Electrical transmission or interconnection systems – Miscellaneous systems – Rate of change responsive systems
Reexamination Certificate
2006-07-05
2008-10-21
Deberadinis, Robert L. (Department: 2836)
Electrical transmission or interconnection systems
Miscellaneous systems
Rate of change responsive systems
C716S030000
Reexamination Certificate
active
07439637
ABSTRACT:
A semiconductor circuit according to an embodiment of the invention includes: a terminal resistor circuit including a first Pch transistor; and a control circuit for outputting a control signal to a gate terminal of the first Pch transistor to control a resistance value of the terminal resistor circuit, the control circuit including: a second Pch transistor having a resistance value that is changed in the same direction as a resistance value of the second first transistor with respect to a specific parameter; and a resistor having a resistance value that is less changed than the resistance value of the second transistor with respect to the specific parameter, wherein the control circuit outputting the control signal based on a voltage between the second Pch transistor and the resistor.
REFERENCES:
patent: 6571376 (2003-05-01), Levin et al.
patent: 2-170570 (1990-07-01), None
patent: 2000-307410 (2000-11-01), None
patent: 2003-122465 (2003-04-01), None
Deberadinis Robert L.
McGinn IP Law Group PLLC
NEC Electronics Corporation
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