Title :
Prioritization and transport in the ADTV digital simulcast system
Author :
Joseph, K. ; Ng, S. ; Siracusa, R. ; Raychaudhuri, D. ; Zdepski, J. ; Girons, R. Saint
Author_Institution :
David Sarnoff Res. Center, Princeton, NJ, USA
fDate :
8/1/1992 12:00:00 AM
Abstract :
A technical overview of the prioritization and transport in the advanced digital television system (ADTV) is provided. ADTV incorporates an efficient MPEG-compatible compression algorithm at its central core, with application-specific data prioritization and transport features added as separable layers. The compression process is based on a 1440×960 HDTV format, producing a selectable bit-rate in the region of 15-20 Mb/s. The data prioritization layer of ADTV achieves robust delivery over an appropriate two-tier modem by separating compressed video data into high- and standard-priority bit-streams with appropriate bit-rates. These prioritized data are then formatted into fixed-length cells with appropriate data-link-level and service-specific adaptation-level headers
Keywords :
digital communication systems; high definition television; television broadcasting; 15 to 20 Mbit/s; ADTV digital simulcast system; HDTV format; MPEG-compatible compression algorithm; adaptation-level headers; advanced digital television system; compressed video data; data link level headers; fixed-length cells; prioritization; selectable bit-rate; transport; two-tier modem; Cities and towns; Compression algorithms; Consumer electronics; Decoding; Digital TV; Error correction; HDTV; Robustness; Transform coding; Video compression;
Journal_Title :
Consumer Electronics, IEEE Transactions on
