• Spatial Information Research
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• v.23 no.4
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• pp.13-22
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• 2015

There has been much interest in the VWorld open platform with the addition of a variety of contents or services such as 2D map, 3D terrain, 3D buildings, and thematic map since 2012. However, the VWorld system architecture was not stable for the system overload. For example, the system was stopped due to the rapidly increasing user accesses when the 3D terrain service of the North Korea and the Baekdu mountain was launched at September 2012 and September 2013, respectively. It was because the system architect has just extended the server system and the network bandwidth whenever the rapid increase of user accesses occurs or new service starts. Therefore, this study proposes a new VWorld system architecture that can reliably serve the huge volume of National Spatial Data by applying the new technologies such as CDN, visualization and clustering. Finally, it is expected that the results of this study can be used as a basis for the next VWorld system architecture being capable of a huge volume of spatial data and users.

• Journal of Advanced Navigation Technology
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• v.14 no.5
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• pp.737-744
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• 2010

A Social Network Service(SNS) is the best attracting internet business model and serviced in the several countries. The Facebook is the most popular SNS in a foreign country and the Cyworld is most popular one in Korea. In this paper, after investing and analyzing the existing Social Network Services, I present a new OpenU Social Network Service based on Web 2.0 concepts. This is a next generation internet platform which can be communicated with real-time chatting and share d data and talked during seeing data by collaboration functions OpenU's main characteristics and functions by screen design and implementations are explained. And also OpenU's excellence by comparing with other SNSs system is presented.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2018.11a
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• pp.49-52
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• 2018

KBS를 비롯한 지상파방송 3사는 실시간 UHD방송과 VOD 온라인 동영상 서비스가 결합된 세계 최초의 지상파 양방향 UHD 플랫폼인 Tiviva(이하 티비바) 서비스를 2017년 11월 오픈하였다. 티비바는 별도의 셋톱박스 없이 UHD TV에 직접수신 안테나와 인터넷을 연결하여 지상파 방송사의 실시간 방송 채널 외에 다양한 UHD VOD와 클립을 이용할 수 있고, 스포츠와 드라마, 종편(JTBC, MBN), 영화 등 50여 개의 IP채널을 추가로 볼 수 있는 서비스이다. 이후 2018년 1월에는 이용자 편리성과 자동추천 기능 등 UI/UX를 크게 개선한 티비바 2.0을 업데이트 하였고, 평창올림픽 기간에는 전 경기 실시간 스트리밍 및 올림픽특별관을 운영하였다. 2018년 6월 러시아 월드컵 기간에는 축구 경기 UHD HDR 방송 중계와 함께 티비바를 통한 HDR VOD를 최초로 서비스하여 스포츠 경기를 즐기는 또다른 즐거움을 선사하였다. 본 논문에서는 러시아 월드컵 HDR VOD 서비스를 준비하고 시행하기 위한 시스템 설계 및 진행과정, 기술 이슈 등에 대해서 기술하려고 한다.

• Digital Contents
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• no.11 s.138
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• pp.27-36
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• 2004

게임업계가 술렁이고 있다. 지난 8월 오픈베타 서비스를 시작하면서 온라인게임의 각종 신기록을 갈아 치웠던 CCR의‘RF온라인’이 유료 화를 단행, 그 성공여부가 초미의 관심사가 되고 있는 데다, 게임시장의 성수기와 발맞춰 월드오브워크래프트, 라스트 카오스, 아크로드 등 블록버스트급 온라인게임들이 대중의 손길을 기다리고 있기 때문이다. 수성이냐, 탈환이냐를 놓고 엔씨소프트의‘리니지 시리즈’, 웹젠의 ‘뮤’등 기존 강자와 후발주자간 치열하게 펼쳐질‘온라인게임 겨울대전’을 내다봤다.

• Journal of Korean Society for Geospatial Information Science
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• v.25 no.1
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• pp.55-61
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• 2017

The V-world, korean type spatial information open platform, provides various services to easily utilize 2D, 3D map and administrative information of the country. Among them, V-world 3D map service, modeled in individual building unit, require requests for each building model file and the draw calls for drawing models on the screen by the request. This causes a large number of model requests and draw calls to occur that increase the latency occurring during the transmission and conversion process between the central processing unit(CPU) and the graphic processing unit(GPU), which lead to the performance degradation of the 3D map service. In this paper, we propose a performance improvement plan to reduce the performance degradation of 3D map service caused by multiple model requests and draw calls. Therefore, we tried to reduce the number of requests and draw calls for the model file by applying a 3D tile model that combined multiple building models to single tile. In addition, we applied the quadtree algorithm to reduce the time required to load the model file by shortening the retrieval time of the model. This is expected to contribute to improving the performance of 3D map service of V-world.

