Editing Improved-definition television

{{one source|date=May 2022}}
'''Improved-definition television''' (IDTV) or '''enhanced-quality television'''<!--EQTV?--> transmitters and receivers exceed the performance requirements of the [[NTSC standard]], while remaining within the general parameters of NTSC emissions standards. 

IDTV improvements may be made at the [[television]] transmitter or receiver. Improvements include enhancements in encoding, [[Digital data|digital]] filtering, scan interpolation, interlaced [[line (video)|line]] scanning, and [[ghost (television)|ghost]] cancellation. 

IDTV improvements must allow the TV [[signal]] to be transmitted and received in the standard 4:3 [[aspect ratio (image)|aspect ratio]].

The only relevant implementation of IDTV for NTSC-based broadcasts before the introduction of [[digital television|full-digital TV distribution]] (DTV) was the Japanese [[Clear-Vision]]. In European countries, [[PALplus]] and [[Multiplexed Analogue Components|MAC]] had a similar role.
The more commonly used term for advanced display technology before the advent of [[high-definition television]] (HDTV) was [[enhanced-definition television]] (EDTV), used for instance for [[plasma display|plasma TV sets]] with a [[16:9 aspect ratio]] in the early 2000s.

==See also==
* [[Comb filter]]
* [[Federal Standard 1037C]]
* [[Video scaler]]

==References==
{{FS1037C}}<!--https://web.archive.org/web/20160320182332/http://atis.org/glossary/definition.aspx?id=4917-->

[[Category:Television technology]]