Electrical pulse counters – pulse dividers – or shift registers: c – Shift register – Particular transfer means
Reexamination Certificate
2006-07-18
2006-07-18
Lam, Tuan T. (Department: 2816)
Electrical pulse counters, pulse dividers, or shift registers: c
Shift register
Particular transfer means
C377S078000, C377S079000, C345S099000, C345S100000
Reexamination Certificate
active
07079617
ABSTRACT:
A low power consumption shift register which inputs a CK signal with a low voltage with almost no effect of variation in characteristics of transistors. In the invention, an input portion of an inverter is set at a threshold voltage thereof and a CK signal is inputted to the input portion of the inverter through a capacitor means. In this manner, the CK signal is amplified, which is sent to the shift register. That is, by obtaining the threshold potential of the inverter, the shift register which operates with almost no effect of variation in characteristics of transistors can be provided. A level shifter of the CK signal is generated from an output pulse of the shift register, therefore, the low power consumption shift register having the level shifter which flows a shoot-through current for a short period can be provided.
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Anzai Aya
Osame Mitsuaki
Fish & Richardson P.C.
Lam Tuan T.
Semiconductor Energy Laboratory Co,. Ltd.
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