| 摘要 |
PURPOSE:To enable to apply the circuit of single discrimination circuit to different time casting detections and to ensure the time casting pattern recognition, by setting different time casting patterns. CONSTITUTION:With the circuit consisting of FF1, 2 and counter 5, the burst discrimination of time casting signal in frequency f1 or f2 is made. Further, when the burst discrimination for the signal f2 is made, the output of the counter 9 is counted 9 to stop the burst discrimination function with the count output and the count 5 of clock is continued. Further, if the input signal a is appeared as noise during the period when FF17 is set with the output of the counter 9, FF1 is reset and the discrimination of the time casting pattern is neglected. Further, when the forecast signal of the time casting pattern with a given period is detected, the pulse for time correction can be obtained from the counter 24. |
