This patent application is assigned to Nagravision S.a.
The following quote was obtained by the news editors from the background information supplied by the inventors: "The IP protocol is today widely used to distribute multimedia contents such as audio, video. Huge database are accessible on-line and allow to stream live or on-demand content. These contents are streamed using Internet communication protocol, in unicast or multicast mode.
"In order to develop rapidly this offer, the providers are using widely accepted standard and rely on a software based security to protect their contents. Even if they accept a limited security level, they want to avoid the deployment of particular and expensive hardware such as set-top-boxes and/or CAM (Conditional Access Module) devices.
"Document U.S. Pat. No. 7,406,598 related to a method and system for secure content distribution discloses a system on a chip (SOC) device comprising external outputs, and external inputs. A first secure storage location is operably decoupled from all of the external outputs of the SOC device during a normal mode of operation. By being decoupled from all external outputs, representations of the data stored at the first secure device are prevented from being provided to the external outputs. A decryption engine is also included on the system on a chip, comprising a first data input, and a private key input coupled to a first portion of the first secure storage location, and an output coupled to a second secure location. The decryption engine is operable to determine decrypted data from data received at the first data input based upon a private key received at the private key input. The decryption engine is further operable to write the decrypted data only to the first secure memory location and the second secure location. The system further comprises a descrambler having an output coupled to a watermark module operable to provide a watermark to image data from the output of the descrambler."
In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "The present invention aims to address the issue of deploying costly hardware by proposing a content protection layer with an easy distribution capability to clients.
"The aim is achieved by an network device for descrambling an access controlled audio/video content stream, said network device being configured to be connected to a network router is characterized in that it comprises: a memory to store a unique address UA specific to the network device, a network input/output interface, a descrambler to descramble the audio/video content stream, a watermark engine configured to watermark the descrambled audio/video content stream according to the unique address UA,
"A further object of the invention is a method to access scrambled audio/video content stream via a IP network by using a multimedia reception device connected to a network router associated to a network device, said network device being identified by a unique address stored in a memory of said network device, the method comprising steps of: selecting a scrambled audio/video content stream on a list of scrambled audio/video content displayed by the multimedia reception device, said audio/video content stream being made available, on the IP network by at least one content providers server, notifying by the multimedia reception device the network device on the selected audio/video content stream, connecting the network device to the content provider server to obtain the selected scrambled audio/video content stream, securely connecting the network device to a conditional access system server for sending the unique address to said server, obtaining an access right to the selected scrambled audio/video content stream, descrambling by the network device, the scrambled audio/video content stream by using the obtained access right, watermarking all or a part of the descrambled audio/video content stream in order to embed the unique address identifying the network device, so as to obtain a personalized descrambled audio/video content stream, sending said personalized descrambled audio/video content stream to the multimedia reception device.
"The network device preferably in form of a removable hardware dongle comprises an Ethernet connection allowing plugging it into an appropriate Ethernet connector of the router. The dongle is in charge of communicating with a server, requesting the content desired by the user, providing its unique address UA, receiving the protected content, removing the protection, adding the watermark and supplying the watermarked content to the multimedia reception device via the Ethernet network.
"Although the dongle of the present invention has some features common to the system on chip of document U.S. Pat. No. 7,406,598, it is further adapted to solve the problem of live streaming of media content over Ethernet connection or IP port. Furthermore, the system on chip of document U.S. Pat. No. 7,406,598 is limited to be used for content distribution where external inputs and outputs are secured storage location.
BRIEF DESCRIPTION OF THE DRAWINGS
"The invention will be better understood with the following detailed description, which refers to the attached figures given as non-limitative examples.
"FIG. 1 shows a block diagram of a local mode to access a content stream by a multimedia reception device connected to a network router associated to a network device.
"FIG. 2 shows a block diagram of a roaming mode to access a content stream by a multimedia reception device connected to a network router associated to a network device."
URL and more information on this patent application, see: Conus, Joel; Nicolas, Christophe. Ethernet Decoder Device and Method to Access Protected Content. Filed
Keywords for this news article include: Ethernet, Networks, Nagravision S.a..
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC
Most Popular Stories
- Koch Brothers Step up Anti-Obamacare Campaign
- Obama Administration Releases Proposal to Regulate For-Profit Colleges
- Elizabeth Vargas' Husband Marc Cohn Addresses Rumors
- Keurig Adds Peet's coffee, Alters Starbucks deal
- Quiznos Files for Chapter 11
- U.S. to Relinquish Gov't Control Over Internet
- Vybz Kartel Convicted of Murder
- FDIC Sues Big Banks Over Rate Manipulation
- SoCalGas Reaches Record Spend on Diversity Suppliers
- U.S. Consumer Sentiment Falls in Early March