Method and apparatus for proximity sensing in a portable electronic device

  • US 7,522,065 B2
  • Filed: 10/15/2004
  • Issued: 04/21/2009
  • Est. Priority Date: 10/15/2004
  • Status: Active Grant
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First Claim
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1. An electronic device comprising:

  • an audio user interface having a gain control input;

    a graphical user interface;

    a sensor having a sensor output indicating proximity of the sensor to a human body part; and

    a control circuit having an input connected to the sensor output and a control output connected to the gain control input of the audio user interface, the control circuit setting a signal level on the control output selectively in response to a signal level on the control circuit input;

    the control circuit further configured to perform the acts of;

    setting a mode of operation of the electronic device, wherein the act of setting the mode of operation comprises determining whether the device is in a close mode or a far mode; and

    exchanging information with a user through at least one user interface of the audio user interface and the graphical user interface, the at least one user interface selected based on the determined mode of use, wherein the act of exchanging information with the user comprises providing a plurality of menu choices to the user through the graphical user interface when the determined mode of use is the far mode and providing the plurality of menu choices to the user through the audio user interface when the determined mode of use is the close mode.

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