| 摘要 |
PURPOSE:To delete the noise effect to ensure the assured receiving action by checking the reception state of the prescribed frequency of plural FF's. CONSTITUTION:In case the m-frequency (such as 2) among the n-frequency (such as 6) is received, m/n check circuit 41 and 42 which are connected vertically to FF31-36 connected with every frequency are provided. Then FF31-36 are released with a fixed period to deliver the pulse row, and the time is counted by timer 52 and via the pulse row. Thus, the normal reception signal is identified and delivered. |
