| 摘要 |
PURPOSE:To execute the processing of a signal without reducing the processing capacity of CPU, by detecting and discriminating the pulse width of a signal which is received while the trunk circuit is being held, and reading by scanning it from the central processing unit CPU. CONSTITUTION:The scanning information SCN which has been input is arranged in parallel in the series-parallel converting circuit 28 of the signal processing unit 26, the prescribed operation is executed by the arithmetic circuit 29, and it is written into the receiving memory 30. On the other hand, the accumulator 31 of the pulse signal processing unit 27 counts the SCN which has been arranged in parallel, at every prescribed time, and discriminates the continuous time of a signal variation. The discrimination result of the accumulator 31 is stored in the extended receiving memory 33 by each trunk circuit, and is prepared for reading by scanning from the central control unit 22. |
