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摘要

An image compression processing apparatus for compressing, displaying image signals of 4 : 3 in aspect ratio on an image display apparatus of 16 : 9 in aspect ratio. In the image compression processing apparatus, an image not jittered in the boundary between an image signal and a mask signal is obtained even in a signal without bursts in it and a non-standard signal like VCR. The horizontal pulses are interpolated with the phase difference information, the compressed signals and the mask levels are switched with the mask switching signals of the analog having the phase difference information so that images where the boundary between the image signals and the mask signals is not jittered even in signals without bursts in them and the non-standard signals like VCR can be provided.