Patent ID: 7068579
Filing Date: 2006-06-27
Classification: G11B

Abstract:
1. An optical disk recording apparatus for optically recording data onto a recordable optical disk, said optical disk recording apparatus comprising: (A) a semiconductor laser for emitting laser light to said recordable optical disk at a predetermined power level; (B) a recording-speed-information decoder for decoding data from said recordable optical disk into an item of a recording speed information and producing an output as a decoded item of recording speed information; (C) a recording-speed setting section for setting a recording speed and producing an output as a set item of recording speed information; (D) a recording speed comparator for comparing said decoded item of recording speed information with said set item of recording speed information; (E) a write strategy decoder for decoding the data from said recordable optical disk into a write strategy corresponding to said decoded item of recording speed information; (F) a recording-pattern-determination section for determining a recording pattern corresponding to said data; (G) a recording-pulse-determination section for converting said recording pattern into a recording pulse according to said write strategy, in case that said recording speed comparator detects agreement between said decoded item of recorded speed information and said set item of recording speed information; (H) a recording-power-determination section for performing an optimum power calibration (OPC) based on said analog signal, thereby determining a recording power level of said semiconductor laser; and (I) a laser driver for driving said semiconductor laser according to said recording pulse and said recording power level.