• Journal of Internet Computing and Services
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• v.3 no.5
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• pp.9-17
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• 2002

CSIX-L1 is the Common Switch Interface that defines a physical interface for transferring information between a traffic manager (Network Processor) and a switching fabric in ATM, IP, MPLS, Ethernet and data communication areas. In Tx, data to be transmitted is generated in Cframe which is the base information unit and in Rx, original data is extracted from the received Cframe. CSIX-L1 suppots the 32, 64, 96, and 123-bit interface and generates a variable length CFrame and Idle Cframe. Also CSIX-L1 appends Padding byte and supports 16-bit Vertical parity, CSIX-L1 is designed using Xilinx 4,1i. After functional and timing simulations are completed. CSIX-L1 module is downloaded in Xilinx FPGA XCV1000EHQ240C and verified. The synthesized CSIX module operates at 27MHz.

• Journal of the Korea Society of Computer and Information
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• v.3 no.3
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• pp.23-30
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• 1998

The ODBC(Open Database Connectivity) is particularly efficient in the dynamic client/server environment. Besides, the ODBC provides the functions that can handle multimedia data. Due to this feature, we are able to use the DBMS that supports the ODBC as a multimedia server. In this thesis, we describe the development of the ODBC driver for Relational DBMS. The Relational DBMS ODBC Driver consists of the client module and the server module. The client module is called the SRM(Server Request Module) and the server module is CSM(Client Service Module). These two modules are connected through the network module called the NSM(Network Service Module). We have conducted both the functional and the interoperability test of our ODBC Driver It turned out that the ODBC driver operated with these client DBMS tools successfully. In all, due to our development of the Relational DBMS ODBC Driver, DBMS is now capable of processing multimedia data and supporting the client applications including the DBMS tools.

• The KIPS Transactions:PartD
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• v.11D no.4
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• pp.799-808
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• 2004

Well documented, simplified and clarified source code is required for the mission critical application software area in which C programing language is generally used. We suggest an XML_based comment management system for C source code. The comment management system is composed of 6 modules including comment user module, reviewer module, comment extraction module, comment traceability link module, comment tag definition module and storage management module. The XML comment tags defined in this paper cover categories of the development process activities applying the IEEE standard 1028 and IEEE standard 1012. The XML Schema Is used to insert comments into C source code and to extract XML tags from C source code and the XSL-FO is used fur the visual display professing o( comment extraction results.

• Journal of the Korean Society for Nondestructive Testing
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• v.29 no.2
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• pp.122-129
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• 2009

Recently much attention has been paid to a guided wave due to its effective applicability to long range and fast inspection of structures. In guided wave based NDE, the appropriate selection of wave modes is one of important factors since the test performance is highly dependent on which mode of guided waves is employed. As far as plate-like structures are concerned, so far, SH guided wave has not been frequently applied compared to Lamb waves, which is mostly caused by the lack of proper and convenient transducers to generate and measure the SH waves. In this investigation, a new small-sized SH guided wave transducer based on magnetostriction is proposed. The present transducer was designed to be modular and be used with shear couplant to avoid the inconvenience of the existing magnetostrictive patch transducers, which comprises the ferromagnetic patch tightly bonded to a structure. The wave transduction mechanism and the detailed configuration of the present transducer are presented. Experimental verification is also conducted on test specimens and the results confirm the good performance of the present transducer module.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.6
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• pp.243-248
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• 2013

With rapid growth and fast diffusion of smartphone technologies, many users are deeply concerned about the smart applications and many mobile applications converged with various related technologies are rapidly disseminated. Especially, the convergence technologies like mobile apps that can establish the wireless ad hoc network between smartphone and other peripherals and exchange data are appear and progressed continuously. In this paper, we design and implement the smart app using bluetooth based wireless ad hoc sensor network that can connect smartphone with sensors and exchange data for various smart applications. The proposed smart application in this paper collects data obtained from more than 2 multi-sensors in real time and fulfills the decision making function by storing data at the database and analysing it. The smart application designed and implemented in this paper is the healthcare application that can analyze and evaluate the patient's health condition with sensing data from multi-sensors in real time through bluetooth module.

