현 3D 실험방송에서는 기존 시스템과의 역호환성 보장을 위해 좌 영상과 우 영상의 듀얼 스트림을 전송하는 서비스 호환(service compatible) 3D 서비스를 진행하고 있다. 이와 같은 듀얼 스트림 방식은 제한된 방송대역 19Mbps에서 좌,우 두 개의영상을 전송함으로 화질의 제약이 따를 수 있다. 이에 본 논문에서는 상기 고정된 대역폭으로 인한 화질의 열화없이 안정적인화질을 제공할 수 있는 NRT(Non-RealTime)기반 연동형 지상파 3D 방송 시스템을 제안하였다. 제안한 시스템은 지상파 방송대역에 국한되지 않고 비 실시간으로 좌 또는 우 영상을 미리 전송하여 저장하고, 미리 저장된 콘텐츠와 실시간 방송 콘텐츠의 동기화를 통해 고화질 스테레오스코픽 영상을 구성한다. 이를 위해 본 논문에서는 실시간 방송기술과 비 실시간 방송기술을 각각 분석하고, 비 실시간 연동형 고화질 3DTV시스템을 구현할 수 있는 알고리즘을 통한 실험결과를 통해 제안한 NRT 기반 연동형 지상파 3D 방송 시스템을 검증하였다.
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