• Proceedings of the KIEE Conference
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• 2000.07d
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• pp.2904-2906
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• 2000

본 논문에서는 반도체 제조 공정에서 장비와 호스트간에 통신을 할 수 있는 SECS(SEMI Equipment Communications Standard) 프로토를의 개발을 제안한다. SECS 프로토콜은 메시지 전송을 위한 헤더 부분을 정의하는 SECS-I 프로토콜과 메시지 내용을 정의하는 SECS-II 프로토콜로 나뉘어지는데, RS232 시리얼 통신을 하는 SECS-I 프로토콜 대신에 이더넷(ethernet)을 통해 TCP/IP 통신을 할 수 있는 HSMS 프로토콜을 구현하고자 한다. HSMS(High-speed SECS Message Services)프로토콜은 SECS-I과 마찬가지로 SECS-II 메시지 내용을 전송 할 수 있도록 10바이트 크기의 헤더로 정의된다. HSMS 프로토콜 통신은 TCP/IP를 기반으로 하기 때문에 SECS 메시지 전송을 위한 통신 선로를 설정하기 위해 소켓 API를 응용하고 항상 통신 대기상태를 유지하기 위해 데몬(daemon) 형태로 구성한다. 실제 메시지 내용을 정의하고 있는 SECS-II 프로토콜은 데이터 인덱스 테이블과 표준에 정의된 형식에 맞게 파일형태나 DLL(Dynamic Link Library)형태로 구성하고 프로세스 프로그램(process program)을 수행하기 위해 SECS 프로토콜 표준에서 정의하는 SML(SECS Message Language)형식으로 변환 할 수 있는 스크립트 변환기(script translator)를 구현한다. 또한 HSMS 프로토콜이 전송할 SECS-II 메시지를 저장하기 위한 파라미터를 정의하고 실제 통신을 위한 테스트 베드를 위한 응용 프로그램을 제작한다

• 한국경영정보학회:학술대회논문집
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• 2008.06a
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• pp.718-731
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• 2008

본 연구는 상호작용성의 속성과 이용자에게 주어진 통제력에 따라 상호작용성을 4 가지 차원으로 나누고, 이것이 어떤 경로를 거쳐 이용자 만족에 이르는지를 규명하는 것을 목적으로 한다. 이를 위해 상호작용성을 최적화하는 킬러 콘텐츠로 e 러닝을 선정하고, 상호작용성에 영향을 미치는 선행요인으로 서비스, 콘텐츠, 미디어 품질을 도출 하였으며, 상호작용성과 이용자 만족을 매개하는 변인으로 사회적 현존감과 인지적 몰입을 포함하는 연구모델을 제시하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.10b
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• pp.1597-1600
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• 2001

In-Service-Monitoring을 통하여 네트웍 계층에서 성능저하와 전달되어지는 QOS의 영향을 감시하여 Pro-Active 매니지먼트가 가능하다. 그 결과로서 SLA 보증을 위반하기 전에 성능저하를 조기 발견하여 행동을 취한 수 있게 한다. 본 논문에서는 사용자의 요구조건을 만족하기 위한 네트웍의 구성과 SLA 측정의 제약조건들을 고려하고 Policy Based Routing이 적용되는 네트웍에서 Technology-Specific Parameter인 IP Packet Loss Ratio, IP 패킷전송지연, 패킷지터, 가용도등의 SLA Parameter를 측정하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.9
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• pp.1858-1864
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• 2009

In this paper, we design a non-volatile memory IP, 1-kb one-time programmable (OTP) memory, used for power management ICs. Since a conventional OTP cell uses an isolated NMOS transistor as an antifuse, there is an advantage of it big cell size with the BCD process. We use, therefore, a PMOS transistor as an antifuse in lieu of the isolated NMOS transistor and minimize the cell size by optimizing the size of a OTP cell transistor. And we add an ESD protection circuit to the OTP core circuit to prevent an arbitrary cell from being programmed by a high voltage between the terminals of the PMOS antifuse when the ESD test is done. Furthermore, we propose a method of turning on a PMOS pull-up transistor of high impedance to eliminate a gate coupling noise in reading a non-programmed cell. The layout size of the designed 1-kb PMOS-type antifuse OTP IP with Dongbu's $0.18{\mu}m$ BCD is $129.93{\times}452.26{\mu}m^2$.

