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Asian Test Symposium (ATS)

作者： S. Hamdioui A.J. Van de Goor D. Eastwick M. Rodgers Intel Corporation Santa Clara CA USA Faculty of Information Technology and Systems Section of Computer Engineering Delft University of Technnology Delft Netherlands

ISBN: (纸本)0769513786

This paper begins with a brief overview of realistic fault models for multi-port SRAMs with p ports, divided into p classes: single-port faults, two-port faults,..., p-port faults. Except for single-port faults, all other fault classes cannot be detected with the conventional (single-port) memory tests; they require special tests. Next, the paper presents a set of three linear single-addressing tests for unique multi-port memory faults (p > 2) that will be merged into a single test.

关键词： Fault detection Random access memory Circuit faults Circuit testing Built-in self-test Interference Circuit simulation Educational institutions Information technology SPICE

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Experimental investigations into skin effect influences on current distortion and increase in loss for 20 kHz PWM-VSI-fed slotless PMSM drives

Experimental investigations into skin effect influences on c...

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Conference Record of the IEEE Industry Applications Society Annual Meeting (IAS)

作者： T. Kosaka H. Hasegawa N. Matsui T. Shikayama R. Oguro Department of Electrical and Computer Engineering Nagoya Institute of Technology Nagoya Japan Motor Drives Research Section Yaskawa Electric Corporation Fukuoka Japan

This paper presents the experimental investigations into skin effect influences on current distortion and increase in loss for 20 kHz PWM-VSI-fed slotless PMSM drives. At first, the relation between the current distortion and the skin effect of lamination steels caused by high frequency component of flux is examined. Secondly, the relation between the increase in loss and the skin effect of coils caused by high frequency component of current is investigated. Finally, the machine design aspects of reducing the current distortion and the associated losses are examined.

关键词： Skin effect Pulse width modulation Stator cores Magnetic flux Frequency Coils Acoustic distortion Drives Saturation magnetization Teeth

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Tests for resistive and capacitive defects in address decoders

Tests for resistive and capacitive defects in address decode...

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Asian Test Symposium (ATS)

作者： M. Klaus A.J. Van de Goor PE Department ProMOS Technologies Inc. Hsinchu Taiwan Faculty of Information Technology and Systems Section of Computer Engineering Delft University of Technnology Delft Netherlands

ISBN: (纸本)0769513786

Presents a complete analysis, at the electrical level, of address decoder faults caused by resistive opens, and by capacitive-coupling between address lines. Several authors have demonstrated the importance of this class of faults. New test conditions, and new march tests are derived to detect the resulting faults; and industrial results, applied to DRAMS, show the effectiveness of the new tests.

关键词： Decoding Electrical fault detection Logic arrays Random access memory Semiconductor device testing Electronics industry Wires Bridges Delay Information technology

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A fast fuzzy K-nearest neighbour algorithm for pattern classification

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Intelligent Data Analysis 2000年第3-4期4卷 275-288页

作者： Boutalis, Yiannis S. Andreadis, Ioannis T. Tambakis, George D. Section of Electronics and Information Systems Technology Department of Electrical and Computer Engineering Democritus University of Thrace GR-67100 Xanthi Greece

A fast procedure for classifying a given test pattern to one of its possible classes using both the K-NN decision rule and concepts of the fuzzy set theory is described in this paper. The method is divided into two steps;in the first step the K nearest neighbours are found using a fast procedure, whereas in the second step the test pattern is classified using a fuzzy distance measure. The fast K-NN algorithm proceeds in finding a region containing at least K neighbours around the test sample by utilising an ordered search procedure of the test point from three reference points. In the sequence the found region is modified in such a way that the real K nearest neighbours of the given point will be always inside it. Then a small number of distance calculations are required to identify the true K-nearest neighbours and the fuzzy measure is applied to classify the test pattern. The pre-processing load is quite moderate and computer simulation results show that the misclassification rate is lower than, or similar to, the crisp version, while presenting results richer in information content than its crisp counterpart. This rate is also kept low even in the case we do not perform modifications that ensure the true K-NN finding. © 2000-IOS Press. All rights reserved.

关键词： Fuzzy set theory

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SOFTWARE TOOLS FOR ABSTRACT PROTOTYPING OF DESIGN SUPPORT TOOLS

SOFTWARE TOOLS FOR ABSTRACT PROTOTYPING OF DESIGN SUPPORT TO...

