Computer graphics processing and selective visual display system – Computer graphics processing – Shape generating
Reexamination Certificate
2006-09-05
2009-06-30
Chang, Kent (Department: 4175)
Computer graphics processing and selective visual display system
Computer graphics processing
Shape generating
C345S443000
Reexamination Certificate
active
07554548
ABSTRACT:
The gamma curve generation method of the invention selects each set of three consecutive control points among multiple consecutive control points, forms a cubic curve passing through the selected three consecutive control points, and combines all formed cubic curves to generate a gamma curve. The selected three consecutive control points are set to a first control point, a second control point, and a third control point in a sequential order. Each cubic curve is formed to pass through the first control point, the second control point, and the third control point and have a tangent of a certain gradient at the second control point, which is internal division at an inverse ratio of a gradient of a straight line connecting the first control point with the second control point and a gradient of a straight line connecting the second control point with the third control point. This arrangement of the invention demands the less amount of computation and desirably reduces the required circuit scale.
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Chang Kent
Oliff & Berridg,e PLC
Seiko Epson Corporation
Sonners Scott E
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