MOBILE TERMINAL DEVICE, METHOD OF POWER SAVING CONTROL FOR MOBILE TERMINAL DEVICE AND COMPUTER PRODUCT

摘要

A mobile terminal device having a display includes an image capturing unit capturing an image at a prescribed periodical timing; an image changing detector detecting an image change exceeding a prescribed extent between the image captured at a prescribed timing and one or more of images obtained at a previous timing; and a power saving controller controlling a power saving state of the display depending on whether an image change exceeding the prescribed extent is detected.