Apparatus and method for decoding a key press

Details Apparatus and method for decoding a key press Apparatus and method for decoding a key press

2008-06-17

2008-06-17

Wong, Albert K. (Department: 2612)

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

C345S168000

Reexamination Certificate

active

07388520

ABSTRACT:
Disclosed is an apparatus for decoding a key press. The apparatus includes an interface that performs conversion between parallel data and serial data and generates an interrupt when a key is pressed. The interface includes an output port, an input port, and a register. The apparatus also includes a key input unit, including a plurality of keys, that connects the output port to the input port, and a controller that determines which of the plurality of keys is pressed by receiving an interrupt signal from the interface via an interrupt pin, accessing the register via a plurality of address pins, and receiving serial data from the interface via a data pin.

REFERENCES:
patent: 5760714 (1998-06-01), Zimmerman
patent: 6509846 (2003-01-01), Fujiki
patent: 2002/0118178 (2002-08-01), O'Conghaile et al.
patent: 2004/0075649 (2004-04-01), Peng et al.
patent: 57-197637 (1982-12-01), None
patent: 2003 177859 (2003-06-01), None
patent: 2003-186607 (2003-07-01), None
patent: 0200489 (1997-08-01), None
patent: 10-2004 0010910 (2004-02-01), None
English language Abstract of Korean 10-2004-0010910.
English Language Abstract of JP 2003-18662607.
English Language Abstract of KR 0200489.
English Language Abstract of JP 57-197637.
English Language Abstract of JP 2003-177859.

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