Method and a system for time synchronisation between a control centre and several transmitters
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United States of America Patent
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Oct 8, 2013
Grant Date -
Jun 16, 2011
app pub date -
Jun 23, 2009
filing date -
Jul 4, 2008
priority date (Note) -
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Abstract
Time synchronization between a control center and transmitters in a single frequency network is provided by generating and receiving a first reference time signal with a high time and frequency accuracy in a short and long time horizon and a second reference time signal supplied to the control center with a low time and frequency accuracy in the short time horizon and a high time and frequency accuracy in the long time horizon. A transport data stream is generated and supplied to the transmitters with a time-variable data rate through the control center corresponding to a frequency of the second reference time signal. Time displacement of the transport data stream received from the control center is performed by a respective transmitter until the data packets of the transport data stream each containing a transmission time are transmitted at a correct transmission time.
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