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Hands-free device
| Details |
Inventors: Kindo, Tsuyoshi; Tomoda, Masaaki; Kurosaki, Toshihiko;
Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP)
Primary Examiner: Gesesse; Tilahun
Assistant Examiner:
Attorney, Agent or Firm: Wenderoth, Lind & Ponack, L.L.P.
A hands-free device includes a cellular phone of a driver, driver's speakers that output sounds to the driver, front speakers and rear speakers that output sounds widely in a car, a detection unit that outputs a detection signal to indicate whether there is a fellow passenger in the car or not, and control equipment that communicates with the cellular phone. In the case that the control equipment receives a telephone communication voice signal indicating telephone conversation voice of another party of the telephone conversation from the cellular phone, based on the detection signal outputted from the detection unit, when the control equipment judges that there is no fellow passenger, the control equipment has the telephone conversation voice outputted mainly from the front speakers and the rear speakers, and when the control equipment judges that there is a fellow passenger, the control equipment has the telephone conversation voice outputted mainly from the driver's speakers. |
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DETAILED DESCRIPTION In view of the foregoing, it is the object of this invention to provide a hands-free device that prevents a fellow passenger from hearing the telephone conversation voice of the other party of the telephone conversation when there is a fellow passenger, to realize the protection of privacy and the preservation of secrecy, and to make it easy for a driver to hear the telephone conversation voice with good sound quality when there is no fellow passenger.
To achieve the above-mentioned object, the hands-free device according to the present invention is a hands-free device for enabling a driver to have a hands-free telephone conversation using a cellular phone in a car comprising: a first speaker to output sound to the driver; a second speaker to output sound widely in the car; a detection unit operable to output a detection signal indicating whether there is a fellow passenger or not; and a control unit operable to communicate with the cellular phone, judge whether there is a fellow passenger or not based on the detection signal outputted from the detection unit, upon receiving a telephone conversation voice signal indicating the telephone conversation voice of the other party of the telephone conversation, have mainly the second speaker output the telephone conversation voice when the control unit judges that there is no fellow passenger, and have mainly the first speaker output the telephone conversation voice when the control unit judges that there is a fellow passenger.
By doing this, when there is a fellow passenger, since the telephone conversation voice is outputted mainly from the first speaker that outputs the sound to the driver, it is possible to prevent the fellow passenger from hearing the telephone conversation voice of the other party and to realize the protection of privacy and the preservation of secrecy.
Furthermore, when there is no fellow passenger, since the telephone conversation voice is outputted mainly from a second speaker that outputs sound widely in the car, the driver can hear the telephone conversation voice of the other party of the telephone conversation with good sound quality
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