• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.646-649
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• 2012

스마트폰의 빠른 확산과 웹 기술의 발전과 더불어 스마트폰을 통한 불법 콘텐츠 유출 가능성이 심화됨에 따라 스마트폰 포렌식에 대한 연구가 활발히 진행되고 있다. 스마트폰 내 증거 데이터는 기존의 모바일 디바이스에서 제공되었던 문자메시지, 송수신 히스토리 정보 외에 이메일, 웹 검색 히스토리, 사용자 이동경로, 소셜 네트워크 클라이언트 파일도 중요한 기록 정보로 제공된다. 이에 본 연구에서는 스마트폰 내 저장되어 있는 불법 콘텐츠 사용 흔적을 추출하여 소셜 네트워크에서의 불법 콘텐츠 유통 상황을 대응하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.383-384
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• 2013

현재 스마트 디바이스 콘텐츠는 각 플랫폼별로 독립적인 프로그래밍 언어와 개발 환경이 존재하기 때문에 다양한 플랫폼에 동일한 콘텐츠를 제공하기위해서는 각 플랫폼에 적합한 방식으로 중복 개발되어야 한다. 스마트 크로스 플랫폼은 이러한 문제점을 해결하기 위한 가상기계 기반 솔루션으로 다양한 개발 언어를 지원하고, 탑재된 모든 플랫폼에 동일한 실행환경을 제공하여 콘텐츠 개발을 용이하게 하고 다른 플랫폼으로의 이식 비용을 절감할 수 있는 장점을 가진다. 본 논문에서는 스마트 크로스 플랫폼에서 Java 프로그래밍언어를 지원하기 위한 컴파일러를 소개한다. 구현된 Java 컴파일러는 Java 콘텐츠를 입력으로 받아 스마트 크로스 플랫폼에서 실행하기 위한 플랫폼 독립적인 스택 기반 가상기계 코드인 SIL을 생성한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1237-1240
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• 2010

지금의 IPTV는 IP기반 방송융합 서비스로서 현재 세계 유명 통신 사업자들을 중심으로 빠르게 발전하고 있다. 하지만 'IP+방송' 이라는 그저 단순한 결합과 부가서비스들의 제한으로 인해 기술의 비효율성이 드러나 있으며, 주로 IPTV서비스를 필두로 현재 콘텐츠에 대한 유출사고가 이루어지고 있다. 따라서 변화된 새로운 형태의 차세대 IPTV서비스와 더불어 그 특성에 맞게 보안 서비스에 대한 요구사항이 필요하다. 본 연구에서는 유무선 통합 환경에서 제공되는 IPTV서비스에서의 안전하고 효율적인 콘텐츠 서비스 제공을 위한 'CAS 적응형 DRM 모델'을 제안하였다. 사용자가 다운로드한 DRM이 적용된 콘텐츠를 안전하고 효율적으로 자신이 소유한 디바이스에서 이용할 수 있는 방안을 제시한다.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.70-74
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• 2006

In this paper, We propose the real-time monitor and control mechanism based-on web service for intelligent robot called URC(Ubiquitous Robotic Companion). URC is intelligent robot designed to interact with external digital device that can communicate through wire or wireless. In this paper, we designed the result of this study into the target robot called NETTORO and proved its practical worth. we optimized web-service technology in Embedded system environment so that can monitor and control indoors in remote place through acquired information from various sensors / actuators and then we designed. Also, we described command port to WSDL, so that can apply variously such as web server or application program in AXIS engine through gSOAP transmission protocol.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.6 no.1
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• pp.45-50
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• 2013

Recently, as various devices including the smart phone, tablet and smart TV increase rapidly, it have been trouble to develop services separately, which are the same as in each device. When it comes to manufacture these kinds of web applications, what is worse, it takes too much time, cost ineffective and hard to maintain as well. In order to solve the non-unity of these flat forms, some researches for the responsive web design according as the hybrid framework are being progressed. In this paper, we analyzed the technologies and trends of the hybrid framework, and also implemented the responsive web contents which is based on hybrid framework.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.143-151
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• 2016

Many people interested in indoor air quality monitoring since they spend a majority of their time indoors such as homes and offices. This paper proposes the effective indoor air quality monitoring system and it can gauge carbon dioxide, particulate matter and VOCs(Volatile Organic Compounds) which can be harmful to humans. The proposed system is composed of three main modules which are device, web server, and mobile application. In order to evaluate the performance, we tested two cases which are candle and smoke. We monitor the condition of indoor air quality with our mobile application. Also, we developed the information graphics to compare the condition of air quality between indoor and outdoor and this mobile application improves usability.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.3C
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• pp.293-301
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• 2006

In this paper, we design and implement the UHSNS-DRM(Ubi-Home Smart Multimedia Streaming-Digital Right Management) in Ubi-Home. The proposed system support flexible distribution platform for digital content copyright protection and management in Ubi-Home. This system also can provide multimedia streaming service to authorized users who are using PC, STB, PDA, and Portable Device, etc. Furthermore, we adopt concept of domain authentication and it help to improve the efficiency of license management for all devices in Ubi-Home. We design user's location recognition algorithm in order to provide intelligent services. Of course, this algorithm is applied for the proposed system. Start after striking space key 2 times.

• Journal of Digital Contents Society
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• v.10 no.1
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• pp.27-35
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• 2009

Recently, an interest in mobile games is increasing according to the extension of the high speed network infra and the development of mobile devices. In the paper, we propose a mobile Stouku game which trains a brain. The proposed game is user-oriented play style that the game users can raise their characters theirselves. It gives users a sense of achievement and can also help improve intelligence by becoming familiar with a numeral. The game raises an awareness and immersion by adding various events and lowering the degree of difficulty more than previews games. In the paper, we demonstrate the proposed Sudoku game in the mobile device and present the result.

• The Journal of the Korea Contents Association
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• v.18 no.1
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• pp.487-492
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• 2018

The purpose of the study is discovering the effects of different VR devices in learning. For this purpose, this study conducted experiments in HMD and Tablet PC learning environments to analyze differences in device characteristics according to technological evolution. In the experimentation, 37 test subject members were involved and Talklish program, English education service, were used as a learning content. The results showed that the learning method using HMD VR has a higher level of immersion, social consciousness, and learning motivation than Tablet PC methods.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.66-68
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• 2008

This paper provides a user interface for mutual collaboration table top display technology. The biggest difference is that the existing interface with existing research through a single device to multiple users simultaneously enabled oriented way of face to face. On the other hand, in collaboration important deadline table top display device to device-oriented approach in which the order of one of the devices require users. Collaborative research is actively underway, but to do so focused still many challenges in this situation. This paper provides for collaboration on global trends on a table top display interface for more mutual collaboration with the user interface for about checking out on a table top display, currently being developed by a collaboration among users against a table top display technology.