System and method for caching data

• US 20060085349A1
• Filed: 10/03/2005
• Published: 04/20/2006
• Est. Priority Date: 11/21/2003
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: RealNetworks, Inc.
• Inventors: Hug, Joshua D.
• Granted Patent: US 8,996,420 B2
• Time in Patent Office: Days
• US Class Current: 705/57
• CPC Class Codes: G06Q 20/123 Shopping for digital content
• CPC Class Codes: H04H 60/23 using cryptography, e.g. encryption, authentication, key distribution
• CPC Class Codes: H04H 60/63 for services of sales data processing systems or methods specially adapted for electronic commerce G06Q30/00
• CPC Class Codes: H04L 65/60 Network streaming of media packets
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04L 65/75 Media network packet handling
• CPC Class Codes: H04L 65/756 adapting media to device capabilities
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04N 21/25816 involving client authentication restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/4108 characterised by an identification number or address, e.g. local network address protecting specific internal or external computer components using identification number G06F21/73; network arrangements, protocols or services for addressing or naming H04L61/00
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• 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 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/472 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content end-user interfaces for retrieving video data from a database G06F16/739; network services for supporting unicast streaming H04L65/612
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6334 for authorisation, e.g. by transmitting a key wireless communications network key management H04W12/04; wireless communications network access security H04W12/08
• CPC Class Codes: H04N 7/173 with two-way working, e.g. subscriber sending a programme selection signal
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications

Abstract

A method of obtaining radio content from a remote electronic device for a user electronic device includes transmitting a request for radio media content to a first remote electronic device via a network. Radio media content that includes a plurality of media data files is received via the network. The received plurality of media data files are stored in a storage device of the user electronic device. A radio playlist that defines a rendering sequence for the plurality of media data files is requested. In response to the request for the radio playlist, the radio playlist is received. The radio playlist is processed in the user electronic device to enable the stored plurality of media data files to be rendered on the user electronic device in accordance with the radio playlist.

Claims

1. A method of obtaining radio content from a remote electronic device for a user electronic device, the method comprising:

transmitting a request for radio media content to a first remote electronic device via a network;

receiving radio media content that includes a plurality of media data files via the network;

storing the received plurality of media data files in a storage device of the user electronic device;

requesting a radio playlist that defines a rendering sequence for the plurality of media data files;

in response to the request for the radio playlist, receiving the radio playlist; and

processing the radio playlist in the user electronic device to enable the stored plurality of media data files to be rendered on the user electronic device in accordance with the radio playlist.

2. The method of claim 1 wherein requesting a radio playlist includes requesting a radio playlist, from a second remote electronic device, that defines the rendering sequence for the plurality of media data files;

wherein receiving the radio playlist includes receiving the radio playlist, via the network, from the second remote electronic device.

3. The method of claim 2 wherein the second remote electronic device is the first remote electronic device.

4. The method of claim 2 wherein the user electronic device is coupled to the first and second remote electronic devices.

5. The method of claim 2 wherein the user electronic device is coupled to the first and second remote electronic devices via the network.

6. The method of claim 1 further comprising:

generating the radio playlist on the user electronic device.

7. The method of claim 1 wherein the rendering sequence is compliant with one or more of The Digital Millennium Copyright Act, ASCAP policies, and BMI policies.

8. The method of claim 1 further comprising:

encrypting at least one of the plurality of media data files using a content encryption key to create an encrypted media data file;

binding the content encryption key to the encrypted media data file; and

binding the encrypted media data file to a user electronic device to form a bound media data file.

9. The method of claim 8 wherein binding the encrypted media data file to a user electronic device includes:

encrypting the content encryption key using a radio encryption key associated with the user electronic device.

10. The method of claim 9 wherein the user electronic device comprises at least one of a personal media device and a proxy computer.

11. The method of claim 1 further comprising:

storing the radio playlist on the user electronic device which comprises at least one of a personal media device and a proxy computer.

12. The method of claim 1 further comprising:

generating a seed content list that defines the plurality of media data files included within the radio media content.

13. A storage medium having a computer program stored thereon for causing an electronic device to process the computer-program code by performing the method of claim 1 when such computer program is executed on the device.

14. A method of obtaining radio content from a remote electronic device for a user electronic device, the method comprising:

receiving a request for radio media content on a first remote electronic device via a network;

providing, to a user electronic device, radio media content that includes a plurality of media data files via the network;

receiving a request for a radio playlist that defines a rendering sequence for the plurality of media data files; and

in response to the request for the radio playlist, providing the radio playlist to the user electronic device.

15. The method of claim 14 wherein receiving a request for a radio playlist includes receiving a request for a radio playlist, on a second remote electronic device, that defines the rendering sequence for the plurality of media data files;

wherein providing the radio playlist includes providing the radio playlist, via the network, to the user electronic device.

16. The method of claim 15 wherein the second remote electronic device is the first remote electronic device.

17. The method of claim 15 wherein the user electronic device is coupled to the first and second remote electronic devices.

18. The method of claim 15 wherein the user electronic device is coupled to the first and second remote electronic devices via the network.

