Power saving system for file protect and disk capacity sensors i

Details Power saving system for file protect and disk capacity sensors i Power saving system for file protect and disk capacity sensors i

1993-04-19

1994-09-06

Hajec, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

360 69, G11B 1504, G11B 1518

Patent

active

053453433

ABSTRACT:
A flexible magnetic disk drive is disclosed which operates under the control of a host system. A CMOS inverter is employed as a power saving switch, holding a file protect sensor energized only when the standard "drive select" signal from the host commands operation of the disk drive. Another CMOS inverter is provided for two disk capacity a sensors which provide signals indicative of the data storage capacity of the loaded disk cartridge. The disk capacity sensors are energized only when the drive select signal commands operation of the disk drive and when the standard "motor on" signal dictates rotation of a disk drive motor.

REFERENCES:
patent: 4626942 (1986-12-01), Shoji
patent: 4658307 (1987-04-01), Tsuyuguchi et al.
patent: 4737867 (1988-04-01), Ishikawa et al.
patent: 5155638 (1992-10-01), Aikawa et al.

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