Interlaced scan is a technique used in video display technology to enhance the quality of images. It works by dividing each frame into two fields: one containing the odd lines and the other containing the even lines. This method allows for smoother motion and reduces flicker, making it particularly useful for displaying fast-moving images. In television broadcasting, interlaced scanning was commonly used in older formats, such as NTSC and PAL. While it improves perceived image quality, it can also lead to artifacts like combing during fast motion. Modern displays often use progressive scan for better clarity and detail.