| 摘要 |
PURPOSE:To secure the automatic selection switching for the input signal by securing the signal passing state for only the switch circuit which supplies the input signal supplied most slowly and by means of the memory circuit which stores the output binary signal of the binary coding circuit after conversion. CONSTITUTION:The plural number of signals are supplied to switch circuits 4, 5 and 6 from input terminals 1, 2 and 3 each, and the signals transmitted to terminals 2 and 3 are binary-coded through binary coding circuits 8 and 9 each. And then the control signal is delivered to secure the signal passing state for only the switch circuit which supplies the input signal supplied most slowly and by means of memory circuit 10 which memorizes the output binary signals of circuits 8 and 9 after conversion. Thus the input signal supplied most slowly is transmitted in preference in case plural number of input signals are supplied to plural number of input terminals. And the resetting is secured so that the input signal supplied to the corresponding input terminal may be transmitted at least in case no input signal arrives to other input terminals excepting one prescribed input terminal. |
