• Journal of Digital Convergence
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• v.6 no.4
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• pp.137-145
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• 2008

Embedded industry has emerged as one of the important industry for u-IT based application service. Technology development related to embedded hardware and software provides the base for the development of U-IT convergence industry. This study intends to suggest a research model to investigate the influence of industry, organization, technology factors on technology performance in the embedded companies. This study adopted research variables such as global network, local network, industry intensity, and technology capability as independent variables, with technology performance as a dependent variable from the existing literatures. The purpose of this study is to analyze the influence of industrial and organizational factors on technology performance of embedded companies SCM systems, including the moderating effect of government support. 94 companies data were collected by survey. The result of this empirical study is summarized as follows. First, local network and technology capability are the important determinants to influence technology performance of embedded companies in direct effect model. Second, global network and industry intensity has more positive influence on technology performance of embedded companies through a moderating variable of government support.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2116-2120
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• 2003

A frame buffer device is an abstraction for the graphic hardware. It allows application software to access the graphic hardware through a well-defined interface, so that the software doesn’t need to know anything about the low-level interface stuff. We develop a frame buffer driver for VIA’s CLE266 graphic system based on ‘Qplus’, an embedded linux operating system developed by ETRI. Then, it will be seen that our frame buffer system is applied to embedded solutions such as movie player and X server successfully.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2004.04b
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• pp.150-152
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• 2004

The number of layers in rigid PCB(printed circuit board) is restricted, so the number of components can be embedded in module is restricted also. But using flexible multilayer PCB, the layers over than 7 can be evaluated. In this study, to verify the possibility of application of flexible multilayer PCB to RF modules, multilayered embedded capacitor is fabricated and analyzed. The characteristics of embedded capacitor is analyzed and compared to that of MLCC and LTCC capacitor. Embedded capacitor has better electrical features than MLCC and compatible one to LTCC capacitor.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2005.11a
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• pp.39-44
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• 2005

In recent years, embedded systems have become so complex and the development time to market is required to be shorter than before. As embedded systems include more functions for new services, embedded software gradually grow in size, and development costs and time are increasing. In order to overcome this serious matter, we need a customized design and test technique for embedded software. In this paper, we present a software architecture style for embedded software. It facilitates the composition of reusable functions and helps developers to reduce development time. Because the costs associated with revealing errors of embedded software in applications are rising. we propose a test method and tools for target environments.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05a
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• pp.47-50
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• 2003

최근 IT분야에서 주목받고 있는 부분은 정보가전분야이다. 특히, 홈오토메이션(HA Home Automation)에서 중심이 되는 시스템은 홈서버라 할 수 있다. 즉, 가정내에 홈서버가 설치되어 이를 중심으로 내부적으로는 정보가전기기들이 네트워킹되어 있고, 밖으로는 인터넷을 기본 통신 환경으로 구성되는 것이 현실이다. 이러한 환경에서 홈시큐리티 방면의 영상감시기능은 핵심분야 중 하나이다. 영상감시기능을 수행하고자 가정의 홈서버상에 영상감시 모듈이 탑재되어진다. 이때, 홈서버는 임베디드 시스템으로 Qplus라고 하는 임베디드 리눅스 계열의 운영체제를 기본으로 하며, 영상감시 모듈은 SIP(Session Initiation Protocol)기반으로 수행된다. SIP은 VoIP(Voice over IP) 분야의 핵심기술로 최근 많이 부각되어 널리 활용되고 있는 응용 계층의 시그널링 프로토콜이다. 한편, 영상코덱은 ITU-T의 H.261표준을 따르고 있으며, 이러한 영상감시기능은 홈서버 뿐만 아니라, PDA와 같은 핸드헬드 장치를 통해서도 제공된다. 본 논문에서는 임베디드 영상가미 시스템의 설계 및 구현에 대해 기술하고 있다.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.1655-1658
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• 2004

