| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lighting control system capable of controlling lighting apparatus connected to a plurality of systems of transmission medium, across other systems. <P>SOLUTION: Each of the four systems of signal lines 3a-3d connects lighting apparatus 2a, and optionally connects a sensor 2b for indicating lighting status and a switch 2c. The signal lines 3a-3d are connected to a relay MC which upon receiving a signal from any one of the signal lines 3a-3d, determines if the received signal is required to be transferred to other signal lines or not. <P>COPYRIGHT: (C)2004,JPO</p> |
