APPARATUS FOR DECODING OF ADDRESS IN PRE-GROOVE SIGNAL

摘要

The present invention to simplify the complexity of the phase demodulator in the ADIP decoder, and overcome the wrong information demodulated from disturbing the wobble signal and to provide a device for decoding the correct ADIP, and a phase demodulator for processing a phase-modulated wobble signal, wherein the PLL to track the phase of the wobble signal to the phase demodulator and, via a wobble signal follow-up in the PLL to generate the running start control signal and determine the control signal generation control signal input to the phase demodulator section, a phase in the phase demodulator by a of the first bit detector to determine the ADIP data on the basis of the determination of 0 or 1 of the demodulated data result, deterioration wobble signal incompletely demodulated by the phase demodulator in case of interruption of the determination in the first bit detector the second bit to determine the ADIP data by using the accumulated result of the wobble of the phase demodulator Using a detector, and the ADIP Data-bit detected by the first detector or the second bit detector may consists of including the wobble counter indicating the phase modulating sections in accordance with the wobble.