Four column keypad

Details Four column keypad Four column keypad

2006-06-26

2010-11-09

Nguyen, Tuan D (Department: 2614)

Telephonic communications

Terminal

Housing or housing component

C379S433010

Reexamination Certificate

active

07831037

ABSTRACT:
A keypad arrangement and keypad arrangement of a handheld device implements a 12-key keypad to optimize space utilization on a handheld device. The display area on a user viewable side may occupy 25% or more of the available user side surface of the handheld device. The keypad is arranged as a three row by four column matrix. The number sign special function key may remain adjacent to the number 9 key of a standard keypad to facilitate effective changeover for the user when switching from a standard keypad.

REFERENCES:
patent: 2003/0227745 (2003-12-01), Khoo
patent: 2005/0007339 (2005-01-01), Sato
patent: 2005/0141179 (2005-06-01), Riddiford
patent: 2005/0235021 (2005-10-01), Chen et al.
patent: 1628188 (2006-02-01), None
patent: 2360738 (2001-10-01), None
patent: WO-98/33111 (1998-07-01), None

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