Patent ID: 6894731

Claim:
A video display deflection apparatus, comprising: a phase-lock-loop circuit including an oscillator and a phase detector, said phase detector being responsive to a synchronizing, first signal at a frequency related to a first deflection frequency and to an output signal of said oscillator for controlling a phase of said oscillator output signal, in accordance with a phase of said synchronizing, first signal; a waveform generator for generating a periodic raster distortion correction signal at a frequency related to a second deflection frequency coupled to said phase-lock-loop circuit for periodically varying said phase of said oscillator output signal, in accordance with said raster distortion correction signal; and a phase-control-loop circuit responsive to a feedback signal, generated by a deflection output transistor, and to said oscillator output signal for generating a control signal of said deflection output transistor to control a phase of a deflection current in a deflection winding, in accordance with a phase of said feedback signal.