Patent ID: 6297816
Filing Date: 2001-10-02
Classification: G09G

Abstract:
An analog video signal display apparatus, comprising:a computer unit for sending an analog video signal, a vertical sync signal and a horizontal sync signal synchronized with said video signal; andan image display device for displaying an image from said video signal, said vertical sync signal, and said horizontal sync signal, wherein:said computer unit comprises a horizontal dividing signal synthesizing circuit for generating a horizontal dividing signal obtained by dividing one period of said horizontal sync signal into equal parts, and for sending a horizontal dividing sync signal obtained by superposing said horizontal dividing signal on said horizontal sync signal;said image display device comprises an analog/digital conversion circuit for converting said analog video signal to a digital video signal, a sync signal isolating circuit for reproducing and isolating the horizontal sync signal and the horizontal dividing sync signal from said horizontal dividing signal, to be used for displaying the image, a conversion clock generating circuit for generating a conversion clock for said analog/digital conversion circuit from said horizontal dividing sync signal, and an image display unit for displaying said digital video signal.