Optical disc drive apparatus and its control method

An optical disc drive apparatus which is mounted on a mobile apparatus and which at least reads information from a disc surface of an optical disc disposed in a predetermined position by using a pickup, the optical disc drive apparatus comprising:

• a road surface condition information storage unit for storing road surface condition information depending upon road surface conditions of a road on which the mobile apparatus travels;
• a location information acquisition unit for acquiring externally obtained location information concerning a location on the road on which the mobile apparatus is traveling;
• a control information storage unit for storing control information in association with the road surface condition, the control information being used to control reading of the information according to the road surface condition;
• and
• a control unit for judging a road surface condition associated with location information on the basis of the location information acquired by the location information and the road surface condition information stored by the road surface information storage unit, reading out control information associated with the judged road surface condition from the control information storage unit, and controlling servo characteristics of the optical drive apparatus according to the control information read out,
• wherein:
• the control information in association with the road surface condition stored by the control information storage unit comprises first control information in an ordinary condition under which the mobile apparatus can travel smoothly, second control information in a patched condition under which the road surface is patched, and third control information in a bad road condition under which there are frequently jogs on the road surface, and
• the control unit reads out the first control information, the second control information, or the third control information according to the judged road surface condition.