Patent ID: 8039779

Claim:
An electronic device comprising: a first light source; a second light source arranged at a position different from that of the first light source; a first transmissive portion configured to be transparent to light from the first light source, and configured to correspond to a sign indicative of content of an operation; a second transmissive portion arranged at a position different from that of the first transmissive portion, and configured to be transparent to light from the second light source; a non-transmissive portion arranged between the first transmissive portion and the second transmissive portion, and configured to be opaque to the light from the first and the second light sources; a detector configured to detect electrostatic capacitance at the first transmissive portion; and a controller configured to turn either on or off the first light source and the second light source in accordance with a pattern, the pattern being that of turning on and off of the first transmissive portion and the second transmissive portion associated with a pattern of change of a state corresponding to a change in the electrostatic capacitance detected by the detector, wherein, when the detector detects the change of the state at the first transmissive portion corresponding to the change in the electrostatic capacitance while the first light source is emitting the light, the controller controls the second light source to emit the light and controls the first light source to change a light emission mode thereof.