Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Patent
1992-09-08
1993-08-17
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
360 65, G11B 509
Patent
active
052374645
ABSTRACT:
A circuit for slimming signals read signals from a read/write head of a rotating disk data storage device. A low-pass filter and a high-pass filter are connected in parallel to the read signal from the read/write head. These filters each have a variable gain amplifier connected to their respective output ports. The gain of each of the variable gain amplifiers is programmably adjusted in accordance with preselected criteria. A summing circuit is connected to the outputs of the variable gain amplifiers to generate a slimmed read signal. A multi-pole low pass filter has an input port coupled to the output port of the summing circuit.
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Cronch Robert D.
Duffy Dennis D.
Canney Vincent P.
Seagate Technology Inc.
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