Bibliographic data

Document DE000019930908A1 (Pages: 4)

Bibliographic data Document DE000019930908A1 (Pages: 4)
INID Criterion Field Contents
54 Title TI [DE] Integritätsschutz für elektronische Dokumente
[EN] Integrity protection for electronic document with combination of visible, invisible-robust and invisible non-robust watermarks for on-line verification
71/73 Applicant/owner PA BALTUS RENE, DE
72 Inventor IN BALTUS RENE, DE ; WOOP MARC-BERND, DE
22/96 Application date AD Jul 6, 1999
21 Application number AN 19930908
Country of application AC DE
Publication date PUB Jan 11, 2001
33
31
32		 Priority data PRC
PRN
PRD

51 IPC main class ICM G07C 11/00
51 IPC secondary class ICS G06K 9/24
G06K 9/78
IPC additional class ICA
IPC index class ICI
Cooperative patent classification CPC G03G 21/04
G06T 1/0071
G06T 2201/0064
G06V 40/30
H04N 1/32101
H04N 1/32304
H04N 2201/3233
H04N 2201/3236
H04N 2201/3239
H04N 2201/3269
H04N 2201/327
H04N 2201/3271
MCD main class MCM
MCD secondary class MCS G03G 21/04 (2006.01)
G06K 9/00 (2006.01)
G06T 1/00 (2006.01)
H04N 1/32 (2006.01)
MCD additional class MCA
57 Abstract AB [DE] Es wird ein Verfahren beschrieben, das es erlaubt, die juristisch relevanten Daten einer Unterschrift, die Druck- und Zeitverläufe in Form eines sichtbaren und unsichtbaren digitalen Wasserzeichens in ein elektronisches und papierenes Dokument einzubringen, zu komprimieren und die Komprimate zu vergleichen.
[EN] Procedure allows legally relevant data: a signature, write pressure and write duration for signature to be inserted in electronic document in form of visible and invisible digital watermark. Facsimile of signature is used as visible watermark. Data is also used as invisible-robust and invisible non-robust digital watermarks on document. Document is printed out and signed again, repeat signature is used as new digital watermark.
56 Cited documents identified in the search CT
56 Cited documents indicated by the applicant CT
56 Cited non-patent literature identified in the search CTNP
56 Cited non-patent literature indicated by the applicant CTNP
Citing documents Determine documents
Sequence listings
Search file IPC ICP G06K 9/78 U
G07C 11/00 JU