• IEMEK Journal of Embedded Systems and Applications
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• v.3 no.2
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• pp.49-56
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• 2008

This paper proposes a PC-based open architecture controller for a multi-axis robotic manipulator. The designed controller can be applied for various multi-axes robotic manipulators since the motion controller is implemented on a PC with its peripheral devices. The accuracy of the controller based on the computed torque method has been measured with the dynamic model of manipulator. Since the controller is implemented in the PC-based architecture, it is free from the user circumstances and the operating environment. Dynamics of the manipulator have been compensated by the feed forward path in the inner loop and the resulting linear outer loop has been controlled by PD algorithm. Using the specialized language, it can be more efficient in programming and in driving of the multi-axis robot. Unlike the conventional controller that is used to control only a specific robot, this controller can be easily changed for various types of robots. This paper proposes a PC-based controller that has a simple architecture with its simple interface circuits than general commercial controllers. The maintenance and the performance of the controller can be easily improved for a specific robot. In fact, using a Samsung multi-axis robot, AT1, the controller performance and convenience of the PC-based controller have been verified by comparing to the commercial one.

• The Journal of the Convergence on Culture Technology
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• v.4 no.3
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• pp.133-138
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• 2018

This study examines how Gosijo's sentiment flows into modern poem. Therefore, it has the purpose of utilizing the healing devices staying in the gap between Gosijo and Modern poem for literary therapy. Gosijo's extreme solitude and calm are invaded into modern poem, producing a sleepless night of solitude. The sentences with the emotions of Gosijo are different in modern poem, but the Gosijo and modern poem share the same emotions. These literary devices provide a sentiment of healing to modern people. This study will contribute to the activation of literary therapy in the future.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2005.11a
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• pp.452-455
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• 2005

In order to reproduce the traffic accident, It must save the data automatically which traffic accident 30 seconds before using black box. The Black Box can detect traffic crash accidents automatically, and record the vehicle's motion and driver's maneuvers during a pre-defined time Belied before and after the accident. But it is not easy for the police to catch running away criminal. Because, criminal can remove proof if it is 2 hours or 3 hours at least. Therefore, in this paper, in order to catch a hit and run driver in the traffic accident road, it developed an structured Query Language Server and made parts database algorithm.

• Journal of Korea Multimedia Society
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• v.8 no.12
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• pp.1649-1657
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• 2005

In this paper, a fast implementation of JPEG is discussed and its application to multimedia service is presented for mobile wireless internet. A fast JPEG player is developed based on several fast algorithms for mobile handset. In the color transformation, RCT is adopted instead of ICT for JPEG source. For the most time-consuming DCT part, the binDCT can reduce the decoding time. In upsampling and RGB conversion, the transformation from YCbCr to RGB 16 bit is made at one time. In some parts, assembly language is applied for high-speed. Also, an implementation of multimedia in mobile handset is described using MJPEG (Motion JPEG) and QCELP(Qualcomm Code Excited Linear Prediction Coding). MJPEG and QCELP are used for video and sound, which are synchronized in handset. For the play of MJPEG, the decoder is implemented as a S/W upon the MSM 5500 baseband chip using the fast JPEG decoder. For the play of QCELP, the embedded QCELP player in handset is used. The implemented multimedia player has a fast speed preserving the image quality.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.851-856
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• 2007

수화는 청각장애인이 주로 사용하는 시각적인 언어이다. OpenGL 기반의 가상현실 공간을 배경으로 하여 청각장애인들이 쉽게 이해할 수 있는 수화 아바타의 움직임을 구현하기 위해, 본 논문에서는 수화 동작 데이터베이스를 구축하는 그래픽 사용자 인터페이스를 개발한다. 개발한 시스템에서는 아바타의 사실적인 표현과 친근감을 강조하기 위해 3D MAX 기반의 인체 아바타 모델의 픽셀 값을 ASE를 사용하여 C언어 코드로 변환함으로써 인간과 거의 비슷한 모델을 생성하였다. 손 모양 편집프로그램은 슬라이드 바를 사용하여 21개의 손 관절 각도를 조정할 수 있으며, 손 모양 코드번호와 손 모양 이름을 지정하여 수화단어 편집프로그램에서 사용하는 손 모양 데이터 형식으로 저장할 수 있다. 수화단어 편집프로그램은 수화단어 데이터 형식의 값을 설정하는 기능과 함께 손 모양 대칭복사, 검색, 추가, 수정, 삭제 기능을 제공함으로써 사용자가 손 모양을 쉽게 편집할 수 있도록 하였다. 손 모양 편집프로그램과 수화단어 편집프로그램을 사용하여 구성한 데이터베이스를 기반으로 수화 아바타가 가상현실 공간에서 인간과 유사한 움직임을 표현할 수 있도록 하였다.

