Wireless methods using signature codes

• US 8,126,020 B2
• Filed: 04/21/2008
• Issued: 02/28/2012
• Est. Priority Date: 04/25/1996
• Status: Expired due to Fees

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Rhoads, Geoffrey B.
• Primary Examiner(s): Sam, Phirin
• Application Number:
  US12/106,815
• Publication Number:
  US 20080293381A1
• Time in Patent Office: 1,408 Days
• Field of Search: None
• US Class Current: 370/522
• CPC Class Codes: G06F 21/16 Program or content traceability, e.g. by watermarking
• CPC Class Codes: G06F 21/445 by mutual authentication, e.g. between devices or programs
• CPC Class Codes: G06F 2221/2129 Authenticate client device independently of the user
• CPC Class Codes: G06K 19/06037 multi-dimensional coding
• CPC Class Codes: G06K 19/06046 Constructional details
• CPC Class Codes: G06K 19/14 the marking being sensed by radiation
• CPC Class Codes: G06K 2019/06253 for a specific application
• CPC Class Codes: G06K 7/1417 2D bar codes
• CPC Class Codes: G06K 7/1447 extracting optical codes from image or text carrying said optical code
• CPC Class Codes: G06Q 20/306 using TV related infrastructures external card used for payment with client device H04N21/4185
• CPC Class Codes: G06Q 20/341 Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
• CPC Class Codes: G06Q 20/40145 Biometric identity checks
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G06T 1/0064 Geometric transfor invariant watermarking, e.g. affine transform invariant
• CPC Class Codes: G06T 2201/0081 whereby both original and watermarked images are required at decoder, e.g. destination-based, non-blind, non-oblivious
• CPC Class Codes: G07D 7/0034 using watermarks
• CPC Class Codes: G07D 7/004 using digital security elements, e.g. information coded on a magnetic thread or strip
• CPC Class Codes: G07F 17/16 for devices exhibiting advertisements, announcements, pictures or the like
• CPC Class Codes: G07F 7/086 by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer for security documents G07D7/00; for the reading of record-carriers in general G06K7/00; for the design of coded credit-cards G06K19/10
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
• CPC Class Codes: G10L 19/018 : Audio watermarking, i.e. embedding inaudible data in the audio signal
• CPC Class Codes: G11B 20/00891 : embedded in audio data
• CPC Class Codes: H04L 63/0428 : wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 9/0662 : with particular pseudorandom sequence generator
• CPC Class Codes: H04M 1/66 : with means for preventing unauthorised or fraudulent calling verifying user identity or authority in secret or secure digital communications H04L9/32
• CPC Class Codes: H04M 3/38 : Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections queuing arrangements H04Q3/64
• CPC Class Codes: H04N 1/00005 : relating to image data
• CPC Class Codes: H04N 1/00037 : Detecting, i.e. determining the occurrence of a predetermined state H04N1/00031 takes precedence
• CPC Class Codes: H04N 1/00079 : remotely
• CPC Class Codes: H04N 1/00846 : based on detection of a dedicated indication, e.g. marks or the like
• CPC Class Codes: H04N 1/00875 : Inhibiting reproduction, e.g. by disabling reading or reproduction apparatus
• CPC Class Codes: H04N 1/32144 : embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
• CPC Class Codes: H04N 1/3216 : using Fourier transforms
• CPC Class Codes: H04N 1/32203 : Spatial or amplitude domain methods H04N1/32309 takes precedence
• CPC Class Codes: H04N 1/32208 : involving changing the magnitude of selected pixels, e.g. overlay of information or super-imposition H04N1/32219, H04N1/32224 take precedence
• CPC Class Codes: H04N 1/32251 : in multilevel data, e.g. greyscale or continuous tone data
• CPC Class Codes: H04N 1/32288 : Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
• CPC Class Codes: H04N 1/32352 : Controlling detectability or arrangements to facilitate detection or retrieval of the embedded information, e.g. using markers for decoding, detection or retrieval operations H04N1/32149 and subgroups take precedence
• CPC Class Codes: H04N 2201/0091 : Digital copier; digital 'photocopier' H04N2201/0093 and H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/3205 : of identification information, e.g. name or ID code H04N2201/3209 takes precedence
• CPC Class Codes: H04N 2201/3233 : of authentication information, e.g. digital signature, watermark
• CPC Class Codes: H04N 2201/327 : which are undetectable to the naked eye, e.g. embedded codes
• CPC Class Codes: H04N 2201/3274 : Storage or retrieval of prestored additional information
• CPC Class Codes: H04W 12/06 : Authentication
• CPC Class Codes: H04W 12/126 : Anti-theft arrangements, e.g. protection against subscriber identity module [SIM] cloning
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: Y10T 428/24876 : Intermediate layer contains particulate material [e.g., pigment, etc.]

