Method of accessing a medium with low power consumption and a re

Details Method of accessing a medium with low power consumption and a re Method of accessing a medium with low power consumption and a re

1989-08-16

1992-03-24

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 61, 360 7330, 360 78130, G11B 555, G11B 1512

Patent

active

050993682

ABSTRACT:
A medium access apparatus having low power consumption includes a head driving section, an access section, a power supply section and a control signal generating section. When a medium is rotated, the head driving section causes a head to seek a destination track on the medium in accordance with an input drive signal including step pulses, the number of step pulses corresponding to a number of tracks from a current track, where the head positions, to the destination track. The access section accesses the medium through the head when power is supplied to the access section. The power supply section supplies the power to the access section and stopping the supply of the power in accordance with an input switch control signal. The control signal generating section selectively generates and outputs the switch control signal to the power supply section in accordance with the number of step pulses of the drive signal.

REFERENCES:
patent: 4688112 (1987-08-01), Shoji et al.
patent: 4700243 (1987-10-01), Tsuyuguchi et al.
patent: 4709279 (1987-11-01), Sano et al.
Toshiba Review 1988 vol. 43 No. 5, pp. 425-428 "3.5-Inch 4-M Byte Ba-Ferrite Floppy Disk and Drive Equipment".

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