Methods and systems for digital rights management of protected content

• US 20050021539A1
• Filed: 03/05/2004
• Published: 01/27/2005
• Est. Priority Date: 03/07/2003
• Status: Abandoned Application

• Current Assignee: Groove Mobile, Inc. (Live Microsystems, Inc.)
• Original Assignee: Chaticom Incorporated
• Inventors: Gallagher, Michael, Glover, Michael A., Dorward, Peter, Struven, Jeff, Hunt, Barry F., Garcia, Ricardo, Curley, John, Short, Kevin M.
• Application Number:
  US10/794,571
• Publication Number:
  US 20050021539A1
• Time in Patent Office: Days
• US Class Current: 1/1
• 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: H03M 7/40 Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
• CPC Class Codes: H04L 2209/603 Digital right managament [DRM]
• CPC Class Codes: H04L 9/001 using chaotic signals

Abstract

The invention is directed, in one embodiment, to systems and methods relating to managing rights associated with digital content.

Claims

1. A method of providing digital content to a first client device, the method comprising:

a. transforming original digital content into a first transformed digital content representative of a first portion of, and distinct from, the original digital content;

b. creating a first table of characteristics associated with the first transformed digital content, the first table of characteristics being necessary for inverse transforming the first transformed digital content into the first portion of the original digital content; and

c. transmitting the first transformed digital content and a representation of the first table of characteristics to the first client device.

2. The method of claim 1, comprising encrypting the first table of characteristics using an identifier uniquely associated with the first client device, to generate the representation of the first table of characteristics.

3. The method of claim 1, wherein the transforming includes compressing the original digital content.

4. The method of claim 1, wherein the first transformed digital content is smaller than the original digital content by a factor of at least about 10.

5. The method of claim 1, wherein the first transformed digital content is smaller than the original digital content by a factor of at least about 100.

6. The method of claim 1, wherein the first transformed digital content is smaller than the original digital content by a factor of at least about 1,000.

7. The method of claim 1, wherein the first transformed digital content is smaller than the original digital content by a factor of at least about 10,000.

8. The method of claim 1, wherein the first transformed digital content is smaller than the original digital content by a factor of at least about 100,000.

9. The method of claim 1, comprising employing the first table of characteristics to further compress the first transformed digital content.

10. The method of claim 1, wherein the first table of characteristics is smaller than the first transformed digital content by a factor of at least about 100.

11. The method of claim 1, wherein the first table of characteristics is smaller than the first transformed digital content by a factor of at least about 1,000.

12. The method of claim 1, wherein the first table of characteristics is smaller than the first transformed digital content by a factor of at least about 10,000.

13. The method of claim 1, wherein the first table of characteristics is smaller than the first transformed digital content by a factor of at least about 100,000.

14. The method of claim 1, including using the unique identifier to generate a digital key for encrypting the first table of characteristics.

15. The method of claim 1, including using the unique identifier as a digital key for encrypting the first table of characteristics.

16. The method of claim 1, wherein the device unique identifier is selected from the group consisting of a telephone number, EIN, MIN, MSISDN, serial number, number associated with a SIM card of the first client device, a public/private key encryption process, a MAC address of a modem associated with a computer, a personal identifier uniquely associated with a user, a proprietary identifier, and a combination thereof.

17. The method of claim 1, wherein the unique identifier includes any number stored at the first client device.

18. The method of claim 1, comprising optimizing the first table of characteristics for the at least one of the original digital content and the first transformed digital content.

19. The method of claim 1, comprising employing the first table of characteristics to remove redundancy in the first transformed digital content.

20. The method of claim 1, comprising retrieving the unique identifier from a database of unique identifiers.

21. The method of claim 1, wherein the first table of characteristics includes a dynamically created custom coding table.

22. The method of claim 1, wherein the custom coding table includes a custom Huffman coding table.

23. The method of claim 1, wherein the custom coding table includes an arithmetic coding table.

24. The method of claim 1, wherein the transmitting is performed over a wireless communication link.

25. The method of claim 1, wherein the first client device includes a wireless telephone.

26. The method of claim 1, wherein the first client device includes a media player.

27. The method of claim 1, wherein the first client device is chosen from the group consisting of a server computer, a desktop computer, a laptop computer, a handheld computer, a storage media, and a combination thereof.

