公开(公告)号：EP1052635A1

公开(公告)日：2000-11-15

申请号：EP00109904.3

申请日：2000-05-10

申请人： SANYO ELECTRIC Co., Ltd.

发明人： Tanaka, Sayoko, c/o Sanyo Electric Co., Ltd. ,  Suzuki, Yoshihisa, c/o Sanyo Electric Co., Ltd.

IPC分类号： G11B11/105

CPC分类号： G11B11/10595 ,  G11B11/1051 ,  G11B11/1053

摘要： A magnetic domain of a predetermined length is formed on a magneto-optical recording medium (1) with the phase difference (δ) altered between the rise of a laser drive signal (LD) to generate a pulsed laser beam and the fall of a magnetic head drive signal (MD) to generate a magnetic field. A phase difference optimization circuit (13) detects an optimum phase difference (δop) corresponding to the lowest error rate from the error rate of a reproduced signal obtained by reproducing the formed magnetic domain. A magnetic head drive signal (MD) is newly generated to produce a magnetic field modulated according to a record signal based on the detected optimum phase difference (δop). According to the generated magnetic head drive signal (MD) and the first laser drive signal (LD), a magnetic field is applied to the magneto-optical recording medium (1), and a pulsed laser is directed onto the magneto-optical recording medium (1) to record a signal.

摘要翻译： 在磁光记录介质（1）上形成预定长度的磁畴，其中相位差（delta）在激光驱动信号（LD）的上升之间改变以产生脉冲激光束并且磁化 磁头驱动信号（MD）产生磁场。 相位差优化电路（13）从通过再现所形成的磁畴获得的再现信号的误码率来检测与最低误差率相对应的最佳相位差（Δop）。 新产生磁头驱动信号（MD），以根据检测到的最佳相位差（Δop）产生根据记录信号调制的磁场。 根据所生成的磁头驱动信号（MD）和第一激光驱动信号（LD），向磁光记录介质（1）施加磁场，将脉冲激光导向磁光记录介质 （1）记录信号。