System and method for caching data

• US 8,996,420 B2
• Filed: 10/03/2005
• Issued: 03/31/2015
• Est. Priority Date: 11/21/2003
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Hug, Joshua D.
• Primary Examiner(s): Berona, Kimberly
• Assistant Examiner(s): DEGA, MURALI K
• Application Number:
  US11/242,339
• Publication Number:
  US 20060085349A1
• Time in Patent Office: 3,466 Days
• Field of Search: None
• US Class Current: 705/52
• 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 and for storing the radio content in a user electronic device for subsequent offline playback by the user electronic device according to predetermined rules, the method comprising:

transmitting a request for radio media content to the 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;

storing, in the storage device of the user electronic device, a radio playlist that defines a rendering sequence for the plurality of media data files,

wherein the rendering sequence defines the number of times that each media file is played within a predetermined time period, and

wherein limits of the radio playlist are unalterable by a user of the user electronic device in compliance with the predetermined rules;

reserving a portion of the media data files stored in the user electronic device for use during a skip operation;

during a period of time when the user electronic device is un-tethered from the network or does not have an active connection to the remote electronic device, processing the radio playlist in the user electronic device to playback the stored plurality of media data files on the user electronic device in accordance with the unalterable limits of the radio playlist;

while processing the radio playlist, receiving a skip command from the user of the user electronic device; and

in response to the skip command, replacing a skipped media data file in the rendering sequence defined by the radio playlist with one of the reserved media data files to prevent the user from avoiding compliance with the predetermined rules using the skip command so as to maintain the defined limits on the number of times that each media file is played within the predetermined time period.

2. The method of claim 1, wherein the user electronic device communicates with the remote electronic device through a proxy computer, the method further comprising:

generating the radio playlist using the proxy computer; and

providing the radio playlist, from the proxy computer, to the user electronic device.

3. The method of claim 1, further comprising:

generating the radio playlist using the remote electronic device; and

providing the radio playlist, from the remote electronic device, to the user electronic device.

4. The method of claim 3, wherein the user electronic device receives the radio playlist from remote electronic device through a proxy computer.

5. The method of claim 2, wherein the user electronic device is coupled to the remote electronic device through the proxy computer 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, wherein the user electronic device 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 non-transitory, computer readable storage medium having instructions stored thereon which when executed by a processor, cause the processor to perform a method comprising:

transmitting a request for radio media content from a user electronic device to a 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;

storing, in the storage device of the user electronic device, a radio playlist that defines a rendering sequence for the plurality of media data files,

wherein the rendering sequence defines a number of times that each media file is played within a predetermined time period, and

wherein limits of the radio playlist are unalterable by a user of the user electronic device in compliance with predetermined rules;

reserving a portion of the media data files stored in the user electronic device for use during a skip operation;

during a period of time when the user electronic device is un-tethered from the network or does not have an active connection to the remote electronic device, processing the radio playlist in the user electronic device to playback the stored plurality of media data files on the user electronic device in accordance with the unalterable limits of the radio playlist;

while processing the radio playlist, receiving a skip command from the user of the user electronic device; and

in response to the skip command, replacing a skipped media data file in the rendering sequence defined by the radio playlist with one of the reserved media data files to prevent the user from avoiding compliance with the predetermined rules using the skip command so as to maintain the defined limits on the number of times that each media file is played within the predetermined time period.

30. The non-transitory, computer readable storage medium of claim 13, wherein the user electronic device communicates with the remote electronic device through a proxy computer, the method further comprising:

generating the radio playlist using the proxy computer; and

providing the radio playlist, from the proxy computer, to the user electronic device.

31. The non-transitory, computer readable storage medium of claim 13, wherein the user electronic device communicates with the remote electronic device through a proxy computer, the method further comprising:

generating the radio playlist using the remote electronic device; and

providing the radio playlist, from the remote electronic device, to the user electronic device.

32. The non-transitory, computer readable storage medium of claim 13, wherein the user electronic device receives the radio playlist from the remote electronic device through a proxy computer.

