| 摘要 |
PROBLEM TO BE SOLVED: To provide a keyboard suitable for a small handheld device. SOLUTION: A keyboard for a handheld device comprises ten keys arranged in four rows in a DTMF keypad format, among the ten keys, three of the keys respectively bearing numerals 1, 2 and 3 arranged in the first row, three of the keys respectively bearing numerals 4, 5 and 6 arranged in the second row, three of the keys respectively bearing numerals 7, 8 and 9 arranged in the third row and a tenth key bearing 0 located in the fourth row, with the keys of the first, second and third rows also bearing 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. COPYRIGHT: (C)2009,JPO&INPIT |
