| 摘要 |
PURPOSE:To attain the data entry of an electronic computer with a telephone set itself, by bringing the telephone set at the transmission side into a call state, converting a dial signal of the telephone set at the transmission side to an electronic computer data corresponding preset in advance, and inputting the data to the computer. CONSTITUTION:The dial signal of key telephone sets 1, 2 is an MF signal combining high and low group frequencies in sound band. A code data of the electronic computer 9 is latched in advance to the MF signal corresponding to each key and the MF signal is used as the input data of the electronic computer. In the call state of the telephone sets 1, 2, a push button generating the MF signal corresponding to the data desired to be inputted is depressed sequentially through selection among push buttons 11 of the telephone set 1 at the transmission side. The MF signal is picked up with an acoustic coupler 6 of the receiving side telephone set 2 and inputted to a demodulator 7. The MF signal demodulating signal is converted into the code data of the electronic computer corresponding at a code data converter 8 and applied to the electronic computer 9. |
