Patent ID: 8316398
Filing Date: 2012-11-20
Classification: H04N

Abstract:
1. A method of sending multimedia content in the form of digital data to at least one multimedia unit, the method comprising: separating the digital data of said multimedia content into a plurality of content segments, said content segments having a proprietary format allowing sending large content data blocks to the at least one multimedia unit; integrating service data into the plurality of content segments; preparing a program map table (PMT), the table including at least one indication of a real type of data, associated to a packet identification data and a flag, the flag having a constant value between a moment when the PMT is prepared and a moment the PMT is received by the at least one multimedia unit; modifying the PMT by transforming the indication of the real type of data into a proprietary type of data, the data indicated as of a proprietary type being stored in a memory of the at least one multimedia unit without being processed by resources of the at least one multimedia unit, the flag remaining unchanged; sending at least one content segment to the at least one multimedia unit on a first channel; storing said content segment in a memory of the at least one multimedia unit; sending said modified program map table PMT to the at least one multimedia unit; sending on a second channel synchronisation packets that indicate at least the start of the sending of a content segment, an identifier of the content to which this segment is related, an identifier of this segment and an identifier of the first channel; sending on said second channel additional synchronisation packets indicating at least an end of the sending of said content segment, an identifier of the content to which the content segment is related, a segment identifier and an identifier of the first channel; sending a matching table of correspondence between a value of the flag and the associated real type of data, the matching table being separate from the PMT; searching flag values appearing in the PMT received by the at least one multimedia unit; searching corresponding flag values in the matching table of correspondence between the flag value and the associated real type of data; and modifying the PMT by replacing the indication of the proprietary type of data of the program map table with the corresponding real type of data of the matching table.