This International Standard aims at establishment of a unified standard concerning lower communication layer common to these applications, and do not deal with upper communication layer which depends upon individual applications. This International Standard specifies a unidirectional visible light communication protocol using visible light as a transmitter named visible light beacon system for multimedia applications. This standard does not specify the type of receivers. Dimming can be done by such methods as pulse width control or amplitude control, but the dimming is out of the scope of this standard.