ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,584, issued on March 18, was assigned to Nordic Semiconductor ASA (Trondheim, Norway).
"Amplitude regulator for crystal oscillator" was invented by Erlend Strandvik (Trondheim, Norway) and Hsin-Ta Wu (Trondheim, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic device comprises an oscillator circuit portion comprising an inverter and a crystal oscillator connected between the input and output terminals of the inverter. An amplitude regulator circuit portion is arranged to supply a current to the inverter. The amplitude regulator monitors a voltage at the input of the inverter and varies the current supplied to the inverter in resp...