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Burn-in on a monitor, when severe as in this "please wait" message, is visible even when the monitor is switched off. Screen burn-in, image burn-in, ghost image, or shadow image, is a permanent discoloration of areas on an electronic visual display such as a cathode-ray tube (CRT) in an older computer monitor or television set.
A simulated example of severe ghosting in an analog TV broadcast. In television, a ghost is a replica of the transmitted image, offset in position, that is superimposed on top of the main image. It is often caused when a TV signal travels by two different paths to a receiving antenna, with a slight difference in timing. [1]
Ghosting is a form of television interference where an image is repeated. Though this is not ringing, it can be interpreted as convolution with a function, which is 1 at the origin and ε (the intensity of the ghost) at some distance, which is formally similar to the above functions (a single discrete peak, rather than continuous oscillation).
Image persistence can occur as easily as having something remain unchanged on the screen in the same location for a duration of even 10 minutes, such as a web page or document. Minor cases of image persistence are generally only visible when looking at darker areas on the screen, and usually invisible to the eye during ordinary computer use.
Ghost-canceling reference (GCR) is a special sub-signal on a television channel that receivers can use to compensate for the ghosting effect of a television signal distorted by multipath propagation between transmitter and receiver.
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Ghost image may refer to: An image of a ghost. Spirit photography, an attempt to capture an image of a ghost; Afterimage, an image that continues to appear in the eyes after exposure has ceased; Ghosting (television), an offset replica of a transmitted image in an analogue broadcast; Image persistence, the temporary retention of a picture on ...