Keypad input interface for personal electronic devices

Details Keypad input interface for personal electronic devices Keypad input interface for personal electronic devices

G - Physics

06

K

G06K 11/06 (2006.01) G06F 3/02 (2006.01) G06F 3/023 (2006.01) H01H 13/70 (2006.01) H01H 13/84 (2006.01) H01H 25/04 (2006.01)

Patent

CA 2323846

An ergonomically efficient keypad arrangement involves elongated keys in a circular radial configuration. The keys are preferably elongated and wedge-shaped so as to accommodate the radial configuration and to allow a larger surface contact for keying. A useful shape of key is disclosed to allow clear separation between adjacent keys. A shift key arrangement allows the application of a larger number of characters on the keys, arranged in inner and outer pairs. The on-screen displays provides an initial oversized display of a selected character which is confirmed by more fully depressing the key.

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