Shift register

Details Shift register Shift register

2006-04-11

2006-04-11

Lam, Tuan T. (Department: 2816)

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

Shift register

Shift direction control

C377S079000

Reexamination Certificate

active

07027551

ABSTRACT:
A shift register having a simple configuration and improved response and power consumption is disclosed. In the shift register, a plurality of stages are connected to each other in cascade and scanned in a bilateral direction. In the stages, a charger charges a first supply voltage into a first node in response to a clock signal. A discharger discharges the first node in response to a first start pulse or a second start pulse. A scan direction controller is connected between the charger and the discharger to discharge the first node into a different path in response to a scan direction control signal. An output part outputs any one of said first and second supply voltages as an output signal in response to a voltage at the first node. A latch part latches said output signal using said output signal and a clock signal inverted from said clock signal to feed back the latched output signal to the first node.

REFERENCES:
patent: 5859630 (1999-01-01), Huq
patent: 6760005 (2004-07-01), Koyama et al.

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