High Definition Television (HDTV):

HDTV refers to a complete product/sys-tem with the following mini-mum
performance attributes:

Receiver—Receives ATSC terrestrial digital transmissions and decodes all
ATSC Table 3 video formats

Display Scanning Format—Has active vertical scanning lines of 720
progressive (720p), 1080 interlaced (1080i), or higher

Aspect Ratio—Capable of displaying a 16:9 image

Audio—Receives and reproduces, and/or outputs Dolby Digital audio

STANDARD DEFINITION TELEVISION (SDTV):

SDTV refers to a complete product/sys-tem with the following performance attributes:

Receiver—Receives ATSC terrestrial digital transmissions and decodes all
ATSC Table 3 video formats, and produces a useable picture

Display Scanning Format—Has active vertical scanning lines less than that of
EDTV

Aspect Ratio—None specified

Audio—Receives and reproduces usable audio