Magnetic recording circuit having a storage feature dependent up

Details Magnetic recording circuit having a storage feature dependent up Magnetic recording circuit having a storage feature dependent up

1989-11-03

1993-06-01

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 68, G11B 509, G11B 502

Patent

active

052165531

ABSTRACT:
A magnetic recording circuit capable of recording information on a disk-shaped magnetic recording medium such as a floppy disk. In storing the information on the recording medium, a write current is varied in quantity more smaller for a more inner track and more larger for a more outer track. The current to flow to a write coil is controlled by selecting one of a plurality of current-mirror output-side transistors through which the current may flow. This selecting is performed by a track counter which realizes a storage track by counting a string of count signals corresponding to the location of the track.

REFERENCES:
patent: 2901737 (1959-08-01), Stovall, Jr.
patent: 4142210 (1979-02-01), Otobe et al.
patent: 4479152 (1984-10-01), Chi
patent: 4722010 (1988-01-01), Suzuki et al.
patent: 4866692 (1989-09-01), Saito et al.
patent: 4882639 (1989-11-01), Nasu et al.
patent: 4894817 (1990-01-01), Tanaka et al.

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