Title:
PRINTED PAGE TAG ENCODER
Document Type and Number:
WIPO Patent Application WO2001089838
Kind Code:
A9
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 utilises 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.
Inventors:
LAPSTUN PAUL (AU)
WALMSLEY SIMON ROBERT (AU)
WALMSLEY SIMON ROBERT (AU)
Application Number:
PCT/AU2000/000517
Publication Date:
December 15, 2005
Filing Date:
May 24, 2000
Export Citation:
Assignee:
SILVERBROOK RES PTY LTD (AU)
LAPSTUN PAUL (AU)
WALMSLEY SIMON ROBERT (AU)
LAPSTUN PAUL (AU)
WALMSLEY SIMON ROBERT (AU)
International Classes:
B41J3/60; B41J13/10; G03G15/00; B41J21/00; G06F3/042; G06F3/12; G06K15/02; G06K19/06; H04N1/00; H04N1/32; G06K17/00; (IPC1-7): B41J2/04; H04N1/40; G06K19/06
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