| 摘要 |
PURPOSE:To change easily an intermitting pattern and to use the same power supply for different intermittent patterns by using a microprocessor and devising a highway switch circuit to generated the intermittent pattern. CONSTITUTION:Two transmission signals multiplexed by a transmission highway are stored in addresses 1,2 of a channel memory 1. A code 00 representing no sound is stored in advance in an address 3 of this channel memory 1. #2 and #1 are written respectively in addresses 1,2 of an address memory 2 by a control circuit 15. A signal is received in this state in the order of , channels A2, A1 and the transmission signal is outputted on the highway. In rewriting the content of the address 1 with #3 representing no sound, an output appears on the highway in the order of no sound and the channel A1, thereby changing the channel A2into no sound. In rewriting the address 1 of the address memory 2 again into #2, the state is restored so as to change easily the intermittent pattern. |
