Patent ID: 7738335

Claim:
A method of recording information to an optical recording medium where information is recorded by forming on the optical recording medium a plurality of recording marks selected from a group consisting of several types of recording marks each with different lengths, comprising: projecting a laser beam whose power is modulated by a pulse train including one or more pulses having a level of recording power Pw, a number of the one or more pulses being determined in accordance with the types of the recording marks each with different lengths in accordance with the (1,7) RLL modulation scheme; setting a bottom power Pb of the laser beam used for forming at least one recording mark contained in said group to be higher than a reproducing power Pr of the laser beam used for reproducing information; in response to setting the bottom power Pb of the laser beam, setting a data transfer rate to be equal to or higher than 70 Mbps, thereby recording information in the optical recording medium; and setting a ratio of a recording power Pw of the laser beam used for forming the at least one recording mark and an erasing power Pe thereof to be less than or equal to 0.5.