SYSTEM AND METHOD OF ENABLING CONTENT OUTPUT ON A DIGITAL DEVICE

• US 20100067693A1
• Filed: 09/08/2009
• Published: 03/18/2010
• Est. Priority Date: 09/17/2008
• Status: Abandoned Application

• Current Assignee: Dolby Laboratories Licensing Corporation (Dolby Laboratories Incorporated)
• Original Assignee: Dolby Laboratories Licensing Corporation (Dolby Laboratories Incorporated)
• Inventors: Schumann, Robert, Segal, Jeffrey, Courington, Jeffrey
• Application Number:
  US12/555,467
• Publication Number:
  US 20100067693A1
• Time in Patent Office: Days
• US Class Current: 380/210
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• 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 21/4405 involving video stream decryption
• CPC Class Codes: H04N 21/4623 Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14
• CPC Class Codes: H04N 7/165 Centralised control of user terminal subsequent to an upstream request signal H04N7/17345; Registering at central by two-way working H04N7/17309

Abstract

In one embodiment the present invention includes a system and method of distributing content. Authorization information is encoded with the content. When received and decoded, if a particular device output is authorized by the authorization information, then the content is output. By encoding the authorization information along with the content, unauthorized display of the content is reduced.

Claims

1. A method of distributing content, comprising:

associating at least one authorized display mode with the content;

generating a transport stream that includes the content and the at least one authorized display mode;

encoding the transport stream;

transmitting, by a first device, the transport stream having been encoded;

receiving, by a second device, at least one device display mode;

decoding the transport stream to generate the content and the at least one authorized display mode;

comparing the at least one device display mode and the at least one authorized display mode; and

outputting the content according to a result of the comparing.

2. The method of claim 1, wherein the content comprises video on demand content.

3. The method of claim 1, wherein associating the at least one authorized display mode comprises:

associating at least one authorized display mode with the content using extensible markup language (XML) metadata.

4. The method of claim 1, wherein the transport stream corresponds to an MPEG-2 (moving pictures experts group) format that includes the content in a video portion and that includes the at least one authorized display mode in an ECM (entitlement control message) portion.

5. The method of claim 1, wherein the at least one device display mode corresponds to a high definition multimedia interface and a high-bandwidth digital content protection standard.

6. The method of claim 1, wherein the at least one device display mode corresponds to a high definition multimedia interface and a digital video interface standard.

7. The method of claim 1, wherein the content is output when the at least one authorized display mode corresponds to the at least one device display mode.

8. A device for displaying content, comprising:

a decoder that receives an encoded transport stream, wherein the encoded transport stream includes the content and at least one authorized display mode, and that decodes the transport stream to generate the content and the at least one authorized display mode;

a conditional access system, coupled to the decoder, that receives at least one device display mode, that compares the at least one device display mode and the at least one authorized display mode, and that outputs a control signal; and

an output, coupled to the decoder and to the conditional access system, that outputs the content according to the control signal.

9. The device of claim 8, further comprising:

a demodulator that receives a modulated, multiplexed, encoded transport stream and that generates a multiplexed, encoded transport stream; and

a demultiplexer that receives the multiplexed, encoded transport stream and that generates the encoded transport stream.

10. The device of claim 8, wherein the at least one device display mode corresponds to a display device coupled to the conditional access system.

11. The device of claim 8, wherein the at least one device display mode corresponds to a display device coupled to the conditional access system via a high definition multimedia interface and a high-bandwidth digital content protection standard.

12. The device of claim 8, wherein the at least one device display mode corresponds to a display device coupled to the conditional access system via a high definition multimedia interface and a digital video interface standard.

13. The device of claim 8, wherein the content is output when the at least one authorized display mode corresponds to the at least one device display mode.

14. A method of displaying content, comprising:

receiving an encoded transport stream, wherein the encoded transport stream includes the content and at least one authorized display mode;

receiving at least one device display mode;

decoding the transport stream to generate the content and the at least one authorized display mode;

comparing the at least one device display mode and the at least one authorized display mode; and

outputting the content according to a result of the comparing.

15. The method of claim 14, wherein the at least one device display mode corresponds to a high definition multimedia interface and a high-bandwidth digital content protection standard.

16. The method of claim 14, wherein the at least one device display mode corresponds to a high definition multimedia interface and a digital video interface standard.

17. The method of claim 14, wherein the content is output when the at least one authorized display mode corresponds to the at least one device display mode.

18. A system for distributing content, comprising:

a distribution device that associates at least one authorized display mode with the content, that generates a transport stream that includes the content and the at least one authorized display mode, that encodes the transport stream, and that transmits the transport stream having been encoded; and

a receiver device that receives at least one device display mode, that decodes the transport stream to generate the content and the at least one authorized display mode, that compares the at least one device display mode and the at least one authorized display mode, and that outputs the content according to a result of the comparing.

19. The system of claim 18, further comprising:

a display device, having associated therewith the at least one device display mode, that communicates the at least one device display mode to the receiver device.

20. The system of claim 18, wherein the receiver device outputs the content when the at least one authorized display mode corresponds to the at least one device display mode.