METHOD AND DEVICE FOR RECORDING OPTICAL INFORMATION

摘要

PURPOSE:To provide the optical information recording method and its device capable of forming the pit consisting of a pit part and non-pit part having the length corresponding to the time width of a reference digital signal even when the environment at the time of information recording is changed. CONSTITUTION:The waveform of a reference digital signal A is formed by a waferorm forming circuit 10, and the voltage at the high level is gradually deteriorated from the start to the end of the high level corresponding to the heat conductivity or the like of the optical disk. An offset circuit 20 generates a signal D turning the voltage value at the low level to 0V for the prescribed period. A laser diode 35 is energized corresponding to the voltage of this signal D, emitting the laser light. The power margin at the time of recording can be increased ahd the error at the time of reproduction can be reduced.