Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Patent
1976-09-22
1977-12-27
Richardson, Robert L.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
178 691, 307232, 307269, H04L 700, G11B 509
Patent
active
040657965
ABSTRACT:
A digital data decoder for recovering data from magnetic media utilizes a phase-locked loop incorporating a dual slope detecting circuit and a window margin test so as to allow for higher density data and for quality verification of the data without the use of high frequency components.
REFERENCES:
patent: 3755798 (1973-08-01), Aguirre
patent: 3979771 (1976-09-01), Taggart, Jr. et al.
Hewlett--Packard Company
Richardson Robert L.
Sherrard Michael L.
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