Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Reexamination Certificate
2007-04-17
2007-04-17
Korzuch, William (Department: 2627)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
C360S046000, C360S246000
Reexamination Certificate
active
10254285
ABSTRACT:
A symmetrical read element circuit for reducing electrical and magnetic noise using signal processing, such as a differential preamplifier. The circuits are symmetrically created on both sides of the read element so that the noise is balanced on both leads of the sensor element allowing substantial noise reduction by the signal processing. That is, the present invention provides symmetrical leads and pads designed for equal noise pickup, and for cancellation of the balanced noise.
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Lee Edward Hin Pong
Smith Robert Langland
Chambliss Bahner & Stophel P.C.
Hitachi Global Storage Technologies - Netherlands B.V.
Korzuch William
Lynch David W.
Negrón Daniell L.
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