Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2008-01-01
2008-01-01
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S030000
Reexamination Certificate
active
11434960
ABSTRACT:
A low voltage differential signal (LVDS) receiver includes a first receiving unit configured to receive a reference voltage and to responsively generate a first differential signal, and a second receiving unit configured to receive a voltage developed across a variable termination resistor unit having a resistance that is adjustable based on a resistance control code in response to a reference current, and to responsively generate a second differential signal. The LVDS receiver further includes a comparing unit configured to compare the first differential signal with the second differential signal and to responsively generate a counter control signal. The LVDS receiver further includes an up/down counter configured to adjust the resistance control code in response to the counter control signal. The up/down counter is further configured to provide the resistance control code to the variable termination resistor unit. Corresponding methods are also disclosed.
REFERENCES:
patent: 7176709 (2007-02-01), Uematsu
patent: 2003/0107411 (2003-06-01), Martin et al.
patent: 2003-008421 (2003-01-01), None
patent: 10-2003-298395 (2003-10-01), None
Notice to Submit a Response for Korean Application No. 10-2005-0063323, mailed Aug. 31, 2006.
Kim Jong-Seon
Lee Jae-Youl
Nah Kyung-Suc
Yu Jae-Suk
Barnie Rexford
Myers Bigel & Sibley Sajovec, PA
Tran Thienvu
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