Patent ID: 8189433

Claim:
An optical recording medium driving device which performs optical recording or reproduction of information along a guide track with respect to a recording layer of a guide layer separation type optical recording medium in which a guide layer having the guide track including position information formed therein and the recording layer are separately laminated, comprising: a servo optical system which irradiates a first laser beam for servo to the guide layer through an objective lens so as to detect reflected light; a recording/reproduction optical system which irradiates a second laser beam for recording or reproduction to the recording layer through the objective lens so as to detect reflected light; a guide tracking error generation unit which generates a guide tracking error signal indicating error from a guide track center of a spot position of the first laser beam irradiated onto the guide layer based on the reflected light detected by the servo optical system; a reproduction tracking error generation unit which generates a reproduction tracking error signal indicating error from a recording track center of a spot position of the second laser beam irradiated onto the recording layer based on the reflected light detected by the recording/reproduction optical system; a tracking control unit which performs tracking servo control for moving the objective lens in a direction orthogonal to a tangential direction of the guide track so that the guide tracking error signal is decreased; an additional recording start position detection unit which detects an additional recording start position subsequent to a recorded track if the recorded track is present in the recording layer; and a tracking correction unit which generates a tracking correction signal corresponding to the reproduction tracking error signal during the tracking servo control with respect to the recorded track just before the additional recording start position, wherein the tracking control unit corrects the tracking servo control in accordance with the tracking correction signal when additional recording is started.