Electronic digital logic circuitry – Multifunctional or programmable – Sequential or with flip-flop
Reexamination Certificate
2005-06-10
2009-10-13
Barnie, Rexford N (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Sequential or with flip-flop
C327S241000
Reexamination Certificate
active
07602215
ABSTRACT:
The invention provides a shift register which can operate normally while suppressing a delay of signal and a rounding of waveform. The shift register of the invention includes a plurality of stages of flip-flop circuits each of which includes a clocked inverter. The clocked inverter includes a first transistor and a second transistor which are connected in series, a first compensation circuit including a third transistor and a fourth transistor which are connected in series, and a second compensation circuit including a fifth transistor and a transmission gate. According to the first compensation circuit, a timing at which a signal outputted from the flip-flop circuit rises or falls can be controlled in synchronization with an output of two stages before. The second compensation circuit can control a clock signal input can be controlled.
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Anzai Aya
Osame Mitsuaki
Barnie Rexford N
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Tran Thienvu V
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