| 摘要 |
Disclosed are a method for recording wobble signals on an optical disc and an optical disc on which the wobble signals are recorded. After pre-coding bit data of address information to be recorded on an optical disc on the basis of at least 4 wobble units, wobble data pre-coded on at least 4 wobble units is modulated by a BPSK (Binary Phase Shift Keying) or ASK (Amplitude Shift Keying) method, and the modulated wobble data is alternately recorded on both sides of a land and/or groove of the optical disc. The case where wobble signals, recorded on sides of signal tracks of a groove and a land, in anti-phase are consecutively repeated is avoided. Further, the case where wobble signals, recorded on sides of signal tracks of a groove and a land, having different amplitudes are consecutively repeated is avoided. There are no consecutively repeated zero-level sections in a push-pull signal, thereby minimizing performance degradation of a wobble PLL (Phase-Locked Loop) and a noise generated in a reproduction RF signal.
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