Patent ID: 7769055

Claim:
Method of transmitting, via a sending device, of a data stream made up of data packets, where at least some of said data packets include a first time reference of a first accuracy for synchronizing clocks of said sending device and at least one receiver, wherein said method includes at least the following steps: encapsulation of at least one of said data packets in one of a MPEG packet which carries an RTP packet; storing the data packet in a FIFO buffer to construct the RTP packet, wherein when an RTP is ready it is sent competes with its RTP time reference corresponding to the time at which the packet was sent; upon transmission of said transport protocol packet, adding, to said transport protocol packet, of a second time reference for all of said at least one packet in said MPEG packet, said second time reference corresponding to a time of transmission of said MPEG packet, said second time reference having a second accuracy, and correction of said first time reference, the correction of said first time reference taking into account a difference in accuracy between a first clock having a same accuracy as said first time reference and a second clock of second accuracy used by said second time references, said second clock being derived from said first clock, and wherein the second accuracy is derived from a difference between said first and second clock frequencies.