Data embedding scheme for duplex color laser printer

Facsimile and static presentation processing – Static presentation processing – Attribute control

Reexamination Certificate

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Details

C358S003280, C358S003300, C382S100000, C382S103000, C382S112000, C382S232000

Reexamination Certificate

active

07394567

ABSTRACT:
A data embedding technique that adds a watermark in the form of embedded data in the RGB domain in a duplex color laser printer. The data embedding algorithm employs a two-color (cyan and magenta) patch based coding scheme. Each bit of raw data is coded by a rectangular patch (“data area”) of either cyan or magenta color surrounded by white space (“space area”). The combination of a single data area and corresponding space area is a “data cell”.

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