Laser Power Compensation Method for Suppressing Boundary Motion in Mark Boundary Recording of a Magneto-Optical Disk Using a Short-wavelength Laser

摘要

The present invention relates to recording and reproduction on a magneto-optical disk by a mark-border method, and more particularly, to a laser power compensation method for suppressing a boundary movement in mark boundary recording of a magneto-optical disk using a short wavelength laser.;In the laser power compensation method for suppressing the boundary movement in the mark boundary recording of the magneto-optical disk using the short wavelength laser according to the present invention, a pre-heating pulse is applied before the recording laser pulse, And recording is performed by a recording correction pulse which does not include pulse division for a period.;In the case of using the short-wavelength laser in this way, since the boundary movement due to thermal diffusion can be suppressed to the same level as the conventional method by the present invention, the circuit necessary for realizing the pulse division as in the conventional method can be greatly simplified It is effective to reduce the cost.