Patent ID: 6952384

Claim:
An optical disk apparatus performing either one of recording and reproduction of an optical disk in which groove-shaped groove tracks and land tracks present between the groove tracks are alternately connected to each other in a spiral shape, comprising: a recording and reproduction unit for recording a signal in both at least one continuous groove track and at least one continuous land track, and after recording the signal in both the groove track and the land track, then reproducing the signal from both the groove track and the land track; a detector for detecting a quality of the signal thus recorded and reproduced by the recording and reproduction unit; a control parameter setting unit for setting a control parameter related to at least one of the recording and the reproduction of the optical disk; and a controller for changing the control parameter set by the control parameter setting unit, repeating the recording and reproduction performed by the recording and reproduction unit and repeating the detection performed by the detector every time the control parameter is changed, and determining the control parameter based on the quality of the signal detected by the detector, wherein, as the controller is changing the control parameter, during the steps of repeating the recording and reproduction and repeating the detection, the recording and reproduction unit is able to reduce a waiting time of disk revolutions to determine the control parameter relative to a unit which records and reproduces a signal from a groove track and then records and reproduces a signal from a land track when the controller changes the control parameter.