公开(公告)号：US6043947A

公开(公告)日：2000-03-28

申请号：US113861

申请日：1998-07-10

申请人： Beverley R Gooch ,  Thomas M. Coughlin ,  David H. Davies

发明人： Beverley R Gooch ,  Thomas M. Coughlin ,  David H. Davies

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/03 ,  G11B5/49 ,  G11B5/65 ,  G11B5/66 ,  G11B5/667 ,  G11B5/33 ,  G11B5/74

CPC分类号： G11B5/66 ,  G11B5/00 ,  G11B5/012 ,  G11B2005/0034 ,  G11B5/03 ,  G11B5/4907

摘要： A magnetic storage system includes a magnetic storage medium comprising a keeper layer of relatively low permeability soft magnetic material deposited upon a magnetic storage layer or between multiple magnetic storage layers. The low permeability keeper layer may be disposed either above or below the magnetic storage layer. In the unsaturated state, the keeper layer acts as a shunt path for flux emanating from recorded transitions on the magnetic storage layer, producing an image field of the recorded transitions in the keeper. This shunt path prevents signal flux emanating from the recorded transitions from reaching the head. To read data from a recorded transition on the magnetic storage layer; a bias current is applied to windings of the head, creating a bias flux which saturates a portion of the keeper layer. Once saturated, this portion of the keeper can no longer shunt flux emanating from the recorded transition, which is the region represented by the head reproduce transducer.

摘要翻译： 磁存储系统包括磁存储介质，磁存储介质包括沉积在磁存储层上或多个磁存储层之间的相对低磁导率软磁材料的保持层。 低渗透性保持层可以设置在磁性存储层的上方或下方。 在不饱和状态下，保持层用作从存储层上的记录跃迁发出的磁通的分流路径，从而产生保持器中记录的转变的图像场。 该分流路径防止从记录的转变发出的信号通量到达头部。 从磁存储层上记录的转换中读取数据; 偏置电流施加到头部的绕组，产生使保持层的一部分饱和的偏置通量。 一旦饱和，保持器的该部分不再能够分离从由磁头再现传感器表示的区域的记录转变发出的磁通。