28. The method of claim 1, comprising employing a chaotic system to transform the original digital content.

29. The method of claim 1, wherein employing the chaotic system comprises:

a. causing the chaotic system to assume a periodic orbit;

b. generating a periodic waveform for the periodic orbit;

c. weighting the periodic waveform to approximate a portion of the original digital content; and

d. merging at least one initialization code and a representation of the weighting, to compress the original digital content.

30. The method of claim 1, including stabilizing the periodic orbit.

31. The method of claim 1, including:

a. identifying a trend in the original digital content; and

b. removing the trend from the original digital content.

32. The method of claim 1, wherein identifying the trend includes determining a mathematical model for the trend.

33. The method of claim 1, including merging a representation of the trend, the at least one initialization code, and the representation of the weighting, to compress the original digital content.

34. The method of claim 1, wherein the original digital content includes audio data.

35. The method of claim 1, wherein the original digital content includes image data.

36. The method of claim 1, wherein the original digital content includes audio and image data.

37. The method of claim 1, wherein the original digital content includes video data.

38. The method of claim 1, wherein the original digital content includes video and audio data.

39. The method of claim 1, wherein the original digital content includes tactile data.

40. The method of claim 1, comprising:

a. decrypting the first table of characteristics using the unique identifier at the first client device; and

b. inverse transforming the first transformed digital content using the decrypted first table of characteristics, to reconstruct the first portion of the original digital content.

41. The method of claim 1, comprising playing the first portion of the original digital content during reconstruction of the first portion of the original digital content at the first client device, but not persistently storing a subset of the reconstructed digital content at the first client device.

42. The method of claim 1, comprising transmitting the first transformed digital content and the representation of the first table of characteristics from the first client device to a second client device.

43. The method of claim 1, comprising aborting inverse transformation of the first transformed digital content, in response to detecting that the second client device is not associated with the unique identifier.

44. The method of claim 1, comprising aborting inverse transformation of the first transformed digital content, in response to detecting that the first table of characteristics is invalid for the second client device.

45. The method of claim 1 comprising generating invalid digital content at the second client device, in response to an attempt to inverse transform the first transformed digital content at the second client device.

46. The method of claim 1, comprising generating invalid digital content at the second client device, in response to detecting that the unique identifier is not associated with the second client device.

47. The method of claim 1, comprising generating invalid digital content at the second client device, in response to detecting that the first table of characteristics is invalid for the second client device.

48. The method of claim 1, comprising, in response to determining that the second client device is incapable of inverse transforming digital content from the first device to produce a valid version of the first portion of the original digital content:

a. sending a request for access to the original digital content from the second client device to a host server; and

b. in response to determining, by the host server, that the second client device is authorized to receive the original digital content, transmitting, by the host server, a corrected first table of characteristics to the second client device to enable the second client device to inverse transform the first transformed digital content into a valid version of the first portion of the original digital content.

49. The method of claim 1, comprising:

a. prompting a user at the second client device to request, from a host server, access to the first portion of the original digital content;

b. generating a billing event at the host server to charge the user of the second client device for access to the first portion of the original digital content; and

c. transmitting a corrected first table of characteristics to the second client device to enable the second client device to inverse transform the first transformed digital content into a valid version of the first portion of the original digital content.

50. The method of claim 1, wherein the original digital content includes an associated preview version.

51. The method of claim 1, wherein the preview version has an inferior quality relative to the original digital content.

52. The method of claim 1, wherein the preview version has a shorter duration than the original digital content.

53. The method of claim 1, comprising transmitting the first transformed digital content and the representation of the first table of characteristics from the first client device to a second client device to enable the second client device to inverse transform the first transformed digital content into the first portion of the original digital content.

54. The method of claim 1, comprising:

a. transforming the original digital content into a second transformed digital content representative of a second portion, distinct from the first portion, of the original digital content;

b. creating a second table of characteristics associated with the second transformed digital content, the second table of characteristics being necessary for inverse transforming the second transformed digital content into the second portion of the original digital content; and

c. transmitting the second transformed digital content and a representation of the second table of characteristics to the first client device.

55. The method of claim 1, comprising encrypting the second table of characteristics using a unique identifier to generate the representation of the second table of characteristics.

56. The method of claim 1, wherein transmitting the first transformed digital content includes streaming a subset of the first transformed digital content to the first client device, and causing a portion of the streamed subset of the first transformed digital content to not be persistently stored at the first client device.

