Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1994-06-17
1996-05-21
Groody, James J.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348220, H04N 5213
Patent
active
055194524
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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Eastman Kodak Company
Groody James J.
Murrell Jeffrey S.
Woods David M.
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