• Journal of Digital Convergence
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• v.10 no.10
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• pp.465-473
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• 2012

The mobile devices and cloud computing technology introduced new content services such as N-Screen service. The DRM techniques have been developed to support interoperability and multi-platform for new environment of content service. Nevertheless, it is still inconvenient for the consumers to purchase a new DRM-supported device or to migrate some purchased contents into new device due to the change of the subscription of service. Therefore, in this paper, cloud-based DRM model which is referred as DRMaaS (DRM-as-a-Service) model, is proposed to allow the consumer to freely use and move some DRM-protected contents in various smart devices regardless of subscription of service.

• Korea Information Processing Society Review
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• v.19 no.1
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• pp.41-55
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• 2012

• Convergence Security Journal
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• v.14 no.2
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• pp.3-9
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• 2014

As the subscribers of the digital cable and IPTV broadcasting are increasing, the VOD service has established a solid foothold as a profit model of the broadcasting industries. And what's more, the VOD service is emerging as a key application of the N-screen technologies. In the circumstance, broadcasting companies are trying to provide mobile services to improve the satisfaction of their VOD services usage. The paper introduces a VOD mobile app (of a domestic digital cable broadcasting), which includes the functions of promoting the VOD programs printed on a VOD guide book, directly transmitting the information (e.g., book-marking, remote-control signals) generated by the VOD mobile app to a set-top box, and watching the video contents stored in the mobile device on TV.

• The Journal of the Korea Contents Association
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• v.11 no.12
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• pp.543-551
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• 2011

Recently various handheld multimedia devices are spreading, and users want to share media contents across their own multiple devices. Conventional synchronization techniques for N-screen services can continuously play contents by switching from an initial device to a new device. In this case, even if a new device plays continuously contents, the initial device stops playing them. In this paper, we propose a synchronization technique in which multiple devices can share and continuously play same contents simultaneously by gathering and passing URI and current play-time of the contents. The proposed synchronization technique is built on UPnP and DLNA, and tested by implementing a wireless home media network system.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.01a
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• pp.153-154
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• 2014

스마트 기기는 사용자에게 다양한 분야의 정보를 제공하고, 활용할 수 있는 기능을 제공한다. 스마트 기기의 형태는 초기에는 휴대폰에만 국한되었지만, 현재는 태블릿, TV, 프린터등 다양한 형태로 존재한다. 스마트폰의 독립적인 정보제공 서비스가 현재까지 주를 이루고 있으나, 점차 다양한 스마트기기의 출현으로 스마트 디바이스간의 연동을 바탕으로 정보를 제공하는 새로운 시스템을 필요로 하고 있다. 본 논문에서는 스마트폰과 스마트TV를 연동하여 사용자에게 정보를 제공하는 시스템을 구현하여 제시한다. 스마트기기의 연동을 위해 N-스크린 컨버전스를 이용하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.07a
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• pp.7-8
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• 2012

본 논문에서는 클라우드 플랫폼인 Windows Azure를 사용하여 N-스크린 서비스 구현 방법을 제안한다. 이 방법은 클라우드 컴퓨팅 환경에서 Map/Reduce 기법을 사용하여 대용량 동영상 콘텐츠를 분할하고, 인코딩한다. Windows Azure의 Web Role에서는 사용자가 요청한 인코딩 작업을 수신하고, Worker Role에서는 요청받은 인코딩 작업을 처리한다. Windows Azure의 많은 가상머신에 인스턴스를 할당하여 처리함으로써 인코딩 소요시간을 단축할 수 있다.

• Broadcasting and Media Magazine
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• v.17 no.1
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• pp.8-19
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• 2012

• Journal of the Korea Convergence Society
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• v.10 no.3
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• pp.395-400
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• 2019

The Web environment of the frontend domain is increasingly competitive to preempt the new standard of presentation layer. N-Screen, a service that enables users to seamlessly use one content in various devices in Korea, is competing for market preemption by recognizing it as a core service of the future. In the cloud computing, N-screen is a typical service type. However, most of the frontend research required for groupware in enterprise environments has been limited to responsive web design for the web and native apps for mobile. Gradually, the need for MVC design patterns is increasingly widening in enterprise environments to overcome the cultural differences of companies and to support one source multi-use strategy supporting multiple devices and development productivity. Therefore, in this study, we will analyze and design JPetStore with hybrid application design based on Spring MVC, e-government standard framework environment of next generation web standard, and provide reference model of frontend hybrid apps design in future enterprise environment.

• Broadcasting and Media Magazine
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• v.17 no.1
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• pp.78-85
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• 2012

무선망과 인터넷 초고속화와 함께 비디오 스트리밍, 모바일 방송, IPTV 등 통방융합 환경에서의 비디오를 중심으로 한 멀티미디어 콘텐츠 서비스가 보편화되고 있다. 이러한, 이종의 접속망과 다양한 성능의 단말이 혼재하는 융합 콘텐츠 소비환경에서 스마트폰, Tablet PC, IPTV 등 다양한 단말기에서 비디오, 음악, 게임, 데이터 등의 콘텐츠를 끊김 없이 이용할 수 있는 서비스를 일반적으로 N-Screen 서비스라고 한다. 이렇게 단말간의 이동성을 제공하기 위해서는 다양한 플랫폼 형태에 따른 N-Screen 서비스 표준화가 필요하다. 또한, 다양한 스마트 스크린간의 끊김 없는 서비스 이용이 가능한 송수신 기술 및 네트워크 자원을 활용하는 서비스들과 인터넷 기반의 서비스들 간의 상호 연계를 위한 기술들의 표준화가 계속 진행되어야 한다. 본고에서는 이러한 차세대 네트워크 환경에서 N-Screen을 위한 플랫폼과 플랫폼 형태에 따른 N-Screen 서비스 분류에 대해 살펴본다.

• The Journal of the Korea Contents Association
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• v.20 no.12
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• pp.123-135
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• 2020

This study examined how the quality of Netflix service affects user satisfaction and continuance intention. This study classified the quality of Netflix service as content diversity, rate system appropriateness, recommendation system, N-screen service, binge viewing, and service quality, and examined the effect of each dimension on user satisfaction and continuous intention. We conduced an online survey on 202 Netflix users and analyzed the data with the SEM. Results are as follows. First, content diversity, recommendation system, binge-viewing and service quality are positively associated with user satisfaction. Second, the N-Screen service has neither direct nor indirect effects on continuance intention. However, rate system has a direct effect on continuance intention. On the other hand, content diversity, recommendation systems, binge-viewing, and quality of service affect continuance intention positively through user satisfaction. Finally, it is shown that user satisfaction and continuance intention have a significant static correlation as predicted.