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Data input device and data input method

  • US 20060144211A1
  • Filed: 11/18/2005
  • Published: 07/06/2006
  • Est. Priority Date: 11/19/2004
  • Status: Abandoned Application
First Claim
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1. A data entry device comprising:

  • a key-top with at least a first symbol on its surface;

    a first switch, activated when a first part of the key-top is pressed;

    a second switch, activated when a second part of the key-top is pressed; and

    conversion means having inputs coupled to said first and second switches, said conversion means producing an output having states unique to respective combinations of activation states of said first and second switches including simultaneous activation.

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