Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2006-08-29
2006-08-29
Lee, Thomas D. (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C382S237000
Reexamination Certificate
active
07099049
ABSTRACT:
A stochastic screening mask is provided for rendering halftone images. A filter controlled force masking method is used to vary the mask patterns from regularity to randomness. Dot size (amplitude), dot number (frequency), and dot shape are modulated integrally at each gray level during the generation of the mask. The single pixel limit for blue noise masking is broken down by this approach. The halftone patterns generated with this method can have visually pleasing blue noise attribute. This new screening method would provide flexible solutions for different types of printing processes.
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Andree Fred W.
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Yu Shenbo
Brinich Stephen
Lahive & Cockfield LLP
Lee Thomas D.
Zoran Corporation
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