Patent ID: 8116184

Claim:
A recording/reproducing device for (a) reading out, from an information recording medium, recording parameters which are contained in a predetermined region of the information recording medium and which are for pulse sequences for forming recording marks in accordance with recording information, and (b) performing recording operation by using the recording parameters, said recording/reproducing device comprising: an optical head for irradiating a laser onto the information recording medium so as to record/reproduce the recording marks on/from the information recording medium; a storage section for storing a first look-up table and a second look-up table which are read out from the information recording medium; and a recording parameter setting section for setting, as the recording parameters of the pulse sequences, the recording parameters read out from the first look-up table and the second look-up table, which are stored in the storage section, the pulse sequences respectively forming recording marks of a first predetermined recording mark length through a maximum recording mark length, the pulse sequences each including a top section including a top pulse and a last section including a cooling period; the first look-up table being a table which stores the recording parameters for the top sections which recording parameters are used to set the heat of front edges of the recording marks, wherein the recording parameters for the top sections are classified in accordance with at least recording mark lengths out of the recording information, and, among the recording parameters for the top sections, recording parameters for top sections for the first predetermined recording mark length through the maximum recording mark length are classified into a same group, the second look-up table being a table which stores cooling start positions for the cooling periods which cooling start positions are used to set the heat of rear edges of the recording marks, wherein the cooling start positions are classified in accordance with at least recording mark lengths out of the recording information, and, among the cooling start positions, cooling start positions of a second predetermined recording mark length through the maximum recording mark length are classified into a same group, and the second predetermined recording mark length is longer than the first predetermined recording mark length, and said optical head forming said recording marks on the information recording medium on a basis of the recording parameters set by the recording parameter setting section.