Patent ID: 7420617

Claim:
An image display apparatus, comprising: memory means for temporarily storing an input image signal; memory control means for controlling a readout start address for the memory means; display means to which the image signal read out of the memory means is supplied; detection means of an aspect ratio of the input image signal; and address control signal generation means to which an aspect ratio detection output is supplied from the detection means, for generating a readout start address control signal for the memory means from the input image signal, the address control signal generation means including a feature detection means for detecting a feature from said input image signal, a matrix circuit for generating an I-axis signal and a Q-axis signal from a demodulated chrominance signal, wherein said feature detection means detects a face area of a human figure from the I-axis signal and the Q-axis signal, a picture defect judgment means for judging a picture defect of the feature based on an output of the feature detection means and for shifting an image display position on an image display screen, and a screen shift amount determination means for determining, on the basis of the aspect ratio, a shift amount when the image display position is shifted by the judgment means wherein when the input image signal having an aspect ratio different from an aspect ratio of image screen display of the display means is supplied, a readout start address for the memory means is controlled on the basis of the address control signal generated by the address control signal generation means.