Keyboard sensor systems and methods

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11657789
APP PUB NO 20200320966A1
SERIAL NO

16904994

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Abstract

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A sensing system for a keyboard. Each key sensor comprises passive and active resonant circuits. The passive resonant circuit has a resonant frequency and the active resonant circuit excites the passive resonant circuit at the resonant frequency. A sensor driver drives the active resonant circuit with an RF drive signal, a multiplexing system multiplexes the drive signal such that simultaneously driven key sensors are separated by at least (k−1) keys, and a detector detects a level of RF signal from a driven key sensor for sensing a position and/or velocity of a key.

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Patent Owner(s)

Patent OwnerAddress
SONUUS LIMITEDST NEOTS CAMBRIDGESHIRE PE19 7AL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Clark, James Hastings St Neots, GB 10 77
McAuliffe, John Michael St Neots, GB 5 36

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