High-definition image sources include terrestrial broadcast, direct broadcast satellite, digital cable, IPTV (including GoogleTV Roku boxes and AppleTV or built into "Smart Televisions"), Blu-ray video disc (BD), and internet downloads.
డిజిటల్ కేబుల్ మరియు రోకు దేనికి ఉదాహరణలు?
High-definition image sources