Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2007-05-01
2007-05-01
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S198000
Reexamination Certificate
active
10877882
ABSTRACT:
In a power-up signal generating device, a power-up signal is activated at a certain level of the power supply voltage VDD by adjusting the turn-on resistance value of the MOS transistor so that the chip reliability can be improved. The power-up signal generating device comprises a reference voltage generating unit, a bias level adjusting unit, a bias signal generating unit and a signal outputting unit. The reference voltage generating unit generates a reference voltage. The bias level adjusting unit receives the reference voltage as an input for controlling a voltage level of a bias signal in a constant level. The bias signal generating unit generates the bias signal under control of the bias level adjusting unit. The signal outputting unit outputs a power-up signal depending on the voltage level of the bias signal.
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Blakely & Sokoloff, Taylor & Zafman
Callahan Timothy P.
Hiltunen Thomas J.
Hynix / Semiconductor Inc.
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