In this paper, we design and implement remote servo motor control system with real-time micro embedded operating system. The system, where controller and camera image grabber are mounted, handles control commands transmitted from a remote PC web browser. A hard real-time servo motor driver running on the real-time micro embedded OS and then a digital control application which confirms precise sampling time intervals is constructed. Frame grabber images transmitted from camera are saved in a image data format to view on remote PC web browser.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.17 no.2
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• pp.110-113
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• 2008

Embedded capacitor technology is one of the effective packing technologies for further miniaturization and higher performance of electric packaging system. In this paper, the embedded capacitors were simulated and fabricated in 8-layered printed circuit board employing standard PCB processes. The composites of barium titanante($BaTiO_3$) powder and epoxy resin were employed for the dielectric materials in embedded capacitors. Theoretical considerations regarding the embedded capacitors have been paid to understand the frequency dependent impedance behavior. Frequency dependent impedance of simulated and fabricated embedded capacitors was investigated. Fabricated embedded capacitors have lower self resonance frequency values than that of the simulated embedded capacitors due to the increased parasitic inductance values. Frequency dependent capacitances of fabricated embedded capacitors were well matched with those of simulated embedded capacitors from the 100MHz to 10GHz range. Quality factor of 20 was observed and simulated at 2GHz range in the 10 pF embedded capacitors. Temperature dependent capacitance of fabricated embedded capacitors was presented.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1840-1845
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• 2005

The SoC and digital technology development recently enabled the emergence of information devices and control devices because the SoC present many advantages such as lower power consumption, greater reliability, and lower cost. It is required to use an embedded operating system for building control systems. So far, the Real-Time operating system is widely used to implement a Real-Time system since it meets developer's requirements. However, Real-Time operating systems reveal a lack of standards, expensive development, and license costs. Embedded Linux is able to overcome these disadvantages. In this paper, the implementation of control system platform using Real-Time Embedded Linux is described. As a control system platform, we use XScale of a Soc and build Real-Time control platform using RTAI and Real-Time device driver. Finally, we address the feasibility study of the Real-Time Embedded Linux as a Real-Time operating system for mobile robots.

• Journal of Power Electronics
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• v.19 no.2
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• pp.602-611
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• 2019

The major drawbacks of magnetic resonant coupled wireless power transfer (WPT) to the embedded sensors on spindles are transmission instability and low efficiency of the transmission. This paper proposes a novel double-loop coil design for wirelessly charging embedded sensors. Theoretical and finite-element analyses show that the proposed coil has good transmission performance. In addition, the power transmission capability of the double-loop coil can be improved by reducing the radius difference and width difference of the transmitter and receiver. It has been demonstrated by analysis and practical experiments that a magnetic resonant coupled WPT system using the double-loop coil can provide a stable and efficient power transmission to embedded sensors.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.10a
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• pp.671-674
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• 2001

Q+P Esto는 정보가전용 RTOS인 Q+P를 위한 원격 개발 환경이다. 타겟에이전트는 타겟에서 실행되면서 호스트에 있는 디버거와 원격쉘, 그리고 자원모니터 같은 Q+P Esto 도구들이 원격 개발을 하는데 필요한 기본적인 기능들을 제공한다. 본 논문은 GNU gdb 5.0에 있는 gdbserver를 이용하여 타겟에서 실행 중인 응용 프로세스를 감시 및 제어하는 구조를 제안한다. 디버깅을 위하여 정지점(breakpoint)에 걸린 응용 프로세스를 continue 시켰을 때 응용 프로세스가 무한 루프에 빠지더라도 타겟에이전트는 다른 도구의 요청을 계속 처리할 수 있다. 응용 프로세스를 제어하는 자세한 메커니즘은 gdbserver가 담당한다. 따라서, 타겟에이전트는 단지 gdb remote protocol만 사용하여 gdbserver와 통신하면 되므로 구현이 용이하다.