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잡음 내성이 큰 단일 출력 레벨 쉬프터를 이용한 500 V 하프브리지 컨버터용 구동 IC 설계
박현일,송기남,이용안,김형우,김기현,서길수,한석봉,Park, Hyun-Il,Song, Ki-Nam,Lee, Yong-An,Kim, Hyoung-Woo,Kim, Ki-Hyun,Seo, Kil-Soo,Han, Seok-Bung 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.8
In this paper, we designed driving IC for 500 V resonant half-bridge type power converter, In this single-ended level shifter, chip area and power dissipation was decreased by 50% and 23.5% each compared to the conventional dual-ended level shifter. Also, this newly designed circuit solved the biggest problem of conventional flip-flop type level shifter in which the power MOSFET were turned on simultaneously due to the large dv/dt noise. The proposed high side level shifter included switching noise protection circuit and schmmit trigger to minimize the effect of displacement current flowing through LDMOS of level shifter when power MOSFET is operating. The designing process was proved reasonable by conducting Spectre and PSpice simulation on this circuit using 1${\mu}m$ BCD process parameter.
권진근(Jin Geun Kwon),박헌(Heon Park),임동민(Dong Min Lim),한석봉(Seok Bung Han) 제어로봇시스템학회 2010 제어로봇시스템학회 합동학술대회 논문집 Vol.2010 No.6
본 논문에서는 스마트폰을 이용한 효율적인 원격 제어 시스템을 제안한다. 이 시스템은 데이터 통신을 통해 서버에 전달된 실내상태 및 영상을 스마트폰 어플리케이션으로 확인하여 가정기기를 제어하고 집 내부의 상황을 감시할 수 있다. 구현된 전체 시스템은 홈 서버, 태양광 패널을 통한 친환경 전력 생산, 정원등 야간 자동점등, 스마트폰, 터치스크린, 리모컨, RFID 현관출입시스템, ARS제어시스템, 모션디텍터 알고리즘을 통한 침입자 관리, 애완동물 관리 시스템 긴급 상황을 위한 SMS 알림 시스템, 집 구조물로 구성되어 있으며 기존의 원격 제어 시스템보다 향상된 기능을 확인하였다.
신태민,한석봉,김영일 慶尙大學校生産技術硏究所 1991 生産技術硏究所論文集 Vol.7 No.-
Korean speech signals can be divided into the phonemes such as consonant, vowel, and end-consonant according to the characteristic and structure its pronunciation. The experiment is carried out by dividing 975 isolated words into phonemes. The recognition rate of consonant, vowel, and end-consonant with DTW are 85.7(%), 80.0(%) and 93.1(%), respectively. The recognition rate of consonant, vowel, and end-consonant with HMM are 82.1(%), 77.7(%) and 86.9(%), respectively. It is shown the Korean speech signals are recognized in the same way minimum data and short processing time.
CMOS VLSI의 IDDQ 테스트세트 간략화에 관한 연구
김강철,송근호,한석봉 진주산업대학교 1996 論文集 Vol.35 No.-
This paper proposes a dynamic compaction algorithm which can detect intra-bridging faults for IDDQ testing in CMOS VLSI. X_gates which have X(don't care) values in the input of the gate may exist in the circuit after a test pattern in chosen. The compaction algorithm assigns the logic value 1 or 0 that can be applied to the primitive fault pattern to X in the X_gate, and it detects all detectable faults for a test pattern. The simulation results in the benchmark circuits show that the fault coverage of this dynamic compaction algorithm is much enhanced compared with the conventional static compaction algorithms, and the resulting test vector reduction is up to 30%.