Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2007-12-14
2011-10-25
Ledynh, Bot (Department: 2858)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S202000
Reexamination Certificate
active
08044660
ABSTRACT:
An arrangement for influencing and/or detecting magnetic particles, and/or calibrating such an arrangement includes generating a magnetic selection field having a magnetic field strength pattern such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action. A driver changes the position in space of the two sub-zones in the region of action by magnetic drive field so that the magnetization of the magnetic particles changes locally. The arrangement includes a drive signal chain, a detection signal chain, and a receiver for acquiring detection signals that depend on the magnetization in the region of action. The magnetization is influenced by the change in the position in space of the first and second sub-zones. A compensation controller provides a compensation signal to the drive signal chain and/or to the detection signal chain by a coupler.
REFERENCES:
patent: 6501274 (2002-12-01), Ledden
patent: 10151778 (2003-05-01), None
patent: 1304542 (2003-04-01), None
patent: WO2004091392 (2004-10-01), None
patent: WO2006035359 (2006-04-01), None
patent: WO2006064405 (2006-06-01), None
Gleich Bernhard
Weizenecker Juergen
Koninklijke Philips Electronics , N.V.
Ledynh Bot
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