Handheld electronic device having virtual keypad input...

Details Handheld electronic device having virtual keypad input... Handheld electronic device having virtual keypad input...

2011-03-15

2011-03-15

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

Reexamination Certificate

active

07907129

ABSTRACT:
An improved handheld electronic device having a virtual keypad input device includes a case, and further includes an input apparatus and a processor apparatus disposed on the case. The input apparatus includes a number of vibrational sensors that sense the vibrational results of a contact with the case. The processor apparatus executes a routine that determines from the vibrational results a location on the case where the contact was made. Depending upon the location of the contact, the routine can interpret the contact as an input to the processor. The exemplary contact with the case can be in the nature of a touching or tapping contact or other contact with the case.

REFERENCES:
patent: 4029176 (1977-06-01), Mills
patent: 4938054 (1990-07-01), Dye et al.
patent: 2002/0135570 (2002-09-01), Iisaka et al.
patent: 2005/0083313 (2005-04-01), Hardie-Bick
patent: 2005/0174338 (2005-08-01), Ing et al.
patent: 2385125 (2003-08-01), None
patent: WO 03/067511 (2003-08-01), None

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