• Journal of Digital Contents Society
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• v.12 no.2
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• pp.165-176
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• 2011

Recently, digital rights management (DRM) related researches are widely spreading with prosperity of IT industries. The DRM technology protects proprietor of copyright by preventing mischanneling and illegal copy. In this paper, we propose a new DRM model that has an enhanced and efficient protocol based on certificate using smart card. The proposed model overcomes weaknesses of WCDRM model and has following additional advantages: first, copy protection is enhanced by hiding user's specific information from attacker by storing the information within smart card; second, server load for contents encryption is reduced by making clear protocols among author, distributer, certificate authority, and users; third, offline user authentication is guaranteed by combining partial secret values in media players and smart card. Exposure of core information also is minimized by storing them in smart card. In addition, we show that the proposed system is more secure than WCDRM model by comparing various factors of anonymous attackers.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.8C
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• pp.689-696
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• 2010

The goal of this paper is to present a novel method for protecting digital image using 2-D cellular automata transform (CAT). A copyright and transform coefficients are used to generate a new content-based copyright and an original digital image is distributed without any hidden copyright. The parameter, which is called gateway value, for 2-D CAT is consisted of rule number, initial configuration, lattice length, number of neighbors, and etc. Since 2-D CAT has various gateway values, it is more secure than conventional methods. The proposed algorithm is verified using attacked images such as filtering, cropping, JPEG compression, and rotation for robustness.

• Journal of the Korea Society of Computer and Information
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• v.18 no.12
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• pp.103-111
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• 2013

At present, a variety of Korean news stories have been about important online content and its importance in the press is becoming higher. Diverse news from businesses are provided to the public as press releases through newspapers or broadcasting media. For such news to become information for a press release, enterprises visit reporters, use e-mails, faxes, or couriers to deliver the information. However, such methods have problems with time, human resources, expenses, and file damage. Also, with these methods it is bothersome for enterprises to check what has been released and for the press to make frequent contact with enterprises for interviews and for content to be released. Therefore, this study aimed to realize a distribution system which enterprises can use to distribute data to be released to the press and to easily check what is to be released while the press can ask for interview requests in a simple way, as well as a news gathering robot that can collects news on the enterprises involved from articles online or in portal sites.

• Journal of Digital Convergence
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• v.13 no.10
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• pp.483-490
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• 2015

The purpose of this study was to systematically organize the information for the regional resources from the agricultural management entities of convergence industry in Chungcheongnam-do. The target was the Sixth Agricultural Industry Association in Chungcheongnam-do; total 70 kinds of resources were investigated. The content was organized by name of regional source, introduction, photo, company and product information, feature of product, introduction of experience program, and etc., containing the value and meaning of products in stories of the regional sources and images. The material was organized in order of grains, fruits and vegetables, marine products, livestock, Korean sauces Kimchi, fermented broth concentrates, beverages tea, and other. It was saved as pdf file to distribute to the members; it may be utilized for online promotion, product promotion in exhibition festival sales promotion, posts for bulletin board hall, and etc. but also for promotional material in overseas marketing after translating to each language.

• Journal of Digital Contents Society
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• v.11 no.3
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• pp.407-416
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• 2010

As the mobile internet rapidly progress and mobile terminals are activated, business entities which want to operate mobile web contents and individuals who want to use it increase. 6005plus.com as "I wish the mobile world" which is mobile UCC(User Created Contents) ponpy/invitation service web site(www.6005plus.com) was constructed. In 6005plus.com web site, which users could easily produce mobile contents and establish mobile web service servers as well, in order for mobile service users to create mobile invitation or ponpy and use it. But the service 6005plus.com advocates is that users can attach ponpy and invitations to the MMS/SMS Call back URL, which needs resolution since it has several inactivated problems. In this paper, we allow users who registered 6005plus.com can create mobile card, invitation, and personal ponpy with registration, so that apply automatic generation technique for users to experience ponpy/invitation service into MMS/SMS Call back URL which 6005plus.com advocates through registration. We also designed my page to which users can send their contents easily, conveniently and by one-stop.

• Journal of Korea Multimedia Society
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• v.12 no.4
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• pp.550-558
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• 2009

In ubiquitous environment, more small, lightweight, cheap and movable device is used than one device used in wired network environment. Multimedia service which is anytime, anywhere, is provided by device. However, it does not ensure the fair use of multimedia contents and causes damage to the contents providers because of illegal copy and distribution and indiscriminate use of digital contents. For solving this problems, DRM is applied to wired network but it has the problems does not protect stored license and manage license completely because of depending on simple protection such as device authentication and cryptographic algorithm. This paper proposes the license management model using digital forensic and DRM that prevents contents and licenses from distributing illegally and also enables the creation of evidence for legal countermeasure and the protection of license in whole life cycle.

• Journal of the Korea society of information convergence
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• v.1 no.1
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• pp.33-40
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• 2008

When performing a software development project, the most important thing is building a result with planned quality within development period. Particularly, if the project is delayed or has no good quality in the case of the content software development project which is sensitive to the release time and quality, it is immediately connected to the failure of the whole project. Extreme programming is a methodology that divides the development cycle into smaller units for reducing the risk factor of the project in which the development period is important. In this paper, we suggest the expanded extreme programming which can consider the development period and quality at the same time for content software development environment. The suggested methods are documentation mechanism that is upcoming during the development project and multiple role model which is extended from pair programming method.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.6
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• pp.71-80
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• 2011

According to rapid development of communication and video compression technology, the video contents are easily disseminated into various areas. In order to prevent illegal distribution of video contents, the necessity of video contents protection technology is increased. In this paper, we propose the video encryption and decryption algorithm based on logistic map and design the prototype system in real-time embedded environment. The sender system with encryption capability is implemented on DM642 EVM target board and the receiver system with decryption capability is implemented in satellite D-STB. Experimental results show that the time change ratio of encoding process on target board are less than 0.97% and the time change ratio of the decoding process on D-STB is less than 1.75%. So, we verify that the proposed encryption/decryption system can be used in real time application.

• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.32-39
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• 2015

In this paper, We propose the futuristic map using variety technology of advanced ICT-based. The futuristic maps are expected to developed into a new format of user participation to express the results in various formats through the understanding and interpretation of the facts and phenomena of tangible and intangible that exist in the real world. In the future, the map is expected to be developed into form of a new paradigm map made in real time that economy, industry, the collection of information necessary for everyday life, processing, usage, analysis, distribution and sharing. In this paper, we provide a real-time personalized contents to digitize the information of the real space based on the concept of map, databases, spatial analysis and describes the key technologies that characterized by the representation of time-series data by analyzing and prediction every field macro phenomena of society, economy, culture and etc. And we establish the concepts of the 'New Paradigm Map' for future creative economy.

• Journal of Digital Contents Society
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• v.19 no.4
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• pp.809-814
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• 2018

With the proliferation of cloud computing infrastructures, service providers are able to deploy services in on-demand manner. Recently, microservice architecture has been attracting attention in order to maximize the efficiency of resource expansion in cloud infrastructure. Instead of implementing all of the service functions in a single software, service providers can easily and autonomously implement the necessary services by interconnecting the necessary services through an efficiently designed application programming interface (API). Moreover service developer can freely choice programming languages and define software, and functional structures to meet their functional requirements. In this paper, we propose virtual infrastructure manager service based on microservice architecture and evaluates its performance in scalability perspective.