| 摘要 |
A stereo hands-free earphone-microphone phoneset assembly and control electronics for the simultaneous use of a mobile telephone and audio apparatus by the same phoneset. A manual version article requires the user to recognize the incoming call physically by means of vibration, flashing, or beeper sound and to flip the PHONE/AUDIO selection switch and TALK/END switch. A semi-automatic version provides alert sound tone to earphones to easily inform of incoming calls for manual change-over of two switches. An automatic version performs electronic automatic change-over between mobile telephone and audio apparatus by the use of an incoming call sensor signal as well as sending an alert tone to earphones. The call sensor can be either one of an RF, optical, sound sensor or direct connector signal. Additionally, the stereo hands-free phoneset is inserted to and the automatic version controller is embedded inside a mobile telephone terminal unit, which has PHONESET jack and an EXTERNAL AUDIO jack outside of its housing. This enables very comfortable use of both mobile communication and accompanying audio listening without any physical operation. |
