Patent ID: 8289829

Claim:
An information recording medium, comprising: a track on which a data sequence including a plurality of recording marks and a plurality of spaces provided between the plurality of recording marks is recordable; and a recording condition recording area in which a recording condition of recording pulses for recording the data sequence on the track is recordable; wherein: where a recording mark which is included in the data sequence and is to be formed on the track based on the recording condition is a first recording mark, when a length of the first recording mark is longer than a prescribed length, the recording condition of the recording pulses for recording the first recording mark is classified using only a combination of the length of the first recording mark and a length of a first space located adjacently previous or subsequent to the first recording mark, and when the length of the first recording mark is equal to or shorter than the prescribed length, all the recording conditions of the recording pulses for recording the first recording mark are classified using only a combination of the length of the first recording mark, the length of the first space, and a length of a second space not located adjacent to the first space and located adjacent to the first recording mark.