Method and apparatus for reducing transition time for a magnetic

Details Method and apparatus for reducing transition time for a magnetic Method and apparatus for reducing transition time for a magnetic

1995-12-13

1998-03-03

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 46, G11B 1512

Patent

active

057242011

ABSTRACT:
A device for switching a read head from a write mode to a read mode includes a voltage ramp generating circuit, generating and outputting a voltage ramp after a write operation; a variable current source for discharging an initial current of the read head, wherein a current output by the current source is controlled proportionally to the slope between the beginning of the voltage ramp and a first threshold of the ramp, the current source having an initial maximum value higher than the initial current of the head; and an accentuating circuit for accentuating the ramp slope between the beginning of the ramp and a time when the current output by the variable current source becomes equal to the initial current present in the head.

REFERENCES:
patent: 4063293 (1977-12-01), Perahia
patent: 4868691 (1989-09-01), Kawasaki
patent: 4926271 (1990-05-01), Aoki et al.
patent: 5122899 (1992-06-01), Kaji
patent: 5168395 (1992-12-01), Klassen et al.
patent: 5357379 (1994-10-01), Gower
French Search Report from French Patent Application 92 09798, filed Jul. 31, 1992.
Patent Abstracts of Japan, vol. 12, No. 002 (P652), Jan. 7, 1988, & JP-A-62164201 (Fuji Photo Film Co., Ltd. Jul. 20, 1987.
Patent Abstracts of Japan, vol. 15, No. 420 (P-1267), Oct. 24, 1991 & JP-A-3171403 (Fujitsu Ltd.) Jul. 24, 1991.

Affiliated with

Also associated with

Rating

Method and apparatus for reducing transition time for a magnetic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reducing transition time for a magnetic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing transition time for a magnetic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2254277