The number of households worldwide viewing HDTV is set to rise from 45 million today to 255 million in 2013, according to a study by IMS Research.
It estimates that 45 million households worldwide received HDTV service via Direct to Home (DTH), cable, IPTV and Digital Terrestrial TV (DTT) at the end of 2007, with approximately the same number of HDTV sets shipping during the year.