Digital data encoding and reconstruction circuit

Details Digital data encoding and reconstruction circuit Digital data encoding and reconstruction circuit

1977-07-22

1979-06-05

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

G11B 502

Patent

active

041575733

ABSTRACT:
A digital data encoding and reconstruction circuit is improved by substantially eliminating erroneous and unwanted data readings due to imperfections in the magnetic recording media, excessive shoulders, electronic noise and the like by the use of pulse width discrimination. Since the time between successive transitions caused by valid data is greater than the time duration between transitions caused by erroneous signals, a counter or timer is used to determine and select only transitions caused by valid data in the read signal.

REFERENCES:
patent: 3243580 (1966-03-01), Welsh
patent: 3496557 (1970-02-01), Lowrance
patent: 3696255 (1972-10-01), King et al.
patent: 3736581 (1973-05-01), Breikss
patent: 3828167 (1974-08-01), Goldfarb
patent: 3852811 (1974-12-01), Aghazadeh
patent: 4032915 (1977-06-01), Shanks et al.

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