Also known as progressive, this term refers to the way a video image is displayed on screen where each line of a frame (one complete video image) is drawn on screen one after the other (one, two, three, four, five, and so on). This method of displaying a video image is in contrast to interlaced images that draw all the odd lines and then all the even lines in two separate fields to create the final frame or complete image. nterlaced video draws lines one, three, five, seven and so on until there are no more odd numbered lines. In that format, the even lines are then drawn two, four, six, eight, and so on. Interlaced video is used for the NTSC analog television standard thanks to its bandwidth savings (every 1/60 second a field is drawn resulting in a full frame every 1/30 second – if the non-interlaced format was used, a complete image would be drawn every 1/60 second thus requiring more bandwidth to carry the signal). However, progressive or non-interlaced video produces a higher quality image. Interlaced video suffers from flicker problems due to the full image not being displayed and from alignment problems where the odd lines do not exactly line up with the even lines. Alignment problems can be particularly bad in video containing fast moving images. Additionally, since fewer lines are projected at any given time using the interlaced format, there is a subjective degradation of picture quality and resolution compared to non-interlaced video. any computer monitors use non-interlaced video. The digital television standard uses both interlaced and non-interlaced video among its different formats with the highest resolution format (1,080 by 1,920 pixels) being interlaced.