336 INDEX Trade show displays, 275 Traffic capacity calculations, 303 minimum bitrate, 303­304 multicast, 307­310 unicast, 304­306 Transitions playlists, 202 posters, 64 PowerPoint presentations, 79­80 rendering servers, 236 virtual TV channels, 66 Transmission formats HDTV broadcasting, 39 virtual TV channels, 230 Transmission time, 252 Transmitters in future systems, 291 Transparent layers, 59 Transponders, satellite, 162­164 Universal Mobile Telecommunications System (UMTS), 247, 259­260, 263 Updating continuous, 233­234 Internet-based distribution, 120­124 media players, 133­136 software, 267­268 Uplink satellite signals, 161­163 Uploading content, 227­228 USB interfaces, 107 User interface devices for customer terminals, 71 V Vertically polarized satellite signals, 171­173 VGA. See Video Graphics Arrays interface