• Proceedings of the IEEK Conference
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• 1998.06a
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• pp.847-850
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• 1998

One of the most difficult problem of designing VLSI is a mixed-circuit design, that is to design circuit containing both analog parts and digital parts. Digital to analog converter and analog to digital converter is a typical case. Especially it can be a serious problem when mixed circuit are put into a large digital circuit like microcontroller. However nowadays this problem is settled by separating analog circuit parts outside the IC. This technique is based on converting a digital signal into a pulse sequence. Then an analog signal is obtained by averaging this pulse sequence at the external low-pass filter. An anlog to digital converter is designed using a stochastic logic instead of a traditional PWM (pulse-width modulation) signal and ins implemente dusing FPGa. Stochastic pulse sequence can be made as a simple circuits and moreover can be mathematically processed by simple circuits -AND gates. The spectral property of stochastic pulse sequence method is better than that of PWM method. So it make easy to design a external low-pass filter. This technique has important advantages, especially the reduction of the ADC cost.

• Journal of The Korean Digital Architecture Interior Association
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• v.4 no.1
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• pp.1-9
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• 2004

Greg Lynn has been watched as a future architect that we have known him as a digital architect. As a result, this study tried to understanding his architectural concept by researching his works. The objects of this study were his thirteen projects selected in his website, have been already built, been constructing, their experimental value have been highly evaluated. In conclusion, first, Greg Lynn understood the architecture is animated. Secondly, he actively uses digital technology that creates unexpected new design for his works. Lastly, he intends the consolidation of a design process and building system as a whole.

• Journal of information and communication convergence engineering
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• v.14 no.4
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• pp.268-271
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• 2016

An efficient inductive switching noise suppression technique for mixed-signal integrated circuits (ICs) using standard CMOS digital technology is proposed. The proposed design technique uses a parallel RC circuit, which provides a damping path for the switching noise. The proposed design technique is used for designing a mixed-signal circuit composed of a ring oscillator, a digital output buffer, and an analog noise sensor node for $0.13-{\mu}m$ CMOS digital IC technology. Simulation results show a 47% reduction in the on-chip inductive switching noise coupling from the noisy digital to the analog blocks in the same substrate without an additional propagation delay. The increased power consumption due to the damping resistor is only 67% of that of the conventional source damping technique. This design can be widely used for any kind of analog and high frequency digital mixed-signal circuits in CMOS technology

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.633-634
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• 2006

Recently we started a development of the digital meister expert system for the product design supporting in manufacturing industry. Knowledge representation is of major importance in digital moister expert system. This rule-based expert system-knowledges are designed for a certain type of knowledge representation such as rules or logic. The way in which a rule-based expert system represents knowledge affects the development, efficiency, speed, and maintenance. Eventually, this digital moister system is used to the engineer in manufacturing industry for the process control, production management and system management. In this paper, we propose the digital moister system knowledge representation method for product design supporting in manufacturing industry and we present introduction and contents of rule-based knowledge representation supporting tool.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.11a
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• pp.210-213
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• 2007

The direction of this project is creates a future and it experiences ubiquitous world. The subject of the space is 'Ubiquitous Creative World' which Imagining the past becomes actuality and imagining in future become actuality and future when it will approach at once. The storyline of this space is as belows; 1 Zone - Ubiquitous life Gallery : it will be able to experience the future world ; home, office, street, school and the others. 2 Zone - Interactive Play Gallery : it will be able to explore the interactive media with information technology ; digital cafe, imagining jump, digital art and the others. 3 Zone - New product and Business Gallery : it composed with business, new product, and demonstration gallery such as public information space. The space concept makes connection and concentration which uses unit and line for world which becomes accomplished by the network. Connection of digital and the human being to make the center of new digital life.

• Journal of the Korean Society for Nondestructive Testing
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• v.30 no.3
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• pp.257-260
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• 2010

Advancements in the imaging and computing technology have opened the path to digital holography for non-destructive investigations of technical samples, material property measurement, vibration analysis, flow visualization and stress analysis in aerospace industry which has widened the application of digital holography in the above fields. In this paper, we demonstrate the non-destructive investigation and micro-structure measurement application of digital holography to the small particles and a biological sample. This paper gives a brief description of the digital holograms recorded with this system and illustratively demonstrated.

