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Method for inputting different characters by multi-directionally pressing a single key more than one time

  • US 20030223798A1
  • Filed: 05/28/2002
  • Published: 12/04/2003
  • Est. Priority Date: 04/24/2001
  • Status: Active Grant
First Claim
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1. A method for a method for inputting different characters by multi-directionally pressing one of a plurality of keys of a key pad of a portable electronic device more than one time, each key having a plurality of protuberances on an underside and a circuit board of the portable electronic device having a plurality of pads being equal in number to the protuberances and disposed correspondingly thereto, the method comprising:

  • determining the conduction periods of time by a control circuit of the portable electronic device, while one key being multi-directionally pressed a plurality of times to cause the protuberances to contact the corresponding pads at different conduction periods of time; and

    reading a corresponding character sequentially from a built-in character database by a storage device of the portable electronic device based on a longer one of the conduction periods of time.

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