Enhanced-definition television

"EDTV" redirects here. For the 1999 film directed by Ron Howard, see EDtv. For the former television channel, see Emirates Dubai Television.

Enhanced-definition television, or extended-definition television (EDTV) is a Consumer Electronics Association (CEA) marketing shorthand term for certain digital television (DTV) formats and devices. Specifically, this term defines an extension of the standard-definition television (SDTV) format that enables a clearer picture during high-motion scenes compared to previous iterations of SDTV, but not producing images as detailed as high-definition television (HDTV).

The term refers to devices capable of displaying 480-line or 576-line signals in progressive scan, commonly referred to as 480p (NTSC-HQ) and 576p (PAL/SECAM) respectively, as opposed to interlaced scanning, commonly referred to as 480i (NTSC) or 576i (PAL, SECAM). High-motion is optional for EDTV.[1]

In Australia, the 576p resolution standard was used by the Special Broadcasting Service (SBS TV) and Seven Network, being technically considered high-definition.[2][3]

In Japan, the term is associated with improvements to analog NTSC called EDTV-I (or "Clear-vision") and EDTV-II (or "Wide-aspect Clear-vision") including ghost cancellation, digital sound or widescreen broadcasts, using a methods vaguely similar to PALPlus.[4][5][6]

In Europe, it can be applied to analog PALPlus or MAC broadcasts.[7] In other countries definitions may vary.

  1. ^ "CNET Glossary: EDTV". CNET Reviews. 2009-06-11. Archived from the original on 2009-06-11. Retrieved 2023-02-27.
  2. ^ Simpson, Campbell (September 29, 2010). "Buying guide: TVs - We show you the differences between LCD, plasma and LED televisions". Good Gear Guide. Archived from the original on 2011-03-31. Retrieved 2023-02-27.
  3. ^ Digital Television - Who's Buying it? (PDF). Parliament of Australia. p. 134.
  4. ^ FUKINUKI, Takahiko (March 1991). "EDTV". search.ieice.org. Retrieved 2023-02-27.
  5. ^ Mansfield, Simon (February 5, 1992). "HI-Vision TV is given a low survival rating". Australian Financial Review.
  6. ^ Hart, Jeffrey (1998). "Digital Television in Europe and Japan" (PDF). Prometheus. Vol. 16, no. 2. p. 217.
  7. ^ POST Briefing Note 24 - High Definition TV (PDF). Parliamentary Office of Science and Technology. April 1991.