Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Patent
1997-07-03
1998-10-20
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
360 46, 360 62, G11B 502, G11B 509, G11B 1512
Patent
active
058255710
ABSTRACT:
A circuit for input switching for a read channel is described. The present invention suppresses unwanted signals at the input of a read channel. The present invention uses an open impedance switching circuit to inhibit AC transients during DC bias restoration. One embodiment of the present invention uses a low impedance switching circuit to provide rapid restoration of DC bias levels. Coordination of the operation of the open impedance switching circuit and the low impedance switching circuit is provided to maximize suppression of unwanted signals.
REFERENCES:
patent: 5446601 (1995-08-01), Fukuta
"Microelectronics" Millman et al., 1987, pp. 167-169.
Asakawa Gary J.
Sandusky Randall L.
Brady III Wade James
Donaldson Richard L.
Neal Regina Y.
Psitos Aristotelis M.
Swayze, Jr. W. Daniel
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