Disk drive apparatus with hierarchical control

Details Disk drive apparatus with hierarchical control Disk drive apparatus with hierarchical control

1987-02-26

1988-09-20

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 1312

Patent

active

047730048

ABSTRACT:
Disk drive control apparatus for controlling operation of a disk drive. The disk drive control apparatus has hierarchical control and includes control apparatus for controlling other components of the disk drive control apparatus, a controller interface receiving a bus connecting the disk drive control apparatus to a controller, a read-write processor for processing data received from or read to the disk, and data transfer apparatus for transferring data alternatively between the bus connected to the controller interface and the read-write processor, between the bus and the control apparatus, and between the read-write processor and the control apparatus. The control apparatus receives operational instructions from the controller via the bus, and responds to the operational instructions by providing internal instructions for the data transfer apparatus and the read-write processor. The read-write processor further contains a converter which responds to converter instructions provided by the read-write processor and the converter contains an encoder-decoder, which responds to encoder-decoder instructions provided by the converter. Coordination of components of the disk drive control apparatus during operation is achieved by the use of signals passed between the components.

REFERENCES:
patent: 4086659 (1978-05-01), Cizmic et al.
patent: 4103338 (1978-07-01), Cizmie et al.
patent: 4454595 (1984-06-01), Cage
"Western Digital FD179X-02", 5/80, pp. 1-24.

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