extended

Extended-definition television

Extended-definition television (EDTV) is television with

  1. improvements to the U.S. standard National Television System Committee (NTSC) television system;
  2. improvements that are receiver-compatible with the standard NTSC television system;
  3. improvements that modify the standard NTSC television system emission standards.

EDTV improvements may include

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.

See also

References

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