Patent ID: 8509044

Claim:
A recording medium which records information by forming a space and a recording mark having a predetermined length as an integral multiple of a channel clock T, the recording medium having an information area in which set values of a recording pulse used when forming the recording mark having the predetermined length are recorded as recording or reproducing control information, wherein the set values of the recording pulse used when forming the recording mark having the predetermined length include preceding space-based set values that are defined based on a preceding space formed so as to precede the recording mark and trailing space-based set values that are defined based on a trailing space formed so as to trail the recording mark, the preceding space-based set values are defined by a reference table including a first reference value that is a set value of a recording pulse corresponding to a preceding space of 5T or more and a first difference set value which is a set value of a recording pulse corresponding to a preceding space of 2T, 3T, and 4T other than the preceding space of 5T or more and which is expressed as a difference from the first reference value, and the trailing space-based set values are defined by a reference table including a second reference value that is a set value of a recording pulse corresponding to a trailing space of 5T or more and a second difference set value which is a set value of a recording pulse corresponding to a trailing space of 2T, 3T, and 4T other than the trailing space of 5T or more and which is expressed as a difference from the second reference value.