Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-07-16
2009-10-06
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S525000
Reexamination Certificate
active
07598798
ABSTRACT:
A trimmer device for adjusting a reference signal of a target circuit is disclosed. The trimmer device includes: a switch controlling module and an impedance adjustment circuit. The switch controlling module includes: a fuse, selectively being melted according to the reference signal; and a control signal generating circuit, for generating a control signal according to the melting condition of the fuse. The impedance adjustment circuit includes: a switch module, being selectively conductive according to the control signal; and an impedance network, for determining an equivalent impedance of the impedance network according to the conducting condition of the switch module to further adjust the reference signal.
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patent: 6121820 (2000-09-01), Shishikura
patent: 6531914 (2003-03-01), Kawakubo
patent: 6703885 (2004-03-01), Fan et al.
patent: 6949971 (2005-09-01), Jang
patent: 7420407 (2008-09-01), Kim
patent: 2008/0012624 (2008-01-01), Kamatani
Donovan Lincoln
Englund Terry L
Muncy Geissler Olds & Lowe, PLLC
Realtek Semiconductor Corp.
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