An optical disc apparatus provided with an automatic power control circuit
which controls power of laser light by obtaining a difference between a
value detected by a front monitor 6 and a target value individually for
reproduction power and for recording power includes: a detector 7 for
detecting light reflected from an optical disc, a sample-hold circuit 26
which performs on an output of the detector 7 a sample-hold operation at
the timing of the reproduction power; and a microcomputer 29 which
computes a reference value from the reflected light of the reproduction
power at the timing just before the start of a recording operation after
receiving a recording command until opening of a recording gate, and at
the time of recording operation an intensity of reflected light on which
a sample-hold operation is performed is compared with the reference value
to correct a target value of the reproduction power.