Secure distribution of digital content

• US 20040064416A1
• Filed: 04/02/2003
• Published: 04/01/2004
• Est. Priority Date: 10/03/2000
• Status: Abandoned Application

• Current Assignee: PortAuthority Technologies, Inc. (Forcepoint LLC)
• Original Assignee: PortAuthority Technologies, Inc. (Forcepoint LLC)
• Inventors: Tirosh, Oren, Troyansky, Lidror, Peled, Ariel, Baratz, Arik, Litai, Assaf
• Application Number:
  US10/398,192
• Publication Number:
  US 20040064416A1
• Time in Patent Office: Days
• US Class Current: 705/51
• CPC Class Codes: G06F 16/958 Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
• CPC Class Codes: G06F 21/1063 Personalisation
• CPC Class Codes: G06F 21/16 Program or content traceability, e.g. by watermarking
• CPC Class Codes: G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal
• CPC Class Codes: H04N 21/23892 involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
• CPC Class Codes: H04N 21/44204 Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched monitoring of user activities for profile generation for accessing a video database G06F16/739; protecting generic digital content where the protection is independent of the precise nature of the content G06F21/10; arrangements for monitoring the use made of the broadcast services in broadcast systems H04H60/31
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 21/8456 by decomposing the content in the time domain, e.g. in time segments

Abstract

A method for secure distribution of digital content (108), the method including the steps of dividing a unit of digital content into at least first and second portions (200), storing the first portion on a first computerized apparatus, digitally watermarking the second portion, and combining the first portion and the digitally watermarked second portion, thereby forming a watermarked (106) version of the digital content.

Claims

1. Apparatus for efficient and traceable distribution of digital content, the apparatus comprising:

a content divider for dividing digital content into parts of a first kind and parts of a second kind,

a first content part distributor for distributing parts of said first kind for easy access a content watermarked for inserting unique digital indicators into parts of said second kind per a request for said content, and

a second content part distributor for distributing parts of said second kind per said request for association with parts of said first kind, thereby to distribute combined parts of said first and second kinds as reconstituted uniquely indicated digital content.

2. Apparatus according to claim 1, wherein said parts of said first kind are for distribution to easily accessible locations on a network and wherein said parts of said second kind are for rapid distribution on demand from a predetermined single network location.

3. Apparatus according to claim 2, wherein said parts of a first kind are substantially larger than said parts of said second kind.

4. Apparatus according to claim 3, wherein said content divider is operable to select said parts of said second kind such that said parts of said first kind show quality degradation when used without said parts of said second kind.

5. Apparatus according to claim 3, wherein said content divider is operable to select for said second kind, any content portion of a group comprising motion data, color data, and sound data.

6. Apparatus according to claim 3, wherein said content divider is operable to select for each of said kinds, non-contiguous data sections of said content.

7. Apparatus according to claim 1, said uniquely indicated digital content being usable with a marking detector to provide digital rights management of said content.

8. A method for secure distribution of digital content, the method comprising the steps of:

dividing a unit of digital content into at least one portion of a first kind and at least one portion of a second kind;

storing said at least one portion of a first kind on a first computerized apparatus;

digitally watermarking said at least one portion of a second kind;

storing said digitally watermarked portion of a second kind on a second computerized apparatus; and

combining said portion of a first kind and said digitally watermarked portion of a second kind, thereby forming a watermarked version of said digital content.

9. A method according to claim 8 wherein said dividing step comprises dividing said digital content into said kinds of portions such that each of said portions comprises non-contiguous segments of said digital content.

10. A method according to claim 8 wherein said dividing step comprises dividing said digital content into said portions, such that said portions of a first kind are larger than said portions of a second kind.

11. A method according to claim 8 wherein said dividing step comprises dividing said digital content such that a qualitative measure of either of said portion kinds is degraded relative to a corresponding qualitative measure of said digital content.

12. A method according to claim 8 wherein said dividing step comprises dividing said digital content such that either of said portion kinds taken alone are individually inoperable.

13. A method according to claim 8 wherein said storing said portion of a first kind comprises storing on a proxy server.

14. A method according to claim 8 wherein said digitally watermarking comprises uniquely watermarking said portion of a second kind.

15. A method according to claim 8 and further comprising the steps of:

receiving a request from a requestor for said digital content; and

sending said watermarked version of said digital content to said requestor.

16. A method according to claim 8 wherein said combining step comprises combining at either of said computerized apparatus.

