Bias-magnetic-field generating apparatus in magneto-optical info

Details Bias-magnetic-field generating apparatus in magneto-optical info Bias-magnetic-field generating apparatus in magneto-optical info

1985-09-26

1988-05-31

Cardillo, Raymond F.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 59, 360 66, G11B 502, G11B 1100

Patent

active

047486058

ABSTRACT:
A magneto-optical information system writes and erases information on and from a magneto-optical information recording medium under application of a bias-magnetic-field to the recording medium according to writing and erasing command signals. A differential amplifying circuit differentially processes the writing and erasing command signals to produce a differential output signal, and a constant current power amplifying circuit produces a stable drive current according to the differential output signal. A bias-magnetic-field generating coil is driven by the stable drive current so that a stable bias-magnetic-field is applied to the information recording medium according to the differential output signal.

REFERENCES:
patent: 3778791 (1973-12-01), Lewicki et al.
patent: 4410277 (1983-08-01), Yamamoto et al.
patent: 4539662 (1985-09-01), Hatano et al.
patent: 4586001 (1986-04-01), Pye
patent: 4670865 (1987-06-01), Hatano

Affiliated with

Also associated with

Rating

Bias-magnetic-field generating apparatus in magneto-optical info does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bias-magnetic-field generating apparatus in magneto-optical info, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bias-magnetic-field generating apparatus in magneto-optical info will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1878819