Dynamic magnetic information storage or retrieval – General processing of a digital signal – Pulse crowding correction
Patent
1978-05-08
1980-05-06
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Pulse crowding correction
360 66, G11B 509, G11B 547
Patent
active
042020174
ABSTRACT:
Magnetic recording apparatus including signal equalization means for recording data so as to obtain read pulses therefrom which are symmetrical about their peak and substantially narrowed at both the base and half amplitude points whereby increased packing density may be achieved without attendant peak shift, the equalization being provided by means for generating an ac bias signal in conjunction with data transitions and associated equalizer transitions referenced to the bias signal for application to magnetic recording means.
REFERENCES:
patent: 3262124 (1966-07-01), Johnson et al.
patent: 3503059 (1970-03-01), Ambrico
patent: 3792443 (1974-02-01), Breikss
patent: 3967317 (1976-06-01), Newell
Geffon Arthur P.
Jacoby George V.
Battjer Eugene T.
Canney Vincent P.
Cleaver William E.
Sperry Rand Corporation
Truex Marshall M.
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