57. The method of claim 1, wherein the second transformed digital content is associated with the portion of the streamed first transformed digital content not persistently stored at the first client device, the second transformed digital content being persistently stored at the first client device.

58. The method of claim 1, wherein the unique identifier is associated with the first client device.

59. The method of claim 1, wherein the first client device can decrypt the encrypted second table of characteristics, inverse transform the first and second transformed digital contents, and play a combination of the first portion and the second portion of the original digital content.

60. The method of claim 1, wherein the unique identifier is not associated with the first client device and the first client device can only inverse transform the first transformed digital content and play only the first portion of the original digital content.

61. The method of claim 1, wherein the first portion of the original digital content is associated with a freely-distributable portion of the original digital content, intended for playing by any suitable client device, and the second portion of the original digital content is associated with a secure portion of the original digital content requiring decryption of the second table of characteristics.

62. The method of claim 1, wherein the first portion of the original digital content includes an advertisement or a promotion.

63. The method of claim 1, wherein the first portion of the original digital content includes a preview of the original digital content.

64. The method of claim 1, wherein the encrypting employs a chaotic system.

65. The method of claim 1, comprising regulating usage rights granted to the first client device.

66. The method of claim 1, wherein the regulating comprises limiting a number times the first client device may use the original digital content.

67. The method of claim 1, wherein the regulating comprises allowing the first client device to use the original digital content for a restricted length of time.

68. The method of claim 1, wherein the regulating comprises restricting a quality of the original digital content usable by the first client device.

69. The method of claim 1, including partitioning the original digital content into a plurality of layers associated with a respective plurality of quality of service levels.

70. The method of claim 1, wherein the first transformed digital content includes a subset of the layers associated with a desired quality of service level.

71. The method of claim 1, comprising varying the quality of service level based, at least in part, on availability of transmission bandwidth.

72. The method of claim 68, comprising:

a. decrypting the first table of characteristics at the first client device, using the identifier uniquely associated with the first client device; and

b. inverse transforming the first transformed digital content, using the decrypted first table of characteristics, to reconstruct the original digital content.

73. The method of claim 1, comprising altering noise-like data from the original digital content.

74. The method of claim 1, comprising, in response to determining that the first client device is authorized to use the original digital content, incorporating suitable data into the original digital content at the first client device to enable substantially accurate reconstruction of the original digital content at the first client device.

75. The method of claim 1, wherein the suitable data is produced, at least in part, by a first noise generator at the first client device.

76. The method of claim 1, wherein the suitable data is selected from the group consisting of random noise, pseudo-random noise, and a combination thereof.

77. The method of claim 1, wherein data produced by the first noise generator is uniquely associated with the first client device.

78. The method of claim 1, comprising initializing the first noise generator to an initial state.

79. The method of claim 1, wherein the initial state is uniquely associated with the first client device.

80. The method of claim 1, wherein data produced by the first noise generator is uniquely associated with the initial state.

81. The method of claim 1, comprising:

a. altering noise-like data from the original digital content; and

b. in response to determining that the first client device is not entitled to the original digital content, incorporating unsuitable data into the original digital content at the first client device to degrade reconstruction of the original digital content at the first client device.

83. The method of claim 1, wherein the encrypting includes:

a. causing the first chaotic system to assume a first phase space trajectory corresponding to a digital representation of the first table of characteristics, by applying at least one control to the first chaotic system; and

b. producing transmission data to be transmitted to the first client device, the transmission data including a digital representation of at least one initialization code and a digital representation of the at least one control, whereby a dynamic behavior of the first chaotic system cannot be reconstructed from the transmission data.

84. The method of claim 1, wherein the encrypting includes:

a. causing the first chaotic system to generate a first digital encryption key by applying an initialization code to the first chaotic system;

b. using the first digital encryption key in the encrypting of the first table of characteristics; and

c. producing transmission data to be transmitted to the first client device, the transmission data including the initialization code and the encrypted first table of characteristics, whereby a dynamic behavior of the first chaotic system cannot be reconstructed from the transmission data.

82. A method of providing digital content to a first client device, the method comprising:

a. transforming original digital content into a first transformed digital content representative of, and distinct from, the original digital content;

b. creating a first table of characteristics associated with the first transformed digital content, the first table of characteristics being necessary for inverse transforming the first transformed digital content into the original digital content;

c. encrypting the first table of characteristics using a first chaotic system; and

d. transmitting the first transformed digital content and the encrypted first table of characteristics to the first client device.