Television signal display apparatus

摘要

A television signal display apparatus of the present invention includes a main picture quality adjustment value memory for storing a picture quality adjustment value set according to viwer's preference; a sub picture quality adjustment value memory for storing a picture quality adjustment value preliminarily set for every aspect ratio; a microcomputer for calculating an optimum picture quality adjustment value for a new aspect ratio from the picture quality adjustment values read from the main and sub picture quality adjustment value memories, setting the optimum picture quality adjustment value in a picture quality adjusting circuit and making an aspect ratio selecting circuit work. When the aspect ratio is changed, the viewer can watch a picture having the same picture quality as before and having no incongruity due to a picture quality difference produced by aspect ratio selection even for so dark picture as ABL does not work.