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Handheld Electronic Device Comprising A Keypad Having Multiple Character Sets Assigned Thereto, With The Character Sets Being Individually Illuminable

  • US 20090179859A1
  • Filed: 01/14/2008
  • Published: 07/16/2009
  • Est. Priority Date: 01/14/2008
  • Status: Abandoned Application
First Claim
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1. A handheld electronic device comprising:

  • a processor apparatus comprising a processor and a memory;

    an input apparatus structured to provide input to the processor apparatus and comprising a keypad apparatus;

    an output apparatus structured to receive output signals from the processor apparatus;

    the keypad apparatus comprising;

    a plurality of keys, at least some of the keys each comprising an illuminable first indicator which in an illuminated condition is indicative of a first character assigned to the key being active and an illuminable second indicator which in an illuminated condition is indicative of a second character assigned to the key being active;

    a first illumination source structured to illuminate at least some of the first indicators; and

    a second illumination source structured to illuminate at least some of the second indicators.

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