Linking of computers based on steganographically embedded digital data

• US 6,542,927 B2
• Filed: 06/29/2001
• Issued: 04/01/2003
• Est. Priority Date: 07/27/1995
• Status: Expired due to Fees

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Rhoads, Geoffrey B.
• Primary Examiner(s): VU, VIET DUY
• Application Number:
  US09/895,748
• Publication Number:
  US 20020016816A1
• Time in Patent Office: 641 Days
• Field of Search: 709/217, 709/219, 709/227, 709/313, 709/328, 380/3-6, 380/28, 380/54
• US Class Current: 709/217
• CPC Class Codes: B42D 25/00 Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof printing processes to produce identification or security features B41M3/14
• CPC Class Codes: G06F 16/955 using information identifiers, e.g. uniform resource locators [URL]
• CPC Class Codes: G06F 21/16 Program or content traceability, e.g. by watermarking
• CPC Class Codes: G06F 21/36 by graphic or iconic representation
• CPC Class Codes: G06F 21/608 Secure printing
• CPC Class Codes: G06F 2221/2107 File encryption
• CPC Class Codes: G06F 2221/2119 Authenticating web pages, e.g. with suspicious links
• 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 19/18 Constructional details
• 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 20/308 using the Internet of Things
• 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: G06Q 30/02 Marketing; Price estimation or determination; Fundraising
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G07C 2011/02 : related to amusement parks
• CPC Class Codes: G07C 9/253 : visually
• 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 17/26 : for printing, stamping, franking, typing or teleprinting apparatus ticket printing or the like apparatus G07F17/42
• 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 20/00086 : Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00884 : involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
• CPC Class Codes: G11B 20/00891 : embedded in audio data
• 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 1/00973 : from a remote device, e.g. receiving via the internet instructions input to a computer terminal
• CPC Class Codes: H04N 1/32122 : in a separate device, e.g. in a memory or on a display separate from image data
• 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 1/32229 : with selective or adaptive application of the additional information, e.g. in selected regions of the image H04N1/32213 takes 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 2201/3225 : of data relating to an image, a page or a document
• CPC Class Codes: H04N 2201/3226 : of identification information or the like, e.g. ID code, index, title, part of an image, reduced-size image
• CPC Class Codes: H04N 2201/3233 : of authentication information, e.g. digital signature, watermark
• CPC Class Codes: H04N 2201/3249 : data relating to a linked page or object, e.g. hyperlink
• CPC Class Codes: H04N 2201/327 : which are undetectable to the naked eye, e.g. embedded codes
• CPC Class Codes: H04N 2201/3271 : Printing or stamping
• CPC Class Codes: H04N 2201/3274 : Storage or retrieval of prestored additional information
• CPC Class Codes: H04W 76/10 : Connection setup
• CPC Class Codes: H04W 8/26 : Network addressing or numbering for mobility support

Abstract

A printed object, such as an item of postal mail, a book, printed advertising, a business card, product packaging, etc., is steganographically encoded with plural-bit data. When such an object is presented to an optical sensor, the plural-bit data is decoded and used to establish a link to an internet address corresponding to that object.

Claims

1. A method of initiating access to a computer via a data communications medium, the method comprising:

receiving artwork corresponding to an object to be printed, the artwork including text and background;

steganographically embedding into a region of said background having substantially non-uniform pixel values certain information indicative of an address associated with said computer; and

printing said object using the artwork into which said information has been steganographically embedded.

2. A physical object printed on a substrate and including text and background, at least the background having a plural-bit code steganographically embedded therein, said code being an index to a data structure that specifies address information of a computer resource that is to be associated with said object, wherein at least a portion of said background has substantially non-uniform pixel values, and has said plural-bit code steganographically embedded therein.

3. The object of claim 2 wherein said data structure is maintained on a computer separate from the computer whose address information is to be associated with the object.

4. A method of initiating access to a computer via a data communications medium, the method comprising:

creating a data object with information indicative of an address associated with the computer;

steganographically embedding the data object in a second object comprising at least one of audio and visual data, said embedding occurring in-band within said audio or visual data, rather than in a part of said second object not intended for presentation to a user;

decoding from the second object the steganographically embedded data object; and

initiating a link to the computer using the address in the decoded data object.

5. The method of claim 4 wherein the address in the steganographically embedded data object is a URL address.

6. The method of claim 4 wherein the steganographically embedded data object includes an index number for use in accessing a data base.

7. The method of claim 4 that includes performing said decoding and initiating in the same device.

8. The method of claim 4 in which the second object is in digital form, and is not rendered into human-perceptible form between said embedding and decoding.

9. The method of claim 4 in which the second object comprises digital audio data.

10. The method of claim 4 in which the second object comprises digital image data.

11. The method of claim 4 in which the second object comprises video data.

12. The method of claim 4 that includes distributing the object to at least certain members of the public between said embedding and decoding.

13. The method of claim 4 in which said second object is originally in digital form when steganographically embedded, but is thereafter rendered into human-perceptible form, converted back into digital form, and decoded, wherein said rendering into human-perceptible form, and subsequent conversion back into digital form, does not prevent decoding of the steganographically embedded data object.

14. A method of initiating access to a computer via a data communications medium, the method comprising:

creating a data object with information indicative of an address associated with the computer;

steganographically embedding the data object in a second object comprising at least one of audio and visual data, said embedding extending generally throughout a sampled representation of said second object, rather than localized in a particular portion thereof, wherein the complete data object can be recovered from an excerpt of said second object and used to initiate a link to the computer.

15. The method of claim 14 in which the second object is represented by plural samples when in digital form, and said embedding changes a majority of said samples.

16. The method of claim 14 in which the second object is represented by plural samples when in digital form, and the embedding is relatively weaker in regions of relatively uniform samples.

17. A method of initiating access to a computer via a data communications medium, the method comprising:

receiving data corresponding to an audio object, said object comprising audio data and having information indicative of an address associated with the computer steganographically embedded in-band within said audio data;

decoding the information from said audio object; and

initiating a link to the computer using said information.

18. The method of claim 17 in which said receiving comprises receiving said object data from a digital storage or transmission medium in digital form, without said object having being rendered into human-perceptible form since being steganographically embedded.

19. The method of claim 17 in which said receiving comprises sensing a human-perceptible form of said audio object, as by a microphone, and converting into digital form.