Patent ID: 6438078
Filing Date: 2002-08-20
Classification: G11B

Abstract:
An optical disc apparatus for recording and reproducing information with respect to an optical disc, comprising:means for discriminating said optical disc; means for reading control information in an un-recordable area which is formed in an inner periphery of said optical disc; means for conducting focus control based on a focus error signal in a recordable area which is formed outside of said un-recordable area; determining means for determining an optimum offset value of the focus error signal in said recordable area; means for conducting adjustment in amplitude of a reproduced signal from an inner periphery of said recordable area; means for conducting test-writing in the inner periphery of said recordable area; means for conducting test-writing in an outer periphery of said recordable area; and means for conducting adjustment in amplitude of a reproduced signal from the outer periphery of said recordable area, wherein said means conducts the respective operations sequentially, so as to make said optical disc in a reproducible and recordable condition.