• 제목/요약/키워드: MOS Test

검색결과 114건 처리시간 0.025초

고 Testability를 위한 Domino CMOS회로의 설계 (On Designing Domino CMOS Circuits for High Testability)

  • 이재민;강성모
    • 한국통신학회논문지
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    • 제19권3호
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    • pp.401-417
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    • 1994
  • 본 논문에서는 논리 모니터링 방식에 의해 stuck-at(s-at)고장, stuck-open(s-op)고장 및 stuck on(s-on) 고장을 검출하기 위한 Domino CMOS회로의 테스트용이화 셀계기법을 제안한다. Domino CMOS게이트내 nMOS트랜지스터들의 s-op고장과 s-on고장을 검출하기 위하여 한개의 pMOS 트랜지스터를 부가하고 단일 게이트 및 다단 Domino CMOS회로내 인버어터의 pMOS트랜지스터 s-on 고장을 검출하기 위해서 한개의 nMOS트랜지스터를 부가한가. 부가된 트랜지스터는 Domino CMOS를 테스트 모드에서 pseudo nMOS회로로 동작하도록 만든다. 따라서 일반 domino CMOS회로의 테스트 시 회로지연에 의한 오동작을 방지하는 선충전(precharge phase)과 논리결정(evaluation phase)의 이상(two-phase)동작을 필요로 하지 않아 테스트 시간과 테스트 생성의 복잡도를 줄일 수 있게 된다. 제안된 회로에서는 대부분의 고장들이 단일 테스트 패턴에 의해 검출되는데 이에따라 경로지연이나 타임스큐, 전하재분배 및 그리치 등에 의해 테스트가 무효화되는 것을 피할 수 있으며 테스트 패턴 생성을 위하여 기존의 자동 테스트패턴생성기(ATPG)를 이용할 수 있는 장점을 갖는다.

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npn MOS 영상소자의 블루밍억제에 관한 연구 (Blooming Suppression of an npn MOS Image Sensor)

  • 갑형철;민홍식;이종덕
    • 대한전자공학회논문지
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    • 제25권4호
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    • pp.417-421
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    • 1988
  • In order to analyze the blooming suppression mechanism of a MOS image sensor, test photodiodes have been fabricated and characterized by attaching a source follower circuit. The blooming suppression ability of npn structure compared to that of np structure is quantitatively analyzed and measured by experiment. The dependency of the blooming current on the substrate voltage, the vertical MOS gate voltage and the video voltage is measured and the optimum condition for blooming suppression is presented.

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Oligosaccharides Affect Performance and Gut Development of Broiler Chickens

  • Ao, Z.;Choct, M.
    • Asian-Australasian Journal of Animal Sciences
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    • 제26권1호
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    • pp.116-121
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    • 2013
  • The effects of oligosaccharide supplementation on the growth performance, flock uniformity and GIT development of broiler chickens were investigated. Four diets, one negative control, one positive control supplemented with zinc-bacitracin, and two test diets supplemented with mannoligosaccharide (MOS) and fructooligosaccharide (FOS), were used for the experiment. Birds given MOS or FOS had improved body weight (BW) and feed efficiency (FCR), compared to those fed the negative control diet during the 35-d trial period. The effect on FCR became less apparent when the birds got older. FOS and MOS supplementation reduced the pancreas weight as a percentage of BW, with an effect similar to that of the antibiotic, at 35 d of age. Birds given MOS tended to have a heavier bursa (p = 0.164) and lower spleen/bursa weight ratio (p = 0.102) at 35 d of age. MOS and Zn-bacitracin showed a clear improvement on flock uniformity, compared to FOS. The mortality rate was not affected by FOS or MOS.

HMM 기반의 한국어 합성음에 대한 PESQ 및 MOS 평가의 상관도 분석 (Correlation Analysis of PESQ and MOS Evaluation for HMM-based Synthetic Korean Speech)

  • 임창송;배건성
    • 말소리와 음성과학
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    • 제2권1호
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    • pp.71-75
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    • 2010
  • The PESQ is an objective speech quality evaluation measure that is known to have a high correlation with a subjective speech quality measure such as MOS. To examine whether it could be useful as an objective quality measure of synthetic speech, we carried out both subjective evaluation tests with MOS and DMOS and an objective evaluation test with PESQ for HMM-based Korean synthetic speech signals and analyzed the correlation between them. Experimental results have shown that the PESQ has correlations of 0.87 with MOS and 0.92 with DMOS. It means that the PESQ holds much promise for evaluating the quality of synthetic Korean speech.

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기상청 MOS 예측값 적용을 통한 풍력 발전량 예측 타당성 연구 (Feasibility Study on Wind Power Forecasting Using MOS Forecasting Result of KMA)

  • 김경보;박윤호;박정근;고경남;허종철
    • 한국태양에너지학회 논문집
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    • 제30권2호
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    • pp.46-53
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    • 2010
  • In this paper the feasibility of wind power forecasting from MOS(Model Output Statistics) was evaluated at Gosan area in Jeju during February to Octoberin 2008. The observed wind data from wind turbine was compared with 24 hours and 48 hours forecasting wind data from MOS predicting. Coefficient of determination of measured wind speed from wind turbine and 24 hours forecasting from MOS was around 0.53 and 48 hours was around 0.30. These determination factors were increased to 0.65 from 0.53 and 0.35 from 0.30, respectively, when it comes to the prevailing wind direction($300^{\circ}\sim60^{\circ}$). Wind power forecasting ratio in 24 hours of MOS showed a value of 0.81 within 70% confidence interval and it also showed 0.65 in 80% confidence interval. It is suggested that the additional study of weather conditions be carried out when large error happened in MOS forecasting.

