Editing Display resolution (section)

==Aspects==
{{Unreferenced section|date=May 2023}}
[[File:Fatty watching himself on TV.jpg|thumb|right|A 16:9-ratio television from October 2004]]
[[File:MacBookEeePCNintendoDS.JPG|thumb|right|Difference between screen sizes in some common devices, specifically a [[Nintendo DS Lite]], an [[Asus Eee PC]], and an [[MacBook (2006–2012)|Apple MacBook]].]]

=== Overscan and underscan ===
{{Main|Overscan}}

Most television display manufacturers "overscan" the pictures on their displays (CRTs and PDPs, LCDs etc.), so that the effective on-screen picture may be reduced from {{resx|720|576}}&nbsp;(480) to {{resx|680|550}}&nbsp;(450), for example. The size of the invisible area somewhat depends on the display device. Some HD televisions do this as well, to a similar extent.

Computer displays including projectors generally do not overscan although many models (particularly CRT displays) allow it. CRT displays tend to be underscanned in stock configurations, to compensate for the increasing distortions at the corners.

=== Interlaced versus progressive scan ===
[[Interlaced video]] (also known as '''interlaced scan''') is a technique for doubling the perceived [[frame rate]] of a video display without consuming extra [[Bandwidth (signal processing)|bandwidth]]. The interlaced signal contains two [[Field (video)|fields]] of a video frame captured consecutively. This enhances motion perception to the viewer, and reduces [[Flicker (screen)|flicker]] by taking advantage of the [[phi phenomenon]].

The [[European Broadcasting Union]] has argued against interlaced video in production and broadcasting. The main argument is that no matter how complex the deinterlacing algorithm may be, the artifacts in the interlaced signal cannot be completely eliminated because some information is lost between frames. Despite arguments against it, television standards organizations continue to support interlacing. It is still included in digital video transmission formats such as [[DV (video format)|DV]], [[DVB]], and [[ATSC]]. New video compression standards like [[High Efficiency Video Coding]] are optimized for [[progressive scan]] video, but sometimes do support interlaced video.

[[Progressive scanning]] (alternatively referred to as '''noninterlaced scanning''') is a format of displaying, storing, or transmitting [[moving image]]s in which all the lines of each [[Film frame|frame]] are drawn in sequence. This is in contrast to [[interlaced video]] used in traditional [[analog television]] systems where only the odd lines, then the even lines of each frame (each image called a [[video field]]) are drawn alternately, so that only half the number of actual image frames are used to produce video.