Patent ID: 7957228
Filing Date: 2011-06-07
Classification: G11B

Abstract:
1. An information recording apparatus comprising: a first judging device for judging whether or not an absolute value of a tracking error signal is greater than or equal to a predetermined first threshold value; a detecting device for detecting, as a detection angle, a rotation angle of an information recording medium when it is judged that the absolute value of the tracking error signal is greater than or equal to the first threshold value; a second judging device for judging whether or not the judgment that the absolute value of the tracking error signal is greater than or equal to the first threshold value is performed in synchronization with rotation of the information recording medium and at the same detection angle in a row; a holding device for holding tracking servo near the detection angle if it is judged by said second judging device that the judgment that the absolute value of the tracking error signal is greater than or equal to the first threshold value is performed in synchronization with the rotation of the information recording medium and at the same detection angle in a row; and a stopping device for stopping the hold of the tracking servo if it is judged by said second judging device that the judgment that the absolute value of the tracking error signal is not greater than nor equal to the first threshold value is performed in synchronization with the rotation of the information recording medium and at the same detection angle in a row, wherein each of the judgment by said first judging device, the detection by said detecting device, and the judgment by said second judging device being performed in parallel with information recording onto the information recording medium.