| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To realize control to keep the luminance detected by a luminance sensor constant, and control to instruct a light control level from a remote place in controlling light output of the illumination load. <P>SOLUTION: A transmission signal processing part 32 receives a transmission signal transmitted by a time-division multiplex transmission system in a signal line. A light control signal processing part 33 generates a light control signal to instruct the light output of the illumination load. In a control processing part 30, selection has become possible between a first control mode to generate the light control signal corresponding to the light control level given by the transmission signal from the light control processing part 32 when the transmission signal received through the transmission signal processing part 32 corresponding to an address for light control, and a second control mode to generate the light control signal corresponding to the luminance detected by the luminance sensor 31 from the light control signal processing part 32, so that the luminance detected by the luminance sensor 31 will retain a prescribed luminance established in a memory part 34. <P>COPYRIGHT: (C)2004,JPO</p> |
