| 摘要 |
PROBLEM TO BE SOLVED: To generate vibration and voice and to efficiently transduce driving current into vibration energy by driving an electroacoustic transducer as a vibrator by the output of a low-frequency oscillation circuit to be driven by a control circuit, driving the electroacoustic transducer as a buzzer by the output of a mid-frequency oscillation circuit when a call incoming signal is received by a radio part and generating conversation sound by a received voice processing circuit in the case of conversation. SOLUTION: When the call incoming signal is detected by a radio part, the vibration is generated by amplifying the output of the low-frequency oscillation circuit to be driven by a control circuit. The voice is generated by the mid-frequency oscillation circuit to be driven by the control circuit by switching of a changeover circuit. Furthermore, a conversation signal to be received by the radio part is generated as the conversation sound by switching the changeover circuit when the call is started by the received voice processing circuit. When the voice to notify incoming of the signal and the conversation sound of the other party are generated, it is realized by vibration of a vibrator of several hundreds of Hz to 3 kHz and when the incoming signal is notified by vibration, the vibrator is driven with several tens of Hz. |
