Piece-wise linearized waveform generator for scan velocity modulation circuit

摘要

A video display deflection circuit includes a source of a periodic, first signal that varies in accordance with a position of an electron beam on a screen of a cathode ray tube. A limiter is responsive to the first signal for generating a second signal having a limited, piece-wise linearized first portion, when the first signal is outside a range of values. The second signal has a second portion that varies, when the first signal varies within the range of values. A modulator is responsive to the second signal and to a video signal for generating a modulated correction signal coupled to an auxiliary deflection winding to produce, in accordance therewith, scan velocity modulated deflection of the electron beam.