• Smart Media Journal
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• v.1 no.1
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• pp.1-9
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• 2012

This Paper proposes an effective SoC hardware architecture implementing a VDP for Full HD TVs. The proposed architecture makes real time video processing possible with supporting efficient bus architecture and flexible interface. Video IP cores in the VDP are designed to provide a high quality of improved image enhancement function. The Avalon interface is adopted to guarantee real-time capability to IPs as well as SoC integration. This leads to reduced design time and also enhanced designer's convenience due to the easiness in IP addition, deletion, and revision for IP verification and SoC integration. The embedded software makes it possible to implement flexible real-time system by controlling setting parameter details and data transmitting schemes in real-time. The proposed VDP SoC design is implemented on Cyclon III SoPC platform. The experimental results show that our proposed architecture of the VDP SoC successfully provides required quality of Video image by converting SD level input to Full HD level image.

• Molecules and Cells
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• v.43 no.3
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• pp.222-227
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• 2020

Inositol polyphosphate multikinase (IPMK) is required for the biosynthesis of inositol phosphates (IPs) through the phosphorylation of multiple IP metabolites such as IP3 and IP4. The biological significance of IPMK's catalytic actions to regulate cellular signaling events such as growth and metabolism has been studied extensively. However, pharmacological reagents that inhibit IPMK have not yet been identified. We employed a structure-based virtual screening of publicly available U.S. Food and Drug Administration-approved drugs and chemicals that identified the antidepressant, vilazodone, as an IPMK inhibitor. Docking simulations and pharmacophore analyses showed that vilazodone has a higher affinity for the ATP-binding catalytic region of IPMK than ATP and we validated that vilazodone inhibits IPMK's IP kinase activities in vitro. The incubation of vilazodone with NIH3T3-L1 fibroblasts reduced cellular levels of IP5 and other highly phosphorylated IPs without influencing IP4 levels. We further found decreased Akt phosphorylation in vilazodone-treated HCT116 cancer cells. These data clearly indicate selective cellular actions of vilazodone against IPMK-dependent catalytic steps in IP metabolism and Akt activation. Collectively, our data demonstrate vilazodone as a method to inhibit cellular IPMK, providing a valuable pharmacological agent to study and target the biological and pathological processes governed by IPMK.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.153-155
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• 2010

Internet phone (VoIP) services in Korea have achieved noticeable growth year after year since the service launching, and the growth still coninues. The market of mobile internet phone also expands sharply. Therefore, it is crucial to deploy networks which can support mobile internet phone services with excellent quality. For mobile internet phone services, it will be necessary to build and use networks with good mobility and high transmission rate. Current wireless networks for Internet services include 3G, Wi-Fi, and mobile WiMAX networks. 3G provides good mobility but lower transmission rate, whereas Wi-Fi exhibits excellent transmission rate but less mobility. Mobile WiMAX networks taking the merits of both, high mobility and transmission rate, are being deployed widely in recent years. This article examines the recent standardization efforts of WiMAX Forum for VoIP service in WiMAX networks.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.65-68
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• 2008

The Mobile IP provides the mobility of Mobile Node, but does not provide the mobility of network. For support the mobility of network, the IETF has proposed NEMO(Network Mobility). Route Optimization is a serious problem in mobile network, so several solutions for route optimization in nested mobile network have been suggested by the IETF NEMO WG. This paper proposes scheme about Route Optimization in nested mobile network.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.510-512
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• 2015

Recently, people fear is growing because of the various crimes that may occur when you go out. The growing is interest in security systems for the protection of an individual's property. In this paper, to establish a single central server based on the home network when intruders access to city, such as image processing values obtained through the IP camera and distance values disciplined use an ultrasonic sensor the user for an attacker city that will connect to the server the surveillance system provides the information that is received and implemented.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.947-948
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• 2023

본 논문은 보이스피싱 취약 계층을 위해 통화 내용을 신속하게 처리하여 실시간으로 범죄 여부를 판별하는 VoIP 에 특화된 시스템을 제안하였다. 실제 보이스 피싱 통화 유형을 학습한 탐지 모델을 개발하여 API 로 배포하였다. 또한 보이스피싱 위험도가 일정 수준에 도달할 경우 사용자에게 보이스피싱 가능성을 경고하는 장치를 제작하였다. 본 연구는 보이스피싱을 사전에 탐지함으로써 개인정보의 유출 및 금융 피해를 예방하고 정보 보안을 실천하는 데 기여할 것으로 기대된다.