현실주의정책선정의 당위성과 국제적기반조성

신재흥 민족문학사학회 1999 민족문학사연구 Vol.15 No.1

전류 센서를 이용한 디지탈 논리회로의 고장 검출

신재흥,임인칠 대한전자공학회 1996 전자공학회논문지-A Vol.33 No.2

In this paper, a new structure that can do fault detection and location of digial logic circuits more efficiently using current testing techniques is proposed. In the conventional method, observation point for steady state power supply current was only one, but in the proposed method more fault classes are divided for fault detection and location through the ovservation of steady state power supply current at two points. Also, it is shown that this structure can be easily applied in detection of stuck-open fault which is not easy to do testing with conventional current testing techniques. In the presented mehtod, an extra trasnistor is used, and current path is made compulsorily in the CMOS circuits in which no current path can be established in steady state, then it can be known that stuck-open tault is in the MOS transistor on the considering current path, if this path disappears due to stuck-open fault. The validity and the effectiveness is shwon, thorugh the SPICE simulation of circuits with fault and the current path search experiment using current path search program based on transistor short model wirtten in C language on SUN sparc workstation.

게이트 레벨 천이고장을 이용한 BiCMOS 회로의 Stuck-Open 고장 검출

신재흥,임인칠 대한전자공학회 1995 전자공학회논문지-A Vol.32 No.12

BiCMOS circuit consist of CMOS part which constructs logic function, and bipolar part which drives output load. Test to detect stuck-open faults in BiCMOS circuit is important, since these faults do sequential behavior and are represented as transition faults. In this paper, proposes a method for efficiently detecting transistor stuck-open faults in BiCMOS circuit by transforming them into slow-to=rise transition and slow-to-fall transition. In proposed method, BiCMOS circuit is transformed into equivalent gate-level circuit by dividing it into pull-up part which make output 1, and pull-down part which make output 0. Stuck-open faults in transistor are modelled as transition fault in input line of gate level circuit which is transformed from given circuit. Faults are detceted by using pull-up part gate level circuit when expected value is '01', or using pull-down part gate level circuit when expected value is '10'. By this method, transistor stuck-open faults in BiCMOS circuit are easily detected using conventional gate level test generation algorithm for transition fault.

전류 경로 그래프를 이용한 BiCMOS회로의 단락고장 검출

신재흥,임인칠 대한전자공학회 1996 전자공학회논문지-A Vol.33 No.2

Beause BiCMOS logic circuits consist of CMOS part which constructs logic function and bipolar part which drives output load, the effect of short faults on BiCMOS logic circuits represented different types from that on CMOS. This paper proposes new test method which detects short faults on BiCMOS logic circuits using current path graph. Proposed method transforms BiCMOS circuits into raph constructed by nodes and edges using extended switch-level model and separates the transformed graph into pull-up part and pull-down part. Also, proposed method eliminates edge or add new edge, according ot short faults on terminals of transistor, and can detect short faults using current path graph that generated from on- or off-relations of transistor by input patterns. Properness of proposed method is verified by comparing it with results of spice simulation.

공통 에미터 배열을 이용한 고속 full-swing BICMOS 논리회로 설계 ( Design of a High Speed Full-Swing Bi CMOS Logic Circuit Using Common-Emitter Configuration )

신재흥,박경훈,박상욱,김유인,김윤홍,정준모,임인칠 대한전자공학회 1991 대한전자공학회 학술대회 Vol.1991 No.1

BiCMOS 회로의Stuck-Open 고장과 Stuck-On 고장 검출을 위한 테스트 패턴 생성

신재흥,임인칠 대한전자공학회 1997 電子工學會論文誌, C Vol.c34 No.1

A BiCMOS circuit consists of the CMOS part which performs the logic function, and the bipolar part which drives output load. In BiCMOS circuits, transistor stuck-open faults exhibit delay faults in addition to sequential beavior. Also, stuck-on faults enhanced IDDQ (quiscent power supply current) at steady state. In this paper, a method is proposed which efficiently generates test patterns to detect stuck-open faults and stuck-on faults in BiCMOS circuits. The proposed method divides the BiCMOS circuit into pull-up part and pull-down part, and generates test patterns detect faults occured in each part by structural property of the BiCMOS circuit.

