• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.455-459
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• 2003

In the great motive power which promotes the Game of future to develop. three main factors focus on 3D Graphics, Network and Virtual Reality. the Network technique as necessary elemental technique in Next-generation on-line game is being researched largely. However, from viewing the features of on-line game, if many users meet in same server, it not only causes heavy load to the server and brings inconvenience to the users, but also increases expense to the service provider and creates a problem which is to put up server or not. A proposal is going to do hybrid distributed system a client hardly depends on server for this paper, and to be able to enjoy a network game through information alternating current between clients. depended on the existing server, and the most message processing did a design in order to achieve between clients. A design way to propose is as follows. Primarily it was done in order proposed a message grade anger process way, and to be able to manage server or a client according to importance of message, and, with the second, did a Client-Server method and a Pear-to-Pear method at the same time, and a chase did efficiency. Third is going to propose other problem solving way by message grade anger in multi-anger and a security section of a message cue.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2001.11b
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• pp.233-236
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• 2001

Due to the current limitation on network bandwidth, it is difficult to get the video files of interests from the server by downloading/streaming. To solve this problem, we propose a scheme for generating a virtual single video in the client side by downloading the selected video segments and the corresponding metadata from the server. Our system is based MPEG-7 standard on the multimedia metadata. The experimental system demonstrates the feasibility of our approach.

• Journal of Industrial Technology
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• v.28 no.B
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• pp.27-32
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• 2008

In this paper, we implement the taxi telematics service system based on location based service(LBS). The system implementation is composed of 3 major parts : the mobile device with which a user requests taxi calls, the taxi client which resides inside a taxi and supports multimedia environments with navigation function, and the server which manages moving taxies and receives user taxi calls. From the mobile device's GPS information, the server finds the closest taxi which is then sent to the user with the mobile device.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1994.10a
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• pp.801-805
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• 1994

멀티미디어(화상,음성,하이퍼텍스트)의 데이터는 다른 데이터와 상이점이 많아 운용에 어려움이 있다. 대용량의 저장용량(storage)의 필요, 데이터 통신의 어려움 등이 빠르게 발전하는 멀티미디어 기술에 제약조건이 된다. 본 연구에서는 멀티미디어 데이터가 일 반적인 텍스트(Text)데이터와 같이 높은 수행도(Performance) 및 안정적인 데이터베이스 (Database)로 구축되어 효율적으로 운용 되는데 중점을 둔다. 아울러 대량의 정보를 처리하기 위하여 서버(server)와 클라이언트(Client)기법을 이용한 분산처리로 실시간 처리 및 데이터 저장의 한계를 극복하고자 한다.

• Annual Conference of KIPS
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• 2016.04a
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• pp.997-998
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• 2016

최근 사물인터넷 서비스 활성화로 인해 다양한 사물인터넷 기술이 개발 중이다. 특히, 사물인터넷, 플랫폼, 시메틱, 네트워킹 기술 등은 여러 표준기구에서 독자적 표준기술로 개발이 진행 중이다. 이는 글로벌 서비스 인프라 역활을 수행해하는 사물인터넷 기능이 제 기능을 수행하지 못하는 요인이다. 최근 이런 문제를 해결하기 위해 각 표준기구에서는 각 기술간 상호운용성을 보장하기 위한 논의가 진행 중이며, 관련 기술을 개발 중이다. 본 논문에서는 다양한 상호운용성 기술 중 네트워크 측면에서 상호운용성 기술에 대한 문제를 정의하고 필요 기술을 제안한다.

• Journal of information and communication convergence engineering
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• v.3 no.2
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• pp.93-95
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• 2005

In order to create security session, security keys are preconfigured between communication objects. For this purpose, Handshake Protocol exists. The pre-master secret key that is used in this process needs to interpreted by a server to create master secret key, whose process requires a big calculation, resulting in deteriorating system's transmission performance. Therefore, it is helpful in increasing transmission speed to reuse secret keys rather than to create them at every connection.

• Journal of the Korea Computer Industry Society
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• v.5 no.9
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• pp.873-882
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• 2004

Multimedia database system can be improve data transferring efficiency by consulting catalogue database which is storing the object and serving multimedia meta-database and perform the pre-scheduling for data transferring and by delaying of transferring to reduce the responding timeand reordering the data by various method of transferring. By Introducing these techniques we can enhance the server resources utilizing, minimizing the users responding time and can decrease failure at the scheduling itself and easily search and transfer the information that the user wanted. Like this, the importance of multimedia information treating skill and efficient management are widely recognized and expected lots of research and development to form a butter efficient multimedia database syst

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.55 no.2
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• pp.72-74
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• 2006

In this paper, a wireless multimedia service interacting with key input of a phone number is Presented. In the conventional handset, when the key button is pressed, numbers are displayed or the embedded sound is played. Also, the contents are fixed and cannot be changed. In this paper, we propose a wireless multimedia service playing multimedia contents in accordance with the key input of a phone number. The contents can be downloaded from the wireless internet server. To implement this service, file format, fast codec and download structure are proposed. Using the presented structure, this service is being provided by a telecommunication company in Korea. Various applications based on this service are being expected.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2015.07a
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• pp.51-53
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• 2015

본 논문은 현재 서비스 시작 단계인 UHDTV 방송 서비스의 확산을 위해서 UHD 콘텐츠 제작 워크플로우에서 우선적으로 요구되는 UHD 콘텐츠의 실시간 획득, 저장을 하고 이를 편집할 수 있는 UHD 콘텐츠 인제스트 및 편집용 비디오 서버 시스템의 설계와 구현 방법에 대해 기술한다. 제안된 UHD 콘텐츠 비디오 서버 시스템은 최대 8K UHD 콘텐츠를 실시간으로 인제스트 및 재생하고, 또한 저장된 콘텐츠를 상용 편집툴과 연동하여 8K 콘텐츠를 편집할 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.01a
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• pp.249-251
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• 2021

본 논문에서는 Photon Unity Network[1]를 사용하여 멀티플레이 VR게임 개발 방법을 제안한다. Unity 3D와 Oculus Framework를 활용하여 플레이어 기능을 구현했다. 그리고 Photon Unity Network를 이용하여 서버와 여러 명의 플레이어를 연결해 줄 수 있다.