Magnetic data storage system

Details Magnetic data storage system Magnetic data storage system

1984-03-27

1986-04-01

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360 39, G11B 5102, G11B 509

Patent

active

045801789

ABSTRACT:
A magnetic data storage system includes a storage medium wherein bits of data are stored by perpendicular recording with a density sufficiently high to provide for the simultaneous presence of more than one data bit beneath the magnetic sensing element of a read head. A relative motion is imparted between the head and the medium during playback of data, and the sensed magnetic field changes produce sensor signals. The sensor signals are delayed by one or more delay elements providing delay times which differ from each other by one increment of delay, such delay increment being equal to the amount of time elapsed by a stored data bit passing a point on the pole piece of the read head. By summing together the respective delayed signals, cancellation of the spurious response is obtained so that the stored data can be retrieved.

REFERENCES:
patent: 3582918 (1971-06-01), Tieman
patent: 4443828 (1984-04-01), Sawada et al.

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