Patent ID: 8742688

Claim:
A harbor lighting control apparatus comprising: a plurality of slaves each configured to perform at least one of on control, off control, and dimming control with respect to a light emitting diode (LED) array light source mounted to a lighthouse when at least one of an on control signal, an off control signal, and a dimming control signal are received, and to transmit a result of the control as acknowledge signals; and a master configured to transmit the at least one of the on control signal, the off control signal, and the dimming control signal to all of the plurality of slaves by a broadcast scheme, to transmit the at least one of the on control signal, the off control signal, and the dimming control signal to an individual slave by a unicast scheme, and to recognize operational states of the plurality of slaves by receiving the acknowledge signals from the plurality of slaves, wherein the at least one of the on control signal, the off control signal, and the dimming control signal transmitted by the master includes an identifier indicating whether the on control signal, the off control signal, or the dimming control signal is associated with the broadcast scheme or with the unicast scheme.