Abstract: In a getting-off support apparatus, a measurement unit measures an approaching direction and moving velocity of a mobile object, and a distance between the own vehicle and the mobile object. A getting-off operation detection unit detects getting-off operation of a passenger in the own vehicle. A control unit controls output of a notification signal in accordance with the distance and the moving velocity of the mobile object. A notification signal output unit outputs a second notification signal to the passenger. The control unit estimates a period until when the mobile object reaches the own vehicle when the getting-off operation is detected, and outputs a second notification signal in a case where for the mobile object for which the estimated period is equal to or greater than a threshold, the distance is less than a limit distance, and the moving velocity is equal to or greater than limit velocity.

Abstract: Detection is made as to at least one of a ratio between a tracking error and a focus error, and a duty cycle of an off-track signal with respect to an optical disc. A decision is made as to whether or not the optical disc is playable on the basis of the detected at least one of the ratio and the duty cycle. The ratio is a ratio of the focus error to the tracking error or a ratio of the tracking error to the focus error.

Abstract: Detection is made as to at least one of a ratio between a tracking error and a focus error, and a duty cycle of an off-track signal with respect to an optical disc. A decision is made as to whether or not the optical disc is playable on the basis of the detected at least one of the ratio and the duty cycle. The ratio is a ratio of the focus error to the tracking error or a ratio of the tracking error to the focus error.