Patent ID: 6295097
Filing Date: 2001-09-25
Classification: H04N

Abstract:
A video display deflection apparatus, comprising:means for producing a deflection field that varies a position of an electron beam on a screen of a cathode ray tube;a source of a video signal for displaying picture information contained in said video signal in said screen of said cathode ray tube;a source of a periodic, first signal that varies in accordance with the position of said electron beam;a limiter responsive to said first signal for generating a second signal having a limited, piece-wise linearized first portion, when said first signal is outside a range of values, said second signal having a second portion that varies, when said first signal varies within said range of values; andmeans responsive to said second and video signals for generating a correction signal coupled to said deflection field producing means to produce scan velocity modulated deflection of said electron beam.