Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-12-27
2005-12-27
Le, Danh Cong (Department: 2683)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S569100, C455S575900, C340S540000, C340S539100, C379S387010
Reexamination Certificate
active
06980837
ABSTRACT:
The present invention relates to an automatic mode converting method between an audio mode and a hands-free mode for a hands-free built-in car audio system of which a car audio function is organically combined with a hands-free function, in which the mode changing is carried out, depending on whether there is a voice signal output from a mobile phone. The automatic mode converting method, wherein the car audio system has a mode converting function conducting mode conversion between a hands-free mode for outputting a received voice signal from a mobile phone and an audio mode for outputting an audio sound source of the car audio system, includes the steps of: deciding whether a DTMF tone signal is input from the mobile phone; if the DTMF tone signal is input from the mobile phone, converting a current mode to the hands-free mode; and if a duration time of a greater level of the received voice signal from the mobile phone than a predetermined reference level lasts longer than a predetermined reference time, automatically converting the current mode to the audio mode.
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English Language Abstract of KR 2002-4153.
Greenblum & Bernstein P.L.C.
Hyundai Mobis Co., Ltd.
Le Danh Cong
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