| 摘要 |
PURPOSE:To prevent the synchronizing step-out of a clock signal of a demodulator and the synchronizing step-out of frame of a reception terminal equipment due to the interruption and switching of an input data by using the output of the 1st phase locked loop circuit to apply the code conversion of a digital data signal and using the output of the 2nd phase locked loop circuit so as to apply multiplexing to a code-converted signal. CONSTITUTION:The titled equipment consists of the 1st phase locked loop 27 comprised of a phase comparator 18, an amplifier 19, a loop filter 20 and a voltage controlled oscillator 21 and of the 2nd phase lockedloop 28 comprised of a phase comparator 23, an amplifier 24, a loop filter 25 and a voltage controlled oscillator 26. Thus, the output of the 1st phase locked loop circuit 27 is used to apply code conversion to a digital data signal and the 2nd phase locked loop circuit 28 is used to apply multiplexing the code-converted signal. |
