Patent ID: 6421092
Filing Date: 2002-07-16
Classification: G09G

Abstract:
An automatic picture display position adjusting circuit comprising:pixel quantity converting means for converting the number of pixels included in a video signal to a modified video signal; sync signal separating means for separating horizontal and vertical signals from said video signal; sync detecting means for detecting a variation in sync timing in at least one of said horizontal signals and said vertical signals separated by said sync signal separating means: and calculation/control means, responsive to variation detected by said sync detecting means, for a) calculating a conversion factor and transmitting said conversion factor towards said pixel quantity converting means, b) signaling for said video signal to be modified so that a picture corresponding to said modified video signal appears at a desired display position, c) detecting a displaying position of said modified video signal, d) performing a recalculation in order to shift said displaying position to said desired display position, and e) outputtinig said modified video signal at said desired display position based on said recalculation.