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International Conference on Networked Computing and Advanced Information Management (NCM)

作者： Do-Hyung Kim Hwan-Gu Lee Won-Tae Kim Sun-Ja Kim Cheol-Hoon Lee Department of Computer Engineering System Software Laboratory Chungnam National University South Korea Convergence SW Research Division Electronics and Telecommunications Research Institute South Korea

This paper describes the design and implementation of embedded Linux based Mobile Broadcasting Service which supports personal broadcasting in wireless network environment. The Mobile Broadcasting Service makes possible for mobile user to make contents using his own terminal while he is moving or he is in a place, and send the created contents to server in real-time which has his blog Web page. All users connected to the his blog Web page can look and listen the contents in real-time. We verify the Mobile Broadcasting functions using MCC mobile terminal made by ETRI.

关键词： Broadcasting Servers Mobile communication Internet Web sites Information services Real time systems

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Design and Implementation of Embedded Linux Based Mobile Location-Awareness Service

Design and Implementation of Embedded Linux Based Mobile Loc...

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International Conference on Networked Computing and Advanced Information Management (NCM)

This paper describes the design and implementation of mobile location-awareness service based on embedded Linux. In mobile location-awareness, the picture and GPS information at mobile terminal are stored on server through wireless network. With the mobile location-awareness, user can easily identify the location where the picture was taken on through Yahoo map. The implemented mobile location-awareness also helps user to manage pictures according to the location where they were taken and visit that place again. We verified functions of mobile location-awareness using MCC mobile terminal made by ETRI.

关键词： Mobile communication Servers Global positioning system Linux Mobile computing Acceleration Catalogs

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Design and Implementation of Smartphone Edition based on Embedded Linux

Design and Implementation of Smartphone Edition based on Emb...

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International Conference on Advanced Communication Technology (ICACT)

作者： Do-Hyung Kim Min-Hong Yun Sun-Ja Kim Cheol-Hoon Lee Embedded S/W Research Division Electronics and Telecommunications Research Institute South Korea Department of Computer Engineering System Software Laboratory Chungnam National University South Korea

The paper describes the design and implementation of Qplus Smartphone Edition based on embedded Linux. Existing Smartphone platforms entailed royalty expenses and had customization difficulties due to the closure of their source codes. The Qplus Smartphone Edition requires no royalty because it is based on the embedded Linux. And, it supports key navigation functionality such as moving between folders or running applications with key-only operations. It also provides more user friendly environment through screen interfaces and indicators similar to those of the cellular phones.

关键词： Linux Application software Kernel Graphics Libraries Cellular phones Databases Navigation software architecture Telephony

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Robust watermark detection against D-A/A-D conversion for digital cinema using local auto-correlation function

Robust watermark detection against D-A/A-D conversion for di...

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IEEE International Conference on Image Processing

作者： Min-Jeong Lee Kyung-Su Kim Hae-Yeoun Lee Tae-Woo Oh Young-Ho Suh Heung-Kyu Lee Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology South Korea School of Computer and Software Engineering Kumoh National Institute of Technology South Korea Digital Content Research Division Electronics and Telecommnications Research Institute South Korea

In this paper, we propose a blind watermark detection scheme for digital cinema which is robust against D-A/A-D conversion attack. D-A/A-D conversion attack commonly happens during capturing cinema with a camera and is composed of various geometrical distortions as well as signal processing distortions. In many video applications, geometric distortions have been compensated by utilizing auto-correlation function (ACF). Since the ACF cannot resist projective transform but affine transform, we present a robust watermark detection scheme utilizing local auto-correlation function (LACF) with a mathematical model. Also, we suggest a way to design watermark pattern to improve performance of the LACF. We demonstrate robustness of the presented scheme against D-A/A- D conversion attacks for digital cinema as well as common video processing attacks.

关键词： Robustness Watermarking Motion pictures Autocorrelation Distortion Image restoration Payloads Cameras Video signal processing Resists

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U-healthcare System using Smart Headband

U-healthcare System using Smart Headband

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Sang Hyun Kim Dong Wan Ryoo Changseok Bae The Department of Computer Software and Engineering Korea University of Science and Technology South Korea The Department of Post-PC Research Group Digital Home Research Division Electronics and Telecommunications Research Institute South Korea

The wearable healthcare system should be not only small and easy for users to wear them but accurate in measuring physiological signals in daily life without any inconvenience. To meet these requirements, we propose the U-healthcare System which consists of a Smart Headband and a Health-state Monitor program. It can monitor the health-state in walking and running. The Smart Headband measures a photo-plethysmography (PPG) signal at the forehead for monitoring the heart rate and acceleration signals. The Health-state Monitor program is developed to show the health-state. Health-state Monitor program is operated in the handheld computer, such like (Ultra Mobile Personal computer (UMPC). It provides the user PPG, heart rate and steps for the precise measurement, Adaptive Noise Cancellation (ANC) is introduced. The Smart Headband and the Health-state Monitor program are communicated by the WPAN using Zigbee protocol. If the heart rate is higher or lower than usual, the Health-state Monitor program sends the SMS message to the designated person, such as family or the attending physician in the medical center, to inform the emergency situation.

