Patent ID: 7512052

Claim:
A data recording method comprising: recording data in a format area of a phase-change rewritable optical disc by irradiating the phase-change rewritable optical disc with a first light beam at a linear recording speed which is maximum for the phase-change rewritable optical disc to initialize the phase-change rewritable optical disc; and recording data in a user area of the phase-change rewritable optical disc by irradiating the phase-change rewritable optical disc with a second light beam at a linear recording speed slower than the maximum linear recording speed so that recorded signals in the user area have jitter not greater than jitter of recorded signals in the format area, wherein intensity of the second light beam irradiated for recording the data in the phase-change rewritable optical disc is adjusted so that the recorded signals in the user data area have an amplitude smaller than an amplitude of the recorded signals in the format area, and wherein an amplitude ratio of the amplitude of the recorded signals in the user data area to the amplitude of the recording signals in the format area is from 0.55 to 0.65.