Abstract: An integrated circuit for improved burst gate pulse separation for use in a digital video system that receives a positive composite video signal wherein horizontal, vertical and composite synchronizing signals and a burst gate pulse signal are respectively separated therefrom.

Abstract: A manufacturing method of aluminum-lithium alloy by atmospheric melting in which oxidation of lithium is minimized through improvement of degassing system under normal atmospheric melting method without using separate hermetically sealing device for isolating from atmosphere upon melting of alloy material.The method is carried out in that aluminum and other alloy elements except metal lithium are melted in atmosphere, and primary degassing process is executed in a state that surface of the molten metal is covered with a flux such as LiCl or LiF, and then metal lithium ingot covered with aluminum is added to molten metal and secondary degassing process is executed with bubbling inert gas and thereafter tertiary degassing process is executed by flowing inert gas such as argon through hermetically sealed pouring path of molten metal.