Termination resistance circuit

Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Bus or line termination

Reexamination Certificate

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Details

C326S026000

Reexamination Certificate

active

07986161

ABSTRACT:
A termination resistance circuit includes a control signal generator for generating a control signal whose logical value changes when a calibration code has a predetermined value, a plurality of parallel resistors which are respectively turned on/off in response to the calibration code, and a resistance value changing unit for changing the total resistance value of the termination resistance circuit in response to the control signal.

REFERENCES:
patent: 6456124 (2002-09-01), Lee et al.
patent: 6894529 (2005-05-01), Chong et al.
patent: 7230449 (2007-06-01), Dreps et al.
patent: 7268712 (2007-09-01), Sheen
patent: 7362128 (2008-04-01), Choi et al.
patent: 7463053 (2008-12-01), Chun
patent: 7495469 (2009-02-01), Park
patent: 7573288 (2009-08-01), Ayyapureddi et al.
patent: 7692446 (2010-04-01), Lee et al.
patent: 2008/0048714 (2008-02-01), Lee et al.
patent: 1020070036578 (2007-04-01), None
patent: 1020070081881 (2007-08-01), None
Notice of Preliminary Rejection issued from Korean Intellectual Property Office on Jul. 30, 2009 with an English Translation.

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