Method and apparatus for processing of half-tone image

Details Method and apparatus for processing of half-tone image Method and apparatus for processing of half-tone image

2008-07-01

2008-07-01

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060

Reexamination Certificate

active

10947657

ABSTRACT:
In the present invention, in an image output apparatus having a specific resolution, a micro normal random number or a blue noise is synthesized in threshold matrix having a plurality of half-tone centers, having an equal interval between half-tone centers in most vicinity, and having lattice elements addressable at a rational tangent angle, wherein a growth order among half-tones is defined in a defined periodic order.

REFERENCES:
patent: 5155599 (1992-10-01), Delabastita
patent: 5588094 (1996-12-01), Kroon
patent: 6714320 (2004-03-01), Nakahara et al.
patent: 2003/0197878 (2003-10-01), Metois et al.
patent: 2005/0275898 (2005-12-01), Nguyen et al.
patent: 2003-234900 (2003-08-01), None
U.S. Appl. No. 09/595,052, filed Jun. 14, 2000, Nakahara et al.

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