| 摘要 |
PURPOSE:To perform cross fade with ample rendering characteristic by changing over at least one of the fader outputs from a cross fader by a changeover device from one computing device to the other, and performing cross fade control between two illumination load groups. CONSTITUTION:When a cross fader 6 is operated to make cross fading, the level data Ca set by a fader CA rises from 0 to 100%, while the level data Cb of another fader CB sinks down to 0%. With computation by a guest seat dimming computing part 5b, the dimming level of a guest seat circuit W lowers in the direction of arrow l2, and on the contrary the dimming level Y2 of a scene circuit U rises from 0 level in the direction of arrow m0. If changeover circuits 7a-7c are restituted at the time t3 when the cross fade is finished as described, the guest seat circuit (w) is thereafter separated from the cross fader 6 and put under control by a guest seat dimming control part 5. |
