Shift register, display apparatus and information display...

Details Shift register, display apparatus and information display... Shift register, display apparatus and information display...

2005-07-05

2005-07-05

Wambach, Margaret R. (Department: 2816)

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

Shift register

Compensating for or preventing signal deterioration

Reexamination Certificate

active

06914956

ABSTRACT:
A shift register includes a plurality of pulse generation portions for generating a series of pulse signals in response to a level change of inputted clock signals, and a plurality of shift pulse generation units. The plurality of shift pulse generation units has a predetermined shift pulse generation unit, with the predetermined shift pulse generation unit having a status signal generation circuit for outputting a first status signal to common wiring to which both of an earlier shift pulse generation unit and a later shift pulse generation unit are connected, and a clock supply circuit for supplying a clock signal to the pulse generation portion which belongs to the predetermined shift pulse generation unit. In addition, there is a first period in which the clock supply circuit supplies the clock signal to the pulse generation portion which belongs to the predetermined shift pulse generation unit and a second period in which the clock signal is not supplied. During the first period in which the clock signal is supplied, a status signal is inputted from the earlier shift pulse generation unit, and a status signal is not inputted from the later shift pulse generation unit.

REFERENCES:
patent: 5481749 (1996-01-01), Grondalski
patent: 6373454 (2002-04-01), Knapp et al.
patent: 10-74060 (1998-03-01), None

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