| 摘要 |
PURPOSE:To perform transmission of data with high accuracy by reproducing newly a preamble part by an amount equal to the normal data length during relay of the packet data. CONSTITUTION:The packet data demodulated and outputted from a demodulator 2 is supplied to a shift register 14 and a preamble part head detecting circuit 8 respectively. A counter 25 starts counting the transmission clocks received from a modulator 4 and supplies its count value to an FIFO circuit 6, a memory 20 and a control circuit 24 respectively. Thus the data on the bit pattern of a preamble part stored previously in the memory 20 is read out. In such a way, a new preamble part is reproduced excluding the preamble part included in the received packet data. Thus a preamble part having normal data length tp is added to a data part regardless of the number of omitted bits of the received preamble part. |
