Patent ID: 8134306
Filing Date: 2012-03-13
Classification: G09G,H04M,H04W,Y02D

Abstract:
1. A method of indicating inactivity of a powered on, inactive electronic device having a display, the display having a backlight comprising multiple light emitting diodes (LEDs), the method comprising: tracking an inactivity time for the electronic device; comparing the inactivity time against a threshold; if the inactivity time exceeds the threshold, activating a visual notification on the electronic device to indicate inactivity of the electronic device to the user by using at least one LED of the backlight, but less than all of the LEDs of the backlight in a flashing pattern; and synchronizing the display to set only pixels in the display that have a colour component corresponding to a colour of an LED that is being activated in the flashing pattern to a transmissive state.