Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Reexamination Certificate
2007-10-16
2007-10-16
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
C326S081000
Reexamination Certificate
active
10533807
ABSTRACT:
To provide a level shift circuit in which the margin of level shift operation is prevented from deteriorating when the potential difference between a first power supply and a second power supply is large. A level shift circuit for changing the signal level in a first logic circuit fed from a first power supply to the signal level in a second logic circuit fed from a second power supply, comprises: a pull-up and/or pull-down circuit fed from the second power supply for pulling up and/or pulling down the output of a level shift core circuit; and a control circuit fed from the second power supply, which receives level shift input signals and level shift output signals for controlling the pull-up and/or pull-down circuit.
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Hernandez William
Lam Tuan T.
NEC Corporation
Sughrue & Mion, PLLC
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