US Patent Issued to NXP on Sept. 22 for "Capacitance sensing circuit" (South Korean Inventor)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,806, issued on Sept. 22, was assigned to NXP B.V. (Eindhoven, Netherlands).

"Capacitance sensing circuit" was invented by Geunwook Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A capacitance sensing circuit and method uses a current pulse to charge an external capacitor. A first voltage associated with the external capacitor is converted to current to charge an internal capacitor. A second voltage, which is associated with the internal capacitor that corresponds to the first voltage, is compared with an adjustable threshold voltage to generate a toggle signal. The adjustable threshold voltage is changed in response to the t...