| 摘要 |
<p>PURPOSE:To prevent data or the phase of ground system frame from being changed at the time of switching a current system to a stand-by system by reading out received data from memories to be buffer circuits in TDMA communication equipments based upon the redundant constitution of two systems or more only by one ground system timing generating circuit. CONSTITUTION:The ground system timing generating circuit 1 generates a reading signal 102 synchronized with a PCM frame synchronously with a ground system timing signal 101. The buffer circuits 2 to 4 in respective TDMA communication equipments #1 to #N respectively write received burst data 103 at the timing of a satellite system and received data 104 to 106 read out from respective circuits 2 to 3 are outputted from respective TDMA communication equipments. A received data selecting circuit 5 selects one of the received data 104 to 106 by a current equipment specifying signal 107 and outputs the selected data as a current received data 108.</p> |
