Optimum recording focus position detection method signal processing device for optical disks, integrated circuits, and optical disk device

摘要

Optical signal processing apparatus, the focus position determination unit for determining the optimum recording focus position based on the recording quality of the area when the test recording is changed to plural kinds of focus position is performed, the test recording in the optical disc has been performed provided. And recording status measurement unit for measuring the focus position for each recording quality of an area where the test recording on the optical disc is performed, the focus position determination unit, by using the recording quality of the focus position each obtained by recording the state measuring unit, and a determination unit according to the criteria given to whether it is suitable for use in laser power for recording the test seek the optimum recording focus position. When it is determined that it is not suitable for use for the laser power of the test recording to seek optimum recording focus position by the determining unit, optical signal processing device, so that the test recording is performed again by changing the laser power I want to control the optical pickup to.