Title :
PAL and HDTV transmission experiments using SDH networks
Author_Institution :
BBC Res. & Develop. Dept., Tadworth, UK
Abstract :
The BBC has been studying the use of SDH for internal routeing and external transmission of audio and video signals since the CCITT Recommendations appeared in the late 1980s. A prototype fibre-optic video routeing system was developed in RACE Project 1036 which used a combination of optical wavelength division multiplexing and electrical time-division multiplexing (WTDM). SDH was adopted as the multiplexing standard. Codecs were developed in RACE Project 1081 to allow PAL, HDTV and audio signals to be carried over this and other SDH networks. This paper describes this work and discusses the benefits SDH networks offer broadcasters
Keywords :
high definition television; optical links; synchronous digital hierarchy; telecommunication networks; television broadcasting; time division multiplexing; wavelength division multiplexing; BBC; CCITT Recommendations; HDTV transmission; PAL transmission; RACE Project 1036; RACE Project 1081; SDH networks; audio signals; codecs; electrical time-division multiplexing; fibre-optic video routeing system; interfaces; multiplexing standard; optical wavelength division multiplexing; video signals;
Conference_Titel :
Television Over New Networks (The Impact on SDH on Broadcasting), IEE Colloquium on (Digest No.1994/131)
Conference_Location :
London