17. A method according to claim 8 wherein said combining step comprises sending said portions to a third computerized apparatus and combining at said third computerized apparatus.

18. A method for secure distribution of digital content, the method comprising the steps of:

dividing a unit of digital content into at least portions of a first kind and portions of a second kind, wherein said portions of a first kind are larger than said portions of a second kind, and wherein said dividing step comprises at least one of;

dividing said digital content such that a qualitative measure of either of said portions of said first kind and said portions of said second kind are degraded relative to a corresponding qualitative measure of said digital content, and

dividing said digital content such that either of said portions of said first kind and portions of said second kinds are individually inoperable;

storing said portion of said first kind on a first computerized apparatus;

storing said portion of said second kind on a second computerized apparatus; and

combining said portions of said first kind and said portions of said second kind, thereby recreating said digital content.

19. A method according to claim 18 wherein said dividing step comprises dividing said digital content into at least portions of said first and second kinds, wherein each of said portions comprises non-contiguous segments of said digital content.

20. A method according to claim 18 wherein said storing said portion of a first kind step comprises storing on a proxy server.

21. A method according to claim 18 and further comprising the steps of:

receiving a request from a requestor for said digital content; and

sending said recreated digital content to said requestor.

22. A method according to claim 18 wherein said combining step comprises combining at either of said computerized apparatus.

23. A method according to claim 18 wherein said combining step comprises sending said portions to a third computerized apparatus and combining at said third computerized apparatus.

24. A system for secure distribution of digital content, the system comprising:

a content divider for dividing a unit of digital content into at least portions of a first kind and portion of a second kind;

a first storage device for storing said portions of a first kind on a first computerized apparatus;

a watermarking unit for digitally watermarking said portions of a second kind;

a second storage device for storing said digitally watermarked portions of a second kind on a second computerized apparatus; and

a combiner for combining said portion of a first kinds and said digitally watermarked portion of a second kinds, thereby forming a watermarked version of said digital content.

25. A system according to claim 24 wherein said content divider is operable to divide said digital content into said portion kinds, such that each of said portions comprises non-contiguous segments of said digital content.

26. A system according to claim 24 wherein said content divider is operable to divide said digital content into at least said first and second portion kinds, and wherein said portion of a first kind is larger than said portion of a second kind.

27. A system according to claim 24 wherein said content divider is operable to divide said digital content such that a qualitative measure of either of said portion kinds is degraded relative to a corresponding qualitative measure of said digital content.

28. A system according to claim 24 wherein said content divider is operable to divide said digital content such that either of said portion kinds are individually inoperable.

29. A system according to claim 24 wherein said first storage device is located on a proxy server.

30. A system according to claim 24 wherein said watermarking unit is operative to uniquely watermark said portion of a second kind.

31. A system according to claim 24 and further comprising:

a request receiver for receiving a request from a requester for said digital content; and

a content sender for sending said watermarked version of said digital content to said requester.

32. A system according to claim 24 wherein said combiner is operative to combine at either of said computerized apparatus.

33. A system according to claim 24 wherein said combiner is operative to send said portions to a third computerized apparatus and combine at said third computerized apparatus.

35. A method according to claim 29, wherein said dividing is carried out such as to ensure that said portion of a first kind is larger than said portion of a second kind, said dividing comprising at least one of:

dividing said digital content such that a qualitative measure of either of said portion kinds is degraded relative to a corresponding qualitative measure of said digital content, and

dividing said digital content such that either of said portion kinds are individually inoperable; and

storing said portion of a first kind on a first computerized apparatus.

36. A method according to claim 29 wherein each of said portion kinds comprises non-contiguous segments of said digital content.

37. A method according to claim 29 comprising storing said portion of a first kind on a proxy server.

38. A method according to claim 29 and further comprising:

receiving a request from a requester for said digital content; and

sending said recreated digital content to said requestor.

39. A method according to claim 29 being operative to combine at either of said computerized apparatus.

40. A method according to claim 29 comprising sending said portions to a third computerized apparatus and combining at said third computerized apparatus.

34. A method for secure distribution of digital content, the method comprising the steps of:

dividing a unit of digital content into at least portions of a first kind and portions of a second kind;

storing said portion of a first kind on a computerized apparatus;

storing said portion on a computerized apparatus; and

combining said portion of a first kind and said portion of a second kind, thereby to form an operable version of said digital content.