• Proceedings of the Korea Society of Design Studies Conference
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• 2002.05b
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• pp.144-145
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• 2002

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.69-75
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• 2006

디지털 테크놀로지의 비약적인 발전으로 우리는 연령과 계층을 막론하고 실생활 측면에서 사용자 환경의 변화, 디자인 시각의 변화 등 많은 변화의 사례들을 인지할 수 있다. 그 중에서도 최근 유아들의 전유물이었던 완구 시장이 학생, 성인들 대상으로 마케팅이 확장되면서 기존에 없었던 보다 지능적인 시스템과 다양한 콘텐츠를 보유하고 혁신적인 인터페이스를 갖춘 디지털 인텔리전트 브릭(Digital Intelligent Brick)완구가 시장을 빠르게 확대해 나가고 있다. 이처럼 아날로그 브릭에서 디지털 브릭으로의 새로운 변화를 주도한 대표적인 예로는 MIT와 공동연구로 개발된 로보틱스 인벤션 시스템(Robotics Invention System)인 레고(Lego)의 '마인드스톰'을 들 수 있다. 인텔리전트 브릭 시스템 완구는 Stud와 Tube의 Elements로 이루어진 기본적이고 반복적인 재료의 속성에서 시스템의 무한한 가변성과 사용자의 다양한 조건에 맞춘 인터페이스를 적용함으로써 창의적 결과물로의 확장성을 나타내고 있다. 본 연구에서는 디지털 테크놀로지를 기반으로 한 사용자중심 콘텐츠 속성을 지닌 인텔리전트 브릭 시스템에서의 시스템 구조 가변성 및 인터페이스 디자인의 확장성, 그리고 사용자 인터랙션 측면에 관하여 분석해 보고자 한다. 이를 토대로 인텔리전트 브릭 시스템이 향후 디지털 디자인 산업의 다양한 측면에서 보다 적극적으로 활용될 수 있는 기초를 제시하는 데 본 연구의 목적이 있다고 할 것이다.

• The Research Journal of the Costume Culture
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• v.15 no.3 s.68
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• pp.446-460
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• 2007

This study shows that digital technology is adapted practical method in fashion design process and virtual simulation and cyber fashion gallery based on virtual reality are researched. This study is proposed the 3D fashion design simulation in the virtual space used on 3D studio max, poser, photoshop program according to fashion design process. The main design concept is "temporary bridge" from rainbow. This study is supposed six fashion design in accordance with three sub-theme under main concept by changing color and texture used on 3D simulation. The results of this study are as follows: 1. This study produced Cyber Fashion Gallery in virtual space to the form of CD Rom title and web title by Macromedia Director 8.5, Macromedia Flash, Sound Forge. And it is enlarged the field of expression in aspect of Fashion Exhibition, beyond restriction of time and space. 2. Clothes modelling tools is able to easily adapt to various textiles and patterns in 3D dynamic virtual mannequin before making clothes. Digital technology is able to express image changed color and texture, especially new material, multi-finishing material and brilliant material and so on. So this study is able to develop tools for study of fashion coordination. 3. Cyber Fashion Gallery consists of gallery, story, painting, symbolism, example, image, quit. This study is enlarged the range of clothing expression by digital technology and open to possibility customized-manufacture.

• Archives of design research
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• v.15 no.2
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• pp.19-26
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• 2002

Comtemporary popular culture fosters information exchanges through the development of digital products. Digital products may lead, or may be led, by outline popular culture. However, popular culture is possible off-line as well. There are certainly diverse classes of people who use digital products; however, the major users are those who mainly use the networks. These users have ample access to information and thereby lead popular culture and also are led by it. Surely, it is not only the popular culture that digital products take into consideration. In modern times, personal computers and the Internet are changing into privately owned digital products. Amid the collective tendency of popular culture, the owned products emphasize the fact that it is ′mine only.′It would be goad if ′interesting′materials, something that teenagers like, are added to digital products. Surely, there is a limit to ′interesting′ materials, but the materials of "S or energy," which has a certain sense of humor as well as giving out fresh energy, can be considered in digital product esign. It can be considered a modern pattern, or at least the addition of a new value, and not the old-time pattern of the "Ten Long-Living Animals." More popular and diverse colors are needed in the mix of digital products used by adults who are middle-aged or elderly. If altered colors are applied to the digital products as much as popular culture changes, it can assist the elderly with their weakened physical abilities.