• Journal of Korea Technology Innovation Society
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• v.5 no.1
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• pp.26-43
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• 2002

Korean government has been putting efforts to promote development of technologies by government sponsored labs and to transfer, diffuse, and commercialize these technologies in private sector since mid 1980s. In spite of these efforts, utilization of government-sponsored technology remains in the very low level. According to the survey conducted by Korea Intellectual and Patent Office (1999), the ratio of unused industrial property rights including patents was above 70% of total industrial property rights. Survey on the information and telecommunication industry done by the Institute of Information Technology Assessment (IITA) in 1999 shows that the utilization ratio of government-sponsored technologies is about 55.8%. This is especially true where government is not the primary or end-user of technologies. The purposes of this paper are to (1) identify a process model of technology commercialization, (2) develop the related variables of each step in the six-step continuous process model of government-sponsored technology commercialization, (3) empirically investigate the data gathered through questionnaire survey, and (4) suggest policy alternatives for promoting technology commercialization in Information and Telecommunication industries.

• Proceedings of the IEEK Conference
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• 2002.07a
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• pp.552-555
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• 2002

Wideband CDMA is one of the radio access technologies for the third generation in which voice is the basic service. There has been lot of research work in order to find out the suitable transmission scheme to meet the requirement of accommodating variable type of services in Wideband-CDMA. This paper studies the behavior of different services using different transmission schemes in Wideband CDU and compares their performance in terms of BER. Different transmission schemes are found to be suitable for different services. Transmission schemes used are- fixed processing gain scheme also called as variable bandwidth scheme, single code transmission and multicode transmission. It is found that fixed processing gain scheme is suitable fur high data rates. Single code transmission is suitable fer low data rates where as multicode transmission is suitable for low and medium data rates.

• Proceedings of the IEEK Conference
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• 2002.07b
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• pp.715-718
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• 2002

TX/RX dual microstrip 1$\times$8 sub-array antennas are designed, fabricated, and measured for a wideband array antennas in communications. They have a Right Handed Circular Polarization (RHCP) for TX from 7.9 to 8.4 GHz and Left Handed Circular Polarization (LHCP) for RX from 7.25 to 7.75 GHz. Two stacked patches are used for a wideband characteristics and cornertruncated square patches are adopted for a circular polarization. To enhance bandwidth characteristics of a circular polarization, 1$\times$2 sequential rotation arrays are applied. From the measured results, 1$\times$8 microstrip sub-array antennas have a good agreement with those of the simulation. Therefore the sub-array antennas are applicable to satellite communication antennas, active phased array antennas, and radiators in other antennas.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1991.10a
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• pp.199-202
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• 1991

Recent telecommunication technology trends have made possible the concept of Intelligent Network, which is expected to lead to additional revenues for both telecommunication administers as well as business service customers. In this paper international Korea Telecommunication Network configuration with special services are described and introducing the Intelligent Network Services into the international Korea Telecommunication Network in a phased manner is studied considering of interworking between international and domestic Intelligent Network services.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.421-424
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• 2004

Product-Line 기반의 소프트웨어 개발은 특정 도메인의 소프트웨어 제품군 내의 공통성과 가변성 분석을 통한 공통 아키텍처의 추출과 재사용으로 개발의 생산성과 효율성을 향상시킨다. 일반적인 Product-Line 기반 방법론에 따르면, 재사용되는 핵심자산은 아키텍처, 컴포넌트, 등의 소프트웨어 내부 비즈니스 로직에 한정되어 있으며, 실제로 소프트웨어 개발에 있어 많은 비용이 지출되는 UI(User Interface), 데이터베이스 등의 설계 및 개발에 대한 내용은 언급되어 있지 않은 실정이다. 본 논문에서는 소프트웨어 개발에 필요한 UI 모듈을 핵심자산의 형태로 Product-Line 에서 사용할 수 있도록 하는 방법을 제안한다. UI 모듈을 설계하여 명세하는 방법과 설계된 UI를 디자인 템플릿과 연결하여 내부 로직과 연계하는 방법에 대해 설명한다. 이 방법을 이용하면 Product-Line을 위한 핵심자산 구성시 UI 모듈을 포함할 수 있어 생산성과 효율성을 향상시킬 수 있을 것으로 생각된다.

• Journal of Korea Technology Innovation Society
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• v.1 no.3
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• pp.364-373
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• 1998

This study examines the international competitiveness of the Korean information and telecommunication industry by using competitiveness index such as the RCA index, the Trade Specialization index, and the Total Factor Productivity. The results of this study show that the industry's competitiveness slightly decreases since 1995, but not its the total factor productivity. In conclusion, the industry has kept the competitiveness over all. Therefore, to keep or improve the competitiveness continuously, the industry is required the government's intensive investment and administrative support. And the industry should bring up by venture and small-medium-size-enterprises to have great economic impacts on other industries. Also, the increasing production and export promoting policy will be enhance the industry and improve nation's balance of trade.

• Journal of Electrical Engineering and Technology
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• v.9 no.2
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• pp.726-732
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• 2014

A current flowing through a distribution conductor produces induced voltage, which is harmful to a telecommunication line. Previous research on induced voltage has been focused on single-circuit lines in the distribution system. However, the double-circuit lines, referred to as parallel distribution lines, are widely used in distribution systems because they have significant economic and environmental advantages over single-circuit lines. Therefore, a study on the induced voltage in double-circuit lines is needed. This paper presents a method of calculating the induced voltage in a parallel distribution system using four-terminal parameters and vector analysis. The calculation method is verified by the Electromagnetic Transient Program (EMTP) simulation.

• Journal of Electrical Engineering and Technology
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• v.9 no.3
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• pp.997-1001
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• 2014

In this paper, the interference in small MIMO antennas having two identical composite right- and left-handed transmission-line(CRLH-TL)-based radiating elements is remarkably decreased. The radiating element has the broadside-capacitive coupling as well as slots to be equivalent to the CRLH-TL to prevent the size from increasing for an LTE high band. The suspended line bridging the two radiating elements is optimized to lower the interference between them down to -23 dB, while the overall MIMO antenna system is compact and its antenna performance is acceptable. The design is tested for 2.5 GHz.

• Journal of the Semiconductor & Display Technology
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• v.22 no.1
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• pp.39-42
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• 2023

Recently, with the explosive increase of video streaming services, real-time live broadcasting has also increased, which leads to an infringement problem for user privacy. So, to solve such problems, we proposed the real image blurring system using dlib face-recognition library. 68 face landmarks are extracted and convert into 128 vector values. After that the proposed system tries to compare this value with the image in the database, and if it is over 0.45, it is considered as different person and image blurring processing is performed. With the proposed system, it is possible to solve the problem of user privacy infringement, and also to be utilized to detect the specific person. Through experimental results, the proposed system has an accuracy of more than 90% in terms of face recognition.

• Journal of the Semiconductor & Display Technology
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• v.23 no.2
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• pp.28-32
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• 2024

The personal mobility Sharing service is currently active. Especially, electric scooters are widely utilized because they can move comfortably at a high speed over a short distance with a simple driving method. Its driving method is easy, but there is no protection device to protect the bare body. So, there is a greater accident than other means of transportation, and if two people are on board, there is higher accident probability. However, since there is no specific ways to prevent multi-person boarding yet, we propose a multi-person boarding detection model using tilt and pressure sensor. The proposed method measures the tilt degree and direction by using a tilt sensor installed in the center of the board plate and detects multi-people riding.