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Four row overloaded QWERTY-like keypad layout

  • US 9,983,690 B2
  • Filed: 05/10/2016
  • Issued: 05/29/2018
  • Est. Priority Date: 12/26/2013
  • Status: Active Grant
First Claim
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1. A keypad layout for text input comprising:

  • a matrix of a plurality of keys, the matrix comprising a bottom row, a second row, a third row, and an upper row and N columns, wherein N is 5, 6, 7, or 8,wherein said plurality of keys comprises function keys, letter keys, and a space-key for actuating a space in text,wherein the function keys comprise;

    a backspace key for deleting text;

    a language switch key for switching between a first language and a second language;

    a numeric switch key for switching between a letter input level and a numeric and/or punctuation input level;

    an enter key; and

    a shift key for enabling of input of capital letters,wherein the space-key is positioned in a center key of the third row, and the number of center keys is two when N is an even number and the number of center keys is three when N is an odd number,and wherein each of the letter keys enable actuation of at least one of the twenty-six English alphabet letters.

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