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ASME 2000 International Design engineering Technical Conferences and computers and Information in engineering Conference, IDETC-CIE 2000

作者： Opiyo, Eliab Z. Horváth, Imre Vergeest, Joris S.M. Delft University of Technology Faculty of Design Engineering and Production Department of Design Engineering Computer Aided Design and Engineering Section Jaffalaan 9 DelftNL-2628 BX Netherlands

ISBN: (纸本)9780791835111

Systematic design, user centered implementation and testing to requirements can contribute significantly to assuring quality of design support tools. The problem is that disorganized requirements elicitation and testing is generally time consuming and can sometimes lead to formulation of incomplete specification requirements. Furthermore, current software testing techniques involve usage of partially or fully implemented prototypes and thus provide feedback for the developers too late. These problems can be avoided through the application of a novel computer based pre-implementation testing technique, called abstract prototyping. It comprises structured multistage design and evaluation cycles, involving both the developers and the potential end-users as the evaluation subjects. This technique introduces quality improvement cycles early in the development process, well before the implementation of prototypes, and provides a structured framework for defining requirements and testing of design support tools. In this paper we first introduce the abstract prototyping technique. Then we describe the architecture and functionality of the software developed for abstract prototyping. We also give an example on the application of this software tool for evaluation of the particle system theory for vague modeling of shapes in conceptual design. This software tool facilitated definition of requirements and testing to the formulated requirements. In this case the particle system theory represented the highest level of abstraction of the vague modeling software tool. The same procedure can be used in the subsequent levels of abstraction of methods, algorithms and pilot implementations. We can argue that the abstract prototyping technique helps to achieve the kinds of improvement and quality gains that are expected in the development of new design support tools and in upgrading the existing tools. Copyright © 2000 by ASME.

关键词： System theory

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Colour image skeletonisation 10

Colour image skeletonisation

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2000 10th European Signal Processing Conference, EUSIPCO 2000

作者： Andreadis, Ioannis Vardavoulia, Maria I. Louverdis, Gerasimos Papamarkos, Nikolaos Section of Electronics and Information Systems Technology Department of Electrical and Computer Engineering Democritus University of Thrace XanthiGR-671 00 Greece

ISBN: (纸本)9789521504433

In this paper a new morphological technique suitable for colour image skeleton extraction is presented. Vector morphological operations are defined by means of a new ordering of vectors of the HSV colour space, which is a combination of conditional and partial sub-ordering. Then, these are used to extract skeletons of colour images in terms of erosions and openings. The proposed method was tested with a variety of images and such experimental results are provided. Its applications include image compression and recognition problems. © 2000 EUSIPCO.

关键词： Image compression

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Using simple coordinate logic operators to realize basic morphological operations

Using simple coordinate logic operators to realize basic mor...

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International Conference on Signal Processing Proceedings (ICSP)

作者： Y.S. Boutalis K. Tsirikolias B.G. Mertzios I.T. Andreadis Section of Electronics and Information Systems Technology Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece

We present a methodology for performing morphological operations using coordinate logic ones. Coordinate logic operations are simple and fast because they are logic operations among the corresponding binary values of the image pixels. Coordinate logic (CL) filters are a family of fast non-increasing, non-linear filters, which are based on coordinate logic operations. CL filters exhibit analogous properties to those of the morphological filters but due to their different definition they display slightly different response. This is revoked in this paper by using appropriate image gray level quantization. Based on this approach some fast efficient realizations of morphological filters using CL operators are proposed.

关键词： Logic Morphological operations Filters Hardware Quantization Pixel Image processing Filtering Binary sequences Information systems

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Using Simple Coordinate Logic Operators to Realize Basic Morphological Operations

Using Simple Coordinate Logic Operators to Realize Basic Mor...

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2000年第16届世界计算机大会

作者： Y.S.Boutalis K.Tsirikolias B.G.Mertzios I.T.Andreadis Section of Electronics and Information Systems Technology Department of Electrical and Computer Engineering Democritus University of Thrace GR-67100 XANTHIHELLAS

In this paper we present a methodology for performing morphological operations using coordinate logic *** logic operations are simple and fast because they are logic operations among the corresponding binary values of the image *** logic(CL) filters are a family of fast non-increasing,non-linear filters,which are based on coordinate logic *** filters exhibit analogous properties to those of the morphological filters but due to their different definition they display slightly different response. This is revoked in this paper by using appropriate image gray level *** on this approach some fast efficient realizations of morphological filters using CL operators are proposed.

关键词： morphological filters coordinate logic operations fast realizations

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Colour image skeletonisation

Colour image skeletonisation

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European Signal Processing Conference (EUSIPCO)

作者： Ioannis Andreadis Maria I. Vardavoulia Gerasimos Louverdis Nikolaos Papamarkos Section of Electronics & Information Systems Technology Department of Electrical & Computer Engineering Democritus University of Thrace GR-671 00 Xanthi Greece

关键词： Image color analysis Vectors Skeleton Morphological operations Image recognition Image coding Standards

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Industrial evaluation of DRAM SIMM tests

Industrial evaluation of DRAM SIMM tests

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IEEE International Test Conference

作者： Ad.J. van de Goor A. Paalvast Faculty of Information Technology and Systems Department of Electrical Engineering Section Computer Architecture and Digital Technique Delft University of Technnology Delft Netherlands

This paper describes the results of testing 50 single inline memory modules (SIMMs) each containing 16 16 Mbit DRAM chips (DUTs); 39 SIMMs failed, and of the 800 DUTs, 116 failed. In total 54 different test algorithms have been applied, using up to 168 different stress combinations for each test. The results show that GAL9R is the best test. Furthermore, it is shown that burst mode tests detect a completely different class of faults as compared with traditional word mode tests, and that tests with address scrambling enabled the detection of more faults.

关键词： Random access memory Stress Fault detection Production Performance evaluation Information technology computer architecture Electronic mail System testing Manuals

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