Compact alphanumeric keyboard

Details Compact alphanumeric keyboard Compact alphanumeric keyboard

2007-09-04

2007-09-04

Chang, Kent (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

C708S145000, C345S022000

Reexamination Certificate

active

09561409

ABSTRACT:
An apparatus comprises an input keypad having a plurality of keys. The input keypad outputs an output signal that is indicative of either a single depressed key or a plurality of depressed keys. The apparatus includes a processor for receiving the output signal by the input keypad and associating an alphabetic character with the output signal.

REFERENCES:
patent: 4549279 (1985-10-01), Lapeyre
patent: 4825019 (1989-04-01), Fisher
patent: 4891777 (1990-01-01), Lapeyre
patent: 4994992 (1991-02-01), Lapeyre
patent: 5034574 (1991-07-01), Martovitz
patent: 5117455 (1992-05-01), Danish
patent: 5336002 (1994-08-01), Russo
patent: 5528235 (1996-06-01), Lin et al.
patent: 5612690 (1997-03-01), Levy
patent: 5793312 (1998-08-01), Tsubai
patent: 5861588 (1999-01-01), Gillot
patent: 5973621 (1999-10-01), Levy
patent: 5984549 (1999-11-01), Schaffer
patent: 5990872 (1999-11-01), Jorgenson et al.
patent: 6005498 (1999-12-01), Yang et al.
patent: 6212066 (2001-04-01), Fetterman
patent: 6262716 (2001-07-01), Raasch
patent: 6377685 (2002-04-01), Krishnan
patent: 8811954 (1988-11-01), None
patent: 197 16 788 (1998-10-01), None
patent: 0 540 147 (1993-05-01), None
patent: 2 746 524 (1997-09-01), None
patent: WO96 38776 (1996-12-01), None
PCT International Search Report for International Application No. PCT/US01/40446, Jun. 12, 2002.

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