Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1986-10-22
1988-11-29
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 78, G11B 5596, G11B 555
Patent
active
047886080
ABSTRACT:
A head positioning system for driving a magnetic disk from its current track to a target track in the radial direction of a magnetic disk. The positioning system employs a closed loop servo system including a compensation digital filter for generating a compensation signal whose frequency is synchronized with a higher frequency component of the track eccentricity. The system is effective in positioning the magnetic head at the center line of a target track with a high degree of accuracy even if the track is eccentric and in increasing the track density of the disk.
REFERENCES:
patent: 4223347 (1980-09-01), Bouwhuis et al.
patent: 4414497 (1983-11-01), Song
Cardillo Raymond F.
NEC Corporation
Robertson David L.
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