Dual-mode keypad for a mobile device

Details Dual-mode keypad for a mobile device Dual-mode keypad for a mobile device

2007-09-18

2007-09-18

Nguyen, Duc M. (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S575100

Reexamination Certificate

active

11031407

ABSTRACT:
In accordance with the teachings described herein, systems and methods are provided for implementing a dual-mode keypad for a mobile device. The keypad may operate in a telephony mode and a text-entry mode. The keypad may include a plurality of dual-mode keys that each include an associated telephony character and at least one associated text-entry character. The dual-mode keys may include one or more toggle keys, with each toggle key having a plurality of associated text-entry characters and one associated telephony character. The dual-mode keys may be partially covered by the keypad surface so that a plurality of key surfaces extend from the key and protrude through the keypad surface. In text-entry mode, the dual-mode keys are operable to input text-entry characters. In telephony mode, the dual-mode keys are operable to input telephony characters.

REFERENCES:
patent: 6286064 (2001-09-01), King et al.
patent: 6377685 (2002-04-01), Krishnan
patent: 6437682 (2002-08-01), Vance
patent: 6541715 (2003-04-01), Swanson
patent: 2003/0012368 (2003-01-01), Smallwood
patent: WO 02/101531 (2002-12-01), None
patent: WO 03/056784 (2003-07-01), None
patent: WO 03/090008 (2003-10-01), None
patent: WO 03/096160 (2003-11-01), None

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