公开(公告)号：EP0590089A4

公开(公告)日：1996-01-03

申请号：EP92915468

申请日：1992-06-18

申请人： AMPEX SYSTEMS CORP

发明人： MAGNUSSON STEVEN L ,  ESHEL ABRAHAM

IPC分类号： G11B5/52 ,  G11B5/53 ,  G11B15/61 ,  G11B21/04 ,  G11B21/18

CPC分类号： G11B5/534

摘要： A helical tape scanner (10) in which the stationary lower drum (16) includes a narrow upper ridge (18) which is offset from the axis of the rotatable upper drum (14) in a direction toward the end of scan. The video tape moves in a helical path from the stationary lower drum (16) over the offset upper ridge to the rotatable upper drum (16) which includes the video read/write heads (22) to transfer signals to and from the tape (12).