• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.2
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• pp.15-21
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• 2015

In order to secure the compatibility of eBook viewers based on EPUB 3.0, IDPF launched an open project of Readium in February 2012, which supports the standard platform for eBook viewers and the related SDK that can be implemented on different OSs. The current EPUB standard, however, does not provide DRM standards to protect eBook copyrights. Therefore, the compatibility of Readium SDK cannot be secured. Even though the Readium project has tried to design a standard reference software in order to apply DRM independently of EPUB standards, it still does not definitely solve compatibility problems of plural DRMs. This paper suggests a compatibility model based on Readium SDK and ContentMudule technology, in which eBook viewers can work together with plural DRM technology.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.1
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• pp.7-14
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• 2016

In order to guarantee the compatibility of e-Book viewers based on EPUB 3, IDPF launched Readium SDK v1.0 in January, 2015, which was followed by research on the implementation of Readium LCP specifications for user-friendly DRM functions. The complexity of the Readium SDK, however, makes difficulties in interlocking Readium SDK with LCP modules. Moreover, from the perspective of the Readium SDK, which tries to maintain the architecture, independently of any specific DRM technologies, the strong interlock with LCP, as a one DRM, is not desirable. This study represents a Content Protection Framework Model for compatibility of Readium-SDK-based e-Book DRM in order to hide the complexity of Readium SDK and implement an easy interlock between plural DRM and Readium SDK.

• Journal of the Korea Society of Computer and Information
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• v.22 no.4
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• pp.51-58
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• 2017

Research on the Development of EPUB SCP(Secure Content Protection) Technical Specification and International Standardization has been carried out as a R&D project granted by the Korea Copyright Commission since 2014. The research aims to build a standard framework for the EPUB DRM(Digital Rights Management) based on the Readium LCP(Licensed Content Protection) and KS EPUB DRM specifications, to develop element technologies for the framework, and to standardize it as an IDPF(International Digital Publishing Forum) industrial standard. One of the essential features of the EPUB DRM developed though this study is to support the lending model of the digital library. This paper introduces LSD(License Status Document) specification which is a DRM license management protocol for the digital library lending process, and also represents a model which can automatically test the implemented entities of the LSD specification, test scenarios and test materials.

• Journal of Korea Multimedia Society
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• v.20 no.2
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• pp.330-335
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• 2017

We have heard about several keywords of the fourth industrial revolution such as automation, artificial intelligence and connectivity. And electronic publishing systems and ebooks will enable us to experience a new industrial revolution without discrimination. On that level, it is necessary to study a method of automatic accessibility tool for electronic publishing. There are some studies on accessibility standard specifications, accessibility guidelines, and accessibility certificate criteria. but there is little research about automatic inspection tools in electronic publishing area. This paper proposed a library for accessibility inspector of EPUB and its components based on IDPF EPUB accessiblity guidelines and TTA accessibility certificate criteria for reading disabled people. After implementing the library that can be connected to SIGIL, which is the most widely used in Korea, we verified its functionality and its coverage with Korean commercial EPUB files.

• Information and Communications Magazine
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• v.31 no.12
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• pp.97-105
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• 2014

단행본, 소설, 잡지, 만화 등 다양한 형태의 전자출판물에 공통적으로 적용 가능한 표현 기술과 콘텐츠 유통을 위한 패키징 기술로 구성된 표준인EPUB3가 국제표준기구인 ISO/IEC에서 국제표준으로 채택됨에 따라 시장 표준이 공적 표준으로 통합되는 현상이 전자출판 분야에서도 뚜렷이 나타나고 있다. 본고에서는 전자출판 표준인 EPUB3을 교과서 등 교육용 교재, 참고서, 학습서 등 교육 분야에 확대 적용하기 위하여 온라인 평가 서비스, 학습용 소프트웨어 연계, 교육용 메타데이터 활용 등 이질적인 기술 들 간의 융합이 어떻게 이루어져야 하는지에 대한 방향을 제시한다. 이러한 노력은 지난 2013년부터 국제 표준화 단체인 IDPF(International Digital Publishing Forum), IMS Global Learning Consortium, World Wide Web Consortium이 구성한 EDUPUB Alliance를 통해 구체화되고 있다. 따라서 향후 어떠한 구체적인 주제의 논의가 국내에서도 필요한지 알아본다. 또한 디지털 교과서와 학습 교재는 모바일 및 온라인 학습환경에서 다양하게 활용될 수 있으며, 학습자가 생성하는 학습 데이터를 체계적으로 수집하고 분석한다면 학습결과를 향상시키는데 큰 기여를 할 수 있을 것으로 기대한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.2
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• pp.205-214
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• 2012

