Numeric keypad configuration

Details Numeric keypad configuration Numeric keypad configuration

1996-12-20

1999-07-20

Horabik, Michael

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

379368, 36470912, H03K 1794

Patent

active

059261196

ABSTRACT:
A numeric keypad configuration facilitates accurate keypresses by varying key heights to provide obvious tactile feedback to a user. A home key (160) in a keypad (100) has a lower height (265) than the other keys in the matrix. After locating the home key using touch, surrounding keys can be quickly and accurately located also without looking at the keypad. Additionally, instead of printing a number or letter on the surface of a small key, alphanumeric labels (120) are provided in the spacing area between the keys on the telephone front housing (180) and illuminated, thus improving visibility of the numbers and letters in dim lighting situations. This numeric keypad configuration can be used on cellular telephone keypads or any electronic device where a small numeric keypad is desirable.

REFERENCES:
patent: 4974183 (1990-11-01), Miller
patent: 5274217 (1993-12-01), Kilian
patent: 5583497 (1996-12-01), Hankes
patent: 5598469 (1997-01-01), Preker
patent: 5610602 (1997-03-01), Hargreaves

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