Patent ID: 8194513

Claim:
A method for recording data in a rewritable optical data recording medium in which irradiation of a light beam is used for recording data and reproducing recorded data, the rewritable optical data recording medium comprising: a substrate; a reproducing layer, provided on a light incident side of the substrate, for reproduction of a signal from a recording mark having a mark length shorter than a resolution limit of an optical system of a reproducing apparatus corresponding to the optical information recording medium; and grooves, provided on the light incident side of the substrate, for recording the recording mark having a mark length shorter than the resolution limit of the optical system of the reproducing apparatus, and for recording an address that provides data of a reproducing point, the method comprising the step of recording the recording mark in a groove for recording the recording mark, and the step of recording the address in a groove for recording an address that provides data of a reproducing point at the time of recording the recording mark.