Patent ID: 7352674

Claim:
A method for converting a wobble data to be recorded as address information on an optical disc, comprising: deciding the wobble data to be recorded as the address information; deciding a first frequency f 1 , a second frequency f 2 , a first phase and a second phase; and converting the wobble data into a wobble signal having four types of waveforms based on the decided first and second frequencies and first and second phases, wherein said first frequency and second frequency are respectively f 1 = k 2 ⁢ ⁢ T b ⁢ ⁢ and ⁢ ⁢ f 2 = p 2 ⁢ ⁢ T b (Tb=wobble data duration), where k, p=natural numbers and k−p=1, and the phase difference of said first phase and second phase is π.