Patent US1625354A successfully refreshed from Google Patents.
US6519352B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encoding and decoding in accordance with steganographically-conveyed data
Assignee: Digimarc Corp
•
Filing: 2002-01-23
•
Granted: 2003-02-11
•
Expires: 2022-01-23
Abstract
Abstract A digital content object comprised of plural portions is steganographically encoded, with different portions of the object conveying different steganographic data. Data steganographically conveyed in a first portion can be required to access information in a second portion. Data steganographically conveyed in the second portion can be required to access information in a third portion, and so on. Such arrangements make it more difficult for hackers to gain access to electronic content.
Inventors
- 👤 Geoffrey B. Rhoads
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:53
CPC Classifications
G; G06; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/341; G06Q20/38; G06Q20/40; G06Q20/401; G06Q20/4014; G06Q20/40145; G06Q30/00; G06Q30/02; G06Q30/0283; G06T; G06T1/00; G06T1/0021; G06T1/005; G06T1/0064; G07; G07C; G07C9/00; G07C9/20; G07C9/22; G07C9/25; G07C9/253; G07D; G07D7/00; G07D7/003; G07D7/0032; G07D7/004; G07F; G07F17/00; G07F17/16; G07F7/00; G07F7/08; G07F7/086; G07F7/10; G07F7/1008; G07F7/1016; G07F7/12; G10; G10L; G10L19/00; G10L19/018; G11; G11B; G11B20/00; G11B20/00086; G11B20/00094; G11B20/00115; G11B20/00166; G11B20/00181; G11B20/0021; G11B20/00884; G11B20/00891; H; H04; H04B; H04B1/00; H04B1/66; H04B1/665; H04K; H04K1/00; H04K1/02; H04N; H04N1/00; H04N1/00002; H04N1/00005; H04N1/00026; H04N1/00037; H04N1/00071; H04N1/00074; H04N1/00079; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32154; H04N1/3216; H04N1/32203; H04N1/32208; H04N1/32251; H04N1/32288; H04N5/00; H04N5/76; H04N5/91; H04N5/913; G06T2201/00; G06T2201/005; G06T2201/0052; G06T2201/0065; G11B20/10; G11B20/10527; G11B2020/10537; H04N2005/91307; H04N2005/91321; H04N2005/91335; H04N2005/91342; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3204; H04N2201/3205; H04N2201/3207; H04N2201/3225; H04N2201/3226; H04N2201/3233; H04N2201/3269; H04N2201/327; H04N2201/3271; H04N2201/328; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N9/8205
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
80 words
A method of processing a digital content object comprised of plural portions, said portions representing audio or image information, the method comprising: steganographically encoding first decryption instruction data in one of said portions; and steganographically encoding second, different decryption instruction data in another of said portions; wherein the first decryption instruction data is needed to decrypt data from a first of said portions, and the second decryption instruction data is needed to decrypt data from a second of said portions.
Claim 2
Independent Claim
80 words
A method of processing a digital content object comprised of plural portions, said portions representing audio or image information, the method comprising: steganographically encoding first decryption instruction data in one of said portions; and steganographically encoding second, different decryption instruction data in another of said portions; wherein the first decryption instruction data is needed to decrypt data from a first of said portions, and the second decryption instruction data is needed to decrypt data from a second of said portions.
Claim 3
Dependent Claim
14 words
The method of claim 1 in which the digital content object represents audio information.
Claim 4
Dependent Claim
14 words
The method of claim 1 in which the digital content object represents image information.
Claim 5
Independent Claim
65 words
A method of processing a digital content object comprised of plural portions, said portions representing audio or image information, comprising: steganographically decoding first decryption instruction data from one of said portions; steganographically decoding second, different decryption instruction data from another of said portions; and using said first and second decryption instruction data to decrypt data from first and second portions of said digital content, respectively.
Claim 6
Independent Claim
65 words
A method of processing a digital content object comprised of plural portions, said portions representing audio or image information, comprising: steganographically decoding first decryption instruction data from one of said portions; steganographically decoding second, different decryption instruction data from another of said portions; and using said first and second decryption instruction data to decrypt data from first and second portions of said digital content, respectively.
Claim 7
Dependent Claim
14 words
The method of claim 4 in which the digital content object represents audio information.
Claim 8
Dependent Claim
14 words
The method of claim 4 in which the digital content object represents image information.
Claim 9
Independent Claim
67 words
A method for use with a digital content object comprised of plural portions, said portions representing audio or image information, the procedure comprising: steganographically decoding first data from a first of said portions; and using at least part of said first data in processing information from a second of said portions, said processing being necessary in order to render the audio or image information to a user.
Claim 10
Independent Claim
67 words
A method for use with a digital content object comprised of plural portions, said portions representing audio or image information, the procedure comprising: steganographically decoding first data from a first of said portions; and using at least part of said first data in processing information from a second of said portions, said processing being necessary in order to render the audio or image information to a user.
Claim 11
Dependent Claim
14 words
The method of claim 7 in which the digital content object represents audio information.
Claim 12
Dependent Claim
14 words
The method of claim 7 in which the digital content object represents image information.
Claim 13
Dependent Claim
11 words
The method of claim 7 in which said processing comprises decrypting.
Claim 14
Dependent Claim
17 words
The method of claim 10 that further includes steganographically decoding second data from the decrypted second portion.
Claim 15
Dependent Claim
41 words
The method of claim 11 that further includes using at least part of said second data in processing information from a third of said portions, said processing being necessary in order to render the audio or image information to a user.
Claim 16
Dependent Claim
18 words
The method of claim 7 in which said processing comprises steganographic decoding second data from said second portion.
Claim 17
Dependent Claim
25 words
The method of claim 13 that further includes using at least part of said second data in processing information from a third of said portions.
References Cited (Backward Citations)
US3845391A
Cited
US4495620A
Cited
US4750173A
Cited
US4775901A
Cited
US5394274A
Cited
US5161210A
Cited
EP0372601A1
Cited
US5134496A
Cited
US5374976A
Cited
US5559559A
Cited
US5987127A
Cited
US5721788A
Cited
US5404160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-02-10 | 2006-08-12 | 2007-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-10 | 2010-08-12 | 2011-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-10 | 2014-08-12 | 2015-02-11 | $7700.00 | Window Closed / Lapsed |