Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1992-12-18
1994-01-11
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358448, 358455, 358462, H04N 1387, H04N 140
Patent
active
052786706
ABSTRACT:
An image processing system for preparing a document for printing, receives document images containing pictures and text at a first resolution which cannot be rendered by a selected printer. In such a system, there is provided an arrangement for determining the presence or absence of a constant gray level over a small area of the document in each separation, and among the separations. Subsequent to such determination, a control signal representing the determination is produced that provides a selection of resolution conversion functions, one of which preserves gray density, and the other of which does not.
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Coles Sr. Edward L.
Costello Mark
Grant II Jerome
Xerox Corporation
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