• 한국자기학회지
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• 제6권1호
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• pp.7-14
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• 1996

고밀도화, 광대역화하는 자기기록계의 요구에따라 복합 MIG head를 개발하였다. Head 동특성 측정기와 ME tape를 사용하여 기록 및 재생 특성을 SD VCR 포맷에 대해 검토한 결과, 기록시 20 MHz에서 포화가 발생되지 않았고, 재생시 우수한 상대효율의 주파수 의존성과 접동 잡음특성이 확보됨으로서 C/N 특성의 개선을 도모할 수 있었고 또한 ME tape에 대한 우수한 compatibility는 SD VCR 용 head로서의 적용을 유력하게 하고 있다.

• 전자공학회논문지CI
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• 제40권6호
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• pp.1-8
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• 2003

Global carry propagation이 없는 redundant signed number에 의한 CORDIC 회로를 제안하였다. 이 number format은 Booth recording과 유사한 새로운 receding scheme을 가지고 가감산에서 carry 전파의 문제를 효과적으로 해결하였다. 여기서는 상수 scale factor를 갖고 삼각함수 계산을 하는 pipeline구조를 채택하였다. 이 CORDIC 회로의 동작시간은 채택한 operand bit에 상관없이 일정하다.

• 전자공학회논문지CI
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• 제40권6호
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• pp.32-38
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• 2003

인간 친화적인 10진 계산을 위한 3초과 십진 가·감산기 회로를 제안한다. 십진 회로를 이용한 계산 시속도 문제는 carry lookahead (CLA) 회로를 이용하여 해결할 수 있다. 제안하는 3초과 십진수 가산기 설계에서는 CLA와 함께 보정회로 및 변환회로를 개선함으로서 지연시간을 줄일 수 있다. 3초과 코드를 사용함으로서 감산과정에서 가산기만을 사용하여 계산을 할 수 있다 이 3초과 십진 가ㆍ감산회로는 기존의 설계에 비하여 상당한 속도 개선효과를 얻게 해준다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.837-842
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• 2007

Information storage devices using disks have a disk vibration at the frequency which is equivalent to the disk rotational speed. They also have a track vibration due to the disk eccentricity at the same frequency. In near field recording systems, the former affects the air-gap servo and the latter affects the tracking servo. In this paper, we introduce a novel control algorithm based on the internal model principle to both servos. A controller block designed by the principle is connected to the base lead-lag type compensator in parallel in order to cancel the repeatable run-out due to the disk vibration or eccentricity. Simulation and practical application of the algorithm on a near field recording system show good servo performance.

• Journal of information and communication convergence engineering
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• 제9권2호
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• pp.161-165
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• 2011

Recently, According to increasing interest to original sound Karaoke instrument, MIDI type karaoke manufacturer attempt to make more cheap method instead of original recoding method. Separating technique for singing voice from music accompaniment is very useful in such equipment. We propose a system to separate singing voice from music accompaniment for stereo recordings. Our system consists of three stages. The first stage is a spectral change detector. The second stage classifies an input into vocal and non vocal portions by using GMM classifier. The last stage is a selective frequency separation stage. The results of removed by listening test from the results for computer based extraction simulation, spectrogram results show separation task successfully. Listening test with extracted MR from proposed system show vocal separating and removal task successfully.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1992년도 춘계학술대회
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• pp.75-78
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• 1992

This paper describes research about the realization of a diagnosis system for the surgical operation of the acupuncture. The system consists of the Munjin, Bokjin and Makjin software. The Munjin system diagnoses the pain spots or each Kyoungnats of the hands, root and neck. The Bokjin system diagnoses pressure-pain spots of the twelve Kyoungnak at chest and abdomen by following the displayed positions on the monitor in sequentially. The Maekjin system diagnoses radial pulse or inyoung and chongu according to the Inyoung-Chongu comparison in ethod. Compound diagnosis verifies the results which obtained from each diagnosis routine by the interface rule. This developed system contains the database which for the paitents diagnosis and treatment process recoding.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1179-1182
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• 2005

To facilitate the cell based robot research, we presented a micro-mechanical force measurement system for the biological muscle actuators, which utilize glucose as a power source for potential application in a human body or blood vessels. The system is composed of a micro-manipulator, a force transducer with a glass probe, a signal processor, an inverted microscope and video recoding system. Using this measurement system, the contractile force and frequency of the cardiac myocytes were measured in real time and the magnitude of the contractile force of each cardiac myocyte on a different condition was compared. From the quantitative experimental results, we estimated that the force of cardiac myocytes is about $20{\sim}40\;{\mu}$N, and showed that there is difference between the control cells and the micro-patterned cells.

• 대한임베디드공학회논문지
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• 제10권3호
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• pp.165-170
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• 2015

SNOMED CT browser is a browsing tool for searching clinical terms in SNOMED CT which is a standard terminology set used worldwide. The search result view of previous browsers merely list up candidate terminologies. The problem is that most of users become confused about how to select an appropriate term from the list. This leads serious waste of medical recoding cost. This paper discusses characteristics of SNOMED CT dataset and proposes a novel design of enhanced result view by restructuring the results using relationships of SNOMED CT concepts. Using the proposed scheme, medical doctors or officers can select appropriate terms more efficiently and can reduce overall recording time.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.1159-1160
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• 2008

For safety railway vehicle movement, analysis and recoding of railway vehicle speed and driving information has written by law. nowadays, base in europe, these system is spread of various advanced country. In this paper, We implement an event recorder which record the driving and breaking information of running railway vehicle. For the event recorder, We designed the data structures with data analysis tools and a protocol between Event recorder and data analysis tool. The verification of Analysis tool was tested by to made data by Event Recorder's emulator and information of real railway driving recording.

• 전자공학회논문지B
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• 제31B권10호
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• pp.67-72
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• 1994

In this paper we suggest a 32 bit high speed parallel multiplier which plays an important role in digital signal processing. We employ a bit-pair recoding Booth algoritham that gurantees n/2 partial product terms, which uniformly handles the signed-operand case. While partial product terms are generated, a special method is suggested to reduce time delay by employing 1's complement instead of 2's complement. Later when partial products are added, the additional 1 bit's are packed in a single partial product term and added to in the parallel counter. Then 16 partial product terms are reduced to two summands by using successive parallel counters. Final multiplication value is obtained by a BLC adder. When this multiplier is simulated under 0.8$\mu$CMOS standard cell we obtain 30ns multiplier speed.