UHD(Ultra High Definition) 관련기술이 성숙되면서 최근 UHD 방송은 HD(High Definition) 방송 이후 차세대 실감 방송 서비스로 확고하게 자리를 잡아 가고 있다. 이러한 영향으로 UHDTV를 중심으로 UHD 방송장비의 상용화가 점차 확대되고 있고, 국내외 여러 방송사업자들은 서비스 상용화 준비를 서두르고 있다. CJ헬로비전을 포함한 국내 케이블 방송사들은 유일하게 UHD 방송 표준화를 조기에 완료하였고 이를 기반으로 상용 서비스를 준비해 왔기에 세계최초로 2014년 4월에 4K-UHD 방송을 상용화한다. 케이블 방송에서 UHD 방송의 조기 상용화와 표준화는 전송방식의 변경이나 네트워크에 대한 대규모 투자가 없이 UHD 방송을 쉽게 제공할 수 있는 구조이기 때문에 가능했다. UHD 방송은 방송산업 가치사슬의 전 부분에 걸쳐 영향을 주기 때문에 케이블의 4K-UHD 방송 상용화를 계기로 국내 방송산업의 활성화에 기여할 것이다. 본 고에서는 세계최초로 상용화 하는 CJ헬로비전의 케이블 4K-UHD 방송 서비스와 케이블 UHD 방송 표준에 대해서 알아본다.
KSP Keywords
ultra high definition
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