An optical storage system includes an optical pickup unit movable across
an optical medium. The optical pickup unit has a light detector, a laser
diode, and a laser driver signal processor circuit. The laser driver
signal processor circuit includes a detected signal processing block for
outputting read signals corresponding to light received at the light
detector, and a read signal processing block for processing the read
signals and generating control signals or synthesis signals according to
the read signals. A control unit is coupled to the optical pickup unit
for controlling the optical pickup unit and decoding data recovered from
the optical medium.