MR head offset correction method and magnetic disk certifier

Details MR head offset correction method and magnetic disk certifier MR head offset correction method and magnetic disk certifier

1998-01-29

1999-12-07

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

360 75, 360 7702, 360 7706, 369 55, 369 56, G11B 2736, G11B 5596

Patent

active

059989947

ABSTRACT:
A test data is written in an arbitrary point p on a non-linear characteristics portion of a hysteresis characteristics of a piezo actuator by a write head and the written test data is read out by an MR head using the point p as a reference to detect a maximum read-out voltage to thereby obtain a drive voltage of the piezo actuator corresponding thereto. From the drive voltage of the piezo actuator thus obtained, a position of the MR head whose offset is to be corrected is detected. In a magnetic disk certifier, the position of the MR head is corrected by applying the drive voltage corresponding to the maximum read-out voltage to the piezo actuator and the written test data is read out thereby. Thus, the position of the MR head on the piezo actuator becomes that of the write head when the offset correction value is detected and it becomes possible to correct the offset of the MR head with respect to the write head.

REFERENCES:
patent: 5032932 (1991-07-01), Kogure et al.

Affiliated with

Also associated with

Rating

MR head offset correction method and magnetic disk certifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with MR head offset correction method and magnetic disk certifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MR head offset correction method and magnetic disk certifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-828241