Patent ID: 7853152
Filing Date: 2010-12-14
Classification: H04B,H04L

Abstract:
1. A signal regeneration device comprising: a branch section which branches an input electrical signal which has been demodulated from a differential phase-shift modulated state, to thereby provide branched demodulated electrical signals; a first filter which performs an equalizing process of cutting high frequency components in a waveform of one of the branched demodulated electrical signals, to thereby provide an NRZ-like waveform equalized branched demodulated electrical signal; an NRZ clock recovery section which recovers a clock signal from the NRZ-like waveform equalized branched demodulated electrical signal; a second filter which subjects to waveform shaping a remaining one of the branched demodulated electrical signals, wherein the second filter has a characteristic of making an eye opening of the remaining one of the branched demodulated electrical signals greater than an eye opening of the NRZ-like waveform equalized branched demodulated electrical signal; and a data regeneration section which regenerates a data signal from the waveform shaped remaining one of the branched demodulated electrical signals and the clock signal recovered by the NRZ clock recovery section.