Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Reexamination Certificate
2007-11-20
2007-11-20
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
C326S081000
Reexamination Certificate
active
11637084
ABSTRACT:
A level shifter circuit includes first and second reference potential supply lines; first and second output potential supply circuits each connected between the first and second reference potential supply lines; first and second input lines; first and second output lines; and a stress test circuit which functions to, during normal operation, when the first input signal and the second input signal are input to the first input line and the second input line, output the first output signal and the second output signal having respectively different potentials for the first output line and the second output line, and during the stress test, when the first input signal and the second input signal are input to the first input line and the second input line, output signals having identical potentials from the first output line and the second output line.
REFERENCES:
patent: 5473567 (1995-12-01), McClure
patent: 6064227 (2000-05-01), Saito
patent: 6633192 (2003-10-01), Tsuchiya
patent: 2002/0153934 (2002-10-01), Yoon
patent: 2004/0227557 (2004-11-01), Ishikawa et al.
patent: 2002-084184 (2002-03-01), None
Oki Electric Industry Co. Ltd.
Studebaker Donald R.
Tra Quan
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