19. The method of claim 14 further comprising:

generating the radio playlist on the user electronic device.

20. The method of claim 14 further comprising:

encrypting at least one of the plurality of media data files using a content encryption key to create an encrypted media data file;

binding the content encryption key to the encrypted media data file; and

binding the encrypted media data file to a user electronic device to form a bound media data file.

21. The method of claim 20 wherein binding the encrypted media data file to a user electronic device includes:

encrypting the content encryption key using a radio encryption key associated with the user electronic device.

22. The method of claim 21 wherein the user electronic device comprises at least one of a personal media device and a proxy computer.

23. The method of claim 14 further comprising:

storing the radio playlist on the user electronic device which comprises at least one of a personal media device and a proxy computer.

24. The method of claim 14 further comprising:

generating a seed content list that defines the plurality of media data files included within the radio media content.

25. A server computer configured to perform operations comprising:

processing a request for radio media content;

obtaining radio media content that includes a plurality of media data files; and

generating a radio playlist that defines a rendering sequence for a least a portion of the plurality of media data files.

26. The server computer of claim 25, wherein the server computer is further configured to perform operations comprising:

encrypting at least one of the plurality of media data files using a content encryption key to create an encrypted media data file;

binding the content encryption key to the encrypted media data file; and

binding the encrypted media data file to a user to form a bound media data file.

27. The server computer of claim 26 wherein binding the encrypted media data file to a user includes:

encrypting the content encryption key using a radio encryption key associated with the user.

28. The server computer of claim 27 wherein the server computer is further configured to perform operations comprising:

providing the bound media data file to at least one of a personal media device and a proxy computer.

29. The server computer of claim 25 wherein the server computer is further configured to perform operations comprising:

providing the radio playlist to at least one of a personal media device and a proxy computer.

30. The server computer of claim 25 wherein the server computer is further configured to perform operations comprising:

generating a seed content list that defines the plurality of media data files included within the radio media content.

31. A method of caching radio content comprising:

receiving radio media content that includes a plurality of media data files;

processing at least one of the plurality of media data files to generate a plurality of radio chunk files; and

storing at least two of the plurality of radio chunk files in at least two non-sequential memory locations within a storage device.

32. The method of claim 31 further comprising:

mixing at least two of the plurality of radio chunk files to generate at least two modified radio chunk files.

33. A storage medium having a computer program stored thereon for causing an electronic device to process the computer-program code by performing the method of claim 31 when such computer program is executed on the device.

34. A client electronic device configured to perform operations comprising:

receiving radio media content that includes a plurality of media data files;

processing at least one of the plurality of media data files to generate a plurality of radio chunk files; and

storing at least two of the plurality of radio chunk files in at least two non-sequential memory locations within a storage device.

35. The client electronic device of claim 34, wherein the client electronic device is further configure to perform operations comprising:

mixing at least two of the plurality of radio chunk files to generate at least two modified radio chunk files.

36. The client electronic device of claim 35 wherein storing at least two of the plurality of radio chunk files includes:

storing the at least two modified radio chunk files.

37. The client electronic device of claim 34, wherein the client electronic device is further configured to perform operations comprising:

storing, in a memory device, location information that defines the at least two non-sequential memory locations used to store the at least two of the plurality of radio chunk files.

38. The client electronic device of claim 37 wherein the location information includes a memory location algorithm.

39. The client electronic device of claim 37 wherein the location information includes at least one of a seed content list, a radio playlist, and a mapping file.

40. The client electronic device of claim 34 wherein the client electronic device includes at least one of a personal media device, a proxy computer, a client computer, and a cellular telephone.

41. A method of rendering radio content comprising:

processing a request to render a media data file included within radio media content;

processing location information to locate, within a storage device, a plurality of radio chunk files that constitute the media data file;

retrieving the plurality of radio chunk files from the storage device; and

processing the plurality of radio chunk files to generate the media data file.

42. The method of claim 41 wherein at least two of the plurality of radio chunk files were mixed together to generate at least two modified radio chunk files.

43. The method of claim 42 wherein processing the plurality of radio chunk files includes:

processing the at least two modified radio chunk files to generate the at least two of the plurality of radio chunk files.

44. The method of claim 41 further comprising:

rendering the media data file.

45. The method of claim 44 wherein rendering the media data file includes:

decrypting the media data file using a radio encryption key.

46. The method of claim 41 wherein the location information includes a memory location algorithm.

47. The method of claim 41 wherein the location information includes at least one of a seed content list, a radio playlist, and a mapping file.

48. A storage medium having a computer program stored thereon for causing an electronic device to process the computer-program code by performing the method of claim 41 when such computer program is executed on the device.

49. A client electronic device configured to perform operations comprising:

processing a request to render a media data file included within radio media content;

processing location information to locate, within a storage device, a plurality of radio chunk files that constitute the media data file;

retrieving the plurality of radio chunk files from the storage device; and

processing the plurality of radio chunk files to generate the media data file.

50. The client electronic device of claim 49 wherein at least two of the plurality of radio chunk files were mixed together to generate at least two modified radio chunk files.