Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2010-10-14
2011-11-08
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S142000, C327S198000
Reexamination Certificate
active
08054113
ABSTRACT:
A power up signal generation circuit transits a power up signal at a predetermined target voltage level by providing a predetermined hysteresis characteristic to the target voltage level of a power supply voltage corresponding to the power up signal. The power up signal generation circuit includes a first voltage detection unit that detects a first target voltage level of a power supply voltage to output a detection signal. The circuit also includes a second voltage detection unit that detects a second target voltage level of the power supply voltage in response to a power up signal to output a control signal, wherein the second target voltage level is lower than the first target voltage level. A power up signal drive unit of the circuit activates the power up signal in response to the detection signal and drives the power up signal in response to the control signal.
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Donovan Lincoln
Houston Adam
Hynix / Semiconductor Inc.
IP & T Group LLP
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