Abstract

Data representing media content, such as audio data, is processed to produce a signature code therefrom. This code can be used by wireless and other devices for a variety of purposes. Some relate to cryptographic operations. Others relate to determining whether operations involving the media content are legitimate.

Claims

1. A method comprising:

receiving media content data at a device, for rendering to a human, through a channel that includes a wireless link;

processing the received media content data to produce a signature code therefrom; and

using the signature code in the device in connection with a cryptographic operation by seeding a pseudo random number generator to identify an offset address in a noise key.

2. The method of claim 1, further comprising processing information on a processor of the device, based on the signature code.

3. The method of claim 1, further comprising transmitting data from the device, wherein the transmitted data depends, in part, on the signature code.

4. The method of claim 1, further comprising preventing use of the media content data based on the cryptographic operation.

5. The method of claim 1, wherein processing of the media content data to produce the signature code therefrom comprises performing a statistical analysis.

6. The method of claim 1, wherein the processing of the media content data to produce the signature code therefrom comprises performing a steganographic decoding operation.

7. A method comprising:

receiving media content data at a device through a channel that includes a wireless link, wherein the media content data represents content for rendering to a user;

processing the received media content data at the device to produce a signature code therefrom; and

determining whether an operation involving the media content data should be treated as legitimate, by reference to the signature code to identify an offset address using a pseudo random number generator.

8. The method of claim 7, further comprising interrupting the communication channel if the determination is negative.

9. A tangible computer-readable medium having instructions stored thereon that, if executed by a computing device, cause the computing device to perform operations comprising:

receiving media content data, for rendering to a human, through a channel that includes a wireless link;

processing the received media content data to produce a signature code therefrom; and

using the signature code in connection with a cryptographic operation by seeding a pseudo random number generator to identify an offset address in a noise key.

10. The tangible computer-readable medium of claim 9, further comprising instructions that, if executed by the computing device, cause the computing device to perform operations comprising processing information based on the signature code.

11. The tangible computer-readable medium of claim 9, further comprising instructions that, if executed by the computing device, cause the computing device to perform operations comprising transmitting data, wherein the transmitted data depends, in part, on the signature code.

12. The tangible computer-readable medium of claim 9, further comprising instructions that, if executed by the computing device, cause the computing device to perform operations comprising preventing use of the media content data based on the cryptographic operation.

13. The tangible computer-readable medium of claim 9, wherein processing of the media content data to produce the signature code therefrom comprises performing a statistical analysis.

14. The tangible computer-readable medium of claim 9, wherein the processing of the media content data to produce the signature code therefrom comprises performing a steganographic decoding operation.

15. A tangible computer-readable medium having instructions stored thereon that, if executed by a computing device, cause the computing device to perform operations comprising:

receiving media content data through a channel that includes a wireless link, wherein the media content data represents content for rendering to a user;

processing the received media content data to produce a signature code therefrom; and

determining whether an operation involving the media content data should be treated as legitimate, by reference to the signature code to identify an offset address using a pseudo random number generator.

16. The tangible computer-readable medium of claim 15, further comprising instructions that, if executed by the computing device, cause the computing device to perform operations comprising interrupting the communication channel if the determination is negative.