System and method for conditional access in an in-home network based on multi-network communication

• US 9,813,761 B2
• Filed: 08/31/2015
• Issued: 11/07/2017
• Est. Priority Date: 05/19/2011
• Status: Expired due to Fees

• Current Assignee: Radioxio, LLC
• Original Assignee: Maxlinear Incorporated
• Inventors: Sprague, Brian, Chang, Glenn, Gallagher, Timothy, Ramesh, Sridhar
• Primary Examiner(s): SHANG, ANNAN Q
• Application Number:
  US14/840,157
• Publication Number:
  US 20160198221A1
• Time in Patent Office: 799 Days
• Field of Search: 725 31, 725 78- 85, 725131-134, 725139-142, 709217-232
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/4341 Demultiplexing of audio and video streams
• CPC Class Codes: H04N 21/4343 Extraction or processing of packetized elementary streams [PES]
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4383 Accessing a communication channel
• CPC Class Codes: H04N 21/440209 for formatting on an optical medium, e.g. DVD
• CPC Class Codes: H04N 21/440218 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 conversion of standards in analogue television systems H04N7/01
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• CPC Class Codes: H04N 21/4408 involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
• 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 21/60 Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client , e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
• CPC Class Codes: H04N 21/61 Network physical structure; Signal processing H04B takes precedence
• CPC Class Codes: H04N 21/6106 specially adapted to the downstream path of the transmission network
• CPC Class Codes: H04N 21/6143 involving transmission via a satellite
• CPC Class Codes: H04N 21/6193 involving transmission via a satellite arrangements for data linking, networking or transporting, or for controlling an end to end session in a satellite broadcast system H04B7/18526
• CPC Class Codes: H04N 21/63 Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing real-time session protocols H04L65/1101; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/63345 by transmitting keys key distribution for secret or secure communication H04L9/08; network support of key management H04L63/06
• CPC Class Codes: H04N 21/637 : Control signals issued by the client directed to the server or network components
• CPC Class Codes: H04N 21/64 : Addressing network arrangements, protocols or services for addressing or naming H04L61/00; support for multicast or broadcast of one-way stream services H04L65/611
• CPC Class Codes: H04N 21/6402 : Address allocation for clients address allocation in data networks H04L61/50
• CPC Class Codes: H04N 21/64322 : IP
• CPC Class Codes: H04N 21/64746 : Control signals issued by the network directed to the server or the client
• CPC Class Codes: H04N 21/64761 : directed to the server

Abstract

One or more circuits for use in a transceiver that is collocated with a satellite dish, may receive a satellite signal carrying media content, and remove content protection from the received media content. After removing the first content protection, the one or more circuits may apply second content protection to the media content. The content protection applied by the one or more circuits may adhere to a different protocol, utilize different keys, and/or otherwise be distinguishable from the content protection that was removed. After applying the content protection, the one or more circuits may transmit the media content onto one or more links between the satellite dish and one or more client devices. The removal of the content protection may comprise descrambling and/or decrypting the media content. The application of the content protection may comprise scrambling and/or encrypting the media content.

Claims

1. A system comprising:

one or more circuits for use in a transceiver that is collocated with a satellite dish, said one or more circuits being operable to;

remove first content protection from content obtained from a received satellite signal;

after said removal of said first content protection, apply second content protection to said content based on local protection data, wherein at least part of said local protection data is obtained from one or more client devices;

after said application of said second content protection, transmit said content onto one or more links between said satellite dish and said one or more client devices.

2. The system of claim 1, wherein said removal of said first content protection comprises descrambling and/or decrypting said content.

3. The system of claim 1, wherein said application of said second content protection comprises scrambling and/or encrypting said content.

4. The system of claim 1, wherein said local protection data comprises, for each client device, a hardware unique identifier of said client device.

5. The system of claim 1, wherein said local protection data comprises a plurality of keys, each of said keys being associated with a different subscription level.

6. The system of claim 3, wherein said scrambling and/or encrypting of said content is performed in adherence to the DTCP-IP standard.

7. The system of claim 3, wherein said one or more circuits are operable to, prior to said transmitting said content, packetize said scrambled and/or encrypted content into one or more Internet Protocol (IP) packets.

8. The system of claim 1, wherein said one or more circuits are integrated on a common substrate with a low noise block-downconverter (LNB) of said satellite dish.

9. A method comprising:

performing by one or more circuits of a transceiver that is collocated with a satellite dish;

removing first content protection from content obtained from a received satellite signal;

after said removal of said first content protection, applying second content protection to said content based on local protection data, wherein at least part of said local protection data is obtained from one or more client devices;

after said application of said second content protection, transmitting said content onto one or more links between said satellite dish and said one or more clients.

10. The method of claim 9, wherein said removing said first content protection comprises descrambling and/or decrypting said content.

11. The method of claim 9, wherein said applying said second content protection comprises scrambling and/or encrypting said content.

12. The method of claim 9, wherein said local protection data comprises, for each client device, a hardware unique identifier of said client device.

13. The method of claim 11, wherein said scrambling and/or encrypting of said content is performed in adherence to the DTCP-IP standard.

14. The method of claim 11, comprising, prior to said transmitting said content, packetizing said scrambled and/or encrypted content into one or more Internet Protocol (IP) packets.

15. The method of claim 9, wherein said one or more circuits are integrated on a common substrate with a low noise block-downconverter (LNB) of said satellite dish.

16. A system comprising:

one or more circuits for use in a transceiver that is collocated with a satellite dish, said one or more circuits being operable to;

remove content protection from packet stream obtained from a satellite signal, said content protection having been applied by a provider of said satellite signal;

scramble and/or encrypt said packet stream based on local protection data, wherein at least part of said local protection data is obtained from one or more client devices; and

transmit said scrambled and/or encrypted packet stream onto a network link.

17. The system of claim 16, wherein said removal of said content protection comprises applying descrambling and/or decrypting to said packet stream.

18. The system of claim 16, wherein said one or more circuits are operable to encapsulate said encrypted and/or scrambled packet stream into one or more Internet Protocol (IP) packets prior to said transmission onto said network link.

19. The system of claim 16, wherein said first one or more circuits are integrated on a common substrate with a low noise block-downconverter (LNB).

20. The system of claim 16, wherein said local protection data comprises, for each client device, a hardware unique identifier of said client device.