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US6959386B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Hiding encrypted messages in information carriers

Assignee: Digimarc Corp
•
Filing: 2001-07-25
•
Granted: 2005-10-25
•
Expires: 2021-07-25
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Abstract

Abstract An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier signal can thereby be identified, or some machine responsive action can thereby be taken. The technique can be applied in video imagery embodiments to control associated video equipment, e.g. to serve as a copy control signal.

Inventors

  • 👤 Geoffrey B. Rhoads

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 11:55
CPC Classifications
G; G06; G06F; G06F12/00; G06F12/14; G06F12/1408; G06Q; G06Q20/00; G06Q20/08; G06Q20/12; G06Q20/123; G06Q20/1235; G06Q20/30; G06Q20/34; G06Q20/341; G06Q20/38; G06Q20/40; G06Q20/401; G06Q20/4014; G06Q20/40145; G06T; G06T1/00; G06T1/0021; G06T1/005; G06T1/0057; 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; G07F17/26; G07F7/00; G07F7/08; G07F7/086; G07F7/10; G07F7/1008; G07F7/1016; G07F7/12; G10; G10L; G10L19/00; G10L19/018; G11; G11B; G11B20/00; G11B20/00007; G11B20/00086; G11B20/00094; G11B20/00115; G11B20/00166; G11B20/00181; G11B20/0021; G11B20/00884; G11B20/00891; G11B20/10; G11B20/10009; G11B20/10037; G11B20/10527; H; H04; H04B; H04B1/00; H04B1/66; H04B1/665; 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; H04N1/32203; H04N1/32208; H04N1/32251; H04N1/32288; H04N5/00; H04N5/76; H04N5/89; H04N5/90; H04N5/91; H04N5/913; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; H04N9/82; H04N9/8205; G06T2201/00; G06T2201/005; G06T2201/0052; G11B2020/00014; G11B2020/10537; G11B2020/10546; G11B2020/10555; H04N2005/91307; H04N2005/91321; H04N2005/91335; H04N2005/91342; H04N2005/9135; 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; H04N9/8047; Y; Y10; Y10S; Y10S283/00; Y10S283/901

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 83 words
A method of hiding a message in an information carrier, the steps comprising: a) encrypting a message with the use of a scrambling function; b) choosing an information carrier comprising a set of pixels; c) coding the shade or color level of said encrypted message using a set of pixels in said information carrier; d) modifying said shade or color level of each of said pixels of said coded message by one of a plurality of values; and e) transmitting said modified message.
Claim 2
Independent Claim 83 words
A method of hiding a message in an information carrier, the steps comprising: a) encrypting a message with the use of a scrambling function; b) choosing an information carrier comprising a set of pixels; c) coding the shade or color level of said encrypted message using a set of pixels in said information carrier; d) modifying said shade or color level of each of said pixels of said coded message by one of a plurality of values; and e) transmitting said modified message.
Claim 3
Independent Claim 38 words
A method of steganographically hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier.
Claim 4
Independent Claim 38 words
A method of steganographically hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier.
Claim 5
Independent Claim 45 words
A method of hiding a message in an information carrier comprising: encrypting a message: modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein the information carrier comprises a video frame.
Claim 6
Independent Claim 45 words
A method of hiding a message in an information carrier comprising: encrypting a message: modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein the information carrier comprises a video frame.
Claim 7
Independent Claim 49 words
A method of hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein said scaling scales the brightness level of the modulated encrypted message.
Claim 8
Independent Claim 49 words
A method of hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein said scaling scales the brightness level of the modulated encrypted message.
Claim 9
Independent Claim 50 words
A method of hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein said encrypting provides an encrypted message comprising a spatially uniform noisy message.
Claim 10
Independent Claim 50 words
A method of hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein said encrypting provides an encrypted message comprising a spatially uniform noisy message.
Claim 11
Independent Claim 46 words
A method of hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein the predetermined data comprises an N-bit identification word.
Claim 12
Independent Claim 46 words
A method of hiding a message in an information carrier comprising: encrypting a message; modulating the encrypted message with predetermined data; scaling said modulated encrypted message; and adding the scaled, modulated encrypted message to the information carrier, wherein the predetermined data comprises an N-bit identification word.

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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) 2008-10-24 2009-04-25 2009-10-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2012-10-24 2013-04-25 2013-10-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2016-10-24 2017-04-25 2017-10-25 $7700.00 Window Closed / Lapsed

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