GRADATION CORRECTION DEVICE

摘要

A GRADATION CORRECTION DEVICE IS PROVIDED WITH A CORRECTION GAIN ADJUSTABLE AMOUNT GENERATION CIRCUIT (103) AND A CORRECTION GAIN GENERATION CIRCUIT (104), AND THE CORRECTION GAIN ADJUSTABLE AMOUNT GENERATION CURCUIT (103) OBTAINS A CORRECTION GAIN ADJUSTABLE AMOUNT WHICH IS-LINEAR IN RELATION TO A DIFFERENCE S BETWEEN A REFERENCE LUMINANCE LEVEL YB1 AND AMAXIMUM LUMINANCE LEVEL, AND GREATER GAMMA CORRECTION IS CARRIED OUT AS THE DIFFERENCE IS LARGER. THEREFORE, THE GRADATION CORRECTION DEVICE CAN PERFORM GRADATION CORRECTION USING DIGITAL FEEDBACK PROCESSING, AND FURTHERMORE, IT CAN CONTROL THE DIGITAL FEEDBACK PROCESSING WITH HIGH ACCURACY.(FIG 1)