• Journal of the Society of Naval Architects of Korea
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• v.53 no.4
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• pp.307-314
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• 2016

Energy flow analysis(EFA) is a representative method that can predict the statistical energetics of structures at high frequencies. Generally, as the frequency increases, the shear distortion and rotatory inertia effects in the out-of-plane motion of beams or plates become important. Therefore, to predict the out-of-plane energetics of coupled structures in the high frequency range, the energy flow analyses of Timoshenko beam and Mindlin plate are required. Unlike the energy flow model of Kirchhoff plate, the energy flow model of Mindlin plate is composed of three kinds of energy governing equations(out-of-plane shear wave, bending dominant flexural wave, and shear dominant flexural wave). This paper performed the energy flow finite element analysis(EFFEA) of coplanar coupled Mindlin plates. For EFFEA of coplanar coupled Mindlin plates, the energy flow finite element formulation of out-of-plane energetics in the Mindlin plate was performed. The general EFFEA program was implemented by MATLAB® language. For the verification of EFFEA of Mindlin plate, the various numerical applications were done successfully.

• Transactions of the Korean Society of Mechanical Engineers
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• v.17 no.7 s.94
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• pp.1864-1873
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• 1993

A biomechanical approach was carried out to analyze foot-floor reaction forces acting on five male subjects performing a walking task. The task analyzed was walking over an obstacle with the right bare foot. The foot-floor reaction data were measured from a force plate, and then processed using a software developed. The source program was coded in the C language for easier on-line data acquisition and graphic displays. High repeatability was found in the reaction data acquired from three trials by each subject. For obstacle height from 0 to 25 cm, the maximum in reaction force reached up to 1.048 BW in the vertical, 0.174 BW in the anterior-posterior, and 0.054 BW in the medio-lateral components, respectively. A quantity was defined by the difference between two vertical reaction values, and this quantity was found to be proportional to the obstacle height. It was also shown that the whole body motion could be predicted the measured foot-floor reaction data.

• The Journal of the Korea Contents Association
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• v.13 no.1
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• pp.55-63
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• 2013

NUI(Natural User Interfaces) has been developed through CLI(Command Line Interfaces) and GUI(Graphical User Interfaces). NUI uses many different input modalities, including multi-touch, motion tracking, voice and stylus. In order to adopt NUI to legacy GUI applications, he/she must add device libraries, modify relevant source code and debug it. In this paper, we propose a gesture-based interface model that can be applied without modification of the existing event-based GUI applications and also present the XML schema for the specification of the model proposed. This paper shows a method of using the proposed model through a prototype.

• The Journal of the Korea institute of electronic communication sciences
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• v.4 no.2
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• pp.116-122
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• 2009

In this paper, we propose a new method which generates the trajectory of the mouth shape for the characters by the user inputs. It is based on the character at a basis syllable and can be suitable to the mouth shape generation. In this paper, we understand the principle of the Korean language creation and find the similarity for the form of the mouth shape and select it as a basic syllable. We also consider the articulation of this phoneme for it and create a new mouth shape trajectory and apply at face of an 3D avatar.

• Journal of Biomedical Engineering Research
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• v.20 no.1
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• pp.75-80
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• 1999

Since a Holter monitor records a patients' ECG when he is in motion, it can monitor complex heart disease effectively. But it can not handle a sudden heart disease because the diagnosis process will be done only after 24 hours. So in this study, a model of ambulatory monitoring system using wireless data communication network is proposed. And a mobile ECG equipment and a doctors' terminal are developed for the proposed system implementation. As a result, we can evaluate that the proposed ambulatory monitoring system is suitable for the management of ambulatory patients who may be at risk form sudden cardiac abnormalities.