Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1991-10-24
1994-10-11
Powell, Mark R.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348452, 360 351, H04N 5262
Patent
active
053551788
ABSTRACT:
An image motion-dependent mechanism selectively inserts an image modification operator, such as a median filter, into the image signal path of a video display unit, so that loss of definition and introduction of flicker resulting from the use of a median filter in the course of the display of a still or stationary image on an IDTV are effectively eliminated. The selectively inserted image modification operator, which responds to an index code or bit value representative of whether or not the image frame is repeated, may also serve to prevent the generation of cross-luminance and cross-color decoding artifacts, as well as reducing the amount of random noise in the image.
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Patent Application 583, 265, Docket Number 59,557 by Ed Dugas.
Eastman Kodak Company
Murrell Jeffrey S.
Powell Mark R.
Woods David M.
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