MAGNETIC RECORDING/PLAYBACK DEVICE AND METHOD OF DECIDING MAGNETIC RECORDING CONDITION

摘要

A magnetic recording/playback device (100) includes a magnetic head (1), a magnetic recording medium (2), a spindle (3), a spindle motor (4), a suspension arm (5), a voice coil motor (6), and a control section (7). The control section (7) has a motor driver (8), a head amplifier (9), a read/write channel (10), a laser driver (11), and a controller (12). The controller (12) has a preliminary recording section (13), a judgment section (14), an extraction section (15), a drive-condition decision section (16), and a preliminary-recording ending section (17). A drive condition suitable for recording on the magnetic recording medium (2) is decided based on a playback-signal evaluation value obtained by using the sections above and a previously set reference value.