US6850626B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods employing multiple watermarks
Assignee: Digimarc Corp
•
Filing: 2002-03-28
•
Granted: 2005-02-01
•
Expires: 2022-03-28
Abstract
Abstract Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the frail watermark unreadable), permitting an original object to be distinguished from a processed object. Appropriate action can then taken in response thereto.
Inventors
- 👤 Geoffrey B. Rhoads
- 👤 Ammon E. Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:35
CPC Classifications
G; G06; G06Q; G06Q30/00; G06Q30/02; B; B42; B42D; B42D25/00; B42D25/20; B42D25/29; G06T; G06T1/00; G06T1/0021; G06T1/005; G06T1/0071; G06T7/00; G06T7/0002; G07; G07D; G07D7/00; G07D7/003; G07D7/0034; G07D7/004; H; H04; H04N; H04N1/00; H04N1/00002; H04N1/00005; H04N1/00026; H04N1/00037; H04N1/00092; H04N1/00962; H04N1/00973; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32203; H04N1/32219; H04N1/32229; H04N1/32261; H04N1/32288; H04N1/32304; H04N1/32309; H04N1/3232; H04N1/32331; B29; B29C; B29C45/00; B29C45/14; B29C45/1418; G06T2207/00; G06T2207/30; G06T2207/30108; G06T2207/30144; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3204; H04N2201/3205; H04N2201/3207; H04N2201/3225; H04N2201/3226; H04N2201/3233; H04N2201/3239; H04N2201/3269; H04N2201/327; H04N2201/3271
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
97 words
A watermarking method to mark a security document comprising: receiving first information; receiving second information; embedding the first information as a first digital watermark in data representing a first portion of the security document; embedding the second information as a second digital watermark in data representing a second portion of the security document, wherein an original security document comprises both a first digital watermark and a second digital watermark, and wherein the first and second watermarks are provided so as to each react in a different manner when the security document is subjected to a predetermined process.
Claim 2
Dependent Claim
97 words
A watermarking method to mark a security document comprising: receiving first information; receiving second information; embedding the first information as a first digital watermark in data representing a first portion of the security document; embedding the second information as a second digital watermark in data representing a second portion of the security document, wherein an original security document comprises both a first digital watermark and a second digital watermark, and wherein the first and second watermarks are provided so as to each react in a different manner when the security document is subjected to a predetermined process.
Claim 3
Dependent Claim
23 words
The method of claim 1 in which the first watermark is designed to withstand a predetermined process, and the second watermark is not.
Claim 4
Dependent Claim
12 words
The method of claim 2 in which the predetermined process includes scanning.
Claim 5
Dependent Claim
12 words
The method of claim 2 in which the predetermined process includes printing.
Claim 6
Dependent Claim
12 words
The method of claim 2 in which the predetermined process includes distortion.
Claim 7
Dependent Claim
13 words
The method of claim 1 in which the security document comprises an image.
Claim 8
Dependent Claim
17 words
The method of claim 6 in which the security document comprises a document printed with said image.
Claim 9
Dependent Claim
35 words
The method of claim 1 that further includes analyzing a suspect document for the presence of the second watermark, the absence of said second watermark indicating that the suspect document is not an original document.
Claim 10
Dependent Claim
31 words
The method of claim 1 in which the document includes plural data samples, each sample having a value, and the watermarking changes the values of at least certain of said samples.
Claim 11
Dependent Claim
11 words
The method of claim 9 in which said samples comprises pixels.
Claim 12
Dependent Claim
24 words
The method of claim 9 wherein the watermarking of at least the first watermark is effected by slight alterations to the sampled data's color.
Claim 13
Dependent Claim
33 words
The method of claim 11 in which the first watermark is designed to withstand a predetermined process, and the second watermark is not, wherein the predetermined process comprises at least scanning and reprinting.
Claim 14
Dependent Claim
35 words
A security document provide according to claim 1 , wherein at least a portion of one of the first digital watermark and the second digital watermark is provided on the security document with photoluminescent ink.
Claim 15
Dependent Claim
15 words
The security document of claim 13 wherein the predetermined process comprises exposure to non-visible light.
Claim 16
Dependent Claim
13 words
The security document of claim 13 wherein the predetermined process comprises optical scanning.
Claim 17
Dependent Claim
34 words
A security document according to claim 1 , wherein at least a portion of one of the first digital watermark and the second digital watermark is provided on the security document with fluorescing ink.
Claim 18
Dependent Claim
15 words
The security document of claim 16 wherein the predetermined process comprises exposure to non-visible light.
Claim 19
Dependent Claim
13 words
The security document of claim 16 wherein the predetermined process comprises optical scanning.
Claim 20
Dependent Claim
14 words
The method of claim 1 , wherein the predetermined process comprises exposure to light.
Claim 21
Independent Claim
93 words
A method of marking an object comprising: receiving first information; receiving second information; embedding the first information with a first digital watermark in data representing a first portion of the object; embedding the second information with a second digital watermark in data representing a second portion of the object, wherein at least portions of the first and second watermarks are to be provided with a first ink and a second different ink, respectively, so that the first and second watermarks react in different manners when the object is subjected to a predetermined process.
Claim 22
Independent Claim
93 words
A method of marking an object comprising: receiving first information; receiving second information; embedding the first information with a first digital watermark in data representing a first portion of the object; embedding the second information with a second digital watermark in data representing a second portion of the object, wherein at least portions of the first and second watermarks are to be provided with a first ink and a second different ink, respectively, so that the first and second watermarks react in different manners when the object is subjected to a predetermined process.
Claim 23
Dependent Claim
42 words
A method comprising: receiving data including the first digital watermark and the second digital watermark of claim 20 ; providing at least portions of the first and second watermarks on an object with a first ink and a second different ink, respectively.
Claim 24
Dependent Claim
14 words
The method of claim 20 wherein the predetermined process comprises exposure to non-visible light.
Claim 25
Dependent Claim
14 words
The method of claim 20 wherein the predetermined process comprises optical scanning and printing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-02-01 | 2008-08-02 | 2009-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-02-01 | 2012-08-02 | 2013-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-02-01 | 2016-08-02 | 2017-02-01 | $7700.00 | Window Closed / Lapsed |