Single revolution disk sector formatter

Details Single revolution disk sector formatter Single revolution disk sector formatter

1984-05-25

1985-11-19

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

G11B 509

Patent

active

045545987

ABSTRACT:
A track of a disk device is formatted on a single revolution of the disk by using a read only memory (ROM) to store control codes and a random access memory (RAM) to store address field and data field bytes. A DMA controller simultaneously addresses ROM and RAM. Control codes are read into a control first in-first out memory and data codes are read into a data first in-first out memory. The control codes are applied to a decoder whose output signals control cyclic redundancy check and error detection and correction logic as well as the data first in-first out memory. The serial output from both the data first in-first out memory and the cyclic redundancy check logic are written on disk track.

REFERENCES:
patent: 4494156 (1985-01-01), Kadison et al.

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