Video signal switching circuit

Abstract

PURPOSE: To obtain excellent picture quality by providing a switch comprising a transistor(TR) further to a switch input and turning on the input TR when the switch is turned off so as to fix a video signal to an L level. CONSTITUTION: A switch comprising a TR 8(9) is provided respectively to an input of switches 5, 6. Thus, a video signal not selected by using a switching signal (c) and its inverting switching signal (d) is fixed to an L level at the input of the switch. Thus, a signal being a cause to crosstalk is not inputted to a switch of the post-stage. Thus, crosstalk between the switches 5, 6 is avoided to prevent deterioration in the picture quality. COPYRIGHT: (C)1991,JPO&Japio

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    Publication numberPublication dateAssigneeTitle
    EP-2061237-A3June 03, 2009Samsung Electronics Co., Ltd.Anzeigevorrichtung und Verfahren zu ihrer Ansteuerung