• Journal of Korean Electronics
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• v.13 no.11
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• pp.51-59
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• 1993

• Korean Journal of Optics and Photonics
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• v.8 no.1
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• pp.42-46
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• 1997

In order to acquire the fluorescence burst signals emitted from single dye molecules that pass through a detection space defined by a confocal microscope, a computer-interfaced photon counter has been fabricated. The maximum count rate is about 80 MHz, which is limited by the counter devices used. Using both the operating computer program written by BASIC and the 486 PC computer, the minimum bin-width of 25 $mutextrm{s}$ has been achieved. The characteristics of fluorescence burst signals emitted from JA22 molecules at about 1$\times$$10^{-11}$m mol/L in ethylene glycol are discussed briefly.

• Journal of Korea Multimedia Society
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• v.2 no.4
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• pp.459-467
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• 1999

With fully harnessing the functions provided by Windows NT, we suggest the generating method of RPL profile and the RPL protocol for remote booting on DL-NCS(Network Computing System for Diskless client PCs). This system can offer clients, without having hard disk, boot remotely Window 9x stored in server's hard disk and can share peripheral devices and application programs in the server side. For booting Window 9x from DL-NCS, twenty-five clients' PCs were set for simultaneous on and finally the PCs were booted in similar time interval compared to that from a desktop PC having local disk. This system was also experimented to the application programs. And this system can yield excellent networking environments. In sum, with using this DL-NCS, we can reduce the installing costs of peripheral device, recycle the lower grade PCs such as 486SX/DX, and save the budgets for software purchase.

• Journal of the Korean Society of Marine Environment & Safety
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• v.1 no.1
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• pp.63-82
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• 1995

In recent years, through the rapid development in personal computer technology, it has become possible to make a radar simulator based on the personal computer. The advantage of the personal Computer aidd radar simulator lies in its cost effectiveness, when comparing with that using the real radar. Although there have been studies carried out to develop radar simulator using PC and the products of thi kind is in the commercial market already, they are all using the mockup of the real radar, and therefore, the price of the simulator is still rather expensive. In this respect, this thesis aims to develop a ARPA radar simulator which is running on the sole PC, so that the students of the maritime educational institution may get ARPA radar training easily and cheaply. The simulator developed in this thesis using Visual Basic is found to run successfully on the 486PC, and it is expected that this new simulator system designed first time in Korea would be used as an easily accessible ARPA radar training equipment.

• Electronics and Telecommunications Trends
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• v.9 no.2
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• pp.23-35
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• 1994

본 고에서는 체신부의 종합정보서비스 전산망에서 운영될 수 있는 문서유통시스템을 설계하였다. 체신부 문서유통시스템은 체신부의 우체국(주사국, 감독우체국, 체신청, 본부)에서 처리되는 각종 정기보고 문서와 지시문서, 공용문서, 서식관리등을 처리하는 시스템으로, 워드프로세서, 스프레드시트 등의 PC 응용과 전자우편시스템, 관계형 데이터베이스 시스템이 접목되도록 설계되었다. 따라서 본 문서유통시스템 S/W는 데이터베이스 관리블록, 전자우편 블록, 집계 블록, 자료관리 블록, 사용자 인터페이스 블록과 시스템 소프트웨어 및 유틸리티 등으로 구성된다. 체신부의 종합정보서비스전산망은 주컴퓨터인 TICOM-II, 서버로서 체신청과 감독우체국별로 설치된 PC486, 주사국 및 감독국에 설치된 업무용 PC들로 이루어져 있다. 본 시스템의 처리방식은 이러한 컴퓨터 구조에서 효율적으로 처리될 수 있도록 문서생성은 PC에서, 문서유통은 각 서버에서, 데이터베이스 관리는 주컴퓨터에서 수행되도록 지역분산처리 방식으로 설계되었다.

• Journal of Korean Port Research
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• v.5 no.2
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• pp.39-63
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• 1991

A PC-based ship maneuvering simulator was developed which was configured in a high performance IBM PC compatible i486 and i286 computer with a TMS 340 graphic signal processor and 10 MBPS Ethernet Cards. A real-time ship maneuvering simulation program was developed which includes computer generated imagery (CGI) for bird's eye view type and perspective view type. The simulator H/W was designed and manufactured and S/W for interface of various navigation equipments was made Especially, programs for output, analysis, and assessment of simulations results were developed. Communications between PC's are made by using Ethernet bus type LAN system. Simulations could be performed under various environments (current, wind, wave etc.) using data base of harbors and ships. This system can be used for various purposes such as crew's training, harbor and waterway design, and assessment of ship maneuverability in harbor.

• The Journal of Information Technology and Database
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• v.1 no.1
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• pp.3-8
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• 1994

정보화가 급격히 진행되고 있다. 너무 급속도로 변화하고 있어 이용자나 공급업자, 정부정책담당자, 과학기술자 모두가 정신이 어지러울 정도이다. 우리집은 지난 10여년간 4대의 PC를 샀다. 8비트 애플(APPLE)에서부터 아이비엠(IBM) 486에 이르기까지 새기종이 나올 때마다 업그레이드 (Up-Grade)하는 수 밖에 달리 도리가 없기 때문이었다.

• The Journal of the Acoustical Society of Korea
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• v.13 no.1E
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• pp.89-95
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• 1994

This paper describes development of a real-time voice dialing system which can recognize around one hundred word vocabularies in speaker independent mode. The voice recognition algorithm in this system is implemented on a DSP board with a telephone interface plugged in an IBM PC AT/486. In the DSP board, procedures for feature extraction, vector quantization(VQ), and end-point detection are performed simultaneously in every 10 msec frame interval to satisfy real-time constraints after detecting the word starting point. In addition, we optimize the VQ codebook size and the end-point detection procedure to reduce recognition time and memory requirement. The demonstration system has been displayed in MOBILAB of the Korean Mobile Telecom at the Taejon EXPO'93.

• Korean Journal of Food Science and Technology
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• v.26 no.4
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• pp.448-452
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• 1994

This paper presents a computer image processing system, which measures the thickness of the food extrudate on a real-time basis. The image processing system was established with a CCD camera, an image grabber, and a 486 PC. The image obtained by the system was analyzed by a devised C-program, specially designed for the real-time thickness measurement of the extrudate. Experimental results showed that the proposed computer algorithm yielded an accurate measurement of the thickness of the food extrudate within 1 second.

• The Transactions of the Korea Information Processing Society
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• v.3 no.6
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• pp.1636-1645
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• 1996

In this paper we proposed a new scheme for conditional two dimensional (2-D)moment-based classification of patterns on the basis of Gibbs random fields which are will suited for representing spatial continuity that is the characteristic of the most images. This implementation contains two parts: feature extraction and pattern classification. First of all, we extract feature vector which consists of conditional 2-D moments on the basis of estimated Gibbs parameter. Note that the extracted feature vectors are invariant under translation, rotation, size of patterns the corresponding template pattern. In order to evaluate the performance of the proposed scheme, classification experiments with training document sets of characters have been carried out on 486 66Mhz PC. Experiments reveal that the proposed scheme has high classification rate over 94%.