公开(公告)号：US3668671A

公开(公告)日：1972-06-06

申请号：US3668671D

申请日：1969-12-15

Applicant: IBM

Inventor： EVERETT LARRY H ,  JUDY JACK H

IPC: G11B5/86 ,  G11B11/10 ,  G11B11/105 ,  G11C13/06 ,  G11B7/28

CPC classification number: G11B11/10547 ,  G11B11/10 ,  G11C13/06

Abstract: Superimposed tracks of magnetic recordings are read by use of a magneto-optic transducer. The recordings are on a magnetic tape which is passed in close proximity to a magnetic thin film layer coated to the reflecting side of a prism. The superimposed recordings on the tape are selectively transferred to the magnetic thin film by an external bias field. The bias field may be selectively energized or selectively positioned to enhance the transfer of one of the plurality of magnetic recordings to the magnetic thin film. The magnetic recording whose transfer is enhanced is the only recording which will be read by use of the magneto-optic effect.

Abstract translation: 通过使用磁光变换器来读取磁记录的叠加磁迹。 记录在磁带上，磁带紧贴在涂覆到棱镜的反射面的磁性薄膜层上。 磁带上的叠加记录通过外部偏置场选择性地转移到磁性薄膜。 偏置场可以被选择性地激励或选择性地定位以增强多个磁记录中的一个磁记录到磁性薄膜的传递。 传输增强的磁记录是通过使用磁光效应读取的唯一记录。