Optical recording method and medium on which recording and/or reading are performed from one side
View Patent ↗In an optical recording medium having a plurality of recording layers on which information can be recorded by irradiating a laser beam from one side thereof, an optimum recording power to each of the recording layers can be determined. The optical recording medium has a plurality of recording layers on which information can be recorded by irradiating a laser beam from one side thereof, and each of the recording layers has a power calibration area (PCA) for optimizing the intensity of the laser beam.
1. A recording method for an optical recording medium having a plurality of recording layers comprising:
an OPC recording power setting step of performing an optimum power control (hereinafter referred to as an OPC) before recording on each of said recording layers to set an OPC recording power for each of said recording layers; and
an initial recording power setting step of correcting an OPC recording power for another recording layer set at said OPC recording power setting step based on a change in actual recording power relative to an OPC recording power for one recording layer set at said OPC recording power setting step to set a recording power to be used at the time of start of recording on another recording layer.
2. The recording method for an optical recording medium according to claim 1 , wherein recording on said one recording layer and recording on said another recording layer are continuously performed.
3. The recording method for an optical recording medium according to claim 1 , wherein said OPC recording power setting step is beforehand performed on all of said recording layers before recording on said optical recording medium; and
after recording on said one recording layer said initial recording power setting step is performed before recording on said another recording layer.