33. The non-transitory, computer readable storage medium of claim 13, wherein the user electronic device is coupled to the remote electronic device through the proxy computer via the network.

34. The non-transitory, computer readable storage medium of claim 13, the method further comprising:

generating the radio playlist on the user electronic device.

35. The non-transitory, computer readable storage medium of claim 13, wherein the rendering sequence is compliant with one or more of The Digital Millennium Copyright Act, ASCAP policies, and BMI policies.

36. The non-transitory, computer readable storage medium of claim 13, the method 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.

37. The non-transitory, computer readable storage medium of claim 36, 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.

38. The non-transitory, computer readable storage medium of claim 37, wherein the user electronic device comprises at least one of a personal media device and a proxy computer.

39. The non-transitory, computer readable storage medium of claim 13, wherein the user electronic device comprises at least one of a personal media device and a proxy computer.

40. The non-transitory, computer readable storage medium of claim 13, the method further comprising:

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

14. A method comprising:

transmitting a request for radio media content to a 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;

storing, in the storage device of the user electronic device, a radio playlist that defines a rendering sequence for the plurality of media data files and limits on playback of the media data files in compliance with predetermined rules, wherein the limits are unalterable by a user of the user electronic device;

during a period of time when the user electronic device is un-tethered from the network or does not have an active connection to the remote electronic device, processing the radio playlist in the user electronic device to playback the stored plurality of media data files on the user electronic device in accordance with the limits of the radio playlist;

reserving a portion of the media data files stored in the user electronic device for use when a user skips a media data file;

while processing the radio playlist, receiving an indication that the user of the user electronic device is skipping a media file; and

in response to receiving the indication, replacing a skipped media data file in the rendering sequence defined by the radio playlist with one of the reserved media data files to prevent the user from avoiding compliance with the predetermined rules by using the skip command.

15. The method of claim 14, wherein the user electronic device communicates with the remote electronic device through a proxy computer, the method further comprising:

generating the radio playlist using the proxy computer; and

providing the radio playlist, from the proxy computer, to the user electronic device.

16. The method of claim 14, further comprising:

generating the radio playlist using the remote electronic device; and

providing the radio playlist, from the remote electronic device, to the user electronic device.

17. The method of claim 16, wherein the user electronic device receives the radio playlist from remote electronic device through a proxy computer.

18. The method of claim 15, wherein the user electronic device is coupled to the remote electronic device through the proxy computer 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, wherein the rendering sequence is compliant with one or more of The Digital Millennium Copyright Act, ASCAP policies, and BMI policies.

21. 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.

22. The method of claim 21, 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.

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

24. The method of claim 14, wherein the user electronic device comprises at least one of a personal media device and a proxy computer.

25. 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.

26. A personal media device comprising:

a wireless communication interface configured to;

transmit a request for radio media content;

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

a storage device configured to;

store the received plurality of media data files;

store a radio playlist that defines a rendering sequence for the plurality of media data files, wherein the rendering sequence defines limits of the radio playlist including a number of times that each media file may be played within a predetermined time period and wherein the limits of the radio playlist are unalterable by a user of the personal media device in compliance with predetermined rules;

a user interface; and

a processing unit configured to execute instructions which cause the processor to;

reserve a portion of the plurality of media data files stored in the storage device for use during a skip operation;

process the radio playlist to playback the stored plurality of media data files in accordance with the unalterable limits of the radio playlist;

receive a skip command from the user of the personal media device via the user interface; and

in response to the skip command replace a skipped media data file in the rendering sequence defined by the radio playlist with one of the reserved media data files to prevent the user from using the skip command to avoid compliance with the predetermined rules and to maintain the defined limits on the number of times that each media file may be played within the predetermined time period.

27. The personal media device of claim 26, wherein the rendering sequence is compliant with one or more of The Digital Millennium Copyright Act, ASCAP policies, and BMI policies.

28. The personal media device of claim 26, wherein the wireless communication interface comprises an antenna.

29. The personal media device of claim 26, wherein the user interface comprises an input device and a display subsystem.