Track jump control devices.

摘要

In a track jump control device a scanning head (13) for scanning the recording track of a disc-shaped recording medium (11) is moved to a target track position. A signal obtained by differentiating (25) a tracking error signal is used as speed data to perform a closed loop track jump control operation to achieve direct landing on the target track. Track jump control making use of gray code information indicating the recording tracks on the recording medium (11) on a track-by-track basis is switched (30) to track jump control making use of the differentiated tracking error signal or vice versa to realize direct landing on the target track.