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Method and apparatus for implementing a graphical user interface keyboard and a text buffer on electronic devices

  • US 6,169,538 B1
  • Filed: 08/13/1998
  • Issued: 01/02/2001
  • Est. Priority Date: 08/13/1998
  • Status: Expired due to Term
First Claim
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1. A method for implementing a graphical user interface (GUI) keyboard and a text buffer on an electronic device comprising:

  • providing a plurality of keys on the GUI keyboard, wherein each key corresponds to a character;

    receiving a first pair of Cartesian coordinates that is representative of a current location of a pointer upon pointer-down;

    enhancing a first key on the GUI keyboard that corresponds to the first pair of Cartesian coordinates;

    inserting a first character in the text buffer that corresponds to the first key to identify an active character;

    subsequently receiving a second pair of Cartesian coordinates that is representative of the current location of the pointer prior to pointer-up;

    enhancing a second key instead of the first key that corresponds to the second pair of Cartesian coordinates;

    replacing the active character with a second character that corresponds to the second key, thus making the second character the active character; and

    accepting a character that is active upon pointer-up as a text character, wherein the first character that was active upon pointer-down is different from the character that is active upon pointer-up, the enhancing step comprising enlarging a key that is enhanced and further comprising enlarging a predetermined number of keys surrounding the key that is enhanced, wherein the predetermined number of keys is eight.

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