Method of and apparatus for detecting key actuations

Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad

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Details

341 22, 379368, 345168, 400472, 455347, H03K 1794

Patent

active

059008296

ABSTRACT:
An electronic device (100) includes at least L keys (114) and a processor (506) having at least M inputs (600). Upon actuation, each one of the at least L keys (114) toggles a unique combination of N inputs of the at least M inputs (600), where each unique combination is taken from all possible combinations thereof. The at least M inputs (600) are read by the processor (506) and compared to a plurality of predetermined key patterns (806). Upon a match between the at least M inputs (600) and one of the plurality of predetermined key patterns (806), a key actuation is detected and a predetermined function may be processed in response thereto. The processor (506) may ignore simultaneous key actuations where combinations of inputs greater than N are toggled.

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