Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of equalizing
Patent
1992-07-07
1994-08-09
Hajec, Donald
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of equalizing
G11B 5035
Patent
active
053371984
ABSTRACT:
A waveform equalizer for processing a signal read by a magnetic head from a magnetic written medium includes a slimming circuit which, in turn, has a first delay unit for delaying the read signal, a first attenuator connected in parallel with the first delay unit, a first differentiating circuit for receiving the output from the first delay unit and the output from the first attenuator, and a resistor connected to a first delay unit side input of the first differential circuit; and a pseudo-peak elimination circuit connected in series with the slimming circuit and including a circuit for separating the from the read signal the read signal or a signal reverse in phase to the read signal, a second delay unit for delaying the separated signal, a second attenuator for attenuating the amplitude of the separated signal, and a second differential circuit for receiving the read signal and the separated, delayed and attenuated signal.
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Aoi Hajime
Kameoka Tetsuji
Nishiyama Nobumasa
Shiraishi Kazuhisa
Tanaka Masaya
Hajec Donald
Hitachi , Ltd.
Wamsley Patrick
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