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전자책 생성 장치 및 방법, 그리고 전자책 무결성 검증 장치 및 방법이 개시된다. 본 발명은, 전자책의 무결성을 검증할 수 있는 정보가 포함된 전자책을 생성하고, 전자책의 위변조 여부를 확인하기 위해 전자책에 포함된 정보를 통해 전자책의 무결성을 검증한다. 본 발명에 따르면, 전자책 표준 규격인 이펍(electronic publication :… Continue Reading
PURPOSE: A digital right management device, a managing method thereof, an electronic publication-based content providing device, and a providing method thereof provide an electronic publication… Continue Reading
PURPOSE: A digital media contents protection system and a method thereof are provided to prevent an increase of a system load in accordance with a service as maintaining compatibility with an… Continue Reading
With rapid urbanization and reckless urban development in the 21st century, the urban environment has gradually gotten worse, and urban heat island effect has been dramatically intensified. Thus, the… Continue Reading
The present invention is a digital data as well as digital cinema system, each device or in a combination of related digital cinema system allows for the verification automatically through visual… Continue Reading