公开(公告)号：WO1989009466A1

公开(公告)日：1989-10-05

申请号：PCT/US1989001045

申请日：1989-03-14

Applicant: CARLISLE

Inventor： CARLISLE ,  EGGEBEEN, James, A.

IPC: G11B05/265

CPC classification number: G11B5/58 ,  G11B5/488 ,  G11B5/584

Abstract: The magnetic head (20), and method of its construction, for placing multiple, high tolerance servo information tracks (36) in evenly spaced configuration across the width of a magnetic medium (32) in a single pass of the magnetic head over the medium. The head comprises a monitoring fixture which secures a full-width write transducer (24), in tandem with a multiple-track write transducer (26). Preferably, the transducers are angularly skewed with respect to the travel direction of the magnetic medium, but are substantially parallel to each other. In operation, the magnetic medium first passes adjacent the full-width write transducer which writes servo pattern across the width of the magnetic medium at a first frequency. The magnetic medium next passes adjacent the multiple-track write transducer which writes servo information onto multiple tracks in the magnetic medium at a second frequency.

Abstract translation: 磁头（20）及其结构的方法，用于在磁性介质（32）的宽度上以均匀间隔的配置将多个高容差伺服信息轨迹（36）放置在磁头的单次通过介质上 。 头部包括与多轨写入传感器（26）串联的固定全宽写入传感器（24）的监视固定装置。 优选地，换能器相对于磁介质的行进方向成角度地倾斜，但是基本上彼此平行。 在操作中，磁介质首先穿过全宽写入传感器，该写入传感器以第一频率跨越磁介质的宽度写入伺服模式。 接下来磁介质通过多磁道写入传感器，其以第二频率将伺服信息写入到磁介质中的多个磁道上。

公开(公告)号：WO1989009467A1

公开(公告)日：1989-10-05

申请号：PCT/US1989001053

申请日：1989-03-14

Applicant: CARLISLE

Inventor： CARLISLE ,  EGGEBEEN, James, A.

IPC: G11B05/58

CPC classification number: G11B5/584 ,  G11B5/488 ,  G11B5/58 ,  G11B20/225

Abstract: A magnetic recording system using a dual layer magnetic medium with the servo tracks (30, 32) in the servo layer (26) being recorded at a first azimuth and the data tracks (38) in the data layer (28) being recorded at a different azimuth than the servo tracks (30, 32) to avoid interference between the servo and data information. The servo tracks (30, 32) are recorded with one of two frequencies, with adjacent servo tracks (30, 32) having different frequencies. The servo tracks (30, 32) are read by a first transducer (46) having the same azimuth as the servo tracks (30, 32) to generate a positioning error to control transducer position. The servo information is also used to control synchronization during reading and writing by the data transducer (48).