The Consumer Electronics Association (CEA) has decided to introduce more detailed definitions for digital television products in response to the proliferation of all new digital televisions.

HIGH-DEFINITION TELEVISION (HDTV)
HDTV refers to a complete product/system with the following minimum 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 720p, 1080i, or higher.
Aspect Ratio - Capable of displaying a 16:9 image. Note: In specifications found on product literature and in owner's manuals, manufacturers are required to disclose the number of vertical scanning lines in the 16:9 viewable are, which must be 540p, 810i or higher to meet the definition of HDTV.
Audio - Receives and reproduces, and/or outputs Dolby Digital audio.

HIGH-DEFINITION TELEVISION (HDTV)
Monitor:HDTV Monitor refers to a monitor or display with the following minimum performance attributes:
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. Note: In specifications found on product literature and in owner's manuals, manufacturers are required to disclose the number of vertical scanning lines in the 16:9 viewable are, which must be 540p, 810i or higher to meet the definition of HDTV.

HIGH-DEFINITION TELEVISION (HDTV)
Tuner:HDTV Tuner refers to a RF receiver with the following minimum performance attributes:
Receiver - Receives ATSC terrestrial digital transmissions and decodes all ATSC Table 3 video formats.
Outputs - Outputs the ATSC Table 3 720p and 1080i/p formats in the form of HD with the minimum active vertical scanning lines .
Audio - Receives and reproduces, and/or outputs Dolby Digital audio.

ENHANCED DEFINITION TELEVISION (EDTV)
EDTV refers to a complete product/system with the following minimum 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 480 progressive (480p) or higher.
Aspect Ratio - None specified.
Audio - Receives and reproduces, and/or outputs Dolby Digital audio.

ENHANCED DEFINITION TELEVISION (EDTV)
Monitor:EDTV Monitor refers to a monitor or display with the following minimum performance attributes:
Display Scanning Format - Has active vertical scanning lines of 480 progressive (480p) or higher.
Aspect Ratio - None specified.

ENHANCED DEFINITION TELEVISION (EDTV)
Tuner:EDTV Tuner refers to a RF receiver with the following minimum performance attributes:
Receiver - Receives ATSC terrestrial digital transmissions and decodes all ATSC Table 3 video formats.
Outputs - Outputs the ATSC Table 3 720p and 1080i/p formats with minimum active vertical scanning lines of 480p. Alternatively, the output can be a digital bitstream output capable of transporting 480p, except the ATSC Table 3 480i format can be output at 480i.
Audio - Receives and reproduces, and/or outputs Dolby Digital audio.

STANDARD DEFINITION TELEVISION (SDTV)
SDTV refers to a complete product/system with the following minimum 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, and/or outputs Dolby Digital audio.

STANDARD DEFINITION TELEVISION (HDTV)
Tuner:SDTV Tuner refers to a RF receiver with the following minimum performance attributes:
Receiver - Receives ATSC terrestrial digital transmissions and decodes all ATSC Table 3 video formats Outputs - Outputs all ATSC Table 3 formats in the form of NTSC output.
Audio - Receives and reproduces, and/or outputs Dolby Digital audio.