Variable-dot halftoning

Details Variable-dot halftoning Variable-dot halftoning

2007-03-27

2010-11-02

Thompson, James A (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003140, C358S003230, C358S003240

Reexamination Certificate

active

07826099

ABSTRACT:
A method for enabling a program that communicates a document description from a composition system to a printing system to manage variable-dot halftones for use with variable-dot printing devices, comprising the steps of creating a set of strings, each string defining a halftone cell intensity value and comprising at least one pixel imbution value, wherein said pixel imbution value is in the range of 0 to P, wherein P is the number of physical appearances that a painted pixel can have; using a selected halftone cell intensity value to directly choose a string from said set of strings; and painting at least one pixel within a halftone cell according to a pixel imbution value within the chosen string.

REFERENCES:
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patent: 6982722 (2006-01-01), Alben et al.
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patent: 7586648 (2009-09-01), Evans et al.
patent: 2005/0179949 (2005-08-01), Hagai
patent: 0650289 (1995-04-01), None
patent: 92/01353 (1992-01-01), None
European Search Report for related application EP 05 29 2262.

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