Patent ID: 6195134
Filing Date: 2001-02-27
Classification: H03L,H04N

Abstract:
A horizontal electron-beam deflector for generating a horizontal deflection signal to be supplied to a horizontal deflection coil for generating a magnetic field to deflect an electron beam in a horizontal direction in response to a horizontal synchronization signal extracted from a video signal, comprising:a processing means for detecting a frequency of said horizontal synchronization signal;an automatic frequency controlling means having a current generating circuit for generating a control signal, an oscillation signal generating circuit for generating an oscillation signal having an oscillation frequency in accordance with said control signal, and a horizontal synchronization pulse signal generating circuit for generating a horizontal synchronization pulse signal based on said oscillation signal and a comparison signal in response to said horizontal synchronization signal and horizontal deflection signal; anda horizontal deflection signal generating means for generating a horizontal deflection signal based on said horizontal synchronization pulse signal while controlling a peak voltage to be maintained constant based on said control signal input from said automatic frequency controlling means.