The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2013
Filed:
Aug. 08, 2006
Frederic Thomas, Onex, CH;
Sebastien Robyr, Epalinges, CH;
Henri Kudelski, Grandvaux, CH;
Guy Moreillon, Bioley-Orjulaz, CH;
Philippe Desarzens, Bussigny, CH;
Frederic Thomas, Onex, CH;
Sebastien Robyr, Epalinges, CH;
Henri Kudelski, Grandvaux, CH;
Guy Moreillon, Bioley-Orjulaz, CH;
Philippe Desarzens, Bussigny, CH;
Nagravision S.A., Cheseaux-sur-Lausanne, CH;
Abstract
A method allows a broadcasted conditional access content accessible at the time of transmission to be also accessible at a later time thanks to intermediate storage on a hard disk of a user unit. The processing method includes the steps of receiving at the user unit a data stream encrypted by at least one control word, at least one control message stream containing the control words, forming an index file, each index comprising an identifier of a control message formed by the extraction of data associated to the control messages and an identifier of the part of the content to which the control message is applied; and, at the time of the deferred processing of the content, extracting at least one part of the control messages and resynchronizing the content with the control messages by the use of the index file, the identifier of the control message allowing the selection of the current control message from a set of control messages at the time of the exploitation of the content identified by the identifier of the part of the content related to this control message.