• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.11a
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• pp.140-143
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• 2000

This research presents new type of remote monitoring and control solution of PLC that can be used bi-directional and efficient management of factory automation through internet. This system has client/server architect for information handling between PLC and remote computer where a user can control and monitor target PLC. Actually the authors redirect RS232C connection between PLC and server computer into Internet connection between PLC and remote client computer using supplied PLC tool program So user feel like in front of PLC panel when he operates remote PLC through Internet. Each client/server program is constructed with Java language for security. In this paper the internet-based remote control system was proposed and proved validity by being applied to redirection of PLC control for factory automation.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.633-634
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• 2008

In this paper, we describe implementation of a network Speaker for easily read streaming audio data from the network. The Network Speaker uses MAXIM company's DS80C400 for network control and MAX542 for audio data play. The DS80C400 network microcontroller offers TCP IPv4/6 network stack with the TINI-OS provided in ROM. The TINI-OS is adopted as an embedded operating system. Application programs are implemented by using JAVA language.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.170.5-170
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• 2001

As close competitions are being fought out among enterprises, they should accomplish their objectives such as reduction of cost, improvement of quality and condensation of due date, etc. For this objects, it becomes very important to manage the workflow harmoniously and to share the information efficiently between geographically dispersed users. We developed the collaborative design system, which manages various design process and enables to share design information. In this paper, Internal-based collaboration system for press die design process in the automobile manufacturer is developed with CORBA, Java and relational database system. After modeling real press die design process with UML language, workflow routing path is created by modeling data. Cost and time for ...

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.65.1-65
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• 2002

Recently, increased accessibility to the Internet makes it possible to access to Internet-connected devices easily. For this reason, anyone can reach and command any device that is connected to the network. But these teleoperation systems have several problems like the network time delay, data loss and development cost of an application for communication with each other. The network time delay phenomenon is the most important in teleoperation system, which disturbs a real time control. The loss data also causes some users not to send correct commands to device or not to receive correct information from devices. To develop an application to communicate between user and device, it needs a comp..

• IEMEK Journal of Embedded Systems and Applications
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• v.4 no.2
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• pp.84-89
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• 2009

This paper describes the development tool for applications of automotive electronic control unit based on OSEK/VDX. This development tool has a plug-in structure and is written in Java language, because of being based on Eclipse CDT. And also this development tool has another functionality of expansion, which means a special function block can be easily adopted in this development tool. Currently, this development tool consists of five blocks, which are integrated development environment block, fusing program block, system generation block, debugger block, and cross-compiler toolchain block. They have relationship between each other and work for developing OSEK/VDX-based applications. In this paper, we show the functionality of each block of this development tool and its implementation.

• International journal of advanced smart convergence
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• v.5 no.2
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• pp.8-17
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• 2016

Scratch-based programming has come to be known as an effective programming tool because of its graphic instruction modules, which are designed to be assembled like the famous LEGO building blocks. These building block-like structures allow users to more easily program applications without using other more difficult programming languages such as C or Java, which are text-based. Therefore, it poses a good opportunity for application in educational settings, especially in primary schools. This paper presents an effective approach to developing an educational robot for use in elementary schools. Furthermore, we present the method for scratch programming based on the external modules need for the implementation of robot motion. Lastly, we design a systematic curriculum, titled "Play with a Robot," and propose guidelines to using the educational programming language Scratch.

• Proceedings of the CALSEC Conference
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• 2001.08a
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• pp.503-510
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• 2001

Q+-reader, an E-Book reader system for XML based contents is introduced. The system is developed for the embedded platform, called Q+, which targets for the digital home electronics systems. The system supports XML contents and CSS based styling as described in Open e-Book standard. The system renders the e-book contents for users, so the contents are secured for a proper use. This will found an essential part of business infra for electronic books with copyright protection. The system was developed in Java language to be used in various platforms, and has an open architecture to be reusable for other standards as well.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10a
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• pp.451-453
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• 2000

소프트웨어의 경제성, 시장 경쟁력 확보를 위한 소프트웨어의 재사용은 소프트웨어 공학의 주요 이슈가 되고 있다. 그 중 컴포넌트와 컴포넌트 기반의 소프트웨어 개발은 재사용성을 확보할 수 있는 가장 주목받는 방안으로 제시되고 있으며 많은 기법이나 지침들이 제안되고 있다. 기존의 캡슐화와 정보은폐를 핵심 개념으로 하는 OOD(Object Oriented Development)에 의한 소프트웨어 개발방법은 이미 재사용성, 유지보수성, 무결성, 안정성 등의 많은 장점으로 인해 학계와 산업계에서 이미 많이 보편화되어 있고 널리 이용되어 지고 있다. 하지만 CBD(Component Based Development)와 EJB(Enterprise Java Beans)에 기반하여 컴포넌트 어플리케이션을 개발하는데 있어서는 그 적용사례가 드물고 활요성 또한 검증된 바가 거의 없다. 따라서 본 논문에서는 대형 분산 시스템이라 할 수 있는 뱅킹 시스템에 CBD, EJB, UML(Unified Modeling Language)을 적용해 봄으로써 소프트웨어 개발시의 그 실무적인 유용성을 검증해 본다.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10c
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• pp.297-299
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• 1998

As there comes out better and better solutions for delivering multimedia data on the internet, the number of WebCAM sites which transmits pictures of any spot to the user's system is getting increased. WebCAM service over the internet can be compared with the CATV in that it is beyond the spatial constraints. In this project, we construct a WebCAM site Which performs not only the fundamental WebCAM functions of capturing images and of transmitting them periodically but also various kinds of modules carrying out tasks such as image processing, remote control of the camera, processing multiple user requests, making panorama views and so on using Java which is the most popular language for the internet or CGI. The past images are stored in a database implemented for the WebCAM system, so the system can be extended to get over the constraints in time also.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.549-552
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• 2005

기존의 ANSI C 프로그램은 각각의 플랫폼에 따른 컴파일러를 통해서 목적기계의 코드로 변환되고, 실행되어 플랫폼에 의존적인 단점이 있다. 이러한 단점을 보완하는 방법으로는 스택기반의 가상기계와 가상기계의 입력형태인 중간코드를 이용하는 기법이 있다. EVM(Embedded Virtual Machine)은 ANSI C 언어와 SUN사의 Java 언어 등을 모두 수용할 수 있는 임베디드 시스템을 위한 가상기계이며, SIL(Standard Intermediate Language)은 EVM에서 실행되는 중간언어로 다양한 프로그래밍 언어를 수용하기 위해서 객체지향 언어와 순차적인 언어를 모두 수용하기 위한 연산 코드 집합을 갖고 있다. 본 논문에서는 SIL 코드가 올바른 수행을 하는 것인지를 검증하고 원시코드의 분석을 용이하게 하기 위해서 생성된 SIL 코드를 어셈블리 형태와 유사한 재 표현된 ANSI C 언어로 바꾸는 역컴파일러 시스템을 설계하고 구현하였다.