Disk drive data path integrity control architecture

Details Disk drive data path integrity control architecture Disk drive data path integrity control architecture

1992-12-29

1995-05-02

Gordon, Paul P.

Excavating

371 377, G06F 1110

Patent

active

054126665

ABSTRACT:
A multi-layer data integrity system for use in a disk drive controller for ensuring the data integrity as data is transferred through the controller and written and fetched from the disk media. The disk drive controller is partitioned into an interface controller and a low level controller where the interface controller controls the transfer of data to and from the host processor and the low level controller controls the recording and reading from the disk media. The interface controller employs a first error encoding and detecting means for encoding the data as originally received from the host processor. The low level controller employs an error encoding and detecting means for encoding both the received data and the encoding data which was appended to the data received by the interface controller. The low level controller's error encoding and detecting means corrects errors detected in recovered data. The interface controller during a fetch operation receives the data from the low level controller and determines if the data is valid and whether the data received from the low level controller was in fact the data being sought by the interface controller.

REFERENCES:
patent: 3638182 (1972-01-01), Burton et al.
patent: 4166211 (1979-08-01), York et al.
patent: 4630272 (1986-12-01), Fukami et al.
patent: 4955022 (1990-09-01), Odaka

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