DISPLAY DEVICE, DISPLAY DEVICE DRIVE METHOD, AND COMPUTER PROGRAM

摘要

Provided is a display device including: a still image detection unit (122) which inputs a video signal having a linear characteristic and calculates an average value of signal levels of a video signal having a linear characteristic per pixel; a storage unit (150) which successively stores the average value calculated by the still image detection unit (122); a still image judging unit (162) which judges whether an image displayed on the current screen is a still image according to a difference between the average value stored in the storage unit (150) and the average value immediately before; a coefficient calculation unit (164) which calculates a coefficient to lower the luminance of an image to be displayed on a display unit when the still image judging unit (162) has judged that a still image is displayed on the current screen; and a signal level correction unit (128) which multiplies the video signal by the coefficient calculated by the coefficient calculation unit (164).