Video display apparatus with vertical scan velocity modulation and video displaymethod therefor

摘要

A video display apparatus comprising a vertical velocity modulation circuit for modulating the scanning speed in the vertical direction of the electron beam such that a part of the scanning line having a luminance which is not less than a predetermined value in a luminance change portion in the vertical direction moves farther apart from a part of the adjacent scanning line having a lower luminance than said predetermined value; and a frequency domain emphasis circuit for emphasizing a predetermined frequency domain of the electron beam movement control signal.