| 摘要 |
PURPOSE:To enable to receive a pulse code signal of any system with a reception circuit with the same but simple constitution, by measuring the interval of sequential status change of an input pulse code signal sequentially and recognizing the synchronous pattern and data, based on the measuring value of interval. CONSTITUTION:A repetitive frequency of a clock pulse is set so that the 10- count of the clock pulse generated at a pulse interval measuring circuit 14 corresponds to one bit interval of an input pulse code signal, and if the synchronous pattern of the input pulse code is ''10000001'' as shown in A, sequential pulse interval measuring value at the status change pulse train as shown in E is 10,70,10,10,10,30,10,10,10,10,30,10. Thus, when the pulse interval trains are converted into a bit train corresponding to one-bit of 10-count, a code signal in coincidence with the signal waveform of the input pulse code signal as shown in A can be obtained. |
