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.
భూగోళ ప్రసారాలు, ప్రత్యక్ష ప్రసారాలు దేనికి ఉదాహరణలు?
High-definition image sources