| 摘要 |
<p>PURPOSE: To reduce the erroneous receipt of a data even under an environment with much noise, and minimize a bad effect by treating the differential data of level of a fader as a modulated light data for communication. CONSTITUTION: The level voltage of a fader 10 is sampled 11, and converted 12 into an 8-bit illuminance data. A differential data forming part 14 generates a differential data between this illuminance data and the previous illuminance data on the basis of the illuminance data. A serial data receiving part 20 receives the differential data, converts it into a parallel data, and transmits the resulting data to an error detecting correcting part 22. The correcting part 22 transmits the differential data to an adding part 23 after a prescribed treatment, and the adding part 23 performs the addition of the differential data, and transmits a new modulated light data to a control part 21. The control part 21 successively supplies a load current to a stage luminaire 3 on the basis of the modulated light data.</p> |
