Background watermark processing

• US 8,005,254 B2
• Filed: 09/20/2005
• Issued: 08/23/2011
• Est. Priority Date: 11/12/1996
• Status: Expired due to Fees

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Rhoads, Geoffrey B.
• Primary Examiner(s): Bali; Vikkram
• Assistant Examiner(s): Brooks; Julian D
• Application Number:
  US11/231,553
• Publication Number:
  US 20060013435A1
• Time in Patent Office: 2,163 Days
• Field of Search: 382/100, 380/200, 380/201, 713/176, 399/366, 386/94, 386/E5.004
• US Class Current: 382/100
• CPC Class Codes: G06T 1/005 Robust watermarking, e.g. average attack or collusion attack resistant
• CPC Class Codes: G06T 2201/0065 Extraction of an embedded watermark; Reliable detection

Abstract

Various improvements to steganographic systems, and applications therefore, are disclosed. Among these are analyzing content data (e.g., audio, image data) in a computer memory automatically, without user intervention, so as to detect steganographically embedded information. The results of such analysis can be used to alter an aspect of the computer device'"'"'s operation with respect to such content data. One application of the technology is to check the “clipboard” of a computer and alert the user when copyrighted material is found therein.

Claims

1. A computer device comprising:

a memory in which audio or visual content may be stored, wherein the memory comprises a clipboard data structure used by an operating system of the computer device; and

a processor operatively coupled to the memory and configured to automatically, without user intervention;

analyze the audio or visual content stored in the memory to detect plural-bit steganographic digital watermark data, wherein the watermark data is encoded as subtle variations to sample data representing the audio or visual content; and

alter an aspect of operation of the computer device with respect to the audio or visual content in accordance with detection of the watermark data.

2. The computer device of claim 1, wherein the altering comprises generating a signal which indicates that a third party has proprietary rights to the audio or visual content.

3. The computer device of claim 1, wherein the altering comprises altering a graphical display to present an alert which indicates that a third party has proprietary rights to the audio or visual content.

4. The computer device of claim 3, wherein the alert comprises a copyright symbol.

5. The computer device of claim 3, wherein the processor is further configured to:

sense a user action related to the altering of the graphical display; and

provide further information to the user in response to the sensed user action.

6. The computer device of claim 1, wherein the processor is configured to automatically report detection of at least a portion of the watermark data to a remote computer.

7. The computer device of claim 1, wherein, upon detection of the watermark data, the processor is configured to cause a box to be displayed on a display screen, wherein the box presents information to a user.

8. A computer device comprising:

a memory in which audio or visual content may be stored;

a processor operatively coupled to the memory and configured to automatically, without user intervention;

analyze the audio or visual content stored in the memory to detect plural-bit steganographic digital watermark data, wherein the watermark data is encoded as subtle variations to sample data representing the audio or visual content; and

alter an aspect of operation of the computer device with respect to the audio or visual content in accordance with detection of the watermark data; and

a receiver operatively coupled to the processor and configured to receive, from a remote database, information that controls the aspect of operation of the computer device, wherein at least a portion of the watermark data is provided to the remote database.

9. The computer device of claim 8, wherein the received information comprises hypertext markup language (HTML) instructions.

10. The computer device of claim 8, further comprising a transmitter operatively coupled to the processor and configured to provide at least the portion of the watermark data to the remote database in response to a user action.

11. The computer device of claim 8, wherein the processor alters operation of the computer device by generating a signal which indicates that a third party has proprietary rights to the audio or visual content.

12. The computer device of claim 11, wherein the signal comprises an alert, and wherein the processor is configured to present the alert on a graphical display.

13. The computer device of claim 12, wherein the alert comprises a copyright symbol.

14. The computer device of claim 12, wherein the processor is configured to:

sense a user action related to the alert presented on the graphical display; and

provide further information to the user in response to the sensed user action.

15. A method comprising:

storing audio or visual content in a memory of a computer device, wherein the memory comprises a clipboard data structure used by an operating system of the computer device;

analyzing automatically, without user intervention data representing the audio or visual content to detect plural-bit digital watermark data, wherein the watermark data is encoded as subtle variations to sample data representing the audio or visual content; and

altering automatically, without user intervention an aspect of operation of the computer device with respect to the audio or visual content in accordance with detection of the watermark data.

16. The method of claim 15, wherein the altering comprises signaling to a user that a third party has proprietary rights to the audio or visual content.

17. The method of claim 16, wherein the signaling comprises altering a graphical display to present an alert which indicates that the third party has proprietary rights to the audio or visual content.

18. The method of claim 17, wherein the alert comprises a copyright symbol.

19. The method of claim 17, further comprising:

sensing a user action related to the altering of the graphical display; and

providing further information to the user in response to the sensed user action.

20. A method comprising:

storing audio or visual content in a memory of a computer device;

analyzing automatically, without user intervention data representing the audio or visual content to detect plural-bit digital watermark data, wherein the watermark data is encoded as subtle variations to sample data representing the audio or visual content;

providing automatically, without user intervention at least a portion of the watermark data to a remote database;

receiving, from the remote database, information that controls an aspect of operation of the computer device; and

altering automatically, without user intervention the aspect of operation of the computer device with respect to the audio or visual content in accordance with detection of the watermark data and based at least in part on the information received from the remote database.

21. The method of claim 20, wherein the information received from the remote database comprises hypertext markup language (HTML) instructions.

22. The method of claim 20, wherein at least the portion of the watermark data is provided to the remote database in response to a user action.

23. The method of claim 20, further comprising displaying, upon detection of the watermark data, a box on a display screen, wherein the box presents information to a user.

24. The method of claim 20, wherein the altering comprises signaling to a user that a third party has proprietary rights to the audio or visual content.

25. The method of claim 24, wherein the signaling comprises altering a graphical display to present an alert which indicates that the third party has proprietary rights to the audio or visual content.

26. The method of claim 25, wherein the alert comprises a copyright symbol.

27. The method of claim 25, further comprising:

sensing a user action related to the altering of the graphical display; and

providing further information to the user in response to the sensed user action.

28. A non-transitory computer-readable medium having computer-readable instructions stored thereon, the instructions comprising:

instructions to store audio or visual content in a memory, wherein the memory comprises a clipboard data structure used by an operating system of a computer device;

instructions to analyze the audio or visual content stored in the memory to detect plural-bit steganographic digital watermark data, wherein the watermark data is encoded as subtle variations to sample data representing the audio or visual content; and

instructions to alter an aspect of operation of the computer device with respect to the audio or visual content in accordance with detection of the watermark data.

29. A non-transitory computer-readable medium having computer-readable instructions stored thereon, the instructions comprising:

instructions to store audio or visual content in a memory of a computer device;

instructions to analyze the audio or visual content stored in the memory to detect plural-bit steganographic digital watermark data, wherein the watermark data is encoded as subtle variations to sample data representing the audio or visual content;

instructions to alter an aspect of operation of the computer device with respect to the audio or visual content in accordance with detection of the watermark data; and

instructions to receive, from a remote database, information that controls the aspect of operation of the computer device, wherein at least a portion of the watermark data is provided to the remote database.