• Title/Summary/Keyword: Service Contents

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An Analysis of Microsoft DRM and Prospects for ETRI DRM System (Microsoft의 디지털 저작권 보호 기술 분석 및 향후 시스템 개발 요소)

  • Park, Joo-Sang;Yoon, Ki-Song;Park, Chang-Soon
    • Proceedings of the Korea Information Processing Society Conference
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    • 2002.11c
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    • pp.2411-2414
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    • 2002
  • Digital Rights Management System은 컨텐트의 생성, 등록, 유통, 사용 등 전 과정에 걸쳐 작용하는, 디지털 컨텐트의 저작권을 보호 시스템이다. 이를 지원하기 위하여는 많은 요소가 필요하지만, 기본적으로 '컨텐트 암호화, 유통, 라이센스 발급, 사용'이라는 절차를 따른다. 본 논문은 여러 가지 DRM System중에서 Microsoft DRM System을 분석하고, ETRI DRM System의 보완점을 살펴본다.

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Image Contents Encryption Technique for Digital Hologram Broadcasting Service (디지털 홀로그램 방송을 위한 영상 콘텐츠의 암호화)

  • Ha, Jun;Choi, Hyun-Jun
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.818-819
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    • 2013
  • This paper propose a contents security technique for digital holographic display service. Digital holographic video system assumes the existing service frame for 2-dimensional or 3-dimensional video, which includes data acquisition, processing, transmission, reception, and reconstruction. In this paper, we perform the encryption of RGB image and depth-map for such a system. The experimental results showed that encrypting only 0.048% of the entire data was enough to hide the constants of the RGB image and depth-map.

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The Changes of Chlorophyll and Glycoalkaloid Contents in Potato Tubers after Exposure of Fluorescent and UV Light (광선의 영향에 따른 감자의 Chlorophyll과 Glycoalkaloid의 함량 변화)

  • Kim Joung-Ae;Nobuyuki Kozukue;Han Jae-Sook
    • Journal of the East Asian Society of Dietary Life
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    • v.15 no.2
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    • pp.207-212
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    • 2005
  • To determine changes of chlorophyll and potato glycoalkaloid(PGA) contents in potato tubers after lightening, Dejima potatoes cultivated in Korea were used and PGA was analyzed by HPLC. Potatoes were stored under fluorescent and UV light exposure or darkness for 7 days at $5^{\circ}C$. The contents of chlorophyll and glycoalkaloid in the peel of potatoes exposed to fluorescent light were increased to $84\%,\;69.5\%$ respectively compared to potatoes stored without lightening. While a marked effect of lightening on the peel of potatoes exposed to fluorescent light, UV light lead to no change of chlorophyll and less increase in glycoalkaloid than fluorescent did. The increase of chlorophyll was provoked by only fluorescent light. Cortex part did not accumulate any chlorophyll or glycoalkaloid.

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A Study on the Impact of Quality Factors on the Easy of use and Usefulness of Mobile Games (사용자의 사용용이성 및 유용성에 영향을 미치는 모바일 게임 콘텐츠 품질요인에 관한 연구)

  • Han, Hui-Seon;Lee, Jae-Gwon
    • Journal of Digital Convergence
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    • v.4 no.2
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    • pp.87-96
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    • 2006
  • This study first tries to investigate factors that determine the quality of mobile game contents. Based on the information and information system-related studies, our research proposes to show the relationships among the quality of mobile game contents, the level of perceived easy of use and the perceived usefulness. Mobile game contents service providers can get insight on factors that should be considered to improve the quality of contents services. Also, the research findings provide a clue on the success of mobile game service.

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