DEVICE AND METHOD FOR ADIP(ADDRESS IN PREGROOVE) SIGNAL DEMODULATION

摘要

PURPOSE: A device and a method for ADIP signal demodulation are provided to demodulate modulated ADIP signals to extract address information with a simple element structure. CONSTITUTION: A device for ADIP signal demodulation includes a PLL(Phase Locked Loop:10), a delay part(12) and a latch part(14). The PLL generates phase synchronized signals(pwb) and clocks having frequency and phase equal to the modulated ADIP signals. The delay part phase-delays the phase synchronized signal input from the PLL in response to a delay control signal and outputs the phase-delayed signal. The latch part latches the modulated ADIP signal in response to the phase-delayed result from the delay part and outputs the latched one as a demodulated ADIP signal.