VIACCESS Patent applications |
Patent application number | Title | Published |
20150304716 | DEVICE FOR PROCESSING MULTIMEDIA CONTENTS IMPLEMENTING A PLURALITY OF VIRTUAL MACHINES - A multimedia content processing device for processing multimedia contents implementing a plurality of virtual machines is provided. The device is able to receive encrypted multimedia content, protected by a content protection system, and provide the multimedia content in decrypted form to a user device, including an access controller authorizing the provision of the decrypted multimedia content to the user device, a first securer for executing security services having a first associated level of security and a second securer for executing services having an associated level of security lower than the first level of security. The device includes a hypervisor able to control the execution of at least three groups of virtual machines, the groups of virtual machines being executed in a strictly separate manner, including, the first two groups being dedicated to executing services with a level of security lower than the first level of security and the third group of virtual machines able to implement security services with a first level of security and to act as trusted third parties for services of the first and second groups of virtual machines. | 10-22-2015 |
20150040226 | DATUM READING ERROR DETECTION METHOD - There is disclosed a method for detecting an error in the reading of a data item, this method includes | 02-05-2015 |
20140173084 | METHOD OF SMOOTHING THE WORKLOAD OF A SERVER - Smoothing a workload of a server responding to requests transmitted by terminals includes computing a scheduled date on which the terminal must connect with the server to transmit the request to it, activating the connection based on the date so that the second connection happens on or after it, building a workload schedule for the server according to dates, for each terminal, recording switching between active and inactive states thereof, building, for each terminal, based on the recorded switching, a profile associating, with each coming date, a probability that the terminal is active on that date, and wherein computing the date comprises selecting, based on the workload schedule and the profile, a scheduled date associated, in the workload schedule, with a forecast workload below a first threshold, and, in the profile of use of the terminal, with a probability, above a second threshold, that the terminal is active. | 06-19-2014 |
20140059349 | METHOD FOR PROTECTING A RECORDED MULTIMEDIA CONTENT - A method for protecting recorded multimedia content and enabling the recorded multimedia content to be shared between recorders and readers of multimedia content connected to one another via a wide area information transmission network. | 02-27-2014 |
20130340015 | METHOD FOR ACCESSING MULTIMEDIA CONTENT WITHIN A HOME - A method for accessing multimedia contents within a household via a network includes causing a master to build a contents log associating each content with a server, seeking a multimedia content in the log, and setting up a unicast channel between the client and a server associated with the contents sought in the log, causing the client to receive, using the channel, the content, and to play back the content, in response to connection of a new client or server to the home network or disconnection of a master from the home network, causing different apparatuses capable of functioning as a referencing server to exchange criteria for electing an apparatus to function as a referencing server, and based on the criteria, electing a new master from among the apparatuses capable of fulfilling the referencing server function, wherein in response to election, the new master functions as a reference server. | 12-19-2013 |
20130279696 | METHOD FOR TRANSMITTING AND RECEIVING A MULTIMEDIA CONTENT - A method for transmitting and receiving multimedia content having cryptoperiods scrambled by a control word includes a sender using an operating key and an encryption algorithm in a first virtual mother card to encrypt the control word to obtain a cryptogram, using a syntax constructor also in the first virtual mother card to generate an ECM that incorporates the cryptogram, and transmitting it to a terminal. The terminal receives the ECM and using a syntax analyzer contained in a first virtual daughter card associated with the mother card and uses it to locate a position of the cryptogram CW*t in the ECM. Using an operating key of a decryption algorithm in the daughter card, it then decrypts the cryptogram. Then, using the decrypted control word, it proceeds to descramble the cryptoperiod. Meanwhile, the sender occasionally changes the virtual mother card into a different virtual mother card. | 10-24-2013 |
20130145147 | Content Protection Method - A method for protecting content to be distributed to a pool of receiving terminals connected to a content distribution network and each having a specific security level depending on the technical securing means used, the method comprising the following steps:
| 06-06-2013 |
