Updated: Wednesday, 05 Nov 2008, 10:41 PM EST
Published : Wednesday, 05 Nov 2008, 10:41 PM EST
SDTV is the baseline display and resolution for both analog and digital. Transmission of SDTV may be in either the traditional (4:3) or wide-screen (16:9) format.
EDTV is a step up from Analog Television. EDTV comes in widescreen (16:9) or traditional (4:3) format and provides better picture quality than SDTV, but not as high as HDTV.