level networks for mixed-level simulation","authors":"Bian Jinian, Liu Yu","doi":"10.1109/CICCAS.1991.184512","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184512","url":null,"abstract":"In this paper a robust switch-level simulation algorithm is proposed. It uses a MOSSIM-based algorithm to calculate the steady state. Instead of the unit delay used in the MOSSIM algorithm, it uses nodal delay potential equations, combined with the MOS transistor's equivalent dynamic resistance, as well as the effect of slope of the input stimuli, to calculate the nodal delay. The primary computation experiments have shown that it extends the application scope and improves the simulation accuracy. In this paper an approach for dealing with mixed-level circuit simulation is also presented.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129465324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of spherical-Wraparound microstrip antennas by spectral domain method 用谱域法分析球面环绕微带天线
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184370
W. Tam, K. Luk
{"title":"Analysis of spherical-Wraparound microstrip antennas by spectral domain method","authors":"W. Tam, K. Luk","doi":"10.1109/CICCAS.1991.184370","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184370","url":null,"abstract":"The far field radiation patterns of a wraparound microstrip antenna mounted on a sphere are studied theoretically. The radiator is replaced by an assumed surface current distribution. The effects of the dielectric layer and the metallic sphere are rigorously taken into account by a spectral domain Green's function formulation. Some practical results with different dielectric substrate thickness and radius of sphere are illustrated.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130420436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Generation of the primitive objects from edges in 3D 在3D中从边缘生成原始物体
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184421
Huang Xiangao, Guo Ximing
{"title":"Generation of the primitive objects from edges in 3D","authors":"Huang Xiangao, Guo Ximing","doi":"10.1109/CICCAS.1991.184421","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184421","url":null,"abstract":"The algorithm for generating the primitive loops of intercommunicating edges in 2D is presented. The concept of the generalized primitive loop in 2D is put forward. Similarly, the algorithm for generating the primitive objects of intercommunicating primitive loops in 3D is given, and the concept of the generalized primitive object in 3D is proposed.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129120257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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