• Journal of Korean Society for Geospatial Information Science
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• v.24 no.3
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• pp.19-27
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• 2016

Advance in Information and Communication Technology (ICT) is intensely influenced to increase importance of Software on global ICT industries. The trend of technological development has been transformed from hardware-oriented environment to software-oriented environment. This industrial transformation brought novel trend to Software market. Open Source Software (OSS) has been widely distributed for private uses. At the same time, many governmental offices are planning to expand the use of OSS. In this paper, we analyze the strength and weaknesses of OSSs for both Web and WAS servers based on 4 types of testing environments which are created by the combination of 5 selected OSSs. We anticipated to learn the optimal system architecture design for the next generation of V-World through this research.

• Spatial Information Research
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• v.22 no.4
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• pp.67-76
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• 2014

Recently, through the development of IT and mobile technology, spatial information plays a role of infrastructure of the people life and the national economy. Many kinds of applications including SNS and social commerce is to leverage the spatial information for their services. In the case of domestic, spatial open platform that can provide national spatial data infrastructure services in a stable manner has been released. And many people have been interested to the open platform services. However, the open platform currently has many difficulties to analyze its service status and load in real time, because it does not hold a real-time monitoring system. Therefore, we propose a method that can analyze the real-time service status of the open platform using the analysis of the web server log information. In particular, we propose the results of the analysis as follows: amount of data transferred, network bandwidth, number of visitors, hit count, contents usage, and connection path. We think the results presented in this study is insufficient to understand the perfect service status of the open platform. However, it is expected to be utilized as the basic data for understanding of the service status and for system expansion of the open platform, every year.

• Journal of Korean Society for Geospatial Information Science
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• v.23 no.3
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• pp.95-106
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• 2015

Unused land is a new load of building and a linear improvement, expanding the loss of function of the road abandoned road construction sites, as well as existing roads is possible additional advantage. However, some space is overcharge checkpoints, materials yard, make this vehicle utilization and maintenance of the unfavorable situation, as vehicle rest area but unused land most of the space required for the use of the system management plan. We are analyzed the location, topographical features, cultural property and in the space which is geospatail open platform set up to classify the type of unused land. Depending on the type of unused land using the geospatial open platform performs a 3D model and a proposed model development and application taking into account the environment and landscape. To derive the Gangwon development Plan and design of future route unused land was becoming helps you make better use of unused land.

• Journal of Korea Game Society
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• v.21 no.6
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• pp.63-74
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• 2021

Metaverse fits well with the lifestyle of MZ generation who carries smart-phones at all times and value their identity. This study proposes a planning model that develops Minhwa, traditional Korean culture and arts, into art galleries on Zepeto, a metaverse platform. To this end, the characteristics of the metaverse platform, open world, sandbox, creator economy, and avatar, are analyzed and developed into a planning to open a Minhwa museum on Zepeto. While reinterpreting traditional Korean art in a modern way, it is worth researching as a metaverse planning and development model suitable for the new-tro sensibility of the MZ generation.

• Digital Contents
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• no.8 s.135
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• pp.54-59
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• 2004

인터넷 포털 대전쟁이 시작됐다. 한국 통신시장을 사실상 양분하고 있는 KT와 SK텔레콤이 인터넷 포털 사업에 포문을 열고 시장재편을 위한 움직임을 본격화하면서다. KTH의‘파란’이 최근 공식 오픈하면서 포털 시장에 파란을 예고하고 있고, 미니홈피로 돌풍을 일으킨 싸이월드를 합병한 SK커뮤니케이션즈의 네이트닷컴은 업계 선두를 넘보고 있다. 여기에 최근 한발 물러서긴 했으나 영화.음악.게임 콘텐츠에서 막강한 지배력을 갖춘 CJ까지 가세해 벤처 텃밭이었던 포털 시장에 대기업을 등에 업은 공룡 등장을 알렸다. 하지만 터줏대감인 NHN.다음.야후코리아 등 전문 포털업체들도 쉽게 물러서지 않을 태세다. 이들 업체들은 검색, 커뮤니티, 메일 등 다양한 신규 서비스를 경쟁적으로 선보이며 전면전을 준비하고 있다. 이에 따라 하반기 포털 시장은 기존 인터넷 전문 포털들과 시장지배력을 갖춘 대기업 포털간의 피할 수 없는 진검승부가 예고되고 있다. 하반기 혈전이 예고되는 공룡기업과 벤처의 싸움이‘골리앗과 다윗’싸움이 될지,‘ 고래싸움에 새우등 터지는’격이 될지 주목된다.