Xinhua

Two staff members pass by the display screens broadcasting high definition signals of CCTV (China Central Television) in the International Broadcast Center (IBC) in Beijing, China, July 29, 2008. It's said that high definition signals will be first-ever used for TV relays for all 28 events of Beijing 2008 Olympic Games. BOB will produce live TV signals of 5,400 hours for right-holding broadcasters and it's estimated that more than four billion viewers will enjoy the olympic competition through TV broadcasts in 2008.