20130132725 | PROTECTION METHOD, DECRYPTION METHOD, RECORDING MEDIUM AND TERMINAL FOR SAID PROTECTION METHOD - Protecting data transmission, either multimedia or a control word, between a security processor and a terminal includes, at the security processor, building a current session key by root key diversification as a function of a parameter transmitted by the terminal, decrypting the data, encrypting it with the session key, and transmitting it, and at the terminal, decrypting it using a secret code to obtain plain data, recording, in advance, secret codes, each enabling decryption of only data encrypted by a corresponding session key obtained by root-key diversification with a parameter, which can be the transmitted parameter, receiving the parameter in a message that also contains the data to be decrypted by the security processor, and in response, selecting, from the secret codes, a code for decrypting the data encrypted with the session key, as a function of the parameter or another parameter in the message. | 05-23-2013 |
20130046969 | METHODS FOR DECRYPTING, TRANSMITTING AND RECEIVING CONTROL WORDS, RECORDING MEDIUM AND CONTROL WORD SERVER TO IMPLEMENT THESE METHODS - A method of transmitting control words to terminals that are mechanically and electronically independent of one another includes transmitting, to a terminal, an absent control word in response to a request from the terminal that contains a cryptogram corresponding to the absent control word, for the terminal, selectively determining a number of additional control words to be transmitted to the terminal as a function of a probability that security of the additional control words is compromised, and transmitting, to the terminal, in addition to the absent control word, the determined number of additional control words to enable the terminal to descramble at least one additional cryptoperiod of the multimedia content in addition to the cryptoperiod of the multimedia content that can be descrambled using the absent control word. | 02-21-2013 |
20120290831 | METHODS FOR DECRYPTING, TRANSMITTING AND RECEIVING CONTROL WORDS, STORAGE MEDIUM AND SERVER FOR SAID METHODS - A method for deciphering control words for mechanically and electronically independent terminals includes causing first and second terminals to transmit a first and second cryptograms to a control-word server, causing that server to decipher them to obtain first and second control words for enabling descrambling of first and second multimedia content broadcast simultaneously on respective first and second channels, causing the server to transmit the control word to the respective terminals, the second control word obtained by deciphering the second cryptogram before the first terminal executes a channel change, and in response to the channel change, causing the first terminal to search to determine whether the second control word has already been transmitted in advance by the server before the channel change, and if the control word has been transmitted in advance, causing the first terminal to immediately start descrambling the second multimedia content with the second control word. | 11-15-2012 |
20120096547 | METHOD FOR DETECTING AN ATTEMPTED ATTACK, RECORDING MEDIUM, AND SECURITY PROCESSOR FOR SAID METHOD - This method in which an attempt to attack a security processor is detected by the security processor itself comprises:
| 04-19-2012 |
20120033804 | METHOD AND MODULE FOR RENEWING THE CODE OF A CRYPTOGRAPHIC ALGORITHM, METHOD AND MODULE FOR GENERATING A SEED, SECURITY PROCESSOR AND RECORDING CARRIER FOR THESE METHODS - This method for renewing the code of an algorithm comprises:
| 02-09-2012 |
20120008781 | METHOD FOR ACCESS CONTROL TO A SCRAMBLED CONTENT - A method for access control to a digital scrambled content distributed to a set of installed reception terminals including one master terminal and at least one slave terminal dependent on the master terminal. In the method the slave terminal systematically or occasionally returns at least one item of information about the access condition to the master terminal through a point-to-point link, to enable the master terminal to control access of the slave terminal to the content. | 01-12-2012 |
20110280399 | Transmission, reception and identification methods, security processor and information recording medium for said methods - The invention pertains to a method for transmitting a piece of additional data from a security processor to an external apparatus, in which the transmission of the piece of additional data is done by delaying ( | 11-17-2011 |
20090316896 | METHOD FOR MANAGING THE NUMBER OF VISUALIZATIONS, SECURITY PROCESSOR AND TERMINAL FOR SAID METHOD - The invention relates to a method for managing the number of visualizations of an audiovisual content, that comprises: providing a table containing an equal number of cells and of time segments of the audiovisual content, each cell being associated in a bi-unique manner with a respective segment of the audiovisual content; when a segment of the audio-visual content is read, incrementing ( | 12-24-2009 |
20090083838 | Method and System For Assuring Security of a Transaction in a Telecommunicaiton Network - The invention relates to a method for a beneficiary to acquire a right to use a digital content in a contents distribution system comprising a commercial server ( | 03-26-2009 |
20080276083 | Method for Transmitting a Message Containing a Description of an Action to be Executed in a Receiver Equipment - The invention relates to a method for transmitting a message to a reception equipment by an operator, the message containing a description of an action to be executed in the said equipment at a time chosen by the operator. | 11-06-2008 |