Shift register

Details Shift register Shift register

2007-06-22

2010-06-15

Lam, Tuan (Department: 2816)

Electrical pulse counters, pulse dividers, or shift registers: c

Shift register

C377S068000, C377S069000

Reexamination Certificate

active

07738622

ABSTRACT:
A shift register is disclosed, which can prevent a multi-output caused by a coupling phenomenon, the shift register comprising at least two clock transmission lines which transmit at least two clock pulses provided with the phase difference; and a plurality of stages which are supplied with the clock pulses from the clock transmission lines, and output output-signals in sequence, wherein each of the stages comprises a pull-up switching unit which is supplied with the first clock pulse, and outputs the first clock pulse as the output-signal according to a signal state of an enable node; and a noise eliminating unit which responds to the second clock pulse of which phase is prior to that of the first clock pulse supplied to the pull-up switching unit, and supplies a start pulse externally provided or the output-signal provided from the preceding stage to the enable node.

REFERENCES:
patent: 4084106 (1978-04-01), Ullrich
patent: 6339631 (2002-01-01), Yeo et al.
patent: 6621481 (2003-09-01), Kanbara
patent: 6970530 (2005-11-01), Wang et al.
patent: 7420536 (2008-09-01), Jang et al.
patent: 2005/0008114 (2005-01-01), Moon
patent: 2007/0019775 (2007-01-01), Tsai et al.

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