New patents are issued by the USPTO on Tuesdays. Both of today's Spotlight Patents concern aspects of conditional access systems used most often in cable, IPTV, and satellite media distribution systems. Assigned to Comcast, the first patent addresses techniques for reconfigurable access network encryption architecture. Assigned to CryptoExperts SAS (FR), the second patent addresses techniques for conditional access to a digital content, associated terminal and subscriber device.
9,756,026, "Reconfigurable access network encryption architecture," assigned to Comcast.
An access platform or other network elements can include multiple line cards configured to encrypt data. The platform and/or each of the line cards may receive encryption management data that conforms to a predefined encryption management data interface. The encryption management data received by a particular line card may be generated by a conditional access system device and converted to conform to the encryption management data interface by an encryption manager. Line cards may alternatively be configured for connection to separate encryption hardware components. Line cards may include a block of field programmable gate arrays or other type of programmable hardware that can be configured to execute an encryption module.
9,749,129, "Method and system for conditional access to a digital content, associated terminal and subscriber device," assigned to CryptoExperts SAS (FR).
A secure method for transmitting a control word between a server and a plurality of processing entities so as to respectively produce and utilize the control word. Preferably such a method is applied to the field of conditional access methods and systems for preventing the fraudulent use of compromised decryption keys resulting from a coalition of pirate hackers.