• Proceedings of the Korea Information Processing Society Conference
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• 2000.10b
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• pp.1641-1644
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• 2000

원격교육에 있어서 상호작용도구는 필수적이다. 특히, 토론학습의 경우, 학습자들의 능동적 참여와 상호작용은 학습의 성공을 좌우하는 중요한 요소이다. 그러므로 기본적인 학습환경으로서 상호작용도구는 그 역할이 아주 크다. 본 논문에 제안된 벡터화이트보드는 기존의 화이트보드가 텍스트와 비트맵 중심이라는 문제점을 극복하여, 전달할 내용과 화면상의 위치를 자유롭게 수정할 수 있으며, 채팅시스템과 함께 지원될 때 면대면 토론과 인터넷 기반 토론 사이의 학습환경 차이를 줄일 뿐만 아니라 학습자의 상호작용을 증진시킬 수 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.605-606
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• 2021

In this paper, one channel oscilloscope was implemented using arduino uno board and 1.8 inch TFT LCD. The oscilloscope is designed using the built-in analog to digital converter(ADC) inside arduino uno board as data acquisition unit and can handle up to about 1 KHz signal.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.6
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• pp.1177-1182
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• 2016

The most industrial instruments for monitoring and control are occurring the extension problem and the external protocol compatibility. In this paper, we developed the boards for the industrial communication monitoring that are able to convert the protocol in various communication between devices and instruments. These are consisted the main board and several sub-board. They can have extension using the main board connection. The sub-board support the each communication method or data transfer. The main board was used the Atmega 2560 Microprocessor of AVR series, and the sub-boards are have the Atmega 256 or Atmega 128 in the AVR series. We have designed to connect the sub-board using placed the 4 RS485 serial slots in the main board. The sub-boards were developed to support the analog and digital I/O. These are able to have monitoring by CAN and Ethernet communication. The experimental results, we obtained good data transfer rate and conversion rate.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.430-432
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• 2001

IPv6은 IPv4가 업그레이드 된 것으로서 기하급수적으로 늘어나는 인터넷 주소를 감당하고, IPv4의 단점을 보안하는 새로운 인터넷 프로토콜이다. IPv6은 plug-and-plug방식으로 이웃 발견 프로토콜을 사용하여 현재 네트워크의 위상 및 링크의 상태를 측정하여 스스로 주소를 자동 설정 할 수 있다. 또한 IPv4와는 달리 멀티캐스팅 기능을 기본으로 제공하고 있으며 이를 지원 하는 응용을 필요로 하기 때문에 본 논문에서는 멀티캐스트에서 가장 널리 사용되는 화이트 보드를 IPv6에서 동작하도록 설계 구현 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.118-120
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• 2001

본 논문에서는 GPS(Global Positioning System)와 관성 항법 시스템(INS: Inertial Navigation System 이하 INS)을 혼합 구성한 수신보드의 운영을 위한 Embedded 운영체제를 설계하고 구현하였다. 이 운영체제는 실시간으로 인공위성과 IMU로부터 수신되어지는 Raw Measurement 획득, GPS 항법, 자세 결정, 통합항법, 위성 추적을 수행하는 태스크들을 우선순위 기반으로 처리하는 선점형(Premptive) 스케줄링 방식을 채택한 실시간 운영 체제이다. 본 논문에서는 자세 결정용 GPS와 INS를 이용한 통합시스템보드를 위한 실시간 운영체제의 개발 환경, 운영체제의 구조, 개발 내용과 실험내용에 대해 언급하였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.4 no.1
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• pp.53-59
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• 2009

By the use of open source and 16bit Microcomputer, IDB(Integrated Development Board) for embedded technical education was designed and developed. Based on 16bit MCU H8/300H, LED, LED Matrix, motors, sensors and various I/O circuitry, and the connection to a computer via the SCI, and $16{\times}2$ character LCD was designed and implemented on IDB. In addition, the software development environment was build by the assembler and H8 C compiler which is provided to the open-source software. And memory expansion was considered to include TRON(Real time OS) and uClinux. To verify the developed board, IDB was fabricated by PCB machine, and the fuction was confirmed by the basic I/O control program.

• Journal of The Korean Association of Information Education
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• v.8 no.3
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• pp.375-384
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• 2004

With the advance of information communication technology, specifically the Internet technology, most schools have developed their own Web sites for the communication of diverse parties such as students, their parents, teachers, and others. In spite of the wide spread of school Web sites, their bulletin board systems are usually developed under the Web-boards for developing ordinary sites without reflecting educational environments. The purpose of this research is to develop the Web-board system for schools, which can be applied to construct adaptive school Web sites. This Web-board system is designed to reflect the educational environments as well as the user characteristics under the idea of customization and optimization. The main advantage of this Web-board system is that it can allow easy access to the system through user-friendly interface, and also promote interactions among users through their personalized Web pages.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.12
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• pp.1650-1658
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• 2019

In recent years, IoT device and platform become widely popular and the computing performance and capabilities of IoT devices are also getting improved. However, the size and computing resources of IoT devices, especially small single board computer, are limited in a way that the design and implementation of the system should be carefully considered to operate on the devices. Recently, SDR technologies are adapting in IoT devices and can perform various radio systems. Thorough analysis and investigation of computer performances on small single board computer are necessary for its usage. In this paper, we present the results of computing resources measurement and analysis on small single-board computers. At first, we consider to design SDR based spectrum sensing for single board computer, investigate various key factors and propose a design procedure that can affect performance of the system with experiments.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.990-994
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• 2003

This paper describes the VoIP(Voice over Internet Protocol) SoC(System on Chip) Design and the test board development for the function verification to support voice communication services using Internet. To implement the simple system of configuration, we designed the VoIP SoC which have ARM922T of 32bit microprocessor, IP network interface, voice signal interface, various user interface function. Also we developed test program and communication protocol to verify the function of this chip. We used several tools of design and simulation, developed and tested a test board with Excalibur which includes ARM922T microprocessor and FPGA.

• Electronics and Telecommunications Trends
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• v.8 no.2
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• pp.44-52
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• 1993

복잡하고 다양한 기능을 갖는 컨트롤 시스팀은 멀티태스킹 구조를 요구한다. 또한 멀티태스킹 구조에서는 태스크 사이의 통신, 스케줄링 기능, 메모리 관리 기능등을 갖춘 실시간 O.S.를 필요로 한다. 타깃 컨트롤 보드에서 범용 실시간 O.S.를 수행시키려면 H/W 인터페이스용 BSP(Board Support Package) 프로그램이 요구된다. 본 고에서는 범용 실시간 O.S.와 프로세스 보드와의 인터페이스(BSP) 프로그램을 설계하였고 간단한 응용 프로그램으로 BSP 기능을 확인하였다.