| 摘要 |
PCT No. PCT/EP95/00372 Sec. 371 Date Nov. 12, 1996 Sec. 102(e) Date Nov. 12, 1996 PCT Filed Feb. 2, 1995 PCT Pub. No. WO95/22211 PCT Pub. Date Aug. 17, 1995A radiation emitting device, such as an LED, is optimally driven in dependence on the value of a carrier frequency of a signal to be transmitted. The current provided to the radiation emitting element is controlled responsive to the carrier frequency. When using an LED, the current value is increased with decreasing duration of current flow. The apparatus is usable for remote controls suitable for controlling two or more devices. |