• Convergence Security Journal
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• v.7 no.3
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• pp.61-70
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• 2007

In Windows operating system, CSPs(Cryptographic Service Providers) are provided for offering a easy and convenient way of using an various cryptographic algorithms to applications. The applications selectively communicate with various CSPs through a set of functions known as the Crypto API(Cryptographic Application Program Interface). During this process, a secure method, accessing data using a handle, is used in order to prevent analysis of the passing parameters to function between CryptoAPI and CSPs. In this paper, our experiment which is using a novel memory traceback method proves that still there is a vulnerability of private key and secret key disclosure in spite of the secure method above-mentioned.

• Korean Journal of Optics and Photonics
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• v.20 no.4
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• pp.236-240
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• 2009

LED modules, based on MCPCB with a hard barrier oxide layer and an improved thermal dissipation property, are presented. Reflecting cups were also formed on the surface of the MCPCB such that optical coupling between neighboring chips was minimized for improving the photon absorption loss. LED chips were directly attached on the MCPCB by using the COB (Chip On Board) scheme. The LED modules showed significantly enhanced light outputs, compared to the LED modules based on conventional MCPCBs.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.358-362
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• 2005

디지털 비디오 압축기술은 멀티미디어 응용분야의 핵심으로 현재 빠르게 보급되어 최근에는 디지털비디오 압축 관련 국제 표준안 중 MPEG-4와 H.264가 발표되었다. 유연성이 좋은 MPEG-4와 달리H.264는 비디오 프레임의 효율적인 압축과 신뢰성을 강조 한다. 특히 H.264의 압축 기술은 카메라폰이나 DMB등의 작은 크기의 영상에서 고품질의 영상을 보다 효율적으로 제공 한다. 이에 본 논문은 현존하는 다른 비디오 코딩 표준과 비교할 때 코딩 효율이 기준의 두 배인 새로운 비디오 코딩 표준 H.264/AVC에서 사용하는, 변환 및 양자화를 연구하고 이를 기존의 정지영상 표준안인 JPEG나 JPEG 2000과 비교 분석하여 H.264/AVC의 공간적 압축인 인트라 코딩이 더 좋은 효과를 나타낸다는 것을 검증한 후 이를 토대로 하드웨어 설계언어인 VHDL언어를 이용하여 설계하고 FPGA칩인 XCV1000E에 다운로드 하여 칩 레벨의 시뮬레이션을 수행하여 설계된 변환 및 양자화 모듈을 검증하였다. 설계된 변환 및 양자화 모듈은 DMB 및 핸드폰 카메라와 같이 작은 정지 영상 압축에 응용이 가능하다.

• Journal of the Speleological Society of Korea
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• no.75
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• pp.65-71
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• 2006

팰티어-열전소자를 응용한 냉온컵홀더를 구성하는 응용기술을 제안하였다. 열전소자의 용량에 제한을 받기 때문에 가열 또는 냉각을 위해서는 충분한 용량을 뒷받침 해 줘야 한다. 따라서 컵홀더와 같은 휴대 필요성이 요구되거나 휴대 가능한 소형기기의 경우에는 온열 또는 냉각 상태를 유지시키는 보온기능을 갖는 온열기기로써의 적합성을 확인하였다.

• Proceedings of the International Microelectronics And Packaging Society Conference
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• 2002.11a
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• pp.3-6
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• 2002

본 논문에서는 LTCC 및 LTCC-M 기술에 관한 소개 및 그 기술을 이용한 응용 module 제작과 패키징 기술에 관하여 소개한다. 현재 microelectro-packaging 분야에서 연구가 활발히 진행되고 있는 SOP (System-On-a-Package) 패키징 기술을 구현하기위한 수동소자의 내부 실장과 LTCC/LTCC-M 기술을 이용한 패키징이나 소자 제작시 고려되어야 항목들에 대하여 언급하고 LTCC 기술의 응용 모듈 및 LTCC-M 기술의 응용 분야의 하나인 PDP 격벽 제조 기술에 관하여 소개한다.