Magneto-resistive biasing methods and systems

Details Magneto-resistive biasing methods and systems Magneto-resistive biasing methods and systems

2007-09-04

2010-11-23

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

C360S067000

Reexamination Certificate

active

07839593

ABSTRACT:
A biasing device for a magneto-resistive element, including a first bias supply circuit coupled to the magneto-resistive element; and a first bias control circuit coupled to the first bias supply circuit, the first bias control circuit capable of controlling the first bias supply circuit to provide a first calibration mode bias signal during a calibration mode and a first operating mode bias signal during an operating mode, the first operating mode bias signal having a lower noise level than the first calibration mode bias signal.

REFERENCES:
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patent: 6947238 (2005-09-01), Takayoshi et al.
patent: 7558014 (2009-07-01), Voo et al.
patent: 2002/0181135 (2002-12-01), Takeuchi et al.
patent: 11007601 (1999-01-01), None
patent: 2002358603 (2002-12-01), None

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