IDPF, which builds formats and copyright protection standards of eBooks, has announced ePUB 3.0 as a technical standard of eBooks in October, 2011. This standard includes methods how to represent eBooks and technical specifications to protect eBook content. While technical specifications for content protection describe how to represent encryption and digital signature techniques, they do not identify any technical standards for rights expression but just file names for storages of rights information. It does not provide any unification of copyright information representation and formats used by eBook service companies. When copyright protection techniques for eBooks are used, comparability among eBook readers cannot be expected, even though there is a standard of ePUB. This study suggests a method to maintain compatibility toward eBook DRM by using unified rights information process under circumstances where different eBook service companies use diverse methods. The standard reference software of the model proposed in this study, together with other results of this study, will be offered as a registered open software.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.1
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• pp.249-256
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• 2012

ePUB is one of the most pervasive eBook formats since it was announced as a 2009 standard in IDPF(International Digital Publishing Forum). ePUB is compressed as a ZIP Archive format and structured as a standard format of OCF. Domestically and internationally, eBook services applying DRM into ePUB have currently been active, while it does not satisfy various needs from business because it does not support preview service which is due to the encryption of the whole ePUB as a single key. This study suggests a way to apply diverse business models by providing eBook content based on ePUB multiple key encryption method, not by encrypting it simply as a single key. The encryption method which applies a multiple key encryption method is suggested as a practically appliable form together with licence issuing and delivery method and decryption method in eBook readers. The multiple key encryption method suggested in this study will make it possible to support partial preview services of ePUB based eBook content. It will be applied to diverse service models and enhance the security level better then single key based encryption method.

• Journal of the Korea Society of Computer and Information
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• v.21 no.12
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• pp.59-72
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• 2016

DRM(Digital Rights Management) is essential for the copy right protection of eBooks based on ePub 3.0 by IDPF. In this paper, we developed eBSS(eBook Service System) as ePub 3.0 builder and viewer system with DRM and proposed an efficient DRM method which improves the performance of contents generation, security and distribution system. The efficient application of DRM method to the eBook contents based on ePub 3.0 for smart phone is practically useful for eBook service system. It is very useful for the suggested eBSS with DRM method and strategy to apply easily and practically to the encryption and decryption of the eBook contents. Also, it is very efficient to generate the ePub 3.0 contents and to apply DRM method to it especially, by using practically this suggested ePub 3.0 builder system from the view point of the eBook content generation and its viewer such as eBook reader for user and eBook providers.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1632-1635
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• 2015

발전하는 IT 기술은 사회, 문화, 교육 등 전 산업 분야에 많은 영향을 미치고 있으며, e-book 및 콘텐츠 시장은 여러 산업분야에서 주목받고 있는 중요한 기술개발분야 중에 한 부분이라고 할 수 있다. 하지만 현재까지 e-book의 경우 비 표준화 확장, 단 방향성 비 상호작용, 2차원적인 콘텐츠 사용 등 여러가지 한계적 사용에 문제점을 가지고 있었다. 따라서 본 논문에서는 WebGL 3D 콘텐츠를 이용한 인터렉티브 가상 시뮬레이션 e-book 협업 저작도구를 설계하고 구현하였다. 본 연구에서는 표준화된 HTML5 기술과 IDPF에서 제안된 EPUB3를 통해 기존의 e-book 활용의 한계점들을 극복하고, WebGL 웹 표준 기술을 적용하여 인터렉티브 가상 시뮬레이션 사용이 가능한 전자책 그래픽 요소를 구현 하였다. 향후 본 연구를 통해 표준화된 e-book 콘텐츠 시장의 활성화와 효율적인 교육 도구의 발전을 기대한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.6
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• pp.235-245
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• 2011

EBooks refer to electronic versions of books which are accessible via internet with forms of digital texts. In recent years, Amazon's Kindle digital eBooks has revealed the possibilities of success of the e-book market, which leads other companies to launch eBook service such as Google's eBook stores and Apple's iPad and eBook service. These reveal that the eBook market is finally showing a substantial amount of growth. Although the issue of technical support of eBook copyright protection emerges from the fast growing eBook marketplace, current technic of commercial DRM for protecting eBook copyright protection still has problems of non-comparability. Therefore, with the current technical status, DRM comparability problems, which have already occurred in music DRM environment, would also happen in eBook environment. This study suggests a standard framework to support eBook DRM comparability. When development of the standard reference software for eBook DRM comparability is completed, the sources will be registered as shareware to be open to public.