| 摘要 |
PURPOSE:To securely execute a data transmission by providing preamplification head and end detection circuits, a preamplification removal circuit and a preamplification addition circuit, etc., and also providing a delay circuit which absorbs a time difference corresponding to the missing length of a preamplification part. CONSTITUTION:The peaplification part head and end detection parts 8 and 10 respectively detect the head and the end of the preamplification parts included in demodulated 2 packet data and remove 12 the preamplification part so as to transmit the output to a first in.first out FIFO circuit 6. Based on the detection signal from the circuit 8 the preamplification part addition circuit 22 adds the preamplification part generated in a preamplification part generation circuit 20 to the output from the circuit 6 by normal data length. In this case in order to absorb the time difference corresponding to the head missing length of the preamplification part, the delay circuit 9 consisting of a shift register and a multiplexer is included. |
