Video signal processing device and video signal processing method

摘要

An decomposition filter(670) includes a top-field low-frequency decomposition filter (610) and a bottom-field low-frequency decomposition filter (611) whose coefficient is obtained by vertically inverting the coefficient of the top-field low-frequency decomposition filter. It also includes a top-field high- frequency decomposition filter (620) and a bottom-field high-frequency decomposition filter (621) whose coefficient is obtained by vertically inverting the coefficient of the top-field high-frequency decomposition filter. The above-described filters are switched and used according to which an input signal is for, a top-field or a bottom-field.