Interlaced Scan

Definition: Interlaced scan refers to a video image that is displayed on a screen by scanning or displaying each line (or row of pixels) that make up the image, in an alternate order. In other words, the image lines (or pixel rows) are scanned down the screen from top to bottom, in an alternate order (lines or rows 1,3,5, etc... followed by lines or rows 2,4,6). The entire image is displayed every 30th of a second.