Advanced Television Systems Committee - (ATSC) - Established in 1983, the ATSC was set up to develop voluntary technical standards including interactive television systems and digital high definition television (HDTV). The ATSC is often thought of as a committee addressing the needs of the North American Market. The ATSC standard for HDTV was approved in 1995 and adopted (with the exception of the mandatory video formats section) by the FCC in 1996.  It's to replace the analog NTSC format in North America. The ATSC has set a number of standards concerning digital television. www.atsc.org. & informitv & http://en.wikipedia.org/wiki/ATSC

ATSC Digital Audio Compression

ATSC Digital Television Standards

ATSC iDTV Committee