A keyboard for a handheld electronic device comprises ten keys arranged in four rows in a DTMF keypad format. Three of the keys respectively bearing numerals 1, 2 and 3 arranged in a first row, three of the keys respectively bearing numerals 4, 5 and 6 arranged in a second row, three of the keys res
A keyboard for a handheld electronic device comprises ten keys arranged in four rows in a DTMF keypad format. Three of the keys respectively bearing numerals 1, 2 and 3 arranged in a first row, three of the keys respectively bearing numerals 4, 5 and 6 arranged in a second row, three of the keys respectively bearing numerals 7, 8 and 9 arranged in a third row, and a tenth key bearing a 0 located in a fourth row. The keys of the first second and third rows also bear letter characters which, either alone or in conjunction with additional letter character-bearing keys in the rows, are positioned relative to the letter characters on adjacent keys so as to form a QWERTY or Dvorak layout.
대표청구항▼
I claim: 1. A keyboard comprising: a plurality of keys, each of which is associated with indicia corresponding to at least one of alphabetic characters, numbers, and commands, wherein the plurality of keys are arranged in a grid having at least four rows and at least five columns, with the at least
I claim: 1. A keyboard comprising: a plurality of keys, each of which is associated with indicia corresponding to at least one of alphabetic characters, numbers, and commands, wherein the plurality of keys are arranged in a grid having at least four rows and at least five columns, with the at least four rows comprising in order a first, second, third and fourth row, and the at least five columns comprising in order a first, second, third, fourth, and fifth column; said alphabetic characters comprise letters A-Z, said numbers comprise numerals 0-9 and indicia corresponding to the numbers 0-9 is associated with the second, third, and fourth columns; keys of said plurality of keys associated with alphabetic characters number fewer than 26 and greater than nine and at least one alphabetic character shares one of said plurality of keys with another alphabetic character and at least one number, wherein keys associated with alphabetic characters have no more than two alphabetic characters per key; wherein at least some of the keys associated with command indicia have indicia chosen from a group comprising alt, spacebar, return, backspace, and shift; a keystroke interpreter in signal communication with keys associated with alphabetic characters, said keystroke interpreter using a predictive text routine during input of text; and wherein the numbers are arranged and displayed in a format of a phone keypad and the letters are simultaneously arranged and displayed in a keyboard layout whereby placement of phone calls and input of text is facilitated using said keyboard, wherein the phone keypad is associated with keys in the first, second, third, and fourth rows, with keys in the first row including a number "1" in the second column, a number "2" in the third column, and a number "3" in the fourth column, the phone keypad associated with keys in the second row including a number "4" in the second column, a number "5" in the third column, and a number "6" in the fourth column, the phone keypad associated with keys in the third row including a number "7" in the second column, a number "8" in the third column, and a number "9" in the fourth column, and the phone keypad associated with keys in the fourth row including a "*" in the second column, a number "0" in the third column, and a "#" in the fourth column. 2. The keyboard of claim 1, wherein the keyboard layout comprises one of QWERTY, QWERTZ, AZERTY, or DVORAK. 3. The keyboard of claim 1, wherein the number of keys associated with alphabetic characters is 14 and the total number of plurality of keys is 23. 4. The keyboard of claim 1, wherein the first row, first column comprising a key corresponding to the letters "QW". 5. The keyboard of claim 1, wherein the command indicia includes at least "backspace" and "return", each of which is associated with a separate key, with the key associated with "backspace" indicia being positioned above the key associated with "return" indicia. 6. The keyboard of claim 1, wherein the fourth row, first column comprising a key corresponding to the "alt" command. 7. The keyboard of claim 1, wherein the first column comprising a key corresponding to the letters "QW". 8. The keyboard of claim 1, wherein one of the plurality of keys is associated with both a "space" command indicia and the number "0" indicia. 9. The keyboard of claim 1, wherein one of the rows comprises keys corresponding in order to letters "QW", "ER", "TY", "UI", and "OP", one of the rows comprises keys corresponding in order to letters "AS", "DF", "GH", "JK", and "L" and one of the rows comprises keys corresponding in order to letters "ZX", "CV", "BN", and "M". 10. The keyboard of claim 1, wherein the fifth column comprises a key corresponding to indicia for a "return" command. 11. The keyboard of claim 1, wherein the rows are arcuate in shape. 12. The keyboard of claim 1, wherein one of the plurality of keys includes indicia for a "return/enter" command and the "return/enter" indicia is associated with a key in the fourth row. 13. The keyboard of claim 1, wherein the plurality of keys comprise a shape and the shape is one of uniform and non-uniform. 14. The keyboard of claim 1, wherein the plurality of keys are arranged in a grid that includes a sixth column. 15. The keyboard of claim 1, wherein the indicia comprises alphabetic indicia and numeric indicia, with the alphabetic indicia having a font size and the numeric indicia having a font size, and the font size of the alphabetic indicia is one of the same as or different from the font size of the numeric indicia. 16. A handheld mobile communication device comprising the keyboard as in claim 1. 17. A mobile communication device having a telephony mode and a text-entry mode comprising the keyboard as in claim 1. 18. The keyboard of claim 1, wherein the plurality of keys are provided by a liquid crystal display.
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