| 摘要 |
PURPOSE:To attain IC-implementation easily by performing processing completely digitally by a device which samples data with clock pulses without using any analog filter. CONSTITUTION:When a signal is supplied to a terminal A and the contents of a latch circuit 5 is <=6, ''1'' appears at a terminal P1 of a decision circuit 7 and the contents of a counting circuit 13 are counted up by one. Its contents are converted into an analog voltage and the output frequency of a voltage-controlled oscillator 15 increases. When the contents of the latch circuit 5 are >=23, ''1'' appears at an output terminal P2 of the decision circuit 7 and the output frequency of the voltage-controlled oscillator 15 decreases. When data is ''1'', a circuit makes a similar discrimination and the output frequency of the voltage- controlled oscillator 15 is converged on a normal value. Thus, clock pulses are obtained from the output of a flip-flop circuit 16 to sample the data. |
