Abstract

For high density recording, it is important to record small marks under precise control of mark edges and also to detect them precisely. For example, some proposed methods are magnetic field modulation recording (MFM) with pulsed light, an optical head using a short wave length laser, partial response most likely hood detection (PRML) and a low noise substrate. Especially, the magnetic super resolution (MSR) method is one of the strongest technologies in order to improve readout resolution by the MO media.

© 1996 Optical Society of America