디지털 미디어 콘텐츠 방송 시스템 구현

申在興(Jae-Heung Shin),金弘烈(Hong-Ryul Kim),李相喆(Sang-Cheol Lee) 대한전기학회 2008 전기학회논문지 Vol.57 No.10

Most of digital media contents are composed with video and audio, picture and animation informations. Sometime, there is some deviation of information recognition quality for the video and audio information according to information receiver's characteristics or the understanding. But visual information using the text provide most clear and accurate ways for information recognition to human being. In this paper, we propose a new broadcasting system(BSDMC) to transmit clear and accurate meaning of the digital media contents. We implement general-purpose components to display the video, picture, text and symbol simultaneously. Only plug-in and call these components with proper parameters on the application developing tool, we can easily develop the multimedia contents broadcasting system. These components are implemented based on the object-oriented framework and modular structure so that increase the reusability and can be develop other applications quick and reliable.

홈 네트워크와 USN 신호 처리를 위한 u-QoS 지원 네트워크 모듈 개발

신재흥(Jae-Heung Shin) 대한전기학회 2011 전기학회논문지 P Vol.60 No.3

IPTV functions not only as media player that does play the broadcasting industry’s contents, also as the gateway is guaranteed of QoS(Quality of Service). This is for free contents-sharing that device stores contents using home network circumstance, and is for watching with seamless network service. Also this have required next QoS model that can handle stably as it may contain more data of the small computing device in next generation home system. We need ubiquitous-oriented QoS’s design and development project that focuses on internal and external media service, not the existing QoS nor one-sided QoS of media sevice industry. This paper focuses on network module development. This supports IPTV in media industry and two-way capability of QoS highlighting multimedia service in network industry. In additional, this can handle stably the multiplex signal of USN/RFID as the representative ubiquitous and home network that services high-speed wire and wireless interface, and support the seamless u-QoS.

실시간 영상정보 전송 및 영상저장 시스템 개발

신재흥(Jae-Heung Shin),윤홍(Hong Yoon),이상철(Sang-Chul Lee) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10

전국전인 초고속통신망이 구축되면서 인터넷을 통해 서비스되는 정보도 과거의 텍스트 기반의 서비스에서 정지영상, 동영상, 음성 등과 같은 멀티미디어 서비스가 주류를 이루고 있다. 웹캠이나 CCD 카메라로 촬영한 영상을 인터넷을 통해서 실시간으로 서비스할 수 있는 기술이 개발되면서 이를 이용하여 모니터링 서비스, 원격감시 시스템, 다자간 화상회의 시스템, 출입관리, 동영상을 스트리밍 서버를 이용한 서비스, 인터넷 방송 등 다양한 분야에서 사용되고 있다. 본 연구에서는 웹 캠나 CCD 카메라를 통해 획득한 영상 중 필요로 하는 부분을 저장하여 향후에 사용할 수 있도록 하는 시스템을 개발하는 것으로 동화상 캡처 드라이버와 인터페이스 처리 부분, 데이터 분석 처리 부분, 데이터 처리 부분을 C++ 프로그램을 사용하여 개발하였다.

빠른 채널 탐색을 고려한 Fast Handoff 방식의 성능분석

신재흥(Jae-Heung Shin),윤홍(Hong Yoon),이상철(Sang-Chul Lee) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10

무선통신 환경에서 단말의 이동에 의해 발생되는 끊김 현상을 제거하고, 지속적인 서비스를 제공하기 위해서는 빠른 핸드오프(Handoff) 방식이 필요하다. 본 논문에서는 모든 채널을 탐색한 후, 가장 상태가 좋은 채널을 선택하는 기존 방식을 개선한다. 각 AP(Access Point)가 현재 사용하고 있는 채널정보와 ACR(Access Control Router)가 제공하는 인접 AP들 정보의 주기적인 NEB-ADV에 포함하여 이동단말에 제공한다. 본 논문에서는 정보를 습득한 단말이 인접한 AP들의 사용 채널만 탐색하는 새로운 Fast Channel Detection (FCD)방식을 제안한다. 제안하는 방식은 기존방식과 비교하여 채널탐색 시간이 감소되므로 총 지연시간을 감소시킨다. 제안된 방식에 대한 시뮬레이션 모델을 통해서 링크 효율성과 블록킹 확률의 비교 · 분석을 통하여 제안방식의 우수성을 입증한다.