ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,504, issued on March 17, was assigned to Maxim Integrated Products Inc. (San Jose, Calif.).
"Current based resonant frequency tracking system" was invented by Vivek Prakash Nigam (Dublin, Calif.) and Sangwon Lee (Pleasanton, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A current based resonant frequency tracking system and methods can include: providing a haptic pattern with a processor, the haptic pattern including both a haptic pattern start time and a haptic pattern stop time; driving a linear resonant actuator according to the haptic pattern with an amplifier coupled to the processor, and the amplifier having an output coupled to the l...