Usage in TVs, Video Projectors, and Monitors
Progressive scan is used for most Cathode ray tube (CRT) computer monitors, all LCD computer monitors, and most HDTVs as the display resolutions are progressive by nature. Other CRT-type displays, such as SDTVs, typically display interlaced video only.
Some TVs and most video projectors have one or more progressive scan inputs. Before HDTV became common, some high end displays supported 480p (480 horizontal lines of resolution with progressive scan). This allowed these displays to be used with devices that output progressive scan like progressive scan DVD players and certain video game consoles. HDTVs support the progressively scanned resolutions of 480p and 720p. 1080p displays are available but are usually more expensive than the comparable lower resolution HDTV models. Computer monitors can use even greater display resolutions.
The disadvantage of progressive scan is that it requires higher bandwidth than interlaced video that has the same frame size and vertical refresh rate. For explanations of why interlacing was originally used, see interlaced video. For an in-depth explanation of the fundamentals and advantages/disadvantages of converting interlaced video to a progressive format, see deinterlacing.
Read more about this topic: Progressive Scan
Famous quotes containing the words usage, video and/or monitors:
“...Often the accurate answer to a usage question begins, “It depends.” And what it depends on most often is where you are, who you are, who your listeners or readers are, and what your purpose in speaking or writing is.”
—Kenneth G. Wilson (b. 1923)
“These people figured video was the Lord’s preferred means of communicating, the screen itself a kind of perpetually burning bush. “He’s in the de-tails,” Sublett had said once. “You gotta watch for Him close.””
—William Gibson (b. 1948)
“To anybody who can hold the Present at its worth without being inappreciative of the Past, it may be forgiven, if to such an one the solitary old hulk at Portsmouth, Nelson’s Victory, seems to float there, not alone as the decaying monument of a fame incorruptible, but also as a poetic approach, softened by its picturesqueness, to the Monitors and yet mightier hulls of the European ironclads.”
—Herman Melville (1819–1891)