표면 전기 특성 측정을 위한 MOS 트랜지스터 탐침 개발 (MOS transistor probe for surface electric properties)

  • 이상훈;서재완;임근배;신현정;문원규
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2008년도 추계학술대회A
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    • pp.1963-1966
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    • 2008
  • We fabricate and evaluate the metal-oxide-semiconductor (MOS) transistor probe with the focused-ionbeam (FIB) for surface electric properties. The probes are designed with the rectangular and V-shaped structures, and their dimensions are determined considering the contact mode operation. The conductive nano tip is grown with FIB system, and deposition condition is controlled for the sharp tip. The fabricated device is applied to the various test patterns like the metal lines and PZT poling regions, and the results show the well defined measurement patterns.

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Buried Channel MOS 구조를 이용한 표면생성속도 측정 방법 (A Surface Generation Velocity Measurement Technique Using the Buried Channel MOS Structure)

  • 조성호;허연철;이종덕
    • 전자공학회논문지A
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    • 제29A권7호
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    • pp.56-63
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    • 1992
  • A measurement technique of the surface generation velocity S$_o$ using the BC(buried channel) MOS structure with shallow and low doped channel layer (BC MOS S$_o$ measurement technique) is presented and verified analytically and experimentally. Using this measurement technique, S$_o$ can be measured more accurately than that measured using the gate-controlled diode SS1oT measurement technique. When S$_o$ is measured for the two techniques from a BC MOS structure test patten with gate length of 171$\mu$m, the results are 0,66cm/sec and 0.28cm/sec for the former and the latter respectively.

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Linbits 특성을 이용하여 MP3 비트스트림에 부가적인 정보를 삽입하는 방법에 관한 연구 (Additive Data Insertion into MP3 Bitstream Using linbits Characteristics)

  • 김도형;양승진;정재호
    • 한국음향학회지
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    • 제22권7호
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    • pp.612-621
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    • 2003
  • MP3의 사용이 늘어나면서 저작권 보호나 음악 콘텐츠 정보의 삽입을 위한 방법에 대한 요구가 증가하고 있으며 관련된 연구가 활발히 진행 중에 있다. 이때 부가적인 정보가 삽입되어도 MP3의 비트스트림 구조가 크게 변형되어 음질의 열화나 파일 크기의 변화가 발생하여서는 안 된다. 본 연구에서는 위의 조건을 만족할 수 있도록 MP3 부호화 과정 중에서 양자화 된 정수 형태의 계수가 허프만 부호화 될 때, 값이 큰 샘플들의 특징을 이용하여 linbits 중 몇 개의 비트를 변형하여 부가적인 정보를 삽입하고, 그 음질의 열화 정도를 테스트하였다. 일련의 실험 과정을 통하여 평균 60 bytes/sec의 정보 삽입률에서 MOS 4.6 정도의 음질을 얻을 수 있음을 확인하였다. 제안된 방법을 이용하면 저작권에 대한 정보 또는 미디어 자체에 대한 정보들을 효과적으로 삽입할 수 있어 음악 데이터베이스의 운용과 같은 다양한 분야에 적용될 수 있다.

Change in Cell Size and Buoyant Density of Pseudomonas diminuta in Response to Osmotic Shocks

  • Lee, So-Hee;Cho, Yu-Ree;Choi, Yong-Jin;Kim, Chan-Wha
    • Journal of Microbiology and Biotechnology
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    • 제11권2호
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    • pp.326-328
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    • 2001
  • Pseudomonas diminuta (ATCC 19146) has been typically used in the bacterial challenge test for validation of the sterilizing filtration process. Cell size is critical for determining the retention characteristics of membrane filters with pore-size of $0.2{\mu}m$. The changes of cell sizes after osmotic shocks at 150, 260, 500, and 700 mosM were measured by a particle size analyzer and the changes of their buoyant densities were analyzed with a Percoll gradient. The results indicated that there were no significant differences when cells were cultured in 260 mosM medium and osmotically shocked at 500 and 700 mosM. However, the osmotically shocked cells at 150 mosM showed a 38% increase of the cell size compared to the cells at 260 mosM. From these study, we concluded that the worst case condition for validation of a sterilizing filter would be 500 mosM, not because of changes in the cell size, but due to decrease in cell viability under those conditions.

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SECSPICE : Submicron MOS 설계를 위한 정확하고 효율적인 회로 시뮬레이터 (SECSPICE : An Accurate and Efficient Circuit Simulator for Submicron MOS Designs)

  • 김영길;이재훈;박진규;김경화;김경호
    • 전자공학회논문지A
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    • 제31A권9호
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    • pp.156-163
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    • 1994
  • A new circuit simulator for submicron MOS desings was developed by enhancing SPICE3. The minimum conductance stepping, source stepping and pseudo transient methods are applied to improve the convergence. and SECSPICE uses the variation rate of the node volgage in the timestep algorithm. The modified BSIM model was implemented in SECSPICE for submicron MOS designs. And it gives the powerful user environments such as graphic user environments. As the results of test using real measured device data and circuits used in real production desing, we found it gave more accurage results than BSIM and the execution speed was 1.5~2.8 times faster than SPICE3.

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