Patent ID: 6052101
Filing Date: 2000-04-18
Classification: G09G

Abstract:
A circuit for driving a plasma display device for implementing gray scales on an alternating current plasma display panel (AC PDP) where M vertical electrode lines and N horizontal electrode lines are formed, said circuit comprising:a controller for digitizing analog picture data to output digital picture data and outputting various control signals according to said digital picture data and external signals;a memory for dividing one frame into X subfields according to the control signal of said controller, dividing total horizontal lines of one frame into X.multidot.Y subframes according to relative luminance ratio and then allotting Y different subframes to the respective subfields; X scanning and sustaining drivers for sequentially erasing each Y lines for every 1/2.sup.X.multidot..Y -1 frame from the first horizontal electrode lines to the last Nth horizontal electrode lines, included in Y different subframes allotted to the respective subfields, scanning the same and supplying sustain pulses for sustaining discharge in scanned horizontal electrode lines; andan address driver for receiving bit values of M digital picture data corresponding to the horizontal electrode line currently scanned by said X scanning and sustaining drivers from said memory and supplying the same to said M vertical electrode lines.