Patent US6636615B1 successfully refreshed from Google Patents.
US6636615B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and systems using multiple watermarks
Assignee: Digimarc Corp
•
Filing: 1999-11-03
•
Granted: 2003-10-21
•
Expires: 2019-11-03
Abstract
Abstract Two or more digital watermarks, with different characteristics, are embedded in a document. The characteristics are chosen so that the watermarks will be affected in different manners if the document is subsequently copied or reproduced. The detection process or mechanism reads two or more of the watermarks and compares their characteristics. While wear and handling may change the characteristics of the digital watermarks in a document, the relationship between the characteristics of the multiple digital watermarks in a document will nevertheless give an indication as to whether a document is an original or a copy of an original. Document wear can be independently assessed and used as an aid in interpreting the detected watermark characteristics.
Inventors
- 👤 Geoffrey B. Rhoads
- 👤 Ammon E. Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:37
CPC Classifications
G; G06; G06T; G06T7/00; G06T7/0002; G06T1/00; G06T1/0021; G06T1/005; G06T1/0071; G06T7/0004; G07; G07C; G07C9/00; G07C9/20; G07C9/22; G07C9/25; G07C9/253; G07F; G07F7/00; G07F7/08; G07F7/086; G07F7/12; G10; G10L; G10L19/00; G10L19/018; H; H04; H04N; H04N1/00; H04N1/00002; H04N1/00005; H04N1/00026; H04N1/00037; H04N1/00092; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32288; H04N1/32304; H04N1/32309; G06T2201/00; G06T2201/005; G06T2201/0052; G06T2207/00; G06T2207/30; G06T2207/30108; G06T2207/30144; G11; G11B; G11B20/00; G11B20/00086
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
58 words
A method comprising: sensing a first parameter related to a first digital watermark in a document; sensing a second parameter related to a second digital watermark in the document; sensing a third parameter related to wear of the document; and by reference to said first, second and third parameters, assessing whether the document is likely an original document.
Claim 2
Independent Claim
58 words
A method comprising: sensing a first parameter related to a first digital watermark in a document; sensing a second parameter related to a second digital watermark in the document; sensing a third parameter related to wear of the document; and by reference to said first, second and third parameters, assessing whether the document is likely an original document.
Claim 3
Dependent Claim
41 words
A document including a substrate with printing thereon, the printing comprising at least first and second steganographic watermarks, wherein the first and second steganographic watermarks are designed to change differently when the document is subjected to first and second corruption processes.
Claim 4
Dependent Claim
41 words
A document including a substrate with printing thereon, the printing comprising at least first and second steganographic watermarks, wherein the first and second steganographic watermarks are designed to change differently when the document is subjected to first and second corruption processes.
Claim 5
Dependent Claim
31 words
The document of claim 2 where the document is one of the group consisting of a product label, a product tag, product packaging, a banknote, a coupon, and a food stamp.
Claim 6
Dependent Claim
22 words
The document of claim 2 in which the first corruption process includes wear, and the second corruption process includes scanning and printing.
Claim 7
Independent Claim
67 words
A method comprising: sensing a first parameter related to a first digital watermark from a document; sensing a second parameter related to a second digital watermark from the document; and by reference to at least the first and second parameters, assessing whether the document is likely an original document, wherein the first and second digital watermarks are designed to change differently when subjected to a corruption process.
Claim 8
Independent Claim
67 words
A method comprising: sensing a first parameter related to a first digital watermark from a document; sensing a second parameter related to a second digital watermark from the document; and by reference to at least the first and second parameters, assessing whether the document is likely an original document, wherein the first and second digital watermarks are designed to change differently when subjected to a corruption process.
Claim 9
Independent Claim
80 words
A method comprising: sensing a first parameter related to a first digital watermark from a document; sensing a second parameter related to a second digital watermark from the document; sensing a third parameter related to wear of the document; and by reference to said first, second and third parameters, assessing whether the document is likely an original document, wherein sensing of the first and second parameters comprises visible light scanning of the document to retrieve the first and second parameters.
