Fluorescent color scanning method for use in a scanner

Details Fluorescent color scanning method for use in a scanner Fluorescent color scanning method for use in a scanner

2008-01-29

2008-01-29

Poon, King Y. (Department: 2625)

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

C382S167000, C382S273000, C382S274000, C382S318000

Reexamination Certificate

active

10699931

ABSTRACT:
A fluorescent color scanning method is disclosed to include the steps of: scanning a standard white to obtain a first reference white W1; reducing the scanning brightness and then scanning the standard white to obtain a second reference white W2; using the first reference white and second reference white to scan every scanning document and then storing the respective scanning results Pm and Qm; and comparing Qm to W2so as to determine if the document contains a fluorescent color or not subject to: (i) determining that the document contains a fluorescent color if Qm>W2, and then converting Qm into the accurate color output Om; and (ii) determining that the document contains no fluorescent color if Qm≦W2and then using the value of Pm as the image output value.

REFERENCES:
patent: 5453850 (1995-09-01), Akuzawa et al.
patent: 6486974 (2002-11-01), Nakai et al.
patent: 2002/0002410 (2002-01-01), Tomita et al.
patent: 2003/0039359 (2003-02-01), Thierauf

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