• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2006.07a
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• pp.470-470
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• 2006

• Journal of Korea Multimedia Society
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• v.24 no.4
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• pp.558-568
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• 2021

The digital image to be accepted as legal evidence, it is important to verify the authentication of the digital image. This study proposes a method of authenticating digital images through three steps of comparing the file structure of digital images taken with iPhone, analyzing the encoding information as well as media logs of the iPhone storing the digital images. For the experiment, digital image samples were acquired from nine iPhones through a camera application built into the iPhone. And the characteristics of file structure and media log were compared between digital images generated on the iPhone and digital images edited through a variety of image editing tools. As a result of examining those registered during the digital image creation process, it was confirmed that differences from the original characteristics occurred in file structure and media logs when manipulating digital images on the iPhone, and digital images take with the iPhone. In this way, it shows that it can prove its forensic authentication in iPhone.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2003.11a
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• pp.83-86
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• 2003

With the opening of digital broadcast services and development of wire/wireless Internet, the current multimedia broadcasting is provided for has various services. The user will be provided lots of various content through the various channel and media. Content provider and consumer want the various service using content with the better quality which is fit to user preference. For transmitting this content in the limited transmission channel capacity, it needs to transmit the highly compressed content which user wants. The content of 3D mesh model-based on MPEG-4 enables the various content service that provides the lower capacity and the better quality, and Targeting service enables just provide the contents that user more wants and likes. The adaption of Java application program and 3D program can provide the content service utilizing 3D mesh model, so content provider and consumer can share the more information about the content. This paper has presented the study on the targeting service using compression of 3D mesh model-based on MPEG-4 and the adaptation of Java application program using it

• Journal of Korea Multimedia Society
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• v.19 no.4
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• pp.765-773
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• 2016

As multimedia content technology developed, there are many cases that service contents are being provided in many different ways in the cloud-based media service system. A DRM is a technology that can enhance the copyright of the digital content by providing right information. It is available on a single platform and has a problem that the additional cost when the platform is changing. In this paper, we propose a media service system based on cloud computing. It can be used on multiple platforms at the same time by applying a number of DRM for digital contents, and allows use of a new authentication for another platform without any additional cost.

• Journal of Digital Contents Society
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• v.11 no.4
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• pp.445-452
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• 2010

This paper deals with the exploratory study & experimentation for foundation & theoretical base of menu structuring & design improvement of digital media (IPTV, Digital cable TV) service players. Digital media service providers had been offered many cases of menu structure since their service launched. Researcher set a research topic which verification of eye tracking velocity when media user feels with perceived ease of design and the familiarity. Researcher arrives at a conclusion through as stated above experiment that vertical type of menu and horizontal type of menu are differentiated from the contents characteristics. Research conclusions & implications are strong theoretical base with digital media service players when they planning and designing their service structuring.

• 한국IT서비스학회:학술대회논문집
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• 2009.05a
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• pp.588-592
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• 2009

The latest advances in great revolution for digital media and contents industries with Ubiquitous era. Because of spread and supply of various multimedia devices with combination digital with network, we need various type of digital contents. The Digital contents consists of Middleware industries, network business, contents service presenters and users. For supporting digital media. contents and media devices have been converging Digital contents convergence has been proceeding rapidly in media, broadcast and communication field. And also, whole Environment for these industries has been changing, too. Wee need another digital contents convergence for new type of products and services because of convergence of IT and broadcast. In addition, new business trends is very important about these new industrial change and developments with digital contents convergence.

• Journal of Digital Convergence
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• v.12 no.1
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• pp.273-280
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• 2014

This study deals with the digital policy proposal through the study about the relation of the sustainable use and the addiction to social media such as facebook. Researcher tried to figure out the antecedents and consequence factors about the service addiction recognized by the social media users and to obtain the measures for the sustainable use of service and the implications for the prevention of addiction. Research results showed that 1) the individual innovation had an effect on the service satisfaction, the addiction, and the sustainable use, 2) the service satisfaction influenced on the addiction and the sustainable use, 3) the perceived service addiction had a reverse effect on the sustainable use. This is described that user's addiction recognition is the obstacle of sustainable growth in service. The proposed policy of this research is summarized as the following two. 1) When the users act the addictive using behavior, service provider has to pay attention to user's withdrawal from the service because of their addiction. 2) The government should offer healing facilities, service etc. for the addicted users and the prevention of the service addiction when they recognized their discomfort.

• Journal of Korea Society of Digital Industry and Information Management
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• v.20 no.1
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• pp.75-85
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• 2024

This study explored the overall perception of teaching media from the perspective of pre-service teachers. For this purpose, reflection journals written by 138 pre-service teachers were analyzed, and positive and negative perceptions of teaching media were explored. In the reflection diary, pre-service teachers were asked to write down examples of appropriate use of instructional media and the effects of their experiences, cases of inappropriate use of instructional media, and areas requiring improvement. The main research results are as follows. First, the positive aspects of teaching media perceived by prospective teachers were that it presented examples that could help understanding, aroused curiosity to focus attention, and encouraged participation to motivate learning. Second, the negative aspects of teaching media perceived by prospective teachers include cases where the playback time of the video containing learning content is excessively long and the content of the video is unclear or is higher than the learner's level and difficult to understand. This study is significant in that it presents pre-service teachers experiences and perceptions of teaching media and their desirable use methods.

• 한국정보통신설비학회:학술대회논문집
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• 2004.08a
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• pp.204-208
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• 2004

인터넷 기술의 발달로 기존의 ADSL망에서 VDSL 및 메트로 이더넷으로 진화함에 따라 PSTN망에 의한 전화서비스가 인터넷폰으로 점차 대체되어가며, 수 Kbps 대역폭의 웹캐스팅서비스는 수 Mbps 고화질 인터넷방송이 가능하며, 이러한 통신과 방송의 융합은 하나의 대세로 간주되어, 케이블 사업자의 케이블 모뎀을 이용한 방송 및 초고속 인터넷 서비스에 이어, 통신사업자들도 VOD 및 IP-TV, 인터넷폰을 동시에 제공하는 방안을 준비중에 있다. KT도 홈게이트웨이 기반의 상용 VOD 서비스가 2004년 6월에 개시되어 TV를 통한 홈엔터테인먼트의 초석을 다지게 되었으며 앞으로 IP-TV 및 인터넷폰 서비스를 계속적으로 제공할 예정에 있다. 본고에서는 통신사업자 측면에서 통신 및 방송서비스가 어떻게 융합될 것이며 최신 이슈가 되고 있는 트리플 플레이 서비스 및 전망 그리고 해외 사례를 알아보고, KT에서 제공중인 IP망관련 서비스에 대하여 살펴보기로 한다.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.296-296
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• 2004