| 摘要 |
<p>An information recording/reproducing apparatus the recording power of which can be regulated in a reduced time and which exhibits a reduced amount of consumption of the PCA. The apparatus comprises an asymmetry detecting circuit for detecting the recording state varying with the recording power from the reproduced signal picked up from the recording medium, a recording power setting circuit for performing recording power regulation, a reproduction clock generating circuit for generating a reproduction clock from the reproduced signal, a phase difference detecting circuit for detecting the phase difference between the reproduced signal and the reproduction clock, a pattern detecting circuit for detecting the pattern of the reproduced signal, a pattern phase difference averaging circuit for determining the average value of the phase difference of each pattern, a recording light-emission waveform adjusting circuit for adjusting the recording light-emission waveform according to the output of the pattern phase difference averaging circuit, and a recording power regulation execution judging circuit for controlling the recording power setting circuit not to perform the recording power regulation if the detected recording state is within a predetermined range.</p> |
