• Journal of KIISE:Computing Practices and Letters
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• v.6 no.4
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• pp.373-382
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• 2000

This paper is concerned with development of a communication module of POFS(Parallel Operating File System), which is the parallel file system to be operated on SPAX computer. SPAX is multiprocessor computer with clustering SMP architecture and being developed by ETRI. The operating system for SPAX is MISIX based on the Chorus microkernel. POFS has client/server architecture basically so that it is important to design a communication module. The communication module is so easily affected by network environment that bad design is the major reason that decreases the portability and performance of the parallel file system. This paper describes the structure and performance of the communication of the POFS. the theme is issued in the course of designing and developing POFS. The communication module of POFS was designed to support the portability and the architecture of parallel file system.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.5
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• pp.35-40
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• 2023

In this paper, a serial wireless LAN virtual communication module that allows microprocessors to communicate wirelessly with other peripheral devices is developed as part of a study to build an online virtual experiment system that allows them to practice virtually anytime, anywhere in microprocessor application education in electrical and electronic control engineering. The developed module is connected to the microprocessor in the virtual experiment system through serial interface. The serial data is sent to and received from peripheral devices through the wireless LAN interface of the host computer where the virtual experiment software is being performed. In order to verify the function of the developed serial wireless LAN virtual communication module, experiments were conducted in which a microprocessor in the virtual experiment system exchanged data with an Android smartphone through a wireless LAN interface of a host computer. The developed serial wireless LAN communication module is expected to enable virtual microprocessors to communicate with surrounding real devices through wireless LAN, which can be efficiently used in microprocessor application education.

• Journal of the Microelectronics and Packaging Society
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• v.4 no.2
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• pp.79-83
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• 1997

본 연구에서는 휴대용 전화기 및 무선 LAN 의 핵심부품인 RF-Switch Module의 초소형화 설계기술, 표면실장기술, 고주파설계기술, 소형화 SMD기술, Test 기술 및 RF-Switch Module 활용기술 등을 개발하였으며 RF-Switch Module의 설계기반 마련 및 대외 경쟁력 있는 RF-Switch Module의 초소형화 기술을 확보하였다.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.743-744
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• 2006

This paper presents implementation of parallel processing system for image processing. The parallel processing system proposed consisted of 16 processing elements, and multi-access memory system, and interface modules. The multi-access memory system we introduced is made up of a memory module selection, a data routing module, and an address calculation and routing module.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05c
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• pp.2133-2136
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• 2003

해커들은 공격당한 시스템에서 공격자의 흔적을 숨기는 많은 테크닉을 오랫동안 개발해 왔다. 자신의 모습을 감추고 보다 용이한 재침입을 위해, 최근의 백도어(Backdoor)는 커널(Kenel) 구조와 코드 자체를 변경할 수 있는 기능을 가지고 있어서, 우리는 더 이상 커널 자체를 신뢰할 수 없게 되었다. 이 논문에서는 LKM(Loadable Kernel Module) Rootkit에 대한 체계적인 분석을 통해 이에 대한 보다 향상된 대응책을 찾고자 한다.

• Journal of Digital Contents Society
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• v.19 no.7
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• pp.1281-1287
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• 2018

In this study, specific elements and functions in modules of the AAC (Augmentative and Alternative Communication) application for children with severe and multiple disabilities were elicited, and screen interface was designed accordingly. As results, screen configuration, communication display edition, audiovisual output, and switch and scanning modules were defined. Screen configuration module consists of communication category, spelling board, favorites, screen lock, and setting function. The Communication display edition module includes communication categories, symbols, and favorites edition. The audiovisual output module provides the ability to adjust the pitch, intensity, speed, and tone of the voice individually in the form of auditory output. In the form of visual output, the background color and size of the frame, border color and thickness are adjusted. The switch and scanning module provides a function to select by pressing the switch when the symbol cell is highlighted audibly and visually. The development of the AAC application designed in this study is needed.

• Proceedings of the KIEE Conference
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• 2007.11c
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• pp.77-82
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• 2007

In this paper, we described a design and implementation of a sensor node for environmental monitoring. The main focus of design for sensor nodes is to isolate MCU for treating sensors from the RF module for considering various communication environment. The second is to make the interface between MCU and varity of sensor. In addition, we choose a narrow band communication module, cc1020, for the admittance of Korea government comminication law. We also use a uC/OS-II as an operating system which is famous for 8bit MCUs. We showed that the communication performance is sufficient to use the communication module in a out-door environment through several experiments in that it is possible to transmit between loom distance through experiments in a mountain.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.57 no.4
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• pp.349-355
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• 2008

In this paper, a wireless remote monitoring system for leakage current of distribution board is developed. In the developed system, signals of the leakage current of distribution board are transmitted to a monitoring system using wireless communication. The developed system is consisted of a comparative module, control module, a wireless communication module, and hand held terminal. The developed system has any facilities which can check a leakage current with real time, send to the user this fact using a wireless remote interface method. And also developed system can take precaution for an accident by leakage current.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.6 no.4
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• pp.195-200
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• 2013

This paper proposes an SNS and Web Data Analytics System which can utilize a business marketing strategy by analyzing negative SNS and Web Data that can do great damage to a business image. It consists of the Data Collection Module collecting SNS and Web Data, the Hbase Module storing the collected data, the Data Analysis Module estimating and classifying the meaning of data after an semantic analysis of the collected data, and the PHS Module accomplishing an optimized Map Reduce by using SNS and Web data involved a Businesse. This paper can utilize this analysis result for a business marketing strategy by efficiently managing SNS and Web data with these modules.

• Transactions of Materials Processing
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• v.13 no.3
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• pp.211-215
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• 2004

Recently, one of remarkable tends in the development of optical communication industry is the miniaturization and integration of products. The alignment system of micro optical module is a key apparatus for the miniaturization of optical module and the development of optical communication parts with high functionality. In this research, we have developed a system capable of automatic alignment of a $30\mu\textrm{m}$-thick film filter and a lensed fiber in order to improve the speed and losses in the optical fiber-to-filter alignment of optical modules. Using the developed automatic alignment system and silicon optical bench, we have measured optical loss and characteristics of the assembled optical add/drop module before packaging $1{\times}1$ OADM optical module. Whole size of add/drop module was less than $5mm{\times}5mm{\times}1mm$. The measured maximum insertion loss was 0.294㏈ that is below 0.3㏈ which is a standard loss of optical module.