Paper making and fiber liberation – Processes and products – Non-uniform – irregular or configured web or sheet
Reexamination Certificate
2006-05-22
2008-09-23
Hug, Eric (Department: 1791)
Paper making and fiber liberation
Processes and products
Non-uniform, irregular or configured web or sheet
C162S116000, C162S348000, C162S357000, C162S362000, C382S108000, C382S285000
Reexamination Certificate
active
07427334
ABSTRACT:
The present invention provides methods and apparatus to encode substrates (e.g., paper, synthetics, etc.) with information. In one implementation a method is provided including: receiving data that corresponds to a two-dimensional signal that encodes plural bits of data; receiving data that corresponds to a frequency-domain signal, the data corresponding to a representation in a spatial domain through inverse transforming the frequency-domain signal; and defining characteristics for an element of a substrate-making process, the characteristics including at least a pattern representing the spatial domain representation and the two-dimensional signal.
REFERENCES:
patent: 4234214 (1980-11-01), Lee
patent: 4971646 (1990-11-01), Schell et al.
patent: 5062666 (1991-11-01), Mowry et al.
patent: 5291243 (1994-03-01), Heckman et al.
patent: 5495581 (1996-02-01), Tsai
patent: 5521722 (1996-05-01), Colvill et al.
patent: 5583950 (1996-12-01), Prokoski
patent: 5721583 (1998-02-01), Harada et al.
patent: 5817205 (1998-10-01), Kaule
patent: 5871615 (1999-02-01), Harris
patent: 6148091 (2000-11-01), DiMaria
patent: 6166750 (2000-12-01), Negishi
patent: 6709333 (2004-03-01), Bradford et al.
patent: 6711465 (2004-03-01), Tomassi
patent: 6748533 (2004-06-01), Wu et al.
patent: 6926203 (2005-08-01), Sehr
patent: 6999936 (2006-02-01), Sehr
patent: 7024563 (2006-04-01), Shimosato et al.
patent: 7167844 (2007-01-01), Leong et al.
Szepanski, W., “A Signal Theoretic Method for Creating Forgery-Proof Documents for Automatic Verfication”, 1979 Carnahan Conference on Crime Countermeasures, May 16-18, 1997, pp. 101-109.
Digimarc Corporation
Hug Eric
LandOfFree
Method and apparatus for encoding substrates with information does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for encoding substrates with information, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for encoding substrates with information will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3973083