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SDTV

SDTV

SDTV refers to digital transmissions with 480-line resolution, either interlaced or progressive scanned formats, in either 4:3 or 16:9 aspect ratios.

SDTV offers better imagery than conventional analogue picture resolution, but usually does not come up to HDTV in visual and audio quality or resolution.

Some Typical Digital TV Resolutions:

SDTV:
480i - The picture is 704-by- 480 pixels, sent at 60 interlaced fields per second (30 complete frames per second).
Note: NTSC-Analog TV resolution is 480-i.
480p - The picture is 704-by-480 pixels, sent at 60 complete frames per second.

HDTV:
720p - The picture is 1280-by-720 pixels, sent at 60 complete frames per second.
1080i - The picture is 1920-by-1080 pixels, sent at 60 interlaced fields per second (30 complete frames per second).
1080p - The picture is 1920-by-1080 pixels, sent at 60 complete frames per second.