Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Reexamination Certificate
2006-08-01
2006-08-01
Young, Wayne (Department: 2651)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
C360S075000
Reexamination Certificate
active
07085089
ABSTRACT:
For use with a servowriter that includes a writer core having a plurality of transistors that route servowriting current in response to a servo write signal, a write transition controller, a method of operating the same and a magnetic disk drive incorporating the controller or the method. In one embodiment, the controller includes: (1) logic circuitry, coupled to the writer core, that selectively blocks the servo write signal based on a state of a write current control signal and (2) current shunt circuitry, coupled to the writer core, that operates concurrently with the logic circuitry selectively to shunt current around the writer core based on the state.
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Agere Systems Inc.
Rodriguez Glenda P.
Young Wayne
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