| 摘要 |
PURPOSE:To widen a directivity angle and to attain the transmission for a broad area by sending plural number of data signals and using a control signal to control a digital switch. CONSTITUTION:Four data signals are outputted consecutively from a port 15 by a microcomputer 15. An H control signal is outputted from a port 16 with respect to a 1st signal, a digital switch 7 is closed, a transistor(TR) 11 is turned on and a data signal is outputted from a light emitting element 1 as an optical signal. Similarly, 2nd, 3rd and 4th data signals are outputted respectively from light emitting elements 2, 3, 4. Consequently, the same data signal is sent in 4 directions with a delay. |
