• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2646-2648
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• 2001

In this paper, the development of Power Line Communication(PLC) device for white goods is presented. The commercial PLC chip-set is used for the modem device of white goods. As a PLC device for white goods, an ARM720 u-controller and a windows CE 3.0 are adopted. UPnP (Universal Plug and Play) that is applied for home network middle ware in implemented system. In addition, application programming and emulator for home appliance are implemented using UPnP standard ver 1.0.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.499-502
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• 2010

Because of the substantial increase in program complexity and appearance of mega program, the needs to devide the program into small task with multiple partitions, and perform a scheduling based on the priority is required. And also, a program can be developed on specific environment according to the diversify of development environment. for instance, there are some restrictions upon O/S environment such as Embedded or Windows. therefore, the adaptive scheduling technique which perform multiple task partitioning process regardless environment or O/S is suggested. In this study, Adaptive scheduling technique algorithm and its application to be described.

• International journal of advanced smart convergence
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• v.8 no.2
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• pp.102-108
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• 2019

Big data was associated with three key concepts, volume, variety, and velocity. Securities and investment services produce and store a large data of text/numbers. They have also the most data per company on the average in the US. Gartner found that the demand for big data in finance was 25%, which was the highest. Therefore securities and investment companies produce the largest data such as text/numbers, and have the highest demand. And insurance companies and credit card companies are using big data more actively than banking companies in Korea. Researches on the use of big data in securities and investment companies have been found to be insignificant. We surveyed 22 major securities and investment companies in Korea for activating big data. We can see they actively use AI for investment recommend. As for big data of securities and investment companies, we studied open API. Of the major 22 securities and investment companies, only six securities and investment companies are offering open APIs. The user OS is 100% Windows, and the language used is mainly VB, C#, MFC, and Excel provided by Windows. There is a difficulty in real-time analysis and decision making since developers cannot receive data directly using Hadoop, the big data platform. Development manuals are mainly provided on the Web, and only three companies provide as files. The development documentation for the file format is more convenient than web type. In order to activate big data in the securities and investment fields, we found that they should support Linux, and Java, Python, easy-to-view development manuals, videos such as YouTube.

• Journal of Korea Technology Innovation Society
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• v.8 no.spc1
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• pp.297-322
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• 2005

The paper aims to analyze the logic and power of open source software (OSS), and to show the ways in which Korean government and companies support developing countries in the field of software development. Many developing countries are considering software industry to be a strategic industry due to the fact that software industry seems to be labor-intensive, or rather knowledge-intensive industry. In this regard, developing countries without huge financial investment can achieve certain level of economic development while leveraging software industry. Concerning software development tools, among recent trends OSS has been regarded as a viable alternative software development tool for developing countries. In developing countries, OSS is believed to resolve some difficulties caused by proprietary software such as Microsoft Windows, which is too expensive to buy for users and developers in low-income developing countries. In this sense, OSS has been considered as only solution for software developing because OSS is able to reduce the cost of software development and to enhance the technological capabilities of developing countries. In addition to the benefit of low cost, we have to shed light on the business model of OSS that is not to sell software licence, but to provide technical support and services. In order to use OSS as much as they can, developing countries have to invest for educating human resources who can develop and implement software system using OSS. These OSS-related policies can lead developing countries to developed countries.

• Journal of Korea Society of Digital Industry and Information Management
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• v.6 no.1
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• pp.169-179
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• 2010

iA-Canvas is HMI program which is the industrial automation application developed based on the Java language, and can run on any OS such as Windows, UNIX, Linux. The iA-Canvas is built on object-oriented open structure and consider network functionality and user experience as a system of centralized management and distributed management. iA-Canvas is composed of several components such as Builder, IO Server, Viewer, and Web Service Module and provides a GUI control environment. This paper explains design and implementation of iA-Canvas that is a tool for development of integrated management system, and shows practical examples of integrated management system that use iA-Canvas.

• 한국정보통신설비학회:학술대회논문집
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• 2002.08a
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• pp.213-219
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• 2002

본 논문은 상용 OS 인 windows CE 기반의 PDA에서 음성으로 각 응용 프로그램 을 실행하는 방법 및 구성을 제시한다. PDA는 기존 desktop PC 에 비해 사용자 입력수단이 많지 않고, 그 사용법조차 까다롭다. 예를 들어 SIP(Soft Input Panel)을 이용하여 채팅을 하거나 인터넷 웹 브라우저에 주소입력조차 쉽지 않다. 이에 KT의 자체 개발한 음성인식엔진을 이용하여 PDA내 응용프로그램 과 사용자입력 요구사항을 원활히 연결, 보다 편리한 사용자 입력인터페이스를 제공한다. KT의 음성인식엔진은 corpus 기반으로 HMM 모델을 이용, 사용자 음성을 인식하여 그 결과를 출력한다. 본 논문에서는 PDA에서의 이러한 음성인식엔진을 이용, 다수의 응용프로그램을 실행하고 제어하는 구성과 패턴을 제시한다.

