Disk subsystem using a pair of unidirectional control lines for

Details Disk subsystem using a pair of unidirectional control lines for Disk subsystem using a pair of unidirectional control lines for

1995-05-01

1998-06-09

Le, Thomas C.

395481, 395825, G06F 900

Patent

active

057650403

ABSTRACT:
Each one of intermediate control devices and n-number of disk drives are daisy-chain connected by control-information signal lines in each of downward and upward directions. Serial communication means (a driver and a receiver) sends and receives control information in the form of a bit serial between the intermediate control devices and each drive via the control-information signal lines in the downward and upward directions in accordance with a serial interface. This makes it possible to diminish the size of a magnetic disk apparatus by reducing the number of control-information signal lines and the numbers of drivers and receivers, and to cut down on power consumption so as to lower cost.

REFERENCES:
patent: 3697896 (1972-10-01), Sarkozi et al.
patent: 4183084 (1980-01-01), Lawson
patent: 4380052 (1983-04-01), Shima
patent: 4747047 (1988-05-01), Coogan et al.
patent: 5450530 (1995-09-01), Snyder et al.
"F6427H Magnetic Disk Subsystem: Hayabussa," Koike, et al., Fujitsu Sci. Tech. J., 26, 4, pp. 280-290, published in Feb. 1991.

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