Patent ID: 6298015
Filing Date: 2001-10-02
Classification: G11B

Abstract:
A method for reproducing information from a magneto-optical medium which comprises a memory layer comprised of a magnetic film and a displacement layer comprised of a magnetic film laminated with said memory layer, wherein information signals are recorded on magnetized areas on said memory layer in a predetermined direction and domain walls having arc shapes curved in the same direction are formed on borders of the magnetized areas, said method comprising the steps of:forming a high temperature area having a shape of a circle or an elongated circle in said medium by scanning the magnetized areas on said memory layer with a light spot in a direction toward convexities of said arc shapes of the magnetized areas;displacing a domain wall of the magnetized area transferred to the displacement layer toward a center of the high temperature area to magnify the magnetized area when the domain wall comes into the high temperature area; andreproducing information by detecting reflected rays of the light spot in a condition where the magnetized area transferred to the displacement layer is magnified.