Patent ID: 6208320
Filing Date: 2001-03-27
Classification: G09G,H04N

Abstract:
An image correction circuit for a multi-frequency display system, comprising:a first circuit that generates a first signal based on a correction signal, on a horizontal synchronization signal, and on a vertical synchronization signal;a deflection circuit that generates a deflection signal based on the first signal and the vertical synchronization signal, the deflection circuit being operable within a range of frequencies; anda video processing circuit coupled to said deflection circuit, that receives a video input signal and the deflection signal, the video processing circuit generating an output video signal based on the deflection signal and the video input signal,wherein the deflection circuit comprises:an amplifier circuit having one input coupled to receive the vertical synchronization signal;an output circuit having a vertical deflection unit and a filter coupled in series with the vertical deflection unit, the output circuit being coupled at a first end to an output of the amplifier circuit, the output circuit providing the output signal at a second end of the output circuit.