System, method and apparatus for secure data transmissions within an information handling system

• US 20060023883A1
• Filed: 07/27/2004
• Published: 02/02/2006
• Est. Priority Date: 07/27/2004
• Status: Abandoned Application

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Sauber, William F., Srivastava, Neeraj, Konetski, David
• Application Number:
  US10/899,896
• Publication Number:
  US 20060023883A1
• Time in Patent Office: Days
• US Class Current: 380/255
• CPC Class Codes: G06F 21/85 interconnection devices, e.g. bus-connected or in-line devices
• CPC Class Codes: H04N 21/4113 PC
• CPC Class Codes: H04N 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card

Abstract

A system, method and apparatus are provided for creating a secure data path using a peer-to-peer enabled Peripheral Component Interconnect-Express (PCI-E) data communications path. In an exemplary implementation, a content receiver and rendering subsystem are provided, each aware of the other. The content receiver is operable to receive protected content from a source such as a set-top box. After authenticating the rendering subsystem as an approved content recipient, the content receiver preferably communicates decrypted content signals to the rendering subsystem via a peer-to-peer enabled PCI-E communications channel between the device systems. Once desired rendering processing operations have been performed on the decrypted content, the rendering subsystem may encrypt the rendered content before transmission to an associated display device for presentation.

Claims

1. A method for securely communicating protected content signals within an information handling system, comprising:

authenticating, by a signal source, a content receiver operable to process a protected content signal;

communicating a protected content signal from the signal source to the authenticated content receiver;

removing protection from the protected content signal;

authenticating a rendering system operable to perform at least one rendering processing operation on a received unprotected content signal;

transferring the unprotected content signal from the content receiver to the authenticated rendering system over a peer-to-peer enabled peripheral component interconnect-express (PCI-E) data channel;

encrypting a content signal processed for rendering for transmission to a display; and

transmitting the encrypted content signal to the display.

2. The method of claim 1, further comprising decrypting the protected content signal by the authenticated content receiver.

3. The method of claim 1, further comprising encrypting the content signal processed for rendering by the rendering system.

4. The method of claim 1, further comprising:

decrypting the encrypted content signal by the display; and

presenting the decrypted content signal for viewing on the display.

5. The method of claim 1, further comprising:

evaluating whether a change concerning the content receiver, the data channel or the rendering system has occurred in the information handling system; and

ceasing content processing operation in response to a determination that a change concerning the content receiver, the data channel or the rendering system has occurred.

6. An information handling system, comprising:

a peer-to-peer enabled peripheral component interconnect-express (PCI-E) data path coupling a content receiver and a rendering system; and

the content receiver operable to decrypt an encrypted content signal received from at least one content source and securely communicate the decrypted content signal to the rendering system via the peer-to-peer enabled peripheral component interconnect-express data path.

7. The information handling system of claim 6, further comprising the content receiver operable to perform at least one authentication action responsive to an authentication request from a signal source.

8. The information handling system of claim 6, further comprising the rendering system operable to perform at least one authentication action responsive to an authentication request from the content receiver.

9. The information handling system of claim 6, further comprising the rendering system operable to perform at least one rendering operation on the received decrypted content signal.

10. The information handling system of claim 6, further comprising the rendering system operable to encrypt a content signal processed by the rendering system prior to transmission of the processed content signal to a display.

11. The information handling system of claim 6, further comprising the peripheral component interconnect-express data path including a PCI-E link coupling the content receiver to an I/O hub, the I/O hub coupled to a memory hub and a PCI-E link coupling the memory hub to the rendering system.

12. The information handling system of claim 6, further comprising the PCI-E data path including a PCI-E link coupling the content receiver to an I/O hub and a PCI-E connector extension coupling the I/O hub to the rendering system.

13. The information handling system of claim 6, further comprising the PCI-E data path including a PCI-E link coupling the content receiver to an I/O hub and a PCI-E cable connection coupling the I/O hub to the rendering system.

14. The information handling system of claim 6, further comprising at least one of the content receiver and the rendering system operable to detect a change in the rendering system and content receiver respectively and disable content signal communications in response to a detected change.

15. A content viewing system including at least one display and an information handling system, comprising:

a content receiver associated with the information handling system and operable to receive a content signal from at least one content signal source;

a rendering system associated with the information handling system and operable to perform at least one rendering processing operation on a content signal received from the content receiver; and

a secure peer-to-peer enabled data path coupling the content receiver to the rendering system, the secure data path operable to communicate an unencrypted content signal from the content receiver to the rendering system.

16. The content viewing system of claim 15, further comprising a peripheral component interconnect-express (PCI-E) link operating in a peer-to-peer enabled mode forming at least a portion of the secure data path coupling the content receiver to the rendering system.

17. The content viewing system of claim 15, further comprising the content receiver operable to detect an alteration in at least one of the rendering system and the secure peer-to-peer enabled data path and disable communication of content signals from the content receiver.

18. The content viewing system of claim 15, further comprising the rendering system operable to detect an alteration in at least one of the content receiver and the secure peer-to-peer enabled data path and disable communication of content signals from the content receiver.

19. The content viewing system of claim 15, further comprising the content receiver operable to cooperate in an authentication operation between the content receiver and at least one signal source.

20. The content viewing system of claim 15, further comprising the rendering system operable to cooperate in an authentication operation between the content receiver and the rendering system.

21. The content viewing system of claim 15, further comprising the content receiver operable to receive an encrypted content signal from the signal source and decrypt the encrypted content signal prior to communication of the unencrypted content signal to an authenticated rendering system over the secure peer-to-peer enabled data path.

22. The content viewing system of claim 15, further comprising the rendering system operable to perform one or more rendering processing operations on the received unencrypted content signal, encrypt the content signal processed for rendering and communicate the encrypted content signal to the display.

23. A content receiver for use in an entertainment enabled information handling system, comprising:

a communications port operable to receive a protected content signal from at least one signal source;

a communications port operable to communicate a received content signal to a rendering system; and

the content receiver operable to perform at least one form of decryption on the protected content signal, access a peer-to-peer enabled peripheral component interconnect-express (PCI-E) data path between the content receiver and the rendering system, and communicate the decrypted content signal to the rendering system over the peer-to-peer enabled PCI-E data path.

24. The content receiver of claim 23, further comprising the content receiver to cooperate with the signal source for purposes of verifying an authentication of the content receiver to receive the protected content signal.

25. The content receiver of claim 23, further comprising the content receiver operable to authenticate the rendering system as an approved receiver of the decrypted content signal.

26. The content receiver of claim 23, further comprising the content receiver operable to decrypt a plurality of forms of protected content signal encryption schemes.

27. The content receiver of claim 23, further comprising the content receiver operable to detect an alteration in the information handling system and to disable communication of decrypted protected content signal in response to a detected alteration in the information handling system.