Convergence control apparatus for video display

Details Convergence control apparatus for video display Convergence control apparatus for video display

2007-04-03

2007-04-03

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

C348S530000, C348S807000

Reexamination Certificate

active

11053909

ABSTRACT:
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.

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