Flicker is a visible fading between cycles displayed on which type of displays, especially the refresh interval on Cathode ray tube televisions and computer monitors as well as Plasma based computer screens and/or Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in color, and in two or three dimensions and sound?
Flicker (screen) Flicker is a visible fading between cycles displayed on video displays, especially the refresh interval on Cathode ray tube televisions and computer monitors as well as Plasma based computer screens and/or TVs. Flicker occurs on CRTs when they are driven at a low refresh rate, allowing the brightness to drop for time intervals sufficiently long to be noticed by a human eye – see persistence of vision and flicker fusion threshold. For most devices, the screen's phosphors quickly lose their excitation between sweeps of the electron gun, and the afterglow is unable to fill such gaps – see phosphor persistence. A similar effect occurs in PDPs during their refresh cycles.
720p 720p (1280×720 px; also called HD ready) is a progressive HDTV signal format with 720 horizontal lines and an aspect ratio (AR) of , normally known as widescreen HDTV (1.78:1). All major HDTV broadcasting standards (such as SMPTE 292M) include a 720p format which has a resolution of 1280×720; however, there are other formats, including HDV Playback and AVCHD for camcorders, which use 720p images with the standard HDTV resolution. The frame rate is standards-dependent, and for conventional broadcasting appears in 50 progressive frames per second in former PAL/SECAM countries (Europe, Australia, others), and 59.94 frames per second in former NTSC countries (North America, Japan, Brazil, others).