Disk drive controller system

Details Disk drive controller system Disk drive controller system

1988-02-25

1991-05-14

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

G11B 509

Patent

active

050161210

ABSTRACT:
A disk drive system includes a disk controller system having separate head positioning and data transfer subsystems and supporting up to four disk drives, two of which may be removable, portable drive units and two of which may connect through a standard ST506 interface. The removable disk drives incorporate a read and write protected data cylinder for storing information such as the maintenance history of the drive, and a read only cylinder for storing a unique serial number as well as other write protected data. The system also features a high capacity, high speed sector buffer which allows continuous transfers of data to or from noninterleaved sectors and supports concurrent disk and system accesses.

REFERENCES:
patent: 4399503 (1983-08-01), Hawley
patent: 4424539 (1984-01-01), Kiedl et al.
patent: 4490782 (1984-12-01), Dixon et al.
patent: 4593354 (1986-06-01), Ushiro
patent: 4819203 (1989-04-01), Shiroyanagi et al.
patent: 4825357 (1989-04-01), Ovies et al.

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