• 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.

• Journal of Advanced Navigation Technology
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• v.16 no.5
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• pp.817-830
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• 2012

In rapid changes in communications and computing environment, due to the increasing variety of user requirements, and an effort to solve the fundamental problems with the current Internet, Future Internet researches actively have been performed at domestic and abroad. In this paper, we proposed the idea and basic concept of Plastic slice software mode about federation job control in study topic of future internet.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.2
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• pp.85-96
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• 2010

Satisfaction of computer internet user in Ubiquitous depends on characters which given from web site. In this paper, studying about characteristic of internet web site that influence internet user's satisfaction. Had a research by interviewing and e-mail for a month, at over the 20 ages person who has experience purchasing S/W from shopping mall in internet purchasing site. The research shows the main factor of the user's satisfaction are that communication business combine, information usability, interaction, personalization, mailing list, over the web site characteristics. Finally, this paper suggest that special features and studying limitation of the enterprise web transactions base on the result of the research.

• Review of Korean Society for Internet Information
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• v.4 no.3
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• pp.73-78
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• 2003

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.4
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• pp.127-135
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• 2010

A study on that LED in 36[W] class replaces broadcast illuminator to save energy and improve the quality of film because tungsten halogen illuminators are too hot and spending lots of electrical capacity at the time of camera shooting. And the following result was obtained .36[w] LED lighting fixture's illuminance is lower than 1[kw] halogen Light but object's illuminance became higher, and at the image be showed very bright and softly.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.2
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• pp.121-127
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• 2015

In this paper, we propose S/W framework for health care robot based on OSGI middleware. Most healthcare robot developed independently. Therefore most module duplicately developed. However It's not efficient. In this paper we propose S/W framework for healthcare robot that can provide common module for health care robot and can apply heterogeneous robot. By using this S/W framework, we can enhance reusability of s/w module and can provide flexible and efficient development environment.

• ETRI Journal
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• v.35 no.2
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• pp.253-258
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• 2013

We propose and demonstrate an efficient power-saving optical network unit (ONU) based on upstream traffic monitoring for 10-Gb/s wavelength division multiplexed passive optical networks (WDM-PONs). The power-saving mode controller uses a ${\mu}$-processor and traffic monitoring modules followed by the proposed power-saving processes to operate the sleep mode ONU. The power consumption of the ONU is effectively reduced from 19.3 W to 6.4 W when no traffic from the users is detected. In addition, we design a power-saving mechanism based on a cyclic sleep mode operation to allow a connectivity check between the optical line terminal and ONU. Our calculation results show that the WDM-PON ONU reduces the power consumption by around 60% using the proposed mechanism.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.3
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• pp.25-32
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• 2019

The core of the block chain technology is solving the problem of agreement on double payment, and the PoW, PoS and DPoS algorithms used for this have been studied. PoW in-process proofs are consensus systems that require feasible efforts to prevent minor or malicious use of computing capabilities, such as sending spam e-mail or initiating denial of service (DoS) attacks. The proof of the PoS is made to solve the Nothing at stake problem as well as the energy waste of the proof of work (PoW) algorithm, and the decision of the sum of each node is decided according to the amount of money, not the calculation ability. DPoS is that a small number of authorized users maintain a trade consensus through a distributed network, whereas DPS provides consent authority to a small number of representatives, whereas PoS has consent authority to all users. If PoS is direct democracy, DPoS is indirect democracy. This study aims to contribute to the continuous development of the related field through the study of the algorithm of the block chain agreement.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06a
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• pp.247-249
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• 2006

본 논문에서는 임베디드 리눅스와 그에 따른 통합 개발 환경인 QpusME/Esto에서 제공하는 전력소모량 분석도구를 이용하여 H.264 디코더의 함수별 전력 소모량을 측정하여 공개함으로써 향후 연구에 기반 정보로 사용하도록 한다. 또한 이를 이용하여 MacroBlock 디코딩시, 전력을 줄일 수 있는 다양한 방법 중 하나의 예를 제시하고 그 실험 결과를 제시한다.

• Journal of Fisheries and Marine Sciences Education
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• v.19 no.1
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• pp.29-38
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• 2007

Recent Internet Service Environment has been moved to provide geographic information based on location as well as existent various information. In this paper, we develop an integrated software connecting GIS information to Internet. In the other hand, in GIS S/W, it is important that rapid output of Digital Map and effective trnasmission of specified Digital Map about moving area. To achieve the purpose, we propose a reduced digital format to diminish original digital maps. Also, we develop a GIS-based software engine with functions connecting location information to URL as well as map viewer and map handling. Futhermore, our developed GIS S/W is based Module in LBS application using GPS sensor.