OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE

摘要

PURPOSE:To rapidly obtain optimum recording power at each optical disk. CONSTITUTION:By a controller 103, plural recording power in one sector are set to a laser control circuit 110 in a test zone, and the amplitude of a laser driving signal 116 is changed according to the recording power and the recording power are changed stepwise in one sector to perform recording. Thereafter, the recording power whose amplitude data measured by a signal amplitude measuring circuit 109 is the maximum is judged as the optimum recording power.