Shift register

Details Shift register Shift register

2006-04-05

2008-12-30

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S427000, C377S064000

Reexamination Certificate

active

07471122

ABSTRACT:
A shift register includes a control unit, a signal switching unit and a buffer unit. The control unit determines whether to transfer an input signal from a first input terminal to a first output terminal according to a first control signal, and determines whether to conduct a first pre-defined voltage to a second output terminal according to a second control signal. The signal switching unit uses the signal output from the first output terminal as one of the considerations for determining whether to conduct a second pre-defined voltage to a third output terminal, and uses the second control signal as one of the considerations for determining whether to conduct the second pre-defined voltage to the first output terminal. The buffer unit outputs signal according to the signals from the first/third output terminals. Further, at least once, the second control signal is enabled after the first control signal has been enabled.

REFERENCES:
patent: 5289518 (1994-02-01), Nakao
patent: 5949271 (1999-09-01), Fujikura
patent: 6867619 (2005-03-01), Hong et al.
patent: 6885723 (2005-04-01), Yu
patent: 7027550 (2006-04-01), Lin
patent: 7079617 (2006-07-01), Osame et al.
patent: 7120221 (2006-10-01), Moon
patent: 7233308 (2007-06-01), Park

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