SINGLE-COLOR SCREEN PATTERNS FOR COPY PROTECTION

A verifiable/copy-protected document features a combination of nearly identical line-screen patterns for embedding latent images within visually integrated settings. The latent images can be detected for purposes of verification with a matching viewer but are indistinguishable from their visually in...

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Hauptverfasser:	WICKER, DAVID M, WICKER, THOMAS M, CATON, MICHAEL SCOTT
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BOOK COVERS BOOKBINDING COLOUR PRINTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FILES LINING MACHINES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SPECIAL PRINTED MATTER STAMPS TRANSPORTING TYPEWRITERS
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creator	WICKER, DAVID M WICKER, THOMAS M CATON, MICHAEL SCOTT
description	A verifiable/copy-protected document features a combination of nearly identical line-screen patterns for embedding latent images within visually integrated settings. The latent images can be detected for purposes of verification with a matching viewer but are indistinguishable from their visually integrated settings under ordinary viewing conditions. The line-screen patterns, which can be incorporated into document artwork, are printed at certain combinations of line frequencies and print densities so that the line-screen patterns digitally reproduce as a largely undifferentiated solid tint. L'invention concerne un document vérifiable/protégé en copie qui présente une combinaison de motifs de trame lignée presque identiques pour incorporer des images latentes dans des emplacements visuellement intégrés. Les images latentes peuvent être détectées à des fins de vérification avec un visualiseur de correspondance mais ne peuvent pas être distinguées de leurs emplacements visuellement intégrés dans des conditions de visualisation ordinaires. Les motifs de trame lignée, qui peuvent être incorporés dans une maquette de document, sont imprimés à certaines combinaisons de fréquences de ligne et de densités d'impression de telle sorte que les motifs de trame lignée se reproduisent numériquement en tant que teinte en aplat largement indifférenciée.
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Les motifs de trame lignée, qui peuvent être incorporés dans une maquette de document, sont imprimés à certaines combinaisons de fréquences de ligne et de densités d'impression de telle sorte que les motifs de trame lignée se reproduisent numériquement en tant que teinte en aplat largement indifférenciée.</description><language>eng ; fre</language><subject>BOOK COVERS ; BOOKBINDING ; COLOUR PRINTING ; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; FILES ; LINING MACHINES ; LOOSE LEAVES ; MOVABLE-STRIP WRITING OR READING APPARATUS ; PERFORMING OPERATIONS ; PICTORIAL COMMUNICATION, e.g. TELEVISION ; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES ; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR ; PRINTING ; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES ; SPECIAL PRINTED MATTER ; STAMPS ; TRANSPORTING ; TYPEWRITERS</subject><creationdate>2009</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090219&DB=EPODOC&CC=WO&NR=2009023834A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090219&DB=EPODOC&CC=WO&NR=2009023834A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WICKER, DAVID M</creatorcontrib><creatorcontrib>WICKER, THOMAS M</creatorcontrib><creatorcontrib>CATON, MICHAEL SCOTT</creatorcontrib><title>SINGLE-COLOR SCREEN PATTERNS FOR COPY PROTECTION</title><description>A verifiable/copy-protected document features a combination of nearly identical line-screen patterns for embedding latent images within visually integrated settings. 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language	eng ; fre
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subjects	BOOK COVERS BOOKBINDING COLOUR PRINTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FILES LINING MACHINES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SPECIAL PRINTED MATTER STAMPS TRANSPORTING TYPEWRITERS
title	SINGLE-COLOR SCREEN PATTERNS FOR COPY PROTECTION
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