Patent ID: 7754960

Claim:
Electronic equipment comprising: a communication processing unit operative to detect an incoming call from outside; a memory operative to store a music file describing music data; a CPU operative to request playback of the music file stored in the memory in response to a signal, indicating the detection of an incoming call, from the communication processing unit; an audio output unit provided with a speaker and a processing unit, the speaker being operative to output sound based on the music file when an instruction for playback is received from the CPU and the processing unit being operative to analyze the music file when an instruction for playback is received from the CPU; and a light-emitting unit provided with a light-emitting device and a light-emission processing unit operative to control light emission from the light-emitting device in accordance with the result of analysis of the music file by the processing unit, wherein the light-emitting unit comprises: a constant-current circuit connected to the light-emitting device in series and operative to drive the light-emitting device with a current set by an instruction from the CPU; a switch element operative to receive an instruction from the CPU and turn the current generated by the constant-current circuit on and off; and a pulse width modulation circuit operative to modulate a signal for controlling on and off of the switch element by using pulse width modulation in response to an instruction from the CPU.