METHOD AND DEVICE FOR ADJUSTING OPTICAL PICKUP

摘要

PROBLEM TO BE SOLVED: To simply and quickly adjust an optical pickup capable of recording and reproducing of different kinds of optical disks. SOLUTION: An optical disk 1 for adjustment is provided with a first signal recording layer 5 having the same physical format as a CD and a second signal recording layer 7 having the same physical format as a DVD, and EFM modulated data is recorded like concentric circles in respective signal recording layers 5 and 7, and recording areas 8 and 9 of respective signal recording layers does not overlap. Thus adjustment of an optical pickup 11 for CD reproducing and that for DVD reproducing are continuously performed without replacement of the optical disk for adjustment.