Printed page tag encoder

Details Printed page tag encoder Printed page tag encoder

2006-07-04

2006-07-04

Frech, Karl D. (Department: 2876)

Registers

Record controlled calculators

With printing

C235S494000, C235S491000, C235S455000, C358S001100, C358S001500, C358S001140, C358S001170, C382S100000, C382S240000, C375S140000

Reexamination Certificate

active

07070098

ABSTRACT:
A tag encoder for producing tags to be incorporated into a printed page is disclosed. The tag encoder has an input to receive a tag structure template, an input to receive fixed data bits, an input to receive variable data bit records and a tag generator outputting single bits depending on the position in the tag defined by the tag structure template and the fixed and variable data bits. The encoder has a redundancy encoder which utilizes Reed-Solomon encoding. The tag encoder is present in a printer. In addition to the tag encoder, the printer has a contone image decoder to decode compressed continuous tone image planes and a bi-level decoder to decode any compressed bi-level image plane in the compressed data. These decoded image planes are combined with the output of the tag encoder in a halftoner/compositor to produce a printed page carrying tagged areas. The tags are printed in ink which is invisible to the human eye. Such inks, could be IR or UV absorptive.

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