progressive scan: Im interlaced scanning (see interlaced scanning) with the one PAL- Or NTSCimage is displayed (see PAL / NTSC), the electron beam only ever describes every second physical screen line at a time. However, due to the relatively high refresh rate, the eye perceives this as one image. However, some flickering results from this technique.
Progressive scan accelerates the electron beam and sequentially scans it row describe after the other. This significantly increases the image quality. Many DVD-Player can a progressive Signal spend. However, playback requires that the display device (television or projector) supports the high Horizontal frequency can process.