• Journal of the Korean Institute of Telematics and Electronics A
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• v.28A no.9
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• pp.761-773
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• 1991

In this paper, an algorithm for automatic schematic generation which creates schematic diagram from netlist are proposed. The important objectives on schematic generation are readability and clarity of resulting schematics. Each stage of generation should aim at enhancing these objectives. For this reason, schematic generation problem is divided into 5 subproblems` preprocessing, logical placement, pin assignment and improvement of placement, global routing, and detailed routing. The algorithm is implemented in C language, and it generates schematics from the results of logic synthesis in order to make it east for designers to understand the design and reflect their knowledge into design.

• Journal of the Korean Institute of Telematics and Electronics
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• v.27 no.9
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• pp.1442-1447
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• 1990

In this paper we propose the search algorithm of the boundary nodes that defined as the circuit segmentation when CUT is tested by pseudo-exhaustive testing. The algorithm treats the testability values of the nodes in CUT as the population composed of teh raw data, and after examines the level of significance a and then estimate the confidence interval of teh testability values. Thus One can easily searched the c9oundary nodes and PO of sub circuits. The proposed algorithm has been implemented under UNIX OS with C-language, applied to the combinational logic CUT. As a result, it is shown that the pseudo-exhaustive test patterns are least generated when \ulcornerhas 0.786. We confirmed that the rate of test pattern is 1.22%, compared with exhaustive test.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.5 no.4
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• pp.353-359
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• 2005

In this research, we propose a Unified Fuzzy rule-based knowledge Inference Systems (UFIS) to help the expert in cosmetic brand detection. Users' preferred cosmetic product detection is very important in the level of CRM. To this purpose, many corporations trying to develop an efficient data mining tool. In this study, we develop a prototype fuzzy rule detection and inference system. The framework used in this development is mainly based on two different mechanisms such as fuzzy rule extraction and RDB (Relational DB)-based fuzzy rule inference. First, fuzzy clustering and fuzzy rule extraction deal with the presence of the knowledge in data base and its value is presented with a value between 0 -1. Second, RDB and SQL (Structured Query Language)-based fuzzy rule inference mechanism provide more flexibility in knowledge management than conventional non-fuzzy value-based KMS (Knowledge Management Systems).

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2005.04a
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• pp.327-330
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• 2005

시멘틱웹이란 컴퓨터가 정보의 의미를 이해하고 그 의미를 조작 할 수 있는 웹으로서 기존의 웹으로는 불가능했던 데이터의 자동처리를 가능하게 하는 차세대 웹 기술을 말한다. 이러한 웹을 위해서는 표준화된 데이터 표현 방법을 통해 기술된 내용을 기계가 이해할 수 있도록 해주는 온톨로지 시스템이 필요하다. 온톨로지 시스템은 일반적으로 OWL(web ontology language)로 표현된 온톨로지와 지식을 처리하는 추론시스템으로 구성되어 있으며 추론시스템으로는 연구 구현 예가 많은 LP(Logic Programming)방식의 추론시스템이 많이 사용된다. 하지만 LP방식의 추론기법들은 온톨로지를 처리하는데 있어 여러 가지 제약사항을 가지며 이로 인해 온톨로지 정보의 추론에 대한 효용성은 떨어진다. 이에 본 논문에서는 온톨로지 정보를 추론하기 위해 사용되는 기존 시스템들을 조사해 분류하고 문제점과 장점을 파악한 후 추론엔진의 효용성을 높이는데 필요한 최소한의 기능이 무엇인지 파악하여 기존의 LP엔진을 최대한 활용한 OWL추론엔진을 개발하는데 이용하고자 한다.

• Proceedings of the KIEE Conference
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• 2000.07d
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• pp.2296-2298
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• 2000

Fuzzy control has been researched for application of industrial processes which have no accurate mathematical model and could not controlled by conventional methods because of a lack of quantitative input-output data. Intelligent control approach based on fuzzy logic could directly reflex human thinking and natural language to controller comparing with conventional methods. In this paper, fuzzy controller is implemented to acquire operator's knowledge. The tested system is constructed for sending a ball to the goal position using wind from two DC motors in the path. This system contains non-linearity and uncertainty because of the characteristic of aerodynamics inside the path. Ball position is measured by a vision camera. The system used in this experiment could be hardly modeled by mathematic methods and could not be easily controlled by linear control manners. The controller, in this paper is designed based on the input-output data and experimental knowledge obtained by trials.

• Proceedings of the KIEE Conference
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• 2000.07b
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• pp.1071-1073
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• 2000

The use of HDL(Hardware Description Language) is now central to the ASIC(Application Specific Integrated Circuit). HDL-based ASIC can simplify the process of development and has a competition in market because it reduce the consuming time for the design of IC(Integrated circuit) in system level. Therefore, the development of power electronics system on chip (SOC), to design microcontroller and switching logic as one chip, is required extremely for the purpose of having reliability and low cost in power electronics which is based on switching elements. The major application of SOC is variable converter, active filter inverter for induction motor. UPS and power supply with a view to reducing electro-magnetic pollution.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.4 no.3
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• pp.288-291
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• 2004

This paper proposes an intelligent search modeling using avatar agent. This system consists of some modules such as agent interface, agent management, preprocessor, interface machine. Core-Symbol Database and Spell Checker are related to the preprocessor module and Interface Machine is connected with Best Aggregate Designer. Our avatar agent system does the indexing work that converts user's natural language type sentence to the proper words that is suitable for the specific branch information retrieval. Indexing is one of the preprocessing steps that make it possible to guarantee the specialty of user's input and increases the reliability of the result. It references a database that consists of synonym and specific branch dictionary. The resulting symbol after indexing is used for draft search by the internet search engine. The retrieval page position and link information are stored in the database. We experimented our system with the stock market keyword SAMSUNG_SDI, IBM, and SONY and compared the result with that of Altavista and Google search engine. It showed quite excellent results.

• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2096-2098
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• 2001

Fuzzy control has been researched for application of industrial processes which have no accurate mathematical model and could not be controlled by conventional methods because of a lack of quantitative input-output data. Intelligent control approach based on fuzzy logic could directly reflex human thinking and natural language to controller comparing with conventional methods. In this paper, the tested system is constructed for sending a ball to the goal position using wind from two DC motors in the path. This system contains non-linearity and uncertainty because of the characteristic of aerodynamics inside the path. The system used in this experiment could be hardly modeled by mathematic methods and could not be easily controlled by linear control manners. The controller, in this paper could control the system containing non-linearity and uncertainty.

• Proceedings of the KIEE Conference
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• 1987.07a
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• pp.279-283
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• 1987

In this paper an intelligent supervisory programmable controller for automatic assembly machine is developed. This is achieved by adding sequence control hardware with input-interrupts to supervisory real time language and also by incorporating an automatic planning method which uses a predicate logic model and an action model. The designed intelligent supervisory programmable controller is applied to Die Bonding Machine and is to found to work well.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.10a
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• pp.212-215
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• 2005

The needs of larger screen in mobile device would be increased as the time of ubiquitous and convergence is coming. And, the type of mobile device has been evolved from bar, slide to row. Recently, the study on the multi-display screen which has seamless gap between two display panel has been published, and moreover the System On Chip(SOC) design strategy of core chip has been the most promising Field-Programmable Gate Array(FPGA) technology in the display system. Therefore, in this paper, we proposed the design technique of SOC and evaluated the effectiveness with Very high speed Hardware Description Language(VHDL) Intellectual Property (IP) for the operation of multi display device driver. Also, This IP design would be to allow any kind of user interface in control system.