Noise elimination circuit of matrix display device and...

Details Noise elimination circuit of matrix display device and... Noise elimination circuit of matrix display device and...

2006-01-27

2009-06-30

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Reexamination Certificate

active

07554534

ABSTRACT:
A noise elimination circuit that eliminates a noise of a display control signal of a matrix display device, includes a rising edge detection circuit unit that detects a rising edge of a signal for eliminating a noise, a counter that performs a count operation during a predefined period of time, an initialization circuit unit that generates an initialization signal of the counter, a count enable circuit unit that generates a count allowance signal of the counter, and an initial state detection circuit unit that detects whether or not the counter is in an initial state. The counter starts the count operation from an initial value in response to a rising edge detection by the rising edge detection circuit unit. The counter is initialized again after the count operation during the predefined period of time is completed. An initial state detection signal by the initial state detection circuit unit becomes a signal from which a noise is eliminated.

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