Computer graphics processing and selective visual display system – Computer graphics processing – Animation
Reexamination Certificate
2004-02-17
2008-10-07
Tung, Kee M. (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Animation
C345S611000, C345S589000, C382S300000
Reexamination Certificate
active
07432931
ABSTRACT:
An apparatus for processing an image signal prevents burn-in of display devices such as a PDP and an LCD. A number-of-pixels conversion section generates pixel data located at interpolation positions in horizontal or vertical directions based on information about the interpolation positions obtained from a controller, to obtain an image signal in which the number of pixels is converted. A panel driver shifts the display position of an image in a PDP in the horizontal or vertical directions by as much as one pixel, each time a predetermined period of time elapses, within a predetermined range based on information about the display position obtained from the controller in order to prevent a screen from being burned-in. The controller changes the phase of each of the interpolation positions in a change unit smaller than 360° for a period of time when the display position of the image is shifted by as much as one pixel, the interval between the interpolation positions being set to 360°. This allows the shift distance of the image in every shift to be shorter than the distance between the pixels, thereby allowing any unpleasant visual feeling due to the image movement to be mitigated.
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Someya Ikuo
Yamamura Koji
Amin Jwalant
Lerner David Littenberg Krumholz & Mentlik LLP
Sony Corporation
Tung Kee M.
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