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하태진,김종우,한승조,Ha Tae-Jin,Kim Jong-Woo,Han Seung-Jo 한국정보통신학회 2004 한국정보통신학회논문지 Vol.8 No.8
P2P는 새로운 e비즈니스 모델의 창출에 기여한다는 평가를 받고 있으나 디지털 콘텐츠 저작권 보호문제가 해결되지 않고 있어 P2P서비스의 발전을 위해서라도 디지털 콘텐츠(digital contents)의 저작권보호 방법에 대한 연구가 시급한 실정이다. 본 논문을 통하여 안전한 결제구조를 통한 자금흐름 유도, 사용자 인증과 컨텐츠의 암호화를 이용하여 신뢰성 있는 컨텐츠의 공유를 유도할 수 있고. 컨텐츠의 저작권료를 해결함으로써 창작물에 대한 보호와 저작권료에 관련한 분쟁을 해소할 수 있고, 디지털 컨텐츠 창작문화에 활력소를 불어넣을 수 있다. 이는 다시 P2P 시장의 발전으로 환원되어 차세대 네트워크의 중요한 프로토콜로 성장할 것이다. 본 논문에서는 인터넷 환경에서 개인 사용자들끼리 디지털 콘텐츠를 주고받을 때 PKI기반의 AES알고리즘을 이용한 디지털 저작권관리(DRM) 기술을 이용해서 보안기능을 제공해주는 P2P DRM 알고리즘을 제안하였다. It is evaluated that there is infinit capability of creating new e business using P2P program. but the research for the method to protect the copyright of digital contents is urgent even for development of the p2p service because the problem of copyright protection for digital contents is not solved. Though this article, it can be induced that reliable contents sharing use to a flow fund by secure settlement architecture, user authentication and contents encryption and then it as the problem of copyright fee is solved, it is able to discontinue which trouble with a creation work for copyright fee and protection it's once again as growth of p2p market, p2p protocal is will be grow into a important protocal of advanced network. In this article, When users send digital contants to each other in internet, we proposed the P2P DRM algorism to offer a security function which using the technology of copyright management to use a AES Algorithm based on PKI.
디지털 방송 콘텐츠 복제 방지를 위한 DRM Module 설계
하태진(Seung-Jo Han),한승조(Tae-Jin Ha) 한국정보기술학회 2010 한국정보기술학회논문지 Vol.8 No.3
This paper designed an encryption algorithm that is able to efficiently encrypt and decrypt digital broadcasting contents. The designed algorithm is able to control not by channel but by contents by applying a more efficient DRM technique than the concept of CAS that has functions such as authentication and conditional access. Also, this proposed algorithm materialized a module by applying the DRM with a PCMCIA interface that is for protecting digital broadcasting contents, managing copyrights, and preventing illegal copying by using an encryption chip.
선박 네비게이션 시스템의 효율성 보장을 위한 카메라 장착 중소형 VDR장치 및 데이터 제어방법 연구
민병국,하태진,김용수,박정민,차준섭,Min, Byung Guk,Ha, Tae Jin,Kim, Young Soo,Park, Jung Min,Cha, Jun Sub 한국스마트미디어학회 2013 스마트미디어저널 Vol.2 No.1
The paper presents VDR system for efficiency of ocean navigation device and how to output and to save data using this system as well as compressed digital data and analog video output from the camera are utilized at the same time. The compressed digital data is used to store video for VDR device while analog video is used to display on screen in real-time so that VDR system saves the load on SD memory card without navigation terminal and output it with real-time video. Also, the control method using VDR system are proposed for saving and outputting data. 본 논문은 선박 네비게이션 단말기의 효율성을 위한 VDR 시스템 및 이를 이용한 데이터 출력 저장 방법에 관한 것으로, 압축된 디지털 데이터와 아날로그 영상을 카메라로부터 함께 출력할 수 있도록 함으로써 압축된 디지털 데이터는 VDR 장치의 영상 저장에 이용하고 아날로그 영상은 실시간으로 화면 출력에 이용할 수 있도록 하여, 네비게이션 단말기에 부하를 주지 않고 영상을 실시간으로 모니터로 출력함과 함께 SD 메모리에 저장하게 하는 VDR 장치 및 이률 이용한 데이터 출력 저장 등의 제어방법을 제시하고자 한다.
최진호,김주록,하태진,유장배,김일규,Choi, Jin-Ho,Kim, Ju-Rok,Ha, Tae-Jin,Yu, Jang-Bae,Kim, Il-Kyu 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.1
The efficacy of bioresorbable fixation has recently been described in the osseosynthesis of the oral & maxillofacial region. However, a liitle data exist regarding the use of biodegradable plates and screws for the internal fixation of human mandible fractures. The purpose of this study is to analyze and compare the treatment of mandibular fractures by using a bioresorbable fixation system with conventional titanium system in human mandible fractures. eighteen patients constituted the bioresorbable fixation group and twenty-five patients constituted the titanium fixation group. Both groups underwent open reduction and internal fixation by use of a bioresorbable system or a titanium fixation system. Panoramic radiograph were obtained preoperatively, immediately postoperatively after reduction, at 6 months and at 12 months postoperatively. In the bioresorbable fixation group, complication(infection) occurred in 1 patient(5.6%) and was resolved by incision & drainage, plate removal and antibiotics without untoward sequelae. 2 patients(8.0%) experienced complications in the titanium fixation group and were treated using conservative treatment. There was no statistical difference in complication rates between two groups. Our data supported the use of bioresorbale plate fixation in mandibular fractures as a means of avoiding the potential and well documented problems with rigid titanium fixation systems. In conclusion, the bioresorbable fixation system provide a reliable and sufficient alternative to conventional titanium plate system.