关键词： Biomedical monitoring Heart rate Monitoring Legged locomotion Distortion Acceleration Forehead

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Algebraic Criteria for Consensus Problems of Discrete-Time Networked Systems

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IFAC Proceedings Volumes 2008年第2期41卷 1502-1509页

作者： Zonggang Li Yingmin Jia Junping Du Fashan Yu The Seventh Research Division Beihang University Beijing 100083 China Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 China School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo 454000 Henan China

This paper is mainly devoted to the algebraic criteria for consensus problems of discrete-time networked systems with the fixed and switching topology. A special eigenvector ω of the Laplacian matrix is first correlated with the connectivity of a digraph, and then the relations between a class of Laplacian-type matrix and the stochastic matrix are established. Based on these tools, some necessary and/or sufficient algebraic conditions are proposed, which can directly determine whether the consensus problem can be solved or not. Furthermore, it is proved that only the agents corresponding to the positive elements of ω contribute to the group decision value and decide the collective behavior of the system. Particularly for the fixed topology case, it is shown that not only the role of each agent is exactly proportional to the value of the corresponding element of ω but also the group decision value can be calculated by such a vector and the initial states of all agents.

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Fast Iterative Learning Control for Delay Systems: A Predictive Approach

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IFAC Proceedings Volumes 2008年第2期41卷 13474-13479页

作者： Deyuan Meng Yingmin Jia Junping Du Shiying Yuan The Seventh Research Division Beihang University Beijing 100083 China Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 China School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo 454000 Henan China

In a previous paper (Li et al. (2005)), an iterative learning control (ILC) law, proposed for linear continuous systems with a single time delay, has the ability to drive the output tracking error to zero only after one learning iteration. The convergence result is quite attractive; however, it requires unavailable system state. The aim of this paper is to provide a predictive approach to not only reach this result, but also extend it to linear continuous systems with multiple time delays. To this end, that unavailable system state is predicted and its corresponding equivalent form is obtained, based on which new ILC laws with fully available information are determined, ensuring the zero output tracking only after one learning iteration. The numerical simulation shows that this kind of ILC design is available, and furthermore the extension of the results from systems with a single time delay to those with multiple time delays is feasible.

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Fuzzy structural algorithms to identify and characterize apnea and hypopnea episodes

Fuzzy structural algorithms to identify and characterize apn...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Abraham Otero Paulo Felix Miguel R. Alvarez Carlos Zamarron Department of Software and Knowledge Engineering University San Pablo CEU Madrid Spain Department of Electronics and Computer Science University of Santiago de Compostela Santiago de Compostela Spain Division of Respiratory Medicine University Hospital Complex of Santiago de Compostela Spain

We present a new automated method to identify apneas and hypopneas and to relate them to the drops in blood oxyhemoglobin saturation that they produce. The algorithm takes advantage of the fuzzy set theory for the representation and manipulation of the vagueness of the medical knowledge on which it is based. Its structural nature allows us to easily modify the morphological detection criteria, and to perform a detailed characterization of the identified events. Based on this proposal, a tool for screening polysomnographic records has been developed. The tool allows the physician to modify the morphological criteria that define apneas, hypopneas, and desaturations as well as to inspect the descriptors that make up their characterization. Using this tool we have analyzed five polysomnographic recordings obtaining an overall correct detection rate of 95%. The false negative rate was 6.6% and the false positive rate was 4.3%.

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Development and control of dolphin-like underwater vehicle

Development and control of dolphin-like underwater vehicle

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American Control Conference (ACC)

作者： Yonghui Hu Long Wang Junzhi Yu Jiyan Huo Yingmin Jia Languages Informatics Systems and Software Engineering Department Faculty of Computer Science Peking University Beijing China Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China Seventh Research Division Beihang University Beijing China

This paper is concerned with prototype development and motion control of a dolphin-like underwater robot. The propulsion and maneuvering of the robotic dolphin are realized with the flapping motion of the mechanical flippers and the combined heaving and pitching motions of the fluke. Mechanical design and control of the flipper apparatus and the flexible tail mechanism are presented. Through coordinated control of the propulsors, several swimming movements are designed. Preliminary experimental results verify the effectiveness of the proposed design scheme.

关键词： Underwater vehicles Dolphins Robot kinematics Propulsion Marine animals Motion control Tail Robot sensing systems Control systems Automotive engineering

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Algebraic Criteria for Consensus Problem of Networked Systems with Continuous-time Dynamics

Algebraic Criteria for Consensus Problem of Networked System...

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2008 American Control Conference (ACC), vol.10

作者： Zonggang Li Yingmin Jia Junping Du Fashan Yu Seventh Research Division Beihang University Beijing China Beijing Key Laboratory of Intelligent Telecommunications Software and MultimeTechnologydia School of Computer Science and Beijing University of Posts and Telecommunications Beijing China School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo Henan China

This paper addresses algebraic criteria for consensus problem of continuous-time networked systems, in which both fixed and switching topology cases are considered. A special eigenvector omega of Laplacian matrix is first constructed and correlated with the connectivity of digraph. And then, based on this tool, some necessary and/or sufficient algebraic conditions are proposed, which can directly determine whether the consensus problem can be solved or not. Furthermore, it is clearly shown that only the agents corresponding to the positive elements of omega contribute to the group decision value and decide the collective behavior of all agents. Particularly for the fixed topology case, not only the role of each agent is exactly measured by the value of the corresponding element of omega but also the group decision value can be calculated by such a vector and the initial states of all agents.

关键词： Control systems Laplace equations Vehicle dynamics Network topology Particle measurements Mobile robots Centralized control Laboratories computer science Automation

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