Patent ID: 7193943
Filing Date: 2007-03-20
Classification: G11B

Abstract:
1. An optical disk apparatus comprising: a light emitting element emitting a laser beam directed to a recordable optical disk; a driver rotating the optical disk; a first optimum recording power obtaining part performing a test recording on the optical disk while the optical disk is rotated by the driver and output power of the light emitting element is varied so as to obtain an optimum recording power based on a reproduction signal in an area of the optical disk on which the test recording is performed; a temperature measuring part measuring a temperature in the vicinity of the light emitting element; a memory storing the optimum recording power obtained by the first optimum recording power obtaining part and the temperature measured by the temperature measuring part when the optimum recording power is obtained such that the optimum recording power is associated with the temperature; a temperature-dependent recording power obtaining part referring to the optimum recording power and the temperature associated with the optimum recording power that are stored in the memory so as to obtain the optimum recording power according to the temperature measured by the temperature measuring part in real recording; a target recording power setting part setting the optimum recording power obtained by the temperature-dependent recording power obtaining part to a target recording power in the real recording; a second optimum recording power obtaining part causing the first optimum recording power obtaining part to obtain the optimum recording power in the real recording; and a recording power selecting part selecting, as the target recording power in the real recording, one of the optimum recording power obtained by the second optimum recording power obtaining part and the optimum recording power obtained by the temperature-dependent recording power obtaining part, wherein the target recording power setting part sets the optimum recording power selected by the recording power selecting part as the target recording power in the real recording.