Key backlight control device, portable terminal device, key backlight control method, and key backlight control program

摘要

A key backlight controller, a portable terminal, a key backlight control method, and a program which reduce a consumption current during key operation. A key backlight controller (100) comprises a key input section (120) for inputting data by key depression, a key backlight section (140) for illuminating the key input section (120), a time measurement section (130) for clocking a certain period of time from the key depression, and a key backlight operation control unit (110) for performing a key backlight control to turn off the backlight section (140) for a certain period of time during which the time measurement section (130) measures when the key depression by the key input section (120) is detected while the backlight operates.