Interlaced Scan

A common method for displaying a video image on an electronic display screen by scanning each line or row of pixels. This technique uses two fields to create a frame. One field contains all the odd lines in the image, the other contains all the even lines of the image.

Interlacing is used by all the analogue TV broadcast systems in current use. In NTSC countries (North and parts of South America, Japan), 480i is the standard-definition interlaced video, whilst in PAL and SECAM countries (Europe and Australia), 576i is used. 1080i is a high-definition television (HDTV) video mode.

See also Progressive Scan.