A tilt servo control device of an apparatus for recording information on
and reproducing information from an optical recording medium set in the
apparatus, the apparatus comprising an optical system for leading a laser
beam emitted from a light source to a recording surface of the optical
recording medium and a laser beam reflected by the recording surface of
the recording medium to a photo detector and a read signal generator for
generating a read signal in accordance with an output signal of the photo
detector. The tilt servo control device determines a type of the optical
recording medium, generates a tilt drive signal so as to reduce a tilt
angle at a position of the laser beam irradiating the recording surface
and an optical axis of the laser beam by a method for generating a tilt
drive signal corresponding to the recording medium type, and drives a
tilt angle adjuster for adjusting the tilt angle in accordance with the
tilt drive signal.