OPTICAL DATA STORING AND REPRODUCING DEVICE

摘要

PURPOSE:To quicken the rise of laser power at a recording time and to stably and acculately control laser power in an optical data storing and reproducing device using a high frequency module as a light source. CONSTITUTION:An HFM superimposition storage part 119 and an HFMOFF signal 152 are provided and the HFMOFF signal 152 is turned OFF in a fixed interval at a reproducing time before recording and the difference of the voltage laser driving voltage between the HFMON and the HFMOFF is stored in the HFM superim-position storage part 119 and added at a recording time. Further, an HFM exclusive stabilized power supply 218 is provided and the oscillation amplitude of the HFM is stabilized. Thus, the stable optical data storing and reproducing device with high accuracy and with the quick rise at the starting time of recording is obtained.