Single syndrome generator for forward and reverse read of high d

Details Single syndrome generator for forward and reverse read of high d Single syndrome generator for forward and reverse read of high d

1988-04-20

1989-09-26

Smith, Jerry

Excavating

360 53, G06F 1110

Patent

active

048706450

ABSTRACT:
A single diagonal syndrome generator receives first (forward reading) and second (reverse reading) sets of eight-bit data and a single vertical syndrome generator receives the first and second sets of eight-bit data from a progammable read only memory. The second set of data is reversed in bit order prior to delivery to the syndrome generators. The output of the two syndrome generators are delivered into an error processor and an error correction circuit for correcting errors in the first and second sets of eight-bit data. Upon error correction, the second set of eight-bit data is again reversed to put it in the same bit order as originally read.

REFERENCES:
patent: 3868632 (1975-02-01), Hong
patent: 4201976 (1980-05-01), Patel
patent: 4205324 (1980-05-01), Patel
patent: 4551840 (1985-11-01), Fujii
American National Standard Magnetic Tape and Cartridge for Information Interchange 18-Track, Parallel, 12.65 mm (1/2 in), 1491 cpmm ( 37 871 cpi)--Feb. 9, 1988.
Adaptive Cross-Parity (AXP) Code for a High-Density Magnetic Tape Subsystem by Arvind M. Patel.

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