extended-definition television
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Enhanced-definition television
Enhanced-definition television, extended-definition television, or EDTV is a United States Consumer Electronics Association (CEA) marketing shorthand term for certain digital television (DTV) formats and devices. Specifically, this term defines formats that deliver a picture that is superior to that of standard-definition television (SDTV), but not as detailed as high-definition television (HDTV).
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extended definition television (EDTV)
Television in which (a) improvements are made to the standard National Television System Committee (NTSC) television system, (b) the improvements are receiver-compatible with the standard NTSC television system, and (c) the improvements modify the standard NTSC television system emission standards. Note 1: EDTV improvements may include (a) a wider aspect ratio, (b) a higher picture definition than NTSC definition, and (c) any of the improvements used in improved-definition television (IDTV). Note 2: When EDTV signals are transmitted in the 4:3 aspect ratio, it is referred to as "EDTV." When transmitted in a wider aspect ratio, it is referred to as "EDTV-Wide."
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