Plasma display device with video muting function

Details Plasma display device with video muting function Plasma display device with video muting function

2006-04-25

2006-04-25

Wu, Xiao (Department: 2674)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

Reexamination Certificate

active

07034780

ABSTRACT:
A plasma display device is provided which is capable of preventing image disturbance and imposition of excessive loads even when resolution is switched. A vertical frequency counter counts vertical sync signals using system clocks and a vertical frequency comparator checks whether or not the value obtained from the counting matches up with a vertical frequency decoded value. A line number counter counts vertical sync signals using horizontal sync signals and a line number comparator checks whether or not the value obtained from the counting matches up with a line number decoded value. A dot number counter counts horizontal sync signals using analog digital clocks and a dot number comparator checks whether or not the value obtained from the counting matches up with a dot number decoded value. These values are ORed by an OR circuit and the result is output in a form of a mode monitoring detection signal.

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