A convergence control apparatus for a video display is provided. In the
apparatus, a convergence controller receives a vertical synchronization
signal and a horizontal synchronization signal and then outputs a
vertical convergence correction voltage and a horizontal convergence
correction voltage. An amplifier receives and amplifies the vertical
convergence correction voltage and the horizontal convergence correction
voltage. A correction current generator receives the amplified vertical
convergence correction voltage and the amplified horizontal convergence
correction voltage and then generates a vertical convergence correction
current and a horizontal convergence correction current. A switching unit
controls the vertical convergence correction voltage and the horizontal
convergence correction voltage according to the horizontal
synchronization signal.