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Mobile telephony station with speaker phone function

  • US 6,751,446 B1
  • Filed: 06/30/2000
  • Issued: 06/15/2004
  • Est. Priority Date: 06/30/1999
  • Status: Expired due to Term
First Claim
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1. A mobile telephony station with a speaker phone function, comprising:

  • a flip cover movably connected to a body;

    a sensor for sensing an open state and a closed state of the flip cover;

    a controller for placing the mobile telephony station in a speaker phone mode in response to the sensor sensing that the flip cover is in the open state;

    a CODEC for receiving and demodulating a digitized, compressed and modulated audio signal into an original signal and converting into an analog signal, and for compressing, modulating, and digitizing an analog audio signal to be transmitted into a state required for transmission;

    a duplex controller for, in the speaker phone mode, selectively receiving and forwarding only one of the received audio signal from the CODEC, and the audio signal to be transmitted to the CODEC;

    a microphone for directly inputting the audio signal intended to be transmitted into one of the duplex controller and the CODEC;

    a first speaker for reproducing an analog audio signal received from the CODEC when the mobile telephony unit is in a regular telephone mode; and

    a second speaker for reproducing an analog audio signal received through the duplex controller when the mobile telephony unit is in the speaker phone mode.

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