Patent ID: 6134456
Filing Date: 2000-10-17
Classification: H04B,H04M,H04R

Abstract:
An integrated mobile-phone handsfree kit comprising, in combination:a mobile-phone;a vehicular stereo loudspeaker system including sound output loudspeakers; and a mobile-phone handsfree kit electric circuit assembly as an interface of both an audio signal stream and a vehicular electric power supply;the mobile-phone handsfree kit electric circuit assembly, as for the audio signal stream interface, being disposed between a sound output signal wire from the vehicular stereo loudspeaker system or from the mobile-phone and the sound output loudspeakers;the mobile-phone handsfree kit electric circuit assembly, as for the power supply interface, being disposed between an electric power supply wire of the vehicular stereo loudspeaker system and an electric power input wire from the vehicular electric power supply system, with the mobile-phone handsfree kit electric circuit assembly sharing the same vehicular electric power supply and the sound output loudspeakers of the vehicular stereo loudspeaker system;wherein the handsfree mobile-phone kit electric circuit assembly controls and switches the loudspeaker output between a sound source of the vehicular stereo loudspeaker system and a conversation audio source of the mobile-phone, depending on whether the mobile-phone is in communication or not; andwherein the mobile-phone handsfree kit electric circuit assembly does not need an additional electric power supply as conventionally from a cigarette lighter plug and does not need an additional external audio output loudspeaker.