| 摘要 |
PURPOSE:To prevent a car telephone set from sending out a wrong dial number, by confirming the number which a user has dialed, by means of a sound response, in case of calling the other subscriber from in the car by use of said telephone set. CONSTITUTION:When a user has depressed one of the dial push-buttons 2, its signal is input to the control circuit 3, it is sent out as a dial signal, and is input to the sound file 4 consisting of a CCD or a semiconductor memory, etc. In this sound file 4, a sound corresponding to a numeral or a code of each button of the push-buttons are stored, for instance, by a PCM code, etc., the user sounds the number of a depressed push-button 2 from the speaker by means of a sound, and makes himself confirm the number which he has dialed. |