• Proceedings of the KIEE Conference
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• 1999.11c
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• pp.687-689
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• 1999

본 논문에서는 이산 제어 시스템의 작업 수행 시, 특정작업에 있어서의 불규칙한 시간 지연 때문에 시스템이 불안정해지는 것을 막기 위해 시간 지연을 갖는 시스템의 안정도를 분석한다. Soft real time OS인 Windows NT 운영체제를 갖는 PC-based 이산 제어 시스템에서는 하드웨어적으로 인터럽트를 사용하여 시간 제한성이 있는 작업을 수행한다. 그러나 인터럽트와 함께 수반되는 DPC(Deferred Procedure Call)의 불규칙한 수행 시간 때문에 다른 작업이 수행되어야 할 표본시간이 길어지게 된다. 이러한 현상으로 다른 작업의 시간 지연이 발생하게 되며, 시간 지연은 시스템을 불안정하게 하는 요인이 된다. 안정성 분석 면에서 보면, 시간 지연을 고려하지 않은 시스템의 극점은 안정한 위치에 존재하게 되는데 반해, 시간 지연을 고려한 시스템의 극점은 불안정한 위치에 존재하게 된다. 따라서 본 논문에서는 시간 지연이 존재하는 제어 시스템의 안정성을 보장하기 위해서 시스템의 안정성을 분석한다.

• Proceedings of the IEEK Conference
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• 1998.06a
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• pp.491-494
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• 1998

Due to the improvement of PC performance and windows-based OS, PC-based control system is gradually taking over industrial control in the industry site, replacing the closed proprietary syste. PC-based system gives the avantages of ease-of-use, cost-effectiveness, simplicity of maintenace and the flexibility to design I/O system using standard technology. While there are many real time software soltions, most of hardware solutions are closed, vendor-depednent, proprietary systems for large scale plants. In this paper, we suggest the method to configure PC-based I/O system based on standard technology which gives the avantages to use off-the-shelf products for system integration.

• Proceedings of the KIEE Conference
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• 2005.10b
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• pp.409-411
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• 2005

본 논문에서는 HD급 멀티미디어 streaming을 처리할 수 있는 DSP 플랫폼을 개발하였다. DSP 플랫폼은 Tl사의 C6400계열 DSP를 사용하였고 다채널의 오디오와 HD급 화질의 비디오_ 데이터를 처리할 수 있다. DSP가 decoder의 기능을 부담함으로써 하드웨어의 재구성이 용이하며 코덱을 다운로드하기 때문에 유연한 멀티미디어 컨텐츠의 재생이 가능하다. 개발한 DSP 플랫폼을 호스트 PC에 설치하여 PC로부터 DSP Configuration 파일과 멀티미디어 스트리밍 데이터를 전송받는 구조를 가진다. 소프트웨어는 실시간으로 demux를 실행하여 오디와 비디오_ 데이터를 분리하석 DSP 플랫폼의 외부메모리에 저장하고 동시에 비디오와 오디오의 디코딩을 실행한다. 오디오와 비디오 데이터의 버퍼 언더런/오버런을 극할 수 있는 buffer control 기법을 적용하였다. 호스트 PC에서 DSP 플랫폼으로의 스트리밍을 하기 위하여 Open Architecture 기반의 Windows OS에서 스트리밍 서비스 프로그램을 구현 하였다. 마지막으로 MPEG-2 video MP@ML인 비디오 코덱과 5.1ch 48kHz AC3인 오디오 코덱으 구성된 streaming 데이터를 사용하여 DSP 플랫폼을 검증하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.11a
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• pp.678-682
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• 2000

The purpose of this study is to develop a powerful 6-axes general welding robot utilizing a low cost vision system. The developed vision system is composed of a CCD camera, a PC with windows 98 OS, and a PC-Robot communication program using Visual C++. A test was carried out to investigate whether the welding torch can precisely follow up the welding path. It shows that the result of this study can readily be applied to practical welding operations.