Improved-definition television (IDTV)

The acronym thickens the hi-tech alphabet soup that nowadays swamps the language (it stands for improved-definition television), but unlike other schemes of this kind, IDTV has the advantage of being actually available right now.

Improved-definition television (IDTV) or enhanced-quality television transmitters and receivers exceed the performance requirements of the NTSC standard, while remaining within the general parameters of NTSC emissions standards.