Patent ID: 7693016
Filing Date: 2010-04-06
Classification: G11B

Abstract:
1. An optical recording method in which when an optical recording apparatus records information by irradiating a laser beam to a recording medium having a plurality of layers including one recording layer and another recording layer, the optical recording apparatus determines a recording condition by recording and reproducing test information with respect to a test area of the one recording layer and records the information on the recording medium by irradiating the laser beam to the recording medium on the basis of the determined recording condition, wherein the optical recording apparatus stores a data table in which reference data of plural types of recording mediums are accumulated where the reference data are obtained by correlating predetermined physical characteristic values having a correlation with recording conditions of at least the one recording layer and the another recording layer with the recording conditions, said method comprising: recording and reproducing the test information with respect to the one recording layer; extracting the recording condition suitable for recording the information on the one recording layer on the basis of a test result of the recording and reproducing; detecting a physical characteristic value of the one recording layer having a correlation with the extracted recording condition; detecting a physical characteristic value of the another recording layer; extracting reference data from the data table associated with a recording medium which corresponds nearly or exactly to the physical characteristic value detected in a first characteristic value detecting step, and the physical characteristic value detected in a second characteristic value detecting step, wherein the extracted reference data is read from the reference data stored in the data table when the recording medium exactly corresponds to at least one of the detected physical characteristic values, and wherein the extracted reference data is derived from the reference data stored in the data table when the recording medium does not exactly correspond to at least one of the detected physical characteristic values; and setting the recording condition defined by the extracted reference data as the recording condition of the recording medium as an information recording target.