| 摘要 |
PURPOSE:To ensure a remote control for the automatic answering telephone set without using any special device by securing the recording and reproducing of the marker signal with the timing featuring a specified relation with the recording timing of the answer message. CONSTITUTION:Key K110 is turned down, and the absence state is recorded on answer message tape 3 from mike 8 and through head 5. At the same time, marker signal key K211 is operated with the expected timing to supply the output of marker signal oscillator 9 to head 6. Thus the marker signal is recorded on the 2nd track of tape 3. When the telephone incoming is given during absence, the absence state recorded on tape 3 is given. Then the caller's voice is recorded on message tape 4 through head 7. In case the record contents of tape 4 is heard via the telephone circuit, the voice is sent out properly in the expected timing to be collated to the marker signal recorded through head 6 via code collation circuit 18. And only in case the coincidence is obtained in the expected timing, the relay A is actuated to transmit the message recorded on tape 4 via the telephone wire. |