Claim 10
Independent Claim
80 words
A method comprising: sensing a first parameter related to a first digital watermark from a document; sensing a second parameter related to a second digital watermark from the document; sensing a third parameter related to wear of the document; and by reference to said first, second and third parameters, assessing whether the document is likely an original document, wherein sensing of the first and second parameters comprises visible light scanning of the document to retrieve the first and second parameters.
Claim 11
Independent Claim
79 words
A method comprising: sensing a first parameter related to a first digital watermark from a document; sensing a second parameter related to a second digital watermark from the document; and by reference to at least the first and second parameters, assessing whether the document is likely an original document, wherein the first digital watermark comprises a relatively higher likelihood of withstanding a corruption operation, while the second digital watermark comprises a relatively lower likelihood of withstanding the corruption operation.
Claim 12
Independent Claim
79 words
A method comprising: sensing a first parameter related to a first digital watermark from a document; sensing a second parameter related to a second digital watermark from the document; and by reference to at least the first and second parameters, assessing whether the document is likely an original document, wherein the first digital watermark comprises a relatively higher likelihood of withstanding a corruption operation, while the second digital watermark comprises a relatively lower likelihood of withstanding the corruption operation.
References Cited (Backward Citations)
US3984624A
Cited
US4210346A
Cited
US4238849A
Cited
US4379947A
Cited
US4296326A
Cited
US4313197A
Cited
US4528588A
Cited
US4395600A
Cited
US4380027A
Cited
US4367488A
Cited
US4425642A
Cited
US4547804A
Cited
US4908873A
Cited
US4675746A
Cited
US4723072A
Cited
US4672605A
Cited
US4750173A
Cited
US4855827A
Cited
US4807031A
Cited
US5146457A
Cited
US4969041A
Cited
US4908836A
Cited
US5216724A
Cited
US5521722A
Cited
US5354097A
Cited
US5719939A
Cited
US5243423A
Cited
US5284364A
Cited
US5809160A
Cited
US5721788A
Cited
US5751854A
Cited
US5502576A
Cited
US5652626A
Cited
EP0642060A2
Cited
US5862260A
Cited
US5768426A
Cited
US5488664A
Cited
US5493677A
Cited
US5617119A
Cited
US5893101A
Cited
US6285776B1
Cited
US5663766A
Cited
US5530759A
Cited
US6185683B1
Cited
US5598526A
Cited
US5636292A
Cited
US5636292C1
Cited
US5687236A
Cited
US6122403A
Cited
US20020009208A1
Cited
US5930369A
Cited
US5905800A
Cited
US5664018A
Cited
US5673316A
Cited
US5819289A
Cited
US5862218A
Cited
US5822436A
Cited
WO1997043736A1
Cited
US5974548A
Cited
US5933798A
Cited
US6226387B1
Cited
US6272634B1
Cited
US5825892A
Cited
US20010021144A1
Cited
US5875249A
Cited
US6233684B1
Cited
US5898779A
Cited
US6334187B1
Cited
US20010052076A1
Cited
US20020015509A1
Cited
US5949055A
Cited
WO1999036876A2
Cited
US6332031B1
Cited
US6064764A
Cited
US6314192B1
Cited
US6233347B1
Cited
US6332194B1
Cited
US20010020270A1
Cited
US6272176B1
Cited
US6275599B1
Cited
US6285775B1
Cited
US5991426A
Cited
WO2000044131A1
Cited
US6246777B1
Cited
WO2001005075A1
Cited
EP1077570A2
Cited
WO2001039121A1
Cited
US20020010684A1
Cited
WO2001080169A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-10-20 | 2007-04-21 | 2007-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-10-20 | 2011-04-21 | 2011-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-10-20 | 2015-04-21 | 2015-10-21 | $7700.00 | Window Closed / Lapsed |