Residual DC measuring device, residual DC measuring method and residual DC measuring program

摘要

The residual DC measuring device of the present invention receives light emitted from the display device, outputs a light-receiving signal, and measures the flicker value of the display device based on the received light signal output during display of an image for measuring flicker on the display device. The flicker value is stored in the storage unit, and then, a predetermined display image is displayed on the display device over a predetermined display time, and when the predetermined display time elapses, the flicker measurement image is displayed on the display device again, and the flicker measurement is performed. The flicker value of the display device is measured based on the received light signal output during the display of the image, and stored in the storage unit as the post-flicker value, and the post-flicker value and the initial flicker stored in the storage unit as an index value indicating residual DC. The amount of flicker change is calculated by calculating the value.