Patent ID: 7349314

Claim:
An information recording method for recording information on an optical disk medium using a first power level and a second power level higher than the first power level, recording being performed at 6× speed or more, the method comprising: when a detection window width is T, recording a 3T mark with a mono pulse that is raised from the first power level to the second power level, held in its raised state, and then dropped to the first power level or less; recording a 4T mark with a mono pulse that is raised from the first power level to the second power level, held in its raised state, and then dropped to the first power level or less; and recording a mark having a length of 5T or more with a pulse that is raised from the first power level to the second power level, held in its raised state, then dropped to a third power level between the first and second power levels, held in its dropped state, then raised to the second power level, held in its raised state, and then dropped to the first power level or less, the recording with the third power level being performed for a period of 1T or more.