Data encoding and decoding scheme

Details Data encoding and decoding scheme Data encoding and decoding scheme

1984-09-05

1986-09-23

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 40, 360 41, G11B 509

Patent

active

046139133

ABSTRACT:
Digital data formatted on a data storage medium, in which the medium has a plurality of bit cells and the data format is such that groups of n data bits of an N-bit data word are stored over n consecutive bit cells, respectively, and a clock information bit is stored between the groups at every n+1 bit cell. A decoding apparatus includes circuitry for reading the digital data and producing an analog signal corresponding to the n data bits and the clock information bit, circuitry for reconstructing the digital data in response to the analog signal, and circuitry for producing data-ready pulses at a time corresponding to the bit cells storing the n data bits and for inhibiting the data-ready pulses at a time corresponding to the bit cell storing the clock information bit.

REFERENCES:
patent: 3641526 (1972-02-01), Bailey et al.
patent: 3815108 (1974-06-01), McGrath et al.
patent: 4053944 (1977-10-01), Dixon
"Second Generation DNC Read/Write Electronics", by R. Barey et al., HP Journal, Jan. 1984.

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