Patent ID: 8130607

Claim:
An apparatus for detecting a burst cutting areas on an optical disc, comprising: an optical pickup head, for emitting a laser beam to the burst cutting area of the optical disc and obtaining a radio frequency signal; a front-end processing unit, for receiving the radio frequency signal and for generating a BCA signal in response to the radio frequency signal; a sync pattern detector, for counting the BCA signal according to a reference clock and capable of detecting a sync pattern of the BCA signal and outputting a channel bit length counting value; a channel clock recovery device, for receiving the reference clock and the channel bit length counting value and for generating a channel clock according to the reference clock and the channel bit length counting value; and a data demodulator, for receiving the channel clock and the BCA signal and for transferring the BCA signal into a BCA data according to the channel clock; wherein the sync pattern detector is capable of continuously counting the BCA signal and continuously outputting a first counting value, a second counting value and a third counting value, so that the sync pattern of the BCA signal is able to be determined by the sync pattern detector when the first counting value is greater than the second counting value, the second counting value is greater than the third counting value and an absolute value obtained from subtracting the second counting value and the third counting value from the first counting value is smaller than a threshold.