| 摘要 |
PURPOSE:To ensure the simple hearing of the tape contents from outside without using a remote controller such as a signal transmitter, etc., by previously registering the key word of the user to an automatic answering telephone set and using this key word while the answering tape is advanced to carry out a remote operation. CONSTITUTION:The time interval between the 1st and 2nd key words of the user himself are previously registered to a storage device 15 through a Schmitt circuit 8, a one-shot multi 9, a D type FF10, etc. plus a switch 17 set conductive. Then a relay 7 is actuated when a prescribed incoming signal is applied to a trransformer 1. Thus an answering tape 19 is operated to supply the contents of the tape 19 to the transformer 1. Under such conditions, the user utters the key word from outside by telephone. This user's voice is amplified by an amplifier 2 and applied to the circuit 8. The output of the circuit 8 is detected by the multi 9 and the FF10, and a counter 13 counts the time interval of the key words. The result of the counting is compared with the contents registered to the device 15 through a comparator 16. Based on the result of comparison, the tape 19 is controlled. |
