Rights management using recording definition information (RDI)

• US 7,823,210 B2
• Filed: 05/23/2006
• Issued: 10/26/2010
• Est. Priority Date: 05/23/2006
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Grossman, IV, John H., Bessonov, Alexander
• Primary Examiner(s): Arani, Taghi T
• Assistant Examiner(s): HERZOG, MADHURI R
• Application Number:
  US11/419,981
• Publication Number:
  US 20070277234A1
• Time in Patent Office: 1,617 Days
• Field of Search: 726 2- 10, 726 26- 30, 726 16- 21, 380/278, 713/150, 713/167, 713/168, 713/176, 713/189, 713/193, 713182-186, 705/50, 705/51, 709/203, 709277-279, 709/246
• US Class Current: 726/27
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 2221/2137 Time limited access, e.g. to a computer or data

Abstract

A rights management system is described in which, subsequent to recording a media resource, client-side equipment receives and stores recording definition information (RDI). The RDI provides information that can be used to recover the keys used to decrypt the media resource. When a client device subsequently wishes to consume the media resource, it can forward the RDI to an operations center. At the operations center, a transcription module validates the client device'"'"'s rights and converts the RDI into client targeted information (CTI) by recovering the keys used to decrypt the media resource. The client device receives the CTI from the transcription module and uses it to consume the media resource. The CTI has an expiration date, after which it can no longer be used.

Claims

1. A method for administering rights to consume a resource, comprising:

receiving, from a first client device, following recording of the resource by the first client device, a recording definition information (RDI) request, the RDI request comprising a recording start time, a recording end time, and service identification information identifying a channel associated with the resource, wherein the first client device is one of multiple affiliated client devices configured to access a content store in which the recorded resource is stored;

generating the RDI for the resource in response to the request by fetching a resource key for the resource, wherein the RDI comprises a resource key that is required by the client devices to consume the recorded resource, wherein the resource key is encrypted by a session key to prevent client use of the resource key;

sending the RDI to the first client device, wherein the RDI is stored in a rights store accessible by the multiple client devices;

receiving the RDI from a second client device of the multiple client devices that wishes to consume the resource;

transcribing the RDI to client targeted information (CTI), wherein the transcribing comprises using information in the RDI to recover the resource key that can be used to consume the resource at the second client device, wherein the CTI comprises the resource key encrypted by a client-specific key for the second client device to use the resource key to consume the resource;

forwarding the CTI to the second client device for the second client device to use the CTI to consume the resource; and

in response to receiving the RDI from the second client device, generating multiple CTIs and forwarding the multiple CTIs to the second client device for storage in the rights store, wherein the multiple CTIs allow the multiple affiliated client devices to consume the resource.

2. The method of claim 1, wherein the receiving, transcribing, and forwarding are performed by an operations center, and wherein the operations center, prior to receiving the RDI, does not store the keys that can be used to consume the resource at the client device.

3. The method of claim 1, wherein the CTI includes expiration information that defines an amount of time that the CTI can be used to consume the resource by the second client device.

4. The method of claim 1, wherein the first client device uses one of the multiple CTIs corresponding to the first client device obtained by the second client device to consume the resource.

5. The method of claim 1, wherein the transcribing comprises determining whether the second client device has rights to consume the resource by consulting rights-related rules which set forth a policy regarding the second client device'"'"'s consumption of the resource.

6. One or more machine-readable media containing machine-readable instructions for implementing the method of claim 1.

7. A method comprising:

receiving a resource by a client device, wherein the client device stores a recording of the resource in a content store;

sending, to an operations center, a recording definition information (RDI) request comprising information identifying the resource recorded by the client device;

receiving, by the client device, the RDI for the resource in response to the request, the RDI received from the operations center comprising a first key that is required by the client device to consume the recorded resource, the first key being encrypted by a second key to prevent client use of the first key;

receiving an instruction to consume the recorded resource by the client device;

forwarding the RDI to the operations center in response to receiving the instruction to consume the recorded resource;

receiving, by the client device, from the operations center in response to the forwarded RDI, client targeted information (CTI), wherein the CTI contains the first key no longer encrypted by the second key; and

using the CTI received from the operations center to consume the resource at the client device; and

wherein the client device is a first client device from among plural affiliated client devices, and wherein, in response to receiving the RDI from the first client device, multiple CTIs are generated and forwarded to the first client device for storage in a rights store, wherein the multiple CTIs allow the plural affiliated client devices to consume the resource.

8. The method of claim 7, wherein the client device stores the RDI and the CTI received from the operations center in a store of a client-side recording device.

9. The method of claim 7, further comprising locally storing the RDI for later access by other affiliated client devices.

10. The method of claim 7, wherein the client device is a first client device from among plural affiliated client devices, and wherein a second one of the affiliated client devices receives an instruction to consume the recorded resource, wherein the second client device retrieves the RDI obtained by the first client device and sends the RDI to the operations center for obtaining another CTI.

11. The method of claim 7, wherein the operations center, prior to receiving the RDI, does not store the first key that can be used to consume the resource at the client device.

12. The method of claim 7, wherein the CTI includes expiration information that defines an amount of time that the CTI can be used to consume the resource by the client device.

13. One or more machine-readable media containing machine-readable instructions for implementing the method of claim 7.

18. The method of claim 7, wherein in response to a request to receive the resource the client device receives the resource as well as key information allowing the client device to consume the resource in a live mode, wherein following consumption of the resource in the live mode, the client device uses the CTI to consume the recording of the resource.

14. Rights management functionality implemented on one or more servers for administering rights to consume a resource, comprising:

a recording definition information (RDI) issuing module configured to issue recording definition information (RDI) after a resource has been recorded by a client-side recording device in response to receiving a request for the RDI from a client device identifying the recorded resource, wherein the RDI comprises a first key that is required by the client device to consume the recorded resource, wherein the first key is encrypted by a second key to prevent client use of the first key; and

a transcription module configured to;

receive the RDI from a client device that wishes to consume the resource;

convert the RDI into client targeted information (CTI) by decrypting the first key from the RDI so that the first key can be used by the client device to consume the resource;

forward the CTI to the client device; and

in response to receiving the RDI from the client device, multiple CTIs are generated and forwarded to the client device, wherein the multiple CTIs allow the multiple affiliated client devices to consume the recorded resource.

15. The rights management functionality of claim 14, wherein the CTI includes expiration information that defines an amount of time that the CTI can be used to consume the resource by the client device.

16. The rights management functionality of claim 14, wherein the request for the RDI is received from a first client device that recorded the resource, wherein the RDI is received from a second client device wishing to consume the recorded resource.

17. The rights management functionality of claim 14, wherein issuing the RDI includes fetching the first key that enables the client device to consume the recorded resource, wherein fetching the first key is based on the identifying of the recorded resource in the request for the RDI.