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    • 105. 发明授权
    • Image display apparatus
    • US07126642B2
    • 2006-10-24
    • US09956009
    • 2001-09-20
    • Aya TakechiHiroyuki KojimaNobuo Ueki
    • Aya TakechiHiroyuki KojimaNobuo Ueki
    • H04N11/20H04N7/01
    • H04N7/0122
    • There is provided an image display apparatus which automatically detects a picture defect and shifts an image region to eliminate the picture defect. The image display apparatus includes a memory unit for temporarily storing an input image signal, a memory control unit for controlling a readout start address for the memory unit, a display unit to which the image signal read out of the memory unit is supplied, a detection unit of an aspect ratio of the input image signal, and an address control signal generation unit to which an aspect ratio detection output is supplied from the detection unit and which generates a readout start address control signal for the memory unit from the input image signal. When the input image signal having an aspect ratio different from an aspect ratio of image screen display of the display unit is supplied, a readout start address is controlled on the basis of the address control signal generated by the address control signal generation unit. By this, an image region is automatically shifted and a picture defect is prevented without changing the aspect ratio of the input image signal when an object is a human figure.