Koninklijke Philips Corporation N.v.

David S George

Cornelis Van Berkel

Asher J Hoskins

An electric field object sensing system uses a charge pumping circuit to provide a voltage over a capacitor that varies dependent upon the capacitive coupling between a transmitter electrode and a receiver electrode. The output of the charge pump is preferably fed to a high impedance read-out means, such as an analog-digital converter (ADC). The system is preferably implemented in CMOS and integrated in control circuits of electronic products.

Growing community of inventors

Horsted Keynes, United Kingdom

David S George